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https://hackaday.com/2011/01/28/touch-screen-jukebox/
|
Touch Screen Jukebox
|
Caleb Kraft
|
[
"computer hacks",
"digital audio hacks"
] |
[
"jukebox",
"mame"
] |
We went “live” with our forums less than 24 hours ago and we already have our first project ready for the front page. [Elementix] has shown us his
touch screen jukebox
build. Using an assortment of car audio speakers and amplifiers hooked up to an old Pentium 4 PC with 120 Gigs of storage, he put together the base cabinet. The touchscreen is an ebay find and he built a custom enclosure for that part. For the interface, he started with “Jukebox Arcade”, a jukebox front end for mame cabinets but found he could easily manipulate the layout since it used an xml file for the settings. After some trial and error, and a little work with
the gimp
, he got it looking the way he wanted. If you haven’t been there already, you should really check out our
new forums
.
| 5
| 5
|
[
{
"comment_id": "316840",
"author": "Sigg3",
"timestamp": "2011-01-28T15:31:36",
"content": "frist postr!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316841",
"author": "Sigg3",
"timestamp": "2011-01-28T15:34:55",
"content": "Oooh. I have an 8″ Lilliput LCD with touch, going to use it directly on my LinuxMCE server as a “media station”, everything builti inside an old secretary.But I have separated the w00fers from the rest of the setup. Won’t the old furniture distort the sound, or send out massive vibrations?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316846",
"author": "Elementix",
"timestamp": "2011-01-28T15:43:16",
"content": "I haven’t had any problems with it. Everything is solidly mounted, and the front doors are held in place by magnets.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316903",
"author": "Tumbleweed",
"timestamp": "2011-01-28T16:56:00",
"content": "Nice work!For those interested in doing a touch screen jukebox take a look at the version I put together:http://www.tumbleweedlabs.com/photos/?aID=5115287964543085169With a little bit of AutoCAD work and some spray adhesive you can jigsaw your way to having a living room Wurlitzer!Tumbleweed",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "330355",
"author": "Volkemon",
"timestamp": "2011-02-11T19:09:20",
"content": "@Elementix-THANKS!!! I followed your forum post sources, and have the setup running with your big button GUI.NICE WORK. I am off and running with cabinet ideas now..",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,293.818155
|
||
https://hackaday.com/2011/01/27/555-based-balancing-bot/
|
555 Based Balancing Bot
|
Caleb Kraft
|
[
"Robots Hacks"
] |
[
"555",
"balancing",
"segway"
] |
This post on Reddit by [superangryguy] caught our attention today. He’s put together a
video explaining the basics of how to build balancing robots
, focusing on a 555 timer based one. He’s got two main versions, the 555 based one and another that is based off of two transistors. He says the 555 based one is much easier to build. This has all come about due to the upcoming
555 timer contest
. if you go to the Reddit post you can get schematics for both versions as well as a sneak peak at what he plans on building for the contest. You can see the video after the break.
[youtube=http://www.youtube.com/watch?v=Y-afnY32RrY&w=470]
| 25
| 25
|
[
{
"comment_id": "316113",
"author": "SomeEvent",
"timestamp": "2011-01-28T00:10:25",
"content": "I think you may have just upset a lot of builders who struggle to do this with a $100+ worth of micro and sensors.Brilliant.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316125",
"author": "werza",
"timestamp": "2011-01-28T00:25:14",
"content": "Analog beauty.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316148",
"author": "Pii",
"timestamp": "2011-01-28T00:44:58",
"content": "You got that right!Nice stuff.. you guys have any idea on what else to build for the 555 timer contest?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316176",
"author": "Ryan",
"timestamp": "2011-01-28T01:19:05",
"content": "I will be baffled if people manage to complain about this project.Glorious.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316192",
"author": "mccoywm",
"timestamp": "2011-01-28T01:39:02",
"content": "@Ryan You’ll be baffled if people complain? Welcome to HaD :pBut yes I had to build one for my final project in EE, with micro, h-bridge, reflective sensor and I must say this is very impressive. We didn’t put in the derivative but it clearly would have helped. Again, very impressive.Video of ourshttp://www.youtube.com/watch?v=dRo9lZARQ0Q",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316212",
"author": "1337",
"timestamp": "2011-01-28T02:12:39",
"content": "speechless.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316261",
"author": "zool",
"timestamp": "2011-01-28T02:50:50",
"content": "cool",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316279",
"author": "Mike",
"timestamp": "2011-01-28T03:10:38",
"content": "Could you add another servo/wheel pair on the other side? Would that somehow change the circuit. I would like to build one with two servos.Also, why do you have 3-4 wires coming in on the tether? It looks like the circuit only shows the power source as missing. Could the battery pack be mounted with another servo/wheel pair to eliminate the tether?Very nice control – can’t believe you got that nice of a fluid response with photo resistors.Nice Job",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316338",
"author": "andrew",
"timestamp": "2011-01-28T04:30:07",
"content": "freakin awesome!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316481",
"author": "fluidic",
"timestamp": "2011-01-28T05:51:07",
"content": "IIRC a similar method is sometimes used for signal lock-in.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316557",
"author": "zeropointmodule",
"timestamp": "2011-01-28T07:47:51",
"content": "nice hack!BTW this might also work with a passive hall sensor as well, at least in theory.If you haven’t submitted it for the 555 contest, please do so :-) maybe under “Most obfuscated hack” ?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316581",
"author": "o",
"timestamp": "2011-01-28T08:16:31",
"content": "You could have done this with a 555 and two transis- Oh wait. Nevermind.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316595",
"author": "lamer",
"timestamp": "2011-01-28T08:36:22",
"content": "is there an arduino bootloader for thatNE555?hahahaha…..*cough*",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316705",
"author": "vin",
"timestamp": "2011-01-28T11:08:53",
"content": "analog power, you won’t need to write any code and not worry about the complexity of the algorithm for that matter.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316708",
"author": "vin",
"timestamp": "2011-01-28T11:10:57",
"content": "yeah the LDR are working much better than expected..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316757",
"author": "Necromant",
"timestamp": "2011-01-28T12:31:36",
"content": "I guess, only Chuck Norris managed to run arduino on ne555 =)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316763",
"author": "GordonEndersby",
"timestamp": "2011-01-28T12:40:39",
"content": "That is a great video and excellent explanation.One question.If you shine a light source on one side will it attempt to travel towards it?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316788",
"author": "Dino",
"timestamp": "2011-01-28T13:22:50",
"content": "LOVE the simplicity. Great application of the 555. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316800",
"author": "IACN Engineer",
"timestamp": "2011-01-28T13:44:39",
"content": "I love your description of derivative. Perhaps you need to decrease your gain if you want that higher derivative as well. The lower gain with the higher derivative would be able to stabilize.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316817",
"author": "Filespace",
"timestamp": "2011-01-28T14:46:32",
"content": "The only think i can think of is making a mini segway out of this thing. and strapping a little white mouse to it and its the next viral youtube video!…lmao thats just so funny..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316829",
"author": "cde",
"timestamp": "2011-01-28T15:15:28",
"content": "You’ve reduced the segway to a 10cent offtheshelf part.Lawsuits, engage!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316830",
"author": "elektrophreak",
"timestamp": "2011-01-28T15:16:07",
"content": "wow this is awesome! who needs microcontrollers anyway :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316887",
"author": "mic",
"timestamp": "2011-01-28T16:39:29",
"content": "555 = > chuck norris. Is there anything you can’t do with those?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "317194",
"author": "Alex",
"timestamp": "2011-01-28T21:49:36",
"content": "Yep, elegant. Very neat post.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "332005",
"author": "Bob Johnson",
"timestamp": "2011-02-13T11:40:22",
"content": "Could someone explain what the purpose of the 90 degree opposed light sensors is? Is that how you’re sensing the balance? By seeing how the light changes and trying to get it back to the original value? Wouldn’t that mean this hack wouldn’t really work for a robot that moved because the lights/shadows hitting the photoresistors would be constantly changing?",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,294.234532
|
||
https://hackaday.com/2011/01/27/2600-magazine-runs-a-sale-for-the-20th-century-back-issues/
|
2600 Magazine Runs A Sale For The 20th Century Back Issues
|
Caleb Kraft
|
[
"News"
] |
[
"2600",
"hope"
] |
In an effort to clear out some warehouse space,
2600 magazine has dropped the price for issues from 1984 to 2000
down to $2.50 each. If you haven’t read 2600, the Hacker Quarterly, shame on you. Pick some up and get reading. They are a resource beyond any other magazine out there for hacking and security related issues. They don’t gloss over the good bits either, they give detail because they know what they are talking about. Just to further prove that point, we present to you, the image above. Yes that is a schematic of a bluebox on a child and yes, you can buy it in
their store
(the shirt).
| 19
| 19
|
[
{
"comment_id": "316034",
"author": "Kuy",
"timestamp": "2011-01-27T22:52:51",
"content": "I didn’t realize it was necessary to pixelate baby faces, because they change so much before adulthood (or even later in childhood.)Or is it just a classic 2600-induced 8-bit retro face?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316084",
"author": "Bill D. Williams",
"timestamp": "2011-01-27T23:38:31",
"content": "They’re all a bunch of criminals. ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316105",
"author": "MS3FGX",
"timestamp": "2011-01-27T23:55:01",
"content": "The pixelate face is a joke, 2600 loves that kind of thing.I have been a 2600 reader/author for awhile now, and really do love the magazine. Admittedly some of the latest issues have had some articles of…debatable quality, but they have to take what they can get I suppose. People seem less and less inclined to actually write anymore, it is hard enough just getting them to read.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316128",
"author": "niksoft",
"timestamp": "2011-01-28T00:29:59",
"content": "Like i always said, hack sex too much and all kinds of crazy things can happen, and there’s the evidence; a camera baby with a pre-pixelated face… :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316174",
"author": "M4CGYV3R",
"timestamp": "2011-01-28T01:10:10",
"content": "I have most of them, but this will be a great and cheap opportunity to fill in the gaps.I hope they have a good supply of every one, I really want to get dupes of some of the better issues.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316185",
"author": "cpmike",
"timestamp": "2011-01-28T01:34:30",
"content": "I feel like I want to order the whole set because I’ve missed out on all of their printed stuff :P Four a year, couple hundred bucks?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316213",
"author": "mjrippe",
"timestamp": "2011-01-28T02:13:24",
"content": "It would be interesting to see just how many of the 1984-2000 articles are still pertinent. Probably quite a few of them!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316225",
"author": "2600fan",
"timestamp": "2011-01-28T02:33:56",
"content": "Most of these are available by PDF with some diligent Googling.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316269",
"author": "thetwiz",
"timestamp": "2011-01-28T03:01:38",
"content": "i remember my cisco instructor in high school kept a file full of these, and always got the new ones, but wouldn’t let us sign up for it ourselves because she through we might end up on an FBI watchlist at the age of 17 or something. when asked if she was on a watchlist, she replied no, because she subscribed using a deceased former coworker’s name.first issue i read, there was an article on how to get the admin password to a cisco router using only the user account to see the encrypted admin password, then plugging it into a decrypter that was readily available. we tested it on our lab equipment. it worked :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316505",
"author": "Patrick",
"timestamp": "2011-01-28T06:22:21",
"content": "I used to read this magazine all of the time, but unfortunately, I haven’t picked up an issue in a while. Before I go out and buy the latest one this weekend, does anyone have any recommendations for some back issues to pick up? Maybe four or five of your personal favorites?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316516",
"author": "supershwa",
"timestamp": "2011-01-28T06:36:50",
"content": "Ahhhh 2600. Memories.Pop Quiz: Who here can actually remember what the 2600 stands for? ;)The ol’ days of black/red/rainbow/etc. boxes…nostalgia!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316521",
"author": "Amos",
"timestamp": "2011-01-28T06:47:18",
"content": "@supershwa:http://en.wikipedia.org/wiki/2600_hertzAnd no, I’ve never built, owned, or used a “blue box” or any other “phreaking” apparatus… I just like learning about electronics, hacking, etc., hence my readership of this site ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316522",
"author": "Amos",
"timestamp": "2011-01-28T06:47:57",
"content": "PS, what do I win? ;P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316587",
"author": "sean",
"timestamp": "2011-01-28T08:24:23",
"content": "ah, 2600. It sure is momentous to see the only magazine I read religiously mentioned on the only web site I make an effort to visit daily.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316647",
"author": "doctorjones",
"timestamp": "2011-01-28T09:13:33",
"content": "Ah, I loved blue/red/orange boxing. My favorite was blotto ;P FortressFones were the best to take control of and call europe for free ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316961",
"author": "Neckbeard",
"timestamp": "2011-01-28T17:24:19",
"content": "2600 sometimes has has some good stuff in there I guess. I speak to one of the column authors regularly and know more than a few contributors myself. If you however pull your finger out and do a little google-fu you will find free zines that give much better and detailed information not just the latest teenager whingefest or canned exploit.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "317342",
"author": "Ecchin",
"timestamp": "2011-01-29T00:49:38",
"content": "@NeckbeardCare to share some links? I don’t know what to google for.I wish I lived in the US. The shipping costs are to high.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "318091",
"author": "Life2Death",
"timestamp": "2011-01-29T18:28:38",
"content": "I secound this, I read 2600 as some casual reading. I would love links to other ezines and a list of peoples favorite 2600 issues so i can pick up more reading material",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "319378",
"author": "Johanthan Engley",
"timestamp": "2011-01-31T06:04:32",
"content": "I just Hope that someone rips the whole collection and uploads it through torrent files like BTkunkie.org. Someone Please Do it!!!!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,293.778608
|
||
https://hackaday.com/2011/01/27/xbee-controlled-granite-wrapped-clock-travels-into-future/
|
Xbee Controlled, Granite-wrapped Clock Travels Into Future
|
Mike Szczys
|
[
"clock hacks"
] |
[
"7 segment",
"arduino",
"ds1307",
"rtc",
"saa1064"
] |
From the looks of it this clock is a couple of months ahead of its time. [Oscar]
built the clock
(
translated
) taking time to add a lot of goodies into the mix. First up, the parts you see include six large 7-segment displays for hours, minutes, and seconds as well as an LED marquee which can scroll messages. Inside there’s a temperature and humidity sensor for environmental feedback, and an Xbee module which allows for wireless computer control. Time is kept by a
DS1307 real-time clock
, which is read by an Arduino Uno, then pushed to the display by the pair of I2C addressable SAA1064 drivers. The whole thing was enclosed in four sheets of granite for the box, and a pane of glass for the front. We sure hope it’s well anchored to that wall. You can see it ticking away after the break.
[youtube=http://www.youtube.com/watch?v=lAV3yu9RDlM&w=470]
| 59
| 50
|
[
{
"comment_id": "315951",
"author": "Chris Williams",
"timestamp": "2011-01-27T21:34:38",
"content": "You know, not every country writes their dates MM/DD/YY…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315952",
"author": "macegr",
"timestamp": "2011-01-27T21:34:42",
"content": "Nice build. Also…in a lot of countries, they use DD-MM-YYYY.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315953",
"author": "raver1975",
"timestamp": "2011-01-27T21:34:54",
"content": "If you look at the untranslated project page, the posting date is:27/12/2010I think the date format they use in their locale is:DD/MM/YYYYIt’s a very nice build.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315954",
"author": "Aleks Clark",
"timestamp": "2011-01-27T21:35:00",
"content": "not everyone is silly enough to use middle-endian date formats you know…seriously, us-centric or what? whoever thought MIDDLE ENDIAN was a good way to write things? dd/mm/yyyy ftw",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315955",
"author": "Steve",
"timestamp": "2011-01-27T21:35:13",
"content": "No time traveling. Day/Month/Year, I would assume, as that’s the standard in most of the world.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315958",
"author": "Cold_Turkey",
"timestamp": "2011-01-27T21:37:02",
"content": "Or it could be saying 3rd Jan 2011 as we read it in the UK",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315975",
"author": "Zaphod",
"timestamp": "2011-01-27T21:49:35",
"content": "All of you people claiming that the clock is using DD-MM-YYYY formatted dates are out to lunch. That would imply that the US way isn’t the ONLY way to do things! That’s just SILLY!No, it’s much more likely that this clock builder has also incorporated temporal displacement technology into his clock.Seriously though, I’m guessing the Hackaday editors don’t get out of their home country very much…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315979",
"author": "Jefff",
"timestamp": "2011-01-27T21:50:48",
"content": "DD/MM/YYYY isn’t any better than the US way, it’s just consistently bad. YYYY/MM/DD, ftw.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315993",
"author": "Curt",
"timestamp": "2011-01-27T22:01:05",
"content": "YYYY-MM-DD is the ISO 8601 standard format, which is international. Regardless, that is a sweet clock!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315996",
"author": "Shadyman",
"timestamp": "2011-01-27T22:05:51",
"content": "D-MMM-YYYY ftw… 3-Jan-2011",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315999",
"author": "The Cageybee",
"timestamp": "2011-01-27T22:06:48",
"content": "Perhaps time should be formatted in the same way yanks format dates.I mean, MM:HH:SS is a much better way of doing things.‘At the third beep, the time will be 57:07:34 precisley’.You’ve got to admit, it’s got a nice ring to it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316005",
"author": "JC",
"timestamp": "2011-01-27T22:16:07",
"content": "Maybe we should do dates in binary format.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316008",
"author": "Marius",
"timestamp": "2011-01-27T22:20:39",
"content": "Face it, the US way of writing dates is just retarded.YYYY-MM-DD is the best since it can be sorted alpha-numerically and chronologically at the same time, but even DD-MM-YYYY makes some kinda sense working from least to most significant.But for heaven’s sake… why would anyone use MM-DD-YYYY!?I’ve only been in the US for about 5 years… and have yet to understand why this was ever decided on in the first place.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316011",
"author": "fahhem",
"timestamp": "2011-01-27T22:22:11",
"content": "Ahem. Epoch times are the only times. 1296163313.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316037",
"author": "Dan",
"timestamp": "2011-01-27T22:56:53",
"content": "Stardate ftw.Posted at -311926.2617643328 by Dan…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316072",
"author": "Jason",
"timestamp": "2011-01-27T23:27:11",
"content": "Pretty sure it was just a joke.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316131",
"author": "rbjacobs",
"timestamp": "2011-01-28T00:35:13",
"content": "Granite, breadboard and arduino make this a proper hack. Nice job!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316175",
"author": "Prawnhead",
"timestamp": "2011-01-28T01:10:28",
"content": "ISO FTW! GTFO US-dates! Posted on 2011-01-28 11:09 AM AEDST (Australian Eastern Daylight Savings Time)Now let’s see what time stamp this US-centric web site gives me.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316187",
"author": "Nick",
"timestamp": "2011-01-28T01:35:09",
"content": "We don’t say the 3rd of January in the United States, we say January 3rd, hence “MM.DD.YYYY (or YY). It’s a way of visualizing our speech patterns.And we have to be different. Obvi.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316299",
"author": "m1ndtr1p",
"timestamp": "2011-01-28T03:30:11",
"content": "Much like imperial and metric, the US is usually ass backwards… Hence why they use the mm/dd/yyyy format instead of dd/mm/yyyy or yyyy/mm/dd like everyone else does. So no, the clock is not ahead 2 months, its showing the CORRECT format for the date, IE: January 3rd 2011.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316324",
"author": "seanfalloy",
"timestamp": "2011-01-28T04:08:58",
"content": "Nice work on the clock. I would like to have that anywhere in my house except for the room im trying to fall asleep in. Way to bright for that.In canada dd/mm/yyyy is commonly accepted for date format and to me makes the most sense for the average ‘joe’ writing a date down (no unix time and the like)But the arguments on here got me thinking of why mm/dd/yyyy stared. and the only [somewhat] logical reason i can think of is that the month values will never be greater than 12 and the day values will never be greater than 31 and the year has no cap therefor if though of like that mm/dd/yyyy is ordered numerically from least to greatest.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316360",
"author": "dan fruzzetti",
"timestamp": "2011-01-28T05:03:54",
"content": "It says January 3rd. I thought it was like the 26th or 27th now.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316364",
"author": "Menthol",
"timestamp": "2011-01-28T05:09:49",
"content": "Speaking “January 3rd” is faster than “3rd of January,” and it’s confusing to record a date differently than how you construct it when spoken.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316482",
"author": "Stevie",
"timestamp": "2011-01-28T05:51:33",
"content": "The clock says 3rd Jan 2011. Simple.It’s just hat retarded americans swap the month and day around. The same way that they butcher some English words and swap words around in phrases so they can call it ‘American English’.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316507",
"author": "Haku",
"timestamp": "2011-01-28T06:22:59",
"content": "Ah yes, ‘American English’, or as I like to call it, ‘Bastardised English’It has bugged me in the past when I’ve bought digital wristwatches (mostly Casio) that display the date as MM-DD or MM-DD-YYYY. But I’ve stopped wearing a wristwatch since I’m not so shackled to specific times of the day anymore.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316520",
"author": "Laurence",
"timestamp": "2011-01-28T06:45:11",
"content": "awww poor americans :(stop being mean xDwhat did they do to us?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316537",
"author": "Gues7",
"timestamp": "2011-01-28T07:06:41",
"content": "OMG, Someone is wrong ON THE INTERNET! must fix must fix must fix…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316558",
"author": "SuRgE",
"timestamp": "2011-01-28T07:48:43",
"content": "“America’s greatest tragedy happened on 11/9” Doesn’t flow as well.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316575",
"author": "DudeBro",
"timestamp": "2011-01-28T08:07:02",
"content": "I think you’re really going a bit far with the insults here. Someone already explained that Americans SAY the date with the month first, organising it in writing the same way makes sense. I agree that it’s stupid and leads to much confusion, but it makes sense.Also, your “Bastardised English” would be the english everyone was speaking/writing before the British decided they liked how the French put the letter U in everything.One more thing! It’s daylight saving time. There is no ‘s’ on on saving.Thread complete. :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316580",
"author": "M4CGYV3R",
"timestamp": "2011-01-28T08:13:35",
"content": "@Stevie: Yep, that’s right. It’s obviously us Americans and our hats.MM-DD-YYYY is the correct way to write it because when you read the long form of the date you say “January Twenty-Seventh, Twenty-Eleven” not “Twenty-Seventh January, Twenty-Eleven”. That is, unless you’re a retarded sailor from the 40s…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316641",
"author": "salec",
"timestamp": "2011-01-28T09:02:31",
"content": "For easiest comparing and sorting of timemarks, YYYYMMDDhhmmss, 14 decimal figures, which is 41 bits, or 6 bytes if you can’t be bothered to pack it nicesly. However, mm and ss can both be stored in 6 bits, hh and DD in 5, MM in 4 and YYYY … well, it depends how long in the future we wish to use the same format.So far, we have: 6+6+5+5+4 = 26 bits for timestamps without years. There is remaining space of 6 bits in last byte, but it wont give us wiggle space for even one whole century, so we need to add at least one more byte to the total of five, which gives us 16384 total years before we need to switch formats.Incidentally, 16384 > 9999 > 8192, so it is also minimum number of bits to completely cover a four-decimal-digits years’ field.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316677",
"author": "Fuzzcraft",
"timestamp": "2011-01-28T10:02:10",
"content": "@M4CGYV3R: has it occured to you that a large part of the world actually pronounce the long form as “three January two thousand eleven?” (well, obviously not in English of course). Now why would we Europeans write the short form as DD-MM-YYYY?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316692",
"author": "Brandano",
"timestamp": "2011-01-28T10:28:17",
"content": "Cageybee: perhaps you meant MM:SS:HH?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316696",
"author": "error404",
"timestamp": "2011-01-28T10:37:17",
"content": "dd-mm-yyyy or yyyy-mm-dd are the only sensible formats.Given the confusion that results when encountering a date of the format nn-nn-nnnn, the only practical choice is yyyy-mm-dd.In Canada both dd-mm and mm-dd are used with some regularity so you never know what the fuck is going on. It’s really irritating.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316703",
"author": "Alan",
"timestamp": "2011-01-28T11:07:24",
"content": "I write my dates YYDM-DY-YM.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316710",
"author": "loonquawl",
"timestamp": "2011-01-28T11:13:37",
"content": "$0.01 for the first thought on backwards notation pervading human transcript systems….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316712",
"author": "echodelta",
"timestamp": "2011-01-28T11:15:42",
"content": "Along with 12hour time we Americans have it screwed up. No wonder we are behind in math. From well before kindergarten we are accustomed to counting without zero, and numbers out of sequence. It’s still the middle ages. 201128011016GMT",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316715",
"author": "Jim",
"timestamp": "2011-01-28T11:19:56",
"content": "Day rolls into month then rolls into year. Simple. Day-Month-Year and Year-Month-Day are just the date equivalents of ‘little endian’ and ‘big endian’ data storage. However Month-Day-Year has no obvious rational to me, it seems analogous to swapping the time about to show as Hour:Seconds:Minute! When dealing with people in the USA, I now consciously write the date with the month as a word (i.e. ‘September’) to avoid just such confusion.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316720",
"author": "echodelta",
"timestamp": "2011-01-28T11:22:49",
"content": "See I goofed, 201101281023GMT now",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316752",
"author": "SelfSilent",
"timestamp": "2011-01-28T12:20:47",
"content": "When someone asks you the date, surely you should start with the information that they are probably looking for first, the day.Unless they have been in a coma I’d guess they know what month it was and apart from time travellers I’d imagine everyone knows what year it is.The Yank method makes no sense written down.The English language is made up of old English and bits of other European languages. American is made up of the modern day English language.Problem is, the initial settlers that we sent wouldn’t have been the clever ones. Imagine if we had sent all the intelligent English over and they had died in a ship wreck!So it seemed natural to send over the “short on brains”. Even when they made it there, none of the Intelligent English wanted to go and live in a 3rd world country as it was back then.So, for a long long time, the “short on brains” settlers that we sent, who clearly had poor schooling, got many spellings, ideas and standards incorrect. Due to the fact that there was no one there to correct it, it got out of control and what we see today is the result.A country stuck using old methods that were incorrect from the beginning. Being such a new country they haven’t yet learned to joke about themselves as they see themselves at the top of the ladder and they have to show aggression to stay up there.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316777",
"author": "ProfP",
"timestamp": "2011-01-28T13:01:34",
"content": "The US date thing can work in Europes favour – thanks to the ambiguity of mm-dd versus dd-mm, I was able to ‘legally’ drink several months prior to my 21st birthday in the US…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316804",
"author": "Bob",
"timestamp": "2011-01-28T13:53:42",
"content": "@DudeBro It is not daylight saving time, it is British Summer Time :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316810",
"author": "Stevie",
"timestamp": "2011-01-28T14:26:43",
"content": "Most sane people would say ‘3rd of January’. But of course the Americans being so big headed and retarded as they are, have to change it to be read ‘January the 3rd’.Would they give directions backwards also? ‘Yeah mate no problem, you turn right after you’ve turned left and then go straight’.Fecking ‘canos",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316815",
"author": "exo",
"timestamp": "2011-01-28T14:34:18",
"content": "Oh you gringos think you are the only ones in the world!Lot’s of places use dd/mm/yy",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316823",
"author": "Raus",
"timestamp": "2011-01-28T15:01:20",
"content": "Take into account that, in Spain, usual date format is DD/MM/YYYY rather than MM/DD/YYYY, so it’s not really in the future but some weeks ago ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316836",
"author": "alan",
"timestamp": "2011-01-28T15:25:46",
"content": "@stevie no one i know here in america says “the” when saying the time. you added “the” just to make your point go in your favor.whats wrong with saying “january 3rd”? your way we have to say 3rd OF january.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "317062",
"author": "0x4368726973",
"timestamp": "2011-01-28T18:58:34",
"content": "My co-workers are always confused with my dates. I called the log sheet from yesterday 20110127. Makes it much easier to find it than if I wrote it any other way.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "317123",
"author": "MrLard",
"timestamp": "2011-01-28T20:28:06",
"content": "Nice clock, I prefer GCC to Arduino, gonna have to write some scripts to convert shared (stolen) Arduino code to GCC though.Off-Topic@profp When you get on a ferry in England, you can legally drink beer ‘n’ wines at 16. Strange the US let you drive at 15 in most states, cars=good, booze=bad. I like Japanese (big-endian) dates, I’m a shell guy.@0x4368726973 (Chris ;-) ) I commend your lack of Obfuscation my dear boy, keep filenames short.On this day, Friday the twenty-eighth day of January, in the year of our Lord Two-thousand and eleven.orbash$ dateFri Jan 28 19:24:46 GMT 2011orbash$ date -R (date and time in RFC 2822 format.)Fri, 28 Jan 2011 19:26:24 +0000(do notice the +0000, internet time is set to GMT :-P )",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "317141",
"author": "Aleks Clark",
"timestamp": "2011-01-28T20:52:22",
"content": "the telling part is that he assumed that the guy who just fabbed an amazing clock wasn’t smart enough to set it correctly, instead of thinking “maybe he’s not AMERICAN”…you would have thought the fact that he had to use google translate was a clue, but hey, welcome to today’s HaD….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "317170",
"author": "third",
"timestamp": "2011-01-28T21:18:45",
"content": "Of course you write dates the way you say them. You say “January 3rd 2011” so that becomes 01/03/2011. Similarly, 10:03AN means “ten past three in the afternoon”. Weird clock, suddenly jumping towards the future one hour.Damn it HaD, this is bad, even for you.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,294.17498
|
||
https://hackaday.com/2011/01/27/58-ball-bearing-playground/
|
5/8″ Ball Bearing Playground
|
Mike Szczys
|
[
"Toy Hacks"
] |
[
"ball bearing",
"gear",
"kinetic sculpture",
"marble",
"wood"
] |
This kinetic sculpture
is a ball bearing’s paradise. Not only do they get a cushy ride around two lift wheels but there’s a variety of enjoyable obstacles they can go down. The first is a vortex made from a wooden flower pot which sends the balls randomly down one of two possible exits. From there it’s on to enjoy a ride on a flip-flop, a divide-by-three (takes weight of three marbles before it dumps them all), a zig-zag track, or a divide by twelve mechanism. We’re sure this is a riveting read, but don’t miss the video after the break where [Ronald Walter] shows it in action and takes it apart to illustrate the various features.
If you’re wondering about the digital logic terms used, we’ve seen
wooden devices that use these concepts
in the past.
[youtube=http://www.youtube.com/watch?v=QzIG9stFXSI&w=470]
[via
Reddit
]
| 12
| 12
|
[
{
"comment_id": "315924",
"author": "Tom",
"timestamp": "2011-01-27T20:58:51",
"content": "Lol It’s not actually a flower pot, it just looks like one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315925",
"author": "Setatx",
"timestamp": "2011-01-27T21:01:06",
"content": "“The first is a vortex made from a wooden flower pot which sends the balls randomly down one of two possible exits.”Love these! Like playing mousetrap as a kid.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315931",
"author": "JC",
"timestamp": "2011-01-27T21:08:29",
"content": "Ha that’s a cool design.I wonder if they are FAG bearings.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315973",
"author": "Mike of England",
"timestamp": "2011-01-27T21:48:13",
"content": "EPIC?:)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316018",
"author": "zool",
"timestamp": "2011-01-27T22:36:34",
"content": "cool, nice quality",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316041",
"author": "Caspan",
"timestamp": "2011-01-27T23:03:08",
"content": "@JC LOL you know my brother worked for FAG bearings and had this name tag that had to be visible at all times. So there was a nice close up picture of his face with a huge red FAG right above it… I loved it :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316071",
"author": "Erik Johnson",
"timestamp": "2011-01-27T23:26:54",
"content": "I loved this stuff as a kid. I was all over the neighbor kid’s Super Marble Run.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316165",
"author": "willy",
"timestamp": "2011-01-28T01:03:24",
"content": "he has two other designs that are just as cool…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316166",
"author": "vonskippy",
"timestamp": "2011-01-28T01:04:10",
"content": "I was going to make something like that, then I got a goldfish in a bowl. Pretty much the same entertainment value.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316215",
"author": "JC",
"timestamp": "2011-01-28T02:14:40",
"content": "@Caspan – I hoped somebody would get that! I actually used to work for Timken, so that was always pretty funny to me. I’m sure it means something way different in Germany (I think that’s the right country).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316844",
"author": "Sigg3",
"timestamp": "2011-01-28T15:41:47",
"content": "My GF’s all like: How do you turn it off?:)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "317169",
"author": "Hirudinea",
"timestamp": "2011-01-28T21:16:20",
"content": "Sure it does nothing, but it does it very well.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,293.978989
|
||
https://hackaday.com/2011/01/27/mitch-altman-hosts-a-tour-of-noisebridge/
|
Mitch Altman Hosts A Tour Of Noisebridge
|
Mike Szczys
|
[
"Hackerspaces"
] |
[
"chaos communications camp",
"Mitch Altman",
"noisebridge"
] |
[Mitch Altman] just popped up once again (seriously, this guy is everywhere!) in
a video tour of Noisebridge
, and hackerspace he co-founded in San Fransisco. The space is 5200 square feet and they’ve managed to cram a lot of different uses into it. There’s areas for computers and electronics, crafting and sewing, a dark room , a machine shop, a full kitchen, as well as classrooms and other gathering places.
He talks about what a hackerspace is and what goes on in San Fran before going off on a little tour of the hackerspace movement. His recollection pins the Chaos Communications Camp as the impetus behind an initial push for these community spaces popping up in the US. It’s a fun five-minutes to watch so check it out.
[via
Boing Boing
]
| 17
| 17
|
[
{
"comment_id": "315894",
"author": "macona",
"timestamp": "2011-01-27T19:47:54",
"content": "I still want to know how these places get their money to stay open. Donations are nice but I would hate to be the one one the lease wondering who is going to make the payments for utilities and the building.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315900",
"author": "macona",
"timestamp": "2011-01-27T19:52:56",
"content": "Ahh, $80 a month membership.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315905",
"author": "alan",
"timestamp": "2011-01-27T20:06:01",
"content": "@maconaeven if it was $80 a month – the amount of resources you would get would be amazing. All of the workshops that you could attend, the equipment, the smell of BO. you name it, you get it!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315910",
"author": "Bergo",
"timestamp": "2011-01-27T20:20:36",
"content": "Currenlty involved in setting up a hackerspace in the region I live. It’s tough, but we’re a university town, so a lot of EE and CompSci students/alumni are quite interested. Building lease expenses and being reliant on membership dues as the only source of income is something we haven’t completely worked out yet. Would be interesting to find out a bit more on where some of the larger hack spaces started (basements? loaned space?) and what the critical mass was for a dedicated space to be feasible.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315930",
"author": "Paul",
"timestamp": "2011-01-27T21:08:19",
"content": "Well Noisebridge are paying for relatively prime real estate – we’re opening a space over the next few weeks, we’re looking at ~$600 a month in overheads and looking for 30 people kicking in $20 each to be self sustaining (plus all donated tools etc)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315949",
"author": "IsotopeJ",
"timestamp": "2011-01-27T21:32:09",
"content": "The key is classes, especially when starting up. If you can offer TIG and MIG welding classes in a metropolitan area, you’re golden.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315957",
"author": "macona",
"timestamp": "2011-01-27T21:35:56",
"content": "@alanDont forget the caffeinated beverages…Their “full machine shop” is amusing.You would be surprised how many people would balk at $80. I was involved in the Portland Techshop and even when we had a sale on membership people complained.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315986",
"author": "Matt",
"timestamp": "2011-01-27T21:57:50",
"content": "There will always be nay sayers, and differences of opinions. Different people get involved in groups for different reasons, and at the end of the day every hackerspace turns out different. Sometimes bizarrely different.But at the core of it is community. People getting together, sharing ideas, and propping each other up as they seek to bring something better into the world.That’s something I think STEM folks in general need to keep pushing themselves in accomplishing. The battle to undo american idol is not going well.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316038",
"author": "macona",
"timestamp": "2011-01-27T22:58:59",
"content": "@IsotopeJYou would be surprised, initially the classes for mig and tig were full then after 6 months or so we couldn’t find enough people to even hold the class.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316067",
"author": "Bergo",
"timestamp": "2011-01-27T23:24:55",
"content": "I wish I was somewhere with cheap real estate, hard for a non-profit organization to try to cough up roughly $12-15/sqft, looking at around a minimum $3000 OPEX.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316106",
"author": "zool",
"timestamp": "2011-01-27T23:55:04",
"content": "be excellent to each other",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316121",
"author": "Erik Johnson",
"timestamp": "2011-01-28T00:23:15",
"content": "I wonder if they filmed Mitch from the non-hair-dye angle on purpose lol",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316147",
"author": "osgeld",
"timestamp": "2011-01-28T00:44:31",
"content": "there is one sorta in my area that charges 80$ memberships too, and that didnt sound all that unreasonable to me, but its over an hour away so the time that I would participate would not fit all that well for me",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316257",
"author": "Jake",
"timestamp": "2011-01-28T02:47:47",
"content": "Haha wow, that picture contains the worst breadboard prototyping job I have ever seen!!! I can’t even imagine trying to debug that! LOL!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316478",
"author": "sam",
"timestamp": "2011-01-28T05:46:19",
"content": "Altman be praised!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "321089",
"author": "addidis",
"timestamp": "2011-02-02T11:57:39",
"content": "If only it didnt cost me what little money i can spend on making stuff to get a membership at one of these places.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "428453",
"author": "Slim.Bridgewire",
"timestamp": "2011-08-04T11:51:13",
"content": "as some one who just launched a maker/hackerspace here in nevada I can say these guys were a huge influence on us when we started about a year ago. now we got a 5400 sq ft space and things are forming up.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,293.930022
|
||
https://hackaday.com/2011/01/27/conways-wall-of-life-and-whiteboard-emporium/
|
Conways’ Wall Of Life And Whiteboard Emporium
|
Mike Szczys
|
[
"LED Hacks"
] |
[
"conways game of life",
"led marquee",
"max6979",
"parallax",
"sw28",
"whiteboard"
] |
White board beats chalk board, LED marquee beats white board, and an LED white board trumps them all.
This hybrid
lets you draw on the surface with dry erase markers while Conway’s game of life plays out underneath. [Bert] sent us this tip after seeing
yesterday’s office marquee
. This version is quite similar in appearance but the guts are very different. Inside you’ll find a Parallax SX28 microcontroller doing the heavy lifting. The display is multiplexed but they didn’t go with a common 595 shift register, but a beefier
MAX6979 LED driver
. We’re not too familiar with this part but it does have a lot of nice features like constant current, and automatic shutdown if serial data stalls for more than 1 second. This is a low-side driver so transistors are used to connect voltage to the rows; the opposite from the setup we looked at yesterday. This was built several years ago and is still working happily even though its permanent home is a breadboard. Source code can be found
on this page
.
| 6
| 6
|
[
{
"comment_id": "315898",
"author": "Charon",
"timestamp": "2011-01-27T19:49:24",
"content": "This board is up atUATif anyone is interested. The parallax is also open (underneath the dry erase markers in the picture).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315907",
"author": "alan",
"timestamp": "2011-01-27T20:08:52",
"content": "@Charonas of 2pm eastern, the webcams on that website show 2 uber nerds play magic or whatever card game it is… lol.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315918",
"author": "Durgledoggy",
"timestamp": "2011-01-27T20:42:35",
"content": "Blackboard is superior to whiteboard any day of the year!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316159",
"author": "Evaryont",
"timestamp": "2011-01-28T00:59:51",
"content": "@alanYeah… UAT is full of nerds, and like max 10 girls. None of us get any, so we all go for the next best thing, Magic…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316285",
"author": "Sean Hillmeyer",
"timestamp": "2011-01-28T03:17:21",
"content": "It’s always fun to get a surprise mention on Hackaday! Thanks Bert. Since it looks like you can remember more of the circuit than I have over the last few years, you should draw up the schematic for us.BTW, hand soldered LEDs, solid wire and hot glue made it all come together… not so much fun but I’d do it again in a heartbeat.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316366",
"author": "Bert JW Regeer",
"timestamp": "2011-01-28T05:12:25",
"content": "@Sean:I don’t think I remember much more than you. That write-up has been up on my site for a while now, just never thought of submitting it!Indeed, it was a long project, cutting wires, soldering, hot glueing and getting the connectors soldered right as well as the code, hats off to you still for that piece of magic!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,293.72092
|
||
https://hackaday.com/2011/01/27/exploding-an-avr/
|
Exploding An AVR
|
Chris Nelson
|
[
"Microcontrollers"
] |
[
"ATmega88",
"magic smoke",
"silicon"
] |
Unfortunately [manekinen] wrecked a couple of AVRs during his tinkering. Not letting this get him down he decided to blow them up to see what would happen. In exchange for their precious magic smoke the AVRs revealed a good portion of their
silicon die
.
While the details are a little sparse it seems like he hooked them up to a high (and possibly reverse) source to blow open the chips casing. From the pictures it looks like he was able to reveal some of the flash or SRAM (the big multi colored rectangles) and what could possibly be the power supply. Be sure to checkout the videos after the break for some silicon carnage.
[youtube=
]
[youtube=
http://www.youtube.com/watch?v=4YEL7Jx26Wk&feature=related
&w=470]
| 23
| 23
|
[
{
"comment_id": "315834",
"author": "SquantMuts",
"timestamp": "2011-01-27T17:36:14",
"content": "Rest in pieces…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315844",
"author": "Grovenstien",
"timestamp": "2011-01-27T17:56:16",
"content": "Interesting, I had a similar experience when incorrectly wiring a stepper motor to an ULN2803A OCTAL DARLINGTON! Fry!!!!The chip casing properly flys, i would love to see this in superslow mo.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315850",
"author": "James",
"timestamp": "2011-01-27T18:07:46",
"content": "Had this happen to me once (though i cannot remember what i was tinkering with at the time)Heard a loud snap and a small black bit landed near me, took me a minute to work out where it took off from!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315852",
"author": "Chris",
"timestamp": "2011-01-27T18:12:24",
"content": "very nice explosions, actually. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315858",
"author": "strider_mt2k",
"timestamp": "2011-01-27T18:27:28",
"content": "Could be the solder bridges…You should see big industrial gear that this happens to.Think large smouldering holes in PCBs and dented sheet metal.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315868",
"author": "nes",
"timestamp": "2011-01-27T18:41:41",
"content": "Try putting a windowed EPROM into the programmer the wrong way round. You get a nice light show of tiny blue flashes but sadly a non-functional chip afterwards.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315870",
"author": "Peter",
"timestamp": "2011-01-27T18:41:51",
"content": "Back in the 90’s I had an internship at a semiconductor company, AMD, where I worked in a device debug group.One technique for troubleshooting bad packaged die was to “decap” them by eating the plastic case away with a couple drops of nitric acid on top of the device. (Under a vent hood. Wearing gloves and goggles.)The die would be exposed with the lead wires still attached. After having the acid washed off and being dried, the device would be put on a test rig inside a dark box with a thermal camera focused on the exposed die. When power was applied to the device, sometimes hot spots would show up at flaws.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315887",
"author": "qwerty",
"timestamp": "2011-01-27T19:31:37",
"content": "A guy I knew in a mil lab over 20 years ago ragularly blew up defective Z80’s by connecting each mains (240V here) rail to each Z80 pin line.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315891",
"author": "anon",
"timestamp": "2011-01-27T19:45:37",
"content": "Nothing ever works the same after you let the blue smoke out. Wish I could get that stuff in some sort of recharging can.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315920",
"author": "AlanKilian",
"timestamp": "2011-01-27T20:49:13",
"content": "I wonder what that second explotion was from in the Mega32 (first) video.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315927",
"author": "NishaKitty",
"timestamp": "2011-01-27T21:01:36",
"content": "Seeing bits of hardware blown up kinda makes me shiver >.<",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315935",
"author": "Fabian",
"timestamp": "2011-01-27T21:16:13",
"content": "Please! send me the code to do that!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315978",
"author": "chic",
"timestamp": "2011-01-27T21:50:39",
"content": "Didn’t know that the AVRs had the HCF instruction so dearly beloved of the 6809…http://en.wikipedia.org/wiki/Halt_and_Catch_Fire",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316076",
"author": "aztraph",
"timestamp": "2011-01-27T23:32:54",
"content": "now what did those little bits ever do to deserve that!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316116",
"author": "MoJo",
"timestamp": "2011-01-28T00:15:42",
"content": "It isn’t entirely clear but many of these could probably have been fixed. Bad fuse settings can be undone. Even when part of the ic is dead the rest usually still works.Avrs seem to be very resiliant. I have nuked a couple with backwards supply lines etc. They smoked but still work",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316214",
"author": "George Johnson",
"timestamp": "2011-01-28T02:13:51",
"content": "I hope he learns to solder a little better too.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316235",
"author": "seanfalloy",
"timestamp": "2011-01-28T02:41:56",
"content": "electronics run on smoke. the electricity is only there to hold it in. Once you let it out it doesnt work anymore",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316341",
"author": "MK",
"timestamp": "2011-01-28T04:34:22",
"content": "Another great tool for popping the IC package is a $3 electric fly swatter. Used one with a resistor as a low tech method of apply a simulated esd event to a chip as part of and FA debug. After I got the needed results applied it full force to the QFN parts and they would jump and blow the package apart. The simple joys in life. Under the microscope the silicon looked like a cd placed in the microwave.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316467",
"author": "Jaspel",
"timestamp": "2011-01-28T05:30:50",
"content": "@PeterEver get to see one running, decapped in a sem? That is awesome. I love my job. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "317179",
"author": "Peter",
"timestamp": "2011-01-28T21:29:53",
"content": "@JaspelAfraid not. That sounds really neat!I’ve heard that you can probe the running circuit with a SEM, getting voltage levels without physical contact. Is that true? That would be interesting for reverse engineering work.The two debug groups I worked in were sort of last-ditch low-effort trouble-shooting teams.Most of our work was just blindly rerunning the original simulation and looking for obvious failures. Or working to shepherd devices through wafer sort.But for older devices, it was a real pain. The designers had moved on. We didn’t even have a valid license for the EDA software in some cases. Some of the EDA vendors had gone under. The simulations had to run on Sun OS boxes with the date set back.The big push at the time, I vaguely recall, was for “Design for Test” and JTAG. I missed out on that because I ran off to join the Linux circus in 2000. I haven’t worked in the Semiconductor industry since…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "317230",
"author": "DarkFader",
"timestamp": "2011-01-28T22:33:28",
"content": "Luckily I have a stack-overflow check in my main loop. Doesn’t work against infinite recursion though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "318478",
"author": "Jaspel",
"timestamp": "2011-01-30T03:45:22",
"content": "@ PeterWith proper hardware, I don’t see why not. Our EDX is running win3.1 with no support. As an independent bottom feeder, we won’t upgrade until it dies.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "523214",
"author": "eeks",
"timestamp": "2011-12-01T01:29:28",
"content": "damn good reason to current limit during devtime. Good job ! p.s YUCK to atmels, Viva la PIC ;)",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,293.879664
|
||
https://hackaday.com/2011/01/27/official-hackaday-forums/
|
Official Hackaday Forums
|
Caleb Kraft
|
[
"News"
] |
[
"community",
"forum"
] |
Yes, finally, we
have a forum
. We get regular requests, both in the comments and in our email for a hackaday forum. We put it in operation a few days ago and started letting people trickle in and it hasn’t completely blown up in our faces. Please join us there and help build our community. Also, notice there is a button for it over on the right column now.
Some items of interest or common answers to common questions:
No illegal activities allowed. Yes, we have the word “hack” in our name. That does not mean that we will hack a website for you. (we get that request weekly).
Keep it moderately clean. Sure you can cuss, this isn’t a kids site, but no pronography/gore please.
No personal threats.
There will be google ads. We are trying really hard to balance the business with the fun, so bear with us. So far, they aren’t in the way. We have no plans on going overboard.
This will be readable without a login. You must register to post.
We’re working out the kinks. Please report any problems to caleb@
That’s it, enjoy and be civil.
| 27
| 25
|
[
{
"comment_id": "315776",
"author": "Phil",
"timestamp": "2011-01-27T16:07:27",
"content": "Super :). Thanks for the Forum. Waited long for it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315777",
"author": "java",
"timestamp": "2011-01-27T16:08:40",
"content": "about time lol",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315785",
"author": "japkin",
"timestamp": "2011-01-27T16:22:51",
"content": "“Please report any problems to caleb@”Would that becaleb@——.com?-edit- I’d rather not post in entirety here to avoid mass spam influxes -caleb",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315793",
"author": "Anthony C",
"timestamp": "2011-01-27T16:34:35",
"content": "Elcellent. Glad it is up and running and am signing up now. Been waiting a long time for this and feel a Hack a Day forum will be very successful.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315794",
"author": "osgeld",
"timestamp": "2011-01-27T16:35:59",
"content": "no japlin itscaleb@nickjr.com",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315819",
"author": "notmyfault2000",
"timestamp": "2011-01-27T17:20:37",
"content": "Eww phpBB. Should’ve gone with MyBB…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315829",
"author": "smoker_dave",
"timestamp": "2011-01-27T17:26:49",
"content": "Let the trolling commence…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315838",
"author": "osgeld",
"timestamp": "2011-01-27T17:45:12",
"content": "eww MyBB, ok I am not the biggest fan of phpBB but myBB? really? its written by a 12 year old, has bad support, squat themes or extensions, incompatible with anything else, and the last forum I had the pleasure dealing with it would corrupt its own database twice a month like clockwork",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315843",
"author": "CutThroughStuffGuy",
"timestamp": "2011-01-27T17:55:16",
"content": "Why no NSFW content? People hack those things too.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "315845",
"author": "Caleb Kraft",
"timestamp": "2011-01-27T17:58:02",
"content": "@cutthroughstuffguyas long as you’re not posting porn, I think we’re alright.",
"parent_id": "315843",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "315859",
"author": "anon",
"timestamp": "2011-01-27T18:28:39",
"content": "NOT A HACK!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315862",
"author": "strider_mt2k",
"timestamp": "2011-01-27T18:32:46",
"content": "Not “A” hack -(potentially) tons of them!Not the first time I said thank you for making the forums, and probably not the last.AWESOME",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315875",
"author": "biozz",
"timestamp": "2011-01-27T18:55:53",
"content": "FINALLY a place to draw the trolls away from the main HaD pages!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315942",
"author": "CutThroughStuffGuy",
"timestamp": "2011-01-27T21:26:46",
"content": "I was thinking more along the lines of slashdong content…. teledildonics. Bluetooth or arduino powered “toys”. Nothing explicit and still quite interesting but still probably fairly prefaced with a NSFW tag just to give people a heads up.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315944",
"author": "CutThroughStuffGuy",
"timestamp": "2011-01-27T21:28:13",
"content": "Kinda gives new meaning to the term “hard hacks” though. *grin*",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316154",
"author": "idiot.bot",
"timestamp": "2011-01-28T00:53:30",
"content": "I have no idea what 75% of the post are on about… as an enthuiastic and ambitious dilettante this is hog heaven.Life is about to get waaaay more interesting – hello steep learning curve…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316226",
"author": "Frogz",
"timestamp": "2011-01-28T02:34:23",
"content": "guess i cant post my steam powered dildo…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316264",
"author": "bluewraith",
"timestamp": "2011-01-28T02:54:30",
"content": "@FrogzNot sure if your serious or not, but one was posted on HAD before.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316365",
"author": "CutThroughStuffGuy",
"timestamp": "2011-01-28T05:10:36",
"content": "Yes it was. It was also quite hot. Literally :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316550",
"author": "xm",
"timestamp": "2011-01-28T07:34:21",
"content": "The registration captcha has me pretty stumped =\\“What is the greatest site in the world? (www.xxxxxxx.com)”",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "316799",
"author": "Caleb Kraft",
"timestamp": "2011-01-28T13:44:08",
"content": "@xm it is “www.hackaday.com”",
"parent_id": "316550",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "316678",
"author": "error404",
"timestamp": "2011-01-28T10:03:13",
"content": "Mixed case and alphanumeric passwords required for a forum? Really?Well, alright…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316764",
"author": "matyvico",
"timestamp": "2011-01-28T12:41:51",
"content": "It is the cherry of the cake xD congrats!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316797",
"author": "foo",
"timestamp": "2011-01-28T13:32:40",
"content": ">We’re working out the kinksdoes comment that relate to the no pron rule?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316807",
"author": "Jay Frossard",
"timestamp": "2011-01-28T14:10:57",
"content": "Aee em fim um fórum !!! Thanks",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "587696",
"author": "keilah",
"timestamp": "2012-02-23T16:25:21",
"content": "can’t register..hat is the greatest site in the world? (www.xxxxxxx.com)hackaday is not the answer?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "651994",
"author": "Monroe Hlastala",
"timestamp": "2012-05-16T14:24:16",
"content": "Thanks for good info :)",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,294.09058
|
||
https://hackaday.com/2011/01/27/plug-and-prey-malicious-usb-devices/
|
Plug And Prey: Malicious USB Devices
|
Caleb Kraft
|
[
"Android Hacks",
"Security Hacks"
] |
[
"hid",
"keylogger",
"usb"
] |
This very informative talk given at Shmoocon 2011 has been posted over at IronGeek. Covering all kinds of angles that a person could
attack someones computer through the USB port
, this should be read by anyone who is security minded at all. No matter which side of the port you tend to be on, this article has great information. They cover some common attack methods such as keyloggers and fake keyboards as well as some common methods of securing your system against them. We’ve actually seen this in the news a bit lately as people have been using the
keyboard emulation method in conjunction with android phones
to hack into systems.
[thanks Adrian]
| 21
| 21
|
[
{
"comment_id": "315764",
"author": "operative",
"timestamp": "2011-01-27T15:43:24",
"content": "Wasn’t this at Shmoocon 2010? Also, relies on mostly the same technics as it uses the teensy boards and emulates keyboards (or other HID for that matter)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315765",
"author": "operative",
"timestamp": "2011-01-27T15:45:02",
"content": "http://www.irongeek.com/i.php?page=security/programmable-hid-usb-keystroke-donglethat’s what i meant.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315773",
"author": "Gdogg",
"timestamp": "2011-01-27T15:59:42",
"content": "This was one of my ideas I had years ago and never acted on :(You could also put a keylogger right into a keyboard, and so it doesn’t need to be recoverable, have it detect a period of inactivity, and use that ‘alone’ time to send its log off.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315774",
"author": "Kemp",
"timestamp": "2011-01-27T16:02:33",
"content": "If someone has physical access to your machine then it’s game over anyway. Why bother going to all the trouble of using a phone to emulate different devices and send a sequence of keystrokes that may or may not be the right ones to achieve something? There is already a keyboard, and I’m sure the person is fully capable of pressing keys.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315780",
"author": "Paul",
"timestamp": "2011-01-27T16:19:26",
"content": "kemp:In a lot of cases there won’t be a keyboard.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315798",
"author": "Kemp",
"timestamp": "2011-01-27T16:42:02",
"content": "So what we’re relying on here is a supposedly secure system, with no input devices, in a room by itself (preventing you from pulling a keyboard from another machine), to which random strangers are given physical access and which is left permanently logged into an account with admin privileges? (Random strangers because a disgruntled employee will just take a keyboard from another room easily enough, and logged in because no where in this “hack” is there a way to magically bypass security.) No offense, but this is gradually sounding more unlikely.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315800",
"author": "3-R4Z0R",
"timestamp": "2011-01-27T16:46:43",
"content": "Why hasn’t there been anything about USBs DMA-access that could be used to read a PCs RAM-contents directly without ever installing a driver on the host?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315808",
"author": "metali",
"timestamp": "2011-01-27T17:03:47",
"content": "To everyone out there, do not use keyloggers besides for home use. I can almost guarantee that you will be caught. I recently got caught and seriously regret it. So to all students and everyone else in the workforce. Dont mess up as I did.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315811",
"author": "ota benga",
"timestamp": "2011-01-27T17:12:34",
"content": "Metali,I’ve had a keylogger on my girlfriend’s computer for 4 years now. Never got close to being caught. You must have been terribly obvious.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315816",
"author": "Henrik Pedersen",
"timestamp": "2011-01-27T17:17:23",
"content": "@ota bengaYou and metali have some serious problems….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315818",
"author": "Morgen",
"timestamp": "2011-01-27T17:19:57",
"content": "@bengaWow…that’s just really sad on a whole lot of levels…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315820",
"author": "rallen71366",
"timestamp": "2011-01-27T17:21:03",
"content": "My wife and I are currently enrolled in a Computer Network and Database Security curriculum, and even though the instructors haven’t covered USB-based attacks yet, the students are all very intelligent, curious individuals, and read about this stuff. We are the soon-to-be professionals that will be looking for this stuff.@Kemp – I can think of a few cases where malicious USB devices can be very effective. Having a USB drive commit a dictionary based attack while the user is distracted by some simple game, or porn-based entertainment, is just one. I new of an individual a couple years ago that bought some flash drives, installed some spyware/viruses and music on them, then dropped them off at the local mall food court.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315856",
"author": "0x4368726973",
"timestamp": "2011-01-27T18:22:11",
"content": "@rallen71366Even better to use el-cheepo MP3 players instead of thumbdrives.As always, be aware of any device connected to your computer.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315861",
"author": "Wolfton",
"timestamp": "2011-01-27T18:32:42",
"content": "I was an Intelligence Analyst and I now work in the IT field. I can see several potential targets for USB device attacks that all have varying degrees of effectiveness and if used (im)properly can be very profitable for the attacker.Some possibly obvious locations are:shopping mall kioskslibrariesFed EX/Kinkos, UPS Stores, and the likeschoolsfinancial institution kiosks and unmanned desksinternet cafestax preparation centersretail stores that use WinCE to run their registers@Metali I hope you’ve learned not to use this technoology improperly@ota benga You have some SERIOUS trust issues. You’re spying on her and can actually be prosecuted and serve a prison sentence for that. If you’ve been together for that long, you’re not married then you and she might both need to move on. I encourage you to look into cases where a husband has gone to jail for spying on his wife and catching her having an affair on their family computer.I once looked in my ex-wife’s email sent items (she had given me her password and asked me to check her inbox for me) and I found evidence that she was cheating. I went to her social networking site of choice and found further evidence (didn’t have to log in) and then I found pictures and videos on both a Micro SD card and on the hard drive of MY computer that confirmed my suspicions.Even going into her sent items with a password she provided to me could have been considered a form of trespassing and I received some good advice NOT to declare that as a source of my information. Because of this, I filed for divorce citing irreconcilable differences, rather than adultery, so now I have to pay alimony.My point is that even if you get the information you’re looking for when spying on others, you can’t use it to its fullest potential without consequences that outweigh the benefits.@rallen71366 Do I know you? Did we take some classes together in Korea? If not, I’m sorry for the confusion. Anyway, that food court thing is devious. I applaud that individual’s creativity in deployment, even though I deplore the rest of that activity. While it may seem simple to some, most people who don’t know anything about computer security will simply pick up and take the thumb drives and take them home for personal use. This looks like a hardware adaptation of the Trojan based attacks. What could make that particularly evil is to use this method to turn these home computers into zombies and launch DDoS attacks from all these unsuspecting users’ locations. Oh, and if any of them are foolish enough to take a ‘found’ device to a work computer then they could be in even more trouble.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315872",
"author": "Kemp",
"timestamp": "2011-01-27T18:42:22",
"content": "“Having a USB drive commit a dictionary based attack while the user is distracted by some simple game, or porn-based entertainment, is just one.”It’s not the use of USB devices as an attack vector that I’m debating so much (I can see how that would work in several cases – taking advantage of auto-run is an example mentioned in the linked article – though Firewire is, of course, the more well-known option). What I’m debating is the use of a keyboard emulator like everyone has been raving about recently. If the user is present then they’re going to notice something trying to type on their system (windows popping up, things actually being typed, etc). If the user isn’t present then you must have got physical access yourself to install the device, so there’s no point using it.Am I overlooking some basic element of the technique here?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316043",
"author": "piercedgeek",
"timestamp": "2011-01-27T23:04:50",
"content": "@ KempOne example of how such a thing could be useful: While the machine is locked, such a device could be plugged in (say, after-hours by a ‘janitor’). The device can have a sound sensor that triggers a set of commands that would create a new user account in Active Directory when the room has been silent for 20..30..whatever… minutes.This would assume/hope that the admin has walked out of the room, leaving their station unlocked (not as uncommon as you’d think, especially if this is a high level person with their own office, or the machine is behind a locked door of some sort).Something else I’d consider having it do, is activate a key press (maybe scroll lock on/off) every 9 or 14 minutes, depending on their screen lock policy, this would allow it to sit for longer, as it waits for an extended period of silence before delivering.Or heck, simply having the station remain forever unlocked could be helpful to the ‘janitor’ who will be in later that evening.Of course locking their workstation when they get up would nullify this, but you and I both know that companies enforce group policies that force lockouts after inactivity because a lot of people DON’T windowkey+L when they stand up.oh, and one more thought for payload; launch a web browser to some sort of remote assistance page (webex, goto my pc, etc…) to allow the attacker full access to the machine without even needing to go back.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316158",
"author": "Niru",
"timestamp": "2011-01-28T00:58:46",
"content": "lol: if you catch your spouse cheating – using YOUR computer, YOUR internet connection, then SHE is the one doing the trespassing. There’s other ways to work that, including using the “illegally” obtained evidence to find ways to legally obtain the information you need to get an adultery divorce, but sounds like that boat has sailed. Hell – in some states, you can sue the other guy. I understand it’s not common, but when it’s tried, it’s often successful if you live in New Mexico.*shrug* I guess it depends on jurisdiction – so look up your state laws; but there are states (like New York) where it’s virtually impossible to get a divorce, and then there are states, like Missouri, where if you catch your spouse cheating, you can just about get away with assault. No matter how happy you are in your relationship, it’s ALWAYS a good idea to consult a lawyer BEFORE you get married. BEFORE you even start digging around (if you’re already married). BEFORE you confront a suspected miscreant. Always a good idea to have a pre-nup – I have told my kids they don’t get my “blessing” to marry unless they have a pre-nup.Alimony – wow, in the 21st century. That’s just f–king extortion.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316198",
"author": "Kemp",
"timestamp": "2011-01-28T01:43:52",
"content": "Thanks for the explanation, that makes more sense. It still seems to be of incredibly limited scope, but at least now I can see a real usage scenario.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316673",
"author": "Chamunks",
"timestamp": "2011-01-28T09:56:10",
"content": "Kemp, why not even do something like embed a micro USB hub into the dongle, and inside this dongle you have this piggy back keylogger/keyboard emulator along side two storage units the one storage unit is used to store dummy files and the second storage unit is essentially write protected to the user but the keylogger/keyboard emulator can read write to this storage device, also it can be used as a way to covertly store a package for deployment of some kind.The possibilities are endless. Where I live its illegal to record video/voice of someone without their consent for legal/commercial reasons but transcriptions of said audio are legal for use. Just an abstract comparison but I’m sure this information is enough to help even by feeding this gathered information to a P.I. or something along those lines.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316808",
"author": "Prozacgod",
"timestamp": "2011-01-28T14:17:50",
"content": "Oh finally a write-up on this – I created a virtual Keyboard on my GP32 about a year or so after they were released – WalMart kiosk computers often implicitly trust the keyboard – then when SparkFun started shiping the AVRStick this is actually the first thing I got it for – my POC did a [Win]+R and typed debug – and then typed out the TinyPE executable for downloading and executing a payload, there was just enough flash in the ATtiny85 to pull it off.I had a more innocuous version that would [Win]+R – notepad.exe and then typed out the hacker manifesto for a laugh – I wrapped it in a plastic shell from a thumb drive and left it in the office for fellow hacker geeks to get that “oh crap” feeling in their guts ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316957",
"author": "Paul",
"timestamp": "2011-01-28T17:21:33",
"content": "I always love people like Kemp that have absolutely no imagination.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,294.02891
|
||
https://hackaday.com/2011/01/27/the-pirate-box/
|
The Pirate Box
|
Caleb Kraft
|
[
"Security Hacks",
"Wireless Hacks"
] |
[
"piracy"
] |
One of the most fun aspects of a LAN party was exploring the shared files of all the other users on the network. There were people that would show up, solely for the file swapping. That is exactly what this project is about. From the projects wiki, the
Pirate box
is a mobile p2p sharing and collaboration platform. Basically it is a wireless hotspot with a slick interface and a shared folder. It doesn’t connect to the internet, and it doesn’t log any connections. You can have a file swapping session simply by flipping it on and sharing its space with other people. They’ve included a step by
step guide to setting up your own
, but if you’re going to do some subversive file swapping we might suggest putting it in a less conspicuous enclosure. Imagine this as a portable verion of
dead drops
.
| 21
| 21
|
[
{
"comment_id": "315717",
"author": "mccand",
"timestamp": "2011-01-27T14:04:29",
"content": "All I can think about after this article is a scene from the movie “Hook”:Captain Hook: Yes, you made a boo-boo.Pirate: I did. I did!Captain Hook: The Boo Box.Pirate: Not the Boo Box! NOO!!My apologies to anyone else who is about to have that same problem.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315726",
"author": "Aaron",
"timestamp": "2011-01-27T14:18:35",
"content": "“Dead drop”? Since when do those advertise themselves as “LOL HEY I GOT WAREZ HEAR” while also making themselves susceptible to radio direction finding?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315753",
"author": "wn7ant",
"timestamp": "2011-01-27T15:18:27",
"content": "I’m an amateur radio operator, and have done RDF in the military. Why are you worried about RDF? Set this up in an area that you can see around you. A park, a library (the rooms here in the library have glass walls), or outside a coffee shop. Then never set up in the same area twice in a year. You’ll need 52 locations to LAN party at (I thought of 20 off the top of my head). If someone does call some form of authority, you’ll be done and gone before they can arrive, and you won’t be back for a year. The vehicles/antennas used are easy to spot. Shut down if you get worried. Understand the ONLY way you get caught, is if you are stupid.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315769",
"author": "wonkowonka",
"timestamp": "2011-01-27T15:53:18",
"content": "This same thing could be accomplished with a wrt-54g if you added a sd slot. One plug, smaller form factor. You probably could power it by battery quite easily. A lot cheaper, especially if you have an old router lurking in the shaddows.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315815",
"author": "chango",
"timestamp": "2011-01-27T17:15:32",
"content": "How about not having to carry a lunchbox with an antenna and skull-and-crossbones if you’re worried about being a moving target?If you MUST have a lunchbox with an antenna and a skull-and-crossbones, at least put up some real pirated content.Old Android phone, AP mode. Put the appropriately logoed patch on your pants if you must.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315847",
"author": "Paranoiac",
"timestamp": "2011-01-27T18:01:52",
"content": "Damn. Every time I think I have a project idea that is somewhat original, it shows up here. Here’s my spin on the project.Not to be too paranoid, but with state governments here in the US being courted to declare bankruptcy, I don’t feel it’s too big a stretch to think we could have major disruptions of public services soon. I have developed something of a compulsion to hoard information, both entertaining and potentially useful. As a way to share my paranoia and build some kind of redundancy into this semi-doomsday archive I wanted a way for people to mirror it without being subject to ISP monitoring.So with this project the hardware is taken care of. All I would add is automated mirroring and secured access (I really don’t want to bring down big media or anything, so I don’t want to create a feeding frenzy of piracy.) Anybody interested in joining such an effort? If so, I’ll put this project on the front burner.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315864",
"author": "strider_mt2k",
"timestamp": "2011-01-27T18:34:36",
"content": "Approved by Trianna Orpheus.(Go Team Venture)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316027",
"author": "Paul Potter",
"timestamp": "2011-01-27T22:46:09",
"content": "Superb. Very impressive.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316063",
"author": "nightwork",
"timestamp": "2011-01-27T23:21:26",
"content": "Half of the fun of a lan party is indeed sharing files. This is an awesome tool for doing that. I am curious if it is possible to do the same idea but wired? Additionally, what if you want access to the internet. As much as I like swapping files, I would not like to be disconnected from the internet to do so. Can you be connected to a wired network for internet, and connected to this wifi network for file swapping simultaneously?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316188",
"author": "Volectorus",
"timestamp": "2011-01-28T01:35:29",
"content": "Went to the site, clicked the DIY link. total link fail… ugh",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316197",
"author": "Volectorus",
"timestamp": "2011-01-28T01:43:14",
"content": "/\\/\\ I retract that. prolly got a 404 from maint…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316506",
"author": "mediamind",
"timestamp": "2011-01-28T06:22:49",
"content": "The link is good – the site was just getting slammed with traffic. Seems to be loading fine now.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316654",
"author": "anufaq",
"timestamp": "2011-01-28T09:27:36",
"content": "Does anyone know what happens when the hard drive fills up?Does it automatically override the oldest? or the oldest accessed? or it just doesn’t allow uploads.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316875",
"author": "No1",
"timestamp": "2011-01-28T16:17:07",
"content": "From the links on the DIY page the build cost looks more like $141.20 excluding case and battery, or 226.07 in total (not including shipping).Why complicate things this much? Wouldn’t a G1 do the job? prices start well under $100 (http://www.amazon.com/gp/offer-listing/B002TUC6I8/ref=dp_olp_0?ie=UTF8&redirect=true&qid=1296227316&sr=1-7&condition=all), so plenty leftover for a memory card.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "317037",
"author": "JimJim",
"timestamp": "2011-01-28T18:45:27",
"content": "What about just using an Asus WL-520GU and booting debian off that? You could minimize costs and parts, and the for sure could run off a smaller battery pack.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "322300",
"author": "Doc Oct",
"timestamp": "2011-02-03T16:46:32",
"content": "@Nol, Looks like prices start at $150.I wonder if any of the legion of inexpensive android tablets from china could do this. They have some that I’m sure are crap for their original purpose because of anemic 300/400mhz chips, 128mb ram, etc for $60-$70 on alibaba. Someone would need to get one and see if the wifi chipset can be used like an AP or if it doesn’t work in promiscuous mode. Most of those tablets support up to 32gb microsdhc and some even say they support usb2.0 host for external flash drives.I could see something like this running UUCP and stuck in some cars for their daily commute. It could automatically sync over wifi at separate stops and allow a sort of wifi sneakernet without necessarily making someone use gas that they wouldn’t otherwise be using anyways. ‘course, for email or other low bandwidth items, a telephone or direct radio link would probably be better anyways. A UUCP-based P2P filesharing network would be a wonder to behold though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "327149",
"author": "hOaX",
"timestamp": "2011-02-08T18:28:59",
"content": "This looks like alot of fun…im going to get some money put back and give it a go.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "329268",
"author": "roswellaliens",
"timestamp": "2011-02-10T18:56:51",
"content": "or an aspire one or msi wind motherboard would also work, plus these have internal dual miniPCI slots.Two wifi cards = twice the bandwidth :-)Plus you could use a serial to USB connector in order to point the individual antennas to maximise signal strength.Plus *2 they also support SDHC up to 32GB *2, and draw very little power if underclocked a bit.Only spin the HDD up when needed, for initial bootup then stop spinning.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "461499",
"author": "dimitris",
"timestamp": "2011-09-22T01:28:25",
"content": "cool",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "564978",
"author": "Methodic",
"timestamp": "2012-01-23T01:36:08",
"content": "Might be a good idea:http://www.reddit.com/r/politics/comments/os1ys/boycotting_hollywood_using_piratebox/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "1312058",
"author": "mattadlard",
"timestamp": "2014-03-29T10:27:09",
"content": "Reblogged this onadlardmatthewand commented:Anarchy Inc.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,294.388757
|
||
https://hackaday.com/2011/01/26/disguise-your-acura-nsx-as-a-ferrari-f50/
|
Disguise Your Acura NSX As A Ferrari F50
|
Caleb Kraft
|
[
"Transportation Hacks"
] |
[
"acura",
"f50",
"ferrari",
"nsx"
] |
We know what you’re thinking. “I have this Acura NSX, but my friends just won’t think I’m cool unless I have a Ferrari F50.” You know what? You’re right. To save yourself from that kind of ridicule, you can simply carry out a
ridiculous body mod to make your poor NSX live up to your friends expectations
. It only took massive amounts of fiberglass, foam, and bondo to get this NSX looking the way the guy wanted it. We have to wonder if there was any performance hit with the additional weight, then again, he may have removed enough metal panels to compensate. While we may joke about it, we really do have some respect for the amount of work he put into this thing. The finished job is simply amazing, in terms of reproduction of the original. Kudos crazy car modder guy.
| 61
| 50
|
[
{
"comment_id": "315179",
"author": "Hoopstar",
"timestamp": "2011-01-26T23:08:15",
"content": "The NSX’s body is all aluminum, so I doubt removing any of the panels would result in much (if any) weight loss..End of the day, this ‘hack’ is all about looks and nothing about performance which is a massive FAIL in my book.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315184",
"author": "Meee",
"timestamp": "2011-01-26T23:17:42",
"content": "This is a ricer creation. You know the kind of cars with a exhaust tip bigger than the muffler.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315189",
"author": "Techrat",
"timestamp": "2011-01-26T23:21:52",
"content": "Bud Light Presents: Real Men of Genius.We salute you Mr. Crazy Car Modder Guy(crazy car modder guy)You think nothing of taking a decent vehicle that may have already cost a pretty penny, and ruining it with fiberglass add-ons held on by sheet metal screws and duct tape. (those stickers make it go faster)Yes, master of the muffler, that tin-can that makes your car now sound like a psychotic lawn-mower. (annoy the neighbors!)Crack open a Bud Light and enjoy it fast and furiously. And remember, don’t drink and drive.(Mr. Crazy Car Modder Guy)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315191",
"author": "Sinzia",
"timestamp": "2011-01-26T23:25:34",
"content": "I’ve seen this type of crap before with (I think) pontiacs made to look like ferraris. It was stupid back then, its still stupid now.That NSX was an amazing car before this chop job.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315192",
"author": "Marco",
"timestamp": "2011-01-26T23:28:31",
"content": "NSX was my dream car as a teenager. Putting cheap fiberglass on it is sacrilegious.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315194",
"author": "Paul Potter",
"timestamp": "2011-01-26T23:31:45",
"content": "@Techrat BrilliantCrazy, but kind of cool.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315196",
"author": "sexiewasd",
"timestamp": "2011-01-26T23:34:45",
"content": "Seriously? That nsx WAS as much of a classic as the Ferrari is, now it is neither classic, nor desirable. I will say that it came out well though, I have respect for the work that was done, just not the choice to do it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315201",
"author": "biozz",
"timestamp": "2011-01-26T23:38:32",
"content": "buying a ferrari because it looks like a ferrari is a spit in enzo ferrari’s face (his own words)making a car that drives like a golf cart and making it look like a ferrari is like kicking him in the balls XD (not so much his own words XD)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315209",
"author": "JA",
"timestamp": "2011-01-26T23:47:24",
"content": "And this modification should make it .. better? I don’t have opinion about nsx but among the long line of European supercars (and even Ferraris) the F50 is ugly as hell.Maybe it’s good target for a replica build because there’s so much room for errors :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315213",
"author": "Alex",
"timestamp": "2011-01-26T23:56:45",
"content": "The NSX is a very nice car. I’m not sure why you’d want to do this to it. :/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315217",
"author": "Edd",
"timestamp": "2011-01-27T00:02:43",
"content": "I’d rather have the NSX.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315220",
"author": "aztraph",
"timestamp": "2011-01-27T00:07:47",
"content": "do it with legos.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315227",
"author": "woutervddn",
"timestamp": "2011-01-27T00:15:00",
"content": "okay,I understand why some people here are talking about it being a shame. But OMG.. this is sweet. If he’d done this with a real ugly car (geo metro or something) it would be more than awesome!It sure proves that you can make everything out of some foam and fiberglass..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315233",
"author": "DanS",
"timestamp": "2011-01-27T00:20:13",
"content": "I suppose there are worse ways to ruin a car..I would have just put a supercharger on the NSX and smoked the Ferrari.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315238",
"author": "mic",
"timestamp": "2011-01-27T00:27:56",
"content": "EWWWWWW. Slower and uglier. I hate ricers but I have seen some with real mods, like a 850 lb car with 200 hp engine. Just a skeleton with a seat and engine.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315242",
"author": "AllThatJazz",
"timestamp": "2011-01-27T00:31:41",
"content": "Why does this call to mind photos of a redneck’s beater with a plywood wing bolted on back?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315253",
"author": "nah!",
"timestamp": "2011-01-27T00:47:20",
"content": "reminds my of the southpark episode where the devil wants a ferrari cake for his partythis guy should do ferari ripoff kits for acuras, so more people can enjoy te benefits of ruining their cars",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315265",
"author": "strider_mt2k",
"timestamp": "2011-01-27T00:54:42",
"content": "Okay I’ll be that guy.Why is this here?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315268",
"author": "MrX",
"timestamp": "2011-01-27T00:56:52",
"content": "@micyou talking about the Ariel Atom? :P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315299",
"author": "DeadlyFoez",
"timestamp": "2011-01-27T01:47:42",
"content": "@Techrat, I literally LMAO reading what you wrote. Absolutely hilarious.I can appreciate the work that the owner put into this and he did a great job at it.I personally would find this as a waste of time and effort, but to each his own…right?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315303",
"author": "rickroll",
"timestamp": "2011-01-27T01:54:02",
"content": "Give this guy major creds for execution, but take away even more for being a total douchebag.The NSX is possibly even a better performer than the F50.He could have entertained most people if he had just swap off the Honda emblems for some Ferrari livery.Not looking forward to his Corvette to Viper project.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315309",
"author": "Stealth",
"timestamp": "2011-01-27T02:04:11",
"content": "Wow such an old post.. cant belive its getting posted here lol i remember i saw this post in an asian web page back in 2003 or 2004",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315315",
"author": "Ultimatejim",
"timestamp": "2011-01-27T02:14:34",
"content": "I wouldn’t classify this as a hack.I’d call it a giant waste of time.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315316",
"author": "Luiz",
"timestamp": "2011-01-27T02:19:44",
"content": "Is today 2004 again? This was from this original post back in 2004…http://www.6park.com/enter7/messages/gvk21098.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315326",
"author": "Jake",
"timestamp": "2011-01-27T02:44:00",
"content": "WTF, hackaday, people have been doing this forever. I remember seeing a fiero converted to a “ferrari” almost 15 years ago, and it wasn’t a new thing then.Fail, fail, fail. You guys never cease to find something ancient that has been done a thousand times over, and then speak of it like it’s something new and remotely exciting.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315328",
"author": "Justin",
"timestamp": "2011-01-27T02:46:06",
"content": "So sad. An NSX is such a cool car, even if it was somewhat slower than expected when it came out. To do this to a classic is a shame, when affordable “supercars” are only getting rarer.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315329",
"author": "jim",
"timestamp": "2011-01-27T02:53:20",
"content": "I’m shocked how many people don’t understand how much higher performance an F50 is to an NSX.That said, car replicas kind of suck, especially when the base is a good car — should have used a Fiero.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315385",
"author": "no",
"timestamp": "2011-01-27T04:14:26",
"content": "what does higher performance mean?power? surehandling? nopeon smaller track they are the same, go watch best motoring :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315436",
"author": "Jeditalian",
"timestamp": "2011-01-27T05:34:32",
"content": "Aww, not a LEGO Ferrari?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315442",
"author": "caleb",
"timestamp": "2011-01-27T05:39:52",
"content": "for all of you who hate ricers, good luck finding better quality, except perhaps in a german car. dont you so called “hackers” have even a clue where most of your technology comes from?as for the body work, im not a fan of ferrari, but nice build",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315445",
"author": "Durgledoggy",
"timestamp": "2011-01-27T05:47:17",
"content": "I never thought I would be THAT guy, but, HaD … come on!This is just ricer bullshit. Pure aesthetics with no performance gain at all. And not even good aesthetics.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315451",
"author": "solex",
"timestamp": "2011-01-27T05:57:30",
"content": "To caleb,People that have problems with ricers don’t have problems with the base level car. Honda Civics, Acura NSXs, etc, these are not bad cars. They are also not ricers. It’s when people bolt on XTREEEEEME mufflers, wings, body kits, and other silly add-ons, that they fall into the domain of ricers, and also the domain of being made fun of incessantly.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315473",
"author": "gunner",
"timestamp": "2011-01-27T06:42:27",
"content": "i admire the sheer amount of custom work involved in something like this but WHY an NSX, with the money that car cost by its self (typically well north of 20 grand iirc)you could have built a custom tube chassis and the whole nine yards. made something REALLY special, not a hacked up super-honda.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315526",
"author": "Jeditalian",
"timestamp": "2011-01-27T08:28:07",
"content": "it needs go-faster stripes, which are scientifically proven performance enhancing addons",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315540",
"author": "Jeditalian",
"timestamp": "2011-01-27T08:41:52",
"content": "i wish i could edit my posts, so i wouldn’t have to triple-post when i decide to say something more, but i would find it much more amusing if someone were to put all this work into making an old&busted (jalopy) car look good. start off with any wrecked car, be it a pinto, tempo/topaz, chevy lum-lum (lumina), taurus/sable.. maybe even a truck, although you would most likely be destroying all the usefulness of having a truck bed, strip it down to the frame and build a supercar body on it, so it is the exact opposite of a sleeper. low performance on the inside, high performance on the outside. the obvious next choice is to sell it on eBay for a tempting low price, like starting off at $0.01. ??? Profit!get a dodge viper and a dodge stealth, swap bodies.. OK even if it is just for looks, i commend this (crazy modder guy) for the amount of work involved, all that work done just for teh lulz. that’s why i would do it. people see a fast looking car, want to race, then beat you, while you lol",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315574",
"author": "ejonesss",
"timestamp": "2011-01-27T09:09:12",
"content": "i think there was a kit once to convert a vw bettle into a sports car.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315575",
"author": "Spork",
"timestamp": "2011-01-27T09:09:58",
"content": "There is no denying that the work put in is awesome. To have it come out looking clean is just a wonderful thing.That said, I agree with everyone and would NOT wreck an NSX like this.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315630",
"author": "caleb",
"timestamp": "2011-01-27T10:15:47",
"content": "@solexagreed. i should have clarified, i have issues your typical “rice burners” as well. i wish theyd stop falling apart on the highway infront of me.. however i have been fortunate to witness and experience what some proper tuning and mods can do to a 3000 dollar japanese four-banger.my apologies if my grammer is a bit off, i have a new baby.. and i should be sleeping",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315649",
"author": "Stevie",
"timestamp": "2011-01-27T11:19:59",
"content": "Whats with the chunk front end? Looks odd",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315680",
"author": "Davo1111",
"timestamp": "2011-01-27T12:44:48",
"content": "I’d choose the NSX. But yeah, well done to the guy",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315708",
"author": "Spidy9",
"timestamp": "2011-01-27T13:39:23",
"content": "I hope this gets someone laid. I’m sure there’s people who don’t know what an NSX is that would be impressed by a Fauxarri. This isn’t for the people who know better…this isn’t for driving pleasure. Left the same feeling in my gut as finding a Sinistar converted to a Arkanoid…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315718",
"author": "fartface",
"timestamp": "2011-01-27T14:05:56",
"content": "Wow. exceptionally stupid.a NSX is far better to own than any Fararri made.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315721",
"author": "s1500",
"timestamp": "2011-01-27T14:15:53",
"content": "I never liked automotive dress-up. I would be proud to own an NSX. Wouldn’t compare it to arcade conversions either since that’s a functional change, not just cosmetic. Arcade conversion kits are/were the norm in the industry.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315742",
"author": "James",
"timestamp": "2011-01-27T14:46:11",
"content": "More money than sense but not enough to get an F50, the NSX is a great car – don’t spoil it with fibreglass.That said, the execution of the cosmetics is great and while im a function over form person I can see the skill involved. Still, makes the car slower and it’s still “not an F50”.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315746",
"author": "Masta Squidge",
"timestamp": "2011-01-27T15:01:07",
"content": "At least when the Fiero guys do it they put serious, nearly professional effort into the car AND start with a car that isn’t worth a damn thing to nearly anyone anyways.Ive seen some very professionally done Fiero conversions, complete with very powerful supercharged 3800 motors or even small block V8s in them putting down some healthy performance.This… this is a mockery of an NSX.Granted, the end result looks great and probably does a pretty good job in terms of performance. Regardless… thats like taking a 69 Camaro and turning it into a tornado tank.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315755",
"author": "Coligny",
"timestamp": "2011-01-27T15:20:34",
"content": "For th3 h4t3rz…These pictures are from Japan… and mind you… NSX are still quite easy to find and really far from expensive. The lack of bootspace and easy access to R32-33-34 Nissan GTR don’t even make them really interesting.Sure if you are in a country where they were not even officially available it look like a crime… But in its home market… It’s better than rusting unsold in the parking of a used car selling outlet… I live in a crappy harbour town, and there are few unsold for month now in different showrooms. Even 2nd hand Renaults sells faster…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315871",
"author": "strider_mt2k",
"timestamp": "2011-01-27T18:42:01",
"content": "“…Sinistar converted to a Arkanoid…”Old wounds, eh?That is an injustice, I agree.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315906",
"author": "Eirinn",
"timestamp": "2011-01-27T20:06:55",
"content": "@hoopstar if performance is the only thing that matters to you then i guess you got stuck with the ugly chick ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316026",
"author": "kanamycin",
"timestamp": "2011-01-27T22:44:56",
"content": "I know it’s rice, but this kind of rice deserves some respect imo.It’s not your run of the mill bolted-on-bodykit-that’s-still-primered and I can’t see any fart-cans.And the end result is beautiful.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316196",
"author": "Ugly American",
"timestamp": "2011-01-28T01:43:05",
"content": "Poseur.Real NSX projects are the turbos at 500HP or the 650HP twin turbo on a 2,999 pound car.If you want to see a car hack check out how easy it is to increase the turbo boost on VW, Hundai or Buick turbos.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,294.737027
|
||
https://hackaday.com/2011/01/26/make-presents-the-multimeter/
|
Make Presents: The Multimeter
|
Caleb Kraft
|
[
"Tool Hacks"
] |
[
"multimeter",
"tutorial"
] |
This video falls under the category of things we want to send people when they ask “how do I get started with electronics”, and we get asked that
a lot
. For those of you who have been working with electronics
for years
at all
, you can skip this entire video. That is, unless you really want to watch an instructional video on multimeters. In the video, which we’ve included after the break, they talk about the differences between different meters, the common uses and how to actually use the meter to get the results you need. Stuffed full of useful information, this video will get those of you who are still reading up to snuff pretty quickly. Now go use your multimeter to do some hacking!
[youtube=http://www.youtube.com/watch?v=BW3Wj7UD-_s&w=470]
| 17
| 17
|
[
{
"comment_id": "315198",
"author": "Mike",
"timestamp": "2011-01-26T23:36:01",
"content": "Just need to watch the EEV blog. Dave reviews a slew of them inPart 1, andPart 2.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315204",
"author": "Hackius",
"timestamp": "2011-01-26T23:42:19",
"content": "I’d like one of these for O-scopes. I use them intuitively but I have no clue what I’m doing from an engineering POV",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315208",
"author": "Gdogg",
"timestamp": "2011-01-26T23:46:47",
"content": "Fix the embed… Two wide to fit in the body div AND the open in youtube button/link is hidden. Smooth.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315225",
"author": "Gdogg",
"timestamp": "2011-01-27T00:11:27",
"content": "Although I learned all this stuff a long time ago, I love his videos, he makes it really easy to understand.I’m with @Hackius too. They are hard to understand at first, and a make-style video would have helped me out a lot.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315229",
"author": "anon",
"timestamp": "2011-01-27T00:17:45",
"content": "http://www.youtube.com/watch?feature=player_embedded&v=BW3Wj7UD-_s",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315231",
"author": "woutervddn",
"timestamp": "2011-01-27T00:18:48",
"content": "Hmm O-scopes are kind of hard to understand if you’ve never used them..I learned using them in school during fysics, electronics and electrics class..Neither of them showed us more than what we really needed but in total it did result in enough knowledge to understand the total package..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315293",
"author": "Casey O'Donnell",
"timestamp": "2011-01-27T01:38:40",
"content": "i saw this earlier today, wonderful. infact watch any of this guys docos.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315300",
"author": "Dino",
"timestamp": "2011-01-27T01:48:30",
"content": "Nice video Collin. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315313",
"author": "Oren Beck",
"timestamp": "2011-01-27T02:08:01",
"content": "And perhaps we can find or make a viddy about Simpson 260 or similar meters?I have a black case Amprobe analog that gets used rather often as unlike the new digital flukes etc- it’s a no battery needed meter.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315513",
"author": "Anonymous",
"timestamp": "2011-01-27T07:53:53",
"content": "I can never stand this guy or his attempts at the Agent Smith voice.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315578",
"author": "Anonymous",
"timestamp": "2011-01-27T09:15:01",
"content": "Totally agree. Can’t the guy just talk normal like the rest of the human race? Talking like Agent Smith is only cool in the movies.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315651",
"author": "Leif",
"timestamp": "2011-01-27T11:26:14",
"content": "As a n00b, thanks. Just in time. I’m getting started with a cantenna for wiki and hope to move onto an Arduino hack.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315744",
"author": "Velkro Smaak",
"timestamp": "2011-01-27T14:51:45",
"content": "This guy is a total dude. I’d have a zoot and a beer with him any day.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315749",
"author": "Samuel",
"timestamp": "2011-01-27T15:04:04",
"content": "This guy makes me want to slap him.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "317057",
"author": "chango",
"timestamp": "2011-01-28T18:55:21",
"content": "+1 for Dave Jones @ EEVblog. He’s become something of a test equipment connoisseur.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "322884",
"author": "kuo",
"timestamp": "2011-02-04T03:41:22",
"content": "thanks!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "361389",
"author": "Kandi Tehney",
"timestamp": "2011-03-17T22:05:45",
"content": "Just attests the old adage. It’s an ill wind that blows no real. – Whatever is begun in anger ends in shame. – Benjamin Franklin 1706 – 1790",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,295.106117
|
||
https://hackaday.com/2011/01/26/learn-to-code-at-lifehacker/
|
Learn To Code At Lifehacker
|
Caleb Kraft
|
[
"Software Development"
] |
[
"javascript",
"tutorial"
] |
[Adam] over at lifehacker is putting together a series on the principles of programming called
“Learn to code”
. They are using Javascript as a basis to teach the fundamentals that would allow you to get stuff done in any similar language, like actionscript. After you’ve got these basics down, even moving to an object oriented language shouldn’t be too difficult. We absolutely love educational resources and hope they continue this series pretty far. They’ve already released part one and
part two
. We have supplied the video from each after the break, but there’s more info at the links.
[youtube=http://www.youtube.com/watch?v=98ZkbFwV2ZQ&w=470]
[youtube=http://www.youtube.com/watch?v=EreUdTEvYO8&w=470]
| 26
| 24
|
[
{
"comment_id": "315133",
"author": "Orkie",
"timestamp": "2011-01-26T22:06:09",
"content": "JavaScript is object oriented?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "315140",
"author": "Caleb Kraft",
"timestamp": "2011-01-26T22:20:56",
"content": "@Orkie,No one said that. I said that after learning these basics, moving on to an OO language would be easier.",
"parent_id": "315133",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "315144",
"author": "YaBa",
"timestamp": "2011-01-26T22:22:55",
"content": "Python would be a better choice. Easy to teach, read and code.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315157",
"author": "Kyros",
"timestamp": "2011-01-26T22:34:11",
"content": "Not to be mean, but I seriously doubt anyone who reads hackaday on a regular basis needs such an introductory intro to coding. While the tutorial series is nice and perfectly fine for say, my designer friends who want to learn a bit of coding, it isn’t going to do much for anyone interested in the sorts of things hackaday posts.Also, python is a much better language to start people in for coding.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8095608",
"author": "James D Chambers",
"timestamp": "2025-02-08T15:42:27",
"content": "I just started following in hopes of just how to learn to code.",
"parent_id": "315157",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "315163",
"author": "Same",
"timestamp": "2011-01-26T22:46:02",
"content": "@Orkie,Yes, JavaScript is an Object Oriented language.IE : document.getElementById(‘id’); //You call the method ‘getElementById()’ on the ‘document’ object.You can also create objects, for example in the JSON way (JavaScript Object Notation)Peace !",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315167",
"author": "r_d",
"timestamp": "2011-01-26T22:50:42",
"content": "Leave it to Lifehacker to pick Javascript.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315169",
"author": "unforgiven",
"timestamp": "2011-01-26T22:56:17",
"content": "Not to be mean, but I read hackaday daily and know nothing about coding, so this type of thing is for me. It’s possible I am the only one, but I would wager that I am not.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315171",
"author": "Orkie",
"timestamp": "2011-01-26T22:58:00",
"content": "@CalebNo, I meant JavaScript *IS* object oriented. What it is not is class-based. Maybe I should’ve had a “But” at the start of my post.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315173",
"author": "Same",
"timestamp": "2011-01-26T23:01:05",
"content": "I don’t think a language is better than an other to learn how to code.I started with PHP/MySQL myself, then I learnt with ADA language at school and finally, in the order : C & C++, Java, .net Framework.I used to make some scripts with Python but it’s awful the way you have to keep the indentation…I’m now web programmer and I assume that the best way to code is to begin with a high level language, oriented for your purpose, if you wanna do websites, go learn PHP, if you want to create professional application, don’t mis the C and C++ for the OOP, you can taste Java too (eternal struggle).Now if you really want to learn a scripting language, I would go with Perl or Python, with a preference for Perl as it doesn’t differ of the others languages in the way of programming.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315206",
"author": "ReKlipz",
"timestamp": "2011-01-26T23:45:02",
"content": "Anyone who says JavaScript isn’t Object Oriented doesn’t know JavaScript (or any of it’s siblings).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315210",
"author": "ReKlipz",
"timestamp": "2011-01-26T23:49:19",
"content": "I too am not sure why they picked JavaScript as a starter. Due to JavaScript’s prototypical inheritance, I think a dynamically typed language like Python would have been a better choice.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315214",
"author": "TedFoolery",
"timestamp": "2011-01-26T23:58:27",
"content": "The one benefit of using javascript is that everything a newbie needs is already installed — a browser and a text editor.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315267",
"author": "strider_mt2k",
"timestamp": "2011-01-27T00:56:51",
"content": "I hold just about anything a Gawker site does as suspect, but that’s just me.I’m sure somebody over there is cool still.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315321",
"author": "brad",
"timestamp": "2011-01-27T02:32:16",
"content": "i took some classes in pascal, c++, c#, and matlab back in the day, but i wouldn’t consider myself well-versed in the world of code by any stretch of the imagination.thanks HaD for posting those. it was interesting! there are those of us who actually hang around the site while really not knowing a lot of the basics.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315338",
"author": "Pix3l the B1t",
"timestamp": "2011-01-27T03:13:11",
"content": "@SameThe indentation used in Python helps readability, and teaches the programmer to indent properly which is very useful in other languages.It’s funny, because they are teaching JavaScript without teaching HTML first :p",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315516",
"author": "J",
"timestamp": "2011-01-27T08:01:22",
"content": "@ Kyros: i read hackaday daily and know precisely dick about coding. i do however have an interest in learning, and as such really appreciate posts like this.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315541",
"author": "Necromant",
"timestamp": "2011-01-27T08:42:57",
"content": "F*ck, js! They should have used scheme/lisp, or plain C to get started. It will be painful to make a switch later…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315583",
"author": "Spork",
"timestamp": "2011-01-27T09:21:03",
"content": "As much as I hate python, I would agree that it’s a great beginner language. It’s so powerful with so little code and has tons of freely available packages/tutorials.@Aaron,While I mostly agree with your statements, I frown upon how you have delivered said information. Some parts are articulate and poignant, while others are vulgar and slathered about the page.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315586",
"author": "Aaron",
"timestamp": "2011-01-27T09:27:28",
"content": "Spork: Please feel free to choose, from the following options, the tone you prefer in my response:a) While I understand that the deeply profane manner in which I chose to express myself may strike some as not merely offputting but actively repulsive, I choose nonetheless to employ that particular style as a means of indicating the depth and breadth of the contempt with which I find myself overwhelmed in the face of such widespread and utterly unthinking disinterest in that which is, after all, only the single most fundamentally necessary capacity one must have to present any information which is not purely visual: that is, the ability to speak in such a way that one’s intended audience is not driven away by the aesthetically abhorrent experience of perceiving the particular tones in which you choose to pitch your voice.b) Oh, take your tone argument and shove it up your ass sideways, you bourgeois whiner.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315588",
"author": "Aaron",
"timestamp": "2011-01-27T09:31:10",
"content": "Oh, and expansion to a): unless I’m fool enough to imagine I really *can* empty the ocean with a bucket, why should I worry too hard about whether or not I choose to wallow in the vernacular? If people gave enough of a rat’s ass to be worried at all about how they present themselves vocally, then I wouldn’t be so fed up with it that I’m ready to shoot boiling blood from my eye sockets every time I click on a “how to” link and see that goddamned embed, now would I?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315672",
"author": "strider_mt2k",
"timestamp": "2011-01-27T12:30:41",
"content": "Peanuts, Popcorn, Chewing Gum!Buttscratchaaa!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315684",
"author": "Harry",
"timestamp": "2011-01-27T13:01:33",
"content": "1…2…3..FIGHT!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315694",
"author": "davo1111",
"timestamp": "2011-01-27T13:23:08",
"content": "im suprised they didnt use haskell/pascal. Its what most uni’s use these days when they start off computer science",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315719",
"author": "Aaron",
"timestamp": "2011-01-27T14:09:47",
"content": "Which is why there needs to be a separate, obvious path for “I want to start working in the industry” rather than “I want to spend a decade and a half becoming a Numbers God, then the rest of my career writing papers and seeking tenure”. Haskell’s great for the latter (I guess) and scares the hell out of the former, which I don’t think is such a great thing.And Pascal? Are people still *teaching* that? Didn’t it go out with punched cards and IBM vs. DEC jokes?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315909",
"author": "Justin",
"timestamp": "2011-01-27T20:16:40",
"content": "Javascript is a pretty good starter language because everyone has access to it with out having to install anything, the results are easily shareable and it can easily do very visual output with images and interacting with the screen to build little applications which is pretty rewarding.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,294.99619
|
||
https://hackaday.com/2011/01/26/stepper-directed-hdtv-antenna/
|
Stepper Directed HDTV Antenna
|
James Munns
|
[
"Radio Hacks"
] |
[
"antenna",
"broadcast",
"floppy",
"hd",
"hdtv",
"OTA",
"stepper"
] |
Broadcast TV has come a long way from adjusting the rabbit ears on top of the set just to get a fuzzy black and white picture. While nowadays there are often HD signals broadcast in most areas, it can often still be critical to redirect an antenna to get the best possible signal. By harvesting a stepper motor from an old 5 1/2″ floppy drive, and using a PC’s parallel port to control it, this adjustment can be
handled automatically
.
Broadcast tower locations
are easily found online, and once you have calibrated your stepper to face North, you are on your way to free HDTV reception.
What we would like to see is this antenna attached to a HTPC, and some kind of script to automatically direct the antenna for the best possible signal for the current channel. If anyone out there makes this happen, be sure to
let us know
.
| 22
| 22
|
[
{
"comment_id": "315096",
"author": "M",
"timestamp": "2011-01-26T21:16:19",
"content": "I have one of those “smart antennas” that uses the CEA-909 standard, but it was a piece of garbage. It would be nice to have finer granularity than 16 possible orientations.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315102",
"author": "Colecago",
"timestamp": "2011-01-26T21:24:44",
"content": "I think it might be more useful to harvest the RSSI info from the channel to fine tune as the most direct path may not be the strongest, depending on buildings and whatnot.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315103",
"author": "fartface",
"timestamp": "2011-01-26T21:26:31",
"content": "Get a real antenna. if a floppy drive can turn it’ then it’s junk.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315108",
"author": "Peter",
"timestamp": "2011-01-26T21:34:06",
"content": "The display in the picture looks suspiciously like an old Commodore 64 monitor. Those things can’t do HD. They can barely manage PAL.Also, thumbs-down for [click to next page] yet another [click to next page] Instructables article with [click to next page] scant information.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315118",
"author": "p0rkjello",
"timestamp": "2011-01-26T21:41:12",
"content": "Is that a Commodore 64 monitor in the photo?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315119",
"author": "81rdm4n",
"timestamp": "2011-01-26T21:41:15",
"content": "Don’t believe that ‘HD Antenna” stuff… Any TV antenna that can receive VHF and/or UHF can receive HD signals!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315126",
"author": "HARaaM",
"timestamp": "2011-01-26T21:55:42",
"content": "I need to turn a 4 foot dish, and point to anywhere in 1 degree increments. Any ideas?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315141",
"author": "rochmndx",
"timestamp": "2011-01-26T22:21:32",
"content": "Get a real antenna and a rotor.A DIY Gray-Hooverman UHF design (I have a 30″ x 75″ screened, dual bay design), antenna rotor and preamp will solve any reception problem.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315452",
"author": "anonymous",
"timestamp": "2011-01-27T05:57:51",
"content": "Although a PC is generally overkill (obviously).. I suppose if an old PC with printer port happens to be there, not too shabby. We don’t see a lot of poeple using their PC serial or parallel ports (since they are dying out) and most people use an arduino now..Now port the code and cable over to the C64, and use an IR blaster to control it. :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315500",
"author": "computothought",
"timestamp": "2011-01-27T07:31:22",
"content": "I had to look twice. Wow, it made hackaday! Thank you Hackaday! Honored, humbled, and unexpected, The project as shown is unfinished. My camera died and the end of the project or you would have seen a bit more. Version 2 is coming after some time off for a while. I have already made the scripts. I gave people just enough to experiment on their own. The add-on was intended for a computer based dvr i.e. Mythtv so, I do not fee it is overkill. Certainly with a micro-controller you could do some awesome things too.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315503",
"author": "computothought",
"timestamp": "2011-01-27T07:34:23",
"content": "By the way, that is an old Commodore monitor that is hooked to the s-video port from the Mythtv box Linux rocks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315546",
"author": "zeropointmodule",
"timestamp": "2011-01-27T08:44:01",
"content": "i have a few old steam driven (pre P2) laptops :-)Only problem is that the equally steam driven <6GB IDE HDDs are made of unobtainium.Ideas?(yes i know you can buy CF-IDE adaptors but most cheap CF cards do not boot!!!)Its bad enough now that when I see an old clunker which is headed to the trash I rip out the hard disk and zerofill it just so it can be recycled.Little tip, some old laser printers and photocopiers used 2.5\" drives so sometimes you can scavenge them and then nuke the drive(s) from orbit.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315648",
"author": "ferdie",
"timestamp": "2011-01-27T11:17:40",
"content": "here in holland ned we dont have that systeem we usedbv over the air setupbox and antene you get for free you can pik it up to your local store you only go pay when you put in the smartcard",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315797",
"author": "Polaczek",
"timestamp": "2011-01-27T16:40:27",
"content": "What would you guys recommend as a good HD antenna? I don’t live in the boonies so no need for crazy amplification.I am able to pick up our two local HD channels with just a stripped coax cable, but I was wondering how to better the analog channels.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315830",
"author": "asheets",
"timestamp": "2011-01-27T17:26:59",
"content": "@Polaczek — Two words (names, actually): “Yagi-Uda”. I live in the boonies outside of Denver, and I get a bunch of digital stations, including a bunch 180 degrees opposite from the director elements.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315831",
"author": "asheets",
"timestamp": "2011-01-27T17:28:59",
"content": "@zeropointmodule — I use drives pulled from ancient DirecTV set-top boxes. I can always find them at the Habitat for Humanity Thrift Store locally.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315901",
"author": "computothought",
"timestamp": "2011-01-27T19:56:37",
"content": "The antenna I use:http://www.instructables.com/id/Yet-another-dtv-antenna/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315990",
"author": "IsotopeJ",
"timestamp": "2011-01-27T21:59:41",
"content": "Here’s a good article about using that chip:http://www.parallax.com/dl/docs/cols/nv/vol1/col/nv6.pdfI didn’t realize you could drive a stepper directly from one (it has built-in diodes to handle back-voltage from the inductive load)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "317395",
"author": "Ben",
"timestamp": "2011-01-29T02:20:01",
"content": "Funny. I just made the UI for this project yesterday. I did it to learn how to use html5 Server Sent Events and SVG.just click on the on the direction to point the antenna and watch it spin to that position.It’s not connected to an actual antenna right now so feel free to play with it (until i take it down)http://wisehaus.webhop.net/antaimer.xmlworks in safari and chrome.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "323891",
"author": "James",
"timestamp": "2011-02-05T00:02:43",
"content": "I’ve always been a skeptic about paying for HD. I was finally able to dump my OTA antenna once my employer, DISH Network, launched the HD Free for Life promotion. No more eye sores behind my TV!! Definitely check out it out at Dishnetwork.com.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "324768",
"author": "computothought",
"timestamp": "2011-02-06T00:19:57",
"content": "Stepper motors in the proper hands can be a lot more accurate than people are led to believe otherwise. I do agree that using some kind of antenna where the signal can be evaluated could be better. but then all you have to do it once and update your data file so next time there is no issue. I am working on a chip combination to let a usb-parallel cable do signal control. In any case, there are enough usb adapters for doing what the parallel/serial port do, extinction of those ports will not hurt. Connecting to the pc or the micro-controller is basically the same. If you are using a pc as the dvr, then using a micro-controller is redundant. The HD free promotion is just a gag. Since everything will be hd anyway. Why would you start paying for cable or dish for what you are getting for free now???????????Someone is trying to sell ice cubes to eskimos.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "324776",
"author": "computothought",
"timestamp": "2011-02-06T00:35:08",
"content": "Yes that is a Commodore Monitor. Still works after all these years. (Hope I do not jinx it.) A s-video cable works perfectly with the rear input of the monitor (chroma/luma split?), I have a large screen analog tv. s-video > composite > vcr (as a modulator> TV could be an interesting combination. Make it last!!! We ignore the industry that says we should chunk that old stuff.Could become part of a crude oscilloscope in a worst case scenario,",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,294.929694
|
||
https://hackaday.com/2011/01/26/making-the-im-me-dongle-more-useful/
|
Making The IM-ME Dongle More Useful
|
Mike Szczys
|
[
"Microcontrollers",
"Radio Hacks"
] |
[
"im-me",
"pinkos",
"sil"
] |
So you’ve hacked your IM-ME six ways from Sunday but don’t know what to do with the USB dongle? [Joby Taffey] set out to
make this leftover a useful part of the hacking arsenal
. He pulled off the USB connector and the USB controller chip. From there he glued on the pin headers as pictured above in order to turn this into a breadboard-friendly single in-line package. But wait, that’s not all… for the low-low price of common components he also built a power and programming cable. Once it’s all said and done you can load
PinkOS
, an operating system he developed for the device which lets you operate the onboard radio via serial protocol.
Need a better overview of the hardware on the board? [Joby] laid
the groundwork for this hack
back in October.
| 15
| 15
|
[
{
"comment_id": "315054",
"author": "GCL",
"timestamp": "2011-01-26T20:15:20",
"content": "And currently Joby’s site linked there isn’t at home. It gives me an error message regarding the database. It might be overloaded with requests at the moment.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315058",
"author": "wvdv2002",
"timestamp": "2011-01-26T20:26:15",
"content": "I don’t understand it. Why did they add another microcontroller to the dongle. That CC1110 radio chip has a bigger brother (the CC1111) which has a fully functional USB transceiver as well…. Cool chip by the way.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315063",
"author": "GCL",
"timestamp": "2011-01-26T20:34:15",
"content": "wvd2002:Because no one at the company was aware of the big brother to the ChipCon/TI part number you’ve cited there.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315064",
"author": "GCL",
"timestamp": "2011-01-26T20:36:23",
"content": "Site is back online by the way.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315073",
"author": "Paul Potter",
"timestamp": "2011-01-26T20:45:52",
"content": "Interesting stuff. I will be getting few of these for both normal and other uses.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315081",
"author": "Rob Wentworth",
"timestamp": "2011-01-26T20:54:38",
"content": "The page is down for me. Also, it is not yet in the google cache, or in coral cache (nyud.net), or at the wayback machine (archive.org).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315085",
"author": "GCL",
"timestamp": "2011-01-26T21:00:49",
"content": "@Rob:Indeed. Same problem as before. As for why? Perhaps his database program doesn’t scale properly under these hits?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315091",
"author": "Joby Taffey",
"timestamp": "2011-01-26T21:10:35",
"content": "@Rob Yes. My little rented VPS doesn’t handle being hackaday’d very well.Here’s a coral cache link:http://blog.hodgepig.org.nyud.net/2011/01/20/im-me-dongle-walkthrough/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315092",
"author": "Rob Wentworth",
"timestamp": "2011-01-26T21:10:37",
"content": "At least there are google caches for the older pages.PinkOS:http://webcache.googleusercontent.com/search?q=cache:nnfUf4UgOygJ:blog.hodgepig.org/2010/11/30/pinkos/+http://blog.hodgepig.org/2011/01/20/im-me-dongle-walkthrough/&cd=5&hl=en&ct=clnk&gl=usIM-Me Dongle UART:http://webcache.googleusercontent.com/search?q=cache:GlJG1E6e00IJ:blog.hodgepig.org/2010/11/23/im-me-dongle-uart/+http://blog.hodgepig.org/2011/01/20/im-me-dongle-walkthrough/&cd=2&hl=en&ct=clnk&gl=usI am looking forward to reading the newer pages. My ebay IM-me arrived last week. ;-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315095",
"author": "Rob Wentworth",
"timestamp": "2011-01-26T21:15:24",
"content": "@Joby as I mentioned previously, the coral cache link does not work for me. After you sent the link I tried again. It still does not work. If you flush your browser cache and try again you may what I see:—–This webpage is not available.The webpage athttp://blog.hodgepig.org.nyud.net:8080/2011/01/20/im-me-dongle-walkthrough/might be temporarily down or it may have moved permanently to a new web address.—–Oh, I see that you may not have seen my previous message which is “awaiting moderation”. Apparently it was not moderate enough… ;-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315109",
"author": "Rob Wentworth",
"timestamp": "2011-01-26T21:34:25",
"content": "It seems that hackaday only allows a single URL in a comment, or it goes into “Your comment is awaiting moderation” status.One useful thing I learned is that when posting a link to a youtube page, you can prevent it getting chopped off at the right by appending &w=470 to the URL, like this:http://www.youtube.com/watch?v=vTN5IvzZOT8&w=470",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315115",
"author": "GCL",
"timestamp": "2011-01-26T21:37:00",
"content": "@all:Carefully!!Carefully! We must be as careful as the dwarves were with Mr. B. Baggins’s plates as with the contents of that site.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315120",
"author": "Rob Wentworth",
"timestamp": "2011-01-26T21:41:35",
"content": "Yay! The site is up again! For now… ;-)Back when my hackaday SD Floppy page went viral, my ISP dropped me for too much bandwidth consumption (literally thousands of hits per day, with hundreds of links to my uanr.com/sdfloppy page from all over the world, and it took days for my domain name to propagate to my IP address at the new ISP.I hope you do not lose your ISP for this, Joby. :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315121",
"author": "GCL",
"timestamp": "2011-01-26T21:45:22",
"content": "@RobNow I recognize you. And oh my aching field density equalizers! I thought I recognized you when you posted the earlier one. I’ve studied that page to the point where I nearly tracked down the appropriate router just to add that style of external storage to it. (Plus the dual serial ports.) But naturally I never did.That’s an interesting project you’ve got there, Rob, nice one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315298",
"author": "pelrun",
"timestamp": "2011-01-27T01:47:35",
"content": "@wvdv2002There’s all sorts of reasons for choosing multiple chips over a single integrated solution – price, part availability, previous experience with a chip (which reduces development time and cost) etc etc.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,294.786368
|
||
https://hackaday.com/2011/01/26/robot-hand-has-no-problem-giving-you-the-finger/
|
Robot Hand Has No Problem Giving You The Finger
|
Mike Szczys
|
[
"Robots Hacks"
] |
[
"arm",
"doom",
"hand",
"skynet",
"tendon"
] |
Get your Terminator clichés ready,
this robot hand
reeks of Skynet. It is designed to function like the human hand, but the main goal is one of robustness. A lot of effort went into making sure this won’t break in the field. Instead of rigid gears, a system of tendons actuates each digit. The pulleys that control these are located in the forearm and each has a spring mechanism that helps to cushion shocks to the apparatus which might damage other grippers. It has bone-crushing power behind the 19 degrees of movement and, as you’ve already guessed, this comes at a pretty steep price tag; topping out around 100,000 Euros. It’s more complicated, and more expensive that
jamming grippers
, but it’s also far scarier. See for yourself in the silent movie after the break.
[youtube=http://www.youtube.com/watch?v=YqmRKqFqiok&w=470]
[Thanks Erico]
| 25
| 25
|
[
{
"comment_id": "315018",
"author": "Osgeld",
"timestamp": "2011-01-26T19:17:01",
"content": "classy",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315025",
"author": "kobilica",
"timestamp": "2011-01-26T19:32:18",
"content": "i expected crushing some bones :(but hell nice hand, i want two.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315026",
"author": "dmcbeing",
"timestamp": "2011-01-26T19:32:31",
"content": "Hmm, so the steel press wont work this time :S",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315032",
"author": "dbear",
"timestamp": "2011-01-26T19:45:36",
"content": "two by two hands of blue",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315033",
"author": "robomonkey",
"timestamp": "2011-01-26T19:45:53",
"content": "it’s like when Bob Morton shook Robocop’s hand",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315099",
"author": "Taylor Alexander",
"timestamp": "2011-01-26T21:19:26",
"content": "Pfft, I built a hand way more complex than that when I was a fetus.Disclaimer: Its my hand.-Taylor",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315111",
"author": "bty",
"timestamp": "2011-01-26T21:34:49",
"content": "it seems the budget, rather than the tech was the obstacle in having to wait so long for this development.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315125",
"author": "X",
"timestamp": "2011-01-26T21:52:01",
"content": "It’s beautiful. Also, I know that computers and robots could be much more advanced these days if price was not a limiting factor in R&D.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315131",
"author": "whoolie",
"timestamp": "2011-01-26T22:03:40",
"content": "I don’t see any reason the cost of the mechanics couldn’t be reduced to the $500-$1000 range. Particularly if it was redesigned to be made from injection molded parts and stamped sheet metal.The question is: how much of the sticker price is overkill materials like titanium, how much is small economy of scale fabrication cost, and how much are the control electronics?The control electronics have some precision sensors per actuator, and there’s a lot of actuators. The motors themselves could be reduced in cost I’m sure.I’m tempted to build one made out of fishing line and corona servos and see how cheap I can go.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315137",
"author": "Dan",
"timestamp": "2011-01-26T22:10:47",
"content": "I thinking of getting metal hands. It is a risky operation, but it will be worth it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315237",
"author": "woutervddn",
"timestamp": "2011-01-27T00:27:21",
"content": "who needs metal hands if you have mind control!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315244",
"author": "Tron",
"timestamp": "2011-01-27T00:34:28",
"content": "It’s the hand made by the DLR (German Aerospace Center). I have seen it with my own eyes…it’s amazing!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315480",
"author": "pRoFlT",
"timestamp": "2011-01-27T06:48:48",
"content": "Do we really need robots with 4 fingers and a thumb? wouldn’t 2 fingers and a thumb be enough? who really uses there ring and pinky fingers anyways. Its not like these robotos are playing the piano or musical instrument.There should be a law where you cant make human looking robots! How will we tell them apart on Judgment Day!!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315496",
"author": "caleb",
"timestamp": "2011-01-27T07:20:13",
"content": "@ pRoFITyou dont, just kill everyone/thing",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315565",
"author": "zeropointmodule",
"timestamp": "2011-01-27T08:58:21",
"content": "A challenge, make a robot hand using discarded printer parts.Bonus if it uses the printer’s existing metalwork too.:-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315566",
"author": "Scupham",
"timestamp": "2011-01-27T09:00:15",
"content": "Is there a reason hand developers don’t use the same engineering of our hands?For example hold your hand up in front of your palm forward and straighten your fingers, now keep your fingers straight and pull the middle finger down to your palm. The rest of the fingers move, I think this is due to how the muscles are attached to the fingers.Just a quick thought but do these mechanisms / flaws in how we move our fingers actually help us to grip more efficiently etc",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315647",
"author": "Necromant",
"timestamp": "2011-01-27T11:03:59",
"content": "want that!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316469",
"author": "Refracted_Ahav",
"timestamp": "2011-01-28T05:33:01",
"content": "@ Scupham : will I will agree with you that that would probably work in most applications I don’t think that we have the ability to create mechanical “muscles” and “tendons” that can be retrained for finer control as human hands can over time.It all depends on what you need your robot to do.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316483",
"author": "Refracted_Ahav",
"timestamp": "2011-01-28T05:52:38",
"content": "@ caleb & pRoFIT: There’s more to a human being than biological machinery. Unless Robots some how inherit both souls and spirits I think there wouldn’t be be an issue. However if God decided to play a joke on us and actually grant these things to machines, it would interesting to see how a smartphone and a netbook would carry out a debate on the meaning of life, the universe or the merits or demerits of the open source movement. Could you imagine what that would do to a robots psyche to hear two individuales carry on as to wither the next generation of Droids should be windows or linux based? Or the thought that their mind could be wiped and replaced at any given time? I’m glad the tech to treat brains like hard drives hasn’t been realized yet. I wouldn’t trust anyone with that kinda power.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "319227",
"author": "kshade",
"timestamp": "2011-01-31T00:06:52",
"content": "@Refracted_Ahav nice trolling!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "320297",
"author": "Malikaii",
"timestamp": "2011-02-01T11:23:46",
"content": "Now I want to see it pop and lock, and do the robot.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "320998",
"author": "Refracted_Ahav",
"timestamp": "2011-02-02T06:53:44",
"content": "@ Kshade sorry, I just get a little carried away some times.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "358115",
"author": "IJ Dee-Vo",
"timestamp": "2011-03-14T17:57:01",
"content": "@kobilica=Left and right?@pRoFlT=two fingers and a thumb should give you 90precent of what human hands can do. if you want all you need 5, or for prothesis, or androids to replace humans",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "395671",
"author": "IJ Dee-Vo",
"timestamp": "2011-05-18T16:42:17",
"content": "@ pRoFlTI use mine all the time.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "396182",
"author": "Rob in Belfast",
"timestamp": "2011-05-19T22:15:01",
"content": "@ pRoFITMake them not able to bleed, don’t give them a pulse and ensure their pinky finger is a bit weird looking, bent and mutated – no wait, those are the aliens David Vincent tried to warn us about…Build them like Walter the Wobot and they can make do with three, sorry, thwee fingers.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,295.05649
|
||
https://hackaday.com/2011/01/26/edison-clock-uses-ammeter-plus-bulbs-to-set-alarm/
|
Edison Clock Uses Ammeter Plus Bulbs To Set Alarm
|
Mike Szczys
|
[
"clock hacks"
] |
[
"alarm",
"edison",
"light bulb",
"meter"
] |
This is the Edison clock
, designed by [David Krawczyk]. It shows time in the same way as the multimeter clock, regulating power to two analog needle meters. The feature that makes this one a bit different is the alarm. You can see the series of holes on the front of the base. These have a small light bulb socked in each, and correspond to hours and 5-minute increments. Insert two bulbs to set the alarm time, and make sure that the alarm knob points to ‘on’. As you can see above, the alarm has been set to 8:15. Hidden on the last image of the article above is
a PDF with just a bit more explanation
. Still, much has been left out so if you replicate this clock we want to hear about it.
[via
Gizmodo
and
Walyou
]
| 8
| 8
|
[
{
"comment_id": "315002",
"author": "Joe",
"timestamp": "2011-01-26T18:22:43",
"content": "Nice work. Now if only the bulbs were completely sealed, that would be bada$$.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315015",
"author": "Buddy",
"timestamp": "2011-01-26T19:08:41",
"content": "I’d remove the alarm on/off switch and just use the bulbs as the trigger. Not sure if there is an alarm sound to go with it but could use the fact that the circuit is closed and there is current going through it to drive a buzz relay connected to a speaker. Also, Edison was DC only!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315021",
"author": "biozz",
"timestamp": "2011-01-26T19:22:16",
"content": "screw edition he was a jurk XD Nikola Tesla contributed SOOO much more to science at the same time!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315022",
"author": "dan fruzzetti",
"timestamp": "2011-01-26T19:22:57",
"content": "I wish I could get up at 8:15 :/ that’s like, sleeping in for HOURS in my house.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315029",
"author": "fartface",
"timestamp": "2011-01-26T19:39:35",
"content": "Id rather see a Tesla Clock…Time displayed by a set of jacobs ladders and the alarm is a tesla coil lighting off loud sparks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315031",
"author": "tooth",
"timestamp": "2011-01-26T19:45:02",
"content": "That is sweet!! I would love one of them. But i am stuck with the worlds first alarms that was made in the beginning of time. A wife.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315444",
"author": "Bryan",
"timestamp": "2011-01-27T05:44:56",
"content": "I wish there was some diagrams or ways to build thisi’d love to tackle it",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315567",
"author": "zeropointmodule",
"timestamp": "2011-01-27T09:00:16",
"content": "Tesla clock would be cool.BTW Edison hired Tesla wayback when, he left because of a stupid decision by Edison not to pay out the money for redesigning a motor that he agreed to.IMHO that was the worst decision in history on Edison’s part, the money would have been pocket change.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,294.652666
|
||
https://hackaday.com/2011/01/26/reverse-engineering-radio-controlled-outlets/
|
Reverse Engineering Radio Controlled Outlets
|
Mike Szczys
|
[
"home hacks"
] |
[
"atmega8",
"home automation",
"outlet",
"remote control",
"RF"
] |
[Chr] picked up a pack of
remote control outlets in order to reverse engineer them
and build control into his own projects. These can be plugged into outlets around your house and a relay inside each module will switch whatever device is plugged into it after receiving a command from the remote. Once he cracked open the control housing it was easy to find the data line for the RF module which was on its own board. He used a logic analyzer to capture data from various button presses and then spent some time deciphering the communication protocol. He used what he learned to roll the module and code into an interface box where an ATmega8 connects via USB and passes commands from a computer to the RF board. Now he’s added home automation via a computer quite inexpensively. After the break you can watch a clip of the outlets switched using a smartphone.
So why not just patch into the buttons on the remote? Well, this same project was attempted
at our local hackerspace earlier this month
and the buttons don’t just pull a pin to ground. They use tri-state logic and are arranged into a matrix that is a lot harder to mimic (if not impossible) with a microcontroller. Analyzing the communications going into the RF module is definitely the less labor-intensive of the two approaches.
[youtube=http://www.youtube.com/watch?v=_Nn7xAD_cVE&w=470]
| 31
| 30
|
[
{
"comment_id": "314950",
"author": "Louie",
"timestamp": "2011-01-26T17:09:58",
"content": "There’s a company that reverses these for their 3rd party usb-controller, and they release their code. check outhttp://www.telldus.se/(I’m just a user, not affiliated with the company in any way)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314954",
"author": "ralfm",
"timestamp": "2011-01-26T17:11:08",
"content": "regarding patching into the buttons: what about using solid state relais?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314964",
"author": "NsN",
"timestamp": "2011-01-26T17:24:36",
"content": "I did something similiar for my home automation setup. One main difference as far as i can see: I use an arduino with an ethernetshield as the main controller, so no computer is necessary. I can interface with the system over usb, ethernet, IR or 868 mhz FSK radio.A few reference:Jee labs:http://talk.jeelabs.net/Particularly this post:http://talk.jeelabs.net/topic/407Some german info about the protocol (The pictures might be enough otherwise i will gladly translate)http://avr.börke.de/Funksteckdosen.htmhttp://avr.börke.de/ARCTECHsteckdosen.htmhttp://thomaskropf.at/index.php?option=com_content&task=view&id=19&Itemid=28Bye,NsN",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314970",
"author": "YaBa",
"timestamp": "2011-01-26T17:32:42",
"content": "JeeLabs has one solution to these outlets too.It’s an Arduino with RFM module and software to encode in different protocols.Check it out, JeeNode is very nice.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314971",
"author": "Rob Wentworth",
"timestamp": "2011-01-26T17:33:44",
"content": "http://www.youtube.com/watch?v=_Nn7xAD_cVE&w=470",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314972",
"author": "YaBa",
"timestamp": "2011-01-26T17:33:46",
"content": "BTW:http://daid.mine.nu/instructabliss/?url=http://www.instructables.com/id/USB-controlled-home-automation-hack/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314976",
"author": "Rob Wentworth",
"timestamp": "2011-01-26T17:38:44",
"content": "Instructabliss reports a login failure.It looks like the instrucabliss site either requires its own login, or its proxy login to instructables.com has been suspended.Is instructables.com getting greedy AND snarky?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314977",
"author": "JC",
"timestamp": "2011-01-26T17:40:35",
"content": "Very cool! It’s always a pain when things aren’t just a simple 0 or 1.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314998",
"author": "NsN",
"timestamp": "2011-01-26T18:19:52",
"content": "ralfm:It even works with a multiplexer, with that you can switch between floating and either Vin or GND.But basically this is a waste of ports and a pain in the butt (because of resistance, soldering, etc), especially if you need radio communication anyways.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315001",
"author": "Karl",
"timestamp": "2011-01-26T18:20:55",
"content": "use opto-isolators across the button contacts – just verify the relative +/- polarity, and connect the opto-isolators accordingly.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315011",
"author": "Michiel Spithoven",
"timestamp": "2011-01-26T18:49:18",
"content": "Nice, but why not just jumper the original buttons with a PIC? :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315019",
"author": "marshall",
"timestamp": "2011-01-26T19:19:03",
"content": "Yep – we made something like that a few months before – 12 Channels, IPhone Interface and disco mode ;) – based on a velleman k8055, a few relais, transistors and tons of isolation tape ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315020",
"author": "marshall",
"timestamp": "2011-01-26T19:19:39",
"content": "And Perl … perl is a weapon",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315023",
"author": "dan fruzzetti",
"timestamp": "2011-01-26T19:24:41",
"content": "Quite inexpensively? It’s cool that he used a bunch of his time to learn this, so there’s good return (knowledge) on capital investment (time == money); however, you can do this with a $20 X10 kit that probably costs less working time to buy than the time spent hacking this system.So, while I give him credit for being awesome, one day when he has kids he’ll be like “man, there’s got to be a solution I can just buy.”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315052",
"author": "foo",
"timestamp": "2011-01-26T20:13:19",
"content": "These have been reverse engineered before:http://translate.google.de/translate?hl=en&sl=de&u=http://www.das-labor.org/wiki/Funkfernbedienung&ei=0nFATYbSGYOGswaKkfHUBA&sa=X&oi=translate&ct=result&resnum=1&ved=0CB0Q7gEwAA&prev=/search%3Fq%3Dhttp://www.das-labor.org/wiki/Funkfernbedienung%26hl%3Den%26sa%3DG%26prmd%3DivnsI even have something like this running for years now. I always wondered if I could just build a very high powered sender, direct it to some big building and cycle through all the available codes…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315093",
"author": "h3po",
"timestamp": "2011-01-26T21:10:57",
"content": "@foo: nope, the ones used at “das labor” are different models with a completely different protocol. the model chr used is a pretty good choice if you’re in germany, as they appear at local stores every few months for only 15€ a kit.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315113",
"author": "one2one.121",
"timestamp": "2011-01-26T21:36:13",
"content": "I did a similar setup before, using arduinos:http://linux-utils.blogspot.com/2011/01/arduino-remote-control-outlet.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315129",
"author": "echodelta",
"timestamp": "2011-01-26T21:59:43",
"content": "X 10 is slaughtered by noise. The most useless thing I ever owned. It couldn’t turn a light on in the same outlet, reliably.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315136",
"author": "James Glanville",
"timestamp": "2011-01-26T22:10:35",
"content": "Looks good, but surely if it’s a tri-state matrix you could just the fact that avrs can do high/low/high impedance?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315160",
"author": "Whatnot",
"timestamp": "2011-01-26T22:40:55",
"content": "That you can’t hack the buttons is rubbish, so you can’t pull them to ground? then you simply use an electronic switch to tie the pins, don’t tell me that’s so impossible, $0.80 part will do it.This was nicely done though and is more ‘classy’, but to say the other method can’t be done or is so hard is just silly surely.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315234",
"author": "uky",
"timestamp": "2011-01-27T00:23:26",
"content": "I recently bought $6 chinese infrared controlled outlet which performed suprisingly well. The outlet programs to any existing remote control easily. It is definitely an alternative method worth looking into. It certainly isn’t as functional as a radio controlled one, but for the price it can work very well for some setups.http://cgi.ebay.com/IR-Infrared-Remote-Control-Power-US-Outlet-Switch-Plug-/350430278200?pt=LH_DefaultDomain_0&hash=item519745b238",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315262",
"author": "Erik Johansson",
"timestamp": "2011-01-27T00:50:27",
"content": "Does anyone know how much overhead in power usage these things give? Is it constant ~9W or is it dependent on how much the appliance that is pluged in draws.?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315600",
"author": "Cyk",
"timestamp": "2011-01-27T09:43:32",
"content": "There’s an interesting project called “Ethersex”.It’s a universal firmware for ATMega’s, thatroutes tcp and udp over FSK RF modules, ethernet,USB, CAN, RS485, etc.It also supports sending ASK codes using a RFM12RF module, so you can use it to switch radio controlled outlets.It’s easy to build a USB to RF stick, or an Ethernetto RF gateway, without writing a single line of code.Unfortunately, the website is in german, but the build environment is english.http://www.ethersex.de",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315618",
"author": "Figgesoft",
"timestamp": "2011-01-27T09:56:00",
"content": "This looks same as tellstick(usb-stick based of a ftdi-chip, pic cpu and rf-chip).The only problem I found was the latency (seems that the codes are sent >2 times at 9600bps which gives latency at the receiver, the driver is however ‘open source’ ^^,http://www.telldus.se/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315692",
"author": "James",
"timestamp": "2011-01-27T13:18:59",
"content": "and there is one more…https://sites.google.com/site/projectjanet/image-gallery",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "318011",
"author": "Owen",
"timestamp": "2011-01-29T16:38:24",
"content": "The button patch hack can be done on those remotes quite easily. I did it a couple of years ago on my set of RF plugs (exactly like the ones pictured, but UK plugs/sockets).A quick scan across the keypad with a multimeter gave me the matrix layout, then I installed a pin header soldered to the required connections, then stuck it down using hot glue and cut a small square in the remote access it easily but keep it functioning normally when not in use.Then I made an interface board using two cheap HEF4051 8-channel multiplexers to simulate the key presses. The whole hack was quite quick to do.I can document it with pictures/schematics if anyone’s interested.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "319577",
"author": "Gerjan",
"timestamp": "2011-01-31T15:14:50",
"content": "I already have a setup like this at home. Granted, I didn’t do the hard work myself. Below is a link that explains how to control these sockets with an Arduino and a 433Mhz transmitter. Sample code included. It’s all in Dutch, though…http://gathering.tweakers.net/forum/list_messages/1268154/0",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "480861",
"author": "danielle",
"timestamp": "2011-10-15T21:39:30",
"content": "i have a dozen philips remote controlled outlets that i want to change to channel F…so one remote works for all of them. is this easy? how’s it done?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "547342",
"author": "Aybek",
"timestamp": "2011-12-30T13:04:10",
"content": "I am very new to this but what i am trying to acomplish is to control my ir and rf devices ( power sockets and light switches) with my galaxy tab 10.1 via direct blutooth or wifi connection without using a computer or any other device.Basicly what i want is that a device that can revieve my commands over bluetooth or wifi and send them via rf and ir ( according to what device is). i want to control eveyrthing that can be remote controlled by my tablet.According to what i gather and learn it is possible to crate a ir and rf controller to be able to used by smartpohe or comuter. The part that i dont understand is how to remove computer and internet from this build. I would love it if u could help me or send me in the right direcion…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "582762",
"author": "bob23",
"timestamp": "2012-02-15T11:50:51",
"content": "Handy library for remote controlled outlets:http://code.google.com/p/rc-switch/",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "729235",
"author": "Terry",
"timestamp": "2012-08-09T23:18:55",
"content": "I can’t wait to integrate the “electric imp” with remote controlled sockets, either by hacking the physical remote or transmitter and protocol emulation.It will be possible to order an imp compatible arduino shield. The code is ready, we’re just waiting for the hardware!!",
"parent_id": "582762",
"depth": 2,
"replies": []
}
]
}
] | 1,760,377,295.22988
|
||
https://hackaday.com/2011/01/26/12-led-display-keeps-your-office-informed/
|
12 Foot LED Display Keeps Your Office Informed
|
Mike Szczys
|
[
"LED Hacks"
] |
[
"595",
"darlington array",
"marquee",
"shift register",
"uln2803a"
] |
Don’t reach for a sticky note when you need to leave a message for your office mates, write it down on
a 12 foot LED marquee
. [Kitesurfer1404] built this for his home office, but we’re sure he’ll find fun stuff to use it for. The display has 512 LEDs driven by plain old 595 shift registers for the high-side columns, with an ULN2803A Darlington Array to pull the eight rows to ground. The whole thing is controlled by an ATmega8 via a serial connection. Our compliments to the builder for accurately drilling a grid of 64×8 holes in each hardboard panel of the display. The buses for each row and column also look nice and clean. For the final look a 79% light transmittance frosted acrylic panel was added to diffuse the light.
We used the same method to build
our LED pumpkin
. Transistors ran the low side, and if we had needed more columns, shift registers are a popular go-to for I/O expansion. Check out that project to learn more about display multiplexing.
| 20
| 19
|
[
{
"comment_id": "314923",
"author": "Jamie",
"timestamp": "2011-01-26T16:08:49",
"content": "Bad Ass!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314925",
"author": "Satiagraha",
"timestamp": "2011-01-26T16:10:42",
"content": "foot",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314929",
"author": "elektrophreak",
"timestamp": "2011-01-26T16:18:37",
"content": "12 LED display? :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314930",
"author": "kitesurfer1404",
"timestamp": "2011-01-26T16:19:57",
"content": "I added two videos on youtube. Enjoy!http://www.youtube.com/watch?v=rfDvs2wmHQEhttp://www.youtube.com/watch?v=4prCptKpl8E",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314936",
"author": "fartface",
"timestamp": "2011-01-26T16:43:07",
"content": "He “drilled” it accurately because it’s fricking pegboard. he bought it “drilled”….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314939",
"author": "knetcomp",
"timestamp": "2011-01-26T16:45:06",
"content": "You need to fix the title. 12 leds in a display is nothing special.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "314997",
"author": "Caleb Kraft",
"timestamp": "2011-01-26T18:16:37",
"content": "title fixed, thanks all.",
"parent_id": "314939",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "314945",
"author": "daenris",
"timestamp": "2011-01-26T17:01:59",
"content": "@fartface if you read the page he specifically says he drilled the holes. It’s not pegboard.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314961",
"author": "Jordan",
"timestamp": "2011-01-26T17:20:03",
"content": "@knetcomp ikr? I though the same thing. 2×6 isn’t useful really, and if you’re really good you might come up with a 3×4 alphabet…lol",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314990",
"author": "James",
"timestamp": "2011-01-26T18:05:03",
"content": "Now if this were in a normal office, it should be used to sniff external traffic to sites like twitter and facebook and display your slacking to all your colleagues :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314991",
"author": "alan",
"timestamp": "2011-01-26T18:06:35",
"content": "@kitesurfer1404if you could take the time to provide a very brief circuit diagram of each of the parts that would be amazing. I know somewhat about electronics but not enough to start this big yet.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314993",
"author": "Squirrel",
"timestamp": "2011-01-26T18:11:18",
"content": "@alan look at any LED matrix display. They are all about the same… this is just physically large",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315004",
"author": "alan",
"timestamp": "2011-01-26T18:25:20",
"content": "@anyone who knows…would a MAX7219 be better for huge matrixes than using a shift register? or do you still have to use a shift register if you use a MAX7219",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315041",
"author": "Andrew",
"timestamp": "2011-01-26T20:01:21",
"content": "@alanI’m using a max7219 for my large displays (2ft x 3ft per panel, 5×7 pixels). It works great for the first panel, and I don’t have to use a shift register at all (the max 7219 is partially a shift register). However I’m having trouble with signal degradation over the distances from the first panel to the second, which is only about 1m. The third panel doesn’t really work at all.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315106",
"author": "alan",
"timestamp": "2011-01-26T21:32:33",
"content": "@AndrewOh ok interesting. I was trying to design something that could use multiple max7219. Are you daisy chaining them together? and are you using only 5v for the leds? or 12v?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315146",
"author": "Andrew",
"timestamp": "2011-01-26T22:27:08",
"content": "Yes, I’m daisy chaining them together, and only using 5v. I should check the voltage at the 2nd and 3rd chips to see if that’s the problem. I kinda assumed it was just the signal getting too weak after significant distances; I’m driving the clock and load lines directly from arduino pins, and there is nothing to boost the signal at all anywhere in the line, so the 3rd panel is a couple meters away from the arduino.I also plan to make a panel that is RGBW, and uses one max7219 per color.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315172",
"author": "Andrew",
"timestamp": "2011-01-26T22:59:35",
"content": "Eh, I tested it again, this time with a mini 5×7 display I made, 2 inches by 3 inches approx, to see if distance really was the issue, or if it was power draw, or something else, and it works completely fine now. interesting.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315185",
"author": "alan",
"timestamp": "2011-01-26T23:18:29",
"content": "@andrewi get a lot of problems at work and cant figure out how to fix them. So i get up and ask a co-worker for some advice. i sit back down like 2 minutes later, nothing has changed, and it works. It’s just the wonders of the universe i guess.Yea i’m going to try for the RGB idea. maybe i should try with just one color first. would make it a whole lot better.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315205",
"author": "Andrew",
"timestamp": "2011-01-26T23:43:34",
"content": "RGB is gonna be a ton of work. It already took me about 1.5 hours to cut all the wire segments and solder together a single grid of 5×7, it’s gonna take a ridiculous amount of time to do RGB.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "343813",
"author": "Kingsley",
"timestamp": "2011-02-27T18:08:29",
"content": "I really need to learn how to put these things together for my companymy job depends on it.Can I the simplest cct diagram of it, so that I can start from there",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,295.163741
|
||
https://hackaday.com/2011/01/26/ros-gains-full-body-telemetry/
|
ROS Gains Full Body Telemetry
|
Caleb Kraft
|
[
"Kinect hacks",
"Robots Hacks"
] |
[
"biped",
"Kinect",
"NAO"
] |
[Taylor Veldrop] has been playing with an
NAO robot and ROS, mixed with a Kinect
to get some pretty amazing results. The last time we saw any work done with ROS and the Kinect, it was allowing some
basic telemetry using the PR2
. [Tyler] has taken this a step further allowing for full body control of the
NAO
robot. Basic mimicking mixed with a little bit of autonomy allow the NAO to follow his steps around a room and even slice a bananna, or hammer nails. We think this is pretty impressive, especially if he were to mix it together with a
motion tracking stereoscopic display
. Follow along after the break to see it pull off some of these cool feats.
[youtube=http://www.youtube.com/watch?v=TmTW61MLm68&w=470]
| 28
| 28
|
[
{
"comment_id": "314888",
"author": "jimbob",
"timestamp": "2011-01-26T14:27:02",
"content": "I, for one, welcome our new robot overlords.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314891",
"author": "fartface",
"timestamp": "2011-01-26T14:33:11",
"content": "WEll that barely works.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314900",
"author": "Decepticon",
"timestamp": "2011-01-26T14:49:56",
"content": "I was soooo waiting for the robot to rage and stab his….’master’.Otherwise very neat.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314901",
"author": "blkhawk",
"timestamp": "2011-01-26T14:50:54",
"content": "I think the difficulties in picking up a knife might be a “safety feature”.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314909",
"author": "Grovenstien",
"timestamp": "2011-01-26T15:05:20",
"content": "NAO reminds me of observing someone who’s had a massive line of Ketamine!! You now the look, suprise at ones arms and the inability to control them!Great to see this little bot having fun!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314912",
"author": "rasz",
"timestamp": "2011-01-26T15:11:20",
"content": "this video.. its like watching a handicapped person do stuff in kitchen :/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314916",
"author": "Colecago",
"timestamp": "2011-01-26T15:34:28",
"content": "People are complaining about accuracy and such should actually play a kinect game, these applications are light years away from how an actual game reads your movements. Try kinect bowling and throw a curve, it doesn’t work so hot.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314928",
"author": "Rob Wentworth",
"timestamp": "2011-01-26T16:13:52",
"content": "Robots with knifes? I wonder how long until virus writers target virtual telepresence robots.When your telepresence robot stabs somebody, can you use the same defense as bit torrent users (the neighbor kids must have downloaded those MP3s — it wasn’t me!)?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314931",
"author": "Stevie",
"timestamp": "2011-01-26T16:33:15",
"content": "Absolutely amazing! I really enjoyed watching that. There was laughter, ‘aww’ moments, ‘oh noo’ moments, it was great.It’s like watching a child trying to do something. Adorable and really quite impressive. Even more impressive when you consider this is being done by a freelance guy. If he can manage this, imagine what a lab full of people could manage!Good guy, good video, good robot.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314938",
"author": "J",
"timestamp": "2011-01-26T16:44:52",
"content": "I’m hoping he’ll feature a Halloween costume for this guy. I vote Chucky…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314942",
"author": "Gdogg",
"timestamp": "2011-01-26T16:47:57",
"content": "A-M-A-Z-I-N-G.One step closer to life like in ‘surrogate’.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314967",
"author": "robert",
"timestamp": "2011-01-26T17:29:28",
"content": "@GdoggWow, some one else watched that movie….lolAnd a agree with most of the wall. Amazing work.Its downright creepy at times.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314979",
"author": "mark",
"timestamp": "2011-01-26T17:49:52",
"content": "I love it. The motions seemed pretty smooth and accurate, compared to what I was expecting.Who else was reminded of the trailer for the upcoming “Real Steel”http://www.youtube.com/watch?v=ei5l3r1dV4I",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314989",
"author": "notmyfault2000",
"timestamp": "2011-01-26T18:04:23",
"content": "Am I the only one that noticed that due to the way the “eyes” are designed it looks like it’s always looking at the camera? Once I noticed this it got kind of creepy, especially with the knife.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315066",
"author": "james",
"timestamp": "2011-01-26T20:38:43",
"content": "I love the expression on the robot’s faces as he cuts the banana",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315124",
"author": "zool",
"timestamp": "2011-01-26T21:51:16",
"content": "dude, there are way easier ways to cut a banana",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315127",
"author": "X",
"timestamp": "2011-01-26T21:58:26",
"content": "The first thing I thought when I saw this was Gundam, Evangelion, and Big O could be right around the corner after all.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315186",
"author": "ftorama",
"timestamp": "2011-01-26T23:19:26",
"content": "Cocorico, this robot is french ^^",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315190",
"author": "ftorama",
"timestamp": "2011-01-26T23:22:32",
"content": "Cocorico, this robot is french ^^I follow Nao since the very beginning (even before the first announcement) and I really wait the day when it will be available.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315278",
"author": "eteach",
"timestamp": "2011-01-27T01:15:54",
"content": "please make this again with another kineticfor a head so the operator can view his robotichands with depth, wow in ten years there will be robots with amazing remote capabilities. DANGER WILL ROBINSON DANGER!!…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315333",
"author": "Torwag",
"timestamp": "2011-01-27T03:05:11",
"content": "Most amazing is for me the fact that all this is just a clever chain of ‘off-the-shelf’ products with some mojo in between.No tenthousand dollars dev kits, DSPs and FPGAs… just what Santa brought your kids last Christmas (ok, the robot might stick out).Sure lot of room for improvements but its placed on hackaday not on engadet (not that products there would need no improvments)….BTW… Tatami mats, sliding doors…. JAPAN!!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315468",
"author": "Greg",
"timestamp": "2011-01-27T06:36:02",
"content": "3600 euros is equal to 4933 us dollars.. that’s a bit high to become part of the group of devs..albeit the robot seems awesome I just think one could be built at home for less and you wouldn’t have to jump through all the hurdles imposed by the program and none of the commitments either.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315522",
"author": "jaqen",
"timestamp": "2011-01-27T08:23:40",
"content": "@Greg: I’d love to see an article about building a robot like that at home for les money",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315633",
"author": "richard",
"timestamp": "2011-01-27T10:25:40",
"content": "**Puts wii motes in robots hand and puts robot in front of kinetic**Runs",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315646",
"author": "mane",
"timestamp": "2011-01-27T11:03:10",
"content": "Oh cool. Though, seeing this – only a matter of time the little bugger decides (or gets hacked) to cut the owners achilles tendon and stab the guy into the neck.One step closer to avatars :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315928",
"author": "david",
"timestamp": "2011-01-27T21:02:11",
"content": "this is great!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "317993",
"author": "Christina G",
"timestamp": "2011-01-29T16:06:32",
"content": "This is incredible. How long did it take you to create this?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "321019",
"author": "Charlotte",
"timestamp": "2011-02-02T09:15:10",
"content": "Go Taylor!I believe he’s part of this program:http://www.aldebaran-robotics.com/developer_programI think it would be very hard to build your own robot that can do all that, Aldebaran has a 50 people doing R&D on NAO!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,295.29422
|
||
https://hackaday.com/2011/01/25/abusing-http-status-codes/
|
Abusing HTTP Status Codes
|
Caleb Kraft
|
[
"Security Hacks",
"Software Hacks"
] |
[
"html",
"web"
] |
Concerns over privacy online are an ever growing theme. Every day we see people complaining about the policies of facebook and the like. [Mike Cardwell] points out
another method of gleaning a bit of personal data
from you that you may not have seen yet. By embedding a hidden image or using some really simple javascript, he can tell if you are currently logged into Gmail, Twitter, Facebook, or Digg. While this could possibly be used for more nefarious things, he points out that you could also use it for customizing your website to better suit the experience of the browser. For example, if the “reader” is already logged into Gmail, you could have any email links automatically open a gmail instance instead of the local mail client.
| 25
| 23
|
[
{
"comment_id": "314451",
"author": "Jordan",
"timestamp": "2011-01-26T00:07:03",
"content": "You know, I just had this idea earlier today. That’s awesome.What isn’t awesome is that the link is dead. :(",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314470",
"author": "ZeUs",
"timestamp": "2011-01-26T00:30:15",
"content": "Link is quite up.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "314494",
"author": "Caleb Kraft",
"timestamp": "2011-01-26T01:06:41",
"content": "@ALL,this is a “soft opening” of our forums. Please be patient with us as we’re sure there will be issues.After a very long time of people requesting it, here you goforums.hackaday.com-caleb",
"parent_id": "314470",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "314487",
"author": "Standard Mischief",
"timestamp": "2011-01-26T00:56:52",
"content": "30 seconds in, and I have to say “cool”. Here’s the first test, verbatim:“…First of all. Lets check if you’re logged into GMail right now (not including Google Apps)… (Please enable JavaScript). Now, how did I get that information?…”It’s a dangerous web out there everyone. Don’t surf without protection.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314491",
"author": "Setatx",
"timestamp": "2011-01-26T01:04:23",
"content": "Browsing in ‘incognito’ mode (or w/e depending on browser) is a must do nowadays.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314492",
"author": "xyz",
"timestamp": "2011-01-26T01:04:27",
"content": "I’m logged into gmail and have javascript enabled but it says I’m not logged in. Perhaps because I’m using the mobile gmail interface.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314552",
"author": "bluewraith",
"timestamp": "2011-01-26T02:18:57",
"content": "@Caleb KraftWell, thats one way to kill further comments on an article.. just post a link to the new forum! :DI’m assuming a new post will be made announcing the forum when its ready?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "314603",
"author": "Caleb Kraft",
"timestamp": "2011-01-26T03:39:59",
"content": "@bluewraith,there will be a post about it. I just didn’t want to have EVERYONE go there only to have it crash and burn. I’d rather have a few people trickle in and find the issues slowly.",
"parent_id": "314552",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "314560",
"author": "Spork",
"timestamp": "2011-01-26T02:33:03",
"content": "I expected more abuse and less…. status codes.They can see if I’m logged in to a social networking site, OH NO!The real issue is if you can use the JS to pull down the whole page and then regex query for a username/email/real name/address/ip address, then you should worry.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314596",
"author": "IceBrain",
"timestamp": "2011-01-26T03:29:07",
"content": "@Standard Mischief: same here. Surfing without NoScript is liking driving without seat belts.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314694",
"author": "MS3FGX",
"timestamp": "2011-01-26T05:45:37",
"content": "A neat trick, but I am really straining to see how this is a serious concern for anyone.His example at the top about being able to tell if you are logged into a porn site is really stretching it, since you need to adapt this trick to each and every site individually. Unless somebody is willing to go through and find URLs to check for every online service/forum in existence, there isn’t a whole lot to be worried about.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314725",
"author": "Nathan",
"timestamp": "2011-01-26T06:43:35",
"content": "scenario…?Check if the user is using gmail. open a popup with hidden JS (key tracking) and an iframe to log the user out of gmail. If the user then logs back in would it be possible for the hidden js to track keyboard input for that window?Sorry, haven’t programmed JS/web in a while so not sure if it would work? any thoughts?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314774",
"author": "ancat",
"timestamp": "2011-01-26T08:33:21",
"content": "Who cares? CSRF like this has been around for AGES, and well known too. If I am not mistaken, gmail has had this “issue” for a long while, and was even pointed out here.You think this is a big deal? Take a look at getComputedStyle() in javascript. Set visited links and unvisited links to some static values; you can see quickly where this is going. You will be able to retrieve whether or not the user has visited an arbitrary url.This is nothing new.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314789",
"author": "Durgledoggy",
"timestamp": "2011-01-26T09:05:58",
"content": "In chrome it tells me I’m logged into Twitter when I’ve never actually been to Twitter in recent memory. It does tell me I am logged into FB when I am though.In FF it tells me I’m not logged into Twitter and just says “Checking” for facebook, even though I am logged in there.Don’t really see the value of this, but it’s an interesting read.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314790",
"author": "noscript",
"timestamp": "2011-01-26T09:07:07",
"content": "noscript.“First of all. Lets check if you’re logged into GMail right now (not including Google Apps)… (Please enable JavaScript). Now, how did I get that information? Really, really, easily… I generated a hidden image in my HTML similar to this:”I don’t think he knows what I’m logged into. Not much of a hack. Nor a new one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314817",
"author": "octel",
"timestamp": "2011-01-26T10:23:06",
"content": "counterpoint: noscript.net",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314823",
"author": "Sitwon",
"timestamp": "2011-01-26T10:41:41",
"content": "This trick *could* be used to detect if someone is a mod or admin on a given site (thus when they visit the page they see different content). That could result in delayed moderation of malicious links because the mods wouldn’t be able to verify that the link is malicious.Or it could be used to target/harass certain users or groups of users who can be uniquely identified by whether or not an image/page can be loaded.Or it could be used to trick people into thinking that a malicious page is associated with a site they already have a “trusted” relationship with.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314853",
"author": "WimL",
"timestamp": "2011-01-26T12:30:54",
"content": "http://whattheinternetknowsaboutyou.com/Using “a:visited” CSS tag the website scans your history for popular sites.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314877",
"author": "smoker_dave",
"timestamp": "2011-01-26T13:47:20",
"content": "To people asking what is the point? The point is ££££££ / $$$$$$$$If the bad guys (advertising company) knows which sites you visit and how often, he can target adverts to you. this means more money in the bank to him.Maybe knowing which email provider you use does not give him much ammunition, but knowing what types of forum you visit regularly will do.As mentioned above, using hidden hyperlinks on a page and then checking if their colour turns to “visited” is already been used to track peoples internet habbits for a while.The internet is turning into a pretty f*cked up place to hang out…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314881",
"author": "fartface",
"timestamp": "2011-01-26T14:03:47",
"content": "Only if Javascript is on.Oh wait, scriptblock wont let his trick work.IT’s just an example on how modern browser scripting is broken and needs to be fixed.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314903",
"author": "space",
"timestamp": "2011-01-26T14:56:03",
"content": "I hoped everyone is using one browser for the casual websites and the other (one window or tab at the time) for the “risky” and “interesting” side of the web.Surfing without script, history and cache control is asking for trouble.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314922",
"author": "Pup",
"timestamp": "2011-01-26T16:08:45",
"content": "Most of the suggested abusive uses people are coming up with here seem to be completely ignorant of existing blocks on cross-domain access.Site X cannot load up a Gmail page and parse it for information because it’s in a different domain. Likewise, Site X can’t open up a popup to Gmail’s login screen with keylogging enabled because it’s a different domain.The closest you can get to accessing information from an external domain through Javascript alone is this method, or by checking the rendered colour of external links to see if they’ve been visited, and even that’s probably been removed now.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314948",
"author": "luckycharms",
"timestamp": "2011-01-26T17:08:18",
"content": "CSFire protects you from these kinds of attacks on Firefox. I highly recommend it, though you do have to occassionally turn it off to make some sites work (or you can configure it to work with sites you use often, if it creates problems with them). Check it out:https://addons.mozilla.org/af/firefox/addon/csfire/?src=oftenusedwithI blog about it here:http://albosure.blogspot.com/2010/04/plugging-privacy-leaks-with-csfire.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315027",
"author": "Bobby Joe",
"timestamp": "2011-01-26T19:36:27",
"content": "I’ve seen this in the wild already for Twitter and Facebook.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316221",
"author": "frogout",
"timestamp": "2011-01-28T02:26:58",
"content": "Gotta love noscript on this one ~",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,295.358481
|
||
https://hackaday.com/2011/01/25/wireless-sniffing-and-jamming-of-chronos-and-iclicker/
|
Wireless Sniffing And Jamming Of Chronos And Iclicker
|
Joseph Thibodeau
|
[
"Radio Hacks",
"Security Hacks",
"Wireless Hacks"
] |
[
"c1110",
"chronos",
"goodfet.cc",
"i>clicker",
"im-me",
"radio",
"security",
"signal jamming",
"sniffing",
"wireless"
] |
The ubiquitous presence of wireless devices combined with easy access to powerful RF development platforms makes the everyday world around us a wireless hacker’s playground. Yesterday [Travis Goodspeed]
posted an article
showing how goodfet.cc can be used to sniff wireless traffic and also to jam a given frequency. We’ve previously covered the work of [Travis] in
pulling raw data from the IM-ME spectrum analyzer
, which also uses goodfet.cc.
The
Texas Instruments Chronos
watch dev platform contains a C1110 chip, which among other things can provide accelerometer data from the watch to an interested sniffer. The
i>clicker
classroom response device (which houses a XE1203F chip) is also wide open to this, yielding juicy info about your classmates’ voting behaviour. There is still some work to be done to improve goodfet.cc, and [Travis] pays in beer–
not
in advance, mind you.
With products like the Chronos representing a move towards personal-area wireless networks, this sort of security hole might eventually have implications to individual privacy of, for example, biometric data–although how that might be exploited is another topic. Related to this idea is that of sniffable RFID card data. How does the increasing adoption of short-range wireless technologies affects us, both for good and bad? We invite you to share your ideas in the comments.
| 1
| 1
|
[
{
"comment_id": "314373",
"author": "Ferdinand",
"timestamp": "2011-01-25T23:06:47",
"content": "The chronos watch itself contains an CC430 based on an MSP430 processor. The CC1110 is a different chip and it’s based on 8051 architecture (as is the CC1111 on the chrono’s usb connected wireless access point).-Ferdinand",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,295.396526
|
||
https://hackaday.com/2011/01/25/inaccurate-breathalyzer-is-still-quite-nice/
|
Inaccurate Breathalyzer Is Still Quite Nice
|
Mike Szczys
|
[
"Arduino Hacks"
] |
[
"alcohol sensor",
"breathalyzer",
"mq-3"
] |
Sure, [Hunter Scott’s]
Breathalyzer can only differentiate between hammer and sober
, but look how nice it came out. He’s using an MQ-3 alcohol sensor which,
from previous projects
, we know is very difficult to accurately calibrate. But if you want to monkey around with embedded systems you’ve got to have a goal. [Hunter] chose a gorgeous aluminum project enclosure, adding a big LCD display to the to the lit. The switch on the bottom selects between on, off, and charging modes. He’s using a USB charger from Adafruit to top off the lithium battery inside. Everything runs on 3.3V with the exception of the sensor which gets its 5V supply from a boost converter. An Arduino is the brains that pulls everything together.
See [Hunter’s] video description of the project embedded after the break.
[youtube=http://www.youtube.com/watch?v=JRFDamwBsAs&w=470]
| 14
| 14
|
[
{
"comment_id": "314291",
"author": "Koolguy007",
"timestamp": "2011-01-25T22:11:39",
"content": "Stop.. hammer time.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314292",
"author": "MrX",
"timestamp": "2011-01-25T22:13:54",
"content": "Halt! Is that a gameboy screen?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314304",
"author": "osgeld",
"timestamp": "2011-01-25T22:29:33",
"content": "what part is the lit?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314445",
"author": "BP",
"timestamp": "2011-01-25T23:51:49",
"content": "If you’re drunk enough to think you need to use a it you shouldn’t be driving.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314475",
"author": "mjrippe",
"timestamp": "2011-01-26T00:36:44",
"content": "@osgeld & Koolguy007 – I think they are including typos just to encourage more comments these days. Of course BP is playing along…oh wait, so am I! Maybe I “need to use a it” after that glass of wine.Back On Topic – I would suggest that a *smaller* screen would help reduce the overall size. But if you’re really “hammer” you might not be able to read it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314761",
"author": "Paul",
"timestamp": "2011-01-26T07:55:03",
"content": "@MrX it seems to be an ST7565.Very nice graphic lcd.http://www.adafruit.com/index.php?main_page=product_info&cPath=37&products_id=250",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314772",
"author": "Ultimatejim",
"timestamp": "2011-01-26T08:31:43",
"content": "to the to the",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314851",
"author": "echodelta",
"timestamp": "2011-01-26T12:24:12",
"content": "Sexy case, recessed screws cool. Dorky toggle switch sticking out where Murphy can turn it on and kill the battery, fail. The unit cannot be handled or put in anything without power switch coming on at random. Millions of flashlights are made the same way. You will find them dead when you pull them out to use what you thought was a good light.Hint, the voltage selector on older computer power supplies makes a great Murphy proof power switch!Mount behind a half inch (1cm) hole glued in place for sexy smooth lines, and no surprises.911 operators would like it if all pocket phones had the same feature. Murphy really likes to poke away at exposed controls.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314924",
"author": "Hunter",
"timestamp": "2011-01-26T16:09:25",
"content": "@echodelta Dude, you have no idea how much using that toggle switch pained me. But I had a deadline, and had to use what was laying around.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314935",
"author": "mic",
"timestamp": "2011-01-26T16:39:41",
"content": "I would simply try to touch my nose. If you poke your eye out well you failed. Nice case. Too bad it is such a pain to calibrate.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314957",
"author": "nootropic",
"timestamp": "2011-01-26T17:16:26",
"content": "I spent a lot of time trying to calibrate the MQ-3 alcohol sensor and did a big writeup here:http://nootropicdesign.com/projectlab/2010/09/17/arduino-breathalyzer/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315009",
"author": "Khordas",
"timestamp": "2011-01-26T18:41:13",
"content": "@ nootropic; I read your link. as far as calibrating the sensor, there are commercial gas cylinders available with different concentrations of alcohol vapor. They’re expensive, but if you are good at social engineering, any lab that does breathalyzers will have some to calibrate their machinery, and you wouldn’t need much. Another way would be to make a solution of alcohol and water, with the concentration adjusted so that the partial pressure of alcohol above the solution was a known value.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315038",
"author": "mrgrumpygill",
"timestamp": "2011-01-26T19:55:58",
"content": "You should use Henry’s Law for that. All the coefficients can be easily found online or you can consult Perry’s Chemical Engineering Handbook.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315772",
"author": "Samuel",
"timestamp": "2011-01-27T15:58:34",
"content": "So he basically slapped together a bunch of already made circuit boards and he calls this POS a project?Hackaday, how low can you go?",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,295.447891
|
||
https://hackaday.com/2011/01/25/monocrome-to-magnificent-computer-display-chronology/
|
Monocrome To Magnificent: Computer Display Chronology
|
Mike Szczys
|
[
"Video Hacks"
] |
[
"cga",
"crt",
"display",
"evoluntion",
"history",
"not a hack",
"vga"
] |
Remember when CGA came out and made monocrome monitors look horrible? Well CGA is crap, VGA is where it’s at. Wait… weren’t there a couple of standards in between those two? Take a walk down memory lane and
relive the evolution of computer display technology
. You’ll start with displays that are more or less CRT oscilloscopes and end up in better than high-def territory. The article is an interesting read but for those with short attention spans jump to the fourth page and check out the chart of technologies, resolutions, and implementation dates. We’ve come a long way in a few short decades.
| 45
| 43
|
[
{
"comment_id": "314246",
"author": "bogdan",
"timestamp": "2011-01-25T21:34:29",
"content": "Really nice history lesson. Didn’t know they had a pen type input device as early as 60s.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314272",
"author": "Rob Wentworth",
"timestamp": "2011-01-25T21:48:01",
"content": "In the display history, there is an embedded NewTek Video Toaster video. Back in those days the Video Toaster contained HUGE amounts of RAM compared to contemporary devices, and there was a huge tariff on foreign RAM imports, to protect American RAM manufacturers (who quit making RAM anyway). Because the import tariff did not include devices containing RAM, NewTek imported large quantities of new laser printers and stripped the RAM from them, sending new RAMless laser printers to the landfill. Amazingly, this was far cheaper than just importing RAM. Sad, but true (according to NewTek employees I talked with back then).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314287",
"author": "svofski",
"timestamp": "2011-01-25T22:08:14",
"content": "[quote]Remember when CGA came out and made monocrome monitors look horrible?[/quote]No, I remember the opposite. I remember when I first saw a colour CGA monitor and almost cried. What used to be so pretty in monochrome, looked impossibly pukesome in glorious cyan-magenta-white palette and in eyecancerous green-red-babyboo palette too. And that’s the story of my ruined childhood. I still love monochrome monitors, even though I don’t have any anymore.I would really love to hear a story from an engineer who came up with this magnificient palette. I promise not to throw my rotten tomatoes and eggs. The wounds have healed more or less and I just want to know.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314297",
"author": "bty",
"timestamp": "2011-01-25T22:16:49",
"content": "@svofski:http://en.wikipedia.org/wiki/Color_Graphics_Adapter#Color_paletteI remember first playing IBM’s alley cat in monochrome and later in amazing 4bit color!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314306",
"author": "Adam",
"timestamp": "2011-01-25T22:31:11",
"content": "It’s monochrome. :-) And very interesting history.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314308",
"author": "cmholm",
"timestamp": "2011-01-25T22:40:27",
"content": "The original Hercules graphics card seemed the cat’s meow while doing actual work, compared to the crappy rez from CGA.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314316",
"author": "GCL",
"timestamp": "2011-01-25T22:44:01",
"content": "Interest one. However they are completely forgetting the very capable Apple ][ and his family, and the Macs. That’s one example of technology running at Warp9 right there.In fact I may be the only person left who remembers enough R6502 assembler to work with one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314329",
"author": "Brent",
"timestamp": "2011-01-25T22:53:50",
"content": "Remember when you still had to use a Hercules-style monochrome card to have a second display for debugging? The last time I had to go scrounge for a monochrome PC monitor and card was 1999.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314398",
"author": "svofski",
"timestamp": "2011-01-25T23:13:17",
"content": "In fact I may be the only person left who remembers enough R6502 assembler to work with one.That’s a very bold statement. Check out the C64 crowd.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314399",
"author": "GCL",
"timestamp": "2011-01-25T23:15:39",
"content": "@svofskiI’ve used one of those things. I even learned basic on Pet system. I do not consider them to be a proper application of the processor, and as it happens the part number I cited was when they were still being made by the late Rockwell Semiconductor house.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314439",
"author": "svofski",
"timestamp": "2011-01-25T23:47:16",
"content": "@GCL: but people still code for 6502 (ok, mostly for 6510 if that matters)… I rather thought that you would see it as a positive thing.Was R6502 significantly different from MOS6502? I thought they were the same thing, just from different sources.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314447",
"author": "GCL",
"timestamp": "2011-01-25T23:53:55",
"content": "@svofskiI don’t because that particular processor never went mainstream the way the other members of the family did.Oh and the differences were such that the R6502 actually ran faster, then the MOS6502. And by the time the company was spun back to its original sources, and now I’m not even sure they are still in business, worse luck, they had even seriously considered making them in CMOS, about the same time as the Apple //C came out.The basic Apple family member, except the 2GS system wore the R6502 (Could also be the SY6502, it doesn’t matter.), and could run rings around the C64. It wasn’t the software, or even the fanbase, it was the amazing graphics, that were largely the doing of Don Lancaster…..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314466",
"author": "svofski",
"timestamp": "2011-01-26T00:26:14",
"content": "@GCL: very interesting, I hear about these differences for the first time. Have you considered writing a bit about this, something more substantial than HaD comments would allow? Could be interesting reading for many.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "314493",
"author": "Caleb Kraft",
"timestamp": "2011-01-26T01:06:24",
"content": "@ALL,this is a “soft opening” of our forums. Please be patient with us as we’re sure there will be issues.After a very long time of people requesting it, here you goforums.hackaday.com-caleb",
"parent_id": "314466",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "314468",
"author": "nes",
"timestamp": "2011-01-26T00:27:54",
"content": "@CGL: 6502 is still alive and well today (at least the instruction set is). Those keyring-sized digital photo frames use an embedded one albeit beefed up with some on board RAM and modern peripherals.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314472",
"author": "GCL",
"timestamp": "2011-01-26T00:33:00",
"content": "@nesWay ahead of you. I’ve known about that effort since about the time I discovered HaD. For what I actually want to re-purpose one of those pests for, there are two objections, one is that they’ve gone ahead and probably updated them. (Need to buy one from Target to see if I am right…). The other is how to apply them.@svofskiIt’s been done before. I believe it first surfaced on a site discussing the 6502.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314480",
"author": "mjrippe",
"timestamp": "2011-01-26T00:44:46",
"content": "Light Pens! When is the last time you used one of those? I have an old magazine with a DIY light pen article for the C64 I might have to dig out…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314490",
"author": "nes",
"timestamp": "2011-01-26T01:03:16",
"content": "@CGL: I haven’t looked closely at one either but I think it’s a fair bet there’ll be a high speed SPI port on there for interfacing the LCD. Some shift registers may be all you need to get parallel I/O from that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314511",
"author": "svofski",
"timestamp": "2011-01-26T01:25:23",
"content": "Pretty spartan forums so far, no feature creep at all. Where are my “new post” and “reply” buttons? =)",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "314518",
"author": "Caleb Kraft",
"timestamp": "2011-01-26T01:38:08",
"content": "@svofski,yeah, issue number one resolved. I’ve found a few new ones too, but I’ll work on those in a little while.",
"parent_id": "314511",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "314530",
"author": "the_woz",
"timestamp": "2011-01-26T01:54:26",
"content": "@GCL: MOS invented the 6502, Rockwell manufactured licensed 6502 using the exact same mask from MOS. Therefore a 1MHz MOS6502 runs at the very same speed than a 1MHz R6502 there is not a single difference, a NMOS 6502 have the same virtues and deffects no matter the manufacturer.An Apple II running circles around a C64? Because it had better graphics?Are you serious, even a (sorry speccy guys) ZX Spectrum have way better graphics than an Apple II.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314535",
"author": "strider_mt2k",
"timestamp": "2011-01-26T02:03:08",
"content": "DudeI ran a Hercules card right next to a CGA card in my 7Mhz Turbo XT back in the land line BBSing days.There was this killer little TSR that allowed me to cut and paste local phone numbers over to the monochrome screen from online lists so I could find and hang on as many systems as possible within my local calling area.GOODFREAKINGTIMES",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314543",
"author": "GCL",
"timestamp": "2011-01-26T02:09:34",
"content": "@the_wozVery serious. The Apple ][ had two styles of graphics, low-res which were basically characters as graphics, and straight out of the works of Don Lancaster. And the high-res ones were vector oriented, and came in very dense. It was on a par with the methods outlined for doing vector graphics for the early displays.Your ZX81 used ASCII characters as graphics, the same as a TRS80 ModelI did.The foundry behind the R6502 did indeed start out that way, but by the approximate end of the series of Apples who used the R6502 and just before the 65C02 came out, they had managed to advance themselves past the MOSTEK ideas.In fact for proper programming of the Apple in assembler they even suggested the documentation from the company.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314544",
"author": "GCL",
"timestamp": "2011-01-26T02:10:14",
"content": "@the_wozMinor typo, should be TRS80 Model_I",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314546",
"author": "svofski",
"timestamp": "2011-01-26T02:12:33",
"content": "@the_woz: nice magazines! going to check them out.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314567",
"author": "Paul Potter",
"timestamp": "2011-01-26T02:40:23",
"content": "Interesting article.That Video Toaster promo was very impressive.MDA/Hercules had a much better text display than CGA too.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314591",
"author": "Richard Milward",
"timestamp": "2011-01-26T03:26:27",
"content": "On page 2 of the Ars Technica article, the computer in the background of the IBM 2250 Display Unit is an IBM 1130, not a System/360 [the correctly formatted name]. And they should be showing the IMHO cooler-looking Amiga 1000, which was introduced first, not the 500.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314690",
"author": "the_woz",
"timestamp": "2011-01-26T05:40:55",
"content": "Thanks svofski.@GCL:ZX81 != ZX Spectrum. The Spectrum have bitmap graphics of the same resolution of the Apple][ and 16colors.The Apple ][ video circuitry and graphic modes are ‘just’ a hack, a clever one typical of the genius designs of Steve Wozniak at the time, but a hack nonetheless. Color was achieved by exploiting weaknesses of the NTSC color system. The hires mode introduced in the ][e is 560x192pixels, hardly vector class graphics.MOSTEK is not the creator of the 6502. It’s MOS Technology, two different companies.The 65c02 (used in the enhanced ][e and the ][c) was created by WDC and licenced to Rockwell among others. Rockwell added some extra opcodes to the 65c02, those opcodes where adopted, with a couple more by WDC and added to their 65c02.@all: Sorry for the offtopic.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314706",
"author": "GCL",
"timestamp": "2011-01-26T06:01:25",
"content": "@the_wozSorry, I am allowed to be wrong sometimes, and of course so are you. You are wrong regarding the hires mode of the Apple, it was 640 x 200, (which I do remember). It was indeed vector graphics, because it followed the classic Cartesian coordinate system.I’m allowed to be wrong concerning the thing from Sinclair.However processors aside, the history for them is quite muddled. MOS Technologies, did indeed create the first ones, the later ones leading up to the 65C02 were by both. The WD65C02 was indeed by them, at the same time they were also building the 65816 or 65802. So the Rockwell 65C02 was in fact from WDC. History does not properly reflect who is who.We should just agree that we know our hardware best.I am as it happens a hardware specialist.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314709",
"author": "Luke",
"timestamp": "2011-01-26T06:04:47",
"content": "I love the embedded video of the NewTek stuff. The bit about LightWave at the end saying “now with RAYTRACING” is priceless.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314778",
"author": "Pilotgeek",
"timestamp": "2011-01-26T08:41:27",
"content": "GCL is a complete tool.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314797",
"author": "svofski",
"timestamp": "2011-01-26T09:20:53",
"content": "http://en.wikipedia.org/wiki/Apple_IIeDouble-High-Resolution: 560×192 (16 colors) **effectively 140×192 in color, due to pixel placement restrictionsI completely can’t understand the vector graphics claim. Vector graphics would be when an arbitrary line on screen from x1,y1 to x2,y2 would not require rasterization.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314800",
"author": "Nitori",
"timestamp": "2011-01-26T09:31:28",
"content": "The Atari 400/800 and TI99/4a generally had far better graphics then IBM CGA and they predated it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314822",
"author": "Jason Knight",
"timestamp": "2011-01-26T10:41:22",
"content": "Their chart of PC adapters is way off the mark… MDA was 720×384, CGA went to 16 color not eight (hell I’m writing a NEW TP7 unit to use the undocumented 160×100 16 color mode right now for the retrochallenge winter warmup), EGA was 16 colors out of 64, not 256……and of course it’s a crime to omit the PcJr/Tandy1k 16 color modes which were made possible using basically the same hardware as a CGA by just giving it more than 16k of RAM.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314955",
"author": "GCL",
"timestamp": "2011-01-26T17:12:46",
"content": "@Pilotgeek:You are a small shell script. I’ve been in this mad business for over twenty years. I know that computer far better then anyone save its builders.@svofski:Wikipedia is wrong. Again. I know the page you’re looking at. I am also not going to change it. They were thinking of the Apple 2 as applied to the technology before the Apple 2 Plus. 2 Plus to the 2 E that’s the technology I’ve been describing.Case closed. We’ll start insulting each other over a different subject.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314962",
"author": "svofski",
"timestamp": "2011-01-26T17:23:37",
"content": "@GCL: if Wikipedia is wrong, it’s all yours to fix it. But you need some reliable reference material to back up your claims.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314966",
"author": "GCL",
"timestamp": "2011-01-26T17:28:27",
"content": "@svofskiToo tempting.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315088",
"author": "Toob Noob",
"timestamp": "2011-01-26T21:07:08",
"content": "Ah the //e. Still have mine. Still runs.I think I can resolve the raster/vector issue. You guys are both right, but you’re talking at cross-purposes:When GCL talks about vectors, he’s talking about the BASIC command “HPLOT” that said “draw a line from X1,Y1 to X2,Y2”. The interpreter would then jump into some ROM assembly code that drew the line on a 280×192 raster display. The raster display was capable of 560×192 in the presence of the extra 64K of bank-switched memory in the 80-column card of the //e.When svofski talks about vectors, he’s talking about an X-Y display, like that used in early Atari games like Battlezone or Asteroids. The electron beam physically moves in a straight line from X1,Y1 to X2,Y2, like an oscilloscope.560×192 in monochrome was very high resolution for 1983. 280×192 was also pretty darn good. Color was implemented by a half-pixel shift controlled by the high bit: each byte was mapped to 7 monochrome bits, and if the high bit was set, the physical position of the next 7 pixels was shifted over by a half-pixel. The half-pixel shift meant that Orange/Blue could become Purple/Green when this signal was displayed on a monochrome display. (I’ve forgotten the colors you ended up with when you did it in double-high-res mode.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315168",
"author": "Pilotgeek",
"timestamp": "2011-01-26T22:53:35",
"content": "@GCL : I’m a small shell script? What does that even mean??You’ve been right on about 1/10 of the statements you make, yet you flaunt your knowledge around like you own the place. 20 years in the field means nothing; I know guys with more than that experience in computers/IT and I wonder how they manage to actually know so little.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315174",
"author": "GCL",
"timestamp": "2011-01-26T23:01:44",
"content": "@Pilotgeek:It basically means you are something that is used on a computer who runs Linux or UNIX to do something routine. (And that also includes mainframes.)Wrong! I’ve been right about 75% of the time, which is about par for me. I’m also not afraid to accept when I’ve been wrong. And I do indeed know to use the Internet to do proper searches. The references for the Apple came up after the flawed Wikipedia one. Those are helpdesk drones and ‘droids, and menials. Not the sort who actually gets his hands/paws and octopodal manipulators and even grubby protuberances into actual hardware.I’ve even spent about three to five years working on the service end of the computer business.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315472",
"author": "Pilotgeek",
"timestamp": "2011-01-27T06:41:36",
"content": "@GCL: I know what a shell script is. Why is that an insult?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315474",
"author": "Pilotgeek",
"timestamp": "2011-01-27T06:43:44",
"content": "BTW, GCL, you have an absolutely terrible web page.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315477",
"author": "GCL",
"timestamp": "2011-01-27T06:46:48",
"content": "@Pilotgeek:There are somethings a properly trained and qualified computer worker, technologist and everything imaginable with regards to computers and technology related will not explain. (That’s why I stated that then.)As for the website, it says it is temporary. I may have something better RSN.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315534",
"author": "Pilotgeek",
"timestamp": "2011-01-27T08:36:54",
"content": "I’m a small shell script. So I’m typically quite useful for small repetitive tasks? I fail to see how I should be taking offense to this.If you wanted a computer related insult to show your oh-so-incredible knowledge of computers, you could’ve thought of something a little better. I think your insults need a little debugging, sir ;)Also, congrats on bragging for about the 3rd time about being a “qualified computer worker”. You’re not the only one here certified and experienced in many computer and datacenter type fields.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315536",
"author": "Pilotgeek",
"timestamp": "2011-01-27T08:37:28",
"content": "Sorry, Mods, for littering the threads with garbage.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,296.064552
|
||
https://hackaday.com/2011/01/25/jamming-gripper-completes-robot-drug-dealer/
|
Jamming Gripper Completes Robot Drug Dealer
|
Mike Szczys
|
[
"Robots Hacks"
] |
[
"coffee grounds",
"gripper",
"handi-vac",
"jamming",
"reynolds",
"robot"
] |
Here’s an inexpensive way to
build your own jamming gripper
. [Steve Norris] combined a robot arm with a few inexpensive items to achieve similar results as
the original
. Much like
the last DIY version
he started with a balloon and some coffee grounds, but instead of using his own body as a vacuum pump he sourced a
Reynolds Handi-Vac
, an inexpensive food vacuum sealer. It connects to the balloon using some plastic tubing, and sucks all of the air out, locking the coffee grounds around an object for a firm grip. The video after the break even shows the gripper picking up two aspirin. At first we thought a servo motor was being used to seal off the tube once the air had been pumped out. Instead, it is covering a hole in the tubing, which breaks the vacuum when it’s time to let go of an object.
[youtube=http://www.youtube.com/watch?v=quvRo9pvRdI&w=470]
[via
Bot Junkie
]
| 10
| 9
|
[
{
"comment_id": "314203",
"author": "Philip",
"timestamp": "2011-01-25T20:19:58",
"content": "Nice setup, but would be a LOT quicker gripping with rigid tubing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314205",
"author": "Luke",
"timestamp": "2011-01-25T20:23:22",
"content": "I’ve heard of some medical applications of similar technology. For example a headrest in an mri that is basically a plastic bag full of beads that gets vacu-pumped to help hold your head perfectly still during a scan.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314230",
"author": "Hirudinea",
"timestamp": "2011-01-25T21:09:59",
"content": "Thats a nice gripper, but it WILL NOT be a drug dealer until it has a gun.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314277",
"author": "Hackius",
"timestamp": "2011-01-25T21:52:03",
"content": "This is nice but what about industrial grippers? They already have vacuum grippers in chip handling. Can’t we just source those?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314319",
"author": "Brian",
"timestamp": "2011-01-25T22:46:00",
"content": "Vacuum pickups only work on non porous flat materials. This gripper works with irregular shapes. The original seems to have been developed by the University of Chicago.http://www.youtube.com/watch?v=0d4f8fEysf8. It is revolutionary, a simple design with huge array of applications.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314367",
"author": "M4CGYV3R",
"timestamp": "2011-01-25T22:58:16",
"content": "@Hirudinea: Not one of the drug dealers I frequent…I mean know casually…own a gun which they keep in their house.I know one dealer who’s a bit of a gun nut, but he keeps them all out at his parents farm and shoots them for fun, not revenge or business.On the other hand, if this can break up my QPs and divvy up 1/8ths for me, I’ll totally get into the game. Bonus points if it can pick out seeds.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314542",
"author": "strider_mt2k",
"timestamp": "2011-01-26T02:09:34",
"content": "“Jamming gripper completes robot drug dealer”There is no robot pornography here.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "314604",
"author": "Caleb Kraft",
"timestamp": "2011-01-26T03:42:29",
"content": "@ALL,this is a “soft opening” of our forums. Please be patient with us as we’re sure there will be issues.After a very long time of people requesting it, here you goforums.hackaday.com-caleb",
"parent_id": "314542",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "314555",
"author": "Torwag",
"timestamp": "2011-01-26T02:20:35",
"content": "As Luke pointed out already this method is used for emergency medical services.Patients with possible spine injury will be moved carefully on a kind of mattress filled with Polystyrene beads. They suck the air out, the person will molded inside and be fixated for transport. Smaller pillow like units can fixated a broken leg or arm during transport.Guess it could improve the gripper to use those Polystyrene beads, however, the grinded coffee is really a nice hack.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314585",
"author": "itwork4me",
"timestamp": "2011-01-26T03:04:50",
"content": "remember the crash bags in demolition man?",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,295.675565
|
||
https://hackaday.com/2011/01/25/sparkfun-free-day-recap/
|
Sparkfun Free Day Recap
|
Chris Nelson
|
[
"News"
] |
[
"free",
"sparkfun"
] |
It looks like the dust has finally settled with
sparkfun’s free day
. They managed to give away $150,541 to users and $22,988 to charity. The general idea is you could ether take $10/year you’ve been a sparkfun customer, or take a 10 question quiz and earn $10/correct answer plus some money for charity. It looks like some technical difficulties prevented people from taking the quiz until free day had been under way for a couple of hours. Once they managed to fix the problem the money went pretty fast, eating up the last $40,000 in about 5 minutes. So did anyone manage to get anything good? Be sure to checkout sparkfun’s recap video after the break for more details.
[youtube=
http://www.youtube.com/watch?v=HvWhu-qzY7s&feature=player_embedded
&w=470]
| 38
| 37
|
[
{
"comment_id": "314151",
"author": "ZeUs",
"timestamp": "2011-01-25T19:01:59",
"content": "Not a hack.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314153",
"author": "ZeUs",
"timestamp": "2011-01-25T19:03:07",
"content": "I didn’t mind though. I’m just pointing random stuff out.I need more sleep. Or less. I’m not sure.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314155",
"author": "Jakezilla",
"timestamp": "2011-01-25T19:07:42",
"content": "@ZeUs this isn’t just a site for hacks, it is also for news in the community of electronics and other cool/interesting projects. I am getting kind of sick of the “not a hack, wtf” posts. If you are that 1337, go start your own IRC channel with all of your other too-good-for-HaD people and have fun.@everyone else who will probably start complaining about not getting any FREE money on SF, IT WAS FREE, YOU WEREN’T OWED ANYTHING SO STOP ACTING LIKE IT!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314156",
"author": "cb88",
"timestamp": "2011-01-25T19:13:17",
"content": "@Jakezilla IRC is not a hack… what the… X.x go away:C I always miss the free day X.x",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314157",
"author": "Brian",
"timestamp": "2011-01-25T19:14:06",
"content": "A forgivable trespass against the ‘Hack Only’ rule. This is of great interest to the people here.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314158",
"author": "Jakezilla",
"timestamp": "2011-01-25T19:17:58",
"content": "lol, I was just saying the types of people that are all anti HaD because it doesn’t have “hacks” strike me as the same people that think it is more leet or less mainstream (therefore better) to spread info old school with IRC or NewsGroups. But I might be the only one that thinks that way…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314160",
"author": "CalcProgrammer1",
"timestamp": "2011-01-25T19:22:02",
"content": "I managed to pick up $60 from the Free Day quiz, ended up buying a soldering station with it. The stupid thing doesn’t work (doesn’t heat up) and still haven’t gotten any reply from them. It looks like a nice soldering iron just mine must have a bad heating element.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314161",
"author": "pmckenna",
"timestamp": "2011-01-25T19:23:08",
"content": "I got my $20 in loyalty cash as soon as freeday started. I put it towards an IMU I plan to use on a segway project.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314164",
"author": "Osgeld",
"timestamp": "2011-01-25T19:24:30",
"content": "might want to get that sand out of your ass, its making you jumpy",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314171",
"author": "keepkaymihome",
"timestamp": "2011-01-25T19:39:39",
"content": "I got 50 in loyalty. Grabbing a bus pirate and a few other bits and pieces.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314172",
"author": "dkavanagh",
"timestamp": "2011-01-25T19:42:17",
"content": "I answered the first 7 questions correct, then the money ran out. So, I ordered about $70 worth of loot and paid some shipping costs. Very nice!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314176",
"author": "slipp",
"timestamp": "2011-01-25T19:45:03",
"content": "@CalcProgrammer1 – did you get the sparkfun branded 936 knock off?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314178",
"author": "bluewraith",
"timestamp": "2011-01-25T19:47:36",
"content": "I wasn’t able to log in to do anything. About the time I walked into work that day the server hamsters woke up and started running. I was kinda hoping to answer the quiz questions and make out with an easy $100 but I think I saw the front page all of once.. there would have been no way to get through a quiz.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314181",
"author": "M4CGYV3R",
"timestamp": "2011-01-25T19:52:48",
"content": "@jakezilla: Actually, HAD is for hacks, in case you didn’t know. Just read the nifty blurb in the upper-right of the site, which you’ve probably never bothered to glance at:“Hack a Day serves up fresh hacks each day, every day from around the web and a special How-To hack each week.”This is not Gawker – they don’t do “Top X ____” lists (with the exception of the one flamebait twitter client post). They don’t do “In the news” posts…they do HACKS.This post is nifty, it HELPS people hack, but it is – in fact – not a hack. The only saving grace is that there is no arduino involved.Regarding Free Day, they made it so convoluted and hard to get in on that I’m sure there were a few click-spammers that got what they wanted, and the rest just got shafted by net/timing/errors as has happened with SF Free Day in the past.It’s a neat idea, but they SERIOUSLY need to fix their methods. The quiz was an atrocious idea for a time-sensitive event.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314192",
"author": "Colecago",
"timestamp": "2011-01-25T20:03:20",
"content": "I totally forgot about freeday until I saw the sparkfun recap that night. I was pretty mad at myself.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314194",
"author": "alan",
"timestamp": "2011-01-25T20:05:40",
"content": "@M4CGYV3Rand@everyone else who keeps saying this is not a hack.they post 4-5 things a day – almost always involves someones project, of which are mostly hacks.so why can’t they post other links and news every once in a while? spark fun helps a lot of people hack – and a lot of those people wouldn’t be hacking as easily and affordably if it wasn’t for spark fun.so leave sfe alone bra",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314206",
"author": "Chuckt",
"timestamp": "2011-01-25T20:30:24",
"content": "Last year wasn’t free day. It was work day. We worked at sitting on our terminals to give them free advertising for something that none of us could receive. Let me remind you we got nothing for that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314215",
"author": "mick",
"timestamp": "2011-01-25T20:52:24",
"content": "geez its not like your losing a hack post because of this. this is added on top of them. if you dont like it why do you read it. i dont like mushrooms so i dont eat them, i dont eat them and say “man i hate mushrooms” then take another bite and complain to the grocery store that there selling something i dont like",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314227",
"author": "CalcProgrammer1",
"timestamp": "2011-01-25T21:04:54",
"content": "@slippYeah, it’s the SparkFun-branded Atten 936b. I’ve used an Atten station before (school robotics lab) and it works well, just the SparkFun unit didn’t seem to work. I scoped the output and it did seem to output 24 volts so I think the heater is bad. The LED came on and never went off (supposed to flash when it reaches the set temperature).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314228",
"author": "moo",
"timestamp": "2011-01-25T21:05:48",
"content": "@ChucktLast year i sat for 3 hours pressing the enter key but it paid off and i got a arduino starter kit. I remember a number of other people getting stuff too. Sux i missed it this year though :(",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314238",
"author": "FDP",
"timestamp": "2011-01-25T21:24:10",
"content": "I like Sparkfun, but after last year’s “annoy the shit out of existing customers day” I’ll let them keep their $20… It isn’t free if it eats up my time.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314243",
"author": "DOT850",
"timestamp": "2011-01-25T21:29:36",
"content": "@FDPI second you. Didn’t even bother with it this year after the disaster that was last year. I’ve been using Sparkfun since like 2007 when they saved my senior design project with overnight shipping. :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314247",
"author": "chuckt",
"timestamp": "2011-01-25T21:35:48",
"content": "Moo,Relationships are reciprocol or complimentary. When relationships are left to chance with impossible odds then Sparkfun does not value their relationship with me.Chuck",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314273",
"author": "Chuckt",
"timestamp": "2011-01-25T21:48:25",
"content": "It would have been more fair for Sparkfun to say, “We want some advertising but we can’t realistically give prizes to everyone. Can we USE you to sit at a keyboard and create a frenzy to give us free advertising?” That would have been honest to let the customer know that they can’t get free shipping for their orders because they don’t respect us as customers but instead they used us and lead us on to give them something for free while the rest of us got nothing. After all, it isn’t like the paying customers deserved anything for being a customer because there isn’t a relationship when you disrespect your customers.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314300",
"author": "George Johnson",
"timestamp": "2011-01-25T22:18:41",
"content": "I couldn’t even log in. I was going to go for the money I was supposed to have in my account from being a member for several years.But I couldn’t even get a “log in OK”, I’d refresh, or press the log in, but it would just hang up. I’d have to go back one page and try again.I’m guessing, unless you have some software to automate this in some way, or just happen to be VERY lucky, you’re not getting anything.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314326",
"author": "nick",
"timestamp": "2011-01-25T22:51:42",
"content": "I got myself a free bus pirate complete with grabbers and connector harness. :DSparkfun freeday rocks!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314349",
"author": "BrokenArduino",
"timestamp": "2011-01-25T22:54:24",
"content": "I used tcp tuned to be a little more aggressive and a script to load pages. I could load pages somewhat fast (~10 seconds per page). Got all questions right. No luck last year. Doing this manually is not possible I think.Their servers suck doh.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314374",
"author": "crenn",
"timestamp": "2011-01-25T23:08:35",
"content": "I was there from the time it started (I had logged in days before, and it didn’t log me out) to the time it ended. I had to try to log back in around 3 times and I only saw the first question 3 times and had trouble submitting, so I didn’t get anything for a 2nd year in a row. However if they do it next year, I’ll be there again most likely! 3rd time is a charm right?As for the people whinging, seriously, calm down, it’s not like they have to do this at all. It’s also not a case of them intentionally causing problems, there were bugs and issues that they didn’t expect, bugs they’ve now fixed. I can understand disappointment, I was disappointed too, but life moves on and there will probably be more chances later.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314450",
"author": "Pete Prodoehl",
"timestamp": "2011-01-26T00:04:41",
"content": "I answered the first question correctly. Three times. And got nothing. Every time I submitted it, I got no response from the server. Oh well, it was fun to try… next year I’ll just take the free money. :) Thanks to SparkFun for doing it, and for making the charitable donations.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "314499",
"author": "Caleb Kraft",
"timestamp": "2011-01-26T01:10:23",
"content": "@ALL,this is a “soft opening” of our forums. Please be patient with us as we’re sure there will be issues.After a very long time of people requesting it, here you goforums.hackaday.com-caleb",
"parent_id": "314450",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "314463",
"author": "ZeUs",
"timestamp": "2011-01-26T00:20:26",
"content": "I think I was trolling a little. It’s just that everytime something that feels so “community” posts commercial stuff something insides me cringes (a little).On the other hand sparkfun is properbly the only company to directly assist DIY electronic engineering. Which is somehow also different from hacks, since it’s regular engineering! However that is great fun and often feels like abusing nature’s laws to do our bidding.I just think that the name “hack a day” doesn’t really cut it anymore and I would like the see the site owners define the name properly.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314464",
"author": "ZeUs",
"timestamp": "2011-01-26T00:20:53",
"content": "*define the sites goals properbly. Now I’m off to bed.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314547",
"author": "strider_mt2k",
"timestamp": "2011-01-26T02:12:35",
"content": "I missed it completely but have signed up and ordered some parts that I hope will make my Spy Gear Video Trakr a little more interesting.Next time though…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314587",
"author": "Scott",
"timestamp": "2011-01-26T03:11:24",
"content": "I landed $40, and put it towards an MP3 trigger. Using it for sfx for costume projects for both Anime Conventions and Halloween.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314602",
"author": "Mike",
"timestamp": "2011-01-26T03:38:07",
"content": "I like sparkfun and will be ordering again, but will never subject myself to “free day” again. It was a farce!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315053",
"author": "KantPredict",
"timestamp": "2011-01-26T20:14:22",
"content": "I too forgot about this event until the story was posted here. Ah well.I was annoyed, obviously, but last time I simply bought what I wanted free anyway out of my own pocket, having decided I wanted them that much.9 luxeon 3w LEDs, of which 2 still work since last january, having botched all of my soldering :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315483",
"author": "Frogz",
"timestamp": "2011-01-27T06:54:30",
"content": "anyone here who missed it will agree with mescrew you guys, im going home",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315810",
"author": "jeff-o",
"timestamp": "2011-01-27T17:08:32",
"content": "Not a dollar for me. Should have taken my $10 loyalty bucks instead of trying to answer questions. Ah well.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,295.824675
|
||
https://hackaday.com/2011/01/25/radios-without-power-sources/
|
Radios Without Power Sources
|
Mike Szczys
|
[
"Radio Hacks"
] |
[
"am",
"piezo",
"radio",
"receiver"
] |
[Goodhart] is sharing his process for
building a couple different AM radios
. It’s surprising how few components he’s using; the first build is just a germanium diode, some wire, and a piezo earpiece. But it strikes us that both of the radios he gives build instructions for have no power source. We’re also amused by the process of selecting the station. His example uses 770 AM, and requires you to take the wire and place it up in a tree with the two ends about 1216 feet apart. We think there’s something a bit off with the math, but with that much conductor to start with there might be enough induced current for you to actually hear something come out the piezo. We don’t think we’ll be trying this anytime soon, but we’d like to hear comments from those of you who do (or already have).
| 37
| 37
|
[
{
"comment_id": "314123",
"author": "Andrew",
"timestamp": "2011-01-25T18:06:54",
"content": "I heard that if you take an old AM radio and go right next to the station, you can hear it without turning the volume on. But now with on/off and digital what-not, it’s not possible.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314125",
"author": "spiritplumber",
"timestamp": "2011-01-25T18:11:54",
"content": "You can still find crystal radios in some radio shacks, and you definitely can online — they pick up AM and give you an earphone without any power.Now I wonder if I can use that trick to get enough juice to power a fm radio IC…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314126",
"author": "Josh",
"timestamp": "2011-01-25T18:13:08",
"content": "It is called a crystal radio,http://en.wikipedia.org/wiki/Crystal_radio_receiver",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314130",
"author": "Josh",
"timestamp": "2011-01-25T18:17:08",
"content": "Oh you just beat me @spiritplumber",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314132",
"author": "Ivan",
"timestamp": "2011-01-25T18:21:56",
"content": "Well, AM signals can be decoded by simply using a rectifier and a low pass filter. Turns out, he’s using the diode to rectify the signal and the looooong cable works as an inductance (which coincidentally is also used as the antenna).In antenna theory, it’s known that the size of the antenna can be reduced by adding other types of impedances. Such as the capacitor he’s talking about on the last page. Also the capacitor and the inductance will work together as a resonant filter which will perhaps help him to reduce the interference from other stations.Now, FM demodulation would require to actually decode the changes in frequency (very likely to build a PLL), which doesn’t seem quite easy using passive components.It’s a very interesting example. Perhaps he can actually use a Yagi antenna for gain and directivity, which can also improve a little bit on portability.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314137",
"author": "the_truth",
"timestamp": "2011-01-25T18:27:11",
"content": "If you take an old AM radio (tube type) near a transmitter, you will not get anything. If you take an old AM radio (passive, crystal) near a you will hear something. The key to this whole magic is the germanium diode (detector) and the piezo earpiece (high impedance, low voltage).To answer spiritplumber’s question, most likely not. First off, using a standard SINGLE germanium diode will only give you HALF of the possible power of that signal if you are trying to power something. If you are trying to do wireless power extraction, use germanium (lower forward voltage drop than silicon), in a full wave bridge configuration. This will allow you to extract power from both halves of the alternating current waveform generated during transmission. Even at that point, if you don’t live extremely close to a station and you don’t have a massive antenna, you will more than likely not get more than a few microwatts of power using this method.To go back to the roots of these radios, look up “fox hole radios”. These generally used the iron oxide on a razor blade as a semiconductor. Ghetto, but it worked.If you wanted to get really fancy with one, you can use either a half wavelength or a 1/4th wavelength antenna, and use a transistor and battery to amplify the incoming signal.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314141",
"author": "Tim Green",
"timestamp": "2011-01-25T18:38:07",
"content": "Nothing new here.http://www.midnightscience.com/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314146",
"author": "ironring",
"timestamp": "2011-01-25T18:46:21",
"content": "For a strong signal, even a silicon power diode will work. The key with germanium is that it has a much lower voltage drop when forward biased, and thus a much weaker station will be able to bias it, and will be received.I led a bunch of grade-school kids in a radio-building afternoon a few years ago. We used 24 awg wire wound on 6″ sonotube sections (about 30 turns), with a 5mm gap between each turn, and the radio was tuned by selecting different turns with an alligator clip (instead of a variable capacitor). Everyone, even the little grade 1 kid left with a working radio, and a huge smile on his/her face!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314165",
"author": "Sean",
"timestamp": "2011-01-25T19:26:13",
"content": "Sort of thing my grandfather taught me about fortysomething years ago before moving on to single valve trf receivers etc. First one I ever built under his tutelage used a cats whisker as the ‘detector’ as it was known then and indeed used either a long wire antenna strung up the garden or the dipole strung the length of both gardens by way of the roof apex ! (grandmother had the patience of a saint).I have heard a story from several sources that way back a few folks living near the 200KHz, high powered MSF transmitter in Droitwich and the 60KHz vlf transmitter in Rugby UK were ‘leeching’ sufficientpower from them to actually run small appliances. This may have been urban myth but in theory it’s possible so maybe not.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314182",
"author": "The Math",
"timestamp": "2011-01-25T19:53:04",
"content": "Someone with more knowledge in antenna theory can correct me, but the reason he suggests a distance of 1216ft for his simple wire antenna is c/770KhZ is 1277ft. That is the wavelength for a 770Hz centered signal is REALLY LONG. That is why many AM radios don’t try to detect the Electric field, they try and receive the magnetic field with an inductor",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314187",
"author": "dcroy",
"timestamp": "2011-01-25T19:56:59",
"content": "@Ivani came across an fm crystal radio project awhile back, ive been wanting to make one for quite some time now",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314188",
"author": "dcroy",
"timestamp": "2011-01-25T19:57:24",
"content": "http://solomonsmusic.net/FM_CrystalRadio.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314233",
"author": "Faelenor",
"timestamp": "2011-01-25T21:14:20",
"content": "@dcroy: Thanks! That is really interesting, even more than the original article.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314241",
"author": "Scott",
"timestamp": "2011-01-25T21:25:55",
"content": "I’ve built a couple of crystal radios over the years – big antennas help (except for electrical storms). It gets easier that that:http://gizmodo.com/024255/retro-ww2-foxhole-radioThe real problem is that once it works, you’re listening to poor quality AM radio (which is a redundant statement).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314271",
"author": "Quin",
"timestamp": "2011-01-25T21:47:54",
"content": "You guys never built a crystal radio? Not even 20years ago, every transistor bread board project kit came with the parts needed. I never got to run wires up a tree, but tying them to the cold water pipe was enough to listen to the local AM station.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314285",
"author": "Rob Wentworth",
"timestamp": "2011-01-25T22:07:22",
"content": "You can listen to FM with a crystal set as well, using a process called slope-detection. You tune an AM receiver (such as a simple crystal set) to the edge of the FM channel. As the modulated FM carrier moves toward and away from the center of the receiver frequency (tracking the FM-encoded audio), the detected AM signal strength varies due to the Gaussian bell curve bandwidth envelope of the receiver (set by the choice of tuner inductor and capacitor).Here is an FM radio crystal set (and other cool projects):http://www.somerset.net/arm/fm_only_lowtech.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314296",
"author": "Rob Wentworth",
"timestamp": "2011-01-25T22:15:44",
"content": "And let’s not forget the crystal set TRANSMITTER:http://home.earthlink.net/~lenyr/ntype-nr.htmThis homemade (crystal) tunnel diode circuit can oscillate at up to 12 MHz, but a tunnel diode can feed a tuned cavity which can phase lock to an oscillator overtone up to 10 GHz:http://www.tpub.com/content/neets/14183/css/14183_122.htmA totally low-tech (mostly electo-mechanical components) microwave receiver is possible.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314302",
"author": "asheets",
"timestamp": "2011-01-25T22:25:20",
"content": "@Sean — not an urban myth… One of my old circuit manuals (may have even been a Forrest Mims book — can’t remember) has a circuit for running a small DC motor off of a coil, a diode, and a long-wire. It wouldn’t take much to scale something like that up.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314305",
"author": "soriano",
"timestamp": "2011-01-25T22:30:27",
"content": "Yeah its kinda a neat project and it really impresses some people. Crystal radios used to be huge during WWI for the soldiers in the trenches….I made one with about 1000ft. of wire once and it actually worked quite nicely….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314328",
"author": "Fred",
"timestamp": "2011-01-25T22:53:33",
"content": "Built one with my son for a badge he wanted in Cubs (scouts) It’s still in the garage, still works.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314400",
"author": "Rob Wentworth",
"timestamp": "2011-01-25T23:18:27",
"content": "500 KHz to 17 MHz shortwave crystal radio:http://www.antiqueradio.org/econoceanic.htmCrystal radio loudspeaker:http://peeblesoriginals.com/projects/crystal-loudspeaker.phpAnd an FM crystal radio with a true high fidelity FM phase detector discriminator circuit:http://electronbunker.sasktelwebsite.net/FMCrystalSet.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314409",
"author": "Michael",
"timestamp": "2011-01-25T23:26:29",
"content": "I had a cristal-radio kit as a small child.it was only a coil, a diode, a adjustable condensator and an piezo earplugi could hear about 2-4 radio stations just with a 30cm antenna (2. floor) and a ground wire on the heatpipe",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314429",
"author": "Rob Wentworth",
"timestamp": "2011-01-25T23:40:51",
"content": "Audio recorded from the above FM phase detector crystal set (scanning across the FM band):http://electronbunker.sasktelwebsite.net/DL/FMtest005c.mp3",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314486",
"author": "Jake",
"timestamp": "2011-01-26T00:56:35",
"content": "“We think there’s something a bit off with the math…”Really? You think there’s something off with the math? Did you ever take a basic physics class?Wow, HAD editor fail. You should delete that sentence, it makes you guys look like a bunch of uninformed idiots. How long have you been claiming to be “hackers”?Lol.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314521",
"author": "Rob Wentworth",
"timestamp": "2011-01-26T01:40:08",
"content": "Regarding using a magnetic field antenna versus a really-long electric field antenna, how about a virtual field antenna?http://www.am-va.com/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314545",
"author": "Rob Wentworth",
"timestamp": "2011-01-26T02:10:43",
"content": "Ouch! They got me! The am-va.com link is an April fool’s joke. Just read the author’s names backwards.However, I read something awhile back about creating a very long virtual receive antenna by also transmitting into the antenna, which was especially effective of ELF communications. It seemed logical and reasonable at the time when I read it several years ago. Google is not helping me find that again…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314618",
"author": "Charles",
"timestamp": "2011-01-26T03:54:25",
"content": "HAD doesn’t know what a crystal radio is….Tisk tisk",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314810",
"author": "Max",
"timestamp": "2011-01-26T10:02:46",
"content": "I did actually play with a diode/speaker receiver back in the day. To be fair, I think it was indeed a germanium one (hey, back then even transistors were mostly germanium :P), and the speaker was an electromagnetic, metal-membrane one (lots of turns in the coil, I guess it really was higher-impedance). You’d use a water pipe as a ground, a few feet of wire as the antenna, and the local MW AM came in just fine. Everybody in the class was awestruck when we tested it at school during recess… :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314913",
"author": "David",
"timestamp": "2011-01-26T15:17:28",
"content": "This is nothing new. The Operator’s for the Military build entire comm array’s in this fashion. Most of the time they can build the thing in plain sight, and you won’t even realize what it is until they point it out to you. How do you thing they operate in Afghanistan? The only time they need power is to transmit, and they have solar panel’s for that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314915",
"author": "sean, not the other sean, lets say: sean2",
"timestamp": "2011-01-26T15:25:03",
"content": "Another twist… instead of using a proper diode, you can go commando with a foxhole radio:http://www.all-science-fair-projects.com/science_fair_projects/29/358/19eb264e3a812225b56288b7c1c0faa3.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314921",
"author": "HackerK",
"timestamp": "2011-01-26T15:54:11",
"content": "“place it up in a tree with the two ends about 1216 feet apart”.. just make sure there is no lighting activities in the area first…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314943",
"author": "iHME",
"timestamp": "2011-01-26T16:48:18",
"content": "@DavidWell designed and shielded radios don’t radiate their LO or IF frequency. And the idea of using a crystal set for military operations is quite amusing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315215",
"author": "Sean",
"timestamp": "2011-01-26T23:59:27",
"content": "@asheetsOh I know it’s technically feasible, I’ve been a radio amateur for longer than I care to remember but just because it’s possible doesn’t mean anyone was doing it hence my urban myth caveat. The story even appears online such as here –http://webcache.googleusercontent.com/search?q=cache:LkN8BA6PHsoJ:archive.chipcenter.com/wireless/ed030.html+using+rf+power+from+droitwich&cd=14&hl=en&ct=clnk– but I’ve never actually seen hard evidence such as the claimed court case details.Sean.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315465",
"author": "Dan L",
"timestamp": "2011-01-27T06:32:30",
"content": "Schottky diodes, these days.I’ve got some galena potted in Wood’s metal in brass cups around here somewhere.You don’t need a full-wave antenna, though.Quarter wave will do just fine.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316536",
"author": "Dark Sakul",
"timestamp": "2011-01-28T06:59:37",
"content": "Oh a crystal Radio, I had build one at the age of 8 using a home electronics lab kit from Radio Shack.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316971",
"author": "melvin",
"timestamp": "2011-01-28T17:40:30",
"content": "I used the finger stop on the old rotary phones as the antenna for the crystal radios I made as a kid.Worked ok but I don’t know why. The metal finger stop was not connected to anything inside the phone. Maybe it had enough area to form a capacitance with the line wires?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "325670",
"author": "tesla",
"timestamp": "2011-02-07T04:07:31",
"content": "the antenna you spoke of that received longer transmissions was actually a “capacitive” antenna. reference the “b3cks” beer can antenna on google which is a simple make and works better with lower frequencies. the principles date back to N. Tesla and his original patents on wireless electricity. Tesla used a metal orb at the top of a vacuum sealed tube with a insulated wire enclosed. this allowed for no interference from the “medium”. He also insisted on a good ground, according to him the radio waves propagated more so through the ground then the air however he also showed how “hertzian” waves are not the best information carriers and one should use longitudinal waves for their supurb carier ability and distance. legend has it he transmitted around the world and the signal bounced off itself and came back to him. his colorado spring notes which cover high frequency radio currents research is a good read.if tesla was still here he would laugh at the battery powered radios for theres just no need.P.S. Anyone who thinks marconi is the father of wireless is sadly mistaken.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,295.752443
|
||
https://hackaday.com/2011/01/25/jeep-uter-adds-push-button-control-to-your-vehicle/
|
Jeep-uter Adds Push Button Control To Your Vehicle
|
Mike Szczys
|
[
"Transportation Hacks"
] |
[
"arduino",
"code",
"computer",
"dash",
"ignition",
"Jeep",
"wrangler"
] |
[Ed Zarick] built
a module to control his vehicle
which he calls the Jeeputer. The name’s a mash-up of Jeep and Computer; the device itself is a combination of Arduino, character LCD, and a collection of shift registers and relays for interfacing. Watch the video after the break to see what this can do. We were surprised in the beginning when he says that all he has left to do is remove the steering wheel lock and he’ll be able to drive using the interface, but we think he means
type in a code to unlock the ignition
, not
remote control for his car
. He then goes on to demonstrate garage door control, power cycling for CB radio, GPS, 110V power inverter, vehicle light control, and much more. This must be the most feature packed car computer we’ve seen so far.
[youtube=http://www.youtube.com/watch?v=DrF22zAU8s4&w=470]
| 24
| 23
|
[
{
"comment_id": "314101",
"author": "Justme",
"timestamp": "2011-01-25T17:18:22",
"content": "I am surprised that he is using mechanical relays in a 4 wheel drive vehicle. The jarring could cause the relays to fail. SS relays would be a better choice and last longer.Also it would be easy to jump start the Jeep by bypassing the computer and without a steering lock (yes I know it can be easily defeated).All in all a great project that will get better with time!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314103",
"author": "chango",
"timestamp": "2011-01-25T17:20:44",
"content": "“The name’s a mash-up of Jeep and Computer”Thanks for clarifying. I figured it was a mash-up of Jeep and Uterus.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314111",
"author": "nonermouse",
"timestamp": "2011-01-25T17:21:42",
"content": "Very cool, but it takes some simplicity away from functions that need to be simple. “Hey, quick turn on the lights!” Hold on, let me scroll to page five…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314114",
"author": "Bill",
"timestamp": "2011-01-25T17:31:37",
"content": "Good job interfacing with your Car’s hardware. Nice build.But C’MON! Voice activated human interface! This is one more upgrade away from being Star-trek computer potential. No push buttons and scrolling.“Jeeputer, lights!” … “Jeeputer, Open Garage”Not to mention the whole hands-free == safer driving aspect.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314121",
"author": "Brian",
"timestamp": "2011-01-25T17:58:56",
"content": "My Jeep had a similar feature, except instead of a Jeeputer I had a switches, except for the fog lights, which required opening the hood and wrapping a wire around the battery post. Cool project though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314134",
"author": "djrussell",
"timestamp": "2011-01-25T18:24:39",
"content": "lol @ chango. :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314136",
"author": "alan",
"timestamp": "2011-01-25T18:26:41",
"content": "you have some crazy ways of adding things to your life. like your kitchen soda machine.not sure if i would ever put that ugly of a thing into my kitchen….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314142",
"author": "M4CGYV3R",
"timestamp": "2011-01-25T18:41:55",
"content": "I hate me some arduino, but you have to be a whole different sort of moron to give it any control whatsoever over your vehicle while in motion.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314159",
"author": "Osgeld",
"timestamp": "2011-01-25T19:21:57",
"content": "yes cause a pic would have been absolutely flawless M4CGYV3R",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "314211",
"author": "M4CGYV3R",
"timestamp": "2011-01-25T20:38:19",
"content": "It would be an improvement, but I’m still not driving it.",
"parent_id": "314159",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "314163",
"author": "Pouncer",
"timestamp": "2011-01-25T19:23:29",
"content": "Nice build, but I think I have to agree with nonermouse.Lol Chango!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314179",
"author": "C.Gross",
"timestamp": "2011-01-25T19:48:05",
"content": "@JustmeMechanical relays have been used since CJ’s at LEAST, and guess what? A lot of them are still going strong. My 93 still has no issues with any of my relays and they’re used for main system components.Also, this guy maybe a mall crawler more than anything.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314207",
"author": "EricJeep",
"timestamp": "2011-01-25T20:30:48",
"content": "When he means steering wheel lock, He is correct. The steering wheel locks (if a manual Trans) so somebody cannot just push/tow your car away from a parking lot, without elevating the front wheels. So one can also hotwire the jeep and get the ignition on, but will not be able to turn the wheel without unlocking steering wheel. And in Jeeps columns you cannot just break the key hole, a rod is jammed into the steering wheel and does not allow the steering column to spin, unless the pin is manually removed which can only be accomplished with the key-ignition switch.And nice hack but too complicated for me, but nice!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314371",
"author": "LazyMegaMan",
"timestamp": "2011-01-25T23:03:47",
"content": "@EricJeepYou are correct, sir. It’s the same with my SUV. I’ve almost the exact same features lined up as this Jeep here (with the exception of the screen, which will be an actual LCD controlled by a small computer), and the only hurdle right now is getting the steering wheel lock removed. As you’d expect, there’s not exactly a how-to for breaking a security feature implemented inside almost every car as a last resort…The difficult part is figuring out where on the column the lock actually is. And then, getting to it is usually quite difficult. Mine seems to be built into the key column assembly which is, of course, bolted around the column itself. I COULD just snap it right off and keep the ignition switch wiring intact, but I’d like to keep the key-based functionality in case things go wrong.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314411",
"author": "Glenn",
"timestamp": "2011-01-25T23:27:01",
"content": "It’s a Jeep thing!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314415",
"author": "Taylor Alexander",
"timestamp": "2011-01-25T23:30:02",
"content": "One way I came up with to easily disable steering-wheel lock in a reversible way is to, permanently leave a key in the ignition, but un-plug the electrical switching portion of it. To make it no so obvious, you could grind off most of the key head and then make a plastic or rubber cover that goes over it, so the ignition just looks blanked out.Obviously if someone is keen, they can plug your ignition switch back in and steal your car, but you could take measures to make that not so simple.Anyway, I had considered that when I wanted to do push-button ignition on my 3000GT, but I never got around to it!-Taylor",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314485",
"author": "Jake",
"timestamp": "2011-01-26T00:54:26",
"content": "This jeep looks new enough that all of the body functions (ignition, headlights, everything) are controlled by the BCM. All of these tasks could be completed by simply providing the BCM with the proper commands. Using all of these relays and messy wiring is completely unneccesary!If this involved interfacing with the on-board chrysler BCM, it could be called a “hack”. In its current state, it’s just a reeeeeeallllly time consuming project.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314659",
"author": "m1ndtr1p",
"timestamp": "2011-01-26T04:28:48",
"content": "@Jake“If this involved interfacing with the on-board chrysler BCM, it could be called a “hack”. In its current state, it’s just a reeeeeeallllly time consuming project.”So interfacing with a pre-installed component is considered a hack to you, yet installing everything manually/building a project from the ground up with micro controllers, LCDs, LEDs, switches etc… Isn’t? Me thinks you need to look up the definition of hacking.This is a hack, moreso than just interfacing with an OEM part.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314663",
"author": "EricJeep",
"timestamp": "2011-01-26T04:37:14",
"content": "@LazyMegaManA quick solution (relative) is to remove your steering wheel, and watch for your solid rod. This rod usually fits into a sproketed ring. If you can remove this ring or even the rod and spring assembly then reattach wheel )as well as all bolts and wires for horn and what nots.If you car is too modern, then this task is too hard and sorry, :)But if you can do what you were claiming with the screen and all then this shouldn’t be too hard just more mechanical and less code.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314669",
"author": "Bill D. Williams",
"timestamp": "2011-01-26T04:43:44",
"content": "A.) Engineers need to stay away from user interface designB.) With out the steering wheel lock the car is not safe to park on a hill. Remember, you need to turn your wheels into the curb. The wheel need to lock.C>) I’ll let it pass cause any hack that has TWO arduinos on it is better than any PIC project. ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314807",
"author": "error404",
"timestamp": "2011-01-26T09:56:27",
"content": "Nice build. All that wiring integration is the kind of stuff that gives me nightmares. I don’t even like tapping 12V in my car, it’s so much work getting at anything behind the dash. Props for dedication.Also “The other is actually turnign power on to the shift registers. Reason for this is when the arduino boots up, the registers all go high. This is an issue when you have a starter hooked up to them.”This is (one reason) why your shift registers have an async reset pin. Pull it low with a resistor, and connect to the AVR (you can gang them all together). The AVR’s outputs start in high-Z mode, so the register’s outputs will remain low until you lift the reset in your code (after loading proper values).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314873",
"author": "Jake",
"timestamp": "2011-01-26T13:29:19",
"content": "@m1ndtr1pYou obviously have no idea what I am talking about. Such an interface would require a good deal of design work/reverse engineering (say, sniffing with a logic analyzer, etc) as there is very little documentation out there on doing such a thing. The neat thing would be that if someone designed such an interface, that interface would apply to many chrysler vehicles. Then, a bunch of other people who read HaD could copy it verbatim and call it their own work!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316107",
"author": "bdav",
"timestamp": "2011-01-27T23:56:10",
"content": "@Jake – I’m sure there must be such interfaces for Chryslers. I know for BMWs certainly the iBus was well exploited – there was a guy making USB and Serial to iBus interfaces, which you could control pretty much anything over.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "2562960",
"author": "Cliff",
"timestamp": "2015-05-11T17:11:03",
"content": "Ah fascinating! find out something new every single day.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,296.17509
|
||
https://hackaday.com/2011/01/25/vr-now-with-more-kinect-wiimote-and-vuzix/
|
VR! Now With More Kinect, Wiimote, And Vuzix
|
Caleb Kraft
|
[
"Kinect hacks",
"Nintendo Wii Hacks",
"Xbox Hacks"
] |
[
"Kinect",
"virtual reality",
"vr",
"wiimote"
] |
Those of us that remember when you could actually go to a mall and play on a VR game machine, tend to remember it fondly. What happened? The computing horsepower has grown so much, our graphics now days are simply stunning, yet there’s been no major VR revival. Yeah, those helmets were huge and gave you a headache, but it was worth it. With the 3d positioning abilities of the latest game crazes, the Wiimote and the Kinect, [Nao_u] is finally taking this where we all knew it
should have gone
(
google translated
). Well, maybe we would have had less creepy anime faces flying around squirting ink, but the basics are there. He has created a VR system utilizing the Wiimote for his hand position, a Vuzix display for head positioning, and the kinect for body tracking. Even with the creepy flying heads I want to play it, especially after seeing him physically ducking behind boxes in the video after the break. Long live VR!
[youtube=http://www.youtube.com/watch?v=ZS33cENjyRs&w=470]
[via
Engadget
]
| 24
| 24
|
[
{
"comment_id": "314062",
"author": "Moshi",
"timestamp": "2011-01-25T16:11:52",
"content": "Miku invades Hackaday at last.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314063",
"author": "walt",
"timestamp": "2011-01-25T16:11:52",
"content": "VR started out strong and was almost the next big thing in the 90s, then it got stomped out so the fat cats could sell big screen TVs. it’s about time VR makes a comeback.1st!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314067",
"author": "Me",
"timestamp": "2011-01-25T16:15:13",
"content": "That game is so japanese. Totally kawaii.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314094",
"author": "Reggie",
"timestamp": "2011-01-25T16:40:44",
"content": "fantastic merging of technology, so who finally wins in the console control wars? THE PC, ahahahaha :D@ walt, It does seem a bit poor that manufacturers can squeeze everything up and down in size to whatever sizes they want for mobile handsets, pico-projectors and 70″ TVs but can’t make a decently priced, decent resolution set of goggles. I’d much rather have some goggles than a power sucking TV on the wall.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314095",
"author": "Jack",
"timestamp": "2011-01-25T16:43:32",
"content": "holy crap that looks fun",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314096",
"author": "bty",
"timestamp": "2011-01-25T16:56:45",
"content": "awesome!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314097",
"author": "Koolguy007",
"timestamp": "2011-01-25T16:57:10",
"content": "About damn time… Quick someone give this guy some money so we can have our VR arcade games back.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314098",
"author": "vin",
"timestamp": "2011-01-25T17:03:33",
"content": "i am not sure what part of body tracking is used in the game, just jump and duck… i would love this thing to go full blown with a setup of omni-directional tread mill to walk on, and a bunch of prop cables to lift you when you make those gigantic jumps.now where can i get some money to setup all that…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314128",
"author": "Maave",
"timestamp": "2011-01-25T18:14:23",
"content": "The Vocaloid made it twice as awesome.@Reggie: I’m waiting for clear-glass AR goggles myself. Samsung and Vuzix each have designs based on holographic projection, although Samsung’s seems more developed (I can’t freaking find Samsung’s Engadget article anymore).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314133",
"author": "andrew",
"timestamp": "2011-01-25T18:23:20",
"content": "Wow, he spent a lot of time on the game itself. Impressive",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314147",
"author": "whocouldshebe",
"timestamp": "2011-01-25T18:55:11",
"content": "YES! YES! PLEASE BRING VR BACK!!!I HAVEN’T PLAYED A DECENT GAME SINCE 1996!!!(well flight sim’s with the car tires that spin you 360 degrees upside down sideways etc are pretty fun. I like to play the whole time upside down then flip back over right before I land, but can’t afford one for the house yet, so bring VR back.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314149",
"author": "M4CGYV3R",
"timestamp": "2011-01-25T19:00:16",
"content": "OMG Is he playing as Hatsune Miku? I could only gather form the quick glimpse of shadow, and the music, and the totally KYAWAII anime faces, but it’s awesome whatever it is.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314193",
"author": "Colecago",
"timestamp": "2011-01-25T20:05:08",
"content": "@M4CGYV3RIndeed he is. This post shows some video of him walking around and looking at himself in the vr world.http://www.youtube.com/watch?v=WDlvn3voblQ&feature=player_embedded",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314232",
"author": "Rob Wentworth",
"timestamp": "2011-01-25T21:14:09",
"content": "Wow! He’s been busy:http://www.youtube.com/watch?v=JQvLt7DQhaI",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314234",
"author": "Rob Wentworth",
"timestamp": "2011-01-25T21:17:13",
"content": "And with leg control too:http://www.youtube.com/watch?v=bQREhd9iT38This kind of actor control in a VR game is just too cool! ;-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314236",
"author": "MrBalloonHands",
"timestamp": "2011-01-25T21:23:51",
"content": "I hope this opens some new sort of VR series of games on pc.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314301",
"author": "Moshi",
"timestamp": "2011-01-25T22:21:41",
"content": "@Rob WentworthActually, those two videos are by different people who used the same 3D program. Open-source development at its best.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314502",
"author": "Deltib",
"timestamp": "2011-01-26T01:12:35",
"content": "That looks like the Miku model from the Innocent PV, which happens to be the song he has her dancing to at the end.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314616",
"author": "Mikey",
"timestamp": "2011-01-26T03:51:44",
"content": "Neat technologically, but gamewise it stinks. Towards the end when there are fewer bigger bad guys, he needs to have lots of little ones providing them support. He should probably have his own allies and what nots as well along with various offensive options (weapons, power-ups, etc…) Also wtf is up with paint balls? >.<",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314688",
"author": "dbear",
"timestamp": "2011-01-26T05:38:18",
"content": "Wasn’t there something about VR googles causing various health problems such as degrading real world reflexes, Strabismus, headaches and eyestrain?In that case the reason we don’t have cool VS systems is the same reason we are unlikely to have cars that drive themselves anytime soon — The bountiful crop of product liability lawyers our country produces every year.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314689",
"author": "dbear",
"timestamp": "2011-01-26T05:39:26",
"content": "oops I mean VR systems. Damn typos.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314759",
"author": "mattsyB",
"timestamp": "2011-01-26T07:50:17",
"content": "anyone else go the urge to want to play COD with this setup?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315911",
"author": "david",
"timestamp": "2011-01-27T20:33:10",
"content": "is he going to sell this?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "329631",
"author": "Casey Melton",
"timestamp": "2011-02-11T00:38:05",
"content": "could you image a version of the colossus with this technology.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,295.880805
|
||
https://hackaday.com/2011/01/25/refurbishing-a-refrigerator-for-fermenting/
|
Refurbishing A Refrigerator For Fermenting
|
Caleb Kraft
|
[
"cooking hacks",
"home hacks"
] |
[
"beer",
"bread",
"cooking",
"ferment",
"temperature"
] |
[Mikey Sklar] wrote in to show us how he
refurbished a neighbors useless refrigerator as a fermentation chamber
. [Mikey] is a fan of making breads, kemchi, yogurt, and tempeh. To make these, it helps to have a completely controlled temperature for them to ferment in. [Mikey] developed a
temp controller
for this in the past, but had to either build a control box or use a giant chest freezer. This is not optimal for limited space, such as a kitchen. He got lucky when a neighbor tossed a wine cooler into the trash. These little coolers are perfectly sized for a kitchen and even have a glass front so you can keep an eye on what is going on inside without having to open it and effect your temps. [Mikey] ripped it open, replaced the peltier cooler with a large heat lamp and his temp controller. Since he was making yogurt with this one, he needed only to heat it. The final product turned out pretty effective.
| 12
| 12
|
[
{
"comment_id": "314032",
"author": "Tom Hargrave",
"timestamp": "2011-01-25T15:04:17",
"content": "You can find instructions for converting several types of refridgerators and freezers on this site.http://www.kegkits.com",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314039",
"author": "tgtomm",
"timestamp": "2011-01-25T15:26:02",
"content": "Couldn’t he have just reversed the peltier cooler so that the hot side was inside the fridge? He could even have made it reversible so that it can still function as a cooler",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314054",
"author": "Andrew",
"timestamp": "2011-01-25T15:53:53",
"content": "It’s kimchi, but that’s cool. :) I would have gone for a humidor myself.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314056",
"author": "walt",
"timestamp": "2011-01-25T15:59:54",
"content": "instructabliss link please.FU instructables!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314057",
"author": "osgeld",
"timestamp": "2011-01-25T16:00:16",
"content": "those chillers barley cool things down (hince chiller) I would not think flipping it around would be warm enough",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314090",
"author": "Mikey Sklar",
"timestamp": "2011-01-25T16:35:10",
"content": "@tgtomm The peltiers inside these baby fridges are very weak. They take over 24 hours just to reach 50F and there are many reports of the the devices failing in less than 3 months. I’m not sure if the failure is due to the undersized peltier over heating or the lousy quality driver circuit. Regardless the fridge I found in this post was already dead. I would have loved to have used it for heating and cooling it was still functional.Any ideas why this solid state technology isn’t more robust?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314091",
"author": "Daid",
"timestamp": "2011-01-25T16:40:00",
"content": "@walt: Don’t be that lazy.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314099",
"author": "Scott",
"timestamp": "2011-01-25T17:06:10",
"content": "I do wonder how controlled a temperature this is. Fermentation generates a LOT of heat, A heat lamp will get you into the ideal temp range for that yeast, but what protects this against “runaway fermentation temperatures?”. Fermentation can actually raise the temps enough that the yeast metabolism goes too fast. Consider adding a temperature logger to see how far things go even after you kill the lamp.Good job on your recycling, and saving one more piece of Haier junk from entering our landfills. (I can’t say that this -is- a Haier model, but they are the #1 vendor of “disposable” wine fridges. Based on the Amazon and Consumerist reviews, you really want to avoid this brand).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314124",
"author": "tgtomm",
"timestamp": "2011-01-25T18:10:26",
"content": "If the original peltier is no good then you could try adding your own. Powerful ones don’t cost much and could potentially give you better heat regulation. You would only need an H-bridge to drive it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314154",
"author": "eric",
"timestamp": "2011-01-25T19:07:02",
"content": "“effect” should be “affect”.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314420",
"author": "Trollicus",
"timestamp": "2011-01-25T23:33:05",
"content": "Actually the peltier makes for a very efficient heater. The problem with cooling is that the device itself is creating a lot of heat, all that power your pumping into it has to go somewhere so the hot side includes both the transfered heat from the cold side and the heat from the power being fed to the device. As a heating element it will give you more BTU’s for the same amount of energy as a simple resistive element. I have a portable peltier heater/cooler as a cooler it will keep your drink “cool” as a heater it will keep your food HOT.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314626",
"author": "ibedazzled",
"timestamp": "2011-01-26T04:04:37",
"content": "mmmmmmm. i love tempeh.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,296.11548
|
||
https://hackaday.com/2011/01/25/555-design-contest-win-1500-in-prizes/
|
555 Design Contest, Win $1500+ In Prizes!
|
James Munns
|
[
"contests"
] |
[
"555",
"contest",
"Ellsworth",
"Jeri",
"prize"
] |
Sure, microcontrollers are useful, easy to apply, and ubiquitous, but where is the fun in the easy route? Well, for those of you out there with a little imagination and a 555 timer sitting around, there could be
rewards in store
. Brought to you by such famous personalities as
Jeri Ellsworth
and
Chris Gammell
, the 555 contest has prizes and awards for a number of different categories, such as over the top designs as well as awards for most minimalistic. To top it all off, they are even selling T-shirts to benefit engineering education charities.
The craziest (and possibly coolest) part of the entire contest is that the it has all been put together by the hacking community, with no exclusive sponsorship deals or payment to the organizers being accepted. In the spirit of giving, we will be adding some Hack a Day merch to the swag pile, so keep an eye out for the skull and wrenches. Currently the prize list includes a pair of Beagle Boards, a custom hacked Commodore 64 Joystick from Jeri, as well as a number of other project parts and lots more. The sponsorship list is still growing, so all of our information is tentative (and exclusive!), but be sure to check out the complete list so far after the break.
Here is the tentative list of prizes. Subject to change.
Eagle Pro (Layout+Schematic+Autorouter) from Element14 and Cadsoft
Free shipping on 555’s with no minimum from Element14
Hacked C64 Joystick from me
20sq in of PCB from @laen and DorkbotsPDX PCB pool
OLED displays from Savage Circuits
Maker T-Shirts from MakerTees.com
2
Beagle Boards
Hackaday stickers and shirts
Altium FPGA Nanoboard
Extech’s “five for five” free pen meters to random contestants
Extech’s Multiscope
SumoBot Competition Kit
from Parallax Inc and Digikey
Oomlout
Arduino Kit
Special prizes:
40 Text LCD Modules from EEvblog for the best Aussie project
To be determined prize for the best under 18yrs old entry. This will include adult/child entries.
| 35
| 35
|
[
{
"comment_id": "314010",
"author": "Dino",
"timestamp": "2011-01-25T13:15:37",
"content": "I love the timing on this… pun intended. I just built a 555 based project! :) Looking forward to seeing what other projects get entered.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314011",
"author": "jake",
"timestamp": "2011-01-25T13:22:52",
"content": "sounds cool. where and when do we submit?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314015",
"author": "jake",
"timestamp": "2011-01-25T13:32:53",
"content": "@ myself, nevermind, i clicked the link :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314018",
"author": "smoker_dave",
"timestamp": "2011-01-25T13:53:49",
"content": "I have been reading about this for a few weeks on Twitter. It looks really exciting. If you don’t follow Jeri Ellsworth on there already then I would you might like to add her.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314020",
"author": "jim",
"timestamp": "2011-01-25T14:07:07",
"content": "First person to make a full-on 70s synth from 1000s of these wins my respect.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314034",
"author": "Jake",
"timestamp": "2011-01-25T15:19:23",
"content": "I love the claim that it has been put together by the “hacking community”. This community knows virtually nothing of real hacking. It’s a bunch of people, copying each others ideas – Ideas that were concieved by actual hackers, a long time ago.Yes, there are a few really creative things that pop up here and there that might actually qualify as “hacks”, but a majority of the stuff on this (and similar) sites is comprised of unoriginal ideas and copied instructions for someone else to copy again.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314037",
"author": "jeff-o",
"timestamp": "2011-01-25T15:22:58",
"content": "@Jake: Looking forward to seeing your completely original, never-before-seen, completely awesome and absolutely worthy entry, Jake!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314042",
"author": "chris",
"timestamp": "2011-01-25T15:33:30",
"content": "Insert obligatory comment about only having “one shot” to win.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314048",
"author": "vespine",
"timestamp": "2011-01-25T15:36:34",
"content": "I love people who come to websites to trash talk the very website they are on. *facepalm. Holy crap it should be the new definition of dumb shit. No one asked you to be here genius, go eat a shit if you don’t like it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314049",
"author": "HackerK",
"timestamp": "2011-01-25T15:48:48",
"content": "Not cool when I visit the site was greeted by “Error establishing a database connection” :(But yeah 555 is the first IC I learn. Thanks Dad!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314058",
"author": "Jakezilla",
"timestamp": "2011-01-25T16:05:40",
"content": "It says “a little imagination and a 555 timer sitting around” are we limited to a single 555? There are a few good ideas I can think of with a single 555, but allowing more opens up a great number of possibilities.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314061",
"author": "Jeri Ellsworth",
"timestamp": "2011-01-25T16:10:34",
"content": "You can use as many 555’s as you like. We structured the rules and divisions to cover as many design as possible. Art for example does not focus as much on the circuit as some of the others.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314066",
"author": "Gdogg",
"timestamp": "2011-01-25T16:14:45",
"content": "@Jake – Awww… you gonna cry?srsly though I hate 555 timers. I’m a seng so I stubbornly try to do everything in sw.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314092",
"author": "1000100 1000001 1010110 1000101",
"timestamp": "2011-01-25T16:40:35",
"content": "@chris and DinoI laughed…I have no life.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314208",
"author": "Steven S.",
"timestamp": "2011-01-25T20:31:32",
"content": "Jeri, Can’t wait to see what people come up with(hopefully you’ll have a place where we can go see the ideas after the contest is over). I have a drawer full of 555s that I’ve had for years and would love to make something fun with them. Unfortunately I cant design myself but, as an electronics manufacturing engineer, I can build stuff. Looking forward to seeing the results!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314225",
"author": "Matt",
"timestamp": "2011-01-25T21:02:31",
"content": "Bit off topic but still 555s. Can anyone point me to a good simple design for a fence energiser using 555/ignition coil…Have tried chemelecs but coil side diode keeps popping..http://www3.telus.net/chemelec/Projects/Car-Coil/Car-Coil-1.pngtoo uneducated to figure out why….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314235",
"author": "Erik Johnson",
"timestamp": "2011-01-25T21:17:37",
"content": "A project of mine uses 555s for control and EVERYONE asks me if its an ardino running the projects. That just goes to show everyone only uses them for blinking lights (ardunos, I mean). Although I only use two in my project and they are far outnumbered by the other components, they are pivotal to its function and no mcu anywhere.I once had a guy proclaim to me “GAH! A 555? There is too much math and formulation to bother with those beasties!” Me? I just grabbed a couple random resistors and the one electrolytic cap I had handy to build it, all I needed was a relatively quick timing signal, I don’t care about the precision of the 1/0 timings. In fact the project looks best with skewed/unpredictable timings!Srsly, if you don’t care about precision timing, 555s are cake.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314258",
"author": "Th3_uN1Qu3",
"timestamp": "2011-01-25T21:41:54",
"content": "I’m in. Have to polish my PCB design skills a bit, but i should have a workable project till March.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314278",
"author": "Jeri Ellsworth",
"timestamp": "2011-01-25T21:52:55",
"content": "By the way. Our running total for prizes is over $3700 now. A lot of companies are excited to be part of this.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314293",
"author": "Th3_uN1Qu3",
"timestamp": "2011-01-25T22:15:00",
"content": "Well let’s just hope there be no problem with sending a prize to Romania. :P If i get my act together my project will be done in a couple weeks – i’ve done it before only not to the degree of refinement needed to enter such a contest.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314303",
"author": "bogdan",
"timestamp": "2011-01-25T22:28:41",
"content": "I’m in!Just one question though: who will own the intellectual property of the circuit if it is a new one?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314353",
"author": "Jeri Ellsworth",
"timestamp": "2011-01-25T22:55:38",
"content": "We are making no claims on intellectual property. This is for fun. Chris and I are not looking to profit in any way. The prizes are handled by the companies donating them.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314354",
"author": "Chris Gammell",
"timestamp": "2011-01-25T22:55:52",
"content": "Hey Bogdan,We’re not planning on claiming rights on any circuits or designs, but we will try to publish results on our page so everyone has a central place to see them. I’d guess you’ll probably see some of the entries pop up on Hackaday and elsewhere, but only because we’re expecting some seriously good entires. Because we’re trying to be open about everything, we don’t want to just list the winners…we want to show WHY someone won. So if you think you have an idea you want to keep to yourself, it might not be the best forum for it. However, we hope you do, we’d love to show off your design skill and whatever you come up with. Good luck!~Chris",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314372",
"author": "KC8KVA",
"timestamp": "2011-01-25T23:03:55",
"content": "Got the breadboard ready, power supply set to 5V…now to get a few parts out of the bin, and a building I will go. “The 555…analog in, digital out…or is it?” Have I got a project…muhahah",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314660",
"author": "zippy",
"timestamp": "2011-01-26T04:33:35",
"content": "How about if I make a working Arduino out of 555 timers and make it blink a led very seductively",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314683",
"author": "noah vawter",
"timestamp": "2011-01-26T05:24:59",
"content": "What about using the 551, low voltage. Is that allowed?-Noah",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314722",
"author": "Jeri Ellsworth",
"timestamp": "2011-01-26T06:37:02",
"content": "The low voltage CMOS version are allowed as long as they’re functionally the same.You can use pretty much anything you want in the designs, but scoring will be penalized if the 555 is deemed not the main element.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314933",
"author": "Fallen",
"timestamp": "2011-01-26T16:35:43",
"content": "“You’ve got 8 pins…and one shot”LOL!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315239",
"author": "Dave Jones",
"timestamp": "2011-01-27T00:28:59",
"content": "CORRECTION:The “Aussie Prize” will be about 80 x 16×2 LCD display modules, not 40. A “lifetime” supply surely!And yes, it’s only for Aussie entrants, judged by me. So if you are the only Aussie entrant, you win by default!Dave.EEVblog",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315241",
"author": "Dave Jones",
"timestamp": "2011-01-27T00:31:02",
"content": "I do wonder if I’m allowed to enter?…Excluding the Aussie prize of course.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315803",
"author": "leniu",
"timestamp": "2011-01-27T16:51:29",
"content": "How to add a project 555?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "316142",
"author": "Laurence",
"timestamp": "2011-01-28T00:42:48",
"content": "Hi,The free 555 shipping as a prize from Element14?? Surely that’s during the contest – or is it actually a lifetime supply of shipping for 555s xDDefinitely having a go though – LOVE the contest!!!Laurence",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "320546",
"author": "Whatnot",
"timestamp": "2011-02-01T17:57:12",
"content": "@Erik Johnson Just tell people it’s an “arduino cinque triple” :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "345791",
"author": "Myke",
"timestamp": "2011-03-01T23:54:22",
"content": "@Erik Johnson: For simple tasks like blinking LEDs I prefer the Tiny series of Atmel microcontrollers. They require a much smaller part count to make them work (decoupling cap and an optional reset pullup).Plus, Tiny4 for example is really small (SOT23-6 package).The downsides are the input voltage and the output current.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "3902899",
"author": "sburlappp",
"timestamp": "2017-08-14T19:12:01",
"content": "The original website is long gone, but the Wayback Machine remembers:http://wayback.archive.org/web/20121021113317/http://www.555contest.com/",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,296.244548
|
||
https://hackaday.com/2011/01/24/avr-the-facts-about-flash-memory/
|
AVR: The Facts About Flash Memory
|
Mike Szczys
|
[
"Microcontrollers"
] |
[
"atmega328",
"AVR",
"flash memory"
] |
Here’s a nice little
discussion about reading and writing AVR flash memory
that [Windel] put together. He’s using an In System Programmer to read the flash memory from an ATmega328 using AVRdude, the programming software which we used in
our AVR Programming Tutorials
. He covers the particulars of the commands, how this might be useful, and finishes up with the gotcha’s involved in reading back code from the chip. We recently tried this out with
that LED light bulb
but were unsuccessful because the lock bits on the ATtiny13 chip had been set in order to protect the firmware from our prying eyes. Hopefully you’ll have more luck with these methods.
| 13
| 13
|
[
{
"comment_id": "313644",
"author": "noah vawter",
"timestamp": "2011-01-25T02:03:29",
"content": "Hey speaking of AVR flash… does anyone have experience writing to the flash of e.g. atemga32 from application memory? apparently, you have to make a function to write, save it in the bootloader portion of memory, then call to it from your application. Does anyone have any examples of this? It will help a great deal here. Thank you.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313658",
"author": "bluewraith",
"timestamp": "2011-01-25T02:21:14",
"content": "Why is this post not showing up on the front page anymore?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313832",
"author": "dioxide",
"timestamp": "2011-01-25T07:03:49",
"content": "avrs are not arduinos, and sketch is not a replacement name for firmware.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313839",
"author": "noah vawter",
"timestamp": "2011-01-25T07:25:49",
"content": "@bluewraith it is for me atm@dioxide wrong thread d00d?Another question: does anyone know how to read the compiler output files to find out where a particular variable would be stored in flash?e.g. if you had a sample in an array in a piece of software and you wanted to ONLY overwrite the piece of code in a particular spot?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313840",
"author": "dioxide",
"timestamp": "2011-01-25T07:27:26",
"content": "no, looks like the right thread to me.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313843",
"author": "dioxide",
"timestamp": "2011-01-25T07:29:08",
"content": "of course, youd have to actually read the article for my comment to make sense.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313873",
"author": "Tim",
"timestamp": "2011-01-25T08:07:39",
"content": "Nice, perfect timing for my adventures in iClicker hacking. They use an ATmega8, have 6 pin ISP header, and no lock bits set :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313909",
"author": "bogdan",
"timestamp": "2011-01-25T09:28:46",
"content": "Since the arduino madness startet, people started writing articles about simple basic stuff about microcontrollers like they have discovered some great thing.(like using a vref pin… or this).I understand, it is for people who have nothing to do with microcontrollers and if the vref article does indeed have some info in it… i see nothing useful in it.If you have problems losing files, use a version control software and backup.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313925",
"author": "intelligentGuy",
"timestamp": "2011-01-25T10:13:13",
"content": "Haters gonna hate",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313937",
"author": "ejonesss",
"timestamp": "2011-01-25T10:48:57",
"content": "“lock bits on the ATtiny13 chip had been set in order to protect the firmware from our prying eyes”couldnt a ATtiny13 based chip be used to protect video games from copying?go back to the 80’s and make cartridge based games.inside the cartridge would be a board with a ATtiny13 chip containing the game’s code done in vector to minimize filesize, midi for the music notes and only real samples for the instruments and real samples for the voices?yes it would make them more prone to failure due to bad contacts (remember the problems with nintendo?)the companies could be able to protect the content better because of the lock bits.a possible way way around the space limitation of cartridges are to use in combination with cd or dvd.cartridges for the game code and cd or dvd for the sound andskins that are applied over the vector wire frams (most people want to copy the entire game not the images and sounds and music (unless there is a specific image or song))",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313951",
"author": "dwan",
"timestamp": "2011-01-25T11:09:45",
"content": "@bogdanYeah, let’s just publish articles that only engineers can understand, and f*** DIY spirit.NOT.Are you afraid of some guys knowing what a VRef pin is ? Wanna keep knowledge for an elite ? Why are you even posting here ?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313954",
"author": "Daid",
"timestamp": "2011-01-25T11:20:22",
"content": "@ejonesss: First, you have no idea how game consoles work. Nor how game copy protection works.Secondly, you underestimate the hackers.Read this:http://www.fpgb.org/?page_id=17And this ‘article’ disappoints me. This is very basic stuff. If you name something “The facts about flash memory” I kinda expect the following:-Amount of write cycles.-How to do self programming (bootloaders) in different types of chips. The ATMega only supports self programming from the “bootloader” area, while the ATTiny supports self programming from any address.-I expect things like sector sizes, low level ISP commands.If you really want to know a bit more about the flash in the AVR chips, then open the datasheet of your chip, and goto the chapter called “Boot Loader Support Read-While-Write Self-Programming”And the chapter “Memory Programming”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314442",
"author": "DarkFader",
"timestamp": "2011-01-25T23:50:37",
"content": "I remember having trouble porting my bootloader from atmega64 to atmega128 because of the 16-bit addresses. I have one reserved block in my bootloader at the end that contains the flashing code in case I wanted to update the bootloader itself. The bootloader starts with a check of the fusebits too. Does some CRC calcs and simple symmetrical encryption. Would have been better if I weren’t using all 8KB yet :/ (yeah of course I could extend to app area at some point…)",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,296.311138
|
||
https://hackaday.com/2011/01/24/building-a-creepy-doll-army/
|
Building A Creepy Doll Army
|
Mike Szczys
|
[
"Toy Hacks"
] |
[
"animatronic",
"arduino",
"chucky",
"doll",
"servo"
] |
Want your very own Chucky doll to scare the crap out of the roommates? [Gzip] shows you how to make this happen by
adding servo-based animatronics to old dolls
. In the video after the break you can see the doll throw up her arms and turn her head thanks to a motor in each shoulder and one in her melon. You won’t see it in the clip, but the legs are motorized too meaning that some creative coding might have this old gal awkwardly crawling across the room (with knife in hand). Then again, maybe this is just the inspiration you need to get off your bum and finish
the Santa-Pede Challenge
. Submissions are due a week from today!
[youtube=http://www.youtube.com/watch?v=rLL6a-Kd-_Q&w=470]
| 7
| 7
|
[
{
"comment_id": "313584",
"author": "Crunch",
"timestamp": "2011-01-25T00:25:04",
"content": "Holy furk … I hate dolls",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313585",
"author": "bluewraith",
"timestamp": "2011-01-25T00:29:44",
"content": "Aww.. and what a time for my dremel battery to be drained.. :(",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313638",
"author": "dustandechoes91",
"timestamp": "2011-01-25T01:38:10",
"content": "Small soldiers anyone?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313639",
"author": "medwardl",
"timestamp": "2011-01-25T01:46:00",
"content": "I was thinking more demonic toys.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313649",
"author": "81rdm4n",
"timestamp": "2011-01-25T02:14:26",
"content": "http://daid.mine.nu/instructabliss/?url=http://www.instructables.com/id/Simple-Animatronics-with-Servos/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313789",
"author": "xeno",
"timestamp": "2011-01-25T05:40:39",
"content": "@dustandechoes91I too was thinking of small soldiers!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314028",
"author": "OhioKen",
"timestamp": "2011-01-25T14:26:22",
"content": "We have met the enemy, and he is you.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,296.353266
|
||
https://hackaday.com/2011/01/24/keyless-entry-via-sms/
|
Keyless Entry Via SMS
|
Mike Szczys
|
[
"home hacks"
] |
[
"lock",
"parallax",
"sms",
"spinneret",
"text message",
"twilio"
] |
[Billy’s] work got new keys which he didn’t want to carry around with him. Instead he built this system to
unlock the door via text message
. It is based around a
Spinneret Web Server
which drives a servo motor. He’s rigged up a pipe hanger to add some leverage to the lock’s knob. We’re surprised that the servo has enough power to do the job here but the video after the break shows there’s really no problem. On the communication side of things [Billy] set up
Twilio
to wait for text messages from an approved list of senders, then used an HTML form to issue the unlock commands to the webserver.
[youtube=http://www.youtube.com/watch?v=eexlYrESdP8&w=470]
[via
Make
]
| 15
| 15
|
[
{
"comment_id": "313545",
"author": "Aaron",
"timestamp": "2011-01-24T23:23:17",
"content": "Hey, awesome! And if you use an MVNO as shitty as mine, you can text the door and stand around half an hour waiting for it to unlock!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313550",
"author": "GotNoTime",
"timestamp": "2011-01-24T23:32:32",
"content": "Huh. I’m surprised that the little servo has enough torque to turn the lock as well.The SMS whitelist doesn’t give you amazing protection though. There are sites online which let you spoof a SMS and type in whatever you want as the sender. I guess you’ve got bigger problems though if somebody knows you well enough to know your cell number, your door lock cell number, how to operate it and is malicious :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313559",
"author": "Dan",
"timestamp": "2011-01-24T23:37:26",
"content": "Hope he has a backup power unit just in case the power goes out and he leaves his keys at home.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313575",
"author": "Olek",
"timestamp": "2011-01-25T00:11:33",
"content": "For me it is interesting, if it is possible to “override” the servo with the plain old mechanic key if the system would (for some reason) went mad?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313582",
"author": "Amperand",
"timestamp": "2011-01-25T00:23:58",
"content": "This is awesome. I want one. Or 12.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313586",
"author": "aztraph",
"timestamp": "2011-01-25T00:32:02",
"content": "not much on security. keep it lan enabled and a wireless router would be more secure, and keep your friends from unlocking your door in the middle of the night or while your away, bad way to get punked.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313595",
"author": "Fallen",
"timestamp": "2011-01-25T00:54:04",
"content": "I’m surprised that servo has enough torque to lock the door. I kind of want to see a vid with it actually unlocking the door. When it’s like this there isn’t as much binding on the bolts of the lock.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313668",
"author": "jeff",
"timestamp": "2011-01-25T02:34:34",
"content": "It’s not like the servo is connected directly to the knob.There is a lever attached to it.Notice how the servo horn turns a bit more than the knob.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313671",
"author": "jimmys",
"timestamp": "2011-01-25T02:38:39",
"content": "Is that a few copper strips bearing the load of the high-torque servo?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313850",
"author": "yosh",
"timestamp": "2011-01-25T07:38:40",
"content": "Parallax seems to be holding a Spinneret design competition with $3000 as first prizehttp://www.parallax.com/SpinneretWebServerContest/tabid/902/Default.aspx",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313889",
"author": "Richard",
"timestamp": "2011-01-25T09:03:10",
"content": "Is it possible to spoof the phone number in a text messg? I.e. an attacker could send a sms with a false header saying it was from billys phone? shouldn’t he use some sort of encryption/ handshakingRic",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313961",
"author": "gilbert wham",
"timestamp": "2011-01-25T11:34:47",
"content": "@Olek. Yes, you can turn the tumblers and the inside handle on these locks independently. And I love the fact that HAD’s comentariat’s first thought is, ‘How do we break into this dude’s house?’. Splendid.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314053",
"author": "Entropia",
"timestamp": "2011-01-25T15:53:17",
"content": "Whoa. How overly complicated can you make a system? Quite much apparently.How about just using a $25 GSM modem from DealExtreme mated to an AVR? Total BOM cost $30 and two potentially failing steps eliminated from the chain of opening the door.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314148",
"author": "Cricri",
"timestamp": "2011-01-25T18:57:30",
"content": "So to avoid carrying a key that unlocks your door instantly, you need to have your phone (not only can you lose it like your keys, but you are more likely to have your phone stolen than your keys, it can run out of battery, you can have poor coverage, the lock is not aesthetically pleasing, consumes energy, it can run out of electricity say if there’s a power cut, …), type and send a text message, and wait (see unlocking in the video) for your device to receive the text before you can get in or out?Yet another hack making a fine and perfected solution less practical, just like a binary clock.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "541840",
"author": "efren",
"timestamp": "2011-12-22T03:51:49",
"content": "i would like to know how the device detects that the door is actually closed? or if there were mechanical failures, will it still reply “door closed” even the mechanical lock malfunctions? thanks for the help Mike",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,296.409948
|
||
https://hackaday.com/2011/01/24/amarino-makes-android-controlled-robots-a-snap/
|
Amarino Makes Android Controlled Robots A Snap
|
Mike Szczys
|
[
"Android Hacks"
] |
[
"accelerometer",
"amarino",
"android",
"arduino",
"bluesmirf",
"bluetooth"
] |
[Lucas Fragomeni] is
controlling this robot using the accelerometer on his Android phone
(
translated
). He could have gone through
our Android tutorials
and developed a custom application but he took the shorter route and used
Amarino, an ‘Android meets Arduino’ toolkit
, to do it for him. [Lucas] combined an Arduino, a BlueSMiRF Bluetooth modem, and two servo motors to build his robot. Amarino lets him connect to that Bluetooth modem and send sensor data over the connection. In this case it’s only the accelerometer that he chose to use, but he could have gone with the touchscreen, or any other sensor the handheld has to offer. Using this code package got him up and running quickly, only requiring that he writes his own code to turn the received signals into servo motor control routines. See it in action after the break.
[youtube=http://www.youtube.com/watch?v=AAGCgGwvLPM&w=470]
| 5
| 5
|
[
{
"comment_id": "313510",
"author": "Hackius",
"timestamp": "2011-01-24T22:08:38",
"content": "That is some fancy expensive flooring",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313702",
"author": "colecago",
"timestamp": "2011-01-25T03:39:11",
"content": "Sure he could have used tutorials… its just they never got to the bluetooth part like they mentioned they would… I’ve played a bit with Amarino myself, but haven’t found it terribly useful for what I wanted. I ended up using google’s bluetooth chat example to build my application. I’m eventually going to make it into a hyperterminal capable of sending and receiving hex and then posting the app and source code for free, that should help robot guys out as well.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313836",
"author": "Toad Geek",
"timestamp": "2011-01-25T07:19:17",
"content": "That’s another brazilian Arduino + Android project. Those guys are working hard on it. Very nice.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "382201",
"author": "jon",
"timestamp": "2011-04-18T10:22:49",
"content": "Hi, looks great, could you post your arduino sketch, I am not sure how to sink the accelerometer sensor info within the arduino sketch. Any pointers would be great. Thanks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "390254",
"author": "Illuminator91",
"timestamp": "2011-05-05T05:30:36",
"content": "HI..nice one…I was searching for this kind of thing.Can anyone help me on how to interface mobile phone(Galaxy S) and microcontroller wirelessly, just like he did.Thanks",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,296.449882
|
||
https://hackaday.com/2011/01/24/yet-another-cat-door/
|
Yet Another Cat Door
|
James Munns
|
[
"Arduino Hacks"
] |
[
"arduino",
"cat",
"flap",
"rfid"
] |
RFID cat flaps are one of those projects we see all of the time. They are generally pretty simple to rig up, not too expensive, and have a good “wow” factor for any non-technical friends or family, not to mention tremendously useful. Why did we decide to share
this one
? Well, for one, it is simple. It doesn’t tweet, email, or text message, it just gets the job done. Two, it is excellently documented, including a detailed parts list and a step by step schematic just about anyone could use to build their own. [landmanr] does mention that he recommends some sort of project enclosure to protect the electronics from damage, which would be bad for the poor cat stuck outside.
| 11
| 11
|
[
{
"comment_id": "313482",
"author": "Bill Porter",
"timestamp": "2011-01-24T21:05:46",
"content": "Blissified.http://daid.mine.nu/instructabliss/?url=http://www.instructables.com/id/RFID-cat-door/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313512",
"author": "Eugene",
"timestamp": "2011-01-24T22:12:05",
"content": "Yeah, an enclosure to protect it from the cat!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313531",
"author": "Frogz",
"timestamp": "2011-01-24T22:54:28",
"content": "explain 1 part to mehow do you keep said cat from finding all of those fun tasty dangling wires and using them to either a: play with or b: clean his teeth",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313547",
"author": "Hirudinea",
"timestamp": "2011-01-24T23:26:01",
"content": "It says the cat has an rfid on it, but many cats have an implanted ID chip, which is also rfid, couldn’t you read that (if you had a properly equiped cat?)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313604",
"author": "Scott",
"timestamp": "2011-01-25T01:05:25",
"content": "@Hirudinea – That’s what I want too, but I can’t seem to find any good info on reading the #@$% implanted RFID tags. They use a special protocol or something and aren’t read by standard 125k RFID readers.Anyone know how to read an implanted pet RFID tag with an arduino, etc?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313774",
"author": "Trebu",
"timestamp": "2011-01-25T05:08:28",
"content": "The chips animals are implanted with (as I understand it) come in two different varieties. The older variety had a flaw where it is hard to read even if you know where it is. The newer one takes care of that but the range still is not great. The chips also have a tendency to drift away from there original position(back of the neck) A RFID tag in the collar would be my choice implementation. The reader would be easer to setup (on the door rather then in an animal tunnel)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313860",
"author": "mike",
"timestamp": "2011-01-25T07:49:27",
"content": "I made mine to read the imbedded RFID tag, however I used a modified ag RFID reader, It may be because most standard hobby modules just read HDX tags rather than the full duplex tags commonly used to tag pets?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313936",
"author": "phuzz",
"timestamp": "2011-01-25T10:47:24",
"content": "My folks recently bought a commercial version of this, that uses the implanted chips in their cats.It seems to work pretty well, and has about a 4-6″ range.The only difficult bit was persuading the cats to go through the receiver the first time to program them in. Why is it that cats can always tell when you want to do something undignified with them?I has scratches.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313949",
"author": "strider_mt2k",
"timestamp": "2011-01-25T11:08:10",
"content": "My cat(RIP) would have had those wires shredded up in a jiff, but the pic is probably from the early stages.It’s always cool to see these types of projects.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314455",
"author": "TomF",
"timestamp": "2011-01-26T00:10:10",
"content": "Quote: Why did we decide to share this one? Well, for one, it is simple.Well, not as simple as the one I saw recently in a program about this eccentric british inventor Arthur Pedrick:http://en.wikipedia.org/wiki/Arthur_Paul_Pedrick#Chromatically_selective_cat_flapEssentially he uses a light sensor to keep the neighbour’s black cat out…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "321099",
"author": "addidis",
"timestamp": "2011-02-02T12:28:48",
"content": "I live in chicago and its really cold. So my cat figured out that I tap the space heater to get the thermostat to kick on or off. My cat now walks in and bats the nob of the heater trying to get it to turn on. Seeing this makes me think my idea to build a cat switch for the heater might not be as crazy as i had thought.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,296.678649
|
||
https://hackaday.com/2011/01/24/google-takes-science-fairs-global/
|
Google Takes Science Fairs Global
|
Mike Szczys
|
[
"contests"
] |
[
"google",
"prize",
"science fair"
] |
Teen hackers get ready to compete for cash and prizes. Google,
the big G itself, is sponsoring a Science Fair
but it’s not in a town near you, it’s online (no surprise there). Project entries will populate the content of a new corner of the Googleverse, with contestants 13-18 competing alone or as a team. The grand prize is a trip to the Galapagos Islands for ten days, but there are also cash scholarships for all of the winners. Check out their promo video for the event after the break.
If you’re a college student who’s too old to be eligible don’t forget to keep your eyes open for details about 2011 Google Summer of Code. Last year’s information is still up, but
they usually release the details sometime in the first quarter
.
[youtube=http://www.youtube.com/watch?v=IOIb17J2DaE&w=470]
[via
Make
]
| 7
| 7
|
[
{
"comment_id": "313463",
"author": "vonskippy",
"timestamp": "2011-01-24T20:03:43",
"content": "In other news from a few weeks ago…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313479",
"author": "Amos",
"timestamp": "2011-01-24T20:52:31",
"content": "Perhaps that should be:“Teen hackers, get ready to compete for cash and prizes.”or maybe:“Teen hackers: get ready to compete for cash and prizes.”Also, “the big G” is, was, and always will be General Mills :D (can you tell I skipped lunch? ):",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313501",
"author": "the old rang",
"timestamp": "2011-01-24T21:51:23",
"content": "In your list of options, you forgot…Teen hackers, get ready for google or someone else to patent your idea, and leave you out in the cold.Looking at ideas, or anywhere for that matter, is where inventive or legal minds come up with ideas, or patents to steal from the creative.(ala Eli Whitney and the cotton gin… so easy, anyone could make it… so… they all stole from him)Put it all on the net, means something, ONLY if there is a patent guarantee.You say, what ideas can come out of a ‘science fair?’I say look how many companies were started by the under 18 crowd.I see great loss for those that are not very careful.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313537",
"author": "Ben",
"timestamp": "2011-01-24T23:00:59",
"content": "Teen hackers get ready to realize that even though you’re the best in your school, you don’t have a chance at a global level.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313731",
"author": "Nick",
"timestamp": "2011-01-25T04:36:53",
"content": "`Entrant will retain ownership to his/her Entry subject to the version of the Google Terms of Service applicable to the Entrant based on country of residence. However, by entering the Competition, and to the extent allowed by law, Entrants grant the Competition Entities and their respective affiliates, licensees, promotional partners, developers, legal representatives, assigns, agents and licensees (collectively, the “Licensed Parties”), a perpetual (except in France and Spain, for the duration of rights), worldwide, royalty-free, non-exclusive, sub licensable, unconditional and transferable license to edit, modify, cut, rearrange, add to, delete from, reproduce, encode, store, modify, copy, transmit, publish, post, broadcast, display, adapt, exhibit and/or otherwise use or reuse (without limitation as to when or to the number of times used), the Entrant’s (or Team’s) Entry, name, address, image, voice, likeness, statements, background and biographical material including, but not limited to, all materials submitted in connection with the Competition, as well as any additional photographic images, video images, portraits, documents, interviews or other materials relating to the Entrant or Team and arising out of his/her participation in this Competition (with or without using the Entrant’s name) in any and all media, including but not limited to print, digital and electronic media, computer, DVD, CD, audio and audiovisual media (whether such media is now existing or hereafter devised), in any language, throughout the world, and in any manner, for trade, advertising, promotional, commercial, or any other purposes without further review, notice, approval, consideration, or compensation to Entrant or any third party.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313959",
"author": "Remarknl",
"timestamp": "2011-01-25T11:27:40",
"content": "@Ben If you say that to everyone, no one has a chance…Google SoC:http://www.google-melange.com/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314116",
"author": "Jim",
"timestamp": "2011-01-25T17:34:15",
"content": "check out the countries that cant enter",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,296.721376
|
||
https://hackaday.com/2011/01/24/roll-the-dicey/
|
Roll The D’Icey
|
James Munns
|
[
"Toy Hacks"
] |
[
"atmega",
"Atmel",
"dice",
"die",
"lock",
"prize",
"secret"
] |
Most of the dice related hacks we run into have to do with pseudo random number generation, but today we saw something different. This sleek looking
jumbo die
is actually a prize holding box opened by a secret sequence of rotations. Using an accelerometer and an ATmega 328 with a sub-micro servo to control the locking mechanism. Worried about the batteries going flat and losing your treasure indefinitely? Good news! The batteries are accessable without giving away the secret inside.
It also turns out that this is an update to an
earlier project
from the same laboratory, so be sure to check that out as well to see where this build came from. Code is available for anyone looking to make their own, as well as a useful parts list.
[via
Hacked Gadgets
]
| 11
| 11
|
[
{
"comment_id": "313452",
"author": "Faelenor",
"timestamp": "2011-01-24T19:40:06",
"content": "psuedo?Incredible, every single post on HaD has at least a typo!Cool project, but does it give a hint to help you get the prize? Or it’s more like a safe?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313453",
"author": "Setatx",
"timestamp": "2011-01-24T19:40:06",
"content": "That’s fun =) Like those silly puzzle boxes but with more… geek-iness.Love FUN innovative uses for technology, instead of ‘how can we kill people better’ applications.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313455",
"author": "Setatx",
"timestamp": "2011-01-24T19:41:07",
"content": "And Faelenor… you could just appreciate the article… we’re not writing an English paper here.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313458",
"author": "Joe",
"timestamp": "2011-01-24T19:53:21",
"content": "Let people post what they want Setax. There are to many rude people already in the world",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313462",
"author": "Faelenor",
"timestamp": "2011-01-24T20:02:27",
"content": "Setatx: Since when only whatever you mean by “English paper” has to be written with correct English? So, what you say is that a journalist can write that 2+2 = 3 because he’s not writing a math paper? Correct language is the base of everything. It’s not acceptable to have typos on a site like this, especially considering that spell checkers are widely available.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313481",
"author": "TomF",
"timestamp": "2011-01-24T21:01:03",
"content": "I like the idea. And it looks good, too. One thing I wonder is, whether an accelerometer isn’t a bit over the top. I seem to remember some kind of non-toxic mercury switch the was featured on HAD.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313483",
"author": "Whoever",
"timestamp": "2011-01-24T21:06:17",
"content": "“Correct language is the base of everything.”Wrong. Communications are the base of everything.2+2=3 is a failure at communicating that when you have two units on one place and two on another you have a total of four units.“psuedo random number generation” is, despite the typo, pretty effective at communicating that we’re talking about numbers being generated pseudo-randomly (for anyone who knows enough english to be browsing this site). So yes, that’s an acceptable typo. An inacceptable typo would be for ex. a miswritten part number (because it would fail to communicate what part they’re talking about).Moreover typos are sort of HaD’s signature now. It just wouldn’t be HaD without them. :-)As for the project, no comments, other than I’d have probably used a small rechargeable Li-Ion with a mini-USB port.Just to give it a modern feeling. AA batteries (especially in groups of 4) make me nostalgic. :-(",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313541",
"author": "deddie",
"timestamp": "2011-01-24T23:04:57",
"content": "@Faelenor: It’s more like a safe. You can give it as a present, and you can make the code as difficult and the clues as vague as you want.@TomF: Most mercury switches are 1 dimensional, while the dice needs 3D. The original dice used a mechanical 3D tilt sensor, but this was way too big for d’Icey.@Whoever: Noted for future redesign… Nostalgic :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313543",
"author": "cpmike",
"timestamp": "2011-01-24T23:17:16",
"content": "Reminds me of those wooden trick boxes, Knock Box and Spin Box. You had to spin it around and tap edges on the table in a certain order before the box would open… and its done entirely out of creative channeling in the wooden lid, no batteries required.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314004",
"author": "John Smith",
"timestamp": "2011-01-25T12:54:58",
"content": "“…actually a prize holding box opened by a secret sequence of rotations”Surely I’m not the only one to be thinking of Hellraiser :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "315467",
"author": "Malikaii",
"timestamp": "2011-01-27T06:35:09",
"content": "This would be an excellent addition to add another layer of complexity to your reverse-geocache puzzle box.And, as much as I don’t want to:Faelenor, you succeed at hypocrisy.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,296.630253
|
||
https://hackaday.com/2011/01/24/diy-ultrasonic-range-finder-for-5/
|
DIY Ultrasonic Range Finder For $5
|
Chris Nelson
|
[
"Arduino Hacks"
] |
[
"arduino",
"atmega328",
"diy",
"ultrasonic"
] |
After finding some ultrasonic transducers online for a dollar each [Kerry Wong] decided to create an
ultrasonic range finder
. The result is much like parallax’s PING))) sensor but much cheaper. His post is not only a good way to save some money, but also does a good job of explaining how ultrasonic sensors work. The transmit circuit is essentially an H-bridge, much like what you would use to control a motor. To listen to the returning echo he uses a pair of high gain/low noise op-amps to filter and amplify the signal. The board he uses to test the range finder (not included in the cost) is an ATMega328 running the Arduino boot loader. He also provides lots of example code to boot.
| 25
| 25
|
[
{
"comment_id": "313354",
"author": "tristan",
"timestamp": "2011-01-24T16:57:56",
"content": "source link seems dead, did we do that?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313357",
"author": "bluewraith",
"timestamp": "2011-01-24T17:06:02",
"content": "Domain seems to be down right now…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313362",
"author": "zerth",
"timestamp": "2011-01-24T17:19:02",
"content": "google cache, text onlyhttp://webcache.googleusercontent.com/search?q=cache:O9FqgQYiJNUJ:www.kerrywong.com/2011/01/22/a-sensitive-diy-ultrasonic-range-sensor/+www.kerrywong.com+sensitive-diy-ultrasonic-range-sensor&hl=en&gl=us&strip=1",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313366",
"author": "sneakypoo",
"timestamp": "2011-01-24T17:26:44",
"content": "Sweet, hopefully it’ll help me once the page recovers from the DDoS :P I tried creating something similar a while back but gave up. Circuits like these seem more like voodoo than science *sigh*",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313385",
"author": "Slanesch",
"timestamp": "2011-01-24T18:09:00",
"content": "@ sneakypooAgreed.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313393",
"author": "Bill Porter",
"timestamp": "2011-01-24T18:39:11",
"content": "Sigh… self hosting, through a DSL line no less. When will people learn? You can get a super cheap shared host for next to nothing now.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313395",
"author": "golddigger",
"timestamp": "2011-01-24T18:42:21",
"content": "Anyone know how to make a laser range finder. Small and light weight?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313421",
"author": "zing",
"timestamp": "2011-01-24T18:56:56",
"content": "@golddiggercamera and a laser pointer on a stick. If you know the length of the stick and the angle of the laser pointer compared to the camera, it is just trig.Smaller it is, the less accurate or more expensive it gets.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313431",
"author": "golddigger",
"timestamp": "2011-01-24T19:20:58",
"content": "Thanks for your reply! I have been through the google searches and I have seen the people doing work with webcams. But I was hoping for something less conpicious. The trig method with a cell phone camera and an eye safe laser pointer would be ideal, but I wouldn’t know where to begin. If anyone could point me in the right direction, it would be appreciated.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313472",
"author": "adam",
"timestamp": "2011-01-24T20:22:10",
"content": "I like seeing an embedded arduino like this. I’ve built arduinos before and they work great. $6 can easily replace a $40 basicstamp or $30 arduino board.very nice buildI’m building a Geocache GPS that I’ll be able to load coordinates into and track them down. Its like a reverse reverse geocache lol. It will have a standalone arduino like this.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313514",
"author": "Navic",
"timestamp": "2011-01-24T22:14:49",
"content": "I love the Parallax Ping but hate its price so thank you for the great project!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313562",
"author": "bluewraith",
"timestamp": "2011-01-24T23:50:39",
"content": "Site is back up as of right now for anyone interested.@adamI hate trying to incorporate a whole arduino board into a project. Its a waste of money and connectors. The only 2 cases I can think of would be a very temporary project (arduino controlled xmas lights) or a dedicated shield to bootload other AVRs.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313641",
"author": "Mason Moore",
"timestamp": "2011-01-25T01:52:10",
"content": "So where did he find the sensors? I can’t find them. If they’re a dollar each, then I definitely want some.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313645",
"author": "jimmys",
"timestamp": "2011-01-25T02:07:24",
"content": "golddigger, zing-A lot of cheap laser pointers can project designs like a smiley face or a star instead of just a dot. Measure the distance between star points or the eyes on the face.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313659",
"author": "Rusty",
"timestamp": "2011-01-25T02:23:32",
"content": "@Mason: I believe the site he got them from is;http://www.allelectronics.com/make-a-store/item/XDR-24/ULTRASONIC-TRANSDUCER//1.htmlRusty",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313667",
"author": "Mason Moore",
"timestamp": "2011-01-25T02:33:53",
"content": "@RustyThank you very much",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313675",
"author": "Lucassiglo21",
"timestamp": "2011-01-25T02:56:37",
"content": "my version:http://elcoyotequesuelda.blogspot.com/2010/12/mas-sensores-ultrasonicos.htmlthe range is 2cm-2mt and the accuracy is 3mm.now i have 6 and i am building another 5.i’m not using an H bridge, just a transistor and an inductor in parallel with the transducer (that gives you like 50v in the transducer)then i amplify the rx in 2 stages a couple thousand times with 2 high pass filters",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313914",
"author": "Lash",
"timestamp": "2011-01-25T09:51:06",
"content": "How similar is this technique to the ultrasound used in baby scans? Could this be used as a Diy scanner or would there be risks? 3mm precision sounds very promising and a fascinating project, good work.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313952",
"author": "strider_mt2k",
"timestamp": "2011-01-25T11:11:14",
"content": "This an an appropriate app would be awesome to put onto a Spy Gear Video Trakr, if they would release the GPIO pins already.Sorry to veer off topic.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313957",
"author": "Kaz",
"timestamp": "2011-01-25T11:22:13",
"content": "@Lucassiglo21Those look very nice. Have you considered selling them?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314017",
"author": "Lucassiglo21",
"timestamp": "2011-01-25T13:43:59",
"content": "yeah, i have considered that, and i think i’m going to. i would sell a version with smaller transducers, 10mm in diameter. and i would love to use an smd microcontroller, but i couldn’t find them here.i’ve made these because the parallax ones are too hard to get, and they cost like 65 dollars each.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314537",
"author": "Colin",
"timestamp": "2011-01-26T02:05:24",
"content": "I recently had to purchase 5 high frequency ultrasonic capsules for a project. I found a site that sells them for $0.75 each (40 kHz), but with a minimum order quantity of 10.http://www.satistronics.com/basic-ultrasonic-sensor-16mm-diameter-rx-tx-one-pair_p2207.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "318293",
"author": "Justin",
"timestamp": "2011-01-29T23:13:28",
"content": "@Lucassiglo21I was hoping the source was going to be made available, I’d like to try building one or 3.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "318312",
"author": "Lucassiglo21",
"timestamp": "2011-01-29T23:42:35",
"content": "i am using a pic12f675, it sends the 40khz burst, and waits for the response from the RX amplifier, the ADC was too slow, so i am using an internal comparator and an internal voltage reference module to get the response.i didn’t publish the code mainly because it is used for a sumo robot competition, and i want to use them there. and i would be the first one with homemade ultrasonic sensors there. if i release the code and the schematics i lose my advantage in the competition.i am also selling them.anyway, it’s not that hard to do it. and you have to calibrate the detection voltages versus time for the comparator, and that varies with the construction and sensor sensitivity, so even if i publish the code, it will be probably useless.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "318317",
"author": "Lucassiglo21",
"timestamp": "2011-01-29T23:50:57",
"content": "http://elcoyotequesuelda.blogspot.com/2011/01/sensor-ultrasonico-variante-2.html",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,297.246713
|
||
https://hackaday.com/2011/01/24/hackaday-links-january-23-2011/
|
Hackaday Links: January 24, 2011
|
James Munns
|
[
"Hackaday links"
] |
[
"burning",
"grass",
"hosting",
"instructables",
"project"
] |
New Project Hosting site
[Paul] wrote in to tell us about his brand new hack hosting service,
HackHut
. Based on WordPress with some modifications, it is definitely worth keeping an eye on as new features emerge.
Instructabliss
Speaking of project hosting,
Instructables
are a common source of projects as well as complaints.
Instructabliss
by [Daid] is an often mentioned solution in our comments, and we thought we would bring it up so commenters don’t have to. We understand why it was made and think it was a clever hack, but we don’t officially endorse it. We survive on Ad revenue, if someone were doing this to us, it would hurt. We’re also not sure about the legalities of such a service, so keep us updated.
Grass Burning Robot
[Sebastian] brings us his grass burning, flame throwing robot. This robot takes in SVG files to create its burn path, and burns away. Not too many details, but be sure to check out the photos on
his site
.
[via
Make
]
| 34
| 33
|
[
{
"comment_id": "313315",
"author": "Fallen",
"timestamp": "2011-01-24T15:52:51",
"content": "I would imagine that the HAD and whatever other communities that use instructabliss are so small compared to instructables user base, that this will have very little adverse effect.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313323",
"author": "amishx64",
"timestamp": "2011-01-24T15:59:32",
"content": "I’m pretty psyched about HackHut.Also, grass burning robot + golf course + crazy design = lots of head scratching on the green",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313324",
"author": "Juan",
"timestamp": "2011-01-24T16:00:11",
"content": "It took me a sec… LOL! A doggy poopin’ on the green! HAHAHA!!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313325",
"author": "NoNameNeedeD",
"timestamp": "2011-01-24T16:03:39",
"content": "holly smokes batman.. i might actually look at hacks linked to instructash*t agian… this is nice..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313326",
"author": "Lance",
"timestamp": "2011-01-24T16:06:27",
"content": "@amishx64, and some VERY pissed off greenskeepers. My brother worked on a course for a while. If someone vandalized one of his greens with such a machine, he’d be livid.I’m all for a good hack, but damaging property is over the line.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313327",
"author": "TheBadWolf",
"timestamp": "2011-01-24T16:08:25",
"content": "Hou-Ray to hackhut!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313328",
"author": "paul",
"timestamp": "2011-01-24T16:08:56",
"content": "Featured on HackaDay! I feel honored.We hope everyone enjoys hackhut, if you have any suggestions please contact us as we are always looking for ideas to improve the site and give you guys the features you want.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313334",
"author": "Daid",
"timestamp": "2011-01-24T16:29:25",
"content": ":| my semi legal site featured.The instructables are copyrighted materials from the writers of the instructable, not of the website itself. Any user can request to have his/her username blocked from instructabliss. A few did already.Also note that I will pull the site down if HackADay would use it in its main article links. My intention is not to steal from instructables. Just to provide an alternative way to read it after you found it. Instructables still has the nice “related” sidebar which can show interesting projects.I also had the intention of keeping the instructable ads in, but I could not get that to work.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "313335",
"author": "Caleb Kraft",
"timestamp": "2011-01-24T16:33:48",
"content": "@Daid,It is worth mentioning, but we won’t use it in our articles. Keep up the hacking!",
"parent_id": "313334",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "313350",
"author": "Daid",
"timestamp": "2011-01-24T16:53:18",
"content": "Good to know ;-) figured you wouldn’t.I hope to build something that’s really HaD worthy soon. Working on something, but it’s quite a complicated build.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313356",
"author": "Chris Muncy",
"timestamp": "2011-01-24T17:02:15",
"content": "Good job Daid! I love it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313359",
"author": "xeracy",
"timestamp": "2011-01-24T17:09:40",
"content": "fyi, if HaD turns to shit, like instructables did, you can expect us to use HaDBLISS.com to surf your content. I understand the web is financed by ad revenue, but i refuse to be eye-raped as payment for browsing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313361",
"author": "JC",
"timestamp": "2011-01-24T17:12:22",
"content": "Love the burner thing.@xeracy – HAD is a good site, I doubt they need overt threats. I think they understand the deal with too many ads.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313365",
"author": "hpux735",
"timestamp": "2011-01-24T17:23:45",
"content": "For me, instructables isn’t _just_ terrible because of the ads. It’s just a horrible site. Even though I probably have an account there, I never click on the images because you have to login to see them! w.t.f.. I have no love for instructables, and they owe everything to the hacking community.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313369",
"author": "svofski",
"timestamp": "2011-01-24T17:42:59",
"content": "instructables boo!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313371",
"author": "paul",
"timestamp": "2011-01-24T17:44:15",
"content": "That was how we felt. I hate having to login just to view pictures. That’s why we created hackhut.com, no one ever need login to read ANY part of the content OR to comment. Oh and no eye raping either, yeah that’s pretty important too!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313373",
"author": "Daley",
"timestamp": "2011-01-24T17:44:58",
"content": "@hpux735 (and others):Agreed. It’s not the ads that keep me off their site, it’s the extremely cumbersome nature of its functionality.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313375",
"author": "alan",
"timestamp": "2011-01-24T17:45:33",
"content": "@hpux735not sure what the big deal of “logging” in is…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313380",
"author": "nes",
"timestamp": "2011-01-24T17:52:34",
"content": "“We survive on Ad revenue, if someone were doing this to us…http://www.electronicsinfoline.com/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313384",
"author": "ss",
"timestamp": "2011-01-24T18:00:25",
"content": "Login barriers have been known to be a bad idea for a long time, especially the way Instructibles has implemented theirs.http://www.codinghorror.com/blog/2007/06/removing-the-login-barrier.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313397",
"author": "Bill Porter",
"timestamp": "2011-01-24T18:49:05",
"content": "“We survive on Ad revenue, if someone were doing this to us…”I was going to say it but nes beat me to it. Every time I get featured on HAD, i get trackbacks from 4-5 sites that are direct rips of HAD postings. Most are caught by my spam filter, the rest i delete. There’s only one true HAD in my life.Imitation is the sincerest form of flattery right? Maybe Instrucables will get the hint they are turning more people away now.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313422",
"author": "Bob",
"timestamp": "2011-01-24T19:01:01",
"content": "The grass burner thing is a cool idea but why go and mess up a golf course? Not only do you spoil it for golfers but give people making things a bad name. Its this kind of moronic disregard that ends up getting things banned.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313464",
"author": "reza",
"timestamp": "2011-01-24T20:05:25",
"content": "I use add blocking software and read most of my content from google reader, so they don’t make any money off me in the first place.I have an acct. with instructables, but their constant nagging login box does drive me nuts. They also do not provide their content, just a place to host other people’s content — if instructabliss offered hosting service and was somehow able to handle the load without the add content, then i would imagine the content providers would shift over.@bob it looks like an improvement to me.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313484",
"author": "salsaman",
"timestamp": "2011-01-24T21:08:36",
"content": "1) Best of luck to HackHut, there need to be mroe, easy to use places for people to post projects.2) Instructabliss is a rip-off no matter what you think of Instructables. Boo.3) That lawn burning robot looks cool, but I need to see video or else it’s only a concept.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313519",
"author": "paul",
"timestamp": "2011-01-24T22:31:48",
"content": "@salsamanThanks! We aim to please.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313520",
"author": "Standard Mischief",
"timestamp": "2011-01-24T22:32:05",
"content": "Y’all at HaD have ads?!?!?;-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313527",
"author": "paul",
"timestamp": "2011-01-24T22:47:51",
"content": "A few ads are one thing, but pro membership nags, and login requirements, AND lots of ads is just to much.plus who wants to see a link to “how to dress up your cat!” next to their awesome hack",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313539",
"author": "superkuh",
"timestamp": "2011-01-24T23:01:45",
"content": "Thanks David!I was really excited about instructables when it began. I signed up for an account, starting putting things up, etc. But then they implemented the crappy pop-ups, logins, the obstructive content hiding, and generally shitty javascript interface.Now if I get linked to instructables I disregard it, not even bothering to log in. Your site is a perfect fix.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313565",
"author": "zip",
"timestamp": "2011-01-24T23:56:51",
"content": "I have been boycotting instructathing. I encourage others (HaD) to do the same. Their structure is very irritating and not welcoming. Feels like they do not want to share with everyone. Isent’ hacking also about sharing?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313693",
"author": "Anonymous Coward",
"timestamp": "2011-01-25T03:21:59",
"content": "I feel ‘Instructables’ is a bit of a paradox.It restricts access to open information while capitalizing on free user generated content.Welcome to web 2.0… Open…and SHUT.”[..you grant Instructables the world-wide, royalty free, perpetual, irrevocable, non-exclusive and fully sublicensable license to use, distribute, reproduce, modify, adapt, publish, publicly perform and publicly display such Content solely for the purposes of providing and promoting Instructables.]“",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313935",
"author": "Max",
"timestamp": "2011-01-25T10:45:36",
"content": "Instructables needs to realize that “my way or the highway” is NOT A VALID BUSINESS MODEL on the internet in the 21. century, end of story. Adapt or go extinct – I’m just fine with the latter too.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313950",
"author": "Daid",
"timestamp": "2011-01-25T11:08:28",
"content": "To anyone who is against instructables because of the ads: Don’t be stupid, the site lives of ads.To anyone who calles me a leech: I don’t provide any links from instructabliss back to my own site. The site is hosted on a home internet connection, on a Via C3 on 700Mhz, so when it gets large amounts of traffic it will fall apart. It just provides access to information that is already available.My arguement against instructables is very simple, try to read this instructable:http://www.instructables.com/id/Led-Cube-8x8x8/Now try to read it on my site:http://daid.mine.nu/instructabliss/?url=http://www.instructables.com/id/Led-Cube-8x8x8/And even try to imagine a ad between each step. When you reach step 40, tell me which site you where still using.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314064",
"author": "walt",
"timestamp": "2011-01-25T16:13:27",
"content": "@Daid. you rule. thanks for all of your work.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314583",
"author": "Nuuli",
"timestamp": "2011-01-26T03:04:03",
"content": "Crop circles, here we go!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,297.015205
|
||
https://hackaday.com/2011/01/23/your-very-own-cloud-chamber/
|
Your Very Own Cloud Chamber
|
Mike Szczys
|
[
"chemistry hacks"
] |
[
"alcohol",
"cloud chamber",
"dry ice"
] |
[Kenneth] and [Jeff] spent a weekend
building a cloud chamber
. This is
a detection device
for radiation particles that are constantly bombarding the earth. It works by creating an environment of supersaturated alcohol vapor which condenses when struck by a particle travelling through the container, leaving a wispy trail behind. This was done on the cheap, using isopropyl alcohol and dry ice. They already had a beaker, and after a few tries figured out that the dry ice worked best when serving as a bed for the flask. A black piece of paper was added inside the base of the container to help raise the contrast when looking for condensate. They experimented with a couple of different methods for warming the alcohol, including an immersion heater built from power resistors.
There’s a video explaining the apparatus which we’ve embedded after the break. It’s a bit hard to see evidence of particle travel in the video but that’s all the more reason you should give this a try yourself.
[youtube=http://www.youtube.com/watch?v=BS1XJ1OVwfs&w=470]
| 28
| 27
|
[
{
"comment_id": "312716",
"author": "bluewraith",
"timestamp": "2011-01-23T20:29:47",
"content": "Interesting. There’s only a couple of particles you can see in the video, but it would certainly be something to try on a boring weekend.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312739",
"author": "zool",
"timestamp": "2011-01-23T21:16:54",
"content": "“you’ll have to watch this in HD”video’s max res is 480",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312743",
"author": "Kenneth Finnegan",
"timestamp": "2011-01-23T21:21:54",
"content": "@zool: H’erD. You stand a chance at 480 of seeing something. You don’t at 360…@Mike: I hadn’t noticed the phone number scrawled on the newspaper I used. I’ve censored that out, can you please repull the image.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312756",
"author": "Rocks25",
"timestamp": "2011-01-23T21:50:31",
"content": "No one else noticed it either, until you told us :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312763",
"author": "jan",
"timestamp": "2011-01-23T22:05:22",
"content": "excellent writeup ,great hack!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312766",
"author": "Chris",
"timestamp": "2011-01-23T22:15:47",
"content": "I built one of these sans the dry ice a while ago:http://lm741.posterous.com/a-stirling-cooler-powered-cloud-chamber",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312783",
"author": "Cubby",
"timestamp": "2011-01-23T22:37:21",
"content": "Since isopropyl alcohol contains a ‘fair amount of water, have you tried denatured alcohol, acetone or other ‘alcohol based’ solutions as acetone or MEK (methyl ethyl ketone) to see if you are able to gather better results, instead? All those items are usually available at your local hardware store. Just a suggestion to aid in your experimentation.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312831",
"author": "Harvie",
"timestamp": "2011-01-23T23:40:50",
"content": "Hey guys, there’s some phone number on the newspaper. maybe it’s some hot chick, but i am from india, can you check it for me? :-D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312887",
"author": "t&p",
"timestamp": "2011-01-24T00:28:04",
"content": "why can’t I have friends like this ;_;",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312895",
"author": "Jas",
"timestamp": "2011-01-24T00:41:55",
"content": "Here’s a better video:http://www.youtube.com/watch?v=LzwCn_gZW4YSame technique, but better (brighter and more collimated) light source and video in HD.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312896",
"author": "M4CGYV3R",
"timestamp": "2011-01-24T00:43:28",
"content": "Um, if you’re going to tell someone to watch your video in HD, please actually post it in HD.I couldn’t see shit.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312899",
"author": "Kenneth Finnegan",
"timestamp": "2011-01-24T00:50:25",
"content": "@M4CGYV3R: I am SO SORRY that I could not capture the particle trails for you in true HD with my crappy point-n-shoot camera. What I meant in the video is that you’ll want to turn up the resolution to 480, from the default 360. If you are so hell bent on seeing them, build one yourself.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312907",
"author": "Hirudinea",
"timestamp": "2011-01-24T01:07:10",
"content": "Nice, and considering its so cheap it would be perfect for public schools. (They’re so underfunded.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312932",
"author": "Jeff",
"timestamp": "2011-01-24T01:57:53",
"content": "One of the simplest and most successful days of science-driven nerd-dom that Kenny and I have ever had. And it took less than three hours to get the whole thing working. Guys, don’t ever turn down the opportunity to do random things with your engineering friends. Always worthwhile73",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312970",
"author": "Amos",
"timestamp": "2011-01-24T03:37:30",
"content": "Relax, people… It’s just the number for one of the Salvation Army thrift stores in Sunnyvale, CA.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312977",
"author": "Kenneth Finnegan",
"timestamp": "2011-01-24T03:45:44",
"content": "Hah. Probably should have figured that out before making a deal of it… -_- Thanks Amos.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312981",
"author": "greg",
"timestamp": "2011-01-24T03:59:57",
"content": "my high school had an experiment-driven nuclear radiation class and we made cloud chambers. we basically took a petri dish, put a strip of velcro (the soft side) around the inside toward the top and soaked in a little nail polish remover and put our sources in the dish and put the dish on some ice. it may have been dry ice, this was a good 12 years ago, so i don’t remember that part, just that it had to be cold.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313004",
"author": "Mike Szczys",
"timestamp": "2011-01-24T04:36:24",
"content": "@Kenneth: Fixed.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313069",
"author": "Jeditalian",
"timestamp": "2011-01-24T05:53:24",
"content": "Nice Sh00p.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313124",
"author": "Amos",
"timestamp": "2011-01-24T07:44:50",
"content": "@Kenneth: You’re welcome. Thank /you/ for the little mystery; I had fun solving it ;)For those who care (ie. nobody :P ) all I did was look up the “Mercury News” to find that it’s circulated in and around San Jose, CA (do you know the way? ;) and used the area code to do a reverse-lookup on the number. Easy as pie ;)(If I had read the article first, I would have seen that Kenneth’s from Sunnyvale and figured it out sooner, but I wanted to use just the photo).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313127",
"author": "Kenneth Finnegan",
"timestamp": "2011-01-24T07:53:52",
"content": "@Amos: Yeah, I’d say the fact that I rattled off not one, but six places very specific to the Silicon Valley in the first paragraph would’ve clued you in. Good show anyways. :-P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313309",
"author": "jm",
"timestamp": "2011-01-24T15:41:47",
"content": "If you’re having trouble seeing them… set the video to 0:25 and watch to the right of the flash light. at about 0:28 you’ll see two coming streaming in right below the light, and a few inches over to the right there’s one more. Easily visible on 480p and 360p.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313379",
"author": "Marco",
"timestamp": "2011-01-24T17:52:20",
"content": "Why wait for a random particle? Just dismantle an old ionizing smoke detector and place the bit of Americium-241 (a good alpha particle emmiter) in the beaker/petri dish. Then you’ll have a real show worthy of recording! The low energy radition from this element is blocked by as little as a single sheet of paper, so it is realatively safe. Remember to practice proper disposal after you are finished. Smoke detectors (and their batteries) are considered hazardous waste and should not be sent to the municipal landfill.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "615217",
"author": "noahspurrier",
"timestamp": "2012-03-29T11:38:47",
"content": "Americium-241 also emits gamma.",
"parent_id": "313379",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "313390",
"author": "Brent",
"timestamp": "2011-01-24T18:30:34",
"content": "Building a cloud chamber from whatever’s on hand is a great use for any dry ice you have left over from anything else.Tips I found on how to do that that mostly became a lot more relevant after I’d built one:* make sure it’s easy to see into your container. I used a mason jar that had some decorative texture and wasn’t very flat otherwise, so it was hard to see trails.* I used 91% isopropanol from the drugstore and it worked OK, but methanol and denatured ethanol are both supposed to be better.* I’m glad I bothered to use black felt in the bottom to provide contrast. The trails can be hard to see.* Again with contrast: lighting is critical. I used a flashlight and would be more careful setting up lighting again.* I just used dry ice like these guys but a dry ice and alcohol slush will provide better thermal contact with the bottom of your container.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313394",
"author": "Marco",
"timestamp": "2011-01-24T18:42:13",
"content": "Alternatively, if you have an old antistatic brush from your film photography/darkroom days to remove dust from negatives, then there is another ready source of Alpha particles. These contain Polonium-210 mounted right behind the soft bristles.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314872",
"author": "Frode",
"timestamp": "2011-01-26T13:28:17",
"content": "We did this in physics class, but with actual radioactive sources instead of just random particles. It’s easier to see the traces against a black background.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "408055",
"author": "con-f-use",
"timestamp": "2011-06-20T19:18:04",
"content": "Another thing that’s wrong in the explanation: Cosmic radiation does not come from the sun. It is a feedback from the big bang, bursts created by super novae, jets of black holes and neutron stars.You can actually see traces in your cloud chamber at night. If they came from the sun the earth would block them at night. Earth’ magnetic field captures most particles coming form the sun, which is very good for our health.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,297.430961
|
||
https://hackaday.com/2011/01/23/backwards-mario/
|
Backwards Mario
|
Mike Szczys
|
[
"Nintendo Hacks",
"Video Hacks"
] |
[
"crt",
"mario",
"nes"
] |
So you’ve long since mastered Super Mario Bros. and it no longer challenges you? Have you tried
playing it from right to left
? That’s what Backwards Mario is all about. The first portion of the hack is getting the image to display backwards. He’s working with an old CRT television, which uses a magnetic ring to aim the electron gun at the screen. By swapping the left and right wires from that ring you can flip the image horizontally. Now Mario will be travelling right to left, but the controller buttons will send Mario the wrong direction on screen. This is a snap to fix, just crack open the controller and swap the signals for the left and right buttons. Now it’s time to fall in love with the classic game all over again, just like [JJ’s] doing in the video after the break.
[youtube=http://www.youtube.com/watch?v=3e857vnXVqA&w=470]
| 34
| 32
|
[
{
"comment_id": "312630",
"author": "sli",
"timestamp": "2011-01-23T18:25:52",
"content": "I’d love to see the levels themselves reversed, with the start and ends swapped.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312632",
"author": "Tom",
"timestamp": "2011-01-23T18:26:35",
"content": "Is it reallythatdifferent to the original?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312637",
"author": "bolke",
"timestamp": "2011-01-23T18:30:02",
"content": "Play it looking in a mirror :P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312640",
"author": "Tom",
"timestamp": "2011-01-23T18:33:41",
"content": "That is awesome! :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312641",
"author": "Victor",
"timestamp": "2011-01-23T18:33:54",
"content": "is not easier to swap the joypad directions buttons to achieve the same effect of playing backwards??",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312652",
"author": "steaky",
"timestamp": "2011-01-23T18:49:03",
"content": "@victor,he did swap the joystick buttons.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312653",
"author": "mlseim",
"timestamp": "2011-01-23T18:49:14",
"content": "The author was correct. Switch both the video gun wires and the joypad buttons. You could use a mirror, but also would have to change the buttons. But how does a mirror really work?http://www.youtube.com/watch?v=msN87y-iEx0",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312654",
"author": "r_d",
"timestamp": "2011-01-23T18:52:34",
"content": "In related news: Bungie is hard at work on olaH, the latest installment in the popular Halo franchise.(I would’ve said Half-Life or something, but I think the earth might implode if Valve ever half-assed a game and released on schedule)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312662",
"author": "Bob",
"timestamp": "2011-01-23T19:08:29",
"content": "Why wouldn’t you just reprogram the game? Permanently damaged hardware vs a second version of the game with everything mirrored….hmmm",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312666",
"author": "svofski",
"timestamp": "2011-01-23T19:15:50",
"content": "As long as the music plays forward, it’s not backwards enough.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312668",
"author": "Sariel",
"timestamp": "2011-01-23T19:21:32",
"content": "so did anyone else notice the ‘?’ boxes are facing the right way?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312679",
"author": "JJ",
"timestamp": "2011-01-23T19:39:01",
"content": "@Bob: For me that would be MUCH more difficult. The only thing I sacrificed that’s worth anything here is a single controller. $2 at any thrift store.@Sariel: They are backwards, try the watching in HD",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312683",
"author": "CutThroughStuffGuy",
"timestamp": "2011-01-23T19:53:11",
"content": "Easier to do this with software in an emulator. Remap keys and mirror the screen using the video card driver.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1331489",
"author": "Jim Magdelania",
"timestamp": "2014-04-06T13:21:56",
"content": "come on now…. did you seriously just say that????",
"parent_id": "312683",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "312695",
"author": "Alex",
"timestamp": "2011-01-23T20:13:30",
"content": "If you have a newer projector it might have an option to mirror the image. Mine does this. Also if you have not heard of FireNes, all NES and gameboy games inside Firefox. Put the two together and you have an instant hack. enjoy!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312696",
"author": "Kemp",
"timestamp": "2011-01-23T20:14:21",
"content": "“Why wouldn’t you just reprogram the game?”Because it’s easier to swap a couple of wires that to reprogram the entire game? Do *you* know how to do it? :-P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312715",
"author": "dmcbeing",
"timestamp": "2011-01-23T20:25:58",
"content": "I am sorry to be the guy that says this but:Is this really a hack?I mean a hack is making something do something it wasnt ment to do.The SNES still playes the game the same way and the TV still displays stuff.I find this similar to taking a mouse intended for right handed users and using it with your left hand, only in this case the diffrence is purely aesthetic.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312724",
"author": "Inventorjack",
"timestamp": "2011-01-23T20:49:29",
"content": "dmcbeing: If reversing the horizontal display of an CRT and opening up the controller and swapping controls (both of which change the original functionality of the device from it’s original purposes) doesn’t count as a hack, then how exactly do you define hack?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1331491",
"author": "Jim Magdelania",
"timestamp": "2014-04-06T13:22:38",
"content": "EXACTLY!!!",
"parent_id": "312724",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "312735",
"author": "Walky",
"timestamp": "2011-01-23T21:07:24",
"content": "Cool. It would be nice to have an image mirrorer built into the nes, right after the composite image generation, so it would be “plug and play”. That would probably add a little lag, though.dmcbeing:He hacked the tv, he hacked the controller, and I assure your the game is more difficult reversed because most of us are used to “left to right” side scrollers (or at least a mix of both directions); it’s even more notorious if you’ve played SMB before (who hasn`t?). I’m sure it would take me some time to get used to it (and I used to do speedruns of the game on console).sli:That would be nice, and is mostly doable by editing the levels (an automated script would be nice, though). That’s far easier than modifying the game mechanics and would allow the game to keep the “left to right” mechanics.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312736",
"author": "dmcbeing",
"timestamp": "2011-01-23T21:08:56",
"content": "As i said before:“I find this similar to taking a mouse intended for right handed users and using it with your left hand”.I find the term “mod” more appropriate for this thing since minor modifications to the hardware accomplish the results.No functionality has been added or removed as far as i can tell.The only diffrence i can see is that perhaps it would be more intuitive for a left handed user(Although the letters are now reveresed :S ).To end with perhaps i was wrong to dissmis this as a hack.None the less i think it is a rather simple “mod” that solves no existing problem while creating new ones.In the end it is not very appropiate for the Hack-A-Day audience.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312740",
"author": "ejonesss",
"timestamp": "2011-01-23T21:19:55",
"content": "bolke is right a mirror would work and would be much safer because of the high voltages found inside many crt based tv’s and monitors.also today’s modern tv’s now are lcd and plasma and have no scan coils to reverse.also there may be some video reversal hardware that you can get for if you want to build one of the original long neck tvs.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312742",
"author": "Walky",
"timestamp": "2011-01-23T21:21:37",
"content": "In my opinion, it adds extra replay value to the game; I wouldn’t call that a problem, but a nice addition. It sure looks the same, but I’m sure the game’s feel is quite different.It’s like trying to play Super C without shooting (when possible): it feels like a completely different game.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312808",
"author": "CutThroughStuffGuy",
"timestamp": "2011-01-23T23:17:15",
"content": "“bolke is right a mirror would work and would be much safer because of the high voltages found inside many crt based tv’s and monitors.”I know this was a well intentioned comment and you are not arguing that we should use a mirror simply because high voltage is present but it got me thinking……Just because something *CAN* be dangerous is ABSOLUTELY not a reason to never, ever work with it. We would not have modern power distribution if anything higher than 120 volts was “too dangerous” to work with. We would not have space travel or airplanes or possibly even cooking (fire can burn you)!I think the key takeaway is that before you mess with something that has inherent danger that you know that danger is present so you can avoid it. Then when you learn more about it so you can safely operate around it and with it, you continue to give it healthy respect but you are no longer fearful of the unknown. I used to be terrified of electricity. Then I refused to change out domestic breakers. Then I changed out domestic breakers and then even added some additional circuits. Last night I was using hot gloves and a clamp multimeter on live 3 phase power systems to check power use.I still fear it but I understand it and that makes a huge difference.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312886",
"author": "hiroshi",
"timestamp": "2011-01-24T00:27:16",
"content": "Some emulators have this feature built in (mirrored with reversed controls). I played through SMB backwards, and it was a nice change of pace after playing the game for 25 years.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312888",
"author": "DarkFader",
"timestamp": "2011-01-24T00:31:03",
"content": "an extra option would be to swap around R,G and B :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312891",
"author": "Edward",
"timestamp": "2011-01-24T00:39:08",
"content": "The controller did not need to be modified, just hold it so the D-Pad is on the right instead of the left.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312935",
"author": "octel",
"timestamp": "2011-01-24T02:24:44",
"content": "if you’re looking for an even bigger challenge, try the Dream Mary (aka Fancy Mario). All it takes is cutting one trace and placing one blob of solder:http://133fsb.wordpress.com/2009/11/21/dream-mary-on-a-budget/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312971",
"author": "JJ",
"timestamp": "2011-01-24T03:40:06",
"content": "@EdwardBut then everything else will be reversed… including up/down",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313031",
"author": "Sariel",
"timestamp": "2011-01-24T04:53:09",
"content": "@JJI see. guess I should have checked the hd version before I posted. lol",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313107",
"author": "clayton",
"timestamp": "2011-01-24T07:10:59",
"content": "the challenge is that your facing backwards so you cant use the fireball for oncoming enemies",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313234",
"author": "Alan",
"timestamp": "2011-01-24T11:38:52",
"content": "Looking at that picture, my brain is telling me that Mario is doing the moonwalk…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313276",
"author": "fartface",
"timestamp": "2011-01-24T13:59:36",
"content": "Again HAD showcases things we did in the 80’s as if they were clever now.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313777",
"author": "Kevin",
"timestamp": "2011-01-25T05:18:17",
"content": "Does anyone know of an emulator that would let me flip it horizontally? I want to play games backwards now. Also, I don’t want to use a mirror. And also, I tried NEStopia, FCEUX, FCE Ultra, and UberNES and I was unable to get it working. Also, I looked up flipping my entire display, but that apparently isn’t viable…you can only rotate.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,297.092771
|
||
https://hackaday.com/2011/01/23/revive-your-tired-dremel-battery-pack/
|
Revive Your Tired Dremel Battery Pack
|
Mike Szczys
|
[
"Repair Hacks"
] |
[
"aa",
"cordless",
"dremel",
"nicad",
"nimh",
"rechargeable"
] |
It turns out there’s nothing more than six Nickel Cadmium AA rechargeable batteries inside of that cordless Dremel battery pack. Yep, standard rechargeable AA’s that you can buy most anywhere, and now you can
revive that aging battery pack
by following [Stuuf’s] guide. Since you’re already at it, a few more bucks will yield a real upgrade by using the superior Nickel Metal Hydride batteries which should yield around three times as much use between charging. We totally understand having a battery pack, since the shape of the case is part of the handheld tool, and it should be easy to interchange the battery as one unit. We just wish that the battery pack had been designed to have the AA cells swapped out by the user once they had reached the end of the line.
Do you have other cordless tools in need of a pick-me-up? Check out this
Makita battery pack repair hack
for a point in the right direction.
[Thanks Bluewraith]
| 21
| 20
|
[
{
"comment_id": "312572",
"author": "Adam Outler",
"timestamp": "2011-01-23T16:56:06",
"content": "When changing the type of batteries which are in the drill, you must take into consideration the characteristics of the charger.. It’s a better idea for most to use the exact type of battery which came with the battery pack initially. This is something which should not be taken lightly. It can lead to safety issues like burns or even a fire.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312576",
"author": "paul",
"timestamp": "2011-01-23T17:05:54",
"content": "true but most nicad chargers work just fine with nimh",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312602",
"author": "Nomad",
"timestamp": "2011-01-23T17:22:06",
"content": "Daidified:http://daid.mine.nu/instructabliss/?url=http://www.instructables.com/id/Cordless-Dremel-battery-pack-upgrade/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312618",
"author": "Daid",
"timestamp": "2011-01-23T17:50:42",
"content": "@Paul: Using the wrong type of charger can result in exploding batteries at worse, or degraded results at best.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312626",
"author": "theodore",
"timestamp": "2011-01-23T18:18:32",
"content": "80 bucks at your local hobbie shop will buy you a good charger that can handle many types of batteries. If it were my batt-pack I would put LI-ion or li-po batts in the pack. RC cars have tought me lots about batteries and little of spelling",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312644",
"author": "jEXEy",
"timestamp": "2011-01-23T18:35:41",
"content": "@paul,diad and adam… any charger for a battery pack this simple is little more than a transformer. we’re not talking electric cars here with $10,000+ battery packs that require extremely accurate charge curves. that said, paul wins; the rest of you are ninnies :P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312658",
"author": "SquantMuts",
"timestamp": "2011-01-23T18:59:12",
"content": "@Adam OutlerIndeed, the charging characteristics of NiMh are different then NiCd cells. The full charge indication is much less depressed in NiMh’s then NiCd cells.NiCd cells also have much lower internal resistance, making them ideal for powertools. Thats why they are used often there.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312665",
"author": "TheBlunderbuss",
"timestamp": "2011-01-23T19:14:59",
"content": "Sounds like a Kip Kay hack.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312676",
"author": "Osgeld",
"timestamp": "2011-01-23T19:33:55",
"content": "most (large) battery packs are constructed like this, but if you didnt know, I guess you do now",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312682",
"author": "Grimm",
"timestamp": "2011-01-23T19:49:53",
"content": "Did this kind of hack with a cordless drill and spare laptop battery cells saved from a dumpster. (18650 4/3 A battery size) Works great as long as you have a way to charge them. Drill runs forever now and at a slightly higher voltage with just four half-dead lithiums.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312732",
"author": "Cricri",
"timestamp": "2011-01-23T21:01:24",
"content": "Indeed, I agree with those who advised against changing batteries type: I gave a bunch of NiMH to the old man, he charged them with a NiCd charger, and it screwed them up within few charges (i.e. they would not hold a proper charge anymore, and they appeared permanently damaged). Meanwhile, I’ve been using the very same batteries in a proper slow NiMH charger, and they lasted much much longer.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312744",
"author": "ejonesss",
"timestamp": "2011-01-23T21:25:18",
"content": "the site calls for nimh but since most nicd based tool chargers do not have any electronics you may want to stick with nicd.i think the electronics on a nimh charger is to prevent outgassing or venting.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312788",
"author": "Jeditalian",
"timestamp": "2011-01-23T22:38:44",
"content": "@Nomad- Awesome, now instructables is tolerable, with ahttp://daid.mine.nu/instructabliss/?url=and a /",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312903",
"author": "gyro_john",
"timestamp": "2011-01-24T01:01:29",
"content": "Here’s a nasty little gotcha and how to avoid it: Sub-C NiCd cells used in drills often have the entire outer cylindrical shell attached to the negative terminal – including the outer rim at the edge of the +ve end. If the solder tab attached to + touches that outer rim, you get a short, lots of current, lots of heat and quite possibly a damaged cell, even if you correct the problem.When I rebuilt my first drill battery and got three shorts, I corrected the problem with 3 layers of electrical tape under each of the solder tabs. Only later did I find out that the battery store can give you cardboard washers made to go around the +ve terminal and under the solder tabs, thus preventing the problem.If you get Battery Boys to rebuild your battery pack for you (which is costly), some of the kids that work there don’t even know this. My friend got two DeWalt packs ‘professionally’ rebuilt that way but they never worked so he threw them in a box. A year later, armed with my new knowledge, I opened them up and found them a mass of repairman-induced shorts and failed cells. $150 wasted.What I’m planning to build:– modify each of my battery packs so that each end of each cell comes out to a DB25 connector mounted on the frame of the pack. For an 18V pack, that’s 12 cells and thus 13 nodes.– build an Arduino-based pack analyzer that I can, at will, plug into that connector and analyze the state of charge of each cell in real time. While using the drill if I want. That will keep me from discharging a battery pack past the point where the weakest cell goes into reversal. If I stop when the lowest-capacity cell drops to 9V, none of the cells will be damaged and I can replace that lowest-capacity cell if I want.– The electronics will include some analog switches so it can connect various cells to the six analog inputs of the Arduino, and also include an LCD display (the 10-bit ADC resolution is sufficient!). My intention is to display the state of each cell in a string of 12 hex digits with 0 being 0V and F being a fully-charged cell. If a cell is ever driven into reversal, its character would be highlighted. Thus a string of fully charged cells would display a string of 12 F characters. With software calibration I can pick a digit which corresponds to 0.9V optimum fully-discharged state and have it beep or flash or something to alert me that I should stop there and switch packs.– Ordinary fast charging can be done with the regular drill charger, but if I find that it is over-charging some cells I could pretty easily have my accessory stop the charger.– For cell testing and maintenance I can use my Lacrosse Technologies BC-900 battery charger / analyzer / restorer (originally recommended by HaD a few years ago) to rate each cell, thus knowing which ones need replacing, and how bad off they are.– Since all four of the charging positions in the Lacrosse charger share a common ground, I add a second connector to the side of the battery pack, this one a Molex six-pin wired to conduct operating current (probably 12AWG). The point is to divide the series string of 12 cells into four strings of 3 cells each. Thus I can analyze, test or charge four cells at once instead of just one. If the nodes of the battery pack can be labelled 0 (battery pack negative) through 12 (battery pack positive), then the Molex connector breaks nodes 3, 6 and 9, bringing both ends out to where, most of the time, the breaks are bridged by a shorting link for normal operation. However, if I want to isolate part of the battery pack for analysis or maintenance, then I can.I hope my attempt to describe this without sketches is somewhat comprehensible? And if you’re wondering why I would go to all that effort, two reasons:– I have awful luck with my battery packs.– … I *can*!Here’s a question about my LaCrosse BC-900: I killed one of the four channels, but only the DISCHARGE function, which dumps through a string of chip resistors. All four channels charge, no problem. Has anyone traced the circuit yet and knows the transistor or FET that controls the resistive load? I haven’t gotten a round tuit yet.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1104716",
"author": "Bob",
"timestamp": "2013-11-18T16:43:59",
"content": "You bell end",
"parent_id": "312903",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "312960",
"author": "cerezorodrigoa",
"timestamp": "2011-01-24T03:19:35",
"content": "Awesome work, and is also ecologicallthx",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313190",
"author": "threepointone",
"timestamp": "2011-01-24T09:56:00",
"content": "yeah, people don’t realize this very often. NiMHs are not superior in every respect. For most consumer gear, NiMH is strictly better–at normal temperatures and moderate discharge rates, they get longer life and have higher energy density. Unfortunately, it turns out, at high power drain and for devices that use large spikes of power, NiMH actually cannot deliver as much power and will discharge faster than NiCds. In addition, NiCds (some grades, at least) can have wider temperature ranges. There’s a reason they don’t let you swap out the batteries–unless you special order the correct type of NiCds (just because it’s the same shape does /not/ mean they’ll work. . .really, guys) it won’t perform to original spec. And NiCd cells aren’t easy to find these days, given that most applications use NiMH cells. . .",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313307",
"author": "Praetorious",
"timestamp": "2011-01-24T15:30:01",
"content": "NiMH do need a different charging method than NiCd.Also, in some cases not all the cells may be bad, so just put the pack under load, see which cells have low-0V and replace them.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313353",
"author": "dan fruzzetti",
"timestamp": "2011-01-24T16:56:11",
"content": "Did the exact same thing with my dad’s DeWalt 18V cordless drill. The cells inside the battery pack are 4/5 sub C size, originally NiCd with 1200 mAh rating. Replaced with NiMH at 3300 mAh rating (there were much higher rated batteries, but the price got steep kinda fast).I attempted to connect the tabs using “conductive glue” which proved to be too brittle for my inexperienced hands, so I found a place with a pulse welder that did the connecting for me for $30. So for about $80 I got a battery pack with three times the capacity of the original.To inform you: NiMH *should* be charged on a different apparatus from NiCd, but if you withdraw a NiMH battery as soon as it’s full your NiCd charger won’t mess it up too quickly — it’s the trickle that’s different between the two.Weird cell size, though… Four fifths of sub C…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313381",
"author": "atouk",
"timestamp": "2011-01-24T17:52:38",
"content": "Fire hazard, burn hazard, and explosion hazard!Not all NiCads are created equal, and not all NiCad chargers are either. If you look at NiCad battery types you will find (among others) types R – rapid charge, H – high temperature, S – super high capacity/rapid charge, E – high capacity. Charging rates and internal resistance are only a couple of the specs used to spec the charging rate(s) of the chargers. Battery packs also may have an internal thermostat or other sensor to signal charging condition to the charger, and changing the battery type in the pack will affect the temperature profile in the pack. Anything more than a trickle charge wall-wart will have some electronics in the charger matched to the specific battery type(s) that the charger is designed to be used with.Attempting to charge the wrong type battery with a fast charger WILL create a fire or explosion hazard. It may not happen right away, but it will happen. Leaving a mismatched pack in a fast charger for an extended time is a fire waiting to happen.An over charged pack (because of a mismatched charger) may also catch fire or explode under use, or cause a switch failure. In a variable speed power tool, this failure can either be an open or a short. A dead short across a fully charged battery will make bad things happen. Quickly! Look inside a power tool battery, and you also see that one of the straps welded between the batteries will be either a fusable link, or other device to protect the battery against a dead short.If you’ve ever seen a high capacity battery self destruct, you would really try to avoid that happening while holding one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "1113118",
"author": "Galane",
"timestamp": "2013-11-27T06:02:30",
"content": "What’s hard to find is an AA cell charger that charges each one independently. I have two. One is a second revision Rayovac Renewal charger that does Renewal alkaline, NiMh and NiCd. The original Renewal charger only works with Renewal cells. The other one is a Kodak K605.I have an Energizer charger that’s faked up with four LEDs but only charges pairs of cells. Kinda useless to charge three AAA cells for LED flashlights.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,296.943445
|
||
https://hackaday.com/2011/01/22/turning-music-into-a-light-show/
|
Turning Music Into A Light Show
|
Chris Nelson
|
[
"Arduino Hacks",
"digital audio hacks"
] |
[
"arduino",
"audio",
"filter",
"op-amp"
] |
[nickinoki] Made a
light show
using some amplifiers and an arduino. First he created a microphone circuit based around a LM386 Audio Amplifier. After amplifying the output of the microphone a second time, he uses three bandpass filters to block all but a few desired frequencies from reaching the arduino. By only letting a few frequencies through the arduino is able to determine if the song is louder at higher or lower frequencies. Then using the three analogue inputs he created a scheme for generating the light show on an arduino. While he was unable to achieve the exact target frequencies with his bandpass filters they worked well enough to allow him to successfully generate the light show.
| 24
| 24
|
[
{
"comment_id": "311948",
"author": "Philip",
"timestamp": "2011-01-22T20:33:14",
"content": "http://daid.mine.nu/instructabliss/?url=http://www.instructables.com/id/Sound-into-Light-shows/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311964",
"author": "steaky",
"timestamp": "2011-01-22T20:52:20",
"content": "is there not an FFT library for arduino yet??",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311965",
"author": "MRC",
"timestamp": "2011-01-22T20:58:52",
"content": "steaky: there is an FFT library written in C for AVR, so you have to compile that for your arduino code. I tried mucking my way through it to make a audio graphical equalizer, but I fail at software.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311969",
"author": "nate",
"timestamp": "2011-01-22T21:06:36",
"content": "An Arduino is overkill for a simple project like this, of course, but it is a good way to get into audio DSP. (Comparators would have been a good choice for a simpler, all-analog approach.)As for the filters, could you not replace the resistors with trim-pots and use a multimeter to fine-tune the cut-off frequencies, since imprecise resistance/capacitance values are typically the culprit?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312013",
"author": "Sargon",
"timestamp": "2011-01-22T22:09:37",
"content": "only mic amp (opamp Tl-071) and serial shifters to drive ledsit is constructed as a blinky toy… not “pro” visualization toolvideo:http://www.youtube.com/watch?v=6G-vqpS9tXkFFT lib for arduino can be realy useful …",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312026",
"author": "Muhammad Dadu",
"timestamp": "2011-01-22T22:34:53",
"content": "LOL, i just did this 2 days ago, without knowing what i was doing. I ripped apart a controller from my phone speaker and wired them into the arduino board. Connected some wires to the controller and arduino and it worked :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312028",
"author": "Justin",
"timestamp": "2011-01-22T22:36:55",
"content": "This would be cool for low bandwith radio digital signaling.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312080",
"author": "vasskk",
"timestamp": "2011-01-22T23:59:12",
"content": "nice idea. i dont see where you need the arduino though…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312085",
"author": "vonskippy",
"timestamp": "2011-01-23T00:04:33",
"content": "Cardassian: So how many lights are there in this here “light show”?Picard: There….are….F..O..U..R….Lights!!!!!Cardassian: Wow, you humans are really lax on the whole “light show” definition eh?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312271",
"author": "Norm Lillibridge",
"timestamp": "2011-01-23T05:43:51",
"content": "Dear (I use the term loosly) HAD,I don’t like Instructables. They exist in opposition to “Freedom of the Internet”. In addition, they are making rediculous amounts of money off the work of others (Advertizing and “Pro” membership). And this is content they receive for free. I would prefer that you NOT refer me to them. I realize that you are not likely to do as I would prefer, so please note when the referral you make is to Instructables so that I can avoid wasting valuable emotional energy following the link. I may be the only reader who feels this way, but please humor me.Norm",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312346",
"author": "Eggman",
"timestamp": "2011-01-23T07:53:23",
"content": "@Normcry about it. how about you make a FREE account, and it turns into a great resource for anyone who wants to use the site for its intended purpose: making things. and good for them making money, whats it to you? two words: Chrome, AdBlock.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312352",
"author": "fyre",
"timestamp": "2011-01-23T08:03:16",
"content": "I did a similar thing with a mic, low pass filter for the bass and opamp.Output goes into a Picaxe 08M that filters out the beat and generates serial RGB flashy data that runs to my RGB lamp. (serout)If the beat had not been detected for a few seconds, it would fade to random colours. Once a beat had been picked up it would swap between two random colours (sometimes black to make a strobe effect).The colours would be changed every 8 beats or so so it should synch up with whatever song.It’s kinda fun to optimize programs into a small space. Squeeze every byte!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312369",
"author": "CalcProgrammer1",
"timestamp": "2011-01-23T08:43:32",
"content": "@NormInstructables makes money, yes, but for people who have a project to share you have several options to post your project. If you want something easy that will share your project with a huge number of people, Instructables is free and easy to use. Otherwise you would need to pay for a web host or run your own server with enough bandwidth to handle linking from HaD. Advertisements aren’t a problem if you use AdBlock and if you have a (free) account you don’t see the Go Pro stuff so I really don’t see the reason behind the Instructables hate. If you really don’t like it, don’t go there.As for the project, cool! I just finished a project where I modded some LED fans with microcontroller-driven RGB LED’s for my PC case (3 fans * 4 RGB LED’s * 3 R/G/B = 36 LEDs total with Software PWM). I used an FFT in Processing to analyze the audio playback and do the same thing except digitally to send serial commands and flash the LED’s. I have blue mapped to low (bass) frequencies, green to midrange, and red to high (treble).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312460",
"author": "strider_mt2k",
"timestamp": "2011-01-23T12:46:17",
"content": "@ vonskippy:That’s the main reason why you never EVER hire a Cardasian to be your lighting guy.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312470",
"author": "Vegetico",
"timestamp": "2011-01-23T13:09:41",
"content": "@CalcProgrammerYou mentioned you used a FFT libary for audio stuff… I’m plannung to play with FFTs on Atmels for a long time – but usually find excuses why not to start.One thing I’m always wonding is how you debug your stuff.Even assuming your FFT libary is rock solid – designing an FIR filter or whatever is (for me) always a try and error game.How did you do that. How do you test your whole setup – always with real data???",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312489",
"author": "fhamel",
"timestamp": "2011-01-23T13:59:54",
"content": "I built something similar into an IKEA mood lamp, although all audio processing is done on the atmega168 (using software filters, not FFT). The lamp also accepts MIDI input (and sports the requisite automatic colour-cycling modes):http://www.youtube.com/watch?v=q_wdKhV-b6w(I have changed jobs since posting the video comment, and I would now be willing to assume the minuscule risk of posting details about the construction/code… one day I hope to have/take the time to do so :-( )",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312500",
"author": "kernelcode",
"timestamp": "2011-01-23T14:29:57",
"content": "@Norm LillibridgeDoesn’t your browser tell you the target of links when you hover on them? If not, I suggest you get one that does.I always like to check where a link is taking me, lest I blindly click myself onto something horrific – such as Instrucatables.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312566",
"author": "jaqen",
"timestamp": "2011-01-23T16:42:11",
"content": "@norm; notice how the first comment from phillip, saves you from your misery.It never hurts to read other comments before you post your own",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312571",
"author": "jm",
"timestamp": "2011-01-23T16:53:20",
"content": "How about instead of writing some ridiculous note about hating instructables, you just point your browser elsewhere.Alternatively, add an entry in your hosts file to point anything hosted at instructables to google or something.just edit c:\\windows\\system32\\drivers\\etc\\hosts and add something like74.125.229.16http://www.instructables.comto the bottom.There you go. Problem solved. you don’t ever have to look at instructables again.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312624",
"author": "nate",
"timestamp": "2011-01-23T18:03:18",
"content": "For those who detest Instructables:Taking Philip’s tip a step further, there is a handy Firefox add-on called “Redirector” that allows you to redirect URLs matching a given pattern to a custom URL, based either on regexes or wildcards. By using the following include pattern:http://www.instructables.com/id/*…and the following redirect pattern:http://daid.mine.nu/instructabliss/?url=http://www.instructables.com/id/$1you can redirect all Instructables to Instructabliss.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312660",
"author": "Cubby",
"timestamp": "2011-01-23T19:06:58",
"content": "Why bother with a mic. pre-amp? Eliminate that stage, use a capacitor and a variable resistor for volume control and make two of ’em, feeding them at line level and stereo use. Gets rid of unwanted background noise such as someone talking in vicinity of the mic. and other ‘room noises’.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313106",
"author": "Calis",
"timestamp": "2011-01-24T07:10:01",
"content": "Not to say this isn’t cool, but I did this very thing when I was about 10 (close to 30 years ago…damn) and I used op amps. Even then the project cost me just a few dollars for parts. I also used incandescent bulbs for my “color organ” as the LEDs I had back then just weren’t very impressive for a light show.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313673",
"author": "DeFex",
"timestamp": "2011-01-25T02:42:31",
"content": "when i was a teen I made one with a triac and some transistors per channel. it was great for listening to ELO on :) Its not really a waste to use an arduino chip only though, you could program beat sequencing of lights and stuff.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "948936",
"author": "Devi",
"timestamp": "2013-01-28T11:59:55",
"content": "can we use TL084CN instead of LM386N as OPAMP?",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,297.306446
|
||
https://hackaday.com/2011/01/22/reverse-engineering-a-pcb/
|
Reverse Engineering A PCB
|
James Munns
|
[
"Repair Hacks"
] |
[
"bend",
"circuit",
"engineer",
"repair",
"reverse",
"schematic"
] |
Occasionally when a device breaks, the defect is obvious. Whether it is a blown fuse or a defective capacitor, generally the easy to see stuff is easy to fix. When a problem is more subtle, or when doing some more advanced tasks like adding functionality to a device, greater knowledge about a circuit board is required. While there might be details hidden in lower levels of PCB, often just knowing the mounted components and layout of the outside layers can be enough to create a rough schematic of a device. [Throbscottle] has put together an
excellent guide
for procedurally breaking down a photo of a board and turning it in to something useful. The guide utilizes some open source image processing software such as
the GIMP
,
Inkscape
, and
Dia
, all of which are widely available. Keep in mind this reverse engineering can be a time consuming process, but will almost definitely reward those patient enough to work through it.
[Thanks to everyone who sent this in!]
| 18
| 15
|
[
{
"comment_id": "311920",
"author": "Philip",
"timestamp": "2011-01-22T18:45:56",
"content": "Daidifiedhttp://daid.mine.nu/instructabliss/?url=http://www.instructables.com/id/How-to-reverse-engineer-a-schematic-from-a-circuit/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311923",
"author": "d",
"timestamp": "2011-01-22T18:56:22",
"content": "There was a talk at 27C3 (CCC) about reverse engineering PCBs. They are developing software, called dePCB, which is based on the transistor level tool degate ->http://degate.org/.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311931",
"author": "bty",
"timestamp": "2011-01-22T19:22:58",
"content": "@d : degate is for reversing integrated circuits (IC’s) from pictures of the die.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311946",
"author": "MrX",
"timestamp": "2011-01-22T20:14:44",
"content": "Very nice article. Here is a tip though, use morphological operators to trace the track it needs less manual work:http://en.wikipedia.org/wiki/Erosion_%28morphology%29It is pretty simple:1) convert the image to black and white.2) Use a dilatation operation followed by a erosion operation to connect broken tracks3) Use the dilatation operator, then make a inverted copy of the image, then subtract the image with the inverted copy. You will get the tracks.4) Post-process by hand the remaining…Also, putting the circuit over a light source can help you a lot getting a better picture of the tracks..",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6213187",
"author": "Jonas",
"timestamp": "2020-01-23T11:03:25",
"content": "Underrated comment !",
"parent_id": "311946",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "311947",
"author": "Darren",
"timestamp": "2011-01-22T20:16:13",
"content": "I was actually most interested in what the flaw turned out to be, not just the happy note that he solved it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312019",
"author": "walt",
"timestamp": "2011-01-22T22:19:16",
"content": "@MrCung @Philip Thanks for the links!instructables BOOOOOOOO!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312063",
"author": "wvdv2002",
"timestamp": "2011-01-22T23:40:55",
"content": "Isn’t it much easier to scan the whole pcb using a scanner? I don’t know how well it works with the components still on the pcb though…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312089",
"author": "Tom Hargrave",
"timestamp": "2011-01-23T00:18:56",
"content": "This isn’t reverse Engineering – it’s drawing a schematic from a PCB. Drawing a schematic is hardly the same as reverse Engineering especially when it comes to higher frequency, oscillators or circuits that are timing sensitive.When you reverse Engineer something you fully understand the design including impacts on timing, etc. There are designs out there with specifically designed center planes designed to impact data flow through the board. Some designs even have their own internal tuned coax etched into inner layers.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312095",
"author": "Steve",
"timestamp": "2011-01-23T00:33:28",
"content": "I did something similar recently, I grinded down the pcb of a phone and took pictures of every layer with a flatbed scanner. Then I used GIMP to trace the stuff I needed, worked great:http://www.steve-m.de/pictures/pirelli_dpl10/http://bb.osmocom.org/trac/wiki/PirelliDPL10",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312175",
"author": "Bill D. Williams",
"timestamp": "2011-01-23T02:44:15",
"content": "Holy carp Philip – that Daid thing is AMAZING!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!I can actually rear it now! It’s like I’ve re-discovered the internet!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312176",
"author": "Bill D. Williams",
"timestamp": "2011-01-23T02:47:49",
"content": "carp=crap & rear=read(sorry for the spelling – I was a little excited)I’m using it from now on! WooT!http://daid.mine.nu/instructabliss/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313166",
"author": "Richard Mathie",
"timestamp": "2011-01-24T09:11:50",
"content": "what about multilayer boards?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313367",
"author": "peet",
"timestamp": "2011-01-24T17:29:21",
"content": "can anyone post a link to the pdf ?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "409046",
"author": "kareem",
"timestamp": "2011-06-23T05:36:02",
"content": "There is one article which give out a description ofthe general process of pcb reverse engineering.You can view it athttp://www.instructables.com/id/How-to-reverse-engineering-pcb/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "804580",
"author": "asimkumar",
"timestamp": "2012-10-03T18:24:15",
"content": "multilayer boards are impossible to reverse engineer even manually",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "2484079",
"author": "Librarian",
"timestamp": "2015-03-18T15:09:56",
"content": "“multilayer boards are impossible to reverse engineer even manually”“atoms can not be split”“water does not have a prismatic effect, water has rainbows because of the chemicals they put in it”“the earth is flat”– Le most modern slave of TzeentchComments like this don’t need a report button. A valid login to hackaday should enable users to delete viewing of certain users from feedback comments. Attempting to troll or grief the work of others on collaboration science boards is the same as covering oneself in feces and saying you are wearing the best clothing.If a person lacks the knowledge; research the topic and formulate a proper question. The war against ignorance is a war any rationally minded person can not remain neutral in.",
"parent_id": "804580",
"depth": 2,
"replies": [
{
"comment_id": "3330960",
"author": "Sunny D",
"timestamp": "2016-12-23T19:52:33",
"content": "Awesome fucking comment! you have reaffirmed my faith in humanity. Thank you..",
"parent_id": "2484079",
"depth": 3,
"replies": []
}
]
}
]
}
] | 1,760,377,297.362383
|
||
https://hackaday.com/2011/01/22/high-voltage-etch-a-sketch/
|
High Voltage Etch A Sketch
|
James Munns
|
[
"cnc hacks"
] |
[
"bad idea",
"cnc",
"danger",
"etch",
"jumbo",
"makerbot",
"sketch"
] |
What do you get when you mix a simple X/Y plotter, a Flyback transformer, and an unhealthy disregard for safety? Possibly the worlds most dangerous
jumbo Etch a Sketch
! [Kalboon] started off by making an imprecise X/Y movement device, similar to a CNC machine setup, but with less emphasis on precision. This rig is powered by some commonly salvagable materials, including an old scanner, a remote control car, and some hobby servos. We like this approach because most of these materials could be scrounged from a parts bin, surplus sale, or craigslist for little to no actual cost. The
flyback
transformer comes from an old TV or monitor, though if you have
common sense
safety concerns, we would recommend just mounting a dry erase marker and a dry erase board to substitute out the high voltage bits. For people wanting a low cost introduction project to making a CNC or Makerbot style build, this isn’t a bad place to start.
| 12
| 12
|
[
{
"comment_id": "311878",
"author": "Bill Porter",
"timestamp": "2011-01-22T17:01:39",
"content": "All hail the great Daid!http://daid.mine.nu/instructabliss/?url=http://www.instructables.com/id/50000-volt-etch-a-sketch/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311901",
"author": "mic",
"timestamp": "2011-01-22T18:04:30",
"content": "I am gonna make one for my kids. (I hate those little %#&*s) Just kidding.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311903",
"author": "paul",
"timestamp": "2011-01-22T18:14:30",
"content": "@bill porterwe’re not worthy, we’re not worthy!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312076",
"author": "svofski",
"timestamp": "2011-01-22T23:49:22",
"content": "This must be a case of tl;dr but I can’t understand at which point in this construction 50kV become necessary, for what?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312099",
"author": "thaddius",
"timestamp": "2011-01-23T00:39:37",
"content": "What’s with all this safety nonsense? Flybacks aren’t inherently dangerous, just keep the current low and you’re fine.Also, since when is Hackaday your mom? Calm down with the safety garbage, he made what he wanted, and I’m tired of people taking some moral high ground about danger and safety. If you don’t have the right to enforce your morality at me, you certainly have no right to force safety.Focus on the builds, leave the pretentious safety commentary to others.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312102",
"author": "Piku",
"timestamp": "2011-01-23T00:43:26",
"content": "The HV part is for drawing on thermal paper… and there’s no photos of it, but there is a short 30 second video.So that thing you all clicked the link to look at… isn’t actually there for you to see.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312132",
"author": "svofski",
"timestamp": "2011-01-23T01:28:01",
"content": "@Piku thanks for the clarification.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312232",
"author": "ryan",
"timestamp": "2011-01-23T04:24:32",
"content": "last 15 minutes wasted trying to hunt for what the HV was for, thanks @piku for clarifying",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312244",
"author": "Chris",
"timestamp": "2011-01-23T04:58:43",
"content": "This project best summed up by AC/DC:“HIGH VOLTAGE! Done dirt cheap.”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312525",
"author": "zeropointmodule",
"timestamp": "2011-01-23T15:55:29",
"content": "nicely done!i wonder if something along these lines would work for “drawing” on a piece of copperclad pcb spin coated with a micrometre thick layer of paint?interesting idea to use thermal paper for this, as there are a lot of demised obsolete fax machines that use specific paper which only fits them and nothing else.(does posting on HaD stop someone else later patenting the idea?)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313471",
"author": "signal7",
"timestamp": "2011-01-24T20:21:38",
"content": "Useless writeup. No explanation of what he’s trying to accomplish or the theory behind what the project is supposed to do. If I don’t understand the problem, I don’t need the solution!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313856",
"author": "fastfourier",
"timestamp": "2011-01-25T07:44:06",
"content": "Don’t you mean a healthy disregard for safety?",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,297.481198
|
||
https://hackaday.com/2011/01/22/no-more-blurry-pictures/
|
No More Blurry Pictures
|
Mike Szczys
|
[
"digital cameras hacks"
] |
[
"arduino",
"blurry",
"motion blur",
"SLR"
] |
Say goodbye to ruined images thanks to this add-on hardware. It measures the movement of the camera when a picture is taken and
corrects the image to get rid of motion blur
. Above you see a high-speed camera which is just there for testing and fine-tuning the algorithm that fixes the photos. Once they got it right, the setup that the camera is attached to only includes an Arduino board, Bluetooth modem, 3-axis accelerometer, gyroscope, and a trigger for the camera. You use the new hardware to snap each image and it takes care of triggering the SLR’s shutter in order to ensure that the inertial data and the image are synchronized correctly.
[Thanks Rob]
| 27
| 27
|
[
{
"comment_id": "311847",
"author": "Patrick",
"timestamp": "2011-01-22T15:39:38",
"content": "That’s pretty neat. It’s basically a homebrew image-stabilization. It would be a lot easier and less cumbersome to just buy a lens with IS, though. Still…very impressive.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311860",
"author": "svofski",
"timestamp": "2011-01-22T16:08:32",
"content": "Pretty cool. Or one can quit drinking.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311862",
"author": "Maurice",
"timestamp": "2011-01-22T16:11:33",
"content": "This was presented back at Siggraph. It’s not IS, but it achieves similar results. The way it works is tracks motion and then as a post processing step you correct remove the blur via software algorithms on you PC. There are advantages and disadvantages to this system. Some of the advantages are that you aren’t reliant on mechanical systems to compensate for the shake and a significant cost reduction. A disadvantage is that correcting in post processing means you loose some temporal pixel information so you can’t do a perfect correction. It won’t work with your standard IS systems, unless the IS system reports back the corrects it made (highly unlikely) or these sensors are placed on the stabilized surface (even more unlikely).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311863",
"author": "Quin",
"timestamp": "2011-01-22T16:11:36",
"content": "The tiny pictures look great, but the high-res ones look like crap. Ghosts all over the place, duplicate rocks, even worse blurring in some of them.The small low-res images are impressive. And maybe with more accurate sensors the images can be corrected more accurately. 200 Hz sensor poling sounds fast, but sensor blur really sucks in two cases: long exposures and zoom lenses. I get worse blur at 1/100 s and 300mm zoom than I do at 1/50 and 50mm. Are the three data points gathered at 1/100 s going make a huge difference?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311864",
"author": "Quin",
"timestamp": "2011-01-22T16:13:23",
"content": "@Maurice you could get the data from the stabilized surface in a camera with body IS. Ones with lens IS only would make that increasingly difficult.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311879",
"author": "Haku",
"timestamp": "2011-01-22T17:01:59",
"content": "Weird. I was just thinking about this concept the other day when I was trying to take some pics without a tripod, remembering about how someone had previously done the same thing; deblurring images by measuring the camera’s movement with accelerometer/gyryoscope sensors and ‘undoing’ the movement in post process.I find this kind of image processing very impressive, does it exist in any consumer digicams yet? I know image stabilisation is done on some cameras by using a slightly larger sensor than the resulting image, then the camera tries to keep track of detail and so moves the smaller output frame around the captured frame, which works quite well but not as good as this technique.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311887",
"author": "sneakypoo",
"timestamp": "2011-01-22T17:32:04",
"content": "I could’ve used this yesterday when I shot a series of product pics and forgot to disable the IS on the lens (I was using a tripod) *sigh*",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311894",
"author": "Xzibit",
"timestamp": "2011-01-22T17:47:13",
"content": "yo dawg, I herd you like cameras, so I put a camera on your camera so you can photograph while you photograph..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311913",
"author": "Anonymous",
"timestamp": "2011-01-22T18:19:38",
"content": "While this is an interesting tech demo (which will probably find its way into gyroscope-equipped smartphones), practically speaking you’re better off building a device to help stabilize the camera to prevent the blurriness. A lightweight monopod or a homebrew steadycam will get you much nicer looking pictures than this software fix.Treat the cause, not the symptoms.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311950",
"author": "Jordan",
"timestamp": "2011-01-22T20:34:06",
"content": "“yo dawg, I herd you like cameras, so I put a camera on your camera so you can photograph while you photograph..” Totally what I thought. xP@Anonymous: What this means is that you can now attach a small pcb to any camera with a tripod screw and take “stable” pics on the fly without a cumbersome tripod.I think this would be an awesome thing to implement via software on the 3DS (it has an accel & gyro, if I’m not mistaken). Just a thought from a programmer… :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311958",
"author": "Whatmough",
"timestamp": "2011-01-22T20:42:43",
"content": "@Anonymous I think the benifit of this is when you are panning the camera to find a shot. IS can’t help with this blur and steady cams are for video.I’m sure this is being done decently with software alone post process but adding the gyro makes it more accurate.You could always turn this feature on/off like IS but you should also be able to adjust the degree to which it corrects your photo.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311960",
"author": "Whatmough",
"timestamp": "2011-01-22T20:46:42",
"content": "I just found this link. its a patent on this idea I think:http://www.google.com/patents/about?id=91HKAAAAEBAJ&dq=gyroscope+in+a+camera+blur",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311974",
"author": "Rob Wentworth",
"timestamp": "2011-01-22T21:20:22",
"content": "The images that look like crap are using standard deblurring algorithms WITHOUT inertial data. Adding inertial data recorded during image exposure makes a HUGE improvement to the deblurring process.The whole point is to show that image post-processing can be improved with inertial data.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311976",
"author": "Ralf",
"timestamp": "2011-01-22T21:22:12",
"content": "Couldn’t this (in theory) be implemented on an iPhone 4 without any additional hardware?cheers",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312021",
"author": "walt",
"timestamp": "2011-01-22T22:22:18",
"content": "get a patent NOW! this should be in all cameras!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312035",
"author": "Tristan Chambers",
"timestamp": "2011-01-22T22:56:54",
"content": "Dear Microsoft,Impressive project. But get your dirty closed source hands off my open source hardware. No arduino for you! Why don’t you use some dump controller board with WINCE on it or something. Oh wait cause that would FAIL.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312058",
"author": "Dan L",
"timestamp": "2011-01-22T23:37:49",
"content": "Pentax incorporates this feature in most of its high end cameras now (they compensate for vibration and motion by moving the image sensor). Far too late for a patent.The nice thing is that it works for all the old lenses that still fit on the new Pentax DSLR bodies.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312088",
"author": "Anthemion",
"timestamp": "2011-01-23T00:18:10",
"content": "Fancy math implemented in real life with inexpensive hardware. I like this.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312094",
"author": "kmatzen",
"timestamp": "2011-01-23T00:29:57",
"content": "I recall reading about this before I bought my first DSLR. Then when I was looking at how IS worked I was sort of surprised that this idea has been marketed for such a long time. I guess I hadn’t read the paper close enough to see that they defend their work as being better than IS in the sense that IS only can predict future motion and it can only dampen 2D motion.I would like to see a device that contained some sensors and could snap into my camera’s hotshoe. I have no idea if mine has a digital interface like the Samsung “smart shoe”, but that would be a cool way to record data and sync it up with the exposure. I know little about cameras.Oh, I was hoping someone might be able to clarify their calibration process. From what I can understand, the high speed camera is used only for the calibration step. What I don’t understand is whether or not the exposures from the Canon camera are used in the reconstruction or if it’s the the high speed camera images. I mean, I guess there are two things they are calibrating here. They need the intrinsics for the Canon camera, but you don’t need the high speed camera for that part. They also need the 3D reconstruction to optimize the sensor parameters. It’s just unclear to me which technique they used to optimize the sensor parameters or if that’s what they are doing at all. They are using the 3D reconstruction to evaluate their results, so maybe that’s all the high speed camera is used for, validation. After reading the cited paper, I think their intent is to first perform the 3D reconstruction. Then, during their evaluation, they take the high speed photos along with the regular exposure. They find the state of the high speed camera for each exposure. Otherwise, I was confused at first with how they were going to perform bundle adjustment with these narrow-baseline exposures for each regular exposure, but the paper clearly states that wide-baseline exposures are used. At least this is what I can get from it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312098",
"author": "kmatzen",
"timestamp": "2011-01-23T00:37:26",
"content": "Part of my comment was dumb. They do use the hot shoe for triggering. I fail at reading.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312325",
"author": "Mike",
"timestamp": "2011-01-23T07:13:08",
"content": "Tristan: Microsoft employees aren’t allowed to use Arduino boards? Interesting point of view.Also, ironic that HaD’s photo for this article is blurry.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312351",
"author": "punkdigerati",
"timestamp": "2011-01-23T08:02:50",
"content": "Isn’t everything built there already in modern smartphones? Could apps be written to do a similar function?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312353",
"author": "foobar",
"timestamp": "2011-01-23T08:03:21",
"content": "@MikeI interned in a product group one summer and they were really touchy about anything open source for legal purposes. They are in sort of a position where everyone is just waiting to jump at the chance to catch them accidentally shipping some GPL’d code. That’s just the very narrow perspective I got on the issue in a few months. Actually, I think they open sourced one of my projects on CodePlex.My other narrow impression is that MSR is drastically different in culture. This might not be true, but for me, it almost seems like an entirely different company. I think it seems pretty cool based on the publications I see coming out, but then again, I’ve never interned for them, so my opinion is superficial.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312570",
"author": "jaqen",
"timestamp": "2011-01-23T16:51:51",
"content": "@mike: Though unless you took a picture of a mirror, how would you take a picture of a camera with the camera it self? :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312659",
"author": "r_d",
"timestamp": "2011-01-23T19:03:27",
"content": "This is kind of neat, but it’s really impossible to get perfect results from that sort of postprocessing.If you take a look at the high-resolution pictures you will see that there are still very noticeable ringing artifacts. Regardless, I’m impressed at how well this worked.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312678",
"author": "Whatmough",
"timestamp": "2011-01-23T19:38:26",
"content": "Dan LI have the Pentax K7 and love it. Like you said their IS works for vibration and small motion.The way I understand it, this would work for panning motions where the shutter speed isn’t quick enough to stop the action.I would guess that this uses the same logic as any motion debluring effects on in a software package like photoshop. Except here they don’t have to determine the motion from the picture they’re fixing, they can use their gyro data.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312765",
"author": "biozz",
"timestamp": "2011-01-23T22:08:38",
"content": "um or you can hit the vibration reduction button XDi do that on my nikon and i can take shots as long as 2 seconds with ease and without a tripod",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,297.668613
|
||
https://hackaday.com/2011/01/21/fertilizing-a-planted-aquarium-using-air-freshener-hardware/
|
Fertilizing A Planted Aquarium Using Air Freshener Hardware
|
Mike Szczys
|
[
"green hacks",
"home hacks"
] |
[
"air freshener",
"aquarium",
"fertilizer",
"plants",
"pump"
] |
Keeping live plants in an aquarium happy can be quite a chore. One of the frequent rituals is adding fertilizer, which is called dosing. [Majstor76] came up with a creative way to
automatically dose using an air freshener
. He got rid of the canister that holds the scent and re-purposed a hand soap pump to move the nutrient-rich liquid. After the break you can see that there’s no shortage of power to actuate the pump and the powered air freshener base has a delay circuit, allowing for a few different time-release options. As long as the volumetric output is fairly consistent we figure you can dilute your fertilizer to fine-tune the dose.
[youtube=http://www.youtube.com/watch?v=GfeAPtJtP_A&w=470]
[Thanks Chris]
| 34
| 32
|
[
{
"comment_id": "311375",
"author": "JC",
"timestamp": "2011-01-21T22:24:16",
"content": "Cool idea. Maybe something like that could be used to actually water plants…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311379",
"author": "Colecago",
"timestamp": "2011-01-21T22:32:41",
"content": "I added a button to my air freshener as all it had was a timer and a motion sensor. Now my wife can use up canisters 100x faster.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311388",
"author": "Hamtaro",
"timestamp": "2011-01-21T22:46:27",
"content": "And, I was just thinking about mounting one of those things next to the kitty litter box… I need to step up my game and develop a planted aquarium.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "3245874",
"author": "Martin",
"timestamp": "2016-10-28T13:15:30",
"content": "Most kitties do not like artificial stink like perfume. Be careful that you do not toilette-un-train the cat with such a contraption.",
"parent_id": "311388",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "311411",
"author": "DCinNM",
"timestamp": "2011-01-21T23:26:48",
"content": "Aquarium? Only if it is full of water. Don’t you mean Terrarium or Vivarium?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311412",
"author": "BD",
"timestamp": "2011-01-21T23:28:49",
"content": "Those pump bottles are prone to siphoning, so make sure the pipe is oriented somewhat ‘uphill’.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311465",
"author": "ELD",
"timestamp": "2011-01-22T01:09:34",
"content": "“Aquarium? Only if it is full of water. Don’t you mean Terrarium or Vivarium?Posted at 3:26 pm on Jan 21st, 2011 by DCinNM”No, he means aquarium. A heavily planted aquarium is a beautiful thing, not to mention much healthier for the fish. The plants lock up a lot of the nitrates in the water as well as oxygenating the water to make for a healthier environment for the animals inside.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311484",
"author": "Sam",
"timestamp": "2011-01-22T01:52:29",
"content": "When I had a planted aquarium I never had to add fertilizer. That’s the only productive output of the fish, and you’re going to just take that away from them?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311490",
"author": "MS3FGX",
"timestamp": "2011-01-22T02:02:47",
"content": "Very clever idea, simple but effective.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311493",
"author": "Terry",
"timestamp": "2011-01-22T02:09:34",
"content": "It just gets easier and easier to grow weed, doesn’t it?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311494",
"author": "ho0d0o",
"timestamp": "2011-01-22T02:11:45",
"content": "This is one hell of a cool idea. hacking something many households have to do such a cool function!Awesome job.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311515",
"author": "Bill D. Williams",
"timestamp": "2011-01-22T02:32:46",
"content": "A soap bottle? Doesn’t soap like that kill fish?Speaking of killing, would it kill you to turn the Rod Stewart down for a second while you make the video? Just cause you’re living in 1988 doesn’t mean I want to.Oh and, no arduino, no care.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311523",
"author": "Wes",
"timestamp": "2011-01-22T02:51:29",
"content": "@DCinNM: You can plant live plants in an aquarium. From what I can infer from his other two videos, that’s what the guy has.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311552",
"author": "everyone's thinking it",
"timestamp": "2011-01-22T04:17:42",
"content": "@Bill D. Williams STFU troll.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311601",
"author": "andrew",
"timestamp": "2011-01-22T06:12:25",
"content": "Best video evarSeriously, planted aquariums are cool. I have two in my house.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311612",
"author": "Wagner",
"timestamp": "2011-01-22T06:36:03",
"content": "As a fish keeper and member of an fish club I would strongly recommend against the use of any container that has contained soap. Soap residue damages the natural slime coating of fish and allows illnesses to make it’s way through. As well, if there are enough fish to plants and gravel, the plants will get enough nutrients to thrive. For light support you can utilize a shop light – one warm and one cool colored bulb. In addition to the utilization of shop lights and gravel and fish, live fish food such as Daphnia (Water Fleas) and tubiflex worms will introduce plenty of nutrients to keep fish highly colored and the plants growing hardily. If the planted tank does not have fish, the output of the fish bearing tank (minus detrus) a very fine infusion of carbon dioxide gas canister will sustain the plants; however make sure that the surface of the tank is not disturbed by the infusion of gas as surface disruption will counteract the infusion of carbon dioxide.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "900875",
"author": "Whoop DeDoo",
"timestamp": "2012-12-10T06:32:26",
"content": "“As a fish keeper and member of an fish club”Look out, we gots an experts in teh house.",
"parent_id": "311612",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "311698",
"author": "bluewraith",
"timestamp": "2011-01-22T08:49:33",
"content": "I used to have a couple rolls of that exact same tape. Never did know where it came from though, but I always thought it was different.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311724",
"author": "vSaAmTp",
"timestamp": "2011-01-22T09:59:16",
"content": "Winter and Summer?? More Water in Summer…Add this, and (A) and (B) in the potting soil. So the System only works, if the water to low.+9V(A)—————|——(+)Relay(-)—|| |(B)-150Ohm-| | 470Ohm| | || 5,6KOhm || |——(C)—| (C)| / | /|———(B)| |–(B)|| \\ \\0V–|–100KOhm—-(E)———(E)Relay = for the control of the Air Fresher.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311726",
"author": "echodelta",
"timestamp": "2011-01-22T10:03:44",
"content": "Turning stinkbombs into plowshares.Like clean aquariums, bathrooms smell not.Alcohol and aldahydes and esters are hazmat stuff.The freshest air on this planet is billions of years old.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311727",
"author": "vSaAmTp",
"timestamp": "2011-01-22T10:04:35",
"content": "Ups:(A)—————|—-(+)Relay(-)—–|………………|………………..|(B)-150Ohm-|……|………………470Ohm………..|……|………………..|………..|…..5,6KOhm……………|………..|……|——(C)—|……(C)………..|…………./…..|……/………..|———(B)|……|–(B)|………..|………….\\…………\\…….0V–|–100KOhm—-(E)———(E)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311751",
"author": "strider_mt2k",
"timestamp": "2011-01-22T11:09:49",
"content": "Regardless of the plants you grow, it seems like this system COULD be modified for irrigation purposes.Sent from my Haipad M701-R",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311764",
"author": "kobilica",
"timestamp": "2011-01-22T11:39:38",
"content": "Great idea, favorited! Seems great for some green stuff ;).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311770",
"author": "majstor76",
"timestamp": "2011-01-22T11:45:20",
"content": "Hello, im author of the hack. First, im sorry for R.Stewart ;).And thanks for this beeing hack-a-day.Problem with dosers is that they are expensive, peristaltic pump which are used in aquarium hobby are 40$ and up and thats why this hack. There are different levels of hobby and on some higer levels fertilizing aquarium is mandatory or youll grow alge , not plants.If have a Q about device, post here, tnx",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311797",
"author": "Moem",
"timestamp": "2011-01-22T12:28:48",
"content": "What’s so hard about keeping plants in an aquarium? And seriously… fertilizer? Who does that? That’s what fish poo is for. In other words, I agree with Sam.I don’t understand the whole term ‘planted aquarium’. In my world, there is no other kind.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311811",
"author": "ferdinand",
"timestamp": "2011-01-22T13:21:18",
"content": "i dont get it is it a Aquarium? Or Terrarium aquarium whit plants and vis when you put the fertilizer in it are you killing not the visi have never here that pepole put that in there aquarium but i can be rong",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311813",
"author": "zeropointmodule",
"timestamp": "2011-01-22T13:28:01",
"content": "Ascii schematic FAIL :-)This is a brilliant idea, could also be used to regularly add small amounts of anti-ich treatment to an aquarium…FWIW this happens to everyone sooner or later, there is no specific fix and changing the water too often just stresses the fish more.I did wonder about using a slow water change mechanism so that the water is mixed with 0.1% treatment then circulated through a salvaged germicidal lamp housing (via glass tube) before entering the tank to kill any bugs therein..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311817",
"author": "Itwork4me",
"timestamp": "2011-01-22T13:44:24",
"content": "Hmm…hack this into a Liquid Asshttp://www.liquidass.com",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311844",
"author": "Stoneshop",
"timestamp": "2011-01-22T15:23:12",
"content": "@zeropointmodule:We have one aquarium with four newts, and some fifty newt larvae at some point. To have an easy way to take water from the parent’s tank (cyclops as food for the newtlets requires a water change afterwards) I just positioned a plastic jerrycan behind the tank, with a small pump and a siphon. The pump sends water to the jerrycan, the siphon is the other half of the circuit. A tap valve in the bottom of the jerrycan allows you to take water, and you add back fresh water via the filler cap.The advantage is that you don’t have to disturb the main tank (only the water level will change a bit between tapping and replenishing), and any fresh water is slowly mixed in (not really necessary, newts are very tolerant there, but it doesn’t hurt).You could easily expand this setup to have the pump routed through the steriliser, and a widget like this that drips treatment into the jerrycan at the right rate.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311914",
"author": "majstor76",
"timestamp": "2011-01-22T18:24:06",
"content": "And what, lets say, if you have few fish and lots of plants + lots o light and co2? What kind of poo fish have to produce to have enough for plants? Farmer dont depend on dog to shit in crops and lots of people are ferilizing aquariums.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311924",
"author": "Stoneshop",
"timestamp": "2011-01-22T18:56:28",
"content": "@majstor76:you can easily make a doser from a syringe, a small motor with reducing gearbox and a long-enough bolt with a nut. You couple the nut to the gearbox output shaft in such a way that it can turn but not move axially; the bolt presses against the syringe’s plunger and hey presto, every time you turn on the motor, some amount of whatever is in the syringe gets squeezed out. Because of the reducing gear and the further reduction because of the thread lead, the amount can be determined sufficiently precise by simple timing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311970",
"author": "majstor76",
"timestamp": "2011-01-22T21:13:48",
"content": "@stoneshop Yea, i know most of these diy designs for pumps. In aquarium hobby ive seen maybe 10 or so. Ive seen your version but with mechanical timer instead of motor. Some of these designs work, some dont, some are not precise… Some designs are more costly that buying a pump :). This particular dosing pump version in this post is good: cheap and precise, thats what i aim in my designs",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312123",
"author": "Chris",
"timestamp": "2011-01-23T01:10:35",
"content": "Seems a few otherwise experienced aquarists have never encountered a high-tech planted tank.These tanks have more (sometimes *much* more) light than an average tank. Which allows you to get spectacular growth with easy aquatic plants, and also grow more challenging kinds of plants that would otherwise be impossible.Of course, all that light makes plants hungry. They need extra CO2 and frequent fertilization, much more than fish can produce. Let either run out and the algae moves in, so they require some extra care. Autodosers make that care easier.High-tech planted tanks can be absolutely stunning. Look up some pictures of Takashi Amano’s tanks for some examples. Whether it’s worth the extra effort is a personal choice. I have high and low tech tanks, and love them both.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314458",
"author": "noco37",
"timestamp": "2011-01-26T00:15:10",
"content": "@ Chris (Posted at 5:10 pm on Jan 22nd, 2011)Amano style tanks are great, but I prefer the Dutch style tanks more. Less maintenance and pruning.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,297.550263
|
||
https://hackaday.com/2011/01/21/magnetic-digital-scale/
|
Magnetic Digital Scale
|
Mike Szczys
|
[
"Tool Hacks"
] |
[
"ATmega168",
"hall effect",
"magnet",
"scale",
"solenoid"
] |
Above you see
a solenoid being used as a digital scale
. The magnetic field from the coil in the base levitates the platform above, where a load to be measured is place. This floating platform has a permanent magnet in it, hovering above a hall effect sensor in the base. As the distance between that magnet and the sensor changes, the measurable magnetic field changes as well. The hall effect sensor is linear so the measured value can easily be correlated with a weight. In the video after the break [Vsergeev] demonstrates the device using test weights to show off its 0.5 gram resolution. He thinks that with a few hardware improvements he could easily achieve 0.1g accuracy.
[youtube=http://www.youtube.com/watch?v=qcosP8ycwFo&w=470]
| 20
| 20
|
[
{
"comment_id": "311244",
"author": "zool",
"timestamp": "2011-01-21T19:34:17",
"content": "nice",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311280",
"author": "mlseim",
"timestamp": "2011-01-21T20:07:46",
"content": "Accuracy affected by temperature and friction. If your weight was not exactly on center, it would tilt the platform enough to cause slight friction on one side. Temperature affects magnetism also. A typical load-cell scale uses a load cell in each corner of the platform and they are “summed” together. The weight can be placed anywhere on the platform and the results are constant. One might argue that the metallurgy has temperature affects, but not as unstable as temperature and magnetism.But the idea and construction of your magnetic scale is a cool project. Technically, it would be difficult to maintain NIST traceability with the temperature variability alone.I wish I had the time to do projects like yours.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311286",
"author": "Bob",
"timestamp": "2011-01-21T20:14:43",
"content": "You should use four of these and a wide surface. I’m not a big fan of the concentric cylinders though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311310",
"author": "RP",
"timestamp": "2011-01-21T20:36:44",
"content": "Another algorithm for this sort of thing is to use a simple analog feedback loop to keep the platform at a constant height and then use the coil current to indicate total measured weight.You could use an optical knife edge beam-break under the center of the platform for instance to define the target height. Then feed the coil current into an ADC to convert into the output value.An advantage is that you can replace the concentric cylinders with a simple hinge or bendable spring arm. Since the platform will always be at the same height no matter how much is being measured there are no trigonometry issues to deal with and no mechanical stiction issues.Nice project.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311319",
"author": "Joe",
"timestamp": "2011-01-21T20:45:18",
"content": "I’m not a grammar stickler, but I’d like to think that HaD has not been outsourced, since lately they are struggling with the English language.“where a load to be measured is place.”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311324",
"author": "Bob",
"timestamp": "2011-01-21T20:56:24",
"content": "I work in the scale field and know cells like this exist. They are called MFR cells or Magnetic Force Restoration cells. They are really quick and really accurate. But expensive. I am really impressed he built one himself.Most actually do not use a feed back system. They ramp up the power to the coil until the field lifts the weight. And most use a lever arm so the load doesn’t have to be balanced on the cell as well as getting higher capacity or resolution.Still a very cool build.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311338",
"author": "John",
"timestamp": "2011-01-21T21:28:29",
"content": "Maybe I’m missing something, but why does he use a solenoid here? Wouldn’t a plain old permanent magnet work just as well?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311398",
"author": "Bob",
"timestamp": "2011-01-21T23:03:14",
"content": "It does have a permanent magnet. It uses the solenoid to vary the force used to push the magnet up and thus push the weight up. Essentially it is finding the amount of force necessary to counteract gravity and thus find the weight.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311434",
"author": "elektrophreak",
"timestamp": "2011-01-22T00:13:35",
"content": "very nice scale – works excellent from what can be seen in the video!i also love the LCD display used in this project :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311447",
"author": "tiopepe",
"timestamp": "2011-01-22T00:36:48",
"content": "Repair of an electronic scale.http://tiopepe123.blogspot.com/The journal elektor published a similar design speaker and using a switch/optocoupler slot.The measurement is done by measuring the current required to lift the cone detected by the optocoupler cero reference",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311485",
"author": "localroger",
"timestamp": "2011-01-22T01:53:17",
"content": "wow, mlseim beat me to it. While this is a semi-workable scheme, it’s very “semi.” With nearly identical hardware you could get a much better result.First, instead of the tube you use an arrangement of flexures to hold the weigh platform parallel as it is allowed to move up and down. This eliminates friction, but does introduce a lot of alignment difficulties; real scale manufacturers have jigs to keep up the tolerances.Second, instead of measuring displacement you do as RP suggests and vary the coil current to keep the position constant via a null sensor and feedback loop. This has the advantage of eliminating one of the big drawbacks of flexures, being that they want to torque the platform as it rises and falls. With the position constant the flexures don’t have to flex much.This is the way most laboratory balances work, and they can be much more accurate than load cell based scales (which work on the principle of metal deforming a bit as it is stressed, and this deformation slightly changing the resistance of a “strain gage” sensor).The accuracy of a scale is described as “n Max” in the trade, the number of reliably discernable “counts” you can repeatably measure from zero to the highest capacity it can weigh.Single cell strain gage platform cells with integrated flexures are generally good for nMax of 10,000, so a 100 lb scale can resolve 0.01 lb.Multiple cell strain gage based platforms are less accurate for several reasons, and are usually limited to 4,000 or 5,000 counts. This is why a 100,000 lb truck scale weighs in increments of 20 lb.But force restoration balances (using the flexures and null sensor and coil current to return weight) are limited only by the precision of their manufacture. If you’ve got the pockets you can buy scales capable of 100,000 or even a million counts. All such electronic scales work on this principle.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311772",
"author": "Panikos",
"timestamp": "2011-01-22T11:50:17",
"content": "This is one of the nicest discussions with such a wealth of feedback and information I have ever seen on HaD. Thanks to Vsergeev for sharing and the rest of the commentary adding useful tidbits.Very enjoyable reading",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311840",
"author": "kabukicho2001 said,",
"timestamp": "2011-01-22T14:50:17",
"content": "A simple analog scale: coil, battery, magnet, tube and a ruler to calculate.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311890",
"author": "hubert",
"timestamp": "2011-01-22T17:37:17",
"content": "Wow,this is a good discussion, now my idea.Instead of your coil magnet construction you could take an loudspeaker,then take the analog optical feedback as written above.This was a project in an german electronics magazine years ago.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311945",
"author": "dude",
"timestamp": "2011-01-22T20:13:58",
"content": "could you use 2 permanent magnets and a pair or so of hall effects as the magnets push together under load the field between/around them would change measuring this change at different points could compensate for uneven loading and would require less power for portability.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311949",
"author": "mlseim",
"timestamp": "2011-01-22T20:33:22",
"content": "Scales made from companies like Acrison use LVDT’s.http://www.efunda.com/designstandards/sensors/lvdt/lvdt_theory.cfmA platform pivots or tilts on torsion bars andthe “sensor” measure the rod as it moves througha coil.I just thought of the LVDT scales when Hubertmentioned using a speaker. That’s sort of thesame idea as the LVDT.This topic is interesting because there are manydifferent types of electronic scales … all useddepending on the application, amount of weight,accuracy, and cost.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312528",
"author": "zeropointmodule",
"timestamp": "2011-01-23T15:59:01",
"content": "Or you could use three Hall sensors, cheap and nasty optical drives use a 4 pin variant which is functionally identical to the expensive and hard to locate 4 pin leaded trapezoid parts often found in vintage 5 1/4″ drives and old record decks.iirc the outputs are centred on 2.5V and a simple differential amplifer (one LM324) can then be used to feed the microcontroller’s A-D inputs.(ideas swiped from the relevant 4HV forum posts)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313221",
"author": "rackandboneman",
"timestamp": "2011-01-24T10:51:44",
"content": "There are a couple designs using loudspeakers for that purpose to be found in old electronics magazines…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314484",
"author": "Luke",
"timestamp": "2011-01-26T00:51:52",
"content": "Very nice video. Works very well from what you shown. Hope you can keep posting stuff like thisCheers",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4522596",
"author": "Carla Pieterse",
"timestamp": "2018-05-02T19:25:18",
"content": "Hello, well done on this project.I need a high resolution scale (0.1g) with quick dynamic response ( a settling time less than 1 second). I want to use this scale as a reference signal for a control system which controls the dispensing of liquid up to 0.5 ml accuracy. Been looking around, but either the scales settling time is too long or they are too expensive. Any advice? Do you mind sharing the circuit diagram or design details?This would be greatly appreciated.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,297.608755
|
||
https://hackaday.com/2011/01/21/our-beloved-xbmc-hits-ios-devices/
|
Our Beloved XBMC Hits IOS Devices
|
Mike Szczys
|
[
"home entertainment hacks",
"iphone hacks"
] |
[
"apple tv 2",
"atv2",
"cydia",
"ipad",
"repository",
"xbmc"
] |
For those who have been longing to unlock the power of the Apple TV 2 the wait is over.
XBMC is now available for iOS devices
. This isn’t limited to the tiny ARM-based set-top box, but extends to the entire family including iPad and iPhone 4. Included is the ability to play high def video up to 1080p without transcoding. But we think the best feature might be XBMC’s ability to easily stream media over the network from just about any operating system. Goodbye iTunes tethering.
If you’re comfortably using SSH to work with a Jailbroken device,
ATV2 installation
will be a snap as there’s already a source repository to install from.
iPad and iPhone 4 are even easier
, just add the repository in Cydia and install. Wow, when
we first looked in on the new generation of ATV
we really thought it would take longer than it has to see a port of our favorite open source media client. Thanks Team XBMC!
| 21
| 21
|
[
{
"comment_id": "311183",
"author": "John",
"timestamp": "2011-01-21T17:59:06",
"content": "My two questions are:1. I know it only supports 720p but can it output a 1080p signal?2. If so, can it handle full-bluray-bitrate m2ts’s?I’m kind of holding out for the next gen that would supposedly have native support for 1080p.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311208",
"author": "fartface",
"timestamp": "2011-01-21T18:48:42",
"content": "Play 1080p and then scale it back down to 720p. you will not output 1080p on any of those devices.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311213",
"author": "reboots",
"timestamp": "2011-01-21T18:54:35",
"content": "…Unlock the power of the Apple TV 2 to output 720p video? Pending clarification by the XBMC dev team, “play” 1080p seems to mean downscaling to native resolution. And the ATV2 is one of the pitiful minority of streaming media players still limited to 720p. See:http://www.iboum.com/sort/media-player-comparison-table.php",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311215",
"author": "Mike Szczys",
"timestamp": "2011-01-21T19:00:07",
"content": "@Fartface and reboots: I’m fine with the downscaling if it means they can decode the video. Since ATSC is 1080i this means you can record over the air and playback the video without transcoding. For $99 that makes the ATV2 a win as a MythTV frontend (well, using XBMC to playback MythTV recordings).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311246",
"author": "strider_mt2k",
"timestamp": "2011-01-21T19:34:44",
"content": "I admit it, I’m jealous.I’d love to see this for other mobile OSs.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311285",
"author": "Gdogg",
"timestamp": "2011-01-21T20:13:44",
"content": "That’s pretty sweet. I was going to go the nettop route, (xbox isn’t cutting it anymore) but this looks pretty damn decent. Anyone know how to jailbreak an appletv with a windows pc?Anyone know any better setups?Hell… what’s everyone’s opinion on the boxee box?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311322",
"author": "Erik Johnson",
"timestamp": "2011-01-21T20:53:55",
"content": "Hum, it apparently is fixed at 480×320 on iPod/phone, so no “retina” support and the text is muddled",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311329",
"author": "Oliver",
"timestamp": "2011-01-21T21:04:26",
"content": "Would love to see XBMC for the WDTV from western digital.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311341",
"author": "fdawg4l",
"timestamp": "2011-01-21T21:30:57",
"content": "@OliverLooks like XBMC and Sigma are collaborating. It’s doubtful old devices will support XBMC out of the box, but from the blurb, new devices may get it natively. Timeline unknown.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311407",
"author": "Gdogg",
"timestamp": "2011-01-21T23:17:38",
"content": "Ahh.. I was going to buy one tonight and hook it up, but it looks like if you run Windows you can only install a ‘tethered’ jailbreak where you need to plug it in to a laptop every time to boot up. Not cool. I will wait this one out, but $130 (in Canada :s ) is a deal.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311417",
"author": "XBMC^N",
"timestamp": "2011-01-21T23:47:36",
"content": "This is really impressive. The apple TV looks like a pretty much ideal device to mount on the back of a wall-mounted TV — less than 10cm square and 2.5cm thick, only 270 grams.Some 3M command adhesive strips should easily hold it in place. Hell, even hot glue or self-adhesive velcro could do the trick.I would never have pegged apple as the company to release the device that would free our tv from the ugly but awesome old xbox.And certainly not for 100 bucks. Talk about a wife-friendly gadget!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311529",
"author": "pun",
"timestamp": "2011-01-22T03:09:13",
"content": "That’s a nice start, but I can safely say I will never own one of these devices… I hope and pray they’ll find a way to make it run on Android… On a related note, Java makes me angry… :P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311618",
"author": "Chris",
"timestamp": "2011-01-22T07:04:01",
"content": "Hmm This seems promising for $100, may not need to have my htpc hooked up to my tv anymore.With the Atv 2 with xbmc installed can it handle mkv’s and other formats like it? Or is there a better setup like the Atv 2?Just tried out a mkv on ipod xbmc and it cant do it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311620",
"author": "Romen",
"timestamp": "2011-01-22T07:08:55",
"content": "Now.. if they’ve ported XBMC to the frakin iPad etc first.. Why haven’t they make XBOX Media Centre for Xbox 360 yet?! BAH! I say… BAH!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311735",
"author": "anon",
"timestamp": "2011-01-22T10:18:51",
"content": "iPod touch 2G 4.2.1 doesn’t work… Installs fine, application wont load though.Anyone else?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311872",
"author": "doron",
"timestamp": "2011-01-22T16:33:53",
"content": "yep same here, ipod touch 2g 4.2.1 doesn’t work, i believe this works on 4th gen only.and to @Romen about xbmc on 360, if you search around there are countless threads on 360 xbmc port. i think the jist is, 360 is powerpc, xbmc would need to be totally re-written, so i think thats why its never gonna happen. i also believe someone did get it running on the 360, but no hardware acceleration, so no HD essentially.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311873",
"author": "doron",
"timestamp": "2011-01-22T16:35:22",
"content": "@roman, :) i just got it, if they have devs to re-write for arm, hopefully soon they’ll have full time devs to port to ppc",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311925",
"author": "strider_mt2k",
"timestamp": "2011-01-22T18:56:45",
"content": "ppc? As in Pocket PC?Shirley, you jest.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311930",
"author": "doron",
"timestamp": "2011-01-22T19:20:20",
"content": "@strider_mt2k, sorry no, i meant PowerPC, as in what the xbox 360 runs on.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312155",
"author": "electrosthetics",
"timestamp": "2011-01-23T01:58:58",
"content": "I have a first gen ATV here, with the hardware accel card replacing the wifi card in the minipci slot. Works great for everything I’ve thrown at it so far. Rarely there are a few glitches. Still the ATV is slow and cumbersome, lacks kb+mouse support without kernel hacks that don’t work anymore, if I didn’t get it for free I wouldn’t have bothered. (total cost 30 dollars, for the HW accel card, plus hours of time hacking an One For All remote to replace the missing ATV one.)In all honesty, XBMC really shines on a platform with a bit more power, not these hacked devices. With HD resolution videos being the norm now, and spotty HW accel support, it’s simpler to put a old PC to work and have a much better experience with XBMC and Boxee.The thing I miss the most these days is the old XBox controller for browsing media. Analog triggers are brilliant.In other news, check out SubSonic (http://subsonic.org) for music and video streaming from home collections to mobile devices. (iOS + Android) Better than any commercial offering, with a very respected and responsive developer. It’s come a long way, and it’s the only streamer I’ve found that supports terabyte music collections without going pearshaped. (ie Orb, TVersity, etc)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312171",
"author": "jim",
"timestamp": "2011-01-23T02:38:44",
"content": "Suddenly Apple TV is cool",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,299.478169
|
||
https://hackaday.com/2011/01/21/dance-for-a-dollar-with-the-yaytm/
|
Dance For A Dollar With The YayTM
|
James Munns
|
[
"Misc Hacks"
] |
[
"dance",
"facial recognition",
"Never Gonna",
"webcam",
"YayTM"
] |
The
YayTM
is a device that records a person dancing and judges whether or not the dancing is “Good”. If the YayTM likes the dance, it will dispense a dollar for the dancers troubles. However, unless the dancer takes the time to read the fine print, they won’t realize that their silly dance is being uploaded to YouTube for the whole world to see. Cobbled together with not much more than a PC and a webcam, the box uses facial recognition to track and rate the dancer.
The YayTM was made by [
Zach Schwartz
], a student at NYU, as a display piece for the schools
Interactive Telecommunication Program
. Unfortunately there aren’t any schematics or source code, but to be honest, having one of these
evil
embarrassing boxes around is probably enough. What song does the YayTM provide for dancing, you ask? Well, be sure to check it out
here
.
EDIT:
[Zack] has followed up with an expanded writeup of the YayTM. Be sure to check out his
new page
with source code and more info. Thanks [Zack]!
| 22
| 21
|
[
{
"comment_id": "311118",
"author": "Lenny",
"timestamp": "2011-01-21T15:57:57",
"content": "I just got Rick Rolled by HackADay… smh",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311119",
"author": "Magnus",
"timestamp": "2011-01-21T16:03:13",
"content": "“This video contains content from Sony Music Entertainment. It is not available in your country. ”bastards",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311140",
"author": "mrugly",
"timestamp": "2011-01-21T16:36:22",
"content": "You !@#$ what the heck, did you really just do that Hack a day?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311149",
"author": "Truth",
"timestamp": "2011-01-21T16:54:52",
"content": "It was probably the EULA, that is owned by Sony.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311153",
"author": "sp00nix",
"timestamp": "2011-01-21T17:00:09",
"content": "never gonna give you up, never gonna turn around and desert you! *horn toots*mmmm desert.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311154",
"author": "sp00nix",
"timestamp": "2011-01-21T17:01:07",
"content": "http://www.youtube.com/watch?v=02A0ZcA_Ybknuff said.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311160",
"author": "CollinstheClown",
"timestamp": "2011-01-21T17:07:00",
"content": "Omg… I love the Kenya dance…Millions would spit from the YayTM",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311161",
"author": "Aaron",
"timestamp": "2011-01-21T17:10:23",
"content": "Hey, cool, it’s not just that he thinks automated mockery makes some kind of point worth hearing, but he can’t even run a blog with a working comments system. What a goober.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311185",
"author": "Nash",
"timestamp": "2011-01-21T18:05:02",
"content": "i want one. i would dance forever and receive infinite money. it’s like a glitch or an easter egg in a game!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311186",
"author": "Link",
"timestamp": "2011-01-21T18:12:41",
"content": "@ Aaronu jelly",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311216",
"author": "fartface",
"timestamp": "2011-01-21T19:00:56",
"content": "Badgers badgers badgers, mush room mushroom!Seriously… this is a hack? No code, no anything but a “lookie what we did” so there is no proof that it’s not just a hoax with someone watching to press a remote button…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311230",
"author": "strider_mt2k",
"timestamp": "2011-01-21T19:23:18",
"content": "Enforce your own documentation rule, HAD.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311254",
"author": "tantris",
"timestamp": "2011-01-21T19:40:24",
"content": "the description is online at tisch (part of new york university):http://itp.nyu.edu/shows/winter2010/2010/12/12/yaytm/“the piece will notify the user after they have taken the dollar, that they have entered into an agreement to have their used likeness online.”sounds like the prank of an immature sociopath. nyu must not have an ethics commission like other universities do or the instructor (nugent) doesn’t care.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311289",
"author": "FDP",
"timestamp": "2011-01-21T20:19:17",
"content": "ITP is an abysmal program. NYU cons a bunch of rich artsy types into paying enormous sums for a graduate education in arduino and processing. The student projects are almost always poorly conceived and painfully inept in execution. This project is simply a reflection of the environment in which it was conceived.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "312228",
"author": "Joe",
"timestamp": "2011-01-23T04:16:48",
"content": "Someones a little bitter, they reject you?",
"parent_id": "311289",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "311370",
"author": "echodelta",
"timestamp": "2011-01-21T22:09:27",
"content": "Dancing judged from above the waist, wasted! No foot work seen, total defeat! TV censorship from the 1950’s did better.You got to move to the music to move the music.Lame dancing, lame music.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311488",
"author": "xeracy",
"timestamp": "2011-01-22T01:59:16",
"content": "rick? rolled? the? fuck? hack? a? day?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311520",
"author": "Spork",
"timestamp": "2011-01-22T02:45:11",
"content": "Well, ‘least I didn’t get rickrolled. From the comments here it sounds like I didn’t miss out by not clicking on the links.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311536",
"author": "apothus",
"timestamp": "2011-01-22T03:26:35",
"content": "I come to hack a day out of habit now, reliving the hey day of when it was “hack-a-day” in the true meaning of the blogs title. When every photo was a black and white photo of some cobbled together gizmo.I dont mind the arduinos that grace the pages today or the occasional highlighting of a product/device that could be hacked. Sadly Articles like this blatantly disapoint me. Maybe someone could develop a wordpress plugin that asks “does this meet Hack a day standards?” when they press the publish button",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311902",
"author": "Standard Mischief",
"timestamp": "2011-01-22T18:05:00",
"content": "– no documentation? (check)– rickrolled your readers? (check)– not even a link to lame and/or hot chicks dancing? (check)I don’t usually like to go negative, but this was even moer lame than the GIRL who put WHEELS on a DRESSER to make a TOOLBOX.How about making the last line of any “filler” “hack” an appeal to your readers to use the HaD tip line so we don’t have to read crap tomorrow?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312517",
"author": "yuppicide",
"timestamp": "2011-01-23T15:40:06",
"content": "Ahh fuck. Rick Rolled by Hack A Day AND YayTM’s website.Great project.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313467",
"author": "Zach Schwartz",
"timestamp": "2011-01-24T20:12:23",
"content": "Hey, Immature Sociopath here. I added some documentation and a video of me using the Yaytm. Hugs and kisses.http://zachschwartz.com/2011/01/yaytm-documented/",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,299.74541
|
||
https://hackaday.com/2011/01/21/making-boxes-from-soda-cans/
|
Making Boxes From Soda Cans
|
Mike Szczys
|
[
"Misc Hacks"
] |
[
"aluminum",
"box",
"emboss",
"soda can"
] |
This shiny little
box was made from a soda can
. You don’t need much to pull this off; an aluminum can, sand paper, scissors, a ballpoint pen, a straight edge, and some time. The embossing is done with the tip of the pen, but there’s a bit of a trick to it. The designs are first pressed into the metal from the underside of the aluminum. It is then flipped over and the outlines are traced, with one last tracing of the shape from the underside once that is completed. We think you’ll agree that this results in an impressive relief of the design.
This would make a nice project for
that wedding ring
you’ve been carrying around sans-case. Or perhaps this is just what you needed as an enclosure for your next project. You’ll find an instructional video after the break.
[youtube=http://www.youtube.com/watch?v=B7vXNLpVafM&w=470]
[via
Gizmodo
and
Core77
]
| 55
| 47
|
[
{
"comment_id": "311080",
"author": "strider_mt2k",
"timestamp": "2011-01-21T14:18:58",
"content": "That is so cool and clever I might just have to have a go at it!-after this flu or whatever dies down, that is.mehSent from my Haipad M701-R",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311084",
"author": "Korny",
"timestamp": "2011-01-21T14:28:40",
"content": "wow, i like that!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311087",
"author": "Tinker",
"timestamp": "2011-01-21T14:34:30",
"content": "I feel bad saying this. Every relevant definition of ‘hack’ I have found has the word ‘technical’ in it. I think I would call this a ‘make’.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "5515655",
"author": "Elliot Williams",
"timestamp": "2018-11-26T09:30:28",
"content": "Cool.",
"parent_id": "311087",
"depth": 2,
"replies": []
},
{
"comment_id": "6637667",
"author": "Jameson Ndlovu",
"timestamp": "2023-04-30T17:34:05",
"content": "If you feel bad saying probably best just keep it to yourself",
"parent_id": "311087",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "311090",
"author": "Dan",
"timestamp": "2011-01-21T14:43:07",
"content": "It looks as though the sanding of the can isn’t needed, as it becomes the inside of the box?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311095",
"author": "Harry",
"timestamp": "2011-01-21T14:53:50",
"content": "isn’ the metal to thin? i think this cans are not very solid.but they look cool indeed.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311135",
"author": "Brad",
"timestamp": "2011-01-21T16:33:06",
"content": "@Tinker – I’ve heard “hack” defined as a clever solution to a problem. In Eric Raymond’s How to Become a Hacker, he writes, “The hacker mind-set is not confined to this software-hacker culture. There are people who apply the hacker attitude to other things, like electronics or music — actually, you can find it at the highest levels of any science or art. Software hackers recognize these kindred spirits elsewhere and may call them ‘hackers’ too — and some claim that the hacker nature is really independent of the particular medium the hacker works in.”So, is this a hack. I suppose that’s subjective, but I’d say yes. It’s a clever solution to keeping the can out of the landfill (assuming he’s not being a responsible upstanding citizen and recycling it appropriately).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311136",
"author": "Brad",
"timestamp": "2011-01-21T16:34:41",
"content": "@guffguff – Damn phone… I got a call while typing my response. You win this time… :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311139",
"author": "Cricri",
"timestamp": "2011-01-21T16:35:40",
"content": "Neat, and extra points for recycling into something useful!Now that’s all my Christmas presents sorted for next year ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311150",
"author": "Pix3l the B1t",
"timestamp": "2011-01-21T16:58:56",
"content": "An easy way to take the top off is with a can opener, it would probably make a neater cut too :). I know because I did this once (sort of) to make a custom fan shaft mount (with the bottom of another can being the fan and the rest for the shroud).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311151",
"author": "lwatcdr",
"timestamp": "2011-01-21T16:59:01",
"content": "Might I suggest soldering the seams to make it a little stronger.Is it a hack? I don’t know if it is a hack or a craft project but it is pretty cool and very nice looking IMHO so in the end who cares?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311163",
"author": "Khordas",
"timestamp": "2011-01-21T17:16:28",
"content": "@ lwatcdr; You might suggest soldering the seams, but that won’t make aluminum solderable by any convenient or easy method. The crimped corners here are about as nice as you can do with this material. Of course, you could do this with thin copper sheet too, and then soldering it would make a bit more sense.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6715966",
"author": "Rosie Miller",
"timestamp": "2024-01-05T21:09:43",
"content": "You could put copper tape on it and then solder that",
"parent_id": "311163",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "311133",
"author": "guffguff",
"timestamp": "2011-01-21T16:22:15",
"content": "@Tinker: My understanding of ‘hack’ was to take an object with a specific function and change it so that it has another function that it wasn’t originally designed for. It has nothing to do with being ‘technical’.With this definition, many of the things posted here are ‘makes’ if they’ve been build from scratch from raw components, while this post is pretty much a hack in my book. They’ve taken a soda can and changed it into a box.Just my thoughts though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311174",
"author": "RexOfRome",
"timestamp": "2011-01-21T17:36:06",
"content": "Is this a hack? Is an Arduino project a hack? I don’t know. So I propose we establish a panel of experts. It will consist of purists, religious fundamentalists, and right-wing ideologues. They will review all future submissions and only when the panel agrees 100% will the submissions be posted. Some of the experts we will need can be found in these very threads. Hack a Day will be a better and leaner place in the future.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6187150",
"author": "Vicky",
"timestamp": "2019-10-15T00:45:15",
"content": "Hack according to the Cambridge dictionary actually originally meant to cut into pieces! A hack could also be someone whose performance is sub par. What I mean to say is that aluminium can box is a really useful and beautiful creative idea and you could maybe enamel the embossed design to make it even more beautiful?I must try this!!!",
"parent_id": "311174",
"depth": 2,
"replies": []
},
{
"comment_id": "6260306",
"author": "Siggy",
"timestamp": "2020-07-03T16:21:41",
"content": "👊🏻",
"parent_id": "311174",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "311181",
"author": "Lapin1",
"timestamp": "2011-01-21T17:50:53",
"content": "Didn’t we see that on Instructables long time ago?http://www.instructables.com/id/Drink-Can-Tinwork/.Still it is a nice ‘make’",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "2894559",
"author": "janet h",
"timestamp": "2016-01-23T02:59:41",
"content": "Yes, we did.",
"parent_id": "311181",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "311182",
"author": "cpmike",
"timestamp": "2011-01-21T17:55:31",
"content": "We used to make christmas ornaments in elementary school using the exact same method. This isn’t hacky, its crafty. Though the box did come out really nice, I kind of want to make one now.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311184",
"author": "Scott_T",
"timestamp": "2011-01-21T18:02:42",
"content": "looks neat but the fear of blood loss from all the sharp edges makes me hesitant to try this :P",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "311210",
"author": "Itwork4me",
"timestamp": "2011-01-21T18:49:49",
"content": "Wow. Ever hear of gloves? Hackaday has a post on how you can hack a pair to be worn on yer hands to keep your fingers safe from getting cut on the tin can.",
"parent_id": "311184",
"depth": 2,
"replies": [
{
"comment_id": "5515657",
"author": "Elliot Williams",
"timestamp": "2018-11-26T09:31:22",
"content": "NOTAHACK!",
"parent_id": "311210",
"depth": 3,
"replies": []
}
]
}
]
},
{
"comment_id": "311187",
"author": "Fallen",
"timestamp": "2011-01-21T18:17:34",
"content": "Wow, really nice.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311228",
"author": "Erik Johnson",
"timestamp": "2011-01-21T19:20:23",
"content": "@Itwork4me I totally agree, there should also be a warning in every thread to wear solar glasses when looking out a window or venturing outside, as the sun can blind you!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311232",
"author": "strider_mt2k",
"timestamp": "2011-01-21T19:26:30",
"content": "-not to mention it backing up into the mains! :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311238",
"author": "zool",
"timestamp": "2011-01-21T19:31:22",
"content": "pretty cool",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311255",
"author": "Piku",
"timestamp": "2011-01-21T19:41:29",
"content": "well that works rather nicely on my iPad, streaming off my Linux server.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311276",
"author": "CutThroughStuffGuy",
"timestamp": "2011-01-21T20:05:05",
"content": "Soda can liners are made from epoxy and that epoxy almost invariably contains Bisphenol-A (BPA) – a fairly toxic endocrine disruptor, even in small doses.Scraping it or embossing it is very likely to transfer it to your skin (setting aside the concerns with it dissolving into your acidic beverage of choice).Love the technique, don’t love the choice of materials.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311294",
"author": "D_",
"timestamp": "2011-01-21T20:22:44",
"content": "Once one gets the can into a flat peice, a paper cutter might be the best tool to clean up the edges with. Lifes too short to sweat the small sheet, a lot of it’s the small sheet anyway. Does it really matter if’s a cracft, hack, or a make? Besides everything prented here is a make.I”m D_. and I approve of this post to HaD. For me there are too many oh Sheet! need to start over, places for me too attempt. I’d be drinking so much beer to get the raw material, my oh Sheet rate will rech record rates.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311315",
"author": "JamieWho",
"timestamp": "2011-01-21T20:42:55",
"content": "@CutThroughtStuffGuyUm, references?Most soda cans don’t have liners. They are aluminum. Just like the one in the video, that was aluminum on the inside. No epoxy found.I agree about not scraping off the outside labeling from earlier. Why bother if it becomes the inside and you cover it with felt or fabric?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311325",
"author": "Tinker",
"timestamp": "2011-01-21T20:57:33",
"content": "@All who think otherwise. You are expanding the definition of ‘hack’, as are your references. Go to the dictionary. By common usage this isn’t a ‘hack’. It is clever reuse of scrap materials. This is up-cycling. Example, if I weld two gears together and use them for a paperweight it isn’t a hack. It is only important if you want this site to appeal to the majority of the people that come here many times a day. Too many ‘make’ projects and we go somewhere else…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311343",
"author": "darkshadow6921",
"timestamp": "2011-01-21T21:33:18",
"content": "I went to the dictionary:to cut, notch, slice, chop, or sever (something) with or as with heavy, irregular blows (often fol. by up or down ): to hack meat; to hack down trees.I think it will qualify as a hack when I get done trying to do this one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311400",
"author": "jeff",
"timestamp": "2011-01-21T23:07:08",
"content": "I’m not really into cheesy craft boxes but I see an enclosure right there.Just what I needed for some dirty regulator circuit. Now I can heat-sink my mosfets directly to the case, and not wind up with a flashing ball of tape with wires!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311427",
"author": "dave dave",
"timestamp": "2011-01-22T00:06:20",
"content": "I just took an empty toilet paper roll and made it into a tunnel for my hamster, can i have a write up too ?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311435",
"author": "Tony",
"timestamp": "2011-01-22T00:20:06",
"content": "@JamieWho, aluminum cans have a plastics lining, though I don’t think it’s dangerous.@CutThroughtStuffGuy, think about it…With the lining the drink would eat the aluminium, sometimes you find an old can, still sealed but empty. There will be a small hole somewhere where the contents ate thru the can and escaped.Even steel cans get liners sometimes, especially if they have tomatoes. Tomatoes are acidic, they’ll eat the can too.If you drop an aluminium can into caustic soda (drain cleaner), it will eat the aluminum and leave the liner behind. Caustic soda is nasty stuff, it will eat you given the chance.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311450",
"author": "gyro_john",
"timestamp": "2011-01-22T00:37:34",
"content": "I liked it! Thanks for the tips on embossing.@jeff: “flashing ball of tape with wires” … Hah! Yep, I’ve built that. Tnx fr the LOL :-D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311467",
"author": "Derek X",
"timestamp": "2011-01-22T01:11:31",
"content": "Nice Hack, I’m inspired to try it tomorrow.By they way, for all you doubters about whether it’s a Hack or not … my grandfather used to Hack useful things together from other objects when he was a boy in the late 1800’s, and thats what he said, he “Hacked it together”, was the phrase, so he was a Hacker by his own words. I believe the phrase comes from using a Hack Saw to cut up metal objects to reuse.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311486",
"author": "Volkemon",
"timestamp": "2011-01-22T01:53:55",
"content": "@Derek X-THAT is the best definition of ‘HACK’-ing something I have heard. Thanks.To others that think it is too ‘MAKE’ and not enough ‘HACK’- well, break PT’s heart and go to the MAKEblog. I found HAD from being there first, and it is all the same mishmash. Same cake, different icing. All good, however ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311491",
"author": "Volkemon",
"timestamp": "2011-01-22T02:06:12",
"content": "OK… now after watching the video…Wow! What a nice piece of work. And, FWIW, the author uses the term ‘upcycle’. My Grandpa would have said ‘hacked’ also, I am sure.One of the few things I may actually do after seeing here. Nice.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311542",
"author": "RomulusOfRome",
"timestamp": "2011-01-22T03:40:25",
"content": "Always the same “that’s not a hack” rhetoric…As the host of “Schprocket” says, “Your story grows tiresome.”Here’s a better idea: What if the moderator prohibits anyone from posting “that’s not a hack” until that person has submitted at least two projects they’ve built that are examples of what a hack *IS*.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311587",
"author": "Jeditalian",
"timestamp": "2011-01-22T05:40:50",
"content": "Martha Stewart was the ultimate hacker?i’ve long since pondered recycling aluminum cans into aluminum sheets, which become aluminum skins and skeletons for aluminum model vehicles. land, water, but is it light enough for aerial vehicles, that is the question. i know it can’t be as light as balsa",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311835",
"author": "Stevie",
"timestamp": "2011-01-22T14:40:19",
"content": "Tried, got bored, failed –http://i.imgur.com/tfU9V.jpg",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311839",
"author": "strider_mt2k",
"timestamp": "2011-01-22T14:49:56",
"content": "Just tried the cleaning, cutting, and embossing techniques on a tiny sheet I got from a half-size drink can.Pretty easy stuff to do!I can hardly wait to get my hands on some larger cans (hmmm, double entendre anyone?) to try the box forming.Very cool stuff.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311882",
"author": "CutThroughStuffGuy",
"timestamp": "2011-01-22T17:10:25",
"content": "I am very familiar with caustic’s effects on aluminum. We are almost done building an in house, $60,000 anodizing line. Caustic makes short work of aluminum. Acid eats it too although at a slower rate than alkaline caustic soda.If you didn’t spray on a liner, the can would impart a metallic taste to the food and possibly even be broken down by the food or beverage. Since the purpose of the can is to protect its contents, this is no good. So cans have a thin liner. Sort of like how pennies have a thin layer of copper but are really mostly zinc.Here is a video of how aluminum cans are manufactured:http://www.youtube.com/watch?v=V7Y0zAzoggY#t=03m20sIf you skip to about the 3:20 mark, you can see them spraying a “water based” coating. That coating, I guarantee you, is a BPA based epoxy coating. Water soluble, sure. But still BPA based epoxy.Remember the outcry over Nalgene bottles and baby bottles because they contained BPA? Notice how they are no longer on the market? Several countries now ban BPA of any kind in baby products. Do you notice how you never see canned baby food? It is always in glass jars and plastic pouches?Surprise. Almost every single aluminum and steel can contains BPA too – and still does. That means every beer can. Every canned green beans. Every Coke. Every tomato paste. Every beer can.Oh and it *IS* possible to make cans WITHOUT BPA. You know why we have high fructose corn syrup instead of corn syrup in Coke and Pepsi and other sodas? It costs the manufacturers about a penny ($0.01) cheaper. BPA free liners are more expensive – 10 – 15% more expensive. Since there is no outcry from the customers, we have BPA liners.Tetra-Pak products use polyethylene and are BPA free, but those are more of a square “box” rather than a can. Of course, glass containers do not contain BPA.But if you think for a moment that aluminum cans and steel cans have no liner – you are sorely misinformed.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312137",
"author": "Yossarian",
"timestamp": "2011-01-23T01:36:45",
"content": "Regarding BPA and safety:Can’t you just sandblast, sand paper, dremel the inside of the can or apply some sort of polyurethane?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312276",
"author": "CutThroughStuffGuy",
"timestamp": "2011-01-23T05:57:24",
"content": "Aerosolizing the liner seems like it would make it worse. In theory one could find a chemical that dissolves epoxy but not aluminum. But that’s probably a strong fuming acid or something.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312452",
"author": "Tony",
"timestamp": "2011-01-23T12:13:38",
"content": "@CutThroughStuffGuy,Ha, my post should have said ‘without the liner…’ rather than ‘with the liner…’. Geez.Anyway, TreeHugger, who as the name suggests would normally be shrilly agreeing with you, kinda don’t –http://www.treehugger.com/files/2008/04/bpa-danger-from-cans.phpThey say that rather than ‘Almost every single aluminum and steel can’ have a liner with BPA, it’s less than 1 in 5 for aluminium, and perhaps a 1 in 4 overall.Given the average dose of BPA from the soda can also comes with 15 or so teaspoons of suger, it’s fairly low on my list of things to worry about.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312830",
"author": "stefodestructo",
"timestamp": "2011-01-23T23:39:55",
"content": "Opened a can of NOS with a can opener and was amazed how well it worked.I’ll add this to my bag of tricks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313372",
"author": "Whatnot",
"timestamp": "2011-01-24T17:44:37",
"content": "There’s a difference between a ‘tin’ can and an aluminium one, if you come across a soda can without plastic inside now you can assume it’s at least 25 years old and it’s best to not drink the content :)At least that’s my experience, I haven’t seen a soda can without liner in my recollection.Because aluminium has been linked to brain diseases most all western countries put all sorts of limits on it, like not being allowed to make cooking pots from it without some protective covering, and I assume the soda can thing is because it’s so long on the shelf and exposed to various temperatures.The disadvantage is that most plastics release estrogen-hormone-like compounds and as a result now the average male has a lower sperm count that in the old days, no protection is without its flaws it seems.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "2513824",
"author": "JoOhrn",
"timestamp": "2015-04-05T21:16:52",
"content": "Im still confused… if you make the top of the box and it is a 2″ square…. then how can making another box with 3.5″ be the bottom of the box???",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4558239",
"author": "Julia Mccusker",
"timestamp": "2018-05-16T00:33:19",
"content": "Would like go try this project !",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "5834285",
"author": "Kim",
"timestamp": "2019-02-01T21:59:34",
"content": "This is fantastic! I never have large cans, I wonder if a small can will be okay? Thanks for sharing!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6559995",
"author": "Kaz",
"timestamp": "2022-12-27T02:07:47",
"content": "Just gorgeous and great recycling, thanks so much for sharing. Great clear and precise tutorial. Cheers",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,299.875568
|
||
https://hackaday.com/2011/01/20/lego-wah-wah-pedal/
|
LEGO Wah-wah Pedal
|
Mike Szczys
|
[
"Musical Hacks",
"Toy Hacks"
] |
[
"guitar",
"lego",
"pedal",
"trimpot",
"wah-wah"
] |
Here’s
a guitar wah-wah pedal
that [Christian Munk] built. Inside you’ll find a circuit board that he etched and populated
based on this design
but he chose to build the housing out of LEGO. The video after the break gives you an idea of what it sounds like, but for those who’ve stepped on a LEGO piece with bare feet, his pedal pounding might make you cringe!
To manipulate the sound the pedal rocks forward and backward on a center pivot shown above as a grey “nut” sticking out the side of the frame. Inside there’s a system of LEGO gears that turn a trimpot to alter the sound. This might go along nicely with
that guitar amp you hacked together
.
[youtube=http://www.youtube.com/watch?v=_3T1LXIrn_E&w=470]
| 9
| 9
|
[
{
"comment_id": "310421",
"author": "zool",
"timestamp": "2011-01-20T22:14:44",
"content": "kinda cool, better than the amp anyway",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310466",
"author": "Mikey",
"timestamp": "2011-01-20T22:51:51",
"content": "Probably close to (if not the) best musical talent we’ve seen on HaD. The lego enclosure is novel, but I think he’s barefoot for a reason; I’m betting it would break (or at the least get gross) if he wore shoes while using it. So that kind of keeps it away from any kind of stage use.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310596",
"author": "ehrichweiss",
"timestamp": "2011-01-21T02:10:54",
"content": "There are CHEAP volume pedals on ebay that could be used for this. I modded one for my Zoom 509.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310718",
"author": "vonskippy",
"timestamp": "2011-01-21T04:45:02",
"content": "Leave the kiddie toys to the kiddies. Sad when grownups can’t fabricate even the most basic of enclosures.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310797",
"author": "Amos",
"timestamp": "2011-01-21T06:55:53",
"content": "That “nut” is called a bushing in Lego parlance.Also, I echo @vonskippy’s comment about making real enclosures. If this one was just to make sure the circuit worked, that’s fine, but this won’t last through many performances and should be replaced with something more durable (@ehrichweiss’ idea sounds pretty good; I’d go with that if I couldn’t hack something I had or make one from scratch).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310851",
"author": "CarlosAmos",
"timestamp": "2011-01-21T08:33:53",
"content": "I wonder what the chances of someone like vonskippy ever doing anything at all involving either tools or creativity. Curios von, why even bother commenting here like you do? Please answer.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310909",
"author": "smoker_dave",
"timestamp": "2011-01-21T10:04:09",
"content": "Not everyone has room for a fully kitted out workshop and not everyone can afford all the required tools to stock one.Also if you are just tinkering for fun, it would be stupid to go out and buy metal or wood working kit just for your first few projects.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311085",
"author": "strider_mt2k",
"timestamp": "2011-01-21T14:28:59",
"content": "If you glue the pieces together and build it with real-world use in mind, there’s no reason why this wouldn’t last a while…with care.What kind of glue you ask? I have no idea, but I bet someone will.The plastic will chip and break eventually, but that “road patina” might make it even cooler!People get so disdainful over such innocent projects.-and yeah that was a pretty good groove there too.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314050",
"author": "Paul Potter",
"timestamp": "2011-01-25T15:49:33",
"content": "Very cool, and great playing too.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,299.792219
|
||
https://hackaday.com/2011/01/20/guitar-tube-amp-from-junk-hi-fi/
|
Guitar Tube-amp From Junk Hi-fi
|
Mike Szczys
|
[
"Musical Hacks"
] |
[
"amplifier",
"guitar",
"vacuum tube"
] |
[Tristan Chambers] picked up an old speaker box some friends acquired at a yard sale. It didn’t have any inputs, and there weren’t any tuning knobs like a radio would have, so it’s a mystery what this was originally used for. [Tristan] traced out the circuit and figured out where he could input audio signals which allowed him to hook up an iPod, but it was mono and not very loud. He ended building his own vacuum tube preamp from a schematic he found on the Internet so that he could
use it with an electric guitar
. As the video after the break shows, the box not only puts out some pretty good sound but it’s nice and loud too.
[youtube=http://www.youtube.com/watch?v=6V6ZA5AoivM&w=470]
| 21
| 21
|
[
{
"comment_id": "310355",
"author": "Paul Potter",
"timestamp": "2011-01-20T20:38:20",
"content": "That really does rock.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310358",
"author": "Focusrally",
"timestamp": "2011-01-20T20:43:48",
"content": "My grandma has a speaker similar to that which receives a input from a record player through the houses electrical wiring. That could be what it was used for.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310362",
"author": "Erik Johnson",
"timestamp": "2011-01-20T20:47:46",
"content": "Comes with its own 60Hz accompaniment!also, “…the box not [only] puts out some pretty good sound…”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310372",
"author": "jameth",
"timestamp": "2011-01-20T21:00:06",
"content": "I can’t tell if you need to invest in a tuner, or lessons.Maybe both.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310373",
"author": "Alex",
"timestamp": "2011-01-20T21:00:32",
"content": "Love the jumper cable patch cord.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310376",
"author": "Drew",
"timestamp": "2011-01-20T21:04:46",
"content": "he needs to make a tone circuit for it, its clipping pretty bad on the highs",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310382",
"author": "The Cageybee",
"timestamp": "2011-01-20T21:14:23",
"content": "@jameth You read my mind!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310393",
"author": "Justin",
"timestamp": "2011-01-20T21:31:35",
"content": "@DrewHey man, people pay a lot of money for amps with that sort of dirty overdrive (or effects that’ll emulate it.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310462",
"author": "Aero",
"timestamp": "2011-01-20T22:49:30",
"content": "His poor neighbors…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310472",
"author": "Mikey",
"timestamp": "2011-01-20T22:54:30",
"content": "@Aero — agreed.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310480",
"author": "Oren Beck",
"timestamp": "2011-01-20T23:14:33",
"content": "@Focusrally: Yes, there are a few “Carrier Current” speaker systems of the era when 12AT7 and 6AL5 tubes were commonplace. IIRC some Rauland produced models were used in commercial installs for executive suite remotes etc.But, there’s another type of radio with no user accessible tuning settings. FM “SCA” subcarrier channels were used in some cities for services like book reading to the blind, and a doctor’s office network:https://secure.wikimedia.org/wikipedia/en/wiki/Subsidiary_communications_authorityThe “reason” for such a history lesson is to introduce the Hacking utility of a control system used in SCA service. Sub to Barely audible after demod at least- tones activated relays that could “do things” all across a city.Traffic Light time range settings/reversible lanes etc or in background music services-raise/lower volume so one store’s commercials got muted in a competing store or raised in volume on speakers of the advertised stores:> Hacking traffic lights was and is a CRIMINALLY bad idea. But? Hacking the audio boost/mute of SCA services was a test of RF Hacker chops indeed! Made a bit easier of course by looking at the Motorola PL reeds more than one such system used.Sadly- such gear now is almost all history and winding up as excellent re-assignment materials.But knowing the past can explain foibles in re-assignment surgery. shortest explanation= Audio suffered horribly by shoehorning into a SCA subcarrier or carrier current path and oftentimes the amplifier sections tried to expand/equalize that audio in compensation..If Tristan has any identifier data at all- I’d love to see it posted. Oh- This is a neat hack of course..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310495",
"author": "echodelta",
"timestamp": "2011-01-20T23:29:51",
"content": "You should be able to cut out the IF circuit and wire in the preamp, it’s the one with the shield on the socket tween the two IF cans. Already shielded, it and short leads with built in ground will kill hum but not from guitar. This thing must have been a dedicated radio or carrier current campus radio, or big Muzak setup.It is transformer operated, I see, thankful design. There may be caps feeding the RF signal in from the power-line, these can be death caps. Find them and kill. It could be transformer coupled though, but even that don’t have a modern safety rating so clip it out. This coupling could be causing hum also.What causes aspect ratio fubars on video? I can’t stand to watch such. Please check settings and post a test, adjust if necessary then push good vids. Widescrean sucks, westerns made it, we could have done with out that. 3to4 works best on a subject, either a hot model or a hacked model. Some vids on HaD have been clipped off on the right because of this whole aspect ratio mess. I have a test on echodelta9 channel Youtube, it looks great. Stay tuned for a guitar hack soon to be posted that will set standards.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310498",
"author": "Scott",
"timestamp": "2011-01-20T23:32:14",
"content": "Man…I was actually getting a late 60’s garage band flashback there for a second. Must have been the righteous 60hz tones.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310519",
"author": "strider_mt2k",
"timestamp": "2011-01-21T00:20:24",
"content": "That is pretty cool considering.Well done sir!(but yeah get the hum out-then you WAY good!)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310535",
"author": "mjrippe",
"timestamp": "2011-01-21T00:49:56",
"content": "Tristan – Did you solder to the pins of your 12AX7??? Send me your address and I’ll mail you a socket!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310569",
"author": "John",
"timestamp": "2011-01-21T01:24:56",
"content": "He’s ok for a beginner.But he ain’t no KK Downing or Glen Tipton",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310668",
"author": "qwerty",
"timestamp": "2011-01-21T03:55:40",
"content": "Wilko Johnson’s sound!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310671",
"author": "NiGe",
"timestamp": "2011-01-21T04:00:08",
"content": "I recognize this. This was a “wireless” speaker. It would recieve audio over a radio frequency from a device that plugged into the receiver. Then you would put this in another part of your house and plug it in and have a “wireless” system…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310742",
"author": "Tristan Chambers",
"timestamp": "2011-01-21T05:19:32",
"content": "@echodelta the 60hz hum is from two things: the single coil pickup on the guitar and improper grounding in the guitar circuitry, and more importantly the unsheilded audio cable (read: automotive jumper cables) connecting the guitar to the amplifier. There was an IF stage. I removed the tubes early on in the hacking process, and yes it did improve noise.@mjrippe you are a sweet heart. I was totally bumbed when I realized that I didn’t have a socket for the 12ax7. I was hoping to use one from the radio but they had the wrong number of pins. Next time… I might rebuild the circuit because I was getting some internal feedback when I buttoned everything up.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311496",
"author": "seanfalloy",
"timestamp": "2011-01-22T02:13:23",
"content": "that overdrive is almost perfect for most types of music. Not choppy enough for most metal but would be perfect for alot of early heavy metal or rock.Nice work on that sounds great.Now time to learn to shred.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311519",
"author": "c3711",
"timestamp": "2011-01-22T02:39:24",
"content": "no warning or mention of live chasis designs, isolation transformers or the fact that he’s lucky not to have electrocuted himself",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,299.534813
|
||
https://hackaday.com/2011/01/20/zipitbot/
|
Zipitbot
|
Mike Szczys
|
[
"handhelds hacks",
"Robots Hacks"
] |
[
"dsPic",
"i2c",
"servo",
"webcam",
"zipit"
] |
[Nulluser’s] Zipit was fine, but it couldn’t go anywhere on its own. Adding some motors and a microcontroller fixed that issue, and now he’s got
a little robot called the Zipitbot
. That’s a dsPIC board on top which communicates with the Zipit over an I2C bus. Four servo motors provide plenty of power to the wheels,with some extra battery packs nestled between them.
Since the Zipit is running Linux, and already has WiFi hardware, it’s not too hard to add Internet control. With this in mind there’s a webcam on the front to broadcast a video feed for use when controlling it remotely. See a couple of videos of this hack after the break.
Desktop testing
[youtube=http://www.youtube.com/watch?v=Enbi6-u9Wm0&w=470]
Internet control with streaming video
[youtube=http://www.youtube.com/watch?v=ODHTykY63E8&w=470]
[Thanks Rkdavis]
| 22
| 22
|
[
{
"comment_id": "310276",
"author": "XiUiX",
"timestamp": "2011-01-20T19:07:41",
"content": "Its so cute",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310293",
"author": "Metis",
"timestamp": "2011-01-20T19:35:07",
"content": "I can’t understand why I see on HaD all the geeky projects that I imagine, before even I start them :-) Anybody with the same feeling?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310322",
"author": "Jim",
"timestamp": "2011-01-20T20:04:24",
"content": "Why don’t you just save the video from the robot instead of recording you watching the video on your tv? It’s pretty much impossible to see what’s going on…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310327",
"author": "beaglebreath",
"timestamp": "2011-01-20T20:07:59",
"content": "that is great. i love the zipit. only wish i could compile code directly on it.i’ve got my own R2-Z2 under construction. except i’m using the zipit as a handheld display and controller for my droid. i’m using the zipit to display a stream from a wifi-webcam using hunterdavis’ script and mozzwald got me setup with a netcat script to send commands back to my microcontroller to control the motors. I’m now building a mosfet circuit to better control the motors, rather than just on-off controls.glad to another self-aware zipit running around",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310346",
"author": "Doublet",
"timestamp": "2011-01-20T20:27:27",
"content": "Everytime I see a video like that last one I think “There are still people who haven’t discovered CamStudio yet”.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310371",
"author": "Yossarian",
"timestamp": "2011-01-20T20:59:39",
"content": "I know this guy, used to hang out on irc.slashnet.org with him. His page has lots of interesting projects including motorcycles and cars so be sure to hit it up.Didn’t know about the Zipit, though, might have to pick one up!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310475",
"author": "acomputerdog",
"timestamp": "2011-01-20T23:01:08",
"content": "@metisi know EXACTLY what you mean!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310483",
"author": "svofski",
"timestamp": "2011-01-20T23:15:54",
"content": "@beaglebreath: I have a Zipit and I can compile code directly on it. What makes you think you can’t?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310492",
"author": "beaglebreath",
"timestamp": "2011-01-20T23:27:00",
"content": "@svofski: i’m using the debian userland. i’ve tried a half-a$$ed attempt to get gcc working but gave up. i’m also too ignorant to figure out how to cross-compile. so therefore, i’m having to stand on the sholders of giants to get it done.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310512",
"author": "nulluser",
"timestamp": "2011-01-20T23:55:05",
"content": "I did take some POV videos with the capture software:http://www.youtube.com/watch?v=5S9ACVbIgmM",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310513",
"author": "svofski",
"timestamp": "2011-01-20T23:55:09",
"content": "@beaglebreath: if you’re using emdebian, you’re probably stuck with broken dependencies. Your best bet is to bootstrap your own normal, regular debian, without any ubuntutness or emdebtenness and then you’ll have a configurable system with plenty of ram to which you’ll be able to ssh to, apt-get stuff and compile your own ;) Probably debootstrap is a good starting point, I can’t remember well.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310515",
"author": "ShaggyBuffalo",
"timestamp": "2011-01-20T23:56:14",
"content": "I’ve actually had the pleasure to drive this bot.It was quite fun to drive, and I’m planning on stealing it for “Hail Retrieval”. It could wanderout and find me the biggest hail stones.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310525",
"author": "strider_mt2k",
"timestamp": "2011-01-21T00:32:01",
"content": "HOLY CRAP THAT’S COOL!WOW!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310556",
"author": "Ben Wright",
"timestamp": "2011-01-21T00:57:18",
"content": "I spy lego wheels. I have a similar robot drivetrain setup sitting on my desk.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310559",
"author": "Aaron",
"timestamp": "2011-01-21T00:59:45",
"content": "very sweeet project. i know him personally so he let me do some test driving. looks much better in person driving it. everything is probably perfected on it by now. his weapon addons will be sweet :P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310743",
"author": "firestorm_v1",
"timestamp": "2011-01-21T05:21:21",
"content": "I was wanting to do something like this with a Seagate Dockstar. Unfortunately like @beaglebreath, my project suffered the same fate. Also, not being able to communicate via I2C also made things hard considering the hardware I had on hand.Mad props to you, Nulluser for an awesome job.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310828",
"author": "Davo1111",
"timestamp": "2011-01-21T07:37:36",
"content": "I wish there was a commercial version of this that was actually good. (that excludes the rovio)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311076",
"author": "navic",
"timestamp": "2011-01-21T14:05:01",
"content": "Awesome work, I love zipit hacks!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311639",
"author": "Decx",
"timestamp": "2011-01-22T07:47:27",
"content": "Enemy RC-XD inbound.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311653",
"author": "cde",
"timestamp": "2011-01-22T08:10:03",
"content": "@firestorm, the dockstar has i2c on the rtc pins. So whats the issue then?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312062",
"author": "rousselmanu",
"timestamp": "2011-01-22T23:40:44",
"content": "Really nice project. Btw, I’m extremly interested in how you manage to get the images from the usb-camera with the dsPIC. In your source code, it seems like you are using the UART module of the dspic. How can you speak using this module to an USB cam? I can see no code for USB hosting on the dspic. Am I missing sthg ? thx",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312368",
"author": "nulluser",
"timestamp": "2011-01-23T08:41:35",
"content": "@rousselmanuI used the ZipIt to host the USB camera.In principal you could use a microcontroller to host the camera, but it would be pretty ugly.For another project, I implemented a serial camera with the dsPIC:http://www.junklet.net/html/make_page.php?n=microbot",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,299.935586
|
||
https://hackaday.com/2011/01/18/mcp2200-usb-to-serial-chip-hacked-to-do-your-bidding/
|
MCP2200 USB To Serial Chip Hacked To Do Your Bidding
|
Mike Szczys
|
[
"Microcontrollers"
] |
[
"18f14k50",
"mcp2200",
"microchip",
"pic",
"pickit3",
"usb"
] |
Mircrochip has a new USB to Serial converter available called the MCP2200. [Sjaak] suspected that it may have been made from an existing 20-pin PIC and found that reading the device signature with the PICKIT3 shows that the chip is an 18F14K50. Most likely this is running Microchip’s USB stack but it’s hard to tell because chip is code-protected, reading back all zeros. So
he set out to write some replacement firmware
which would provide the same functionality and give you access to the rest of the chip’s features.
There were some speed bumps along the way. The first one is that Microchip’s licensing for their USB stack won’t allow you to open source your firmware. That’s okay, it seems there is already a USB stack that can be ported which doesn’t have this restriction. The second wrinkle in the plan is that [Sjaak’s] code doesn’t come with a VID/PID pair that you can use like V-USB does for AVR chips. But that doesn’t diminish the accomplishment of getting the device to work by echoing back characters it receives. Full USB to serial support with the replacement firmware is on the way.
[Thanks Chris]
| 24
| 22
|
[
{
"comment_id": "308613",
"author": "biozz",
"timestamp": "2011-01-18T22:14:53",
"content": "would it be legal for someone to sell these hacked chips?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308617",
"author": "Erik Johnson",
"timestamp": "2011-01-18T22:25:47",
"content": "Unless you sign some disclosure agreement upon buying the dongle(?), you own it and they can not stop you from using it at your behest. This may be a different story if you buy the chip OEM.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308621",
"author": "realEngineer",
"timestamp": "2011-01-18T22:33:09",
"content": "This is pointless. The chip is infact just a programmed PIC18. Microchip sells these chips for 10 cents more than they would the unprogrammed PIC18 equivalent. The customer is paying for the ease of mind that comes with production volume firmware. While I’m sure the person doing this reverse engineering is learning alot, he/she’s work is technically useless.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "440890",
"author": "Late",
"timestamp": "2011-08-24T13:18:48",
"content": "In fact, MCP2200 is a little bit cheaper than PIC18F14K50 which might suggest that slightly defective PICs might be used to “produce” these USB converters. For example devices that do not meet some analog specs etc.",
"parent_id": "308621",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "308636",
"author": "Henrik Pedersen",
"timestamp": "2011-01-18T23:02:20",
"content": "@realEngineerThis time I can’t help but saying the same thing…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308645",
"author": "Jakezilla",
"timestamp": "2011-01-18T23:05:25",
"content": "Mircrochip ?? It is the first word in the post! lol#corrections",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308647",
"author": "SjaakDP",
"timestamp": "2011-01-18T23:13:50",
"content": "@realengineer: in fact the MCP2200 is 0.33$ cheaper then the real PIC. (1.75U$ for the MCP2200 and 3.08U$ for the 18F14K50, single qty. at mouser).As for most hacks they are useless and more for fun and a ‘just because I can’ factor. Instead of flashing it with just a blinking led (it has this as a bonus) we decided to port the experimental stack written by Honken to it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308676",
"author": "Taylor Alexander",
"timestamp": "2011-01-19T00:29:37",
"content": "Also, this isn’t useless, if, say, you find that there is a product with one of these in it that you want to hack.You could, for example, program it to behave normally, but also have some extra features. Might be cool.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308716",
"author": "GotNoTime",
"timestamp": "2011-01-19T01:40:53",
"content": "@biozzNothing stopping you from buying them and reselling them as reflashed MCP2200s so long as you’re clear about what they are.What you can’t do and it is probably uneconomical to do anyway even with the slight discount is buy MCP2200s, erase them, grind the top clean of any markings and then reprint them as regular PIC 18F14K50s. The internals may be a 18F14K50 but Microchip don’t validate them to be sold as such.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308742",
"author": "DexterF",
"timestamp": "2011-01-19T02:49:20",
"content": "This is an interesting discovery! However the chip has, most likely, faulty peripherals. So, if you’re expecting to have a fully featured 18f14k50 for less money, just remember that if your ADC doesn’t work as expected, it’s not Microchip’s fault… It was already faulty from factory ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308753",
"author": "charper",
"timestamp": "2011-01-19T03:14:07",
"content": "Yikes! That’s actually a pretty scary security hole on Microchip’s part… I would be afraid to use these in any self-respecting product now.If they’re going to recycle a general purpose uC, they should have blown the programming fuses after putting the firmware in it. It’s now possible for some malicious third party (distributor, vendor, neighbor-that-you-let-borrow-your-thingy) to superstitiously alter the software in what should be a completely walled-off black box to do only God-knows what! If, for example, this went in a USB keyboard, the chip could store keystrokes. A special key combo could then order it to spit them back out. Much much more nefarious scenarios could be devised depending on the specific device.Bad, bad Microchip!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "309246",
"author": "cantido",
"timestamp": "2011-01-19T16:32:57",
"content": "A great number of devices have firmware uploaded on connection i.e wifi interfaces… some stuff has firmware in flasm rom you can get access to with basic tools.. your ship has sealed",
"parent_id": "308753",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "308761",
"author": "Spork",
"timestamp": "2011-01-19T03:34:43",
"content": "@CharperReally? So your neighbor/vendor/etc is gonna borrow your keyboard, hack the firmware on the USB chip, give it back, then borrow it again and repeat a keystroke to keylog you? How paranoid are you?This is standard business practice. Limit the functionality of a device by programing it (making it easier to use) and sell it cheaper because of the limitations. I don’t see what the big deal is. I get that the slightly cheaper chip can be re-purposed for the same use as the PIC, but can someone fill me in on why that’s awesome?Don’t misread, I do think reverse engineering is great and it’s wonderful to suspect this from MCP, but I don’t see the ‘unlocking’ part to be amazing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308832",
"author": "Terry",
"timestamp": "2011-01-19T05:18:54",
"content": "Charper,You’re on the right track. It doesn’t really matter if they blew the fuses on the PIC. Reconstructing the code for this chip isn’t a daunting task. With a new PIC soldered in place of the old one containing some additional malicious code it would be nearly impossible for a consumer to ever know their uC was replaced.There are easier exploits but this could tie in well for a various sophisticated attacks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308843",
"author": "charper",
"timestamp": "2011-01-19T05:26:07",
"content": "@SporkI said I wouldn’t want to use this in a product I made.Ok. So flip that scenario around. Say you are selling USB keyboards with this chip in it. Some company buys them and installs them on all their computers. An employee of that company reads this article, and turns a few keyboards into keyloggers. There’s no hardware modifications to be found anywhere, no solder connections, no hardware dongles, nothing. Your reputation as a manufacturer would be scarred at best and you’d find yourself in the middle of a big lawsuit at worst.Also note that the keyb sniffer was just a quick example. I’m sure there are other nefarious uses.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308853",
"author": "cde",
"timestamp": "2011-01-19T05:44:55",
"content": "@ Charper. One, you would have to solder to it to reprogram it. Two, physical intrusion stickers/warranty void if open labels to detect things like this. Three, tons of companies use off the shelf pics and cypress and amtel chips in their products. Now a days they are just the cob instead of dip or smd versions. And as a manufacturer, with contracts with Microchip, any tampering on a large enough scale like that that would lead to a lawsuit, one can be sent to Microchip to verify the code on it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308861",
"author": "Haku",
"timestamp": "2011-01-19T06:09:28",
"content": "Has someone recently been watching that old Tom Selleck film Runaway? where robots go crazy because someone installed a rogue chip in them.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308887",
"author": "Spork",
"timestamp": "2011-01-19T06:52:35",
"content": "@CharperThe paragraphs under my response were not to you, they should have been above.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308965",
"author": "macegr",
"timestamp": "2011-01-19T09:00:08",
"content": "The subversive chip replacement is highly unlikely to happen in this case. Remember, it’s just a USB to RS232 converter: it’s not going to be in a keyboard.Now, I happen to know that a lot of USB Logitech keyboards did in fact use a reprogrammable or replaceable HC08 USB microcontroller. So if you wanted to worry about in-keyboard undetectable hacks, you should have started about 8 years ago.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309099",
"author": "antonye",
"timestamp": "2011-01-19T12:08:41",
"content": "@charper: “superstitiously alter the software”Wow! That must be a new technique I’m not familiar with……although I think you meant “surreptitious” ;-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309148",
"author": "fartface",
"timestamp": "2011-01-19T14:05:03",
"content": "“An employee of that company reads this article, and turns a few keyboards into keyloggers.”News flash, people that work at those companies are smarter than the people here. They knew this stuff a year ago.If you are worried about a chip that would never end up in a keyboard (usb to rs232… do you know how keyboards even work?) then I better not tell you how easy it is to modify a computer’s bios to do the same thing without you knowing it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309197",
"author": "qwerty",
"timestamp": "2011-01-19T15:25:11",
"content": "Very nice hack, just be sure that the other chip peripherals are fully functioning.Some vendors sell partially defective chips by repurposing them to use the peripherals that work then masking or disabling the ones that don’t.Many X GHz computer CPUs, for example, come from X+Y GHz lots where the units proved to be functional only at lower clock frequencies, therefore instead of trashing them , the vendor sells then relabeled at the right frequency.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309444",
"author": "zeropointmodule",
"timestamp": "2011-01-19T22:26:58",
"content": "heh @qwerty one of my friends unlocked a broken X3 and revived the 4th “bad” core, then overclocked it to 4 GHz with water cooling.Amazingly it works perfectly, he thrashed the hell out of it and not so much as a blip.Thanks AMD!(wonders if the bad cores in the Cell chips on the PS3 can be hacked in the same way!)for some applications even a broken core with say one instruction yielding a bad result can be worked around with creative coding.even better, the “bad” cores might only be unstable above certain temperatures, so if you know which instructions break you could feed back current temperature to adaptive code which switches the instructions to a good core in realtime.(scuttles off to try this!)-ZPM",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309455",
"author": "GotNoTime",
"timestamp": "2011-01-19T22:46:31",
"content": "@zeropointmoduleThe hard part is that its difficult to determine what exactly is defective. The exact trigger for the flaws might be only under certain conditions like the other cores are running a specific miax of instructions and you’re trying to run X on the reactivated core and your previous instruction was Y.The CPU manufacturers know how to test all parts of the CPU and will have the necessary tools and equipment to do so. Thats not easy to replicate at home.Just have a look at the published errata for the x86 CPUs and you’ll see some really esoteric bugs along with some really bad ones which are just worked around by the OS.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,299.362907
|
||
https://hackaday.com/2011/01/18/attitude-control-for-a-really-big-rocket/
|
Attitude Control For A Really Big Rocket
|
Mike Szczys
|
[
"Microcontrollers",
"Transportation Hacks"
] |
[
"acs",
"arduino",
"attitude",
"control system",
"nitrogen",
"rocket",
"valve"
] |
If this is meant for a model rocket it must be the biggest we’ve ever seen. [Scott] and [Trevor] took on the task of
building a rocket attitude control system
after reading about some research on the topic. But that researcher only tested the theories using simulations so they set out to build their own. The prototype above has a tank of compressed Nitrogen which can hold up to 3000 PSI. You can begin to understand why this needs to be used with a big rocket. The pressurized gas is connected through a regulator to four valves which feed nozzles around the circumference of the fuselage. An Arduino takes readings from a gyroscope and actuates the gas valves via a relay board.
You can check out the test rig in the video after the break. The prototype is suspended horizontally from a wire and its orientation held at one position by the system. There’s also
a paper
(PDF) if you’re interested in the equations that went into the stabilization control. This system would have been right at home on
that huge sugar rocket
we saw back in October.
[youtube=http://www.youtube.com/watch?v=Mqttm0ay8gk&w=470]
| 42
| 41
|
[
{
"comment_id": "308520",
"author": "spiritplumber",
"timestamp": "2011-01-18T20:19:34",
"content": "This is how attitude control works in a “real” space rocket right?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308539",
"author": "B0SC0",
"timestamp": "2011-01-18T20:58:26",
"content": "Wow I wish I could build a attitude control for my wife.Maybe he means an altitude control device;-)B0SC0",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308566",
"author": "MS3FGX",
"timestamp": "2011-01-18T21:08:50",
"content": "@BOSCONo, it is definitely attitude control. Altitude would be the height the rocket reaches, attitude is the angle it flies at.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308574",
"author": "Turrz",
"timestamp": "2011-01-18T21:16:11",
"content": "@B0SC0 no, its attitude. See dictionary.com definition below.Aeronautics . the inclination of the three principal axes of an aircraft relative to the wind, to the ground, etc.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308575",
"author": "vonskippy",
"timestamp": "2011-01-18T21:18:14",
"content": "I thought any type of guided model rockets was a no no in the States.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308578",
"author": "Durgo",
"timestamp": "2011-01-18T21:21:17",
"content": "This is neat and all, but I doubt it’ll be able to do more than straighten out very minor arcs in the flight. Having worked with high-power hobby rockets myself, it would seem that the other forces (air turbulence, fin flutter, and slight fin misalignment) would have an overwhelming effect on the flight of the rocket and all but drown out the small attitude corrections.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308585",
"author": "RBRat3",
"timestamp": "2011-01-18T21:37:31",
"content": "It doesnt seem to manipulate that mass effectively fast enough for high speed flight path corretions.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308604",
"author": "ESylin",
"timestamp": "2011-01-18T21:59:01",
"content": "It does seem to work well. I like it. I’m interested to see it in flight. However I thought there was a limit on the amount of time you can control a model rocket before your in handcuffs.All things considered it does seem a bit silly to use an arduino for such a project.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308610",
"author": "BeagleBreath",
"timestamp": "2011-01-18T22:10:06",
"content": "I built the electrical controls for a payload on a Nike-Orion rocket. The payload frame was 18″ diameter and 48″ tall. The rocket produced 50-g’s at take-off.We had a larger budget than this project and so concrete forms, plywood and all-thread were not used in our construction.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308623",
"author": "Scott",
"timestamp": "2011-01-18T22:35:51",
"content": "OP here–I guess I should clear up a few things. The system we built was intended to be a testing and prototyping platform, not for actual flight. It is also not intended to be a practical solution to lower-atmosphere attitude control. Mostly we just wanted something we could use to test attitude control algorithms, sensors, and attitude determination algorithms in a zero-g vacuum scenario…on a college student budget.@spiritplumber – Sometimes! Usually while a rocket is still in the atmosphere attitude control is accomplished using gimbaled motors or canards (rotating fins). Once it’s in space, though, canards are useless because there’s no air. The space shuttle and Apollo landers used thrusters in the same way we did, but theirs are/were actually little mini-liquid-fueled rockets (more power). I’m not sure how often cold-gas thrusters are used these days, and there are lots of other attitude control methods like magnetorquers, gravity booms, and spin stabilization. Attitude determination is an even messier problem, and even today these things aren’t easy problems.@ESylin – I guess it seems a little absurd to use an Arduino for a task as non-trivial as attitude control, but I think you’d be surprised at what you can accomplish with cheap technology these days. Using the 16MHz Arduino we were able to integrate the rate gyro readings, run the control algorithm, and send telemetry, all at ~40Hz. The valves take about 0.2 seconds to open and close, so at some point faster control doesn’t buy you a whole lot. People have been building guided rockets for a long time, and while it’s something of a toy now, I suspect that not too long ago an Arduino would’ve been a godsend in terms of performance and usability.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "3090035",
"author": "Daniel Resemini",
"timestamp": "2016-07-16T16:29:23",
"content": "dude, could you, please, send me the link to download the code for your calculations and code?TY",
"parent_id": "308623",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "308627",
"author": "Smoker_Dave",
"timestamp": "2011-01-18T22:40:08",
"content": "This is a safety critical system, someone could potentially die if it goes wrong. And they are controlling it with an Arduino?!Really, that should be done with well designed and implemented code – most likely in assembler (C at a push), utilising at least a watchdog timer as a safety measure. It would not take too long to knock such a system up at all. And it’s much safer than relying on some third party boot loader who you have no real faith in.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308631",
"author": "Scott",
"timestamp": "2011-01-18T22:56:22",
"content": "@Smoker_Dave – The system is really quite benign. Everything downstream of the regulator is between 0 and 100psi. People use an almost equivalent system to play paintball every day. Canned air uses higher pressures. Other than some catastrophic tank failure, what do you think might go wrong that would be prevented by a better flight computer? The Arduino has worked great for us, and at normal operating pressures (~30psi) the setup hardly seems safety-critical.Unrelated, is this you? –>http://www.smokerdave.com/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308635",
"author": "CutThroughStuffGuy",
"timestamp": "2011-01-18T23:00:06",
"content": "The presence of an Arduino (or any microcontroller), does not, by itself, exclude a safety critical system from performing as intended. After all, we went to the moon (several times) using electronics. We fly entire airplanes using fly by wire technology. Most modern cars use fly by wire for acceleration AND braking.It is still entirely possible to build in heartbeat sensors, redundancy and other redundant mechanical systems and fail safer design methodologies to maintain safety.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308650",
"author": "Greycode",
"timestamp": "2011-01-18T23:23:14",
"content": "Hey, you think that if the Apollo people would not have used an Arduino, you are seriously mistaken. They would have jumped on it. They had to make every thing because no one else was making it.@ Scott Loved the use of the concrete form, that was a cool idea.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308687",
"author": "Rob Wentworth",
"timestamp": "2011-01-19T00:50:03",
"content": "Not only is it illegal in the US to do a DIY guided missile, but the US government pressured a foreign government into shutting down Bruce Simpson’s popular DIY cruise missile project in New Zealand:http://defensetech.org/2003/12/09/d-i-y-cruise-missile-shot-down/Comments in a previous HaD posting warn to stay away from guided rockets and stick to prop-driven UAVs.Of course, propellors are not effective in the vacuum of space, where this research project is targetted. ;-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308689",
"author": "Osgeld",
"timestamp": "2011-01-19T00:51:13",
"content": "nevermind the fact the bootloader only runs for 2 seconds to see if there is new software to be um loaded then starts up the program in the leftover space and that it is a atmel STK500 setup and that program is compiled in avr GCCthe haters are usually too wrapped up in imagining things to actually sit down and understand that its the exact same crap with a noobie wrapper and a crappy “ide”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308718",
"author": "Malvineous",
"timestamp": "2011-01-19T01:44:33",
"content": "It doesn’t seem to be taking into account the inertia that each adjustment causes – the very last test showing it rapidly moving left and right because the inertia from each adjustment caused over-correction, which then required an opposite adjustment, which again lasted too long, etc, etc.I’m not sure how difficult it would be to take that into account, but it seems like shortening each burst would result in a slightly slower but more accurate attitude correction.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308722",
"author": "Rocketman2TM",
"timestamp": "2011-01-19T01:56:02",
"content": "Welcome, Hackaday, to the world of high power rocketry. Before you know it, you’ll be checking out LDRS.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308731",
"author": "gregman_1",
"timestamp": "2011-01-19T02:16:01",
"content": "@Scott (OP): As I recall, some geosynch satellites use cold-gas thrusters for fine-tuning orbits. I could swear that we used cold-gas vernier thrusters on a human-rated vehicle but I could be wrong. It wouldn’t make a lot of sense in anything heavy, as cold-gas vernier thrusters are pretty inefficient in a cold vacuum. Nitrogen thrusters will have a specific impulse of around 60-70 seconds, where a bipropellant rocket (like the hypergolic thrusters used in the Mercury, Gemini and Apollo programs) have a specific impulse somewhere around 450 seconds. But for a lightweight hobby rocket, the cold gas makes more sense.And as for the legal implications of a guided hobby rocket, I think that’s ridiculous. The Constellation program was canceled because “orbital spaceflight should be the realm of private companies,” and yet we’re being discouraged from developing these things on our own. Sure, it might look like weapons at first, but then again, the Atlas, Redstone, Titan and Saturn rockets were all developments of ICBMs, the Saturn being a development of Wehrner von Braun’s A-10 ICBM.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308738",
"author": "Scott Nietfeld",
"timestamp": "2011-01-19T02:29:54",
"content": "@Malvineous – The control law does take into account the inertia of the system. However, to do that properly you need to know the inertia of the system and the torque caused by the thruster firings. The torque stays pretty constant, but the inertia drops significantly as we use up gas. So, we have to constantly estimate the angular acceleration caused by the thrusters as the test progresses. You can read about the control law in detail in the paper linked above. We believe the oscillating behavior you’re talking about on the 100psi tests is largely due to the swinging of the payload and the high angular rates achieved. Our rate gyro pegged out on those tests, causing our angular acceleration estimates to get thrown off. The 100psi test was really just to see how quickly we could potentially reorient, not a serious control test.@Rob Wenworth – Any reference to the laws regarding this topic? I can’t seem to find the specific statutes. It would seem pretty silly for the feds to get nervous over a couple college students’ summer project. We didn’t use any information that isn’t freely available online. However, if the guys in black suits show up to take me away feel free to say I told you saj03r2ja",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308775",
"author": "Rob Wentworth",
"timestamp": "2011-01-19T03:59:11",
"content": "I dropped out of the local amateru rocket club when newly required Federal registration and certification was required. You had to pass a test and to agree to be bound by specific rules under “penalty of perjury”., which means that you are entering into a contract that has the potential of criminal prosecution if you break the contract. One of the rules was no guidance systems on the rockets, although that rule was already in effect before the the new rule enforcement, except after entering into a contract you can go to jail for violation of that rule.The Portland State Aerospace Society says “We’re trying to be one of the first amateur groups in the world to make an actively guided rocket”, so they either got a special exemption, or they have not gotten sufficient attention to get noticed by the feds yet.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308777",
"author": "Leithoa",
"timestamp": "2011-01-19T04:02:24",
"content": "active stabilization != guidanceThere are a number of people who create gimballed motor mounts in the highpower rocketry hobby. Yes they have ‘licenses’ under governing bodies such as tripoli &c, but realistically those don’t mean much.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308782",
"author": "Rob Wentworth",
"timestamp": "2011-01-19T04:07:14",
"content": "I dropped out of the local fireworks club for the same reason. Interestingly, the new onerous regulations that clamped down on rockets and fireworks and the ability to obtain interesting chemicals did NOT start with 9/11. It all started with the War On Drugs and related expansionist policies.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308790",
"author": "Rob Wentworth",
"timestamp": "2011-01-19T04:15:50",
"content": "I don’t think that the feds have the manpower to enforce all these laws and regulations, but much like local loitering laws, if you draw too much negative attention, they will use those laws to shut you down.So, just like most things in life, if you want to color outside the lines, you must not draw attention to yourself. Unfortunately, that rules out publishing your results in a popular forum (like the New Zealand DIY cruise missile guy who was shut down by the US feds for getting too much attention).Active stabilization is fine as long as it cannot be interpreted as target acquisition. You must maintain clear intentions and not cross certain lines in such matters.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308811",
"author": "Engineer",
"timestamp": "2011-01-19T04:27:13",
"content": "Typically monopropellants (Hydrazine) are used with a catalyst for attitude control. Cold gas thrusters are not efficient. Its a cool project regardless.Regarding guided rockets: It’s not illegal to put a guidance system of any kind on your hobby rocket. Everyone loves to say it is, and its typically a rule within amateur rocket societies, but there is no law against it in the US. If you think you’ve got the stuff to compete with Raytheon no one is going to stop you. The biggest barrier is the technical difficulty involved in developing these systems. You can’t build a very accurate IMU with MEMs gyros…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308817",
"author": "Rob Wentworth",
"timestamp": "2011-01-19T04:36:04",
"content": "Okay, here are the rules according to PSAS:http://psas.pdx.edu/regulation/They think that their guided rocket plans are okay.Their research looks much more thorough than mine, which was only what our local rocket club supplied us with at the time and seems inaccurate after reading the PSAS conclusions.So, I guess we can follow Grace Hoppers advice about how it is easier to apologize than to get permission. ;-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308821",
"author": "Rob Wentworth",
"timestamp": "2011-01-19T04:41:50",
"content": "A rocket with a really bad attitude:http://psas.pdx.edu/TridentSpin/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308879",
"author": "windextom",
"timestamp": "2011-01-19T06:38:35",
"content": "Cold Gas rockets have simplicity advantages over High Test Peroxide(HTP) however I think the energy density to complexity ratio favors Hydrogen Peroxide as a long term solution.It makes sense to me to proceed with initial research(computer science/IMU/PID tuning) based around a cold gas rocket as a proof of concept, but nitrous oxide hybrids and HTP show the most promise if you desire to achieve aerospace performance without messing with cryogenics or dicking around with BATFE/CPSC red tape.I wonder where the world would be if Samuel Colt had been thrown in the clink for his Nitrous Oxide business? Would we have standardized parts today?The very technology we need in order for our species to explore new frontiers is locked behind red tape and bureaucracy. What better way to inspire innovation than to criminalize the innovative process as “too dangerous”.The “common sense” measures drive innovators underground and discourage children from an interest in science.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308880",
"author": "Drone",
"timestamp": "2011-01-19T06:39:32",
"content": "Hmmm… And today’s government in the U.S. is doing everything it can to cripple the U.S. missile defense program.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309050",
"author": "hcjehg",
"timestamp": "2011-01-19T10:43:51",
"content": "Here is the same thing:http://copenhagensuborbitals.com/gfx/RCS04.jpgfor this one :-)http://copenhagensuborbitals.com/gfx/TychoBrahe_spacecraft_aug2010.jpgThat is Hacking :-DNew liquid engine with 7 tionnes thrust on it’s way.As you may know, the launch this summer was a no go, apparently because of a frozen O2 valve in a heavily forced launch campaign, but follow (and possibly donate to) this cool non-profit project here:http://copenhagensuborbitals.com/There will be a new calmer launch this summer (Let’s hope it does not get to look like the Trident cousin mentioned above)HC",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309063",
"author": "strider_mt2k",
"timestamp": "2011-01-19T11:16:20",
"content": "@Rob WentworthI had the same idea for some wordplay, however you did it before me, and you also did it better.My hat is off to you, sir.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309068",
"author": "Eric",
"timestamp": "2011-01-19T11:23:44",
"content": "Well, it’s not technically a model rocket, but it’s still an amateur rocket, and it’s way bigger and ambitious than this one:http://www.copenhagensuborbitals.com/http://en.wikipedia.org/wiki/Copenhagen_SuborbitalsTheir work is still in progress, but I would really like to see this DIY project completed! The same guys have already built a working submarine, so we’re talking serious hacking here:http://en.wikipedia.org/wiki/UC3_Nautilus",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309092",
"author": "ed",
"timestamp": "2011-01-19T11:53:41",
"content": "Complaints about using arduinos for rocket stabilisation are ludicrous.Do these complainers not realise that Scout rockets used to be able to moderately reliably fly themselves into orbit using a paper tape guidance and control computer? On the avr, the arduino is just a bootloader. It just listens to the serial port after reset and otherwise never gets touched – you just run programs on the bare metal atmega as usual.An arduino is a staggeringly capable device by the standards or orbital rocket computing power. If you can’t stabilise a rocket with it, that’s a reflection on your abilities as an engineer, not the arduino.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309158",
"author": "Henry",
"timestamp": "2011-01-19T14:20:57",
"content": "It’s definitely not the biggest model rocket ;)http://www.youtube.com/watch?v=E4l2aFkZ_VMThe story behind this one is so cool it should probably be featured anyway! Its quite old now though…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309190",
"author": "attrezzop",
"timestamp": "2011-01-19T15:14:08",
"content": "Nifty…I’m no expert on it’s legallity but, even if it is technically illegal I’m sure test flights would be fine. Model rocketeers have been “guiding” rockets for a long time. Look up SunSeeker.As far as rocketry guidelines are concerned I understand there is a provision about putting an explosive payload on a rocket and aiming it at something. This doesn’t mean guidance and it is specifically speaking about explosive payloads.And for those of you touchy about following the letter of the law I’d be more wary of the writing in the Patriot Act. Under that mess using the word “hack” could be considered “terrorist activity”. Hell all of us at this web site could be taken in for participation in a terrorist cell.The bottom line is as long as the right intent is there and reasonable caution has been taken most johnny lawmen will just overlook technical violations.My official legal advice to someone avoiding legal trouble, never leave the house and work for the government.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309198",
"author": "attrezzop",
"timestamp": "2011-01-19T15:26:48",
"content": "A second note. The reason gas is used on the shuttle is for actual spaceflight. Where there is no air fins won’t work no matter how fast you travel.In the atmosphere guidance is achieved mainly with slight adjustments in the motor nozzles. For model rocketry it’s far more efficient to just use fins to control attitude when there is an atmosphere to use as leverage.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310128",
"author": "Shaddack",
"timestamp": "2011-01-20T15:30:07",
"content": "An electric arc assisted thruster could improve the response time of the thruster below the 200 msec needed to open the valve. Turn the nozzles into something resembling an offspring of a carnal relation between a cold gas thruster and a plasma cutter. Once the gas flows, its velocity can be modulated very quickly by igniting and quenching the arc.For atmospheric flight, you may like to consider using plasma for maneuvering; a plasma sheath selectively created over part of the vehicle could work quite like a control surface, by altering the drag over that part. As there are no moving parts involved, the reaction speed and reliability could be drastically improved.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310218",
"author": "Scott",
"timestamp": "2011-01-20T18:00:10",
"content": "@Shaddack – Using an arc to disrupt the thruster gas flow seems like a strange, awesome idea. Do you know of any literature on the subject?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313078",
"author": "ke7eha",
"timestamp": "2011-01-24T06:04:11",
"content": "There should be a new regulation here: If you’re going to claim that something is illegal, cite relevant laws and/or legal precedent.As for the project:You’ll need roll stabilization, which is straightforward to do with rollerons on the wings (rear fins). You could also use the gas to drive fin positioning (you can even work out proportional control with this method)Bang-Bang guidance? it works, and is the minimum time solution. You’re going to use more energy with this control method rather than some sort of proportional method.This is probably ITAR, meaning it’s export controlled. Anything to do with guided rockets (including telemetry) is ITAR in the States. I’m not sure how the law applies to the self-funded amateur enthusiast, I’ve always been on the government funded side (research lab, intern @ NASA JPL). Don’t publish any specifics (e.g. control code) and you should be fine.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "3103904",
"author": "bill",
"timestamp": "2016-07-26T18:17:44",
"content": "difference between “guided” and “attitude Controlled” therein lies the legal problems, should be none for ACS",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "3384170",
"author": "Mahesh",
"timestamp": "2017-01-27T19:27:07",
"content": "Can i get the construction details of the project. It’ll be helpful for my engineering project.thanks in advance",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,299.298821
|
||
https://hackaday.com/2011/01/18/new-years-eve-ball-drop-in-your-kitchen/
|
New Year’s Eve Ball Drop In Your Kitchen
|
Mike Szczys
|
[
"home entertainment hacks"
] |
[
"arduino",
"ball drop",
"christmas ornament",
"New Year's Eve"
] |
[Tech B.] hacked together
a Ball Drop for New Year’s Eve
using stuff he had lying around. The ball itself is an old Christmas ornament that he cut in half and filled with 14 LEDs and a 9V battery. He finished up that portion of the project by gluing the halves back together and adding a hole for the guide rod. The base is made of some cardboard boxes and hides an Arduino, a servo motor, an LCD screen, and the base for the vertical rod. When the last ten seconds of the year are counted down, a servo lowers the ball by unspooling some yarn that loops over the top of the rod. As the yarn is slowly dished out gravity pulls the ball toward its goal. We’ve embedded [Tech B.’s] demonstration video after the break.
[youtube=http://www.youtube.com/watch?v=PQXY_N49KjQ&w=470]
| 12
| 12
|
[
{
"comment_id": "308441",
"author": "Scuzz",
"timestamp": "2011-01-18T18:46:27",
"content": "Neat! Though I was hoping that the ball would have all tri-color LEDs and when it hit the bottom there was going to be some crazy and awesome little light show.This would definitely make me a bit more invested in New Years! Maybe I should build my own?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308454",
"author": "Tech B.",
"timestamp": "2011-01-18T18:56:27",
"content": "I had a tight budget and three days to build it. Trust me, I wanted to do so much more.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308468",
"author": "Caleb",
"timestamp": "2011-01-18T19:08:47",
"content": "am i the only one that was disappointed the first time time they saw the ball drop in nyc? i was expecting explosives. perhaps i shall make my own explosive new years ball!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308474",
"author": "Bill",
"timestamp": "2011-01-18T19:12:34",
"content": "For someone that was bored, looked around and thought “What could I build?”This is awesome. Rock on.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308487",
"author": "Tech B.",
"timestamp": "2011-01-18T19:28:13",
"content": "@CalebIt should be New Years Ball instead of Drop…..I was very disappointed also. They could have at least let the ball drop the full length of the building and let every one see it shatter when it hit the ground.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308637",
"author": "bluewraith",
"timestamp": "2011-01-18T23:02:40",
"content": "Nice, but instead of a servo couldn’t you have used a regular DC motor and PWM to slow it down? Might have saved a few lines of code, and the jerky movements, unless that is the string getting caught or slipping.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308666",
"author": "Stealth-",
"timestamp": "2011-01-19T00:07:32",
"content": "Nice job TechB, looks awesome :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308702",
"author": "vonskippy",
"timestamp": "2011-01-19T01:13:35",
"content": "Someone needs to get out and get a little human interaction.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308721",
"author": "Tech B.",
"timestamp": "2011-01-19T01:48:52",
"content": "@bluewraithThe servo has enough torque to hold the ball at the top, with a regular motor it wouldn’t hold. A friend suggested using a car antenna that retracts.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308768",
"author": "dave dave",
"timestamp": "2011-01-19T03:53:51",
"content": "this is one of the saddest things i’ve ever seen on this site :/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308769",
"author": "Spork",
"timestamp": "2011-01-19T03:54:03",
"content": "@Tech B.Pulleys or gears could reduce torque required by the motor.Things that would be on my wishlist:-LED’s should flash and have reflectors, as well as being inside the ball.-RGB LED’s would be cool but not necessary.-A smooth falling motion would be awesome.-All electronics built in to the ball (including gear motors with rubber wheels for travel) would be amazing to see.-I would remove arduino and LCD as well as using Lion or AA cells to simplify the project.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309010",
"author": "therian",
"timestamp": "2011-01-19T09:29:42",
"content": "such short video radiate so much sadness",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,299.582029
|
||
https://hackaday.com/2011/01/18/phosphorescent-laser-painting/
|
Phosphorescent Laser Painting
|
Joseph Thibodeau
|
[
"Laser Hacks",
"Video Hacks"
] |
[
"glow in the dark",
"laser",
"persistence",
"phosphor",
"scanner"
] |
Here’s a simple and interesting idea that increases the visual persistence of a laser scanner image. Using glow-in-the-dark paint, [
Daito Manabe
] prepares a surface so that the intense light of a laser leaves a trace that fades slowly over time. He’s using the idea to print monochromatic images onto the treated surface, starting with the darkest areas and ending with the lightest. The effect is quite interesting, as the image starts out seeming quite abstract but reveals its self with more detail over time.
As evidenced in the test videos, the bursts of laser scanning are matched to the fade rate of the paint. Therefore it would seem that the time taken to “write” an image is directly proportional to the desired visual persistence of the final image. We wonder, by combining clever timing and variable laser intensity could you write images much more quickly? How hard would it be to use this for moving pictures? With the ability to create your own
tiny laser projector
, and even an
RGB scanner
, there must be a lot of potential in this idea for mind-blowing visual effects. Add portability by using a phosphor-treated projection screen!
Share your ideas and check out the test videos after the break.
[youtube=http://www.youtube.com/watch?v=FUa9UgAZTIY&w=470]
[youtube=http://www.youtube.com/watch?v=Mt_4mfuwTAU&w=470]
| 23
| 23
|
[
{
"comment_id": "308348",
"author": "spiritplumber",
"timestamp": "2011-01-18T17:17:27",
"content": "Ooooh. Now redo Tron with this method. :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308349",
"author": "Shadow",
"timestamp": "2011-01-18T17:20:16",
"content": "Very Cool",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308351",
"author": "phishinphree",
"timestamp": "2011-01-18T17:22:58",
"content": "Not sure which is cooler, the effect or the sound.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308372",
"author": "DarkSim",
"timestamp": "2011-01-18T17:50:53",
"content": "HaD is a little slow, no?http://www.liveleak.com/view?i=9e7_1285076610",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308405",
"author": "fooblah",
"timestamp": "2011-01-18T18:14:01",
"content": "I’m curious about the scanning/drawing algorithm in the second video. Does it look familiar to anyone?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308436",
"author": "fartface",
"timestamp": "2011-01-18T18:43:27",
"content": "What is it with the lame gang signs crap?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308456",
"author": "CristobalGordo",
"timestamp": "2011-01-18T18:58:04",
"content": "I don’t understand what this is at all. What kind of laser scanner are you talking about?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308486",
"author": "ZeUs",
"timestamp": "2011-01-18T19:28:02",
"content": "Oh god that sound’s awesome.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308495",
"author": "Michael Bradley",
"timestamp": "2011-01-18T19:40:30",
"content": "I am curious, what happens if you pop a flash after it starts to fade, would it lighten the entire scene evenly, keeping the picture? That is, if a flash adds an equal amount of energy throughout, it would be like a brightness control of the scene.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308502",
"author": "Jas",
"timestamp": "2011-01-18T19:56:39",
"content": "This is an old idea.http://lm741.posterous.com/new-footage",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308535",
"author": "zeropointmodule",
"timestamp": "2011-01-18T20:50:49",
"content": "neat!sounds like a logical extension of the UV POV display made from an old scanner and UV LEDs.wonder if a variant of this would work using a spinning HDD platter (an old steam driven 5 1/4″ quantum fireball would work well) and glow in the dark sticky plastic sheet from an exit sign?also you can “quench” it by shining IR light on the phosphor.-ZPM",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308536",
"author": "Ken",
"timestamp": "2011-01-18T20:53:32",
"content": "This is similar in principle to how a CRT display works.Energizing phosphors with a sweeping beam.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308540",
"author": "Rob Wentworth",
"timestamp": "2011-01-18T20:58:27",
"content": "I noticed that a green laser also erases (quenches) to glowing parts. Perhaps it is IR leaking through the filter?Using quenching, you could use a flash to activate the entire phosphor, then selectively erase with a green laser (or IR laser)…P.S. What’s with all the “old news” crap? Hackaday brings cool hacks to the attention of HaD readers. Since when is there a freshness date on coolness?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308573",
"author": "ino",
"timestamp": "2011-01-18T21:13:54",
"content": "Dude !! The second video is awesome !",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308579",
"author": "w33d",
"timestamp": "2011-01-18T21:26:11",
"content": "A startup for Laser Video Projection… great circuitry with lcos mirror… at this point i’m stucked at laser polarization trhough micra mirrors…https://sites.google.com/site/chewe3d/Projectes/laserprojector",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308609",
"author": "zool",
"timestamp": "2011-01-18T22:09:45",
"content": "cool, i like the sound too",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308644",
"author": "mowcius",
"timestamp": "2011-01-18T23:05:21",
"content": "+1 on cool sound :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308664",
"author": "Hirudinea",
"timestamp": "2011-01-18T23:57:50",
"content": "Could he use an infrared laser so you don’t see the laser flashes, make it more mysterious, and this could also be used with huge pieces of photographic paper to make pictures.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308674",
"author": "Rob Wentworth",
"timestamp": "2011-01-19T00:20:48",
"content": "@Hirdinea:As reported above, an IR laser quenches (erases) the glowing phosphorescence. This method is used some IR image converters. Focus IR image on ZnS phosphor plate, which quenches it and affects its sensitivity, bias the ZnS with UV, which creates a negative visible image which is scanned by vidicon or CCD imager. Of course, a germanium lens to focus the IR is not cheap. The modern approach is to replace the phosphor with organic films on glass:http://redshiftsystems.com/site/TechnologyProducts/OpticalThermalImaging/tabid/54/Default.aspxTech Challenge #2: Who will make a cheap DIY thermal imager using phosphorescent quenching?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308675",
"author": "Rob Wentworth",
"timestamp": "2011-01-19T00:27:03",
"content": "Here they are doing thermal imaging using the temperature-dependent phosphorescence intensity of the rare earth chelate Eu-TTA (europium (III) thenoyltrifluoro-acetonate) thermosensitive dye:http://www.cell.com/biophysj/abstract/S0006-3495(98)77769-0This seems like a project for Jeri Ellsworth, unless somebody beats her to the punch. ;-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308763",
"author": "Harvie",
"timestamp": "2011-01-19T03:41:13",
"content": "WooHoo! It’s one of the best lo-fi hacks i’ve ever seen! :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309829",
"author": "Malikaii",
"timestamp": "2011-01-20T08:55:37",
"content": "I agree with Ken; this is CRT without the CRT.On a related note, there is a similar idea to what was mentioned about flashes in the Ripley’s Believe It Or Not museum in St. Augustine, FL.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314255",
"author": "corneliusCrab",
"timestamp": "2011-01-25T21:38:09",
"content": "@Hirdinea: already been donehttp://en.wikipedia.org/wiki/LightJet",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,299.418669
|
||
https://hackaday.com/2011/01/18/the-lunchtime-clock-gives-you-12-extra-minutes/
|
The Lunchtime Clock Gives You 12 Extra Minutes
|
Caleb Kraft
|
[
"home hacks"
] |
[
"clock",
"time"
] |
The
Lunchtime clock is a hacked clock
that pulls a sneaky little trick to get you a longer lunch. In this instructible, [Randofo] shows us how he uses an Atmega168 and a realtime clock kit from Adafruit to slow the clock down 20% starting at 11:00 and then speed it back up at 11:45, gaining you an extra 12 minutes of sweet delicious lunch. Not really sure how noticeable this would be? Check out the video after the break. This is pretty hilarious and we can actually think of a few offices where this might work. However, many offices rely on their main network server for actual time keeping leaving this as just an amusing novelty. Still, those with luddite bosses can rejoice in your new-found extended lunch.
[via
Gizmodo
]
[youtube=http://www.youtube.com/watch?v=1SKzo9FfSxk&w=470]
| 41
| 41
|
[
{
"comment_id": "308313",
"author": "mi6x3m",
"timestamp": "2011-01-18T16:15:06",
"content": "I kneel before you, oh great inventor of this clock, for this ought to be the most wonderful device ever engineered, thank you!!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308325",
"author": "Daid",
"timestamp": "2011-01-18T16:34:54",
"content": "http://daid.mine.nu/instructabliss/?url=http://www.instructables.com/id/Lunchtime-Clock/There you go.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308329",
"author": "woutervddn",
"timestamp": "2011-01-18T16:36:44",
"content": "I’m only wondering what it does afterwards? does it speed up from 12h to 14h or what? kinda sucks if you still need to work as long afterwards. + After a week the bloody thing would be an hour late..Besides that this is a great hack, implementing a temporary speed up starting after the lunch until your working day is over would make this THE most awesome thing ever.. (besides real time traveling)I also see kids who might see good opportunity to exploit this :p",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308332",
"author": "Jake",
"timestamp": "2011-01-18T16:40:23",
"content": "Yeah, umm, I don’t know a single place that this would work. Everyone has these devices called “cellular telephones” now, they are personal communication devices that can also keep time!So no. Just no.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308333",
"author": "DanS",
"timestamp": "2011-01-18T16:42:21",
"content": "It needs to speed up at 4:30 so you can get off at 5:00.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308337",
"author": "Carlos",
"timestamp": "2011-01-18T16:46:10",
"content": "@woutervddn: No, it wouldn’t be late at all ’cause it speeds up again in order to get back the right time after lunch. So the 12 minutes would be taken from the mourning, gained on lunch and then the clock would get back on the right time.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308341",
"author": "Gdogg",
"timestamp": "2011-01-18T17:03:58",
"content": "hahaha genius!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308342",
"author": "bWare",
"timestamp": "2011-01-18T17:05:52",
"content": "What would be most interesting is to measure if this had an effect on productivity when it did work. Time is usually much more subjective then we assume.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308345",
"author": "greg",
"timestamp": "2011-01-18T17:08:41",
"content": "In the video it shows the clock speeding up at 11 o’clock, buying you the extra twelve minutes at the beginning of lunch, not at the end. Lunch starts at 12 o’clock on the Lunchtime clock (11:48 real clock), and ends at 1 o’clock on both, so no worries about your end of work time.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308346",
"author": "Brian",
"timestamp": "2011-01-18T17:11:15",
"content": "Anyone still use time cards? Now that would be a hack! I like it, and I suspect this hack is why clocks in high school were so slow. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308347",
"author": "Mitch",
"timestamp": "2011-01-18T17:17:20",
"content": "Oh the fun this would cause on the quaterdeck of a Navy ship!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308361",
"author": "Paul Potter",
"timestamp": "2011-01-18T17:32:47",
"content": "Superb.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308365",
"author": "Eric",
"timestamp": "2011-01-18T17:36:47",
"content": "Now if we could just figure out a way to make the weekend a little longer.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308369",
"author": "Keith",
"timestamp": "2011-01-18T17:45:22",
"content": "Devices that keep time should always be constant and accurate. Daylight savings time should also be done away with. Want more time? Get up earlier, go to bed later, drink more coffee.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308414",
"author": "Author whose work has been copied",
"timestamp": "2011-01-18T18:28:08",
"content": "@DaidIf you are going to copy our work, at least credit the authors appropriately by stating our user names and providing a link to our profiles. You are not currently doing the authors of these articles any favors.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308424",
"author": "xrazorwirex",
"timestamp": "2011-01-18T18:35:09",
"content": "The only way this would work over an extended period of time (assuming you work with old people who only check the actual clock) would be if it sped itself back up to catch up to real-time every night.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308492",
"author": "Michael Bradley",
"timestamp": "2011-01-18T19:32:11",
"content": "Last year I managed a CNC shop, I would have loved to have this on the shop floor, not a problem, would give them extra 12minutes for lunch, but I also want it to slow time down from 8am to 1pm, then speed it up from 1pm to 5pm, for some reason, everyone slowed down the last 3,4 hours of work, so if time apeard to be rockin the that half of the day, these guys would have been more productive!! hmmm, social engineering meets technology!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308508",
"author": "paul",
"timestamp": "2011-01-18T20:07:14",
"content": "@Author whose work has been copiedDaid isn’t trying to steal anyone’s work, he has just created a website that stripes all the annoying parts of instructables away. If I understand how it works correctly, you can pass any instructables address as a variable in his website’s address and get a converted version. I personally hate instructables, thats why I created hackhut.com as a place just for hackers without the need for solutions like daids.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308509",
"author": "Daid",
"timestamp": "2011-01-18T20:08:47",
"content": "@”Author whose work has been copied who might go by the name of Randofo or Randy Sarafan”:Didn’t even think about it. Added the author, with link. It’s not about stealing content, it’s about making it accessible.‘Mission statement’ can be found at:http://daid.mine.nu/instructabliss/also contact details if you want me to take down articles written by you.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308522",
"author": "dbear",
"timestamp": "2011-01-18T20:22:34",
"content": "I too get a sinking feeling when a cool looking project on here ends up being hosted on “instructables”. I hate that site. Please if you’ve got a project invest some time in making a real web site for it. There are plenty of free hosting sites out there.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308526",
"author": "Spork",
"timestamp": "2011-01-18T20:31:01",
"content": "@Michael BradleyThat would be a wonderful social engineering/social experiment. I’d bet most people would work harder given those conditions.Maybe put one in the gym, too. I know lots of people could use an extra 15-20 of workout time.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308529",
"author": "xorpunk",
"timestamp": "2011-01-18T20:33:53",
"content": "What’s funny is you can do it with a single resistor.. xDThey should of used a ARM with linux",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308569",
"author": "Rob Wentworth",
"timestamp": "2011-01-18T21:10:57",
"content": "Umm… using this to extend your lunch would be a good idea if you are tired of working for your current employer. Almost as bad as using one of those $5 timeclock master keys you can get off the internet.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308615",
"author": "zool",
"timestamp": "2011-01-18T22:19:26",
"content": "head out for lunch, boss sees you “hey what are you doing it’s not lunch yet you still have 12minutes”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308634",
"author": "Piku",
"timestamp": "2011-01-18T22:59:01",
"content": "There’s one of those built into my Mac…“Time left: About five minutes”… time passes …“Time left: About a minute”… six minutes later …“Time left: About a minute”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308660",
"author": "Hirudinea",
"timestamp": "2011-01-18T23:46:29",
"content": "I’ve seen this before…http://babysimpson.co.uk/info/lilbastard/1f19.jpg",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308672",
"author": "George Johnson",
"timestamp": "2011-01-19T00:17:22",
"content": "After me and an idiot boss got into a fight over when I was leaving work, I set the clock to world standard (GM time) and almost got fired for changing the clock by about 10/15 seconds “so I could leave early.”Some bosses are REALLY particular about their time clocks, no matter how much “over time” you put by going in early.Here’s a tip for those starting out in the corporate life. If you work extra hours, do it late. They don’t care how early or how hard you work when you go in early. But stay late (even if you do nothing) and you’re a work-a-holic.I got more work done in an hour by going in early than I did in 4 hours in regular time. But they didn’t care.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308704",
"author": "vonskippy",
"timestamp": "2011-01-19T01:18:35",
"content": "Or you can just be a salary worker and not have to be so anal about time in time out lunch breaks etc.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308845",
"author": "BP",
"timestamp": "2011-01-19T05:30:26",
"content": "Did something like this when working up north. Put our watch ahead 1/2 hour before lunch then reset it during lunch giving us a nice leisurely break Worked out great until the foreman thought we were going to be late and raced back to the bunk house in time for coffee break. He always remembered to wear his watch after that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308864",
"author": "Haku",
"timestamp": "2011-01-19T06:15:54",
"content": "Call it the Douglas Adams clock:“Time is an illusion. Lunchtime doubly so.”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309239",
"author": "ryan",
"timestamp": "2011-01-19T16:25:49",
"content": "@vonskippy even when i was a salary worker the boss would go NUTS if you were even 2 minutes late, it all depends on situation.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309261",
"author": "walt",
"timestamp": "2011-01-19T17:19:52",
"content": "very cool hack, i really love the idea. wouldn’t mind having one of these at work. but, i still gotta say it…instructibles BOOOOOOOOOO!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309614",
"author": "Jiremi",
"timestamp": "2011-01-20T02:47:01",
"content": "Does this know if it is day or night, or does it do the speedup/slowdown twice in a 24 hour period?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309623",
"author": "yuppicide",
"timestamp": "2011-01-20T03:05:37",
"content": "Cool idea, but yeah, cellphones do kill it. Also, we have a phone in the break room that displays the time too. The same time is on every phone in the office.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309824",
"author": "Malikaii",
"timestamp": "2011-01-20T08:45:01",
"content": "When I saw the title of this article, this is the first thing to come to mind:http://www.plusnothing.com/images/animatedgifs/TimeForChili.gif",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309861",
"author": "Hmmm",
"timestamp": "2011-01-20T09:00:30",
"content": "Is it just me, or does the lunchtime clock actually move faster than the realtime clock in the video?Maybe I am crazy, but the video is stopped at 0:07 and the lunchtime clock shows 11:40 and the realtime clock shows 11:32. Isn’t the point of the clock to gain time, not lose it?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309863",
"author": "Hmmm",
"timestamp": "2011-01-20T09:01:38",
"content": "“Or you can just be a salary worker and not have to be so anal about time in time out lunch breaks etc.”And as a salary worker you will work 50 hours and get paid for 40.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311167",
"author": "Korny",
"timestamp": "2011-01-21T17:25:20",
"content": "wow, cool :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312170",
"author": "davr",
"timestamp": "2011-01-23T02:38:06",
"content": "@Hmmm: The point is to lose time before lunch, so you get to leave for lunch sooner, and then gain that time back during lunch. If you watch the video all the way through, it ends at 12:00 at the same time as the regular clock.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312770",
"author": "kendon",
"timestamp": "2011-01-23T22:22:14",
"content": "so does it speed up between 11:45 and 5pm to get back the 12 minutes?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "421845",
"author": "joe",
"timestamp": "2011-07-23T19:05:15",
"content": "I remember pulling a similiar trick while still in highschool. We would just foreward the clock to speed up class time. It really worked lol.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,300.012476
|
||
https://hackaday.com/2011/01/18/glimpses-of-a-3d-volumetric-display/
|
Glimpses Of A 3D Volumetric Display
|
Mike Szczys
|
[
"Kinect hacks",
"Multitouch Hacks"
] |
[
"3d",
"autodesk",
"prism",
"pyramid",
"volumetric"
] |
Custom displays are a lot of fun to look at, but this one is something we’d expect to see at a trade show and not on someone’s kitchen table. [Taha Bintahir]
built a 3D volumetric display
and is showing it off in the image above using a 3DS file of the Superman logo exported from Autodesk. In the video after the break you can see that the display is a transparent pyramid which allows a viewer to see the 3D object inside from any viewpoint around the display. Since first posting about it he
has also added a Kinect to the mix
, allowing a user to control the 3D object with body movements.
There’s basically no information about the display hardware on [Taha’s] post so we asked him about it. It works by first taking a 3D model and rendering it from four different camera angles. He’s using a custom designed prism for he display and the initial renderings are distorted to match that prism’s dimension. Those renderings are projected on the prism to give the illusion of a 3D object floating at its center.
We’re hoping to hear more details about how this was designed and what hardware is being used. We’ll post a follow-up if [Taha] shares more information.
[youtube=http://www.youtube.com/watch?v=LuCbx5h1ajU&w=470]
| 37
| 32
|
[
{
"comment_id": "308234",
"author": "Tomatosoup",
"timestamp": "2011-01-18T13:34:14",
"content": "That’s awesome, hope a tutorial or something gets put out",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308245",
"author": "Seth",
"timestamp": "2011-01-18T13:45:54",
"content": "Our future televisions will be pyramids!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308247",
"author": "Phroon",
"timestamp": "2011-01-18T13:46:36",
"content": "You can see the ‘secret’ of the technique for a few frames in the 0:27 to 0:28 range. The top of the box is a computer monitor, so you are seeing a reflection of the S, one for each side of the pyramid, to give you the illusion that the S is suspended inside the volume.However, while the S will apear inside, all parts of it will just be at the same depth. And it isn’t really 3D either; there’s no stereoscopic effect generated by this system. What appears 3D in the video is an artifact of the model being rendered as spinning. The illusion would break down quickly if it was static and you walked around. You would only see four views, one for each face of the pyramid.A very neat demo and an interesting way to display something a depth ‘inside’ an object, but not nearly what the title claims. Great work though!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308250",
"author": "grenadier",
"timestamp": "2011-01-18T13:53:11",
"content": "This is badass.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308251",
"author": "Grovenstien",
"timestamp": "2011-01-18T13:54:30",
"content": "Excellent keep it up Taha! Good to see NUI groupers coming up with more homebrew tech. Would be great to scale up a bit.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308264",
"author": "MadHippo",
"timestamp": "2011-01-18T14:15:36",
"content": "Awesome. Presumably the clever bit is actually in the software skewing the projected images so that they reflect to look like they’re in the middle of the prism.Time will tell, hopefully they’ll release a tutorial!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308267",
"author": "Faelenor",
"timestamp": "2011-01-18T14:21:15",
"content": "That’s interesting, but as far as I know, that’s no 3D volumetric display. That’s just the reflections of flat images. It does give the illusion that the object is floating, but there’s no depth. Yes, you can see it from 4 different angles, but that’s it.It’s a cool thing, but don’t call it 3D volumetric as it is not (or I’m missing something…)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308268",
"author": "Pete",
"timestamp": "2011-01-18T14:21:19",
"content": "This is fantastic. As you said we could really do with a guide on how to make this. I also wonder how big the 3D object in the prism can be made he doesn’t seem to use a lot of it’s volume.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308270",
"author": "Truth",
"timestamp": "2011-01-18T14:31:42",
"content": "Looks like there is a company making product display cases like this since 2008.http://www.engadget.com/2008/10/30/realfictions-dreamoc-3d-holographic-display-demoed-on-video/http://www.realfiction.com/en/I’m guessing that there are 4 projectors in the top projecting the 4 movies down onto the 4 faces of the pyramid.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "308296",
"author": "Caleb Kraft",
"timestamp": "2011-01-18T15:25:56",
"content": "@Truth,A single flat panel mounted above with 4 images on it.",
"parent_id": "308270",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "308279",
"author": "fartface",
"timestamp": "2011-01-18T14:46:09",
"content": "Sorry but no videos of a STATIC 3d object and then moving around it.It’s not a 3d display , it’s a 3d illusion. the rotating objects mask that it’s not a real 3d display.I could be wrong, but until he posts video of a STATIC object, and walks around it videoing the object from all sides, I’m calling it not real.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308290",
"author": "noshbar",
"timestamp": "2011-01-18T15:09:58",
"content": "I saw something similar at CES 2011 and thought it was pretty funky.http://www.youtube.com/watch?v=eUffesb_nhgYou could use a few tiny screens to display the static object from a different angle for each panel, or one large screen that renders different angles to different quadrants I suppose.Sure, it’s not truly 3D, just 4 different angles, but it’s still cool nonetheless.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308299",
"author": "MrX",
"timestamp": "2011-01-18T15:32:31",
"content": "Yes pretty cool. You can do the same using a cylinder, just do the image transformations accordingly.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1816515",
"author": "gunther1901",
"timestamp": "2014-09-12T18:49:23",
"content": "Cylindrical HolographyIt’s been quite some time since this thread was started, but all the naysayers here are wrong my friend. It’s called Cylindrical Holography, and it is gaining ground and already becoming cheaper.http://www.rayhologramart.com/2011_2we.htmlhttp://www.rayhologramart.com/2012_2w.htmlhttp://design-milk.com/hanging-around-at-the-philadelphia-museum-of-art/http://www.holonorth.com/new.htmhttp://www.globalspec.com/reference/34375/160210/chapter-4-4-2-scanner-devices-and-techniques-implementation-of-holographic-scanners“We investigate the computer-generated cylindrical rainbow hologram. Since the general flat format hologram has a limited viewable area, we usually cannot see the other side of the reconstructed object. There are some holograms to solve this problem. A cylindrical-type hologram is well known as the 360-deg viewable hologram. There are two kinds of cylindrical holograms, a multiplex hologram and a laser reconstruction 360-deg hologram. Since the multiplex hologram consists of many 2-D pictures, the reconstructed image is not truly 3-D. In contrast, a laser reconstruction 360-deg hologram has a true 3-D effect. However, since the spatial resolution of the output device is not enough and the calculation amount is huge, there are few reports on computer-generated cylindrical holograms. In our previous study, the computer-generated cylindrical hologram was realized as a Fresnel hologram. The calculation amount was too huge and took about 44h in total calculation time, though we had used several PCs. We now propose the rainbow-type computer-generated cylindrical hologram. To decrease the calculation amount, the rainbow hologram sacrifices the vertical parallax. Also, this hologram can reconstruct an image with white light. Compared with the previous study of the Fresnel type, the calculation speed becomes 165 times faster. After calculation, we print this hologram with a fringe printer, and evaluate reconstructed images.”~http://opticalengineering.spiedigitallibrary.org/article.aspx?articleid=1089238AbstractA fast calculation method for computer generation of cylindrical holograms is proposed. The calculation method is based on wave propagation in spectral domain and in cylindrical co-ordinates, which is otherwise similar to the angular spectrum of plane waves in cartesian co-ordinates. The calculation requires only two FFT operations and hence is much faster. The theoretical background of the calculation method, sampling conditions and simulation results are presented. The generated cylindrical hologram has been tested for reconstruction in different view angles and also in plane surfaces.© 2010 Optical Society of America~https://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-18-25-25546Telepods~http://www.thestar.com/business/2012/05/04/star_trek_comes_to_life_lifesize_3d_hologram_created_by_queens_university_researcher.html~http://www.kurzweilai.net/life-size-3d-hologram-like-telepods-may-revolutionize-videoconferencing~https://www.youtube.com/watch?v=wa5I-D5_sM0",
"parent_id": "308299",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "308331",
"author": "woutervddn",
"timestamp": "2011-01-18T16:39:31",
"content": "I think this would be appropriate:WANT!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308343",
"author": "Nate",
"timestamp": "2011-01-18T17:06:07",
"content": "@ MrXAgreed, but a cone, not a cylinder.Think of it the same way you learn to approximate integration. As you increase the number of faces you decrease the error in approximation of a 3d object. In this way, a cone would be of the correct shape with infinate faces and would show a 3d object correctly.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "308353",
"author": "Caleb Kraft",
"timestamp": "2011-01-18T17:24:01",
"content": "@Nate and MrX,What you are seeing is a reflection from 4 images above the “panes”. This requires that you use a faceted design, with each angle being rendered and “proejcted” from above. A smooth cylinder would break the illusion, a faceted cylinder (or cone) would greatly reduce your display area, while increasing the angles to be rendered.",
"parent_id": "308343",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "308375",
"author": "Nate",
"timestamp": "2011-01-18T17:53:43",
"content": "@CalebSo your saying I’m right?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "308501",
"author": "Caleb Kraft",
"timestamp": "2011-01-18T19:55:13",
"content": "@Nate,loosely. setting the infinite faces aside, lets just say that you had a cone with LOTS of faces. this would mean that each face would be tiny (unless you built the thing the size of a stadium). This means your projected object would also be tiny.So I guess, yeah, you’re right but it wouldn’t be practically sized.",
"parent_id": "308375",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "308427",
"author": "gcat122",
"timestamp": "2011-01-18T18:38:16",
"content": "@ nateas you approach infinite surfaces and infinite viewing angles you need infinite images projected without visual overlap. Difficult.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308445",
"author": "Nate",
"timestamp": "2011-01-18T18:49:32",
"content": "ah, tis true",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308496",
"author": "FDP",
"timestamp": "2011-01-18T19:44:50",
"content": "As Phroon points out, this is not a volumetric display. @Truth mentions the company marketing a product that is similarly designed and described as a “holographic” display (which it is arguably not). This type of system is much closer to smoke & mirrors type parlor trick than holographic or volumetric display. Unfortunately the average consumer has no clue what a holographic display is, and if the object is rotated, as done here, it is harder to spot the illusion.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308497",
"author": "MrX",
"timestamp": "2011-01-18T19:49:33",
"content": "@Nate, gcat122 and CalebI was considering something like this:http://www.youtube.com/watch?v=qQ1AWAzJEH8You can make a 360º panoramic view of an object but that’s all – still no depth:http://www.youtube.com/watch?v=GkWBQsMOa6k&feature=relatedAnd yeah, the effect is not as good as what I was hoping for..",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "308506",
"author": "Caleb Kraft",
"timestamp": "2011-01-18T20:02:38",
"content": "@MrX,That doesn’t account for perspective changes in the object. You could put something together to detect where the person’s face is, and change the image to be the appropriate angle, in which case yours would work quite well. otherwise, you simply can’t change the perspective (no facets to hide the image change)The 4 sided pyramid does this mechanically (without tracking you), by supplying 4 perspectives statically.",
"parent_id": "308497",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "308516",
"author": "Jas",
"timestamp": "2011-01-18T20:14:51",
"content": "THis isn’t 3d, and isn’t volumetric.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308564",
"author": "MrX",
"timestamp": "2011-01-18T21:06:18",
"content": "@Caleb KraftYou are right about the perspective changes. But yeah, with an active setup (tracking sensor) it is even possible to emulate the horizontal parallax.Since we are on it, here it is another cool effect:http://www.youtube.com/watch?v=lFqlQiTTHRsThis one is truly holographic by nature. However we still need to do phase-modulation of light in the place of the source object (they use the real object in this video) if we want to produce computer generated images which is not very convenient.Thanks for topic!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308582",
"author": "Luke",
"timestamp": "2011-01-18T21:30:45",
"content": "The only really decent “real” 3d display I’ve seen is this onehttp://gl.ict.usc.edu/Research/3DDisplay/It actually presents full 3d images, the concept seems scalable, to large display volumes, and the image is mainly only constrained by the capabilities of the device projecting the slice onto the spinning platter (which admittedly, you’d probably need a fast and precise projector, especially to achieve full color.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308658",
"author": "Hirudinea",
"timestamp": "2011-01-18T23:42:39",
"content": "I saw this in “Forbidden Planet”, what is this guy, a Krell?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308776",
"author": "uMinded",
"timestamp": "2011-01-19T03:59:30",
"content": "@LukeI remember that project! Too bad I do not see it as scalable. Imagine a 50″ spinning mirror in cali when theirs an earthquake… Talk about severing family ties!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309233",
"author": "backsy",
"timestamp": "2011-01-19T16:18:06",
"content": "@uMindedI don’t see a problem there as mirrors don’t have to be as fragile as used in everyday life. With modern material science I see it as scalable, but one question comes to mind… Where would a display as such be practical?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309263",
"author": "walt",
"timestamp": "2011-01-19T17:23:14",
"content": "awesome! with the object wasn’t always spinning though. can’t really tell if you’re changing perspective from moving the camera, or if it’s just the rotation.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309380",
"author": "TheSchwa",
"timestamp": "2011-01-19T20:31:26",
"content": "Combine this with johnny lee’s head tracking + a 3D monitor and you would have a display that felt like a true 3D hologram.Anyone have a spare prism, 3D monitor, and a couple Wii remotes?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309467",
"author": "Fatrick",
"timestamp": "2011-01-19T22:58:19",
"content": "Isn’t this a variant of Pepper’s Ghost (like that used in the ballroom of Disney’s haunted house)? A pane of glass at 45 degrees reflects an image illuminated (or in this case, projected) from above/below. This technique dates back to the mid-1800s.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309889",
"author": "Hayk",
"timestamp": "2011-01-20T09:19:46",
"content": "I see this type of 3d display in Moscow in new year, in which was playing animated CocaCola advertisment.A train goes around coca cola bottle.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "371234",
"author": "James",
"timestamp": "2011-03-31T21:25:13",
"content": "I’m no expert but it seems to be a clear example of an old stage illusion called ‘Peppers Ghost’. Google it. The trick is so old that many people have forgotten about it. The 45° glass panels are a giveaway.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "374840",
"author": "haker man",
"timestamp": "2011-04-06T17:56:26",
"content": "NEEED TUTORIAL",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402585",
"author": "ansh",
"timestamp": "2011-06-07T11:46:27",
"content": "@nate,could u suggest me the way how i can do the same….",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,300.419899
|
||
https://hackaday.com/2011/01/17/aquarium-water-exchanger/
|
Aquarium Water Exchanger
|
Mike Szczys
|
[
"home hacks"
] |
[
"aquarium",
"clean",
"pump",
"valve"
] |
If you want happy fish you’re going to need to do regular aquarium maintenance. Part of this is exchanging a portion of the tank’s water on a regular basis. [Bill Porter] came up with
a water exchanger that means less manual labor
, but makes the process just a bit more complicated.
So, what he would do before is fill a few buckets from the aquarium and dump them down the toilet. Then mix up a few buckets of salt water and add them back to the aquarium. This meant carrying several trips worth of heavy, dripping buckets through the house. What he has now is a gravity fed system into the orange bucket with a bilge pump to evacuate the old water from that bucket into the kitchen sink. The bilge can then be used to circulate water through the aquarium and the bucket, while filling with a hose from the kitchen sink and mixing in salt and chemicals. Less trips, no drips, but you’ve got to know what you’re doing with all of those valves.
We love seeing aquarium hacks like [Bill’s], or
cooling the tank lights while heating the water
, or just
a fancy lighting setup
in general. So if you’ve got some of your own, don’t forget to
send in a tip
about them.
| 25
| 25
|
[
{
"comment_id": "307783",
"author": "Ben Wright",
"timestamp": "2011-01-17T23:07:33",
"content": "I hope the PVC glue is fish safe. I know that making acrylic tanks, the regular glue to make the solvent joints might kill a fish or two.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307789",
"author": "Bill",
"timestamp": "2011-01-17T23:14:22",
"content": "Yes the PVC glue was fish safe and I ran many gallons of water through it before installing it.All parts of the build were ‘Fish Store Owner Approved’ by a local fish store owner and friend. I wanted to do this but was nervous as heck to make sure what was fish safe or not.This has been running for a year now with minimal problems. Only fish casualties were from parasitic disease, and stopped after I added a UV sterilizer to the flow.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307794",
"author": "Chuck",
"timestamp": "2011-01-17T23:18:03",
"content": "It’s drinking water safe, so it’s safe for aquariums. Most reef tanks have a ton of PVC (and PVC cement) involved in the sump plumbing; you might see the occasional fish a little tipsy if it hasn’t been allowed to cure thoroughly :-), but outside of that, it’s quite safe.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307805",
"author": "Andrew",
"timestamp": "2011-01-17T23:28:21",
"content": "This is cool. Now put servos on the valves and automate it fully.But on the other hand, why couldn’t you just run the hose from the tank to the drain, then reverse the hose from the tap to the tank. Mix a pinch of salt in the main tank slowly.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307811",
"author": "Bill",
"timestamp": "2011-01-17T23:36:08",
"content": "@AndrewI wanted to automate it, but it was cost-prohibitive for me.And you seem to have little experience with salt water tanks. You have to mix the water with salt and treatment before you put it in the tank, or it will stress/kill the fish. And it’s more then a ‘pinch’ it’s more like a cup of salt per two gallons water.You also have to treat the water before you add salt to remove anything your city adds to the drinking water and fix hardness and PH.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307830",
"author": "CutThroughStuffGuy",
"timestamp": "2011-01-18T00:09:57",
"content": "If you want it to be safe, I would avoid PVC completely – or at least flexible PVC. To make PVC flexible, you add in plasticizers.About 30% by weight is plasticizer.http://www.geocheminc.com/pvcfaqplasticizers1.htmUsually DEHP or other fairly nasty phthalates. The same kind of phthalates in cheap vinyl sex toys (and some medical devices). Really, really nasty stuff for people – let alone for fish which are even more sensitive due to their smaller size, among other factors!Yes, you can buy fish grade or potable water safe PVC hose but I don’t personally think those are truly a good idea. Better than industrial grade tubing, sure but still a good idea? No way.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307833",
"author": "CutThroughStuffGuy",
"timestamp": "2011-01-18T00:12:52",
"content": "Oh – as to automation:Get some “ASCO” brand “Red Hat” type of valves from ebay and a simple arduino (and possibly some relay) would control these pretty well. Or you could go with actuated ball valves if you wanted to get really fancy.Looking at a hundred bucks or so of parts though – might be excessive for this application.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307844",
"author": "paul",
"timestamp": "2011-01-18T00:28:48",
"content": "I used to have fish but the cleaning and water exchanging became to much for something no one in the house appreciated. I can definitely say something like this would have made a HUGE difference. I probably would have screwed up the valves a couple of times but hey.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307932",
"author": "Ryan",
"timestamp": "2011-01-18T03:40:49",
"content": "I think everyone who has fish wished that it was automated.To be honest, the best systems I’ve seen involve trickle filters that have one of those float-valves in the sump to top up evaporation. Just have a valve for waste water and let it trickle or dump a few gallons a day and the top-off system will replace the old water with new water seamlessly. Completely automatic and really cheap (aside from the trickle filter…)Your system is great though and doesn’t rely on plumbing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307935",
"author": "Bill Porter",
"timestamp": "2011-01-18T03:46:23",
"content": "@Ryan,Were those for freshwater systems? You have to treat and mix saltwater before adding it to the tank, so I don’t see how that would be handy for salt systems.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307937",
"author": "Michael Bradley",
"timestamp": "2011-01-18T03:49:13",
"content": "Just curious, if the fishtank was oposite a bathroom wall, could you tap into water from under the sink as well as drain, and automate the entire system? like a perpetual drip system or such??",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307939",
"author": "Chris",
"timestamp": "2011-01-18T03:56:15",
"content": "Nice project, Bill! I like how you used the 12V power from your UPS. I see some robotics on your site too, I’ll check it out fully later. Are there pictures of your actual aquarium somewhere?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307946",
"author": "Bill Porter",
"timestamp": "2011-01-18T04:03:18",
"content": "Thanks Chris,No pictures of the tank itself, I’ll have to search my computer or take some tomorrow. Check back later. It’s a standard 40 deep.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307987",
"author": "mikes",
"timestamp": "2011-01-18T05:10:24",
"content": "Why don’t you go fresh water and build an aquaponic system that requires no water exchange and in exchange gets you fresh herbs or vegetables?http://en.wikipedia.org/wiki/Aquaponics",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307994",
"author": "Bruno goncalves",
"timestamp": "2011-01-18T05:20:42",
"content": "Being an addicted reefer and an avid DIY’er, I really appreciate a good saltwater hack; especially anything that makes maintenance easier.I have my water 100% automated. I’ll explain my setup so non-saltwater guys understand the setup.The way most systems run is with two tanks – one has your fish and the other has your equipment and sits under your main tank, usually refered to as a sump. Water gets pumped up to the main tank and then overflows from the main tank back down into the sump through a hole drilled through the tank and some plumbing.My system has a third tank for water changes. Water gets pumped up to the water change tank my a separate pump and overflows into the sump. There are three float switches in that tank, one three inches from the top another one inch below that one and the third one inch from the bottom.At a set time my controller will shut off the feed pump for a minimum of one minute, in that that time water will siphon back through the pump but because of the height of the nozzle will only drop just low enough to rip the top two floats. The first will keep the pump off until the water change is complete. The second activates a second pump that will pump water out of the water change tank and into the drain until the water level reaches the third and lowest float switch. That switch will shut off the drain pump and activate a third pump that will pump fresh saltwater from a reservoir into the water change tank until it reaches the top float switch – at which point that pump shuts off and the circulation comes back online and a water change is complete; the whole thing takes about 5 minutes. My only involvement is making 180 gallons of saltwater every 9 weeks.One more thing; Bill – do your fish a favor and get a RO unit. The chlorine in the tap water is the least of your concerns. Flouride, Nitrate, Phosfate, Copper and countless other items in your tap water can only be removed with a good Reverse Osmosis/De-Ionization system..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308046",
"author": "Tyler",
"timestamp": "2011-01-18T07:10:03",
"content": "Dig it. More aquarium related hacks!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308055",
"author": "jeditalian",
"timestamp": "2011-01-18T07:26:09",
"content": "I keep my fishies clean & warm and my PC cool by filtering the water through the floor, layered gravel, sand, activated carbon, and a HEPA filter, which circulates through my system and returns back to my fishes as a warm rain. makes neat saltcicles too!.. jk obviously, which you should have caught at the mention of HEPA. actually the cooling system in the pc i’m typing on is a Socket A cooler, copper base, aluminum fins, which came with my ~2ghz socket A athlon, but is held tightly against a socket 939 cpu (64 bit athlonxp4000+)with that copper wiring that is in your walls, which is wrapped around the bolts that held the original heatsinkmount to the board, which are screwed in so far that i had to drill holes in the motherboard pan to be able to mount it in the case.but i would rather set up a watercooling aquarium so it wouldn’t have to clock itself to 1004.53mhz to keep in the 35-41C range, or maybe it’s just doing that because it’s installed in a half-fried motherboard, running a 32 bit OS instead of 64, etc. but i’m going to see how far it overclocks before it explodes since no fish will be harmed in the process.reasons i did this? had no spare socket 939 heatsink, didn’t want to buy, had spare 939 cpu, half-fried motherboard, but with oC capabilities,what’s that? STFU? ok.nice chumbucket you got tharr.use to use the exact same equipment for ‘beer bong’. Seriously. including the red/white pvc valve thingy, and the hose. no glue though, perhaps there was ductape involved, but i remember more like.. pressure coupling or something. AKA sliding stuff on other stuff really tight so there’s no leaks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308186",
"author": "Mike",
"timestamp": "2011-01-18T11:21:42",
"content": "Man, people are so critical here.I used to work for an environmental company that did testing for the EPA using live fish. All of fish tanks, equipment etc. was in some way or another connected with miles of PVC. It’s safe, and there are special glues that are also safe.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308248",
"author": "fartface",
"timestamp": "2011-01-18T13:49:23",
"content": "Buddy of mine did this years ago for his reef tank, but it was completely automated. He had a makeup water creation tank from a pair of 5 gallon stainless soda kegs. salt is metered in, a mixing rod blends it as the RO-water is added and then it sits for 24 hours before the water change out is ran.Not really a “Hack” but simply using normal industrial process ideas on a small scale.I did this for a 95 gallon freshwater setup as well, but all I needed was one solenoid valve to divert the pump from filtering to empty the 35 gallon sump. I could empty faster than the water makeup could fill it, so I simply pumped it out, shut off the pumps, wait for the float switch to activate showing it was above safe level and restart the pump. Hard part was plumbing the water and drain to the tank location.Freshwater you can use simple soda soloniods. Saltwater my buddy had to make arms to move plastic valves as you cant have any brass in stream for saltwater. His tank monitor and AMX processor did all the work even reporting PH and salinity.Water change was easy, his reef motion system was cool. he used a pump to make waves in the sump and had the sump hydrostatically connected to the tank via underwater spray bars. it made the water slosh back and forth simulating wave action.. His corals grew so fast he was giving them away and selling fragments weekly at local shops to cover his tank expenses. (Plus he had 3000 watts of metal halides abov the tank.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308310",
"author": "Curtman",
"timestamp": "2011-01-18T16:12:13",
"content": "Too many manual valves. Needs more solenoids.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308320",
"author": "cgmark",
"timestamp": "2011-01-18T16:28:52",
"content": "I have some aquarium related projects that I am going to be putting up soon. I wanted to thoroughly test them and get all the bugs worked out before making it public. So far they have been working over 2 months without a bug so about ready. Uses pics, one wire devices, relays and has an lcd display.for control valves a really cheap source is sprinkler valves. Connect them to a wall adapter and a relay and you can control water easily.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308326",
"author": "cgmark",
"timestamp": "2011-01-18T16:35:30",
"content": "@mikeso very true. Sometimes people with aquariums are a little over protective. For example they often quote the 100% silicone being sold in caulk guns as not aquarium safe and needing special aquarium safe silicone because the label reads not recommended for aquariums. The reason that is there is because they do not want to be sued if someone uses it and the tank fails. Some even get hung up on the , it will leach into the tank because it is acetic cured, failing to realize that when dry silicone doesn’t have any of the acetic acid left.The aquarium supply companies make a killing off using everyday plastics and chemicals and re-labeling them fish safe.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308330",
"author": "Bill",
"timestamp": "2011-01-18T16:39:08",
"content": "@Bruno goncalvesO man, quite a setup, but would be mucho overkill for my modest 40 deep w/ canister filtration. I like the manual premixing of the saltwater though, I’d be too nervous about an automatic system that mixed the water screwing up and killing stock. RO would be nice I had the money, but until then I’ve been ok with treated tap water.@cgmarkI approached my fish store guy about using sprinkler valves, and he said it was a no-no for saltwater systems. I don’t remember the exact reason, it was over a year ago.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308873",
"author": "Dave",
"timestamp": "2011-01-19T06:28:14",
"content": "We do the following:1) Mix new salt in holding bin ahead of time2) Put a sump-pump with attached hose into tank, drain into a sink via hose3) Move pump into holding bin, point hose into tank, refill.Using a sedra 9000 I can change ~ 40 gallons of water in 10 minutes.There’s one or two drips and the heaviest thing I have to carry is the pump. It’s kind of like Bruno’s method but a bit more manual.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308948",
"author": "jeditalian",
"timestamp": "2011-01-19T08:19:24",
"content": "@jeditalian- you’re retarded",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,300.740714
|
||
https://hackaday.com/2011/01/20/rapatronic-shutter-snap-a-pic-of-an-atomic-bomb/
|
Rapatronic Shutter; Snap A Pic Of An Atomic Bomb
|
Mike Szczys
|
[
"digital cameras hacks"
] |
[
"atomic bomb",
"rapatronic",
"x-ray",
"zero time"
] |
We never really thought about it before, but
this post about Rapatronic Shutters
answers the question of how to photograph an atomic bomb detonation. The post includes an MIT video where [
Charles Wyckoff
] explains how he and [Harold Edgerton] developed the
Rapatronic Camera
. It is designed to snap a photograph based on zero time, marked by the X-ray transmission emanating from the bomb before it actually explodes. This pulse is picked up by a light sensor on a delay circuit, allowing for very precise exposure timing. Many of these cameras were used at the same time, all with slightly different delays so that the images could be viewed in order to show what happens during each stage of detonation.
[Thanks Petrus]
| 15
| 15
|
[
{
"comment_id": "310171",
"author": "theodore",
"timestamp": "2011-01-20T16:43:09",
"content": "Cool but I’m not sure how environmentally responsible it is to use nukes instead of flash bulbs",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310189",
"author": "Jack",
"timestamp": "2011-01-20T17:22:20",
"content": "The original inventors of bullet time.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310206",
"author": "Setatx",
"timestamp": "2011-01-20T17:45:08",
"content": "I love the optics progression =) Cameras do amazing things, first out-worldly in the hubble and spitzer and such, and now its time we focus our attention inward. The more we can learn, the better. Cool concept, and if we ever have an a-bomb hit our face we can watch it in slow mo !",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310208",
"author": "ss",
"timestamp": "2011-01-20T17:47:24",
"content": "“…this information could then be used to determine the efficiency of the explosion.”That’s sobering.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310244",
"author": "biozz",
"timestamp": "2011-01-20T18:19:51",
"content": "finally!i can finally do something about all these nukes i got at costco!buying in bulk is not always the best way to buy",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310258",
"author": "hubie",
"timestamp": "2011-01-20T18:41:12",
"content": "I’ve long been interested in these cameras. I’ve recently been contemplating creating my own version of one of these cameras by hacking a lens from a pair of active shutter 3d glasses but the ~$100 price range is a bit of a discouragement. : /",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310360",
"author": "beaglebreath",
"timestamp": "2011-01-20T20:47:01",
"content": "Harold Edgerton is (was)an interesting guy. he was one of the founders of EG&G Labs. During WWII he flew in recon planes over battle fields at night, using the ‘flashes’ from bomb explosions to expose his camera film. Photographed all but 4 above ground nuclear tests and worked with Jacques Cousteau.HAD is having a good day with me so far. you did a zipit entry and a Harold Edgerton entry. Now if you’ll do an entry about Feynman, Helmholtz, using the triple-point of water as a pressure standard, and finally using saturated salts to calibrate a humidity sensor, you’ll have covered all my bases.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310361",
"author": "Spork",
"timestamp": "2011-01-20T20:47:33",
"content": "So…. where are the rest of the photos?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310398",
"author": "cmholm",
"timestamp": "2011-01-20T21:37:08",
"content": "For an explanation of the mottled fireball surface, scroll to the bottom of this link:http://www.radiochemistry.org/history/nuke_tests/tumbler_snapper/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310598",
"author": "Anderson",
"timestamp": "2011-01-21T02:12:15",
"content": "“Many of these cameras were used at the same time, all with slightly different delays so that the images could be viewed in order to show what happens during each stage of detonation”The matrix – owned",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310869",
"author": "caleb",
"timestamp": "2011-01-21T08:44:39",
"content": "um, i have to say thats one of the coolest things ive ever seen/read about. makes me wish i had a CBRN suit ready to go",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311152",
"author": "Andy7",
"timestamp": "2011-01-21T16:59:24",
"content": "Um… either that’s a pretty good zoom lens or a VERY tough camera. How on earth did the camera SURVIVE??",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311575",
"author": "biozz",
"timestamp": "2011-01-22T05:24:56",
"content": "@Andy7no one said it did XDcould be an early digital or it could have used a series of mirrors to project the image downwards in to a minibunkerwho knows XD",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312020",
"author": "Discoman",
"timestamp": "2011-01-22T22:20:10",
"content": "so, where are the build steps?wait, no how-to?for shame!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "314059",
"author": "18t",
"timestamp": "2011-01-25T16:09:24",
"content": "Very impressive shot. Surprising that you don’t see it mixed in with all of the usual test photos, I’ve never seen it and it’s really unusual.From a link another commenter posted: “The glowing surface of the fireball is due to shock compression heating of the air.” this was near a similarly unusual photo. Kinda crazy when you think about what that means.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,300.595805
|
||
https://hackaday.com/2011/01/20/intermediate-concepts-building-discreet-transistor-gates/
|
Intermediate Concepts: Building Discrete Transistor Gates
|
Mike Szczys
|
[
"computer hacks",
"Misc Hacks"
] |
[
"atanua",
"binary",
"full adder",
"intermediate concepts",
"logic gates",
"transistors"
] |
[Simon Inns] has put together
a lesson in digital logic
which shows you how to build your own gates using transistors. The image above is a full-adder that he fabricated, then combined with other full adders to create a 4-bit computer.
Don’t know what a full adder is? That’s exactly what his article is for, and will teach you about binary math and how it is calculated with hardware. There’s probably at least a week’s worth of studying in that one page which has been further distilled into the five-minute video after the break. Although building this hardware yourself is a wonderful way to learn, there’s a lot of room for error. You might consider building these circuits in a simulator program like
Atanua
, where you can work with logic gate symbols, using virtual buttons and LEDs as the outputs. Once you know what you’re doing with the simulator you’ll have much more confidence to start a physical build like the one [Simon] concocted.
Finding this project a little too advanced? Check out
our Beginner Concepts articles
to help get you up to speed.
[youtube=http://www.youtube.com/watch?v=xISG4nGTQYE&w=470]
[Thanks Bluewraith]
| 21
| 21
|
[
{
"comment_id": "310068",
"author": "mike",
"timestamp": "2011-01-20T14:26:45",
"content": "Um, I think you mean *discrete. A discreet one would be smaller for starters….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310078",
"author": "Ed",
"timestamp": "2011-01-20T14:30:42",
"content": "discreet? Must try harder",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310081",
"author": "cakebrain",
"timestamp": "2011-01-20T14:34:29",
"content": "%s/discreet/discrete/g",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310095",
"author": "Doomstalk",
"timestamp": "2011-01-20T14:42:08",
"content": "My circuits always operate with the utmost discretion!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310140",
"author": "Cyberteque",
"timestamp": "2011-01-20T15:48:33",
"content": "I just love it when “dipwads” can’t think of anything better to comment!Google EDUC-8!I built one, that was after I hand wound a LOT of relays to build a 4 bit computer, THEN I “discovered” DTL (that’s diode transistor logic for the kids)A “while” later THAT fateful article in Popular Electronics came out with the Altair 8800.Getting components “down under” was a biych in those days, let alone circuit boards from US magazines, so I built one, on vero board.My point is where were are now, typing dumb ass comments across the world wide web, came from hackers, hacking, long and hard over many, many sleepless nights.So kudo’s to this guy!And screw the rest of you!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310167",
"author": "l0l",
"timestamp": "2011-01-20T16:35:58",
"content": "Just took a course on the basics of digital technology at the university, it was mainly theoretic so it’s nice seeing the gates build in real life, with transistors.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310172",
"author": "moep",
"timestamp": "2011-01-20T16:48:18",
"content": "Why no CMOS FET-Transistors?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310173",
"author": "Paul Potter",
"timestamp": "2011-01-20T16:49:39",
"content": "Just from the video, that is superb.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310251",
"author": "strider_mt2k",
"timestamp": "2011-01-20T18:25:43",
"content": "Full adder?Black Adder?http://www.youtube.com/watch?v=hOSYiT2iG08",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310275",
"author": "engineersteve",
"timestamp": "2011-01-20T19:07:27",
"content": "Usually logic gates made with this topology use FET’s. The reason you wouldn’t use BJT’s like this is that the logic levels aren’t constant for a range of inputs, this is more of an amp then a gate. Take for example a long cascade of these AND gates with the all inputs tied high. The first gate gets 5V at its input, but the next gate gets less because some voltage is lost over the collector-emitter of the BJT. Because the next gate gets less than 5V, its base current and therefore emitter current, is less, causing a lower output voltage then the previous stage. The gate output will eventually get so low as to not turn on the base-emitter of the next gate. With a real gate, the cascade can go on for ever, as long as you obey fanout limits. Wikipedia RTL or TTL for correct implementations.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310284",
"author": "Franklyn",
"timestamp": "2011-01-20T19:19:58",
"content": "@strider_mt2k mind = blown. youtube linking on HAD :O .",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310292",
"author": "MrX",
"timestamp": "2011-01-20T19:32:53",
"content": "I use this simulation programhttp://www.falstad.com/circuit/index.htmlfor most of the things.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310305",
"author": "AmX",
"timestamp": "2011-01-20T19:46:34",
"content": "The big-endian story is wrong.Endianness is about the order of the bytes (or more correctly, individually addressable units of information) within a word (which is the unit the ALU of the processor is able to work with).So in this case the computer can work with 4bits (and a carry-out), so it has a 4bit word size. Say the individually addressable unit is a single bit in this case (your finger can toggle each switch, your eyes can see each led individually) this means the ordering is big-endian, because the most significant bit (the big end, or the one you would miss most to see how big a number is) is on the smallest address (the first/leftmost led/switch).We humans are natively big-endian, in the number 1234, the 1 is the most important and is first in reading direction (this also means that Arabic readers are little-endians). Intel CPUs are natively little-endian, they put the least significant part in the memory location with the smallest address, this makes sense on computers with an 8bit bus.Think about this (and check it, I may be wrong)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310473",
"author": "alan turing's dog",
"timestamp": "2011-01-20T22:54:38",
"content": "Hate to complain, but– this is only an adder, not a computer.– A “computer” should be able to at least perform more than addition. It doesn’t need much. In order to even be called a calculator, it should be able to add and (hopefully) subtract.– the sound mixing was terrible. I’m all for a bit of background music, but if you’re doing a voice over, please limit the background music to ~70% of the level used by the narrator.Other than that, I give it an A+.PS – if you dig this, you will dig:http://www.youtube.com/watch?v=YyxGIbtMS9EThe linked video restrictions [watch it on youtube rather than inline on your website] are the future – it won’t be long before we all get charged to keep content on youtube, just as geocities and their ilk eventually had to charge people – or more likely, dump their content.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310685",
"author": "Daniel",
"timestamp": "2011-01-21T04:18:16",
"content": "A program that I really like using to simulate logic circuits is called Cedarlogic.http://sourceforge.net/projects/cedarlogic/It has quite a few different logic gates, leds, buttons, and timing simulation options.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310878",
"author": "Simon Inns",
"timestamp": "2011-01-21T09:18:34",
"content": "@Cyberteque – couldn’t agree more!@moep and engineersteve – I deliberately chose BJTs rather than FETs simply because it was cheaper to build and the idea was to demonstrate the concept. The only output which is heavily cascaded is the carry and you can clearly see in the video that the carry LED is dimmer than the others.@AmX – endianness is really only important when the values are stored, since this board has no storage the concept of ‘big-endian’ is really just the order of the output LEDs. To me it made sense to equate it to endianness in order to make the output more understandable for the reader, although I would agree that it isn’t really the ‘correct’ use of the term.@at’s dog – Yes the sound mixing sucked; however the full transcript of the video is available on the accompanying web-page.Also: correct this isn’t a stored-program computer; it’s technically just an adder – but I still feel justified in using the term computer (since the act of adding is computation)… If someone reads the web-page and understands the difference it’s a win in my books ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311312",
"author": "Ed",
"timestamp": "2011-01-21T20:38:56",
"content": "@CybertequeIt’s “kudos”. Wanker.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313994",
"author": "evs",
"timestamp": "2011-01-25T12:26:18",
"content": "why did you use a resistor on the collector/emitters? you’ve made a bunch of unity-gain amplifiers. if you exclude those resistors you’ve instead created electronic switches, which is what you need for this kind of digital circuit (the current is limited by the base resistor and the beta of the transistor). am I missing something here?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "653803",
"author": "SV3ORA",
"timestamp": "2012-05-18T21:57:43",
"content": "This is a nice little project that inspires many people. Congratulations!Nevertheless this is just some gates brought together to perform a logical function, it is not a real computer in the sense of storing programs, perform calculations and respond to different IO.I bet you could be done better than that, but to demonstrate the logic and inspire lots, this is great, so A+ by me!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "1034071",
"author": "fdsf",
"timestamp": "2013-08-01T03:25:17",
"content": "For those of us who already have extensive knowledge in binary logic, how would we actually use transistors? From watching the video, I never learned anything about how to actually get correct voltages and such…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6412163",
"author": "Mike W Schultz",
"timestamp": "2022-01-06T04:44:48",
"content": "Interesting project! Been thinking about a similar circuit, great for instruction, showing that there are real physical circuits that perform calculations! I looked at the circuit in the video. Well done, however….I think the parts count could be reduced. His XOR used 8 transistors and 13 resistors. I designed an XOR with 3 transistors and 4 resistors.The “gates” for lines 2 and 3 of the truth table require only one transistor each and one more to combine (and invert) their outputs.Fun Stuff!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,300.844732
|
||
https://hackaday.com/2011/01/19/projector-tricks-make-use-of-kinect-3d-mapping/
|
Projector Tricks Make Use Of Kinect 3D Mapping
|
Mike Szczys
|
[
"Kinect hacks",
"Multitouch Hacks"
] |
[
"hadouken",
"Kinect",
"light",
"projector"
] |
[Don’t stop the clock] is doing some work with a projector, a camera, and the Kinect. What he’s accomplished is quite impressive,
combining the three to manipulate light with your body
. The image above is a safer rendition of
the Hadouken
from the Street Fighter video games, throwing light across the room instead of fire. This comes at the end of the video after the break, but first he’ll show off the core features of the system. You can hold up your hand and wave it to turn it into a light source. In other words, the projector will shine light on your hand, moving it, and manipulating the intensity based on hand location in 3D space. Since the Kinect is sending fairly precise data back to the computer the projected image is trimmed to match your hand and arm without overflowing onto the rest of the room until you touch your hand to a surface you want illuminated or throw the light source with a flick or the wrist. It may seem trivial at first glance, but we find the alignment of the projector and the speed at which the image updates to be quite impressive.
[Thanks Vasili]
| 12
| 12
|
[
{
"comment_id": "309474",
"author": "Andrew",
"timestamp": "2011-01-19T23:09:28",
"content": "The Kinect has come full circle. Johnny Lee started with this:http://hackaday.com/2007/11/15/automatic-projector-calibration/, and then went on to (help) design the Kinect. Now that the Kinect exists, it is being used for the same thing all over again.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309506",
"author": "Skitchin",
"timestamp": "2011-01-20T00:15:53",
"content": "Very cool! Reminded me of this old gem:http://hackaday.com/2007/11/15/automatic-projector-calibration/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309510",
"author": "j_at_chaperon",
"timestamp": "2011-01-20T00:19:30",
"content": "I am always surprised by the rotated 3D rendering we see at the beginning of the video, it has a high coolness factor. I could play with this for hours.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309570",
"author": "Ultimatejim",
"timestamp": "2011-01-20T01:28:07",
"content": "Wow, Awesome! This is the basis of sensorless Mocap. I wonder how long untill us 3d animators are out of a job due to getting replaced with a machine!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309572",
"author": "w33d",
"timestamp": "2011-01-20T01:32:47",
"content": "sweet dreams!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309577",
"author": "PeachPit",
"timestamp": "2011-01-20T01:44:12",
"content": "The ‘jaw-drop’ moment for me here was when he approached the wall, and the projector dropped the light source on the wall, super impressive!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309587",
"author": "Bob",
"timestamp": "2011-01-20T01:55:53",
"content": "Mirroring his projection would be cool too. He could dance with himself.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309621",
"author": "Bajakens",
"timestamp": "2011-01-20T02:56:56",
"content": "This is an interesting idea. I’d think it’d be neat to project “skins” onto people in the scene. All his future videos could be presented by him in a projected suit and tie. Or like the singing ghost heads from a while back, he could wear some sort of mask and have a virtual head projected on it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310056",
"author": "fartface",
"timestamp": "2011-01-20T14:04:44",
"content": "“jaw drop” why? it’s simply projector alignment. I can do the same with a gyromouse or a wiimote.What is impressive is the auto calibrate and that it does not lose the right hand and accidentally start following the left hand.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310100",
"author": "naus3a",
"timestamp": "2011-01-20T14:50:18",
"content": "thing with the kinect are happening fast: during the first days, using only the partial open driver you could aready do great stuff; in a few day I could get a proper calibration and map virtual objects that interact with physical ones:http://geekjutsu.wordpress.com/2010/12/02/dar-deep-augmented-reality/now with OpenNI you get hand and skeleton traking outside the box, which is really awesome. there are 1k things i can’t wait to try…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310813",
"author": "fartbook",
"timestamp": "2011-01-21T07:12:00",
"content": "@fartface: except for at 3:31",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313150",
"author": "Arktos",
"timestamp": "2011-01-24T08:15:44",
"content": "awesome =)I could imagine some pretty epic scenarios when coupling this with another projector and some 3D glasses…",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,300.468428
|
||
https://hackaday.com/2011/01/19/make-your-own-odometer-from-scraps/
|
Make Your Own Odometer From Scraps
|
Greg R. Jacobs
|
[
"Tool Hacks"
] |
[
"calculator",
"cd",
"distance",
"garbage",
"hack",
"odometer"
] |
For those out there who would enjoy a quick and interesting weekend project, this odometer made by [PeckLauros] is for you. Featured on
Instructables
it is made from the simplest of materials including some cardboard, a calculator, wires, glue, hot glue, magnetic drive key, an old CD and a reader, and a rubber band. The magnets, when attached to the CD work in a calculation to add 0.11m to the calculator when a magnet closes the circuit. [PeckLauros] points out that since it is a homebrewed device, it does have flaws such as adding 0.11m twice when the CD is rotated too slowly. It is easily fixed by simply running faster. The video is below the break.
[youtube=http://www.youtube.com/watch?v=p3HWrBeO1cs&w=470]
| 11
| 11
|
[
{
"comment_id": "309387",
"author": "Phil",
"timestamp": "2011-01-19T20:48:33",
"content": "Thats a really bulky cool hack – want to see more like this.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309393",
"author": "Fallen",
"timestamp": "2011-01-19T20:55:28",
"content": "Featured on ….*interest plummets instantly*jk,That’s a pretty nifty combination of all those scraps into something useful.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309414",
"author": "Philip",
"timestamp": "2011-01-19T21:32:05",
"content": "Cheers Daid:http://daid.mine.nu/instructabliss/?url=http://www.instructables.com/id/Odometer/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309427",
"author": "Slipster",
"timestamp": "2011-01-19T22:04:48",
"content": "Nice hack. Now learn about ‘focus’ on your webcam.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309450",
"author": "saimhe",
"timestamp": "2011-01-19T22:39:35",
"content": "I once used a worn out pedometer for that. Cheap ones begin to skip steps after some time, however, they’re still good as a generic event counter if you provide reliable external contacts.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309469",
"author": "reklipz",
"timestamp": "2011-01-19T23:01:35",
"content": "How would one further this hack to solve the “reed bounce” problem when running slowly?One of the ideas I was toying with involves swapping the reed switch for a hall effect sensor, and feeding this to some hysteresis circuitry (an op-amp and some passives). I wonder if it’s possible to utilize a similar setup with the reed switch currently used.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309573",
"author": "Amos",
"timestamp": "2011-01-20T01:33:18",
"content": "@reklipzI would go optical. IR gap photo-sensors are easily found inside old mechanical mice, floppy drives, scanners, printers, and lots of other plentiful (read: free) electronic items. You could even hack up one of those using a pair of LEDs–one emitting and one detecting. You’d probably also need a transistor to “push the button” on the calculator.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309580",
"author": "avr_freak",
"timestamp": "2011-01-20T01:50:02",
"content": "Very old trick, I’ve seen that in a science magazine more than 22 years ago! But still a good hack.[reklipz] talks about the problems with the reed bounce when riding slowly and I remember having tried it at that time and it didn’t performed well with quick speeds too!I did use this trick with success though when I got graduate something like 10 years ago (sic!) using a big AT90S1200 with a software day-timer and one output connected on the ‘=’ key of the calculator, the other contact of the ‘=’ sign beeing the ground. By typing the numbers of days left before graduation minus one and letting the AVR grounding for a short time the ‘=’ sign once everyday I got this “graduation countdown” down working within a few hours! And with almost nothing to buy.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309612",
"author": "vtl",
"timestamp": "2011-01-20T02:45:23",
"content": "Optical sounds good, a rotary encoder would be useful for tracking rotation movement accurately (mm accuracy), its what they use in computer ball mouses",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309686",
"author": "biozz",
"timestamp": "2011-01-20T04:34:43",
"content": "i LONG time ago had did one whit a pedometer and a fishing rodsomeone commented that you can do the same thign with a calculator and i said no waymy apologies to you XD",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "5540102",
"author": "Richard",
"timestamp": "2018-11-29T14:39:34",
"content": "This would be a cool project for a physics class or something. I could totally see having done something like this back in one of my physics labs in college.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,300.790186
|
||
https://hackaday.com/2011/01/19/cracking-a-manipulation-proof-million-combination-safe/
|
Cracking A Manipulation-proof, Million Combination Safe
|
Mike Szczys
|
[
"lockpicking hacks"
] |
[
"8500",
"brute force",
"crack",
"safe",
"sargent and greenleaf"
] |
So you spent the big bucks and got that fancy safe but if these guys can
build a robot to brute-force the combination
you can bet there are thieves out there who can pull it off too. [Kyle Vogt] mentioned that we featured the first iteration of his build back in 2006 but we can’t find that article. So read through his build log linked above and then check out the video of the new version after the break. It’s cracking the combination on a Sargent and Greenleaf 8500 lock. There’s an interesting set of motions necessary to open the safe. Turn the dial four revolutions to the first number, three revolutions to the second, two revolutions to the final number, then one revolution to zero the dial. After that you need to press the dial inward to activate the lever assembly. Finally, rotate the dial to 85 to retract the bolt which unlocks the safe.
The propaganda on this lock says it stood up to 20-hours of manual manipulation. But [Kyle] thinks his hardware can get it open in a few hours. His hardware looks extremely well-engineered and we’d bet some creative math can narrow down the time it takes to brute force the combo by not going in sequence.
| 54
| 48
|
[
{
"comment_id": "309356",
"author": "cboy2us",
"timestamp": "2011-01-19T19:53:43",
"content": "Did anyone else see the safe not open?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "3344288",
"author": "Diane J Fritsche",
"timestamp": "2016-12-31T15:34:39",
"content": "If the safe had money, would the nitrogen put a coating on the money so it could not be used?",
"parent_id": "309356",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "309362",
"author": "charper",
"timestamp": "2011-01-19T20:00:50",
"content": "To me, this is the most interesting part of the article:”Combination space optimization is the key. By exploiting of the mechanical tolerances of the lock and certain combination “forbidden zones”, we reduced the number of possible combinations by about an order of magnitude.”They even provide a reference (that I did not read) explaining the method.Very cool!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309366",
"author": "Jake",
"timestamp": "2011-01-19T20:06:29",
"content": "I’m not sure, it was turning too slow to tell. This doesn’t seem like an effective method, maybe if it was going 10x faster! :P",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "816500",
"author": "Anonymous",
"timestamp": "2012-10-13T04:35:00",
"content": "Ramp the speed up too high and the tumblers will spin farther than you intended to stop.",
"parent_id": "309366",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "309367",
"author": "Franklyn",
"timestamp": "2011-01-19T20:06:46",
"content": "@cboy2us: Did anyone else read the part of the article where it states that the torque required to open the door is beyond the capabilities of the stepper motor and that it detects this state instead of actually opening the door ?.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309376",
"author": "Gregory Strike",
"timestamp": "2011-01-19T20:13:48",
"content": "I believe the mechanical tolerances is what also makes the cracking of a Master Lock quite a bit easier. It greatly lowers the possible combinations.Check out Mark Edward Campos’ site, and click on the Master Lock graphic.http://markedwardcampos.comMakes me want to play around with my Arudino and a Master Lock! :) But then again there’s a new shiny object on this site every day!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309378",
"author": "andrew",
"timestamp": "2011-01-19T20:23:38",
"content": "That thing is very cool!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309389",
"author": "Chalkbot",
"timestamp": "2011-01-19T20:52:04",
"content": "It seems like it would be fairly easy to gear the stepper to crank out the combinations way faster than what we see in the video. Why is it going so slow?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309390",
"author": "frozenlazer",
"timestamp": "2011-01-19T20:52:41",
"content": "Seems like an easy way to defeat (or rather drastically slow down) this type of brute force attack would be to include some sort of centrifugal clutch into the mechanism that prevented you from turning the knob too quickly.Humans tend to not need into a safe that often, so if this required a person to go slowly and take 2 to 3x the time a fast human could actually open the safe it probably wouldn’t be that inconvenient.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309399",
"author": "Ivan",
"timestamp": "2011-01-19T21:04:40",
"content": "I don’t know how this safe works, but in regular safes, the speed would be always limited by the fact that you are “pushing” the discs with the dial, a sudden movement would make the discs to spin freely beyond the point in which you stopped the dial.Anyway, regular stepper motors are slow, a gear or belt system could be used to improve speed, or if going really serious, an industrial servo motor instead of the stepper. A servo with a proper controller could drive the safe as fast as it can be turned without destroying the mechanism.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309406",
"author": "CPX",
"timestamp": "2011-01-19T21:14:31",
"content": "“we’d bet some creative math can narrow down the time it takes to brute force the combo by not going in sequence.”Pardon the confusion, but this doesn’t really seem right. Brute forcing a combination implicitly assumes that the solution is some random point in the set of possibilities.Say for instance I’m trying to guess a three digit number. I guess 001, and that’s wrong. There’s still 10^3-1=999 possibilities left, the solution is still assumed to be distributed randomly among them, so I have a 1/999 chance of guessing correctly whether my next guess is 002 or 999.Now, if the summary means that a “mechanical tolerance” attack could be employed – that is, you could increment the guess by some arbitrary amount instead of 1 each time (like guessing 001, 003, 005…), that would make sense.Or is there some magical property of safes that makes an “out-of-sequence” guess more probable than an “in-sequence” one?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "439851",
"author": "Nick Brown",
"timestamp": "2011-08-22T23:24:14",
"content": "The way you could speed it up would be to start with combinations that are closer numbers on the dial to reduce dial spin time. For instance, one combo ends on a number near the next combo’s starting number to reduce unnecissary travel.",
"parent_id": "309406",
"depth": 2,
"replies": [
{
"comment_id": "1699599",
"author": "Scott",
"timestamp": "2014-08-09T01:26:28",
"content": "Except that you must rotate it to 85 after every combination to slide the bolt free. so, no matter what, you’ll always end up on 85. I suppose you could start with the combinations that use 85/86 as the first number, But that doesn’t seem to help too much…",
"parent_id": "439851",
"depth": 3,
"replies": []
}
]
}
]
},
{
"comment_id": "309409",
"author": "Gdogg",
"timestamp": "2011-01-19T21:24:10",
"content": "@CPX I think Szczys mixed up:”Combination space optimization is the key. By exploiting of the mechanical tolerances of the lock and certain combination “forbidden zones”, we reduced the number of possible combinations by about an order of magnitude.”With not going in sequence. There’s no real benefit to doing the combos none sequentially.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309410",
"author": "Jason",
"timestamp": "2011-01-19T21:27:00",
"content": "Out of sequence may lower the travel distance from the current state, thus improving the total time to span the space.For example, if you have to rotate 360deg to reset the lock, if you are currently at 90deg, it is faster to check a combination starting at 100deg than it is to check one at 80deg:rotation to starting position:100deg => 90 + 360 + 10 = 460deg vs80deg => 90 + 360 + 350 = 800deg.That can make a huge difference when you’re checking 1m combinations.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309411",
"author": "Aleksejs",
"timestamp": "2011-01-19T21:27:51",
"content": "BTW the safe looks like this one:http://blackbag.nl/?p=207",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309415",
"author": "Just paul",
"timestamp": "2011-01-19T21:36:55",
"content": "LOL! Reminds me of the movie “Deadly Friend”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309423",
"author": "TReid",
"timestamp": "2011-01-19T21:51:20",
"content": "where is the Buy It Now button?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309430",
"author": "mmmatt",
"timestamp": "2011-01-19T22:11:12",
"content": "“I’m sorry to report that there were no gold coins, ancient relics, or mummified body parts inside the safe.”SO what WAS in it then! Don’t leave us hanging!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309446",
"author": "vonskippy",
"timestamp": "2011-01-19T22:29:05",
"content": "Of course you can always just drop it on one of it’s corners from 10-12 feet up and open it quick and easy (well easy except for lifting it 10-12 feet high).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309447",
"author": "G2",
"timestamp": "2011-01-19T22:32:42",
"content": "Pretty sure this wont work regardless of whether the robot is capable of moving the mechanism fast enough or having enough strength to open the door mechanism. These sorts of locks are designed to wear out under a brute force attack. The lock itself will fail permanently before they get the combo – of course they may just luck it in the first couple of thousand, but probably not.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309468",
"author": "Chris",
"timestamp": "2011-01-19T22:59:47",
"content": "I belive commercial autodialers are available. A locksmith I talked to said they can put one on a 4-3-2-1 combination and have it open in a couple of days. Way less if you know one of the numbers.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309485",
"author": "Chalkbot",
"timestamp": "2011-01-19T23:31:16",
"content": "@G2Man, I hope that isn’t true. If the people who sold me my super expensive safe included the feature of the dial breaking after a certain number of spins to *reduce* the chances of a brute force attack being successful, when they could have simply included a feature like the one frozenlazer described above, I would be pissed.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309489",
"author": "Marco",
"timestamp": "2011-01-19T23:43:34",
"content": "<>Me too. I still have nightmares from that movie.More importantly: WHAT WAS IN THE SAFE?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309529",
"author": "G2",
"timestamp": "2011-01-20T00:51:55",
"content": "@Chalkbot – yeah tell me about it. I am not an expert by any means, but I’ve worked with guys responsible for maintaining TS safes – and those ones are definately designed to wear out.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309538",
"author": "Frollard",
"timestamp": "2011-01-20T01:04:12",
"content": "As with most combinations, this one is exploting a feature where you set the first 3 disks to the first 3 numbers, then try all the 4th numbers in sequence.Same with a master lock. Try the first 2 numbers, then on the third, start immediately after the 2nd number, pull, rotate slightly, pull, rotate, pull, etc 13 times, then move the 2nd number over one counterclockwise, and attempt all the third number clockwise again. You can reduce the attempts greatly by not retrying the first numbers nearly as often.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309549",
"author": "Frollard",
"timestamp": "2011-01-20T01:06:51",
"content": "**double post yay!And to defeat this type of attack, simply have a ‘mechanical diode clutch’ like was featured a few months back that takes all rotation of the knob and turns it into forward rotation. Use that to increment a mechanical lockout latch on a timer that slowly retracts. As you attempt, it extends the lockout timer to block the ‘thingy’ from entering the channels in the tumblers. After too many tries it locks out for a day. Tada, broot foars proof.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309608",
"author": "jim",
"timestamp": "2011-01-20T02:41:02",
"content": "The linked paper is amusing — turns out the black art of safecracking is easy, but bringing enough bullets to lay down suppressing fire to make it to the Ferrari is a pain.I’ll be seeing you guys in Rio de Janeiro.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309651",
"author": "medwardl",
"timestamp": "2011-01-20T03:47:05",
"content": "I’m curious if the 20 hours is a professional safe cracker or a random person. I’ve seen safes that aren’t supposed to be able to be cracked in hours and I’ve seen a professional do it in 5 minutes forget who it was he did it all by touch the borascope method on the same safe about 30 minutes so I’m curios if the person that tested this safe was a professional or not.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309680",
"author": "Davo1111",
"timestamp": "2011-01-20T04:20:40",
"content": "@CPXhttp://tech.nocr.at/wp-content/uploads/2009/10/masterbreak.jpgIf you knew some patterns about the specific model, you could easily narrow down the safe crack.For example if the second number is always higher than the first.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309692",
"author": "chico",
"timestamp": "2011-01-20T04:43:00",
"content": "Looks like (in hardware) my program to solve sudoku. You pay attention to the rules, fix whatever is possible, and use brute force for the remaining more constrained possibilities. Well, it works at most in a fraction of a second for any valid puzzle.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309701",
"author": "jimmyjones",
"timestamp": "2011-01-20T05:01:10",
"content": "@FrollardYou cannot test the third number as you have described. After entering the third number you return the dial to zero and push/turn.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309771",
"author": "Jim",
"timestamp": "2011-01-20T06:59:34",
"content": "Cool, build. Current generation of electronic locks like the X-09 defeat this by locking out if you:Spin too fastSpin over ~270 w/o stopping (max rotation of the wrist)get the combo wrong more than 3 times.On top of that, these locks place you randomly on the dial w/ every change in direction.There is a good write up of these locks from Defcon 2006.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309809",
"author": "amk",
"timestamp": "2011-01-20T08:07:11",
"content": "I have a small safe that uses a 10 digit keypad. It supports up to 12 digits for a pass-phrase. It also enforces a .5 second delay between key presses. So 12^10 possible combination entered at half second intervals would take just under 1,000 years to brute force this safe. Also, a sledge hammer could do it in about 15 seconds.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309820",
"author": "voxadam",
"timestamp": "2011-01-20T08:33:37",
"content": "Of course there is an method for opening safes that is much faster than this:http://xkcd.com/538/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309822",
"author": "salec",
"timestamp": "2011-01-20T08:43:37",
"content": "“Of course you can always just drop it on one of it’s corners from 10-12 feet up and open it quick and easy (well easy except for lifting it 10-12 feet high).”You mean: “Of course you can always apply G-force equivalent to dropping it from 10-12 feet to one of its corners …”“When in doubt, always ‘see fore’ :D!”(Jamie Hyneman)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309831",
"author": "DarwinSurvivor",
"timestamp": "2011-01-20T08:57:23",
"content": "A “good” safe will NOT open when dropped from 10-12 feet. Good fire-proof safes are actually tested by burning them at super-high temperatures for an extended period (couple hours), then literally dropped from a height of about 10 feet. If the safe opens, or the contents (specific type of paper) is damaged, the safe FAILS the test.I doubt your common “motel safe” is tested to those standards though…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309880",
"author": "elektrophreak",
"timestamp": "2011-01-20T09:08:20",
"content": "i love the mechanics in this",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309907",
"author": "Malikaii",
"timestamp": "2011-01-20T09:47:47",
"content": "@CPXWouldn’t it be safe to assume that if you had to select a 3 digit combination, you would be required to select 3 DIFFERENT numbers? That removes some of the possibilities. Then you combine that with your research into patterns of combination requirements for the specific model, mechanical specifications, and forbidden zones and you could eliminate quite a lot of numbers.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "481555",
"author": "9072997",
"timestamp": "2011-10-17T00:10:19",
"content": "one of my combination locks has the same 1st and 3rd numbers, i dont see why a high end lock would enforce this restriction",
"parent_id": "309907",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "309949",
"author": "ragman",
"timestamp": "2011-01-20T10:43:15",
"content": "An ex Forign Affairs agent once told me of such brute force safe cracker being powered by a power drill and the necissary mechanics. It was being used on the recovered safe of a decessed diplomat and took two weeks to get it open.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310294",
"author": "j s",
"timestamp": "2011-01-20T19:35:11",
"content": "The Mas-Hamilton SoftDrill was designed to solve the problem of opening this kind of lock quickly. It uses a very sensitive accelerometer to detect the position of the gates. It can open any dial-type mechanical safe lock in 45 minutes.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310482",
"author": "Hitek146",
"timestamp": "2011-01-20T23:15:44",
"content": "From 2009:http://hackaday.com/2009/07/21/gentle-safe-cracker/From 2006:http://hackaday.com/2006/08/06/safe-autodialer/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310517",
"author": "asheets",
"timestamp": "2011-01-21T00:06:11",
"content": "I wonder if spraying the weakest point(s) of the unit with liquid oxygen, then hitting the thing with a sledge hammer, would be easier…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310591",
"author": "BenHenson",
"timestamp": "2011-01-21T02:01:45",
"content": "HAH, let’s see him try that on a Kaba Mas.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310730",
"author": "mic",
"timestamp": "2011-01-21T05:02:49",
"content": "@asheets it may work but you my explode. Use liquid nitrogen =( Oxygen oxidizes and accidental self immolation is bad mmkay.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310881",
"author": "strider_mt2k",
"timestamp": "2011-01-21T09:29:56",
"content": "Wurd.Use the Nitrogen yo.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311309",
"author": "nevada trust",
"timestamp": "2011-01-21T20:36:19",
"content": "the crew from ocean’s 12 should have a look at this video.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311765",
"author": "John Smith",
"timestamp": "2011-01-22T11:40:53",
"content": "I have a feeling that the 2006 article is based on the paper “Safe Cracking for the Computer Scientist”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "312976",
"author": "Sam",
"timestamp": "2011-01-24T03:44:44",
"content": "Just to correct a poster here, the stepper motor is too weak to open the safe. That’s why there are two motors!The stepper motor spins the dial, then a second, stronger but less accurate, servo motor turns the butterfly dial (the bit that acts like a door-handle!). The butterfly dial provides the torque to open the door (usually by hand) and needs strength to turn, but will only move at all if it’s mechanism isn’t blocked. Which it usually is, by a link to the dial mech, only opening when the right combination’s in.Just a small point but important to understanding the concept.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "333949",
"author": "ehybrid",
"timestamp": "2011-02-15T18:01:30",
"content": "…why bother cracking it… just hand the safe to the “will it blend” guy…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "389947",
"author": "Bud",
"timestamp": "2011-05-04T13:21:51",
"content": "How do you build it? Where are the plans? I would really like to build one. I have several safes that I have bought at auctions and would like to have them opened without spending a great deal of money for each safe.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "479597",
"author": "Sar",
"timestamp": "2011-10-14T01:23:32",
"content": "Why not have someone cut it with an EDM?",
"parent_id": "389947",
"depth": 2,
"replies": []
}
]
}
] | 1,760,377,300.677867
|
||
https://hackaday.com/2011/01/19/arduino-the-documentary/
|
Arduino The Documentary
|
Mike Szczys
|
[
"Misc Hacks"
] |
[
"arduino",
"documentary"
] |
We finally got around to watching
“Arduino The Documentary”
and it’s a two-thumbs-up kind of film. What did we like? It’s a documentary about open source hardware so what’s
not
to like? You’ll hear the story of how
the Arduino team
was formed and the path they took from design to production. There are also interviews with early adopters and we even find out that
Sparkfun
passed on their chance to sell the original through-hole kit version of the board. It’s well made, and thanks to the Creative Commons license you can download it for free, or watch the embedded version here after the break. It’s only 28 action-packed minutes so
finish up that special clock
and watch it during lunch today.
[vimeo=http://vimeo.com/18539129 w=470]
| 38
| 38
|
[
{
"comment_id": "309283",
"author": "CutThroughStuffGuy",
"timestamp": "2011-01-19T18:06:46",
"content": "I watched this a few days ago. I love arduinos. We use them in industrial control equipment as a replacement for ladder logic PLCs.However this video, while nice in that it gave an overview of the arduino’s upbringing – gave a lay audience absolutely NOTHING useful.It doesn’t show off what the arduino can really do – how easy it is to use – how accessible it really is, etc.If you want to get people interested in using arduinos (and we should) then you need to show them how easy and inexpensively and accessible this makes electronics.Knowing the history of it and where it came from is nice but really not relevant to a new user who honestly, doesn’t really care. They care about what it can do for them. Period.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309287",
"author": "Squirrel",
"timestamp": "2011-01-19T18:17:29",
"content": "The land of HaD’s comments will soon be filled with scorch marks from the flaming which is about to unfold",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309292",
"author": "osgeld",
"timestamp": "2011-01-19T18:22:32",
"content": "well now I know to not come back to hack a day for the rest of the day, I dont feel like getting banned this week",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309295",
"author": "Time",
"timestamp": "2011-01-19T18:23:21",
"content": "Arduino fanboy pornography.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309300",
"author": "alan",
"timestamp": "2011-01-19T18:36:33",
"content": "@CutThroughStuffGuyWho said the documentary was for new people wanting to know what the arduino is? The purpose seemed to be more for the people that already use the arduino and would like to know how it got to what it is today.Just saying.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309308",
"author": "mark",
"timestamp": "2011-01-19T18:43:04",
"content": "@alanI think the subtext of @CutThroughStuffGuy’s comment is that a documentary that introduced the Arduino to the uninitiated would have been far more valuable.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309313",
"author": "alan",
"timestamp": "2011-01-19T18:52:51",
"content": "@markif that’s what his comment meant – then i disagree. You could do a simple google search for arduino – find the homepage and learn FAR more about the arduino than watching a 28 min documentary on “what the arduino is.”Documentarys don’t have to be useful – they are for telling a story about something.How could is this documentary less valuable than introducing someone to the arduino? People take things for granted and i love how people can see what effort went into it, and what sacrifice the arduino took to get this hardware/software out into the public as open source.makes me appreciate it a little more…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309324",
"author": "NatureTM",
"timestamp": "2011-01-19T19:02:16",
"content": "I’ll just come out and say it. I love Arduino. It got me re-interested in electronics and programming. If it wasn’t for Arduino, I don’t think I’d be going back to school for CE. I’d probably still be working at a transfer agent, getting yelled at by stock brokers and causing $20,000 losses because I fat-keyed a number.Arduino really might have changed my life! Maybe another uC could have also done the trick, but nothing else seemed as exciting or noob-friendly. I can’t say I use Arduino very often anymore. Still, I can’t imagine a better beginner tool with a better community.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309342",
"author": "mavis",
"timestamp": "2011-01-19T19:38:53",
"content": "It was interesting to find out, in some small sense, how the arduino came to be. That said, it didn’t get me any more interested in the thing itself. I’m just beginning and for now (due to cost), I’ll stick with my msp430s.Also, I don’t get the point of a <30 min documentary that doesn't really have much to say. I feel like i just wasted my lunch break.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309349",
"author": "CutThroughStuffGuy",
"timestamp": "2011-01-19T19:43:48",
"content": "Don’t get me wrong. I ABSOLUTELY love the Arduino. They have made our lives markedly improved and saved us a ton of headache, money and hassle. I have personally bought dozens of 2056 Megas and Unos. They power very large, five figure machines that we design and build in house.“I think the subtext of @CutThroughStuffGuy’s comment is that a documentary that introduced the Arduino to the uninitiated would have been far more valuable.”That is more or less what I was trying to say. While knowing the backstory is fantastic and I applaud the efforts of the filmmakers, if Arduino is going to spread as well and as quickly as I and many others hope it will, then it needs to be “sold” on what it can do – the features and benefits and ease of use (which can still use a bit of work although once you know it – you can get into it very quickly but there is still a significant “new user hurdle” factor still at play when it comes to basic usage instructions).That, to me, would be more useful to learning about the Arduino than this documentary was. I watched it and was like.. ok that’s kind of neat but I already know the backstory and I am already sold on the idea of using Arduinos. But to a novice outside of electronics – they would watch that and most likely be like ok well what can it *DO* exactly? Why should I consider using this? What can it do *FOR ME*? The documentary, in my opinion, didn’t really speak to that at all. Which may have been the point and if so then somebody should make an adverdocumentary on the Arduino that is targeted at new users such that after watching it they go “HOLY CRAP!!” microelectronics can actually DO this stuff? And it only costs $30 – $50 to get started? I want to try this!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309364",
"author": "ZeUs",
"timestamp": "2011-01-19T20:01:06",
"content": "It’s actually a documentary on open source stuff taking the arduino as a prime example.I liked it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309374",
"author": "mi6x3m",
"timestamp": "2011-01-19T20:10:35",
"content": "Arudino this, Arduino that, Arduino here, Arduino there every day. I go to the el. store and the following conversation takes place:– “Do you want the new UNO?”– “The new what?”– “UNO?”– “What is this?!”– “Arduino UNO…”– “Eh … no, I want an ATtiny45.”Why is it everywhere?? It’s pop-electronics galore. LED flashing and button pressing to the extreme. Even for someone with primitive knowledge will be able to solder an AVR prototyping board on a perfboard in no time and will make the STK200 for it it will have exactly the same function. But people somehow order the Arduino instead… I do recognize the potential of it, but this is getting bigger than really needed.“It’s not the hardware, it’s the software behind it, it’s open source and it’s great, let’s develop together!!!” you’ll say. I don’t really follow here… How easier can AVR development get than it was before the Arduino? I began my journey in the electronics world with microcontrollers and programming AVRs was pretty easy having a decent C compiler. How’s fitting virtual tables on 1KB of RAM going to change the situation, tell me?I personally like the device, although I’ve never used it. There are some cool projects with it, althought it’s mostly over engineering. There, I said it, kill me.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309375",
"author": "fartface",
"timestamp": "2011-01-19T20:12:24",
"content": "Arduino…. the gateway for a N00b to the land of PIC programming…When you outgrow the duinos and start programming pics directly, you suddenly can do more.. I love the 8 pin pics, really cool little devices to make sinister thing’s with…. Like the clock that changes speeds… a 8 pin pic can do that for 1/90th the price of the duino based one AND you can make it hidden in the clock assembly instead of having that big expensive Brick hanging off it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309381",
"author": "lamer",
"timestamp": "2011-01-19T20:32:11",
"content": "arduinos are truely dangerous..they are the essence of a gateway drug.too easy to access and use.and everybody has to try it.and it very often lead to much muchstronger and powerful drugs..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309394",
"author": "fotoflojoe",
"timestamp": "2011-01-19T20:58:10",
"content": "@lamer:8-D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309405",
"author": "osgeld",
"timestamp": "2011-01-19T21:13:37",
"content": "fartface, why would it open the world to pic’s since it uses avr chips which are pretty darn different? and honestly a brick hanging off of it? I shoved an arduino compatible setup inside of an nes controller with its original pcbits like saying “oh someone tried something cute but there is a big expensive pic kit hanging off of the side, I hate microchip!” it doesnt make any senseI am so glad you can program a pic chip in asm, so what I can do it with an avr (to a point) but for 99% of the things I want to try there is just no need to when I can do it in C, or just maybe I dont want to sit down with a 400 page datasheet to set a pin as an input on something like an attiny85 which I just got last night in the mail and wanted to make sure it was working",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309461",
"author": "tpbbob",
"timestamp": "2011-01-19T22:54:05",
"content": "@osgeld, so much for “well now I know to not come back to hack a day for the rest of the day, I dont feel like getting banned this week”:]",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309471",
"author": "rodrigo calvo",
"timestamp": "2011-01-19T23:03:35",
"content": "I will put some light since this news is not complet. The oficial homepage of the Arduino The Documentary is : arduinothedocumentary.org and since I am who had the idea of shootin it. We wanted people to put face to arduino team. Know a bit how it evolved by the people involved telling it.No other hidding agenda.Please add the homepage so people can download the dvd when it gets relased and both versions in spanish and english in HD and now just the vimeo versions.Rodrigo Calvo",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309488",
"author": "osgeld",
"timestamp": "2011-01-19T23:38:37",
"content": "yea …",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309526",
"author": "Daid",
"timestamp": "2011-01-20T00:41:50",
"content": "@Arduino haters: The arduino a nice piece of tech for people to learn a bit and build something quick.@Arduino lovers: The arduino is like a bicycle with training wheels. Don’t forget to take off those training wheels at some point.Some guy I work with tried to use the arduino in some prototype we build. And while the AVR chips are more then fast enough for what we where building he couldn’t get it to work. I took a quick look at his code and I knew why. The arduino library is bloated. VERY bloated. I rewrote the whole thing in plain C accessing registers directly, and the code ran 4x as fast. Used 3x less flash and a bit less ram.Still, we kept using the arduino hardware, it’s simple and good enough for our goal. Still the software library is awful for any ‘real’ work, and the excuse for an IDE is like the worst thing we had seen so far. (And we use VB6 at work, so that says something)The arduino software allowed us to start, but it doesn’t provide any ‘upgrade’ or ‘advance’ path. While I have no fear of datasheets and schematics, it proved to be just a bit to difficult for my colleague.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309553",
"author": "therian",
"timestamp": "2011-01-20T01:09:13",
"content": "Trike the DocumentaryDocumentary about riding trikes, pretending looking proud and justify why you keep extra wheels at you age",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309576",
"author": "lee",
"timestamp": "2011-01-20T01:38:35",
"content": "Being a person who’s been wanting to get into electronics and programming, I see the arduino as a “gateway” drug. I haven’t tried using it yet, but because of the versatility and ease of use it tickles my fancy. I have no idea how to program pics, etc. Hell, half the stuff I read on HaD is confusing to me, but I’m still interested in reading about everything, and I do.Why is starting off using an arduino so BAD? People on here have told me to go and buy a pic programmer and just mess around with it, but how is that any different from using an arduino? I’m still learning? Eventually I’ll learn the intricacies of different microchips to suit my needs in terms of ram/power mumbojumbo, but for now isn’t the goal to get me into the scene in the first place?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309581",
"author": "therian",
"timestamp": "2011-01-20T01:51:19",
"content": "@lee because it simply unnecessary and adds extra cost (it like overpriced overenginering 500lb exercise machine for doing simple crunch), you will be much better off with a programmer or even better debugger and a book than slow arduino libraries and tiny bits of information on crappy forums",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309589",
"author": "Rob",
"timestamp": "2011-01-20T01:56:58",
"content": "This debate is just as pathetic as the debate over which is a better OS between windows, mac, and linux. The best OS for your computer is the one that does what you need it to do the most efficiently.It’s the same argument, I personally like Arduino, I’ve been able to use it to do anything I’ve applied it to, and based on my programming skill level, it does exactly what I need economically.Currently I’m using an Arduino to replace a system that has always been controlled using relay logic. I also have to be able to explain to the 60 year old guy that’s always been maintaining this system how it works now, since this guy has never used a computer in his life, how would it have been better or easier if I used a PIC or anything else with a lower-level language than Wiring?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309602",
"author": "ajoakim",
"timestamp": "2011-01-20T02:29:39",
"content": "I am a Computer Scientist, and I love the Arduino. I Guess it was developed for people whom are not that advanced with hardware. And coding for this little puppy is a breeze, its really simplified. I recently got the mega for my dad, he is a electronics engineer (graduated back in the 70s) so he can tech himself some of this new modern electronics, its an ongoing process.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309673",
"author": "Haku",
"timestamp": "2011-01-20T04:12:04",
"content": "Arduinos have become the Lego of microcontrollers – every bugger thinks they built a masterpiece just by sticking two bricks together (or shields in the case of the Arduino)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309776",
"author": "ratso",
"timestamp": "2011-01-20T07:09:49",
"content": "For what it is Arduinos are cool: “a way to teach artists how to program microcontrollers”Pretending it’s anything else is ignorant ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309808",
"author": "Sodor",
"timestamp": "2011-01-20T08:06:13",
"content": "Arduino is for breaking the ice on microcontroller programing, then when the fear of using these little things is gone one can use other ATMEL chips and build his own PCB’s for specific applications or trying to use other type of microcontrollers or maybe PSoC or DSP.PIC is the worst choice to beginning with microcontroller programming: humongous datasheets, erratas, if you change to another PIC model you will need read another humongous datasheet, etc. but this will make a man out of you and you’ll be awarded by a lot of learning and experience.Personally I use PIC, and I begin learning microcontroller programming with 16F series, then I migrated to 18F, 30F and finally 32F, a lot of datasheet reading, I admit that it was difficult but now I want to say that I dont change my PIC for one arduino board :) (maybe two boards make the deal, nah its a joke)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309922",
"author": "therian",
"timestamp": "2011-01-20T09:58:16",
"content": "@SodorI had more enjoyable time learning PICs, perhaps I was lucky getting right book and tool(ICD).“humongous datasheets, erratas, if you change to another PIC model you will need read another humongous datasheet, etc. ”This just not true. You do need to look in data-sheet for specific hardware on yours PIC model but all other information is general to whole family.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309923",
"author": "Malikaii",
"timestamp": "2011-01-20T09:58:36",
"content": "@CutThroughStuffGuyThis is a documentary, not a commercial. War documentaries are not designed to get you interested in starting wars, so why is this different?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309958",
"author": "Ixthys",
"timestamp": "2011-01-20T11:10:02",
"content": "Is there any advantage in using an Arduino instead of an AVR/PIC if you’ve already learned to use an AVR?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310099",
"author": "Kent",
"timestamp": "2011-01-20T14:49:08",
"content": "@CutThroughStuffGuyThat’s pretty awesome that you guys are using the arduino for industrial control. I’m currently studying ladder logic and PLCs. As I program PLCs in ladder logic, I often find myself longing for my old friend C. However, I find that using basic logic formations / instructions is forcing me to think about programming, and even the simple circuits that I may design day-to-day, in a different way. I feel that knowledge of basic logic is something that anyone interested in electronics, no matter what their goal, should have. I can’t tell you how many times I have used logic to accomplish something that I would have thrown a uC at in my early days!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310227",
"author": "CutThroughStuffGuy",
"timestamp": "2011-01-20T18:05:42",
"content": "“This is a documentary, not a commercial. War documentaries are not designed to get you interested in starting wars, so why is this different?”Because wars are not tangible, fungible entities that can be bought and sold and they certainly shouldn’t be encouraged.A good documentary should make you think, should inform you and should make you go – “I never thought about that or I never knew about that”. It should provide a call to action without being biased or skewing the facts. This documentary, while a superb documentary on the history of the arduino, for me, did not make me go holy crap I need to go buy one of these right now because look at what I can do with it. I am already part of the proverbial choir here but even if I wasn’t – the documentary was heavy on the history and light on the details and ways of using arduinos and how easy they are to use.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310236",
"author": "CutThroughStuffGuy",
"timestamp": "2011-01-20T18:15:16",
"content": "“That’s pretty awesome that you guys are using the arduino for industrial control.”Lots of times we buy used industrial equipment and the vendor simply will not provide ladder logic or compiled binaries for their PLC controls. So invariably when the PLC fails or is missing or the company is no longer in business or doesn’t support that model or even in some cases wants five figure license fees to use their hardware (even though the previous owner paid through the nose for the machine when it was new) – we turn to the Arduino and break down the functions necessity – the fail states, the normal functioning states, etc – throw in relay blocks and resistors if needed to get us to 24VDC or 120VAC or three phase 208 or 460 or whatever and run with it. The Arduino is fantastic at monitoring states, responding appropriately to inputs and outputs, is low cost, robust, easy to program, fast enough for our needs (although we tend to use Megas for the input/outputs without needing to mux), quick to start up from power on, able to monitor failure states with monitoring routines, has fast polling of inputs, and costs $50 or so. They are readily available and able to be integrated into commercial products.Not many people out there are controlling 480 volt 3 phase power using Arduinos and solid state relays but it speaks to the power of the platform and the flexibility that the Arduino brings to the table. I truly wish something like this was out there 10 years ago or so when I was trying to learn electronics. I never got past 555 timers. But with this, we can pick it up and make it reliably control industrial equipment just as well (if not better – the polling rate for things like rotary encoders is fantastic) than the original PLC in the unit. It’s not an approach for everybody (you have to be very deliberate with how you program and test it) but the results speak for themselves. Did I mention you can network them all together and enable extra outputs to “graft on” monitoring as well? Simply a superb little piece of hardware.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310602",
"author": "ratso",
"timestamp": "2011-01-21T02:16:17",
"content": "Gushing fanboi writes:“I never got past 555 timers.”indeed….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "313141",
"author": "LordNothing",
"timestamp": "2011-01-24T08:09:44",
"content": "ive been using arduino for a little more than a year and have greatly improved my electronics skills. these days i either completely ditch the board and use the chip in a board of my own design, though lately ive been using a nano with diy shields made from cheap radio shack proto boards. in many cases i kinda think that the hardware is overkill for the application.im somewhat interested in moving on to attinys at this point. lots of things i do just dont really require all the power and memory of an atmega328. also i kinda want to move on to lower level code. only thing really keeping me from taking the leap is a lack of cash flow at the moment.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "430218",
"author": "Rodrigo Calvo",
"timestamp": "2011-08-08T00:02:19",
"content": "Hi, seem that you didn´t like the documentary, the way we shot it, is so you put a face to the people behind arduino, being the first opensource hardware board, you can try to find something fully opensource before, we hoped and 99% of people liked it.It a proyect that took a lot of effort to shot and cut. Its no two week kind of thing.Rodrigo Calvoarduinothedocumentary.org",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "461628",
"author": "N0LKK",
"timestamp": "2011-09-22T07:31:26",
"content": "The video documents history folks. Yea I know some hackers can’t be bothered with history. I can’t care less if that fault has them waste more time,and money than necessary. But it’s sad when their bullheadedness cause others to do the same.I find it interesting that the Arduino may have become what help in the decision to create it in the first place",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,300.541448
|
||
https://hackaday.com/2011/01/19/gas-turbine-jetpack-test-pilots-wanted/
|
Gas Turbine Jetpack – Test Pilots Wanted
|
Mike Szczys
|
[
"Transportation Hacks"
] |
[
"jetpack",
"megaman",
"turbine"
] |
Feeling brave and
ready to strap on this jet pack
? Well, that’s not all of it. What you see above is just the manifold with two nozzles that can be aimed for control. The gas turbine engine that is being designed for the project will attach to the large circular coupling on top. The finished suit, called a Monocopter, should weigh in at about 265 pounds. That kind of weight makes us think they should include
a robotic exoskeleton
to help support it during takeoff, landing, and just when standing around. This thing already looks like it belongs to a villain from the Megaman series. Here’s hoping it’s used for good and not to help produce an army of
mean robots
.
[Thanks Rob]
| 42
| 42
|
[
{
"comment_id": "309147",
"author": "patman2700",
"timestamp": "2011-01-19T14:04:47",
"content": "Look closely; there are actually three nozzles stemming from the manifold.#corrections",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309149",
"author": "Steve",
"timestamp": "2011-01-19T14:06:31",
"content": "This looks HIGHLY dangerous. I should think that just the shear weight alone, lets not even include the noise this thing would make, is going to kill someone. If you are going to test this at all i suggest a volunteer of a convict, someone who is already slated for the death sentence.A complete waste of time and money in my opinion.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309153",
"author": "The Cageybee",
"timestamp": "2011-01-19T14:12:16",
"content": "I’ve been feeling a little suicidal recently.Where do I sign up to be a crash test dummy?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309155",
"author": "Techrat",
"timestamp": "2011-01-19T14:14:07",
"content": "Yeah, that’s really where you want to place yourself: Between two incredibly hot exhaust tubes. Unless the pilot has an asbestos suit as well, it’s gonna be fly and fry. And the fly part is still a maybe.I see there’s a third tube in the rear which is good, otherwise the CG would be way off. Looks to me like the pilot’s feet are going to get too much blast.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309159",
"author": "patman2700",
"timestamp": "2011-01-19T14:23:01",
"content": "Whoops, wrong again!There are four nozzles on the manifold.*rimshot*#corrections",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309163",
"author": "webmoocher",
"timestamp": "2011-01-19T14:39:48",
"content": "I’m game, but have they figured in fuel weight?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309168",
"author": "paul",
"timestamp": "2011-01-19T14:45:07",
"content": "holy s**t! I mean how will this be safe to use?“This looks like a job for… Legless Man!!”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309173",
"author": "Fluxon",
"timestamp": "2011-01-19T14:57:55",
"content": "Take a look at his page and you will see that the large shroud at the backside is kind of an impeller. This impeller simply moves air through the four manifolds. The impeller itself is powered by a outer ring of turbine blades which are driven by the jet engine.The design and build quality of this thing is pretty slick. I follow the monocopter for years now, but sadly there is no update for a long time now.Check out this side also (only german):http://www.mewatec.de/monocopter.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309174",
"author": "Iv",
"timestamp": "2011-01-19T14:58:14",
"content": "Where is the fuel tank ?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309184",
"author": "blarghmaster",
"timestamp": "2011-01-19T15:01:12",
"content": "judging by the info on the page, it seems that nice big duct is mostly for cold air… so no… you dont need to be legless to fly it…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309196",
"author": "DruidicDunderhead",
"timestamp": "2011-01-19T15:23:17",
"content": "The fuel tank (to respond to the many queries) is a blivet hanging on a tether and contacts last upon take off. > Like a testicle, it is similarly adjoined to the operator/pilot’s groin. Why not? This mound is not leaving the ground anyway.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309200",
"author": "PocketBrain",
"timestamp": "2011-01-19T15:28:34",
"content": "I’m thinking no… thanks, I’ll fly coach. Ain’t going to get very far anyway, with its power plant attached to a wall! :-D And how old is this link? They have a .avi file for video, not a YouTube link. What’s up with that?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309205",
"author": "Pilotgeek",
"timestamp": "2011-01-19T15:33:45",
"content": "As some have mentioned, this isn’t shooting fire or even hot air. It’s a turbine that propels cool air downward. I doubt this will be able to fly very high (more than about 50ft max), as it would mostly be ground effect.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309219",
"author": "Rob Wentworth",
"timestamp": "2011-01-19T16:00:27",
"content": "Youtube links:Monocopter engine test:http://www.youtube.com/watch?v=i_3wiqzW5dcAnd here’s a flying tiny manned heli:http://www.youtube.com/watch?v=2W3gamijezcAnd a rocketcopter:http://www.youtube.com/watch?v=mCl6UPeOoTgAnd a strap-on jet wing in flight:http://www.youtube.com/watch?v=j-66AcTo9TU",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309222",
"author": "speak_in_music",
"timestamp": "2011-01-19T16:01:14",
"content": "i’ll do it!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309237",
"author": "--j",
"timestamp": "2011-01-19T16:22:27",
"content": "> Looks to me like the pilot’s feet are going to get too much blast.There will be a cook-off… [heh]No, actually, if you _read_ the article, you will see that the three nozzles in the picture only conduct cold air. There is a fourth hot — very hot — nozzle coming off the gas turbine mounted on top (not in this picture) pointing more or less backwards with a steerable diffuser.The danger to the operator, other than just falling from altitude due to engine failure, appears to be the usual turbine failure modes — in which case you will probably be ripped to shreds before you hit the ground — or control failure.The control failures are (at least) failures of the nozzle controls, and failure of the dynamic flight controls. The flight control software to keep this thing stable has to be #1 on my list of worries. (See LLRV crashhttp://bit.ly/gTtNrtcaused by mechanical, and JAS Gripen crashhttp://bit.ly/g8dPIqcaused by flight dynamics software failure.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309240",
"author": "--j",
"timestamp": "2011-01-19T16:26:30",
"content": "[Correction] There are _four_ cold and and one hot nozzle making a total of five.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309242",
"author": "Techrat",
"timestamp": "2011-01-19T16:28:42",
"content": "Sorry, but if they are just using the FAN to blast air through the tubes it will never make enough thrust to lift off. I understand they are going to use a turbine to power the fan, but even 50k RPM doesn’t sound like enough to do it, given the small size of the fan.That’s like asking that new multi-purpose fighter we’re building to lift off with just the fan. (F-35?) — That requires a fan up front and jet thrust in the rear.They’d have been better off with a dual-ducted-fan approach, using two small gas turbines.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309244",
"author": "Necromant",
"timestamp": "2011-01-19T16:30:21",
"content": "Hm… Maybe those retards drinking beer in the yard would do?(Note for russians: гопники для тестов, самое то.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309245",
"author": "Charlie",
"timestamp": "2011-01-19T16:31:22",
"content": "At first glance I thought this was a picture of industrial rocket pants.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309248",
"author": "lwatcdr",
"timestamp": "2011-01-19T16:40:30",
"content": "impressive but wow the cost is huge and the risks even higher.I am more worried about the large fan holding together.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309260",
"author": "walt",
"timestamp": "2011-01-19T17:17:09",
"content": "am I the only one who, at first site of the photo, thought this article was going to be about big metal robot pants?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309264",
"author": "Bill Doorley",
"timestamp": "2011-01-19T17:24:40",
"content": "Bell Aerosystems built a turbine-powered jet pack in the early 1970s. (it was in Popular Science, but I haven’t time to find the link just now.) Unlike the Rocket Belt, which used corrosive hydrogen peroxide propellant and could only fly for twenty seconds, the Jet Belt could fly at 60 miles per hour for half an hour. The exhaust nozzles extended well away from the operator on either side, which not only mitigated some of the heat but made the controls more effective than if they’d been closer to the centerline.This design looks interesting, but I don’t know if they’ve thought the matter through.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309298",
"author": "strider_mt2k",
"timestamp": "2011-01-19T18:34:38",
"content": "“Flying chick magnet…”“DUDE MY SHOES ARE ON FIRE!!”“My SHOES are on FIRE!”(Go Team Venture)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309318",
"author": "Ellie",
"timestamp": "2011-01-19T18:56:28",
"content": "At nearly 300 pounds, any significant negative acceleration at landing will remove and/or render useless the wearer’s legs by a variety of painful failure modes.That said, the chap building it obviously has the money and engineering cred to give it a proper go. Best of luck to him.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309334",
"author": "Tom",
"timestamp": "2011-01-19T19:26:48",
"content": "I used to read this site yearrs ago, it’s been a long while since I’ve heard anything new from the guy.For those interested, have a look at his nano-turbine,http://www.technologie-entwicklung.de/Gasturbines/mu-Turbine__KP31_/mu-turbine__kp31_.htmlSome slick engineering, shame it doesn’t look like it was ever finished…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309340",
"author": "Hirudinea",
"timestamp": "2011-01-19T19:34:10",
"content": "Monocopter, eh? Should be called the Kamikaze!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309360",
"author": "vonskippy",
"timestamp": "2011-01-19T19:57:37",
"content": "Get a Unoobtu fanboy to test fly it. The world won’t miss one less of those fops.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309365",
"author": "Brennan",
"timestamp": "2011-01-19T20:02:20",
"content": "LOOK CLOSER. There are actually 19.5666 nozzles and counting stemming from the manifold.#Corrections(when will it end!)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309422",
"author": "zool",
"timestamp": "2011-01-19T21:47:08",
"content": "looks completely safe",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309441",
"author": "Chuckt",
"timestamp": "2011-01-19T22:25:03",
"content": "Where is the test dummy going to put his head? ROFL",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309512",
"author": "draeath",
"timestamp": "2011-01-20T00:20:11",
"content": "@TechratI’m fairly certain this thing weighs orders-of-magnitude less than your exemplary F-35.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309523",
"author": "chad",
"timestamp": "2011-01-20T00:39:09",
"content": "i’m game. you only live once, right?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309593",
"author": "Frogz",
"timestamp": "2011-01-20T02:09:40",
"content": "correction, there is ONE nozzle, the rest are open ended ductsalso, the gamebut whatever happened tohttp://www.popsci.com/military-aviation-%2526-space/article/2008-07/flight-jetpackand that other ducted fan backpack(i cant think of the name, it was more of a thing you stand in) popsci did?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309617",
"author": "rickroll",
"timestamp": "2011-01-20T02:49:26",
"content": "you’ll need some kind of exoskeleton/ultralight(aircraft) frame.500+ lb is impossible for the average flyboy.Also isn’t there considerable reaction torque as with a helicopters.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309669",
"author": "turbochris",
"timestamp": "2011-01-20T04:05:07",
"content": "I too have followed this project. as for the negative comments- not that long ago all your grandma’s were talking about these crazy ass bicycle shop owners who think they can defy God and fly like a bird.Andreas’s work is impressive. Richard Brown is doing pretty well also-http://www.jet-pack.co.ukI run a few turbine user groups and most of these guys are members.turbines are fun! pistons and cranks are so yesterday….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309696",
"author": "Spork",
"timestamp": "2011-01-20T04:51:44",
"content": "@turbochrisTurbines are great and should be used!… but not necessarily strapped to my back.I’d be quite afraid of crushing myself wearing that. Give me an emergency poweroff and a quick disconnect and I’d consider it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309710",
"author": "turbochris",
"timestamp": "2011-01-20T05:16:23",
"content": "Is it really any more dangerous than a helicopter?loose power, fall from sky! Sure, you can auto-rotate with a heli, but a ballistic parachute would make this just as safe.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309740",
"author": "Frogz",
"timestamp": "2011-01-20T06:04:34",
"content": "ballistic parachute? sounds like what i found when looking for the pop science fansuithttp://www.easyflight.com/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309791",
"author": "Verdi R-D",
"timestamp": "2011-01-20T07:51:18",
"content": "So where do you sign up?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309961",
"author": "Mr. Name Required",
"timestamp": "2011-01-20T11:20:00",
"content": "Whilst the engineering and manufacture looks respectable, I had to shake my head in disbelief at the use of vectored thrust nozzles… what a crap-load of complexity and extra weight for something that the Bell rocket belt dealt with by simply shifting the pilot’s body. That idea is proven, so this guy could have made a pivoting harness… but didn’t.More moving parts = more things to go wrong. It seems the designer is more interested in using hi-tech materials like Inconel, titanium, cf etc. than thinking about a safe way of getting down in an engine failure.No-one would want to fly in this, at best it would only ever be tethered hops with a safety line.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310709",
"author": "Tyler Santos",
"timestamp": "2011-01-21T04:33:19",
"content": "hey. im willing to test it if your serious. what state do you live in? i am currently located in MA please contact me if your serious atfireball9919@gmail.com",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,301.03468
|
||
https://hackaday.com/2011/01/16/binary-clock-using-logic-chips-and-mains-frequency/
|
Binary Clock Using Logic Chips And Mains Frequency
|
Mike Szczys
|
[
"clock hacks"
] |
[
"binary",
"logic",
"mains"
] |
[Osgeld] built himself a binary clock. He didn’t take the time to explain his project, but he did post beautifully hand-drawn
schematics and pictures of the circuit
(PDF) as he was building it. We’ve seen clock projects that
use mains frequency as the clock source
and that’s the route that [Osgeld] chose for his build. He started with a 9-12V AC wall wort as a power input. From there it’s just a matter of using a bridge rectifier to convert to DC, then a 7805 linear regulator to establish a steady 5V rail. A resistor and a couple of diodes allow him to pull the 60 Hz frequency off of the incoming AC, and then use a combination of 4000 and 7400 logic chips to count the pulses and keep track of the time.
| 29
| 27
|
[
{
"comment_id": "306445",
"author": "Bill Porter",
"timestamp": "2011-01-16T19:13:02",
"content": "Pretty nifty. Similar method to how I measured frequency and PF through the transformer powering my power meter.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306453",
"author": "mi6x3m",
"timestamp": "2011-01-16T19:24:21",
"content": "Osgeld sure used the whole palette of useful devices out there: 7805, 7400, 4000, hehe. A great idea to get the tact from the mains!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306465",
"author": "jim",
"timestamp": "2011-01-16T19:37:26",
"content": "“wart”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306468",
"author": "Fallen",
"timestamp": "2011-01-16T19:40:04",
"content": "That is probably the neatest hand drawn schematic I’ve seen. Well done.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306488",
"author": "Cricri",
"timestamp": "2011-01-16T20:07:30",
"content": "Binary Clock Noun * S: (n) an example of a perfectly usable device rendered unusable. This extremely easy to create device is typically built in order to impress people, look smart, and more importantly, hard core.See also: fitting square wheels on a car (making it unusable), web/wifi devices that need attendance to at least collect the product created (e.g. toaster, coffee machine), etc.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306491",
"author": "Osgeld",
"timestamp": "2011-01-16T20:09:50",
"content": "thanks graph paper and a ruler makes it pretty quick n easy, and mi6x3m just for completeness I even used a shift register as one of the frequency dividers :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306520",
"author": "amishx64",
"timestamp": "2011-01-16T20:59:08",
"content": "nicely done Osgeld",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306540",
"author": "mi6x3m",
"timestamp": "2011-01-16T21:37:24",
"content": "Osgeld, haha I suppose it was the 74HC595 or am I wrong? I actally have a whole bunch of them and use them quite frequently. I’ll be posting an interesting project to HoD this month where I made some nifty with a bunch of 595’s and the second best IC evermade, the 74HC123.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306556",
"author": "Osgeld",
"timestamp": "2011-01-16T22:00:36",
"content": "no it was a 74HC164 =)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306588",
"author": "Samuel",
"timestamp": "2011-01-16T22:26:51",
"content": "Why did he put a zener diode AND a rectifier diode for the mains 60Hz signal? A zener alone is enough.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306606",
"author": "Osgeld",
"timestamp": "2011-01-16T22:52:52",
"content": "I tried it with just the zener and ended up frying two 7805’s, would have fried more silicon if it were connected",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306696",
"author": "codeboy",
"timestamp": "2011-01-17T00:26:29",
"content": "Nice drawing! good work there , Osgeld.I’m no EE, but I suspect that the zener alone will build up a small charge (like a capacitor) during the positive half cycle of the AC while its conducting. Then, at the zero cross-over into the negative half cycle, the zener is forward-biased like a normal diode and there’s an in-rush of current into the negative half-cycle while all those holes and electrons (previously in avalanche) return to the standard depletion zone of the PN junction and the zener tries to behave like normal diode again. Thus, switching takes too much time, and your ground rail will bounce (spike) at each zero-crossing. The spikes probably killed your regulators. The normal diode doesn’t have this problem and conducts normally and quickly on the negative half cycle. One improvement I can suggest here.. replace R1 with D1 to present only the positive half cycles to your zener. Put R1 in series with your zener, after D1. Your circuit is basically a Full bridge in parallel with a half-bridge. It’s better to separate the full bridge from the half-bridge.Cheers!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306782",
"author": "George Johnson",
"timestamp": "2011-01-17T02:53:49",
"content": "Looks like a student of Forrest M. Mimms III, at least as far as the drawing goes.But please, it’s a wart, not wort. You use wort to make beer with, not electronics (although I often drink beer while designing and working with electronics).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306848",
"author": "Osgeld",
"timestamp": "2011-01-17T04:09:41",
"content": "without the details that is what I was showing on my scope codeboy, and good suggestion about swapping R1 and D1, it makes sincehonestly I am surprised about all the comments on my schematic, every project I have posted that has had one was done in the exact same style, but whatever heh",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306870",
"author": "Osgeld",
"timestamp": "2011-01-17T04:15:28",
"content": "oh and Cricri,nothing really better to do on a Saturday afternoon, not trying to be important or look impressive, just pissing time awayK thx",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306956",
"author": "andar_b",
"timestamp": "2011-01-17T06:14:25",
"content": "I think the point he was making is: Does anyone actually glance at a binary clock to read the time from? Sure, you CAN do it, but why? You CAN put square wheels on a car, but it doesn’t make it better.I don’t have any negative comments on the build itself, only a vague wonder why one would use such a device.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307046",
"author": "ID",
"timestamp": "2011-01-17T08:45:07",
"content": "I wear a binary watch and can read it easily and quickly. It’s really not that difficult. Heck, I had the battery changed at a watch place in a mall just before Christmas, and the girl running the place even set the time for me even though she’d never seen a binary watch before. It must be you.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307086",
"author": "Mike",
"timestamp": "2011-01-17T09:47:21",
"content": "Awesome project! I had intended to do something similar, and use the mains frequency to drive a timer for something else, but during research I found that the mains frequency isn’t that great at keeping time. The 60Hz is only nominal, and power stations will speed up or slow down their generators fractionally to cope better with demand, so in reality the mains frequency will go slightly above 60Hz (say 60.5 Hz) during the day, and lower than 60Hz during the night when demand is lower.Of course, this means the clock would run a few minutes fast during the day and then a few minutes slow during the night, but at the end of the day (literally), the slow period and fast period might cancel out somwhat, and you might only be off by a few minutes a month. But for my own project this kind of error was not good enough, and in the end, just went for a 32kHz crystal and RTC IC – dirt cheap, easy to use.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307131",
"author": "mi6x3m",
"timestamp": "2011-01-17T10:16:14",
"content": "andar_b, you are totally missing the point here, buddy. It’s an interesting project, because of the synchronisation mechanism. It is also an exercise in both digital electronics and AC. I’m sure no one is ever planning to use it as a real clock. And I’m sure you know that pretty well, but somehow you still insist to add a total pointless comment to the list.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307154",
"author": "strider_mt2k",
"timestamp": "2011-01-17T10:46:40",
"content": "Okay so you don’t need to do a write up to have your project posted.That requirement has been relaxed to many times you shouldn’t even have it as a requirement.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307528",
"author": "therian",
"timestamp": "2011-01-17T19:01:29",
"content": "@Mike there is no way stations increase or decrease mains frequency to manage load capacity, at first it do nothing to load capacity and at second they required to keep everything in sync with national grid or transformers will melt down so grid is precise to atomic clock unless you see smoke and fire around city",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1040603",
"author": "Corey Reichle",
"timestamp": "2013-08-14T16:32:11",
"content": "I don’t why mains frequency changes, I only know it does. Greatly. Anywhere from 65Hz down to 55Hz. I can see it change on my UPS. And, I have a frequency counter that uses mains frequency, and it’s the most unreliable frequency counter in my shack.",
"parent_id": "307528",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "307534",
"author": "Bill",
"timestamp": "2011-01-17T19:15:22",
"content": "@therianHalf true. Frequency does in-fact have a relationship with load. If demand is greater than generation, the frequency falls while if generation is greater than demand, the frequency rises. This is due to the response time of generation units. If the load spikes, the generators will slow down before the system can increase the ‘throttle’ to the unit to make up for it. Steam generators are the worse, because the slow thermal response. The converse is true when load falls, generators will over-speed.The grid is considered ok if ‘the daily average frequency’ is within 10 seconds of proper time which is no where near ‘atomic’ accuracy. The error is additive, and over time can become large.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307543",
"author": "Mike",
"timestamp": "2011-01-17T19:27:31",
"content": "@therian on further research, I only agree with one of your points. It turns out that I had it backwards – a drop in frequency is caused by the rise in demand (as opposed to raising the frequency to meet demand). But this still causes a discrepancy in timing.However, you are totally wrong to say that the grid is precise to atomic clock. From the article “NAESB WEQ Manual Time Error Correction Standards – WEQBPS – 004-00”, the introductory paragraph states:“Interconnection frequency is normally scheduled at 60.00 Hz and controlled to that value. The control is imperfect and over time the frequency will average slightly above or below 60.00 Hz resulting in mechanical electric clocks developing an error relative to true time. This Standard specifies the procedure to be used for reducing the error to within acceptable limits of true time.” source:http://www.naesb.org/pdf2/weq_bklet_011505_tec_mc.pdfThis doesn’t change my original conclusion though – a mains drive clock would be inaccurate in the short term over one day (the NAESB allows mains-clocks to be wrong by up to 10 seconds before applying correction in the East US), and therefore unsuitable for my project.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1041015",
"author": "Stone",
"timestamp": "2013-08-15T07:00:42",
"content": "In the UK, the frequency is (relatively) tightly controlled. I built one of these using large seven-segment displays and it ran for weeks without drifting noticeably. Amusingly, since it possessed a tenth-of-seconds display it was always much more precise than it was accurate, which was my deliberate joke :)There’s some info on mains stability here:http://wwwhome.cs.utwente.nl/~ptdeboer/misc/mains.htmlI used CMOS chips with a very high input impedance in the first counter stage of my clock, which had the interesting result that I could run the whole thing off a DC supply and simply attach a short wire antenna to the clock input – there was enough radiated signal coming out of the wiring in the walls to reliably clock it. After dividing by 5 (since we use 50Hz here) I simply cascaded a bunch of 40110 seven-segment-decoded up/down counters using ULN2003A drivers and included some discrete logic to roll over at the appropriate intervals (mod 60, mod 60, mod 24). Should really write it up one of these days!",
"parent_id": "307543",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "307809",
"author": "Dr. Bob Bob",
"timestamp": "2011-01-17T23:33:30",
"content": "I am thinking of building something similar to this but with 7-seg units. I was wondering if you had any noticeable problems with the “dirty” clock signal. I was thinking about adding another chip that had schmidt trigger inputs because that would be cleaner but I don’t know if the extra chip is really needed.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307840",
"author": "Osgeld",
"timestamp": "2011-01-18T00:21:41",
"content": "the 4017 seems pretty tolerant of crappy input",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "5569899",
"author": "Eduardo",
"timestamp": "2018-12-05T22:49:42",
"content": "What should be the changes to do for counting 24h?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "5570015",
"author": "Eduardo",
"timestamp": "2018-12-06T00:07:25",
"content": "I’ve made it and it’s working fine with 50Hz input.What should be the changes to make to count 24h?",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,301.09842
|
||
https://hackaday.com/2011/01/16/quiz/
|
Quiz-o-Tron 3000
|
Caleb Kraft
|
[
"Arduino Hacks",
"home entertainment hacks"
] |
[
"easy button",
"game"
] |
Who would have known that being given the task of planning a holiday party at a wine bar would turn into a hacking project? Well, here’s how that happened. A committee was in charge of the festivities and had decided on doing a mock game show. It wouldn’t really feel like a game show unless you had a contestant lockout system where the first one to hit the button gets a light and a sound while the runners-up get nothing. This is where [RoysterBot] comes in. He
built the Quiz-o-Tron
from 4 “easy buttons” from staples and an Arduino. After having finished it, he found the system to be somewhat lacking in the excitement area. When a button was pressed it only lit an indicator on the main Quiz-o-Tron box. He decided to add a small circuit inside each of the Easy Buttons using a 555 timer and some LEDs to give them some better feedback. Apparently he was going to patch into the speaker as well, but didn’t have time to get that added.
[via
Adafruit
]
| 19
| 18
|
[
{
"comment_id": "306329",
"author": "SS",
"timestamp": "2011-01-16T16:39:56",
"content": "Aaaagh! Another fun project posted in Intructables… When will people learn to stop posting good projects there? Instructables SUCK big time! I know it os free and just need to sign up, but it is lame!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "306337",
"author": "McGuiver",
"timestamp": "2011-01-16T17:04:49",
"content": "I would have done this with all relays minus the 555 timer. Kind of overkill for a microcontroller.",
"parent_id": "306329",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "306331",
"author": "strider_mt2k",
"timestamp": "2011-01-16T16:48:06",
"content": "Approved by Master Billy QuizBoy and Conjectural Technologies.How can they make your tomorrow better?(Go Team Venture)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306332",
"author": "st2000",
"timestamp": "2011-01-16T16:56:16",
"content": "My Staples has been sold out of Easy Buttons for-ever!Now I know where they went.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306342",
"author": "matt",
"timestamp": "2011-01-16T17:09:31",
"content": "yeah, you can do a light up/lock out system with 4 flip flops, just wire them into each others resets so once one is high the rest cant go high.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306360",
"author": "bWare",
"timestamp": "2011-01-16T17:43:41",
"content": "The quickest alternative is Buzz Buzzers, which are extremely cheep and USB HID so very easy to hook up to a PC to do the lockout, provide user selectable sounds, drive a display, and log the results.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306408",
"author": "paul",
"timestamp": "2011-01-16T18:16:58",
"content": "@SSI agree Instructables sucks. If anyone is looking for an alternative check out hackhut.comIts geared towards hackers and readers don’t have to signup to get full content.@RoysterBotI have never seen an easy button in person, is there a speaker in it?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306409",
"author": "DarkSim",
"timestamp": "2011-01-16T18:22:41",
"content": "Still don’t know why people hate Instructables so much. It is free to sign up for christ sake. You can have all the steps in a fairly decent PDF format, so who says you have to go through any pages or click on anything? Let it go, or help out the guy making HackTuT / other instructable clones.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306430",
"author": "Bill Porter",
"timestamp": "2011-01-16T18:50:08",
"content": "@instructable haters.Have you forgotten this gem already?http://daid.mine.nu/instructabliss/?url=http://www.instructables.com/id/Quiz-O-Tron-3000-Arduino-quiz-contestant-lockout-/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306439",
"author": "Brian",
"timestamp": "2011-01-16T19:01:04",
"content": "Tis is a project that just won’t die. I built mine in 1986! For those of you that can’t find easy buttons, this was my solution. Momentary push button in the end of a piece of PVC plumbing pipe. If you want to look very professional, use a rubber hand grip from a bicycle for the grip.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306444",
"author": "paul",
"timestamp": "2011-01-16T19:12:33",
"content": "@DarkSimIts true Instructables is free but so is hackhut.com. And at hackhut your work isn’t lost among crafts, etc., plus we’re trying to give you the features hackers need and we’ll listen to your ideas to add new ones.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306452",
"author": "Bill Porter",
"timestamp": "2011-01-16T19:23:48",
"content": "@PaulReally pushing your site huh? I applaud your attempt and agree someone should try to make a more friendly clone, but..Are you open to criticism? A standard blog is not the way to do it. Instructables had a good system before the requiring registration, ads and ‘noise’. I’d be trying to recreate the early years. It was friendly to navigate as an instruction manual. The pictures with hover over boxes for further detail work well. I don’t want to have to click a picture twice to increase it’s size.Also, the colors are hard on the eyes. Too dark, you need to break up with some light/white.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306469",
"author": "paul",
"timestamp": "2011-01-16T19:44:42",
"content": "@bill porterI don’t mean to be pushy, I really am just trying to create a place for hackers that is better and more focused. We may not be some large fancy company, but we are sincere.I am more than open to criticism, I need it.I disagree, I think the blog format works perfect for hacking. If you have a lot of info or steps you can create posts in chronological order easily, if you only have one small hack or need a seperate place for contact info, files, faq, etc. you can create a page. And yes we have tried keep the “noise” to a minimum.As for the clicking a picture twice for a larger version the author can choose to not have that happen when they embed a pic but I’ll look at ways to force all pics to be that way thanks for pointing it out.I thought the colors were good, very “hackerish” (is that a word?) But I could be wrong, maybe white text? what do the rest of you think?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306505",
"author": "paul",
"timestamp": "2011-01-16T20:36:00",
"content": "@Bill PorterOn HackHut.com:Ok I changed the the color of the text to white. is it easier to read?And I changed it so all new images posted from this point on should enlarge with just one click. thanks again for the tip",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306513",
"author": "wernicke",
"timestamp": "2011-01-16T20:48:07",
"content": "@paulre. the colors… I think the basic colors are fine, but that diagonal pattern/texture is what makes my eyes hurt.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306516",
"author": "Bill Porter",
"timestamp": "2011-01-16T20:52:57",
"content": "@Paul,I submitted an email through your “contact us” page on your site to take this up offline and not junk up the comments of a good project. I suggest others with critiques do the same.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306580",
"author": "Ian",
"timestamp": "2011-01-16T22:19:04",
"content": "Looks pretty neat. Only thing I noticed was the layout of the LEDs – 2×2 instead of 1×4 requires knowledge of how things are laid out ahead of time.Nice work.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307297",
"author": "Brian",
"timestamp": "2011-01-17T14:35:58",
"content": "@Paul Bill is right, the blog format isn’t going to attract people. Another thing you don’t want to do is promote your site by running down your competition. Better stands on its own. There are only two things that are important in business, innovation and marketing. If you are competing against Instructables, find 100 people who don’t like it and build something based on their input. And never, ever, assume just because you like it others will.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308052",
"author": "wa5znu",
"timestamp": "2011-01-18T07:18:49",
"content": "This project always reminds me of metastability.Here’s something from an old MIT course:http://www.fpga-faq.com/FAQ_Pages/synchronization_answers.pdf",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,301.157648
|
||
https://hackaday.com/2011/01/15/improving-a-hexapod-design/
|
Improving A Hexapod Design
|
Mike Szczys
|
[
"Robots Hacks"
] |
[
"hexapod",
"linkage",
"servo"
] |
[JC] built himself a hexapod based on a project he found on the Internet. It worked fairly well, but was mechanically weak and prone to breakage.
He set out to improve the design
and came up with the unit seen above. It uses three servo motors to control the six legs, and walks quite well as seen in the quick clip after the break. It’s not quite as agile as
the little acrobatic six-legger
we saw yesterday, but the movement is quite pleasing and it’s capable of moving forward, backward, and turning. [JC’s] post is four pages in all so don’t forget to seek out his links for the
construction
,
linkage
, and
servo control
pages to find concept drawings, cad designs, and his thoughts on the process.
[youtube=http://www.youtube.com/watch?v=yhaSGIUmF_0&w=470]
| 7
| 6
|
[
{
"comment_id": "305674",
"author": "JC",
"timestamp": "2011-01-15T22:50:42",
"content": "Hey thanks for the post Mike! I think HAD is a great site, so it’s awesome to be featured.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "305677",
"author": "Caleb Kraft",
"timestamp": "2011-01-15T22:57:14",
"content": "@JC,I saw your comment on another thread and passed it along to Mike. People should send us their projects instead of making us hunt them down!",
"parent_id": "305674",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "305851",
"author": "EFH",
"timestamp": "2011-01-16T01:57:54",
"content": "Really nice robot, but even better write-ups. Thanks for sharing all the great info, JC!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306812",
"author": "JC",
"timestamp": "2011-01-17T03:25:45",
"content": "@EFH, thanks for the feedback!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307669",
"author": "Mikey",
"timestamp": "2011-01-17T21:29:26",
"content": "Hack-a-day needs “like/dislike” buttons. I like this.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "327878",
"author": "eshal",
"timestamp": "2011-02-09T14:18:22",
"content": "cant v make hexapod without survos!!!I am trying to make it only dc gear motors!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "500398",
"author": "Audrie Looper",
"timestamp": "2011-11-05T13:39:21",
"content": "When work is a pleasure, life is joy! When work is duty, life is slavery.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,301.341132
|
||
https://hackaday.com/2011/01/15/two-generations-of-ocean-going-rov/
|
Two Generations Of Ocean-going ROV
|
Mike Szczys
|
[
"Robots Hacks"
] |
[
"rov",
"Tether",
"underwater"
] |
[Eirik] wants to help inspire others to take on big projects to he sent in
a link to his ROV project
. He started it about one year ago and the image above shows the first generation. After the break you can see the video that the ROV captured during a couple of it’s initial voyages. They’re pretty clear and right off the bat you’ll see the little guy following a jellyfish. Like a lot of
homebrew ROV’s
[Eirik] is still searching for the right way to pass wires through the housing without leaks. He does okay so far, and has designed a nice cable spool for the topside tether, but some water does get in. He’s almost finished the second generation which re-designs the camera mount to aim downward so that what’s in frame is more interesting.
[youtube=http://www.youtube.com/watch?v=HVrlLk5Ynh4&w=470]
| 19
| 19
|
[
{
"comment_id": "305565",
"author": "CutThroughStuffGuy",
"timestamp": "2011-01-15T20:20:43",
"content": "Waterproofing wires isn’t terribly hard to make for reasonable pressures (under 500 PSI although that’s something like 1,122 feet deep!).Start with a NPT nipple into the body of the robot. Then buy a NPT cap. Drill into the NPT cap to fit the wires you need to put through, then push the wire through it. Epoxy the wires in place. You will not be able to remove the wires again but if done right, you have 1″ or so thick of epoxy – which isn’t going anywhere and as long as the epoxy sticks well to the jacket material, you should be good to go. We did this with teflon coated wires and had trouble getting a good seal. PVC sticks pretty well.You can of course buy commercial versions of these “waterproof” wires in small to large sizes as well but the price is quite high. You can find ones suitable for vacuum, pressure, etc.“Cord grips” might also be helpful but only to a limited submersion range. Highly doubtful you can take those past 20 or 30 psi but that is still about 66 feet or so deep.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305576",
"author": "CutThroughStuffGuy",
"timestamp": "2011-01-15T20:29:08",
"content": "The types of seals you would be looking for in industry are fairly pricey and rather hard to locate.PAVE is one of the ones I have experience with:http://www.pavetechnologyco.com/tools/hermetic.htmlThese seem like they are worth checking out too:http://pdf.directindustry.com/pdf/conax-technologies/introduction-to-pressure-vacuum-sealing-assemblies-catalog-6100us/7421-13818-_2.htmlAnother idea would be to use Swagelok type fittings (Parker’s A-Lok series, Yor-Lok, etc) as in smaller sizes they are good to 4000+ PSI and are available in stainless steel (and titanium although the price is much higher) if you need saltwater resistance. A 1/4″ OD tube to 1/4″ NPT fitting in 316 stainless steel might run you $10 or so and be good for 4000+ PSI. That would be rated to at least 8979.59 feet!The hardest part about that though is that you have to make a rigid tube connection somehow. For something 100+ feet long, you need to be able to spool and unspool it but it’s something to think about.More about epoxy sealing:http://www.allbusiness.com/professional-scientific/scientific-research-development/120658-1.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305577",
"author": "jp",
"timestamp": "2011-01-15T20:32:34",
"content": "http://tinyurl.com/4fra9vx’nuff said.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305578",
"author": "strider_mt2k",
"timestamp": "2011-01-15T20:36:21",
"content": "Music is pure win.I like ROVs!I’m surprised no one filmed the ROV operators during the BP thing.Operating a vehicle via camera can be difficult and stressful.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305616",
"author": "jp",
"timestamp": "2011-01-15T20:42:20",
"content": "while the slip ring tether is interesting, the rest of the project is a bit more questionable…“I was never able to make the ROV entirely watertight, and as the main chamber filled with water the ROV would begin to tip backwards.” – yay for testing! (or not)“A note to anyone who none the less wants to use an unsealed hull solution, any water vapour trapped in your ROV will quickly fog up the interior.” – throw some desiccant in there?“All told, this project set me back roughly 500 USD” – really?“Once everything was stuffed (literally, it was a damn tight fit) I tested to make sure none of the connections had failed. With all checks good, I could proceed to potting the entire assembly in wax.” – or you could build use gasket and build a watertight enclosure out of something other that pvc…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305697",
"author": "Jack Sprat",
"timestamp": "2011-01-15T23:15:42",
"content": "Combine this hack with some evanescent wave coupling. Have a cable with an inductor on the end and line it up with an inductor inside the ROV. It might be easier to waterproof that way.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305711",
"author": "Karl",
"timestamp": "2011-01-15T23:40:05",
"content": "Just a thyought – There are hermeticly sealed [in a metal can] relays – 4PDT that would give you 14 pins thru glass on a metal plate.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305730",
"author": "Universaljoint",
"timestamp": "2011-01-16T00:39:58",
"content": "It would be messy and not exactly elegant, but how about filling the chamber with mineral oil? It doesn’t conduct electricity, it would prevent water from entering, and you could go as deep as you wanted because it wouldn’t compress.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305759",
"author": "haxorflakes",
"timestamp": "2011-01-16T01:06:51",
"content": "another thing for waterproofing is using pvc tubing with the cable running through it. you would have to buy a spool or two depending on how far you want it to be able to travel. also, a couple of home made underwater microphones would be cool. just use the same method for connecting those. a short length of pvc tubing to connect them from either side of the ROV to the microphones.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305814",
"author": "CutThroughStuffGuy",
"timestamp": "2011-01-16T01:37:08",
"content": "Hermetically sealed relays have a glass seal. I would imagine that they would implode at depth. What depth, I can’t say but probably only a few hundred feet? Plus – that gets you inside of the relay while the outside remains “wet” (and conductive). If some of those pins act as a path to ground… that may not work well. But this is about keeping water out of the submersible ile still allowing cables to enter. I don’t see how the relays accomplish that?Even water compresses. People say it doesn’t compress all the time but that’s not technically accurate. Underwater explosions – even techtonic events are no joke – the “throw” energy of those is…. unexpectedly large compared to what you would see in air (a compressible fluid).Of course it takes quite a bit – probably 10,000 PSI or more to compress more than a percent or two. But at 50,000 PSI, you are going to be somewhere north of 10% compressed.But that’s something near 112,245 feet deep if you convert it into depth numbers!The container holding the mineral oil would still be subjected to pressure from the water equally in every direction. Only now, the (presumably floppy) container would be imparting that pressure and transferring it into the internals of the submersible! You can build subs out of feet thick steel and at significant enough depths, that sub is still going to be squeezed quite a lot!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305878",
"author": "Bill",
"timestamp": "2011-01-16T02:59:40",
"content": "Now we’re talking my profession! (I work for the Navy, Unmanned Systems).Anyway, anyone interested in building their own basic ROV, check this site out:http://www.seaperch.org/indexIt’s a Federal Education Outreach Program where middle to high school kids build a basic ROV from cheap parts widely available. A full kit cost $125 if you buy it from them. But they also provide a parts list with sources and model numbers as well as online build instructions.I’m actually working to bring the program to a local museum as a summer camp for kids this summer.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306004",
"author": "medwardl",
"timestamp": "2011-01-16T06:43:24",
"content": "That’s great I’m glad you used the Mario water board music.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306045",
"author": "Jas",
"timestamp": "2011-01-16T08:00:59",
"content": "Remke Cord Connectors",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306221",
"author": "Tony",
"timestamp": "2011-01-16T12:05:31",
"content": "Great work ! Have a look at this one as well :http://myrov.wordpress.comTony",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306246",
"author": "Itwork4me",
"timestamp": "2011-01-16T12:37:38",
"content": "Dude. There is a jellyfish in the water…what is that guy doing standing 10 feet away from it? Unless he wants someone to pee on the sting…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306333",
"author": "MtotheB",
"timestamp": "2011-01-16T16:58:00",
"content": "If you fill the air voids with a non-conductive liquid such as mineral oil you can get by with simple o-ring seals to keep the water out. I’ve used this technique successfully with cheap LED flashlights down to around 100ft while scuba diving.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308601",
"author": "Luke",
"timestamp": "2011-01-18T21:55:58",
"content": "CABLE GLANDS!You can buy them from mcmaster carr (among other places), they are ip68 rated, many can safely go 10s of meters underwater. These are (as far as I can tell) the best way to pass a cable from the inside of a housing. The only (minor) caveat is that the cables must be round, generally not a big deal.After extensive research for an underwater housing I build for a dslr, I found cable glands were really the only acceptable choice for passing cables from the main enclosure to the smaller enclosure that housed the controls (just 2 buttons that share a common), so a 3-conductor round power cable worked fine.If you are running cable outs for power, a similar cable to what I used would do fine, if you are running data, I would imagine a good quality cat-5 type cable would do swimmingly (HAHA clever wordplay!)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308607",
"author": "Luke",
"timestamp": "2011-01-18T22:04:21",
"content": "Another important note on the PVC,some pvc is cellcore (depends on where you buy it, but the pipe will almost always be marked cellcore or foamcore if you look closely). I’m not entirely certain as to the specifics of the difference, but I know that:For the same diameter and wall thickness, cellcore is lighter, so it seems as though it is less dense, either that it is made from a different compound (I doubt), or it has been somehow aerated to make it less dense (there are no noticeable bubbles in the cross section).I’ve used solid sch40 6″ pvc to depths of 60ft with no trouble, and judging by it’s pressure ratings, I suspect my seals would fail long before the actual pipe did.Smaller diameter pvc pipes of the same schedule should have the same pressure handling capabilities, although perhaps slightly different since pipes are rated for internal pressure (a pipe can handle much more external pressure than internal)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401382",
"author": "Polymath",
"timestamp": "2011-06-03T14:28:48",
"content": "Why not use fiber optics to pass data through the “hull”? That way the only hole you have to make is one for the power cable. The “data window” if you will, would simple have photo-isolated ports sort of like a waterproof pegboard that the optical to electrical converters plug into.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,301.460022
|
||
https://hackaday.com/2011/01/15/converting-8mm-film-to-digital/
|
Converting 8mm Film To Digital
|
Caleb Kraft
|
[
"classic hacks",
"digital cameras hacks"
] |
[
"8mm",
"film"
] |
Many of us have these old 8mm family videos lying around and many of us have lamented at the perspective cost to get them converted to digital. [Paul] came up with a pretty slick way of
digitizing them himself
. He cracked open an 8mm projector and replaced the drive motor with one he could run at a much slower speed, allowing him to be able to capture each frame individually with his digital camera. He’s rigged his remote shutter control to the shutter of the projector so that it would be perfectly synchronized. There’s a video of it in action on the flickr page, and a video of the full 16,000 frame clip after digitization
here
.
[via
Make
]
| 24
| 22
|
[
{
"comment_id": "305420",
"author": "John Laur",
"timestamp": "2011-01-15T17:27:37",
"content": "Pretty good system; probably one of the best DIY transfers I have seen that isn’t a much slower manual process with a film scannerBut although it’s fast by comparison, it’s still slow enough that I’d highly recommend changing the bulb over to a broad-spectrum LED light source. If the machine jams while you are asleep you could be likely to wake up to melted/ruined film that you can never get back — or worse a fire.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305456",
"author": "Hubang",
"timestamp": "2011-01-15T17:51:48",
"content": "It’s a nice setup. With three big drawbacks. But all are solvable.Super 8 runs at 72 frames/foot. 50 foot rolls are all that’s available these days [3600 frames]. Some old rolls came in 200 foot lengths [14400 frames]. I have a few spliced together 400 foot reels (of regular 8, at 80 frames per foot). One or two reels won’t pose much of a problem. But when they start adding up, it’s going to put a lot of wear on the camera. A good pro DSLR will handle between 150k-200k shots before the shutter gives out. If you do this a lot, I recommend getting a good machine vision camera. About the same $$ as a used consumer SLR, and still mre than HD capable.Heat. The projectors are not meant to run cool. They rely on the film moving past the gate fast to keep the heat from damaging the film. When you do freeze frame, they kick on extra fans. Luckily, many of the old bulbs can be replaced with plug in LED modules. McMaster-Carr had them for my old Bell&Howell projector. They might for others too. The other upside is that LED bulbs will last way longer than a straight replacement bulb will.Lastly, diffusion. Not all projectors have adequate diffusion between the bulb and the film for evenly lighting the frame. This isn’t much of a problem when capturing reversal films (like Kodachrome or Ektachrome). But becomes critical when you want to capture reversal films (like Vision3). A bit of frosted glass or a couple of diffusion gels (with a LED bulb of course) would solve this cheaply and easily.I LOVE seeing projects like these! Great job!PS: Extra style points for shooting Pentax digital.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "532156",
"author": "Doug",
"timestamp": "2011-12-11T07:56:18",
"content": "Hello Hubang, did your old Bell&Howell projector have a DLH bulb in it? If it did can you give me a part number for the LED module that you got from McMaster-Carr. I’m very interested in converting my 466ZB Belland Howell projector to a LED lightsource since the OEM bulbs now sell for $100+.Thanks a bunch",
"parent_id": "305456",
"depth": 2,
"replies": [
{
"comment_id": "938003",
"author": "Zac",
"timestamp": "2013-01-11T21:03:14",
"content": "No, it was a DLD bulb. It also looks like McMaster-Carr stopped stocking LED projector bulbs. At least, I can’t find it any more.",
"parent_id": "532156",
"depth": 3,
"replies": []
}
]
}
]
},
{
"comment_id": "305479",
"author": "Charles P. Lamb",
"timestamp": "2011-01-15T17:58:08",
"content": "Excellent hack. This gives a much better result than those machines which transfer to NTSC encoded video. NTSC cannot encode the full dynamic range of Kodachrome film. I am surprised at how well each frame is registered. I did notice a lot of dirt on the tranferred images. This could be corrected by manually cleaning the film and/or by incorporating Particle Transfer Rollers into the film path. The Partical Transfer Rollers would work very well at the low speed used. Seehttp://www.seapavaa.org/FilmPreservationHandbook/Treatments/PTR.htm",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305495",
"author": "Gravy",
"timestamp": "2011-01-15T18:18:09",
"content": "Great hack if I ever saw one. I have to wonder about the camera’s shutter life, though. Even if it is good for 100,000 exposures, doing this sort of thing will chew that up fast.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305500",
"author": "Andrew",
"timestamp": "2011-01-15T18:25:49",
"content": "@Charles: I think part of the charm of this is that the particles transferred over to the film. It really maintains the look and feel that would come from watching that 8mm film.I do think that John’s idea would definitely be worth a look. I had a projector jam on me and melt some priceless family film. Since then, I’ve switched anything I have over to LEDs. That might be worth a writeup and submission in and of it self….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305525",
"author": "sneakypoo",
"timestamp": "2011-01-15T19:02:15",
"content": "Am I the only one who could only think about the shutter count on that poor camera? :P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305536",
"author": "paul",
"timestamp": "2011-01-15T19:17:50",
"content": "what is the shutter life of a digital camera? if its 5million than not big deal, 1mil is another story.dude you should start a transfer service. make your hack pay for itself and then some!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305542",
"author": "sneakypoo",
"timestamp": "2011-01-15T19:40:05",
"content": "Shutter life can vary quite a bit but I found this that seems relevant for his camera:http://www.olegkikin.com/shutterlife/pentax_k100d.htm",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305566",
"author": "captainbacon",
"timestamp": "2011-01-15T20:21:17",
"content": "Just did the same thing without modifying a projector. Just project onto a matte white card, roughly 3 feet from the projector. Most low-end models can be or will naturally be focused at this range. Get a decent video camera and set it up parallel to the projector. Zoom and focus (I found it easier to focus on a sheet of paper with black and white print before runing the film). Correct cropping, etc later.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305714",
"author": "rickroll",
"timestamp": "2011-01-15T23:41:08",
"content": "I have to agree the limited lifetime of a DSLR shutter mechanism (the top of the line D3 or 1D are rated for ~300,000 actuations) really make this more academic than practical.The movie studios use some kind of purpose built scanner to digitize old films (saw on some television program).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305719",
"author": "neorazz",
"timestamp": "2011-01-15T23:58:38",
"content": "oh someone beat me to it…i was going to do this with an aurdino and a powershot loaded with chdk using a sensor to trigger the shutter and also control the motor speed this could also facilitate fan control and thermal protection alas i haven’t gotten any farther than acquisition phase",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305888",
"author": "Rachel",
"timestamp": "2011-01-16T03:16:13",
"content": "Instead of LEDs, you could put an external xenon flash in the projector. Less power, less expensive, and much brighter.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305918",
"author": "Mr. Name Required",
"timestamp": "2011-01-16T04:11:07",
"content": "8mm videos lying around? :)I built a stepper motor attachment for a negative scanner, so I could do a dozen standard-8mm films.Then I chanced upon someone who did it professionally, with frame-by-frame DSLR imaging for $20/reel. In the end I just got them to do it as my own effort would have dragged out for a long time. I had the option of getting them on a playable DVD or as the raw frames in an AVI, I elected for the latter so I could post-process them myself.Better to just ‘get it done’ and preserve your family history NOW rather than put it off as a ‘gonna do’ because you never know if you won’t be able to do it – eg. house fire, film degradation or just plain misplacing or losing the films.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306262",
"author": "Merrick",
"timestamp": "2011-01-16T13:37:40",
"content": "DIY telecine:http://www.cine2digits.co.uk/and..http://www.super-8.be/an AVIsynth script to fix up the above:http://forum.doom9.org/showthread.php?t=144271and the video example:http://www.vimeo.com/13173031",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306400",
"author": "spiny norman",
"timestamp": "2011-01-16T17:56:57",
"content": "prospective",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306623",
"author": "Erik Johnson",
"timestamp": "2011-01-16T23:03:26",
"content": "This is how I did it about 12 years ago: A crappy VHS-ish camcorder lol.http://erikslaboratory.net/images/ProjectionXFerR.jpgIt’s nice having the actual projector running as the background noise in the film transfer, hearing the random sprocket pops, etc… I may re-do these with an HD camera soon, though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308354",
"author": "poot",
"timestamp": "2011-01-18T17:25:23",
"content": "What an idiot…That DSLR will be trashed after transferring one single movie. I would use a hi-res web camera, not something with a shutter.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308387",
"author": "P^2 - Paul",
"timestamp": "2011-01-18T18:03:50",
"content": "Thank you for your thoughtfully worded advice, poot, but I dispute your poorly-thought-out assertion that I’m an idiot.This was a retired dSLR with 50k shots on it already. The 17k more this project took isn’t significant. Want to put a number on it? 17k shots out of 250k expected, on a body worth maybe $200. That would be $14 well spent.$14 is cheaper than my time it would require me to even find a ‘hi res web camera’, even if it would be suitable. Which, BTW, out of the box it would NOT be.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "839917",
"author": "GregTheSquare",
"timestamp": "2012-10-27T17:36:07",
"content": "This is an excellent idea. One idea for the shutter is to perhaps defeat the internal shutter on the camera and just attache a rotating shutter within the projector mechanism (or use the shutter on the projector to begin with). Don’t let all these people get you down with their problematic observations. It’s people like you who just find a way to make things work.I’ve worked with a WorkPrinter 8mm transfer machine which uses synch pulses between the machine and our crappy DV camera. Looking at the mechanisms it’s just a few bridge contacts on a rotating wheel, a 20Kohm resistor and a yellow rca cable lol. ANYHOW I’m rambing, thanks for the inspiration!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "988057",
"author": "Devon",
"timestamp": "2013-04-02T05:54:59",
"content": "how about combining GregTheSquare’s advice with Rachel’s. defeat of the shutter on your camera, throw the whole setup under a black cloth or something to prevent outside light from getting in, and replace your projector lamp with a xenon flash connected to the camera. The shutter is always open, but no light hits the sensor until the flash fires. This solves concerns about backlight heat makes the setup a lot quieter (no fans, no shutter click), provides better lighting, uses less power, increases lifespan… ok i’ll stop. What do you think?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "1120095",
"author": "Aleksander Fremstad",
"timestamp": "2013-12-03T11:16:01",
"content": "Genius! Did you project the image straight to the sensor of your pentax or did you have the projector lens on there?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "2834200",
"author": "Preservetodvd",
"timestamp": "2015-12-12T04:51:38",
"content": "Brilliant Sir. Thanks for giving us hope to preserve the 8MM Film that was part our family and something I have to tell my children about their Grandpa -ma. But using external xenon flash in the projector is great. Its less expensive as well.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,301.39932
|
||
https://hackaday.com/2011/01/15/r2d2-wannabe-lacks-lightsaber-launcher-autonomy/
|
R2D2 Wannabe Lacks Lightsaber Launcher, Autonomy
|
Mike Szczys
|
[
"Robots Hacks"
] |
[
"projector",
"python",
"r2d2",
"star wars"
] |
Is this what the lovable Star Wars droid would look like without its protective skin?
This R2D2 inspired robot
is another Olin College of Engineering (where that
CNC cake decorator
came from) build developed by [Nathaniel Ting] and his classmates. Alas, it lacks autonomy, relying on an operator for guidance. But we enjoy it for the build quality. Two motorcycle batteries supply DC motors on the two rear legs of the trike. It can be driven with a wireless Xbox controller or through a Python interface that also randomly plays droid audio clips from the movie. That’s a tilting projector on top, which would be used to show Princess Leia’s pleas for assistance. That is, after the operator plugs in an extension cord to power it up. Oh well, it’s still a lot of fun to watch. See for yourself after the break.
[youtube=http://www.youtube.com/watch?v=0-aO1_3MCs4&w=470]
| 14
| 13
|
[
{
"comment_id": "305359",
"author": "Michael L.",
"timestamp": "2011-01-15T15:27:19",
"content": "Why not just add a circuit to convert the dc to ac that way you could use the batteries to power the projector too. Plus if this site has shown us anything it’s that autonomy is only a few sensors away.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305384",
"author": "Doublet",
"timestamp": "2011-01-15T16:21:16",
"content": "That would be stupid because of the not-that-good-efficiency and because the projector itself converts the AC to DC again.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305483",
"author": "cde",
"timestamp": "2011-01-15T18:02:52",
"content": "Pico projectors are selling in the hundred range. Can be powered by USB. And weigh like 6 oz. Please try again.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "305535",
"author": "paul",
"timestamp": "2011-01-15T19:13:28",
"content": "@cdeyup",
"parent_id": "305483",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "305492",
"author": "Chalkbot",
"timestamp": "2011-01-15T18:14:58",
"content": "Exactly my thought, cde.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305541",
"author": "strider_mt2k",
"timestamp": "2011-01-15T19:36:28",
"content": "yes, please go buy the latest stuff for your hack.(?)Do you people even listen to yourselves?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305549",
"author": "vonskippy",
"timestamp": "2011-01-15T19:54:53",
"content": "First the lame cake decorator now this – I’m guessing “Olin College of Engineering” is one of those “special needs” colleges right?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305574",
"author": "timmy",
"timestamp": "2011-01-15T20:27:43",
"content": "@ vonskippy=====yeah, they should just quit trying….give up. pfftLame comment vonskippy.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305630",
"author": "vonskippy",
"timestamp": "2011-01-15T21:26:33",
"content": "@Timmy!Don’t get your wheelchair spokes in a knot.I’m just saying it might be better to rename the school to “Olin College of Basket Weaving” or something like that.For some, it doesn’t pay to set the bar too high.After all, their current motto is “Taking MIT rejects since 2002”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305905",
"author": "cde",
"timestamp": "2011-01-16T03:49:53",
"content": "@strider_mt2k There is a difference between latest, and cutting edge. And there is a difference between home/business projectors, averaging 500 on the low end, and one of the pico projectors, nearly at 100 dollars now. Especially when you get a power and weight benefit, which is critical for most robots.Noone is telling him “Go spend 70k”. Was suggesting he be a bit smarter on what to use.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306345",
"author": "strider_mt2k",
"timestamp": "2011-01-16T17:12:50",
"content": "Understood, however you know how hacks can be.Sometimes you just have to use what’s available, and it looks like that’s what they did.Choice of materials is a totally subjective thing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307673",
"author": "Mikey",
"timestamp": "2011-01-17T21:36:53",
"content": "@cde word. The robot would be cheaper and not suck if he used a pico projector… come on people, think!Also, I’m fucking tired of R2D2 sound clips — how about somebody actually design an audio protocol that sounds like R2D2’s beeps that actually transmits *meaningful* digital data. The protocol would need redundancy and to be able to be understood with background noises, etc… but still. You could then use a cell phone app or another droid to listen to the data and receive it. Best of all you could probably do it with a single digital IO line from an MCU using PWM.This is a joke.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307676",
"author": "Mikey",
"timestamp": "2011-01-17T21:39:05",
"content": "(Further, it would be neat if the protocol was simple enough to be understood by humans without translation software… maybe closer to morse code than UTF8 over binary over audio beeps)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "358116",
"author": "IJ Dee-Vo",
"timestamp": "2011-03-14T18:02:52",
"content": "@Mikey then build one and p[ost it",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,301.302414
|
||
https://hackaday.com/2011/01/14/arduspider-entertains-children-and-exercises-pets/
|
ArduSpider Entertains Children And Exercises Pets
|
Mike Szczys
|
[
"Robots Hacks"
] |
[
"arduino",
"balsa",
"carbon fiber",
"ir sensor",
"spider"
] |
There are so many good things about [Jose Julio’s]
robotic spider
. It’s design is dainty yet robust, and the behaviors encoded in the firmware are nothing short of spectacular.
The body is built from a piece of balsa wood in between sheets of carbon fiber. The legs are carbon rods, using two servo motors for left and right leg movement, and a third servo which can move the intermediary legs like the roll axis of a plane. An IR sensor rides on the front for obstacle avoidance, with system control courtesy of an Arduino. For more hardware info
check out his build log
.
Don’t miss the video after the break. You’ll see that the little bot can be manually controlled, or allowed to roam free. As we said before, the behavior is fantastic. Not only has [Jose] programmed interesting characteristics like the spider getting tired and sitting down for a while, but when it is awakened it leaps into the air. The movements are fun to watch for human and feline alike; if only
your
house cat could be so lucky.
[youtube=http://www.youtube.com/watch?v=xqUhlYrN_Po&w=470]
[Via
Engadget
]
| 21
| 21
|
[
{
"comment_id": "304775",
"author": "Josh",
"timestamp": "2011-01-14T22:12:38",
"content": "That was… AWESOME!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304787",
"author": "zool",
"timestamp": "2011-01-14T22:40:27",
"content": "pretty cool",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304792",
"author": "arjan",
"timestamp": "2011-01-14T22:49:07",
"content": "Never seen a bot do so much with just 3 servo’s and so fast too!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304795",
"author": "zacdee316",
"timestamp": "2011-01-14T23:00:03",
"content": "That is badass! I would like to see a bipedal version of this. I bet that guy could pull it off.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304798",
"author": "Pedro",
"timestamp": "2011-01-14T23:01:44",
"content": "I’d love to see his take on a true hexapod (independently controlled legs)or even for the bot to live up to its name, and octapod version.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304815",
"author": "svofski",
"timestamp": "2011-01-14T23:12:34",
"content": "very very cool!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304839",
"author": "MrX",
"timestamp": "2011-01-14T23:47:49",
"content": "This is one of the best projects I saw in a while. I’m definitely going to base a design on this one.Thank you!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304840",
"author": "tantris",
"timestamp": "2011-01-14T23:49:17",
"content": "@aristotle: six legs would make it an insect not a spider",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304867",
"author": "Brad",
"timestamp": "2011-01-15T00:42:12",
"content": "I like the butt-scoot at 2:12. I didn’t know robotic spiders could get worms.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304871",
"author": "mark",
"timestamp": "2011-01-15T00:46:06",
"content": "Saw this on Engadget and fell in love with it. Beautifully designed robot and obviously a hit with its new owner.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304876",
"author": "strider_mt2k",
"timestamp": "2011-01-15T00:53:04",
"content": "Wow indeed!I’m floored at how much mobility and…and…expression it has!Really great one there. Well done sir.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304906",
"author": "paul",
"timestamp": "2011-01-15T01:20:26",
"content": "Most of the cats I have had would end up yanking a wire out. he should vac-mold a body for it",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304913",
"author": "vonskippy",
"timestamp": "2011-01-15T01:32:07",
"content": "Should call it “Happy Fun Bug”//spiders have 8 legs//",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304916",
"author": "Corey",
"timestamp": "2011-01-15T01:55:29",
"content": "This reminds me alot of the tiptoes robot an aussie friend by the name of ‘RifRaf’ was working on in #robotics on the Freenode irc network.check out the videoshttp://www.youtube.com/watch?v=-k-jhSLZ6xg",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304969",
"author": "Rad Brad",
"timestamp": "2011-01-15T04:11:35",
"content": "The Robot vs Cat part is great!Brad",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304979",
"author": "JC",
"timestamp": "2011-01-15T04:26:54",
"content": "Very cool build. I especially like the move where it puts both legs forward and “hops”. I built one myself that works on the same general principle:http://jcopro.net/2010/12/12/pegleg-the-six-legged-hexapod-robot-part-4-programming-and-servo-control/(it’s a hopefully pretty complete write up)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305098",
"author": "xszolix",
"timestamp": "2011-01-15T07:26:06",
"content": "http://www.flickr.com/photos/9836584@N03/sets/72157623215601373/detail/same from LEGO",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305100",
"author": "xszolix",
"timestamp": "2011-01-15T07:28:56",
"content": "http://www.flickr.com/photos/9836584@N03/4328908400/in/set-72157623215601373/same from LEGO",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305186",
"author": "echodelta",
"timestamp": "2011-01-15T09:52:49",
"content": "Turned turtle, the end.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305398",
"author": "juan",
"timestamp": "2011-01-15T16:40:46",
"content": "You should see his quadcopters!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305911",
"author": "Paul Potter",
"timestamp": "2011-01-16T04:02:59",
"content": "Superb.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,301.509913
|
||
https://hackaday.com/2011/01/17/nokia-internet-key-external-antenna/
|
Nokia Internet Key External Antenna
|
Mike Szczys
|
[
"Cellphone Hacks",
"Wireless Hacks"
] |
[
"antenna",
"internet key",
"nokia",
"sma"
] |
[Maurizio] was having some reception issues with his wireless internet and set out to
add an external antenna to the USB dongle
(
translated
). He had previously poked around inside of the Nokia internet key to find that the internal antenna was a flexible circuit substrate wrapped around a plastic box that made contact with main circuit board via a spring connector. This plastic frame is just right for mounting an SMA connector in just the right place for it to stick out the end of the case as seen in the picture above. It gives him better range, but since speed depends on how much traffic the wireless node is under, it’s not a guarantee that you’ll get a snappier connection after this hack.
| 13
| 13
|
[
{
"comment_id": "307719",
"author": "M4CGYV3R",
"timestamp": "2011-01-17T21:56:29",
"content": "Someone tell me how to do this with my brain. The reception lately has been a bit fuzzy.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307736",
"author": "ProfP",
"timestamp": "2011-01-17T22:11:34",
"content": "Very nice hack, especially as 3G dongles with external aerial connectors are now as rare as hens teeth (presumably as part of manufacturer’s drives to reduce unit costs)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307772",
"author": "Ed",
"timestamp": "2011-01-17T22:55:24",
"content": "Unless I’m mistaken, these devices use specifically engineered strip line antennas. If you’re going to hang “stuff” off it, the usual rules of impedance matching apply. I’m wondering if he considered such things ? Unless it was engineered to avoid mismatches, signal gain might actually be less than the OEM design.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307826",
"author": "Jake",
"timestamp": "2011-01-18T00:02:01",
"content": "@EdJudging by the quality of the “hack”, I highly doubt he considered such an important issue. He doesn’t even mention the impedance of the coax cable that he so sloppily attached to the SMA connector. 100 bucks says that the performance of this “hacked” unit is overall lower than its unmodified counterpart.You could say that this “hack” was “hacked” together by a “hack” ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307879",
"author": "Elias",
"timestamp": "2011-01-18T01:47:17",
"content": "Well I would say that most “external” antennas are matched to a 50 Ohm circuit so it is quite a safe bet to replace it like done here.Not like the original connectors to have the antenna contact are very high quality.With one connector only the input is balanced already so no further matching circuit is required.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307916",
"author": "therian",
"timestamp": "2011-01-18T03:05:24",
"content": "there is more than ohm law in RF design, I bet the reception get worse after hack due to mismatch created",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308118",
"author": "Malikaii",
"timestamp": "2011-01-18T09:08:25",
"content": "When I did research for my first cantenna, it was a recurring piece of advice that the ID of the cantenna be a factor of the wave height of your desired RF wave. So, when designing your cantenna it is recommended to make the ID 1/4, 1/2, or 1/1 of the size of the wave height to ensure proper reception. Do the same things not apply to the length of these types of external antennae?Is it correct to assume that the length of those antennae that they include with your wireless AP and router are all the same length because it is a factor of the wave height of a 2.4GHz wave? Or was that just some coincidence because of manufacturing considerations?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308220",
"author": "smoker_dave",
"timestamp": "2011-01-18T12:59:28",
"content": "You make a good point Malikaii. Even a quick Google search will show the correct way to design an antenna.Personally I think the link between device form factor and frequency of operation is almost purely coincidence but may be linked a little.There was always a drive for faster transmission rates, but just so happened the modern inventions of silicon integrated circuits, surface mount devices etc. This means we can build small devices, at around 1/4 wavelength of the high-speed signals. Of course, smaller components have also helped increase the speed of electronics too. The clock rate of processors in particular.Really this can be a problem, not only a benefit! If you have a small electronic device (something not designed to work with RF), each trace inside becomes like a small antenna (1/4 wavelength of 2.4GHz is around 30mm). This noise can cause problems in the device, like wild operation of micro controllers and digital logic.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308303",
"author": "uC",
"timestamp": "2011-01-18T16:03:06",
"content": "A little help to the non RF initiated.Antenna matching is critial to ensure that the power sent to the antenna is not bounced back to the reciever.Wikipedia link for more informationhttp://en.wikipedia.org/wiki/Impedance_matching",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308306",
"author": "uC",
"timestamp": "2011-01-18T16:05:43",
"content": "One great non electrical example from the wiki to get everyone thinking about this issue correctly.“The gel used in medical ultrasonography helps transfer acoustic energy from the transducer to the body and back again. Without the gel, the “impedance mismatch” in the transducer-to-air and the air-to-body discontinuity reflects almost all the energy, leaving very little to go into the body.”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308328",
"author": "Mikka",
"timestamp": "2011-01-18T16:36:43",
"content": "As shown in the following link, you could also buildone of the popular “kitchen strainer” antennas.I´ve build two from cheap cake-protectors for my friends. Simple but boosting up their UMTS reception …http://www.usbwifi.orconhosting.net.nz/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308510",
"author": "Maurizio",
"timestamp": "2011-01-18T20:10:00",
"content": "@Ed “..Judging the hack” dont worry, no ambition its only a cheap hack :)@all … sorry:cable was an RG 174 50ohm, but is not important ’cause it’s very short. (and not ground run around/along wire)M.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308602",
"author": "Travis",
"timestamp": "2011-01-18T21:56:35",
"content": "If the antenna is store bought it’s probably 50ohms. The problem is a lot of strip line antennas or chip antennas are not 50 ohms. Thus there are matching networks before the antenna which transform the impedance from the amplifier to the antenna. These impedances could really be anything so the only way to know for sure would be to use a Network Analyzer. If you don’t have access to one you shouldn’t be hacking on anything over 1GHz unless the impedances are stated.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,301.723464
|
||
https://hackaday.com/2011/01/17/tri-rotor-helicopter-with-full-autopilot/
|
Tri-rotor Helicopter With Full Autopilot
|
Mike Szczys
|
[
"Robots Hacks"
] |
[
"Autopilot",
"exposure",
"light",
"quadcopter",
"tricopter"
] |
Quadcopters stand aside, here’s
a three-rotor helicopter we think you’re going to love
. The body is made out of plywood and carbon fiber rods, keeping it light enough to be easily lifted by just 3 motors while making sure the force doesn’t tear the aircraft apart. Three gyroscopes, two accelerometers, three magnetometers, and a GPS module are all used in conjunction for an autopilot system. There’s a lot of great pictures and videos but our favorite, embedded after the break, shows the tricopter writing messages in the sky using light and camera exposure tricks similar to this
ground-based trike
.
[youtube=http://www.youtube.com/watch?v=7TZzM5YdKE4&w=470]
[Thanks Hernandi]
| 17
| 17
|
[
{
"comment_id": "307650",
"author": "Scott",
"timestamp": "2011-01-17T20:45:33",
"content": "I love it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307653",
"author": "Bill",
"timestamp": "2011-01-17T20:55:29",
"content": "Her name is Major Marcy, named after a real person with significance (either in the Navy or Nasa, can’t remember) and has been around for a while.The owner keeps better postings on DIYDrones. Here’s much better pictures of it in action.http://diydrones.com/profiles/blogs/la-vs-silicon-valley",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307671",
"author": "jim",
"timestamp": "2011-01-17T21:32:01",
"content": "Now to have it track people and keep annoying them.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307725",
"author": "spiritplumber",
"timestamp": "2011-01-17T22:00:24",
"content": "Beautiful!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307743",
"author": "Henrik Pedersen",
"timestamp": "2011-01-17T22:25:11",
"content": "Woaw this is an outstanding project…. Instead of seing octocopters and all that (bigger and bigger) we actually see one which is smaller…And even through everyone in hear properly hear this a lot, I can’t FUCKING wait to get my own UAV in the air, hopefully this summer.. Each time I see a post about one in here, I’m getting “ticks” from all the excitement! oO",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307791",
"author": "Matt",
"timestamp": "2011-01-17T23:16:27",
"content": "I’m a little confused on the physics of how this can be stable. With 3 rotors, you necessarily have at least 2 rotating in the same direction at any given time. Wouldn’t there then be a net angular momentum all the time, causing it to rotate?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307795",
"author": "Bill",
"timestamp": "2011-01-17T23:19:16",
"content": "@Matt,I think at least one of the motors can pivot, which I bet could counter the rotating force and/or let it rotate in place if commanded.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307842",
"author": "Dino",
"timestamp": "2011-01-18T00:27:59",
"content": "This is pretty awesome. Great use of multiple sensors for navigation. Nice!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307862",
"author": "Ilektron",
"timestamp": "2011-01-18T01:12:06",
"content": "No offense, but this is UGLY. There are much prettier tricopters out there. I guess it wouldn’t belong if it didn’t have wires hanging out!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307975",
"author": "Rob Wentworth",
"timestamp": "2011-01-18T04:53:13",
"content": "The tricopters can use any mixture of clockwise and counterclockwise rotors. The “tail” has a servo that can twist it to control rotation about the vertical axis. The Arducopter project can handle any mixture of 3 to 6 rotors, and uses the circuit board from Wii Multi-plus (less than $10 for Chinese clones), for the Gyros, and an optional Wii Nunchuck circuit board to control a camera gimbal, to keep a camera level when the copter tilts and banks.This video shows how responsive the cheap Wii gyros are in a tricopter:http://www.youtube.com/watch?v=GcpHA-U4-XA",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307989",
"author": "Rob Wentworth",
"timestamp": "2011-01-18T05:13:10",
"content": "More details on the TriWiiCopter design:http://radio-commande.com/international/triwiicopter-design/I plan to build my frame from PVC electric conduit, in a T configuration like this:http://www.rcgroups.com/forums/showthread.php?t=1363614Just for kicks — using an FPV tricopter to shoot fireworks at hydrogen balloons (double-click video for fullscreen):http://www.youtube.com/watch?v=ozHoP_YThRI",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307997",
"author": "Rob Wentworth",
"timestamp": "2011-01-18T05:26:37",
"content": "This video shows PVC T-copter frames, and a flying T-copter where you can see how the tilted tail motor compensates rotation:http://vimeo.com/18670886",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308149",
"author": "elektrophreak",
"timestamp": "2011-01-18T10:04:12",
"content": "oh man this is just great!!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308182",
"author": "Dan",
"timestamp": "2011-01-18T11:15:34",
"content": "wow the dynamics coding for this thing is insane O.o",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308305",
"author": "Rob Wentworth",
"timestamp": "2011-01-18T16:04:10",
"content": "Here is a summary of advanced quadcopter dynamics:http://decibel.ni.com/content/blogs/quadrotor/2009/12/11/control-simulation-part-2-the-lqr-controllerAnd here is a very sexy FPV T-copter and ground station build in progress:http://vimeo.com/18892813",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308336",
"author": "woutervddn",
"timestamp": "2011-01-18T16:46:05",
"content": "These kind of projects are awesome. I really really love this one because of the fact that is has only three motors. Strange to see many people choose an UAV heli instead of an UAV plane though..I’m still trying to figur how I’m going to land my UAV plane, any ideas for that? Laser guidance seems the best way to go..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310830",
"author": "hammy",
"timestamp": "2011-01-21T07:40:31",
"content": "How is he compensating for torque without having one of the rotors larger or having the other two running at lower RPM?You usually do these in moment couples, otherwise you have to fuck around with a tailroter etc",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,301.897797
|
||
https://hackaday.com/2011/01/17/is-your-camera-lying/
|
Is Your Camera Lying?
|
James Munns
|
[
"digital cameras hacks",
"Peripherals Hacks"
] |
[
"calibration",
"camera",
"lomography",
"photography",
"shutter"
] |
It is easy to rely on the ratings marked on different tools, whether it is a power supply, scale, or speedometer. However calibration is essential for any part that is relied upon either professionally or for a hobby. [Jeremy] wanted to see if his Lomography
camera shutter
really was only open for 1/100ths of a second when set to that. In order to test his rig, he set up an LED on one side of the shutter, and a high speed phototransistor to gauge the time spent open, using an oscilloscope to measure the time the reference point was pulled low. In his case, when the camera was set to 1/100, the shutter was actually open for closer to 1/150th of a second (the mean was 1/148ths of a second, with a standard deviation of 417 uSecs). This difference can make a large difference in picture brightness.
Be sure to check his blog for more pictures of the setup, as well as some useful part references and circuit diagrams.
| 25
| 25
|
[
{
"comment_id": "307450",
"author": "Spork",
"timestamp": "2011-01-17T18:02:43",
"content": "Interesting read, and I like the idea of designing an experiment to test a possible problem. At the same time I wish he had a solution to actually calibrate the shutter speed. As it is he just measures it, right?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307451",
"author": "nate",
"timestamp": "2011-01-17T18:08:38",
"content": "Ah, but did he also test his oscilloscope to make sure it was giving accurate readings? I kid…Even though the idea is pretty basic, this is a cool and fairly clever hack (and yes, I do consider it a hack). Good job!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307479",
"author": "Brian",
"timestamp": "2011-01-17T18:27:52",
"content": "Well, it is worth asking what kind of shutter he has in the camera. It’s a cool experiment, but different shutters act differently. One of the most popular high speed mechanisms is called:http://en.wikipedia.org/wiki/Focal-plane_shutterIt is just a little slit that slides across the frame. Given that he didn’t have a perfect point light source, it could skew his results.If you look at the Rigol capture, you would expect that the drop would be perfectly vertical (in a perfect world, with a perfect light source, etc.) It isn’t which implies that it is actually letting in more light.I’m not criticizing the hack at all – this is a cool experiment. The most interesting part is that he got a range of results in his 75 image sample.I wonder how a a higher end camera would react.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307487",
"author": "Cricri",
"timestamp": "2011-01-17T18:33:06",
"content": "Good/simple idea, simple application, and successfully gives a useful solution for a real problem. Defo a hack in my book. Thumb up.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307495",
"author": "fartface",
"timestamp": "2011-01-17T18:45:24",
"content": "Film has a LOT of forgiveness when it comes to exposure. The cheapie junky camera he uses is not designed for precise photography. It’s not lying, it’s just horribly inaccurate.P.S. his claim you cant get that kind of photo effect with a Digital camera… He never tried. a lensbaby does just that for dirt.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307519",
"author": "biozz",
"timestamp": "2011-01-17T18:56:29",
"content": "i thought HAD covered this before O_o",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307530",
"author": "Ghost",
"timestamp": "2011-01-17T19:03:34",
"content": "Interesting, i’d like to see the same test done on the big name cameras like Nikon, Canon etc…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307533",
"author": "James Munns",
"timestamp": "2011-01-17T19:11:50",
"content": "@biozz, Now that you mentioned it, I went back and found a similar story of someone completely different calibrating shutter speed, However this story provides a little more detail and some excellent pictures of the setup.Great spot though, even some of the writers miss each others stories some time.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307541",
"author": "Eric",
"timestamp": "2011-01-17T19:23:26",
"content": "I like the directness of this hack, but it wasn’t really necessary.The exposure time could have been calculated using just the camera and the resulting images:http://ict.debevec.org/~debevec/Research/HDR/#publications",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307557",
"author": "Osgeld",
"timestamp": "2011-01-17T19:49:14",
"content": "“”Is your camera lying?””probably yes, I have never trusted that SOB!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307570",
"author": "loans",
"timestamp": "2011-01-17T19:58:48",
"content": "I don’t understand why he’s worried about calibration when he describes himself as a lomographer. Isn’t the point to take terrible photos?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307649",
"author": "Jax184",
"timestamp": "2011-01-17T20:44:14",
"content": "The comments reveal that people are taking the wrong message away from this article. The test is not uncovering a flaw in the timing of real film or digital cameras that a normal person might buy in a store. It’s showing that $2 toy cameras being used for taking technically horrible photos under the guise of art have the sorts of problems you would expect them to. People buying proper cameras don’t have to worry about this sort of thing. There’s no scandal here.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307788",
"author": "Avaviel",
"timestamp": "2011-01-17T23:11:31",
"content": "In my photography work, I’ve noticed that the light meter lies. So it has ended up me getting to know my camera to get good shots, with the correct settings.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307824",
"author": "Tyler",
"timestamp": "2011-01-17T23:59:07",
"content": "If your light meter lies it is either a: not calibrated correctly, or b: not being used properly. The zone system is a good thing to get acquainted with. Being empirical is a fun way to approach photography but it rarely produces consistent results.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307825",
"author": "Sal_The_Tiller",
"timestamp": "2011-01-18T00:01:25",
"content": "But it’s a lomo.Isn’t it the entire point that the cameras are unpredictable?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307856",
"author": "Brian",
"timestamp": "2011-01-18T00:46:42",
"content": "You don’t need a high speed phototransistor. I calibrated a old mechanical SLR using a LED as the detector and a house hold lamp, along with my oscilloscope. Tweaked the cams and set screws and got it working pretty well.The rise and fall time for a typical LED are in the low microsecond range, many are sub microsecond. You can get a ns speed light detector with a run of the mill 850 nm laser diode…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307941",
"author": "jaded",
"timestamp": "2011-01-18T03:58:38",
"content": "@Brian,It’s not a focal plane shutter, it’s a very simple leaf shutter. I’m sure a focal plane shutter would behave differently. You’d probably have to design the experiment differently, too; perhaps recording three sensors, one each at the far edges of the film plane and one in the center.But this was cool for what he was testing. He learned that his shutter is half a stop darker than expected, not that it really matters with a Lomo.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307961",
"author": "jaded",
"timestamp": "2011-01-18T04:28:08",
"content": "@loansThe point is not to take terrible pictures, the point is to take lots of pictures.The fact that they’re being shot through a Lomo makes most of them terrible. But occasionally the distortions line up in a particularly pleasant (though not accurate) way with the subject material, and you get an artistic shot worth keeping.For the cost of all the film processing required to get that one decent shot out of the thousands printed, though, it’s probably more economical to buy a decent DSLR and learn how to take pictures that don’t require a freak accident to appreciate.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307974",
"author": "Brian",
"timestamp": "2011-01-18T04:53:04",
"content": "@jadedIt doesn’t matter if it is leaf or focal plane. The method is the same. I am just saying anyone with a 7 cent LED can use it as a detector if they want to do something like this.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308023",
"author": "Renee",
"timestamp": "2011-01-18T06:08:36",
"content": "I actually thought about doing this with my Diana F+I’m not really a fan of the Lomo philosophy and I generally dislike the idea of just blowing through film to end up with a happy accident.However, if you know what you’re doing with the camera and film you can actually turn out repeatable and artful results.Can it be done with photoshop? Depends, but once you know what you’re doing it’s much easier to just hit the shutter than to go through menu’s and settings and layer after layer in PS.That and I still firmly believe that film produces a finer tonality than digital.I have cheap throw away cameras, decent DSLR’s a scanner camera and some pinholes. They’re just tools to be used.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308028",
"author": "Simon",
"timestamp": "2011-01-18T06:23:02",
"content": "50% out is not bad at all. I service cameras from time to time and with some mechanical timing mechanisms, all the speeds affect each other – so to be within 50% might be the best you can do for some of the speeds.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308242",
"author": "nap",
"timestamp": "2011-01-18T13:42:58",
"content": "lomography is retarded anyway. who’d expect such pieces of junk to be accurate?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "329070",
"author": "Anthony",
"timestamp": "2011-02-10T14:48:18",
"content": "Thats really intertesting thought I am more keen on researching about the cameras but this is really something which i think is poretty impressive as I would have neverthougt of this things being of any importance especially when the time difference is like really microscopic. Jesus, i feel like reading F1 timings :). Anyways all i know about Cannon or Nikon is through som sites i visited like Testfreaks etc. Pretty neat info though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414210",
"author": "Paul",
"timestamp": "2011-07-07T14:44:58",
"content": "Is your test equipment lying?Such a simple setup with a photo transistor and a 10k pullup resistor (and long leads with unknown capacitance) could easily mean that the camera has an exact 1/100s shutter speed with an extra 50% error from your measurement setup.Sensor speed could be calibrated with a simple dc motor and a cardboard disk with some slots in it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414220",
"author": "Paul",
"timestamp": "2011-07-07T14:55:17",
"content": "I’m sorry, I must be sleeping.1/150s is shorter than 1/100s and as far as I know the turn-off delay of photogransistors is usually longer than the turn-on delay.But still. Without any information about sensor calibration or accurarcy I would not consider this fun experiment to have any “scientific” value as he claims it to have.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,301.671765
|
||
https://hackaday.com/2011/01/17/audio-crossover-back-in-service/
|
Audio Crossover Back In Service
|
James Munns
|
[
"Musical Hacks"
] |
[
"capacitor",
"crossover",
"Klipsch",
"speaker"
] |
Audio Crossovers are an essential tool for any high end speaker system. Because most individual loudspeakers are unable to cover the entire spectrum of audible sound as well as multiple drivers are, it is necessary to split the input signal into low and high frequency parts. When a friend of [Anthony]’s was about to send off a classic
Klipsch AA Crossover
to be repaired professionally, [Anthony] insisted it was possible to save some money and do it himself.
The oil can capacitors of the Crossover had gone bad, so a new set of metalized polypropylene capacitors were ordered to pick up the task. After carefully removing the old caps, [Anthony] assembled the new set on a breadboard, and mounted the board to the old
Crossover
base (along with some tasteful McDonalds straw spacers). The entire process is detailed on his blog, and we are sure his friend saved a good deal by this home repair method. Capacitor issues are a
common
problem
in repairing electronics new and old alike, and always a great place to start looking when devices start acting funny.
| 24
| 24
|
[
{
"comment_id": "307354",
"author": "fartface",
"timestamp": "2011-01-17T15:56:04",
"content": "“Audio Crossovers are an essential tool for any high end speaker system.”Nice to see the editor knows nothing about speakers… a Crossover is required in ALL speaker systems where there is more than 1 speaker with a wizzer cone. a low end 2 way speaker has a crossover in it it’s required in any speaker design.“high end” speaker crossovers are made from either oversized components to support huge amp loads or made from exotic sounding materials to make really stupid people (audiophiles) pay a lot of money for nothing.Crossover design is old and important part of speaker design if you want the speakers to last. Nothing like pumping 200hz or lower into the tweeter and midrange to make them go POP! some tweeters like ribbon tweeters will fry themselves if they get lower than 10,000hz to them.Masters in audio engineering is useful for something!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307380",
"author": "buckshot",
"timestamp": "2011-01-17T16:30:13",
"content": "@fartfacewhy the hostility?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307383",
"author": "osgeld",
"timestamp": "2011-01-17T16:34:07",
"content": "Guess it depends on your definition of crossover, yes even cheap speakers have SOMETHING, but its usually nothing more than a filter cap, which in my mind is just a filter cap, not a full crossover",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307384",
"author": "patman2700",
"timestamp": "2011-01-17T16:34:39",
"content": "(I can’t believe I’m saying this, but…) I’m with fartface. Seriously, even crappy RCA/etc. mainstream speakers have at least a small electrolytic capacitor to filter out the low end for the el-cheapo plastic-diaphragm tweeter.Not to downplay [Anthony]’s work, but this doesn’t seem like too much of a hack to me. I’m even researching crossover design so that I can make one for my custom bass speaker cabinet, but I’m not sure that I’d submit that to HAD.Now, if he changed the crossover parameters to allow for an electrostatic tweeter to be thrown into the mix, then THERE’S a hack!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307387",
"author": "patman2700",
"timestamp": "2011-01-17T16:37:12",
"content": "osgeld,Even a one-capacitor setup acts as a 6dB/octave 1st order crossover. Though I understand the logic, I’m basing this one off of a technicality.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307388",
"author": "matt",
"timestamp": "2011-01-17T16:37:54",
"content": "Worth noting that pro audio systems usually have crossovers before the amplification (active), while home and car audio typically have them after (passive).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307391",
"author": "Whoever",
"timestamp": "2011-01-17T16:39:42",
"content": "Furthermore multi-speaker designs for domestic applications are a thing of the past, modern high end is a single speaker with a factory-made FIR filter that brings it’s freq and phase response right up to “perfect”.Except of course it’s hard to make it look as “smexy” as a bunch of randomly thrown together speakers, so audiofooles still believe in a lot of speakers (to go along with the looks of their “smexy” untreated rooms :-).Also, I hate to be the one to say this, but… Repair != hack. Now I wouldn’t mind if it was a noteworthy repair, but this isn’t even noteworthy, it’s extremely simple and honestly not very well made.Good one the McDonald’s spacers though! I’ll have to remember that one. If anything it was worth for that. :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307413",
"author": "Fallen",
"timestamp": "2011-01-17T17:10:41",
"content": "I’m with osgeld. A single cap is just a filter. You need a filter for each driver, a LPF for the woofer and HPF for the tweeter. Running the woofer full range and the tweeter from 5kHZ up from a cap isn’t really crossing it over, as the woofer is still playing content above the 5kHz ‘crossover’ of the tweeter.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307475",
"author": "HARaaM",
"timestamp": "2011-01-17T18:15:14",
"content": "Is there a schematic for that?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307489",
"author": "Cricri",
"timestamp": "2011-01-17T18:35:28",
"content": "Nice to see old hardware being brought back to life, but that’s a waste of breadboard: for something as simple as a filter, I’d simply trim wires shorts, solder them in place, and protect with heat shrink.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307509",
"author": "Dino",
"timestamp": "2011-01-17T18:55:37",
"content": "Those old oil filled caps are usually what cause old tube amps to stop functioning. Nice to see old tech revitalized. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307540",
"author": "Urlax",
"timestamp": "2011-01-17T19:22:17",
"content": "He should have really hacked up a bic pen instead of a straw. Those are way too flimsy to support any load.The PCB weighs probably next to nothing, but still..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307646",
"author": "Durandal",
"timestamp": "2011-01-17T20:36:41",
"content": "Okay… all the philosophical discussion aside, a question for you specialists out there: I know the design and function of some passive crossover networks, but would someone be kind enough to explain what those two diodes (if they are indeed diodes) are doing there? I have never seen these in classic LC filter configurations….Thx!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307732",
"author": "Niru",
"timestamp": "2011-01-17T22:07:30",
"content": "@buckshot:re: hostility. . .“Audiophiles”. Audio Engineers. ’nuff said.This completes the lecture portion of your “Introduction to Internet Discussions” 103 Class.Please leave your multiple-choice final exam face down in the inbox on my desk. I will post your grade to the class-wiki within the next 6-12 days.I look forward to seeing you in class next semester. Thanks for your hard work!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307773",
"author": "echodelta",
"timestamp": "2011-01-17T22:55:59",
"content": "@ Whoever and all. It’s sad that home audio is now only about 5 tweeters and one woofer. Better to hear all the mpiss. Pentaphonic treble and mono bass, where formerly an INFINITE number of channels formed a solid (stereo) image across full range reproducers. People that accept this should only use floppy discs and use dial telephones, and dial-up internet at 2kb. And watch TV on a tube.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307798",
"author": "Whoever",
"timestamp": "2011-01-17T23:22:40",
"content": "@echodelta:I agree it’s sad that home audio is now a bunch of tweeters, not even a subwoofer on the tiny “iPod docks” kids use these days.As for the rest of your message, call me hard-a$$ed but I didn’t understand a word.. Could you elaborate?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307808",
"author": "patman2700",
"timestamp": "2011-01-17T23:32:57",
"content": "@WhoeverModern systems “cheat” using advanced electronics and active crossovers.Instead of having a dedicated tweeter, midrange driver and (possibly) a woofer for each individual speaker (i.e. 5 in a 5.1 setup, 7 in a 7.1 setup, etc.), modern systems simply use 5 (or 7) high-frequency tweeters to give the illusion of multi-channel sound. The x.1 subwoofer is not only used for super-low frequencies anymore, but also for the frequencies that used to have their own driver.The perfect example is the Bose Companion 3 speaker system. I’ve tried a friend’s set, and it’s just as echodelta said; the two satellite speakers are nothing but tweeters, whereas all of the midrange and low frequency sound comes from the woofer.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307867",
"author": "qwerty",
"timestamp": "2011-01-18T01:22:23",
"content": "regarding N+1 audio system, they have only one woofer because the human ear cannot sense the direction very low frequencies come from as easily as it does with higher frequencies.However, a good system should have N *low-midrange+tweeter* boxes and one subwoofer, not N tweeters and one woofer. The latter choice is a compromise imposed by cost or space issues, not audio fidelity.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307973",
"author": "ReKlipz",
"timestamp": "2011-01-18T04:51:24",
"content": "@fartface—“high end” speaker crossovers are made from either oversized components to support huge amp loads or made from exotic sounding materials to make really stupid people (audiophiles) pay a lot of money for nothing.—There is something to be said for the quality of components; apparently something you chose ignore.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308032",
"author": "paul",
"timestamp": "2011-01-18T06:30:35",
"content": "I like seeing old audio equipment being brought back to life ( currently i’m using an old Sanyo amp witch I bought nonfunctional and completely refurbished )but I think [Anthony] should have replaced the inductors with air core ones ( the iron core in the existing ones will saturate at high levels and distort the sound pretty bad ). As for ,,modern high end systems” only the cheap ones use the combination of speakers mentioned above , true high-end systems – like the Klipsch THX 2 Ultra have satellite speakers ( that are usually 2 way speakers by the way ) that go down to 50-60 hz",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308184",
"author": "strider_mt2k",
"timestamp": "2011-01-18T11:18:39",
"content": "Overall it is okay, but I agree: massive waste of breadboard and you could negate the soda straw silliness to boot.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308197",
"author": "Shox",
"timestamp": "2011-01-18T12:01:56",
"content": "must have been a slow day to report on a blog of a guy repairing capz",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308228",
"author": "Peter",
"timestamp": "2011-01-18T13:24:27",
"content": "I’ll bet the current handling capacity of the replacement capacitors is not the same as the oil-filled ones they replaced. However, as a previous poster said, it’s probably overdesigned.And the oil was probably PCB if they were as old as the rest of the components look.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308626",
"author": "Brennan",
"timestamp": "2011-01-18T22:38:09",
"content": "Just wondering, what do you audio buffs think of the Bose L1 PA system as far as design and sound? I’m curious because as an acoustic guitar player, it’s one of the best systems I’ve played through and it seems to have a rather non-traditional design, which is fairly typical of bose.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,301.787625
|
||
https://hackaday.com/2011/01/17/electronic-dice-has-option-for-20-or-100-sides/
|
Electronic Dice Has Option For 20 Or 100 Sides
|
Mike Szczys
|
[
"Arduino Hacks"
] |
[
"7 segment",
"arduino",
"dice",
"die",
"electronic",
"MAX7219"
] |
[Bluewraith] built himself an electronic dice using a 555 timer and 4017 counter. This is a classic project and he enjoyed doing it but wondered about making a 20-sided dice. So he grabbed his Arduino and got to work. A switch on
the final project
selects between 20 or 100 sides. He used a MAX7219 to control the 7-segment displays, and a standalone AVR chip for the rest of it.
If you missed it back in October you should also look in on
this 6-sided dice
. It also uses an AVR running the Arduino bootloader but a mercury switch allows the player to shake the box in order to start a roll.
One last note, we made a conscious decision to use the word ‘Dice’ instead of the grammatically correct ‘Die’ which is its singular version. We think ‘Die’ can be a bit too confusing and
we’re not the only ones
.
| 17
| 17
|
[
{
"comment_id": "307306",
"author": "Andrew",
"timestamp": "2011-01-17T14:51:23",
"content": "Drats! Just as I was about to release my 88 sided dice!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307315",
"author": "BoKu",
"timestamp": "2011-01-17T14:58:07",
"content": "100 sides would mean 3, 7 segment displays. I only see 2. So I assume that this ‘Dice’ includes the number 0? Which to me doesn’t really make sense since this is meant to be a digital representation of a real ‘Dice’ is it not, which can never roll a 0?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307319",
"author": "Mike",
"timestamp": "2011-01-17T15:03:27",
"content": "BoKu, 100 is probably represented by 00. Try to think outside the box, man ;-)I actually had a 100-sided die back when I played D&D. Oh the memories!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307342",
"author": "Akoi Meexx",
"timestamp": "2011-01-17T15:38:25",
"content": "+1 to Mike, I thought the same thing when I saw the two 7-segments.Funny, I was just looking up different things to do with a 555 timer earlier this morning.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307345",
"author": "C",
"timestamp": "2011-01-17T15:38:56",
"content": "10 sided dice are numbered 0-9 and a 100 is always denoted by two 0’s. It’s the only way to make rolling two dice work for getting a value 0-100. He has obviously kept the convention here. Anyone who needs to roll 01-100 probably is familiar with that particular convention.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307350",
"author": "BoKu",
"timestamp": "2011-01-17T15:50:47",
"content": ":p fair enough",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307351",
"author": "dmcbeing",
"timestamp": "2011-01-17T15:51:13",
"content": "Or could think even more outside the box and go HEX.Or be logical since a dice does not have to start counting from zero, that is it only has to have 100 discrete states (sides) so zero can be a prety valid state, no?ps:cs computer student here ;-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307358",
"author": "Simon Inns",
"timestamp": "2011-01-17T16:06:18",
"content": "A simple trick for random number generation is to start a counter running when the circuit is powered up (a simple variable running between 1 and 100 on a polled loop) and then read the value when the button is pressed. Since the button press timing is ‘random’ so will be the result.Nice project btw :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307412",
"author": "matbed",
"timestamp": "2011-01-17T17:09:06",
"content": "i like how you went with the use of the word “work” instead of “word”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307427",
"author": "Jake",
"timestamp": "2011-01-17T17:37:53",
"content": "Using an MCU for this project seems like a huge overkill, but I suppose the price of the few extra logic IC’s might justify the use of the atmel processor alone. I don’t think you can justify the use of an “arduino”, at least not from the cost perspective. Makes it easy for other people to duplicate the project, I guess.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307449",
"author": "Daid",
"timestamp": "2011-01-17T18:01:20",
"content": "Overkill? The MAX7219 isn’t really needed. As well as the XTAL (AVR can run on internal oscilator with easy for a project like this) and the AVR can be smaller (ATTiny2313?)I still have a 4x7segment display… guess I’ll be proving my point a bit later. Let’s see if I can get on HAD with real fancy dice then.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307494",
"author": "Mike Szczys",
"timestamp": "2011-01-17T18:45:19",
"content": "@Jake and Daid: I also thought that if the goal is the most efficient use of hardware, this is overkill. But I believe this is a project idea developed with the intention of learning how to use THIS hardware. So that makes it a success in my mind.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307730",
"author": "Daid",
"timestamp": "2011-01-17T22:04:18",
"content": "Darn, 7segment display has broken areas :'( no dice for me.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307768",
"author": "Spork",
"timestamp": "2011-01-17T22:48:16",
"content": "@DaidI’m not sure what you mean, you have a broken 7 seg. or you don’t like the fact that they have spaces between numbers?Pretty cool di(c)e. Next up a nixie tube version?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307877",
"author": "Daid",
"timestamp": "2011-01-18T01:44:11",
"content": "I have a broken 7seg (or a 4x7seg) one of the anode lines is broken internally making 1 segment not working for all numbers. A real shame.I would have made a version with just that display a tiny2313, a button. Packed in a tight space, as the tiny2313 could be behind the 7segments. For software I guess I could fit a selectable number of die and different types, like ‘throw 4d6’ as you can show a d on a 7seg.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308583",
"author": "bluewraith",
"timestamp": "2011-01-18T21:33:25",
"content": "Overkill? Hell yeah it was.. but really, I needed to get rid of some of the parts that I have. I’ve gotten a half dozen MAX7219s from free samples, and the AVR is always removable.As far as the random generation, its the built in Arduino random function. I have it seeded to an open analog pin reading, otherwise it will always be the same “random” when you power it on.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308665",
"author": "Sophist",
"timestamp": "2011-01-19T00:05:58",
"content": "So citing a Wiktionary (not even a Wikipedia) entry gives a writer authority to ignore standard English grammar? Try citing an authoritative source that changes the singular usage, die, into the plural, dice. A more careful examination of the entry on Wiktionary reveals that its justification, “that some authoritative sources state that ‘In modern standard English, the singular die (rather than dice) is uncommon. Dice is used for both the singular and the plural’,” is an uncited quotation, and a look at the citations page reveals that every cited usage of the plural form for the singular comes from a British (except for one Canadian newspaper) publisher. Thus, in the most optimistic view, you are trying to substitute standard British grammar for standard American grammar, rather than simply being a lazy writer.Do me a favour: can you get my fags from the boot of my lorry? (OK, I took a little poetic license with giving a lorry a boot, but that’s what my license is for!)",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,301.841591
|
||
https://hackaday.com/2011/01/16/electrodes-turn-your-eyelids-into-3d-shutter-glasses/
|
Electrodes Turn Your Eyelids Into 3D Shutter Glasses
|
Mike Szczys
|
[
"Medical Hacks",
"Video Hacks"
] |
[
"3d",
"electrode",
"eyelid",
"real or fake",
"shutter glasses"
] |
[Jonathan Post] has a way to watch 3D video without wearing shutter glasses but it might be kind of a hard product to break into the market. As you can see above, a pair of electrodes are stuck on a viewer’s eyelids,
using electricity to alternately close each eye
. The video after the break shows a demonstration of this technology. Obviously a camera can’t capture the image that the viewer sees, but this man describes a perfect 3D image. This reminds us of those ab exercisers that use electrodes to stimulate the muscles. Do you think a 3 hour epic would leave your eyelids tired and sore, eventually resulting and a steroid-esque muscle-ridden face?
Edit from [Caleb]: Judging from the comments, some people believe this to be an absolute impossibility. While we concur that this example is pretty silly (what’s powering those electrodes?), we invite you to watch [Daito Manabe]’s
facial electrodes fun
.
[youtube=http://www.youtube.com/watch?v=Uef17zOCDb8&w=470]
[Thanks Keba]
| 153
| 50
|
[
{
"comment_id": "306558",
"author": "Girrrrrrr2",
"timestamp": "2011-01-16T22:04:16",
"content": "Yeah… I will stay with the glasses…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306562",
"author": "bolke",
"timestamp": "2011-01-16T22:07:13",
"content": "As long as there is no proof, there is no product. I can stick 2 pcb’s with random components to my head and blink real fast, telling the world I’m seeing pink elephants. This is about as usefull as a post about scientology.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "306570",
"author": "Alexand3rS",
"timestamp": "2011-01-16T22:12:13",
"content": "Try to alternate blinking your eyes that fast -_-",
"parent_id": "306562",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "306566",
"author": "Alexand3rS",
"timestamp": "2011-01-16T22:11:25",
"content": "If he gets them going fast enough he could make it look like his eyes are always open.He could be the KING of Staring Contests!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306567",
"author": "Sly",
"timestamp": "2011-01-16T22:11:35",
"content": "Fake,60 blink per second for muscle, naaaa.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306571",
"author": "NegativeK",
"timestamp": "2011-01-16T22:12:25",
"content": "Say it with me now: Satire.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306572",
"author": "Bob",
"timestamp": "2011-01-16T22:12:45",
"content": "fakethis would be incredibly painful after a couple seconds",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306576",
"author": "Tech B.",
"timestamp": "2011-01-16T22:16:20",
"content": "I LOLED so hard on this. I agree, sticking with the glasses.+1 for making my day XD.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306577",
"author": "lampshade",
"timestamp": "2011-01-16T22:16:41",
"content": "It’s a joke, folks! (read: “not real”) It was funny at first, now it’s just sad to see how many people are taking this seriously.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306578",
"author": "Whoever",
"timestamp": "2011-01-16T22:17:43",
"content": "LOL no doubt it works here, but that must feel funny.. And the flickering must suck :-P+1 “will stay with the glasses”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306581",
"author": "andrew",
"timestamp": "2011-01-16T22:20:28",
"content": "I think your eye-lid muscles would become fatigued after just a few seconds. No one’s going to use this for gaming without some serious endurance training first.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306583",
"author": "Lame",
"timestamp": "2011-01-16T22:23:56",
"content": "Obviously fake. Unless hackaday is trying to troll us now",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306585",
"author": "spiritplumber",
"timestamp": "2011-01-16T22:25:04",
"content": "Interesting take on a problem, but it strikes me as a really bad idea…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306591",
"author": "CutThroughStuffGuy",
"timestamp": "2011-01-16T22:32:19",
"content": "This is clearly so fake it’s amazing people think otherwise.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306592",
"author": "Erik Johnson",
"timestamp": "2011-01-16T22:36:03",
"content": "Hooray for early-onset cataracts!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306593",
"author": "acacia",
"timestamp": "2011-01-16T22:36:36",
"content": "Wow, that looks painful",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306594",
"author": "neorazz",
"timestamp": "2011-01-16T22:39:35",
"content": "for m/ankind sake i hope this is fake",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306597",
"author": "jimboa",
"timestamp": "2011-01-16T22:44:29",
"content": "Imagine the eyelid muscles you can get with this! Iron man eyes!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306602",
"author": "cknopp",
"timestamp": "2011-01-16T22:49:54",
"content": "I think its real, and when they get it using speakers for virtual surround sound it will almost complete.I think these are going to be the “Cell Phones” of 2020. Possibly going further than this, and using Direct Sensory Input (DSI).Its gonna get crazy in our lifetimes!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306603",
"author": "phishinphree",
"timestamp": "2011-01-16T22:49:55",
"content": "this is obviously fake. why is it even posed here?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306605",
"author": "zool",
"timestamp": "2011-01-16T22:50:50",
"content": "*sigh* why is this on hereit’s fake",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306612",
"author": "NatureTM",
"timestamp": "2011-01-16T22:56:31",
"content": "Yeah, looks fake to me. I wish it wasn’t.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306615",
"author": "arjan",
"timestamp": "2011-01-16T22:57:32",
"content": "I could open a shutterglass, add a little HV transformer to the wires that normally power the LCD, stick these components (that are really the size of a penny) to my head and I’d be done. What I find funny is that he turns the 2 devices on with 2 separate remotes. A high pitch sound appears and disappears after a few seconds?!?! OH, haha! now I see! after he “turns the devices off” his eyelids keep blinking! how is that! I guess he is just a blinkmaster who bet he can set-up a hoax using 2 led throwies and adhesive tape. haha. He almost got me! Too bad he forgot to stop blinking after he turned the devices off…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306616",
"author": "j_jwalrus",
"timestamp": "2011-01-16T22:58:53",
"content": "because it was on engadget.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306617",
"author": "Alex",
"timestamp": "2011-01-16T22:59:16",
"content": "I’m sure that would get pretty painful after a few hours.Also, does that guy remind anyone else of General Zod?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306618",
"author": "evaprototype",
"timestamp": "2011-01-16T22:59:30",
"content": "He has an accent and speaking english he cant be fake.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306620",
"author": "zing",
"timestamp": "2011-01-16T23:01:56",
"content": "Hey, you’re 2 and a half months early for April Fool’s.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306624",
"author": "cpdongolev",
"timestamp": "2011-01-16T23:03:35",
"content": "a fun idea, if nothing else.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306626",
"author": "arjan",
"timestamp": "2011-01-16T23:07:47",
"content": "I keep thinking about it: I bet someone could make this kind of shutter-eyelids. I’m not so good with HV, the electrode must be on the eyelid-muscle and I guess you need another electrode for closing the eyelid, but I would call this “plausible”. Fake on the vid, but possible to do. Oh, the freq might need to be tuned down a “little” I can imagine flapping and flopping sounds if I tried to tie 60Hz to my eyelids. Or maybe .00001157407 Hz to make my eyelids close automatically every night when it’s time to go to sleep? Hmm… no…not for me. I should connect that version to my little son.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306629",
"author": "Tokamak",
"timestamp": "2011-01-16T23:13:19",
"content": "It is a viral campaign, not hack! -_-‘",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306632",
"author": "Justin",
"timestamp": "2011-01-16T23:15:25",
"content": "“You have no glasses, so you can really enjoy the show!”Just like South Park’s “Well, it beats dealing with the airline companies!”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306633",
"author": "Dino",
"timestamp": "2011-01-16T23:16:16",
"content": "Given that this IS real, repeatedly doing this would almost certainly lead to damage to the eyelid muscles.No thanks. I can see in 3D already, and I don’t need it on my monitor.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306638",
"author": "dmcbeing",
"timestamp": "2011-01-16T23:28:36",
"content": "It was also on Gizmodo…As a concept it’s seems good but i hardly think its true for a few reasons:1:I dont think our eye lids can open and close at something near 25hz let alone 100hz which is considered the standard refresh rate noadays.2:Electricity has two poles and curent flows from one pole to the other.So for the eyelid to open and close the two poles should be on the sides of the eyes one on each side of the eye.3:Is there a single 8-DIP chip that can create electrical impulses enough to move an eyelid muscle from non existant batery , and hold together with gum?I doubt this is true, let alone when there is no documentation at all.Correction:I am certain this is fake.I hoppe HaD was joking.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306641",
"author": "Ben",
"timestamp": "2011-01-16T23:29:27",
"content": "It’s a joke guys. A deadpan joke. The guy is a special effects wizard in France.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306643",
"author": "ohsofake",
"timestamp": "2011-01-16T23:33:28",
"content": "I cant believe this is on here…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306648",
"author": "CutThroughStuffGuy",
"timestamp": "2011-01-16T23:36:36",
"content": "HAD is posting this as if it is completely legitimate when clearly it is not.The only reason it seems plausible is because it is possible to incite muscle contractions with electricity but seriously people? There are multiple levels of “totally hoax” written all over this. It’s am amusing video (arguably) but for HAD to post it with the tone and credibility as if they are presenting a fact does not reflect positively on the editors.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306649",
"author": "ferdinand",
"timestamp": "2011-01-16T23:37:42",
"content": "is this the russian version off 3dit looks or hy get a epeleptic atack or sothis cant be good for you",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306655",
"author": "DarkFader",
"timestamp": "2011-01-16T23:42:27",
"content": "I hope nobody takes this serious. There’s no question about it. I’d rather see a Nintendo-On II video.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306656",
"author": "Matskat",
"timestamp": "2011-01-16T23:43:25",
"content": "I never comment here but I MUST on this one.I’m SO surprised at all the youtube-esque “Fake!” posts…are we fucking CHILDREN HERE?How is is so hard to reason that with the right frequency of stimulation, that an electrode could not produce RAPID alternating blinking?For a bunch of hackers, I see WAY too many “This is fake!” comments.Hack-a-Day isn’t some fly by night site like “Break.com” or something – how is it so hard to believe that this is real?I certainly cannot blink THAT fast , alternating eyelids…has anyone here ever used electrodes to stimulate muscles? They can be set to VERY high rates of contraction…how is this so unbelievable?Just wait – 10 years from now all you guys are gonna be sitting in front of 100 inch AMOLED screens – with fucking electrodes taped to your faces, extolling the greatness of the tech – looking down your noses at the squares who still watch their 3DTVs with OMGZLOL!?! GLASSES?!?I’ll remember this as the day that the Break fans stumbled upon HAD….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306657",
"author": "dudeguy",
"timestamp": "2011-01-16T23:44:31",
"content": "I’ve screwed around with electric muscle stimulators before and I can verify that this idea is totally plausible. If you put it to your temple it will close your eyelid. I’ve done it before. All I wanna know is how the hell are those little things being powered? The muscle stimulators I’ve used were powered by a 9v battery. Even if this is a hoax, I’m sure that the idea could actually be pulled off for real.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306667",
"author": "TheBadWolf",
"timestamp": "2011-01-16T23:55:46",
"content": "Maybe it’ fake but it rises a good question:How about having that kind of switch just “cut” the feed of the optic nerve to the brain,no eyelid boosted muscle,no crazy blinking,just 3D from inside,would be cool.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306668",
"author": "fluidic",
"timestamp": "2011-01-16T23:56:01",
"content": "This video does a great job of demonstrating that most of our technology is already in the realm of magic for most people.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306679",
"author": "Zibri",
"timestamp": "2011-01-17T00:11:44",
"content": "Are you crazy to post this video without saying it’s a fake?The guy can’t even keep himself from laughing :DCome on!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306688",
"author": "mrasmus",
"timestamp": "2011-01-17T00:22:18",
"content": "It’s a clever video that way too many people are falling for.Putting aside *everything* wrong with the technology supposedly behind it, the simple impracticality of it, the wear is would presumably put on the eyelids, and all that jazz, there’s a simple, logical way that everyone should be able to spot the fake — his claim that there’s no reduction in brightness of his vision, as though there was nothing going on in the first place (not wearing anything in front of his eyes, all that jazz). There’s a reason why a TV screen gets dimmer when you look at it through shutter lenses — because only half the emitted light is getting to your eyes. That’s the point — half the light is for your right, and half is for your left; that’s the fundamental concept of stereoscopic 3D. Same is true for polarized lenses (“passive” glasses, like in the theatres) — they block the light polarized for the other eye. It seems dimmer because it *is* dimmer. The concept of blinking really fast, in time, if it were somehow to be made possible, is just going to block your entire vision half the time. While you might get a fluid picture (thanks to Persistence of Vision (POV), which HaD has featured products about *countless* times in the past), that doesn’t mean it’ll be just as bright. It’s just like dimming an LED by flickering it really fast — it may look solid if it goes fast enough, but if it’s off half the time, it’s not going to look as bright as when it’s on all the time.This is just a massively successful trolling, and I wish the entire internet were in on it… but instead, people just try to avoid thinking whenever possible. Come on, guys… just… come on. You’re giving me more of a headache than that guy would’ve had, were he actually blinking that fast.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306695",
"author": "nodoctor",
"timestamp": "2011-01-17T00:26:00",
"content": "Some studies of physiological side effects should be done IMO.Especially since I heard the guy in the picture was black and clean shaven before he turned on his contraption.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306701",
"author": "adhs",
"timestamp": "2011-01-17T00:32:58",
"content": "that guy is obviously confused by 3d bullshitting and his inability to talk to women…“reduces crowsfeet up to 15%”there you go ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306708",
"author": "Hawaii00000",
"timestamp": "2011-01-17T00:41:48",
"content": "Absolutely no side effects!! *twitch* *spasm*",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306710",
"author": "Davo1111",
"timestamp": "2011-01-17T00:48:18",
"content": "Its not practical, but AWESOME proof of concept!Well done to the guy, very clever.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306716",
"author": "haydn",
"timestamp": "2011-01-17T01:05:00",
"content": "record a copy of his speech using a webcam.play it on a monitor in slow motion and copy the lip moments after the intro speech and wink a lot during the speech. Edit the audio and video to re sync, and and not to jitter your head too much (he was almost perfect by the way, hardly any jitter) post you results.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306723",
"author": "strider_mt2k",
"timestamp": "2011-01-17T01:12:40",
"content": "This is sooo…differently abled.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306726",
"author": "Steve",
"timestamp": "2011-01-17T01:14:02",
"content": "If you watch closely I think the video becomes more jerky when he “switches” on the eye electrodes. I am quite confident he is capable of pulling off this sort of visual effect.However I have seen exerciser thingys which are powered off a single button cell and these last for hours. I have also seen dog trainers which can produce ~30mm spark and will run off 2xAAAs (3V same as button cell) so I think the package size is plausible.I just don’t think without further documentation or proof that it is beleivable. If we see it at CES 2012 it would be cool to be proven wrong.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,302.427633
|
||
https://hackaday.com/2011/01/16/20-fuel-injector-tester/
|
$20 Fuel Injector Tester
|
Mike Szczys
|
[
"Tool Hacks",
"Transportation Hacks"
] |
[
"555",
"fuel injector",
"mosfet",
"timer"
] |
[Dino] is an auto mechanic and needed a way to test out fuel injectors. Commercially available tools start well over $100 and go up from there, but
he built his own for about $20
.
The injectors have a coil in them that needs to be tested. His design calls for a series of 0.008 millisecond pulses to test the coil. He started by setting up a 555 timer to output a one second pulse. This signal is fed into a second 555 chip that outputs the 0.008 pulses and in turn actuates a MOSFET to switch the coil on and off. To use it [Dino] connects to a 12V bench supply and to the injector, using a single button to start the test. See him explain the setup in the video after the break.
[youtube=http://www.youtube.com/watch?v=e5Dyr34qd_k&w=470]
| 39
| 39
|
[
{
"comment_id": "306530",
"author": "TheBadWolf",
"timestamp": "2011-01-16T21:16:04",
"content": "This is awesome beyond belief.Loves it",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306532",
"author": "andrew",
"timestamp": "2011-01-16T21:20:50",
"content": "nice job",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306536",
"author": "GoJimi",
"timestamp": "2011-01-16T21:24:27",
"content": "Excellent use of simplicity and cheap components to solve a complicated issue. Love it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306537",
"author": "mrasmus",
"timestamp": "2011-01-16T21:24:34",
"content": "Excellent video, nice design; the clarity of the design is nice, and it serves as a nice demonstration of the mono- and a- stable modes of the 555. I also like his *exceedingly* clear process — from design all the way down to laying out the perfboard prototype, no steps are left unexplained, and all of them demonstrate a strong, clear understanding of the engineering behind them.I particularly appreciated his breakdown of each step of the signal — it’s a great demonstration of how compartmentalization in prototyping and design can prevent puzzling challenges; it’s a skill that so many people getting their starts in electronics lack, so it’s great to teach it along with breadboarding and basic soldering skills. I’ll be keeping this video link as a demo of 555 circuits for friends in the future, for sure.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306543",
"author": "haxorflakes",
"timestamp": "2011-01-16T21:43:16",
"content": "i like the self repair manifesto on the back wall from i-fixit.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306565",
"author": "Peter",
"timestamp": "2011-01-16T22:11:20",
"content": "The pulse width (~6us) seemed a little short for a mechanical device. I find it difficult to believe that a large mechanical relay (or fuel injector) can actually work with a pulse in the us range. The wikipedia page on fuel injectors (http://en.wikipedia.org/wiki/Fuel_injector) (about 3 quarters of the way down) suggests that the correct units would be ms (three orders of magnitude longer).Otherwise, nice hack/tutorial. Can’t agree more about the temp controlled soldering iron– bought a Hakko soldering station 6 months ago after owning a few pencil types over the years. Hands down the best $80 I have ever spent on any tool.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306590",
"author": "Dino",
"timestamp": "2011-01-16T22:30:36",
"content": "You’re right Peter. I did mention the times in the video in milliseconds… OOPS! :) It’s microseconds.Thanks for the comments guys.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306630",
"author": "malikaii",
"timestamp": "2011-01-16T23:13:36",
"content": "Dino, I believe Peter was suggesting it be the other way around. The time should be in milliseconds, not microseconds.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306642",
"author": "Dino",
"timestamp": "2011-01-16T23:33:11",
"content": "Right you are! My brain hurts! lolThanks.It outputs 8 millisecond ON pulses followed by 7 milliseconds OFF for a duration of 1 second so that comes out to a total of 66.6 pulses.Right? :) 8+7=15 which is one cycle 1000/15=66.6",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306660",
"author": "jc",
"timestamp": "2011-01-16T23:49:43",
"content": "May want to add a resistor to the power LED in the schematic (no doubt someone will build it exactly as it is shown). I suspect the LED was added afterwards as I didn’t see it in schematic in the video.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306661",
"author": "jc",
"timestamp": "2011-01-16T23:50:49",
"content": "Oh, and thanks for posting! Very cool circuit.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306680",
"author": "Garreth",
"timestamp": "2011-01-17T00:12:16",
"content": "I really enjoyed your video. Probably I’ll never need such fuel injector tester, however I love the way you described the process of designing and building it. It kept me really interested in the video. I hope you’ll get oscilloscope one day, which would let you make more interesting projects:)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306697",
"author": "malikaii",
"timestamp": "2011-01-17T00:29:55",
"content": "I never thought to use a PCB layout on a protoboard before. That’s genius. I usually end up with jumper wires all over the TOP of the board, instead of it looking like a PCB on the bottom. Great work.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306754",
"author": "Cynyr",
"timestamp": "2011-01-17T02:09:43",
"content": "http://www.dprg.org/tutorials/2005-11a/index.htmlA way to make an adjustable duty cycle PWM generator with a a-stable 555 timer and some bits. Works decently to control the speed of a DC fan.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306759",
"author": "Simon",
"timestamp": "2011-01-17T02:15:02",
"content": "I really appreciated the work and attention to detail that went into this project write-up. Thanks very much Dino!How come the green pulse LED doesn’t burn out when the injector closes? I see a spike of several hundred volts on mine.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306779",
"author": "gcat122",
"timestamp": "2011-01-17T02:41:08",
"content": "I second all the positive comments above. Good process and results. I would caution that the relay and injector will both cause a huge positive voltage spike on the transistor when it shuts off. The 100 volts or more will try and fry the LED and FET. A diode will work but a series diode and resistor or series diode and zener(10volt or so) will allow the field to decay faster and keep the injection timing close to desired values (if critical). Do injectors have these built in?Good work.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306780",
"author": "Daley",
"timestamp": "2011-01-17T02:41:45",
"content": "Kudos Dino – not many mechanics have electronics knowledge, even really good mechanics. As stated, you do a great job of simplifying, explaining, and above all UNDERSTANDING.Whatever you’re making as a mechanic doesn’t do you justice.Hat’s off!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306783",
"author": "gcat122",
"timestamp": "2011-01-17T02:56:53",
"content": "To clarify, point the diode to the plus supply. Anode to transistor,cathode to plus supply. The zener in series with the rectifier would point the other way. Another choice is a zener to ground from the top of the transistor. Use 15v or higher zener in this case (higher than the supply voltage), with cathode to the top of the transistor. Check that your transistor voltage rating is higher than the zener voltage plus the supply plus a safety margin.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306824",
"author": "Dino",
"timestamp": "2011-01-17T03:41:48",
"content": "@ JC, good catch on the LED resistor. I corrected that. You’re right, it was added last minute.@ gcat122, the MOSFET has diodes built into it as shown on the schematic. Makes them very easy to use.@ Garreth, After seeing the video, someone has offered to give me a Tektronix 7633 oscilloscope they no longer use! :) How cool is that?!@ Daley, I’m hoping that one day soon someone will see what I can do and offer me a job where I can really earn what I’m worth, and do what I love.Everyone else, thanks for the compliments. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306874",
"author": "gcat122",
"timestamp": "2011-01-17T04:22:00",
"content": "I checked the schematic and noticed a gate protection zener and a non-zener body diode. The IRF510 (from radio shack) has a source to drain zener built in so that would work well. Even then the 100V pulse is potentially bad for the LED and wandering fingers. Borrow a scope or run a free visual simulator at falstad.com. Very enlightening.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306888",
"author": "Fallen",
"timestamp": "2011-01-17T04:45:00",
"content": "Well done Dino, Kudos.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306916",
"author": "Dino",
"timestamp": "2011-01-17T05:27:37",
"content": "Seems I have a bit of troubleshooting to do.I have an injector here I was testing out and it only made one short pulse. I checked the tester again with the relay and it worked as it should.The relay coil winding measures 82 ohms. The injector coil winding measures only 14 ohms. I think the lower ohms on the load side is causing the monostable timer to time out. I’ll have to get in there and check some things out tomorrow.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306952",
"author": "Neolith100",
"timestamp": "2011-01-17T06:05:06",
"content": "Excellent job Dino, great explanation and concise and audible information! Keep it up.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307022",
"author": "Eric",
"timestamp": "2011-01-17T07:54:47",
"content": "Very interesting project here. There are low impedance and high impedance injectors, which it seems you have ran in to. Are you going to add a way to switch between them?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307275",
"author": "fartface",
"timestamp": "2011-01-17T13:54:16",
"content": "I just use a signal generator to do that. run the output into a simple transistor circuit to handle the power and all done.Also that is a GOOD way to clean injectors by pumping nothing but injector cleaner through them. You also can balance a set of injectors by running for a set time and measure the amount passed on each. then pic the set of injectors that pass close to the same amount. Voila; a super expensive set of matched injectors for peanuts.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307329",
"author": "OpCode1300",
"timestamp": "2011-01-17T15:20:40",
"content": "nice build. just one note..There are two basic types of injectors. Low impedance(high current, 4-7A) injectors with a resistance of around 2.5-3 ohms, and high impedance(low current, 1A) injectors of around 12 ohms.worth a note.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307448",
"author": "Jake",
"timestamp": "2011-01-17T18:00:31",
"content": "Hmm. I see that he mentions that flow testing is the only way to properly test the injector (also, you need to observe the spray pattern), but I don’t see him testing any injectors in the video?A better title of this project might be “How to use a 555 timer”. Without a self-constructed flow testing apparatus, this is nothing more than a 555 timer circuit, which can be found in any 555 datasheet.I’d like to see a write-up on his build of the flow tester. I built one with a cheap aftermarket fuel pump, pressure regulator, and mechanical guages. It works well, and I just use an old HP function generator to actuate the injectors – I thought that was an easy way to give me the freedom to dial in whatever frequency, duty cycle and duration I wanted, and I got it for $40 on good ol’ eBay :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307498",
"author": "Dino",
"timestamp": "2011-01-17T18:48:12",
"content": "@ Jake My intent here was to build a device to trigger the injector in the car with a fuel pressure gauge connected and static pressure applied. You then observe the pressure drop and repeat the process on the other injectors. If one has a low or high flow, the difference will be seen in the pressure drop.Good idea using a function generator for your setup. :)I may build a flow tester one day, but this is a tool that auto techs can use now, and they can use my plans and build it cheap if they are so inclined. Units like this one are commercially available and look very much like the one I made.I solved the problem I was running into with that 14 ohm injector. I’ve added a 47 mF capacitor between the power supply inputs. Now it pulses for a full second as it should. The schematic has been updated.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307529",
"author": "zeropointmodule",
"timestamp": "2011-01-17T19:01:49",
"content": "you know what the next project is going to be,Recycled fuel injector based printer :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307680",
"author": "SparkyGSX",
"timestamp": "2011-01-17T21:48:21",
"content": "Zener diodes are way to slow for such applications, unless you bias them first with a resistor, which limits the zener diode to a value less than the supply voltage.The “build-in” diode of a MOSFET is usually also very slow, and besides that, it’s in the wrong place. The current in the inductor doesn’t change instantly, so a fast diode should be placed such the it will conduct this current.The way the circuit is now, the MOSFET probably goes into avalanche breakdown every time it switches off, which can be acceptable if it is properly avalanche rated, and you make sure you keep the avalanche energy wel below the limits.I’d add a little resistor or inductor in series with the injector, to protect the MOSFET in case of a shorted injector. A separate power supply (diode in serie with a buffer capacitor) would be good for the 555’s, along with power supply decoupling capacitors (about 100nF) to prevent erradicate behaviour long supply cables (stray inductance), or a supply that will sag a little when the MOSFET turns on.Also, an under-voltage protection on the reset pin of one of the 555 timers would keep the circuit from working if the supply voltage is to low, which could destroy the MOSFET because it’s not fully turned on by the lower gate-source voltage.Finally, a small resistor (in the range of 2-20 ohms) in series with the gate would help dampen the (very likely!) gate ringing, which is also bad for the reliability of the MOSFET.A (large) diode in series with the power supply will prevent damage in case the supply leads are reversed, which could destroy the 555 timers, and the MOSFET (and quite possibly the injector) because a large current would flow through the body diode and the injector.There are just a few small extra components, which should make the circuit nearly foolproof.I don’t mean to be negative, it’s a nice effort, but I think it just needs a little more work.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307831",
"author": "Jake",
"timestamp": "2011-01-18T00:10:36",
"content": "@DinoI wouldn’t use static pressure drop to indicate the condition of the injector. It’s nice as a basic troubleshooting test, but it’s not neccesarily a good indicator of injector condition. I’ve seen many an injector with an acceptable flow rate, but a *horrible* spray pattern. I always pull them out of the intake and test them that way.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307854",
"author": "Dino",
"timestamp": "2011-01-18T00:44:48",
"content": "@ JakeThis is intended to be used as a basic troubleshooting tool, NOT to test the overall condition of the Injector. I agree. There’s nothing like a visual inspection of the spray pattern to tell you what’s really going on, and sometimes I pull them and do just that.@ SparkyGSXThanks a lot for the tips. :)Part of the reason for sharing projects is to learn more. I’ll be working on putting your suggestions to work.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308762",
"author": "bluewraith",
"timestamp": "2011-01-19T03:36:49",
"content": "I used to throw wrenchs around too.. but none of that matters to me. What I LOVE about this project is the attention to detail on the perfboard. I would have never thought to use a PCB editor to lay out something like that. That is definitely going to get some thought in my next project.A clean breadboard is a happy breadboard, but sometimes ya just need a bit of wire-porn to make it through the day.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "386718",
"author": "rider",
"timestamp": "2011-04-27T07:51:11",
"content": "Hello..I tried out your circuit.First i used the LED and it worked well.But i’m having trouble with the mosfet driver.It doesn’t seem to drive my 14-ohms injector. I dint hear any clicks or whatsoever.Any suggestions on the mosfets?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "699453",
"author": "zachiepb",
"timestamp": "2012-07-10T20:37:32",
"content": "So I know this is a little old, but if my math is correct this moves the injector as if an engine is operating at 20000 RPM? I am not good with changing circuits, just copying others. is there any way to slow it down to a normal level?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "2464324",
"author": "richpo",
"timestamp": "2015-03-04T22:03:12",
"content": "I actually built one and it works great. It’s always in my tools with all my important tools. I’ve used it on several cars and it works great. Nice design Dino.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "2689300",
"author": "ALFREDO TEXACA",
"timestamp": "2015-08-25T10:02:01",
"content": "Interesting.. could this circuit be modified and installed in a vehicle to increase the pulse width signal sent to the injector, so that it could mimic a Flex Fuel conversion kit.? Sort of a Poor-man’s version of a E85 conversion kit. You could use one for every cylinder… Food for Thought?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "3110337",
"author": "Daniel Armstrong",
"timestamp": "2016-07-31T15:46:23",
"content": "Really neat i wanted to make something similar to this as i to am a mechanic by trade and i get spare fuel injectors and i like the details of how things work, nice video, i used to be in to digital electronics and my first project was a flashing led with the 555ic timer when i was in 9th grade. Like the way he mocked it up before actually making it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6395493",
"author": "Thomas Reuland",
"timestamp": "2021-10-31T09:32:02",
"content": "Dino I highly recommend you purchase an Oscilloscope. Great circuit layout. Very descriptive and easy to understand. I’m a former automotive technician. Also electronic technician. Keep up the good work.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,302.121766
|
||
https://hackaday.com/2011/01/14/atomic-pinball-clock/
|
Atomic Pinball Clock
|
Mike Szczys
|
[
"clock hacks"
] |
[
"arduino",
"atomic clock",
"electromechanical",
"optoisolation",
"pinball",
"wwvb"
] |
[Mark Gibson] sent us a load of details on his build,
a WWVB atomic clock using a pinball machine marquee
(PDF). This is the upright portion of an old machine that used electromechanical displays instead of digital electronics. It’s big, noisy, and seeing it running might make you a bit giddy. Luckily he included video that shows it working on both the outside and the inside.
It took a bit of probing to discover the connections for relays that control the display. From there he used optoisolation to drive them with an Arduino. With this hurdle behind him, [Mark] set out to add atomic clock accuracy. He picked up a WWVB module and added it to the mix.
Check out his build log in PDF form linked above. He went out of his way to explain how the original parts work, and the processes he used during prototyping. For more of those juicy details we’ve added a photo gallery and his video after the break.
Didn’t get enough pinball goodness from this project? Check out the this
digital gas plasma display
pulled and reused from a much more modern pinball machine. Oh, and there’s always
Bill Paxton Pinball
.
[youtube=http://www.youtube.com/watch?v=0hFOIy-oxUw&w=470]
| 14
| 14
|
[
{
"comment_id": "304732",
"author": "Josh",
"timestamp": "2011-01-14T21:05:37",
"content": "This is really cool, these types of things are why I come to HaD. Keep up the good work guys.Oh btw… FIRST",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304737",
"author": "strider_mt2k",
"timestamp": "2011-01-14T21:15:20",
"content": "SOOOOO COOL!Seriously well done!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304743",
"author": "vonskippy",
"timestamp": "2011-01-14T21:25:15",
"content": "Neat.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304759",
"author": "KBDisneyFan",
"timestamp": "2011-01-14T21:49:57",
"content": "Outstanding. I wish I would have kept the old machine I had. Way Cool!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304764",
"author": "Jac Goudsmit",
"timestamp": "2011-01-14T21:54:56",
"content": "The PDF starts with “I’m not much of a hacker, I’m more of a hacker wannabe”. Sir, I take my hat off to you and and take a deep bow. You are too modest.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304766",
"author": "Hirudinea",
"timestamp": "2011-01-14T21:57:44",
"content": "I think I just got a boner!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304857",
"author": "tulcod",
"timestamp": "2011-01-15T00:25:04",
"content": "though technically this is not an atomic clock, it just receives time via radio signals…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304971",
"author": "bluewraith",
"timestamp": "2011-01-15T04:13:57",
"content": "Very nicely done. I’m still searching for my “big project” to work on, but in the meantime I’ve been keeping myself busy with small things.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305249",
"author": "prem",
"timestamp": "2011-01-15T11:42:25",
"content": "wow, that was truely badass.amazing work and a highly detailed build log.im still going through it now..these are the types of posts we need to see more of.bad. ass.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305320",
"author": "MS3FGX",
"timestamp": "2011-01-15T14:39:49",
"content": "Outstanding. I agree with the other commenters, this is the kind of post we want to see more of.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305413",
"author": "Agent420",
"timestamp": "2011-01-15T17:14:49",
"content": "LOL… The thing I love about the internet is that every time I think I’m the only one with a wierd idea, I find I’m not alone.I’ve got a couple of old EM pins and actually built a similar clock years ago, though mine was housed in a smaller case with photoshopped artwork rather than the original backboard. I also used the solenoid chimes to strike the hour.In any event, yours is a cool project done very well… congrats.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305416",
"author": "Agent420",
"timestamp": "2011-01-15T17:16:43",
"content": "Btw… 2 things I can never get enough of – strange clocks and unique display devices.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305622",
"author": "Mark Gibson",
"timestamp": "2011-01-15T20:55:37",
"content": "Wow. Thanks everyone for the comments. I really appreciate them.I don’t want to leave anyone with the impression that I came up with this all on my own. I can’t really pinpoint how my ideas evolved, but I have to credit two sites I had seen sometime earlier: Crow River Trading’s clockhttp://www.crowriver.com/clock/index.htmand this WWVB receiver hackhttp://hackaday.com/2008/07/15/scavenging-a-wwvb-module-from-an-rc-clock/./Mark Gibson",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306786",
"author": "Marks",
"timestamp": "2011-01-17T03:03:26",
"content": "This pinball is also known as Miss-O.“The original name for this game was ‘Miss Q’ (a play on the billiards term ‘mis-cue’) but Williams learned the French translation of that was sexually derogatory, so they had to quickly alter the name. It is believed this change occurred before production started.”http://www.ipdb.org/machine.cgi?gid=611",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,302.259858
|
||
https://hackaday.com/2011/01/14/theory-behind-evanescent-wave-coupling-aka-wireless-power/
|
Theory Behind Evanescent Wave Coupling, Aka Wireless Power
|
Mike Szczys
|
[
"Misc Hacks"
] |
[
"evanescent wave coupling",
"inductance",
"persistence of vision",
"wireless electricity"
] |
[Alan Yates] is building a persistence of vision display and needs a way to transfer power from the stationary base to the spinning circuitry. He’s decided to go with wireless energy transfer and he’s sharing
all of his research and experiment data from the development process
. It comes in two forms, the written version we just linked to, and a 37 minute video which is embedded after the break. If you liked some of the
inductive energy transmission devices
we’ve featured in the past, [Alan’s] video will fill you in on the why’s and how’s by using a combination of illustrative schematic examples and measurements on test coils that he built.
[youtube=http://www.youtube.com/watch?v=r1UT4NuygmQ&w=470]
[via
Hacked Gadgets
and
EEVblog
]
| 30
| 30
|
[
{
"comment_id": "304636",
"author": "Fallen",
"timestamp": "2011-01-14T18:19:55",
"content": "hmm new term for me, evanescent. Well at least new when applied to electronics.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304653",
"author": "jenningsthecat",
"timestamp": "2011-01-14T18:44:56",
"content": "Those experimenting with this technology need to keep an important consideration in mind. The energy being dealt with is magnetic in nature; unlike radio waves, (whose intensity falls off as the inverse of the square of the distance), the field intensity here declines as the inverse of the CUBE of the distance. So, as an example, doubling the distance between transmitter and receiver necessitates transmitting 8 times as much power to obtain the same amount of received power. For this reason, power transmission over long distances is problematic. Just something to keep in mind…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304662",
"author": "Drew",
"timestamp": "2011-01-14T19:01:38",
"content": "Evenescence – It’s not just an angsty alternative rock band anymore.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304665",
"author": "Jake",
"timestamp": "2011-01-14T19:05:57",
"content": "The title of his page should read “My geeky hobbies and I”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304672",
"author": "tulcod",
"timestamp": "2011-01-14T19:15:19",
"content": "@Alan Yates:in your particular setup, you already had movement. why didn’t you just put magnets on the static side and make the rotating disk something like a dynamo, but “inversed”?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304681",
"author": "Zengar",
"timestamp": "2011-01-14T19:38:42",
"content": "I’ve been meaning to do one of these setups for my wireless mouse. I mean, I bought the thing because the cord on my previous mouse picked up an intermittent short, not because I wanted to be able to use if across the room from my computer. Should be able to get good efficiency going through just the thickness of the mousepad and the plastic shell.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304689",
"author": "inthefrey",
"timestamp": "2011-01-14T19:47:09",
"content": "Wow! Very Interesting!This is an episode of Tha AvengersThe Positive Negative Man (22) 1967A scientist is blown through a wall by a man directing high voltage electricity through a metal tip on his finger and the contents of his safe are fried beyond recognition. Steed and Emma discover that the destroyed documents related to an abandoned scheme to develop broadcastable electricity, but when they contact the other scientists involved in the project, they soon begin suffering similar fates. Throughout The Avengers you’ll find science fiction proposals that seemed far-fetched at the time but which later came to some sort of fruition, and scriptwriter Tony Williamson’s proposal for broadcastable electricity must have seemed a particularly unlikely candidate back in 1967, despite being proposed as long ago as 1905 by Serbian inventor Nikola Telsa (a name that should be familiar to all Fallout 3 fans). Yet just last year Eric Giler demonstrated his company’s first successful experiments with – you’ve guessed it – wireless electricity, so I’d keep your eyes peeled for a man in heavy make-up with a metal tip on his intex finger. An involving mixture of intrigue, espionage thriller and science-fiction, in which man-shaped holes in walls and windows remind us of series 5’s comic book influence, and rubber soles and galoshes prove to be the world’s safest footwear.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304692",
"author": "Mikey",
"timestamp": "2011-01-14T19:57:04",
"content": "@tulcod I had the same thought… you’ve already got circular motion — why not just use a dynamo? I might build something like that… hmmm.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304695",
"author": "ledstart",
"timestamp": "2011-01-14T20:00:05",
"content": "I think it is stupid. Ever seen a transformer? That is what it is. No reason to ask questions about it, it has a technical history of more than a century. This is the same crap as unit energy engines, and it has no use whatsoever. First you expose yourself to varying magnetic fields that screw up your DNA and nervous system, second, it is wastefull.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304697",
"author": "Smoker_Dave",
"timestamp": "2011-01-14T20:03:11",
"content": "I spent a lot of time working on this myself in the past. It is the basis for LF RFID communications.I made a 125kHz square wave generator and fed it into a 125kHz resonant circuit, the inductor was a coil that also acts as antenna.The “tag” part of the circuit was also just a coil and capacitor tuned to resonate at 125kHz. It was possible to use a diode to half wave rectify the tag and use the transferred energy to light an LED.By shorting out the inductor on the tag side (I was just using a push button), you could modulate the amplitude of the resonating voltage on the transmitter side. An envelope detector can be used to detect the push button being pressed.I had planned to make an oscillator in the tag side which would modulate the transmitter side on its own (emulating the push button but at regular pulses). This could have then been used as a tuned / coded sensor.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304702",
"author": "smaddox",
"timestamp": "2011-01-14T20:10:54",
"content": "My guess on why to use wireless power transmission as apposed to generating power from the rotation:The frequency is much higher for wireless power transmission, thus a much more compact capacitor can be used to smooth the current.Also, using wireless power transmission, the rotation speed of the POV device can be changed without changes to the circuit.Also, it’s more interesting.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304738",
"author": "Taylor Alexander",
"timestamp": "2011-01-14T21:16:10",
"content": "This looks cool. I bought the Qi wireless power dev kit from Texas Instruments last week, and it has what seems to me to be an absurdly complicated circuit. Lots and lots of components, to the point where using it might double the part count on one of our boards. I don’t know if all that is necessary as I haven’t gone over the datasheet yet, but I sure hope the chip doesn’t need all those components! Clearly it wouldn’t have to.-Taylor",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304741",
"author": "zeropointmodule",
"timestamp": "2011-01-14T21:20:29",
"content": "a few people on 4HV are working on this, take a look :)the decay with distance effect can be somewhat mitigated by additional tuned resonators between the transmitter and receiver.Still doesen’t solve the underlying problem but it can somewhat improve efficiency.Interestingly a microwave collimator based on metamaterials might allow longer distances, the basic structure of these is relatively simple.(works with cantennas too!)-ZPM",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304744",
"author": "John",
"timestamp": "2011-01-14T21:26:31",
"content": "A transformer _is_ wireless energy transmission. Just with a much better medium than air.Using a generator is a terrible idea. It would be hugely annoying to try and regulate the voltage at the spinning end, since the EMF would depend on the rotation speed. Not to mention, if the load varied (say, an LED turns off) it changes the back EMF, which means that the resisting force on whatever’s driving the spinning bit changes.That is to say, the LED turns on, and the thing would spin slower. Might screw up the effect.He could improve efficiency by adding an iron core through the two sets of coils, but it’s probably not worth it.While I doubt that he’ll keep it long enough for this to be an issue, using an inductive power system is the most reliable, longest lasting solution. Contacts wear out, and batteries die, but those coils will last pretty much forever.ledstart, I hope you never walk near a microwave! or a fluorescent light, or a computer, or a power line or a radio station or an electric radiator.. so on and so forth.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304771",
"author": "alfcoder",
"timestamp": "2011-01-14T22:09:49",
"content": "or you can use something like this:http://www.youtube.com/watch?v=TIhPayFBE9c",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304821",
"author": "RandomNut",
"timestamp": "2011-01-14T23:18:20",
"content": "Evanescent wave coupling is a optical technique where standing light waves are used to excite florescent probes without directly illuminating the whole sample.Wiki linkhttp://en.wikipedia.org/wiki/Total_internal_reflection_fluorescence_microscope",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304825",
"author": "Link",
"timestamp": "2011-01-14T23:27:12",
"content": "Alan you are an amazing teacher. Thanks for making this awesome project log and resource!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304833",
"author": "ledstart",
"timestamp": "2011-01-14T23:36:25",
"content": "There is a difference between RF and ‘wireless’ transmission, because RF is Electro magentic waves, while ‘wireless’ uses a varying magnetic field.I just think that if you take your basic physics textbook you can exactly predict what your coils will do, nothing to it, it has limited potential (can be calculated) and it is a waste of smart minds imho.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304859",
"author": "MrX",
"timestamp": "2011-01-15T00:32:13",
"content": "@LinkI thought the same.. Thanks for the lesson Alan :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304914",
"author": "blue carbuncle",
"timestamp": "2011-01-15T01:43:31",
"content": "@ledstart I thought I was missing something. I guess they rip the inductance chapters out nowadays while standing on their desks shouting “Oh Captain My Captain” or some such. I think it had to be repackaged and re-termed for to avoid patent payment on a number of similar methods of power transfer. Powermat might not make so much if they had to use 13 pre-ordained patents. My two cents…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305403",
"author": "eresonance",
"timestamp": "2011-01-15T16:50:48",
"content": "@ledstart and blue carbuncleBefore you two get all in a tizzy about this I should inform you that these two phenomena (transformers and what’s going on here), while related, are not quite the same. A transformer is not using resonant effects to induce a current in the secondary, where this is. Seehttps://secure.wikimedia.org/wikipedia/en/wiki/Resonant_inductive_couplingfor more info on this method. You can actually find resonant transformers in the high-voltage power supplies used for cold cathode tubes in the back of LCD screens :)I messed around with this a while ago as well, and ended up building a device that works pretty good. Again, nothing new from what the submitted article contains, but worth checking out if you are interested:http://www.instructables.com/id/Low-Power-Wireless-Charging/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305405",
"author": "pilotneko",
"timestamp": "2011-01-15T16:52:25",
"content": "@RandomNut Yeah, I’m glad someone mentioned this. While an evanescent wave is not used specifically to study fluorescent particles, that is one of it’s more common uses. An evanescent wave is a projection of the electric field into a medium that arises opposite the point an intense optical wave experiencing total internal reflection. The title of this article is crazy wrong, and probably just chosen because “it sounds cool.”However, this hack is very nice. Keep up the good work, just watch the terms you sling around.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305558",
"author": "DarkFader",
"timestamp": "2011-01-15T20:06:13",
"content": "hmm.. the symbol for voltage should be U not V.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305653",
"author": "Addison Wynn",
"timestamp": "2011-01-15T22:07:24",
"content": "Be careful. Tesla tried something like this and they burned his lab down.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305867",
"author": "Paul",
"timestamp": "2011-01-16T02:32:27",
"content": "I’m confused with all the random hostility and declarations of “oh this is useless”. Someone is trying to illustrate an interesting project and explain some basic physics. What is useless about that?Why don’t you folks go back to making movies about your cat or whatever it is you do other than crapping all over someone’s work.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306012",
"author": "medwardl",
"timestamp": "2011-01-16T06:48:30",
"content": "My back stimulator implant charges by the same method. Actually i have a question posted about it in the question section.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306299",
"author": "blue carbuncle",
"timestamp": "2011-01-16T15:36:34",
"content": "@eresonance thanks for the link :) That cleared it up a good bit. I thought everyone was going crazy since we have all of these tech folks that have built power supplies and have “rang out” cat5 at one or more times during our lives lol. The resonance I understand from building synths and from audio but it seems to lose me in between the “this is what audio does and this is what the power does” in resonance. Guess I’ll do some more reading :) I use a VERY simple circuit that I have written about on here before that just snacks on any radio signal it finds. Actually it is a very simple circuit replicated 300 times lol so it is a little bulky to fit inside of a mouse lol.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307588",
"author": "Ben Wright",
"timestamp": "2011-01-17T20:09:05",
"content": "It was a good video, but he only managed a couple watts over a short distance. Sony had a press release below about a wireless power transfer of 60w for a distance of 19in. I know Sony had a little more money to throw at the ideal, but I’m all for wireless power transfer if you can get it working. Good luck on the experiments.http://www.sony.net/SonyInfo/News/Press/200910/09-119E/index.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "311752",
"author": "chain_smoker_akil",
"timestamp": "2011-01-22T11:15:46",
"content": "the guy is just using basic electromagnetics laws,it is used at many places in differnt applications,it cant be used for wireless electricity.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "382257",
"author": "Xiaodong",
"timestamp": "2011-04-18T13:40:27",
"content": "If the receiver is 1/4 wavelength away from the source. The EMF feedback from the receiver to the source is phase inverted due to the retardation. In this case, the source doesn’t output energy but absorb energy. The system becomes an energy multiplier. It can be used to generate green energy for the world.http://www.vixra.org/pdf/1104.0052v1.pdf",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,302.503409
|
||
https://hackaday.com/2011/01/14/macintosh-pro-dj-helmet-with-an-ipad/
|
Macintosh Plus DJ Helmet With An IPad
|
James Munns
|
[
"Video Hacks",
"Wearable Hacks"
] |
[
"helmet",
"ipad"
] |
Elaborate helmets are not a new concept, with many famous artists such as Daft Punk and Deadmau5 using them for stage shows. For a sculpture class, [Terrence]
fashioned his own
out of the body of a Macintosh Plus and an iPad conveniently sourced from eBay. After gutting the insides, the Mac Plus was fitted with parts from a helmet both for comfort as well as for keeping the whole setup head mounted. For additional eye candy, an LED visualizer was affixed below the iPad display. The rig is remotely controlled by a bluetooth keyboard, just for good measure. We think this setup easily stands up to other Daft Punk-esque style
head mounts
.
Be sure not to miss the video of the helmet featuring DJ Chameleon (a friend of [Terrence]) in action, as well as a number of other photos.
[Edit: Thanks to everyone who caught the Mac Plus/Pro error!]
| 39
| 38
|
[
{
"comment_id": "304556",
"author": "Steve",
"timestamp": "2011-01-14T16:16:02",
"content": "That’s a Plus, it says so right in the project page. There is no such thing as a “Macintosh Pro” in that vintage. (The mac Pro came much, much later.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304563",
"author": "TReid",
"timestamp": "2011-01-14T16:25:52",
"content": "I have a friend who did something similar this Halloween, but used an old Zenith TV set and a salvaged laptop monitor. The screen displayed whatever was seen through his head-mounted webcam.http://tinyurl.com/4ay7t76http://tinyurl.com/4ozuyf4Feel free to shoot him any questions here:http://www.facebook.com/kevin.lynk",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304566",
"author": "sam",
"timestamp": "2011-01-14T16:35:49",
"content": "how does he see out of it?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "304699",
"author": "Terrence",
"timestamp": "2011-01-14T20:03:54",
"content": "The floppy drive hole and the vents in the bottom.",
"parent_id": "304566",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "304575",
"author": "Aylwin",
"timestamp": "2011-01-14T16:41:32",
"content": "I think you might mean Macintosh Plus.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304576",
"author": "James Milne",
"timestamp": "2011-01-14T16:44:31",
"content": "I think you’ll find that’s a Mac Plus, not a Mac Pro",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304588",
"author": "nukky",
"timestamp": "2011-01-14T16:59:12",
"content": "cxn to summary: Body of a Mac Plus, not a Mac Pro ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304589",
"author": "DrWebster",
"timestamp": "2011-01-14T16:59:46",
"content": "I think you mean “Mac Plus”, not Mac Pro. A Mac Pro would be just a bit too bulky to wear as a helmet ;-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304595",
"author": "Mister Redundant",
"timestamp": "2011-01-14T17:10:54",
"content": "Hey guys, I don’t know if you know, but thats totally a Mac Plus, not a Mac Pro! I know everything about computers! I definitely did not read the previous 5 comments that said the exact same thing this comment does!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304599",
"author": "James Munns",
"timestamp": "2011-01-14T17:16:59",
"content": "Thanks to everyone who caught the Mac Plus/Pro Error, its been updated.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304610",
"author": "Amos",
"timestamp": "2011-01-14T17:23:06",
"content": "1) It’s called an “LED” visualizer by the author, but it’s probably an electroluminescent display. They also put them in T-shirts.2) Does anyone actually read the comments before posting one, fercryinoutloud?! WE KNOW IT’S A MAC PLUS, KTHXBYE!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304613",
"author": "JC",
"timestamp": "2011-01-14T17:33:45",
"content": "@sam – Yeah seriously how does one see out of it? Or the Daft Punk helmets for that matter.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304618",
"author": "osgeld",
"timestamp": "2011-01-14T17:45:30",
"content": "I hope he didnt kill a functional machine, not that I am greif stricken over it but I do like me retro computersand if anyone has any bright idea’s I have a performa 200 (classic II) bucket sitting in my trunk and its well beyond repair",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304625",
"author": "Alpha",
"timestamp": "2011-01-14T18:01:26",
"content": "Everyone loves a gimmick.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304627",
"author": "xeracy",
"timestamp": "2011-01-14T18:04:31",
"content": "ROFL. just read in that article that my buddy (DJ Chris Patrick) is DJing there tonight. I’m definitely going now. Anyone else?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304632",
"author": "Grovenstien",
"timestamp": "2011-01-14T18:14:44",
"content": "A well polished stage entrance, not to stressed, no technological mishaps, great poise, feeling self conscious… Not much!!!Nice hack!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304673",
"author": "humm",
"timestamp": "2011-01-14T19:22:38",
"content": "guys… im not sure but i have this strange feeling that the computer case is from a mac plus",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304698",
"author": "gregman_1",
"timestamp": "2011-01-14T20:03:53",
"content": "@ those wondering about vision:my guess (from looking at the height of the helmet bucket) is that he can sorta see out of the floppy slot. Probably not real well, and with only one eye, but it doesn’t take much vision to run a sampler and mixer once you’ve been using them for a while. Think of the hair band guitarists who played the guitar behind their head. It’s all about muscle memory.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304716",
"author": "Ferm",
"timestamp": "2011-01-14T20:37:16",
"content": "Neat helmet but it really irks me to see wannabe DJs pretending to be doing important things on their laptop while they’re really just playing someone else’s music from a playlist or just triggering in ableton.It would have been cooler if he had just walked around the party in character or had some kind of act.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304720",
"author": "Ferm",
"timestamp": "2011-01-14T20:39:48",
"content": "I watched it again and maybe he is remixing live but how he can see out of the helmet is still beyond me.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304727",
"author": "Matt (Kid Chameleon)",
"timestamp": "2011-01-14T20:58:18",
"content": "Hey guys! That’s my helmet up there! For those who were wondering, you can slightly see out of the floppy drive, but the majority of the time I was looking out of the vents that aren’t visible because they are on the bottom of the body of the Mac Plus. I had little trouble seeing after I figured out how to get my glasses in the helmet… however, hearing my mix was difficult. We are planning on installing speakers within the helmet soon, as well as fans and some more flashing lights and stuff.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304728",
"author": "Matt (Kid Chameleon)",
"timestamp": "2011-01-14T21:00:53",
"content": "Oh, and Ferm, the second song after Genesis in the video on our website is an original track. Watch the video, I am not simply playing music off of a playlist… I am djing on the fly and I put as much effort into my mix as I did into the visuals and the helmet. People need to stop being so cynical..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304778",
"author": "Niru",
"timestamp": "2011-01-14T22:16:22",
"content": "Daft Punk? Deadmau5?Try: The Residents, like in 1969. Thank you.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304828",
"author": "walt",
"timestamp": "2011-01-14T23:31:07",
"content": "“I am not simply playing music off of a playlist… I am djing on the fly”what’s the difference? if you made the song earlier and simply queued it up it at the club, along with other people’s music, isn’t that still playing music off the playlist?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304842",
"author": "osgeld",
"timestamp": "2011-01-14T23:53:00",
"content": "its made up on the spot live using pre-recorded clips and samples",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304845",
"author": "xeracy",
"timestamp": "2011-01-15T00:09:35",
"content": "aaaannd… GIZMODO’D.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304855",
"author": "xeracy",
"timestamp": "2011-01-15T00:22:31",
"content": "@walt – with the advent of software like Abelton and Reason, there’s no need to make full pre-recorded tracks to play live. instead, DJs/producers establish a repertoire of drum loops/breaks, clips, samples, and full songs that can be mixed and mashed live. Look into ‘controllerism’, and check out Moldover’s videos on youtube. He’s a bit of am extreme case, but its the direction a lot of DJs are going because technology isn’t just two turn tables any more. You will see DJs playing more and more one-of-a-kind sets in the future, and its blurring the line between being a DJ and a live composer.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304922",
"author": "Matt (Kid Chameleon)",
"timestamp": "2011-01-15T02:20:35",
"content": "Xeracy has got the idea! …and yes, stoked on the ‘modo post!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304934",
"author": "Erik Johnson",
"timestamp": "2011-01-15T02:51:22",
"content": "@xeracy Moldover? Haha I didn’t know he was so eFamous I’ve run into him a few times at local festivals but never while he was DJ’ing",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304972",
"author": "jim",
"timestamp": "2011-01-15T04:16:34",
"content": "ugh",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305234",
"author": "prem",
"timestamp": "2011-01-15T11:21:04",
"content": "mixed and mashed up live?triggering bpm sync’d samples/breaks/tracks in ableton or similar is a far cry from actually mixing.when the software is automatically matching the beats for you, you’re basically glorified playlist at best.anyone with a guitar in their hands can be told which string to pluck and which fret to hold but the skill comes from playing those sounds in time..so i ask, what are you actually doing?the helmet is a nice school project although im not sure that emptying out a case, putting an ipad in it and then sticking it on your head constitutes a hackaday post.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305458",
"author": "wernicke",
"timestamp": "2011-01-15T17:53:31",
"content": "@NiruI’m glad I’m not the only one here old enough to have the Residents come to mind before Daft Punk. Unfortunately, the only time I saw them live, they didn’t have their eyeballs on.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305516",
"author": "prem",
"timestamp": "2011-01-15T18:51:29",
"content": "@wernickecoincidentally, i picked this up yesterday:http://i.imgur.com/pCjdr.jpg",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305900",
"author": "cb88",
"timestamp": "2011-01-16T03:44:34",
"content": "heh that bpm automagically makes me thing “hung up” for some reason X.xcool idea I’m not much for that music though lol",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306013",
"author": "medwardl",
"timestamp": "2011-01-16T06:49:32",
"content": "It’s neat but i just don’t like apple.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306081",
"author": "walt",
"timestamp": "2011-01-16T09:06:44",
"content": "@xeracy if drum machines and synthesizers aren’t present, it’s not live! young college kids are the only ones who don’t understand that yet. controllerism is lame. at best, it’s a new way of being a hardcore DJ. Moldover is the only guy doing controllerism in a respectable way and that way should be the standard, if you absolutely must take the controllerism rout. in the end, if you’re playing mix and mash, you’ll have a hell of a time getting signed as a musician… because you’re just a D.J.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306113",
"author": "Osgeld",
"timestamp": "2011-01-16T09:56:01",
"content": "as 99% of your favorite musicians (that happen to still be alive) midi every single thing so they dont dare screw up that 1 song in their elderly years… please be real (I know, its what I do for a living)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306358",
"author": "p3ngwin",
"timestamp": "2011-01-16T17:37:52",
"content": "after the Genesis intro, what’s that first breakbeat track ?the one *before* Kid’s original “RAMPAGE” music track.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307552",
"author": "xeracy",
"timestamp": "2011-01-17T19:39:42",
"content": "@Erik Johnson – saw him play at MakerFaire last year. didnt know who he was till a month later when i ran across his site and controllerism. I now wish i had gotten to talk to him for a few minutes.@walt – I agree that the quantization ability of reason and abelton does dilute the authenticity of music production, however I guess the syntactically correct term for what moldover does (and others to some extent) would be live composing. He isn’t playing the instruments, he is choosing when they play their parts, and making those decisions in real time. While that may not take the skill of a concert violinist, it still takes more talent and musical understanding than then half-wit with a SYNC button.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,302.332762
|
||
https://hackaday.com/2011/01/14/open-source-your-rave-with-openlase/
|
Open Source Your Rave With OpenLase
|
James Munns
|
[
"digital audio hacks",
"Video Hacks"
] |
[
"jack",
"laser",
"linux",
"openlase",
"projector",
"ubuntu"
] |
Without a doubt, Laser Projectors are a great way to project large, bright images on any surface you can imagine. With a high enough quality projector and software package, excellent images and visualizations can be displayed in real time. [marcan], of the openkinect project, decided that there were not any open source laser projection packages out there that suited his wants or needs, so logically he decided to
write his own
. Because
home-made
laser projectors often use the audio out port of a PC, building the framework on top of the JACK unix sound software to control the hardware made perfect sense. OpenLase includes plugins for audio visualizations, 2D and 3D gaming, as well as converting video streams into laser format in real time.
Be sure to check out the
Chaos Communication Congress
presentation [marcan] gave after the break, as well as all the extra demo videos on his website.
[youtube =
http://www.youtube.com/watch?v=yEG68O6jpjo&w=470%5D
| 26
| 23
|
[
{
"comment_id": "304497",
"author": "Grovenstien",
"timestamp": "2011-01-14T14:45:11",
"content": "Perhaps it would be possible to hijack an ILDA interface and use a DAC to do the same thing for non homebrew lasers. There are loads of cheap Galvo sets with ILDA boards on ebay. Currently Pangolin seem to have the market share of Laser control software and hard ware. More freeware of dev kits our great, if only i could hack code as well as i hack my thumb with my stanley!!!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "304534",
"author": "marcan",
"timestamp": "2011-01-14T15:42:44",
"content": "I actually use a pair of galvos designed for ILDA signal levels directly. Usually ILDA uses differential inputs at larger signal levels. These galvos have an input scale control though, and they work well when you turn that up. I just wired the ( ) input to the soundcard out (with the AC coupling caps bypassed) and fed the mid-supply reference voltage to the (-) input.I believe there are correction amp kits available to produce a proper ILDA signal from a sound card, too. It’s just some basic op-amp circuitry.",
"parent_id": "304497",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "304499",
"author": "Mike",
"timestamp": "2011-01-14T15:02:14",
"content": "Dude so need to play Battlezone on that!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304520",
"author": "elektrophreak",
"timestamp": "2011-01-14T15:11:29",
"content": "wow, what a great project!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304528",
"author": "d",
"timestamp": "2011-01-14T15:36:26",
"content": "Great project. There was less flicker IRL.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304533",
"author": "DeKay",
"timestamp": "2011-01-14T15:38:43",
"content": "Besides openkinect and this, Marcan is also part of failOverflow. He’s at least one level above uberhacker, I’d say.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304537",
"author": "HackerK",
"timestamp": "2011-01-14T15:48:17",
"content": "Beautifully done. Well documented. Kudos!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304564",
"author": "gman",
"timestamp": "2011-01-14T16:31:39",
"content": "vectrex emulation anyone?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304578",
"author": "FoxxCommand",
"timestamp": "2011-01-14T16:45:53",
"content": "Since it uses the audio jack, do you think it would be possible to save the data that would be put out of the audio jack into an mp3 or some sort of audio file and then have it played back from an ipod. It’d be like a portable harddrive with all your laser shows saved onto it, all you’d have to do it take the laser projector with you everywhere.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304583",
"author": "yetihehe",
"timestamp": "2011-01-14T16:55:06",
"content": "Love the music video @2:26.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304586",
"author": "marcan",
"timestamp": "2011-01-14T16:57:34",
"content": "@FoxxCommandYou can do that easily enough (for example, you can run OpenLase and use jackrec to capture the output), but you need a playback device that either is DC coupled (rare) or has been modified to remove the AC coupling caps. Also, you want to use a lossless format like WAV or FLAC; MP3 is a bad idea for non-audio data. And keep in mind that you really, really want at least three channels (X, Y, brightness). Just X and Y leaves retrace/blanking lines all over your image.Honestly though, you aren’t going to get the laser projector much smaller than mine already is (at least not without some serious effort). Using a USB sound card like I do, the easiest solution for portability would be to just run the shows on a netbook. There’s also nothing stopping you from running OpenLase on an even more embedded device; I’m sure it’d run on, say, a Nokia N900 (maybe not the realtime video tracing, but certainly everything else) with the USB soundcard hooked up to it. I have a tiny embedded board with the same CPU on it and Linux+JACK installed, so I’ll probably try it soon.Oh, and for the record, OpenLase runs on OSX too :)",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "663123",
"author": "TW",
"timestamp": "2012-05-30T01:08:24",
"content": "Hi Marcan,I’m just curious why the project needs to be DC coupled. Since you’re using audio frequencies won’t the DC blocking capacitors be a good thing? You won’t get that DC offset over time.Thanks,Sundance",
"parent_id": "304586",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "304638",
"author": "Daid",
"timestamp": "2011-01-14T18:23:14",
"content": "You say you cannot make a laser projector smaller then yours, but I cannot find any pictures of yours :) care to share?And the laser harp is awesome! (http://www.youtube.com/watch?v=iY6927rSBdQ)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304677",
"author": "Mike",
"timestamp": "2011-01-14T19:34:33",
"content": "Problem I’ve had is finding reasonably priced galvos ;p",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304703",
"author": "M4CGYV3R",
"timestamp": "2011-01-14T20:10:54",
"content": "DUDE!That Bad Apple PV video with lasers is just that much more epic. I love this.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304790",
"author": "Taylor Alexander",
"timestamp": "2011-01-14T22:45:40",
"content": "I am extremely interested in an open source laser projector design. If someone shared files to get the parts 3D printed at Ponoko and any PCB files in EAGLE format, I’d totally build one!I haven’t looked much, I always imagined it was too complicated. It’s not? I’m highly skilled, but don’t have *too* much time.-Taylor",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304861",
"author": "Cyberpigue",
"timestamp": "2011-01-15T00:36:16",
"content": "This reminds me of an old viewing device I used to have. It had a tube with an electron gun in it that emitted a beam of electrons that focused on a slightly curved part of the tube (screen) coated with phosphor. When the beam struck the screen it caused the phosphor to convert the energy to photons and light up the screen.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "306143",
"author": "RonProctor",
"timestamp": "2011-01-16T10:19:37",
"content": "LOL – I didn’t know Farnsworth was still alive AND reads Hack-a-Day!?",
"parent_id": "304861",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "304920",
"author": "medwardl",
"timestamp": "2011-01-15T02:17:25",
"content": "Anyone know what that video is from they played toward the end?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305188",
"author": "Dissy",
"timestamp": "2011-01-15T09:59:32",
"content": "@medwardlBad Applehttp://www.youtube.com/watch?v=VzEUeWnV73U",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305327",
"author": "Halexander",
"timestamp": "2011-01-15T14:48:28",
"content": "@medwardlSource:http://www.youtube.com/watch?v=p5CFu5rOvGsYou’re welcome.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305633",
"author": "medwardl",
"timestamp": "2011-01-15T21:42:11",
"content": "thank you",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305863",
"author": "psuedonymous",
"timestamp": "2011-01-16T02:19:52",
"content": "I love that the Bad Apple PV has become a de facto standard test for home made laser projectors.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306017",
"author": "medwardl",
"timestamp": "2011-01-16T06:52:47",
"content": "I’ve been an jpop/anime/manga fan for a very long time I used to have to import it thankfully the internet has greatly increased in speed as has computers so I no longer have to go though that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307556",
"author": "DrZ.",
"timestamp": "2011-01-17T19:49:04",
"content": "That is pretty cool stuff, some really nice full color RT interactive laser stuff going on here:[youtube=http://www.youtube.com/watch?v=2IhZsnQ3zYA&fs=1&hl=en_US][youtube=http://www.youtube.com/watch?v=cpD6atERJ08&fs=1&hl=en_US]",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307562",
"author": "DrZ.",
"timestamp": "2011-01-17T19:50:44",
"content": "And this one too:[youtube=http://www.youtube.com/watch?v=EhoEKCUxEzQ&fs=1&hl=en_US]",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,302.564679
|
||
https://hackaday.com/2011/01/13/kinetic-project-duo-to-delight-and-amuse/
|
Kinetic Project Duo To Delight And Amuse
|
Mike Szczys
|
[
"Toy Hacks"
] |
[
"ball bearing",
"kinetic sculpture",
"perpetual motion",
"steel ball",
"steorn orbo"
] |
We’re going to let you decide which of these two projects is a delight, and which is amusing.
The project on the left is
a desktop kinetic sculpture
. We like it because of its size and simplicity. A single AA battery drives the gear head motor that provides the lift for the metal balls. There are several different routes for them to take in returning to the lift wheel, each route determined by a mechanical combination of the metal spheres. This is more of a month-long build than some of the
other kinetic devices
we’ve seen which could take a lifetime.
The offering on the right is
a perpetual motion machine
. Well, it will be once that guy gets the kinks worked out. You can see him explain how he intends this works in the video after the break. We’re not betting on perpetual motion, but if we did, our money would be on something like
the Steorn Orbo replica
and not on this.
[youtube=http://www.youtube.com/watch?v=40H47Z_eOKE&w=470]
[Thanks Cr8ive]
| 63
| 50
|
[
{
"comment_id": "303738",
"author": "Russ Weeks",
"timestamp": "2011-01-13T22:41:44",
"content": "On a similar note, Ronald Walters’ marble machine via woodgears.ca:http://woodgears.ca/reader/walters/marble_machine.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303741",
"author": "Caspan",
"timestamp": "2011-01-13T22:46:27",
"content": "I love these things, if they work or not!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303759",
"author": "amishx64",
"timestamp": "2011-01-13T23:08:06",
"content": "“GRAVITY WHEEL PERPETUAL MOTION second attempt”http://www.youtube.com/watch?v=X3Iwt84dopM&feature=related",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303762",
"author": "xeracy",
"timestamp": "2011-01-13T23:16:12",
"content": "kinect? i dont see how a kinect plays into– OH KIN-ET-IC! I get it now.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303789",
"author": "brad",
"timestamp": "2011-01-13T23:32:24",
"content": "making the diameter larger is nice and all, but that’s adding to the overall mass of the wheel. doing so would eliminate any mechanical advantage he set out to achieve, even if he cuts holes into the wheel to make it lighter.putting on my foil hat and crossing my fingers.Good luck!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303796",
"author": "jentulman",
"timestamp": "2011-01-13T23:35:50",
"content": "I read kinekt too. There’s been so much of it lately. Not complaining though.You see so much perpetual motion balls on the web, and I think most readers here follow what the issues are around aiming for it.I do however love that people keep aiming for it, even if we get a few ‘monorail salesman’ grabbing cash from the gullible.I really hope that, should somebody break the laws of physics, it’s someone like this, tinkering away in the shed.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303809",
"author": "MrX",
"timestamp": "2011-01-13T23:51:07",
"content": "I would pay to see the moment when he finally realizes that most of the energy in his system is being wasted by friction. :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303833",
"author": "Brian",
"timestamp": "2011-01-14T00:18:07",
"content": "at mrxmost of the energy on earth is wasted by friction, lol",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303834",
"author": "GotNoTime",
"timestamp": "2011-01-14T00:18:49",
"content": "Very nicely made even if the idea of it being a perpetual motion machine or even prototype is a little crazy.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303891",
"author": "Bob",
"timestamp": "2011-01-14T00:59:15",
"content": "Making the outer wheel bigger will cause his the amount of radial travel required to move the ball vertical down to reduce. This will cause the inner wheel to travel less radial which causes the balls to travel less vertically. This will require him to increase the size of the inner wheel…and then the insanity starts over again. Energy in = Energy out – Friction for each cycle. No way to win without adding energy.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303928",
"author": "dmcbeing",
"timestamp": "2011-01-14T01:33:08",
"content": "Someone wasn’t paying attention at physics 101…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303952",
"author": "Brian",
"timestamp": "2011-01-14T01:52:29",
"content": "On a side note, I applaud him for his creations, they all seem very well made and are visually pleasing. They also seem like they required a lot of thought (ignoring the statement about energy and such lol)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303955",
"author": "jeditalian",
"timestamp": "2011-01-14T01:54:17",
"content": "step 1: buy a house by a river.step 2: build a waterwheel.step 3: hook up a driveshaft, do some gearing if you want to increase RPM’s. put some magnets on the output shaft. build a false wall, build a “perpetual motion” machine. put magnets on the side of that, facing your false wall. fill in step 4-? where they belong. you now have a working perpetual motion machine, until the river dries up or your magnets weaken, or the perpetual motion moves out of it’s place, the most likely scenario.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303956",
"author": "theodore",
"timestamp": "2011-01-14T01:55:46",
"content": "And be careful not to lose your marbels!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303958",
"author": "jeditalian",
"timestamp": "2011-01-14T01:57:26",
"content": "the way he builds these makes it easy to fake it with a stream of compressed air.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303969",
"author": "Simon",
"timestamp": "2011-01-14T02:11:37",
"content": "Hack-a-day needs a perpetual motion machine category. Unless you could squeeze it in under “cons” :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303982",
"author": "DudeBro",
"timestamp": "2011-01-14T02:32:10",
"content": "I really don’t understand. This guy seems to think he has achieved something other than building a nice marble thingy. Does he not realise that it’s him pushing it around?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303995",
"author": "MRC",
"timestamp": "2011-01-14T02:41:33",
"content": "he may be delusional, but he’s a pretty good craftsman.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304019",
"author": "vonskippy",
"timestamp": "2011-01-14T03:09:35",
"content": "Every “perpetual machine” on the planet is “almost there”.Sad that public education so ill prepares people for basic math.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304022",
"author": "The DON",
"timestamp": "2011-01-14T03:11:35",
"content": "Love the beauty, simplicity and craftsmanship.Bob nailed it though.Another way of describing why it won’t work would be to point out that the 1 or 2 balls weighing down on the larger diameter, can only act over a distance smaller than the inner ball tray. The inner ball diameter meanwhile is carrying more than 2 balls.Increasing the size difference between the inner and outer ball trays, dictates that the inner tray must be carrying proportionally more balls.Directly proportional to the the size difference that is.This is why it cannot work.Also, the larger the difference in diameter sizes, the more time a ball spends transitioning from one to the other, where it cannot exert is potential energy.Thus the larger the contraption becomes, the more effort it will require to turn.Once again though, I do love the beauty, simplicity and craftsmanship. The passion too.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304044",
"author": "kristian",
"timestamp": "2011-01-14T03:37:03",
"content": "even without friction, a system like that couldn’t sustain motion. it’s simpler than lever-arms and torques (although i agree well enough with Bob and The DON, i think), but really the unavoidable problem is that the work done on the system by a marble traveling down can’t be greater than the work done by the system on a marble traveling up. in fact, since this design uses ramps to transistion from the up and down states, the falling marbles add less energy to the system than the rising ones—no matter what. (the ramps require some change in elevation to work). this is why i said that even without friction these designs couldn’t work.. so yeahit’s some respectable craftsmanship, but being led by misguided physics makes this sadly wasteful… except for the experience gained in the build process.something i could appreciate would be a system designed with the goal to sustain motion with very little energy put into it (like a grandfather clock. i love clocks!) efficieny can be an art.it’s kindof funny to me how the other half of this post was more-or-less ignored. …ok i’m done now.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304048",
"author": "Calis",
"timestamp": "2011-01-14T03:40:34",
"content": "Physics….how does it work?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304065",
"author": "Darren",
"timestamp": "2011-01-14T03:58:51",
"content": "A very good craftsman. I was thinking the pieces were laser cut until I saw the draft marks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304074",
"author": "-HMav",
"timestamp": "2011-01-14T04:39:32",
"content": "Well, this could work. If gravity were somehow stronger on the “down” side of the larger wheel. Perhaps if he uses a portal to put half the machine in the vicinity of a black hole! Actually some magnets to help pull the marbles down on the periphery might have the same effect, but would the marbles still roll down hill away from the magnets?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304091",
"author": "Spork",
"timestamp": "2011-01-14T05:13:00",
"content": "I’ll just use magnets! — You know the source of free energy?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304140",
"author": "Erik Johnson",
"timestamp": "2011-01-14T06:45:08",
"content": "The problem I see with this is not friction – the only friction he has to worry about is the pivot of the wheel. It’s the ratio of inside balls to outside balls there should be fewer inside than outside, but you cant maintain that without eventually reducing the outside balls just through the working of the machine",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304163",
"author": "Matt",
"timestamp": "2011-01-14T07:01:19",
"content": "If people interested in working on free energy would just read a frickin’ book on the history of perpetual motion* they would realize that they are typically just rehashing designs that have been made over and over again over hundreds of years. In this case the perpetual motion machine here is simply from the category of “overbalancing wheels” which people have been trying to get free energy from for hundreds of years.*The book I have on the topic is “Perpetual Motion: The History of an Obsession” by Arther W. J. G. Ord-Hume. It provides a good history of the topic, though I wish it had some better discussion of the physics.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304189",
"author": "supershwa",
"timestamp": "2011-01-14T07:14:51",
"content": "@Spork – I’m going to assume you’re making a joke, since we know that even “permanent” magnets eventually lose their magnetic force….especially when introduced to other magnetic fields (many people have attempted the magnetically powered perpetual motion machines.)Project on the left looks fun…sadly the Chinese website doesn’t show me the video in the U.S. I remember an old kinetic clock back in the 80’s that sat on the desk in my father’s wood shop. I used to think it was the coolest “toy” in the world.Speaking of carpentry — our perpetual motion guy has great woodworking skills, but as stated by others here, he should probably consider brushing up on his physics.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304190",
"author": "Khai",
"timestamp": "2011-01-14T07:15:07",
"content": "I have a design for a perpetual motion system that should work.take 1 cat and a slice of buttered toasttie toast to cat, butter side out.drop.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304197",
"author": "Matt",
"timestamp": "2011-01-14T07:19:37",
"content": "And what’s up with the “We’re not betting on perpetual motion, but if we did, our money would be on something like the Steorn Orbo replica and not on this.”??Steorn is a scam conning investors and the “knowledge database” members who don’t know better out of their money. Replica or not Hackaday should not be giving Steorn anything that can be construed as positive press.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304256",
"author": "Bob",
"timestamp": "2011-01-14T08:47:32",
"content": "You want perpetual motion? Figure out how to reduce the entropy of a system. You’ll still need thermal energy, but you’d be able to capture it directly without producing more heat. Then you’d have all the energy you want from non absolute zero air.One idea is to capture energy from Brownian motion. There you would be converting thermal fluctuations directly into mechanical energy. The hard part is creating an efficient system of that size.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304261",
"author": "Krusty",
"timestamp": "2011-01-14T08:53:09",
"content": "At what point do you think he’ll be building a ferris wheel sized device???? That would be cool and if nothing else, he could sell rides!!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304270",
"author": "ryan",
"timestamp": "2011-01-14T09:11:49",
"content": "the bigger the outer wheel the more lifting the inner wheel has to do.No real solution for this guy. I hope he figures it out soon.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304277",
"author": "Earl Jr.",
"timestamp": "2011-01-14T09:24:10",
"content": "I WANT TO BELIEVE!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304330",
"author": "chris",
"timestamp": "2011-01-14T10:35:32",
"content": "while I find the fruitless effort sad, at least it’s an interesting design, he should make one with lots of tracks and throw a hidden motor on it.also, I believe the kinetic sculpture is by a fellow who goes by “denha” on youtube, and he’s made lots of really cool modular ball&track stuff, as well as some diy electronic stuff.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304345",
"author": "VIPER!",
"timestamp": "2011-01-14T10:48:00",
"content": "Yeah, I have seen many of these free energy systems. Gravity wheels, magnetic engines, etc, etc… They are all the same. Some one gets real excited about an idea that they think “Has to work” the “science” is SO simple. When they really need to attend a high school physics class to fully understand why this will never work. Either that or they just try to build an elaborate machine to impress people, trying to get “venture capital” in order to “Market it to a manufacture” LOL",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304354",
"author": "VIPER!",
"timestamp": "2011-01-14T11:00:15",
"content": "Check out his next video!I love the “Flower of Life” pattern on the bigger wheel. You know the one that needs to be just a little bit bigger yet to make the thing work forever.How much TIME did it take him to make those elaborate wheels.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304369",
"author": "strider_mt2k",
"timestamp": "2011-01-14T11:15:11",
"content": "I find the concept delightful and the implementations amusing.-right up until the guy continues to talk seriously about making it work.Then it’s just…uncomfortable.Of course if he makes it work he’s my hero again, but for now…uncomfortable.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304388",
"author": "PKM",
"timestamp": "2011-01-14T11:36:15",
"content": "Perpetual motion- it’s just a lot of balls and spin.HaD: I *seriously* hope you were joking about Orbo being “the one to put your money on”. It’s interesting, yes, but I would bet every penny I own on it *not* achieving perpetual motion. Please, for the sake of your site’s credibility, stick with the “this is a nice piece of carpentry” and stay away from “this wooden thing violates fundamental laws of the universe”.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304496",
"author": "Bob",
"timestamp": "2011-01-14T14:41:13",
"content": "What you need is a perpetual motion device that drives a gyro, then you’ve got yourself a flying car. Simples.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304524",
"author": "Bill Porter",
"timestamp": "2011-01-14T15:22:35",
"content": "I chuckled at one of the p-machine youtube comments:“How about adding a high performance bearing on the center axle to reduce friction? Maybe an electromagnetic bearing… “",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304616",
"author": "mic",
"timestamp": "2011-01-14T17:35:45",
"content": "How do magnets work?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304664",
"author": "Jake",
"timestamp": "2011-01-14T19:04:52",
"content": "This is a joke, right? This guy knows that it is not physically possible for this to work? Or is he really that gullible? Please tell me that he’s just kidding around…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304714",
"author": "Mikey",
"timestamp": "2011-01-14T20:36:34",
"content": "Gravity wheels due to diminishing returns won’t work — though it may at some point be possible to harness to energy of earth’s (or another body’s) gravity (what he’s trying to accomplish anyway — keep in mind, the only reason perpetual motion is said to not work is because it tries to power itself — that’s not what perpetual motion attempts to do, in fact — at least in the designs I’ve seen — they attempts to harness gravity — the same way we harness the flowing motion of a river connected to a water wheel connected to a dynamo… etc… — though I don’t believe we have the technology to do this yet, and it’s much easier to build a water wheel.)That being said: very nice craftsmanship (as others have also noted.) I look forward to seeing more of these.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304745",
"author": "bothersaidpooh",
"timestamp": "2011-01-14T21:28:01",
"content": "Actually there is a small chance that if RT superconductors ever become possible, if the system temperature is correctly biased so the SC is on the verge of quenching then a magnetic wheel like device might work as long as the temperature is in a very narrow range.Possibly down to hundredths of a degree C.the basic principle is similar to those heat engines that work on a cup of coffee.In this case equilibrium is reached when the system temperature rises or falls outside of the midpoint.this is broadly similar to the way in which a tunnel diode oscillator works.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304754",
"author": "bothersaidpooh",
"timestamp": "2011-01-14T21:35:46",
"content": "Should have also mentioned that quenching generates heat, so the device would need to be actively cooled in order to work for more than a few seconds.Guess where that energy comes from.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304848",
"author": "Cyberpigue",
"timestamp": "2011-01-15T00:12:50",
"content": "I have a neat old electric clock that you “start” by spinning an armature. This reminds me very much of it, especially the fact that it needs to be plugged in to work…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304887",
"author": "anfegori91",
"timestamp": "2011-01-15T01:08:43",
"content": "That machine is, in some way, perpetual. Over the years it has been reconstructed over and over again…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305050",
"author": "mic",
"timestamp": "2011-01-15T05:50:45",
"content": "Seriously though, how do magnets work? Nah just kidding, this is BS. Obey physics or keep your crap to your self.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305061",
"author": "Pogyhauler",
"timestamp": "2011-01-15T06:13:23",
"content": "Am I mistaken in assuming that something like the 3 laws of thermodynamics are taught someplace around 5th-6th grade?Am I mistaken in assuming that Most people posting here are at least High School graduates or equivalent?It seems like every 18 year old on the planet is intent on instructing every 17 year old on the planet on topics every 16 year old already knows.kiddies:Motion < work < change < energy. No energy, No motion.For any exceptions, talk to God.There are 2 kinds of 'perpetual' one is stasis. the other is limitless. Know which is which before you pontificate on either.Hence, There are 2 kinds of 'Perpetual Motion'.One, requires no input. static to dynamic with zero transfer. That don't happen. not even in Quantum Chromodynamics. Just in case you missed it. That is what this device and others like it claim to do.The other is tapping a provably eternal source with a local net gain. ex. Telekinetics, Cold Fusion, Gravity Waves (If Gravity is a local perception of a higher dimension flux).So far, it seems you can't do that in our universe. It's against the rules. On this side of the Big Bang, even galaxies die.If you can stab a stick into the wall of the universe, and use whatever leaks out, you got a machine.Until then, lets all get back to bashing Microcontrollers. It's less embarrassing.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,302.649615
|
||
https://hackaday.com/2011/01/13/let-paper-dolls-teach-you-science/
|
Let Paper Dolls Teach You Science
|
Mike Szczys
|
[
"Misc Hacks"
] |
[
"a to z",
"electronics",
"history",
"jeri ellsworth",
"theory"
] |
Remember how fun it was studying chemistry and physics in high school? Well we guess your recollection depends on the person who taught the class. Why not have another go at it by
learning the A-to-Z of electronics
from one of our favorite teachers, [Jeri Ellsworth].
You know, the person who
whips up chemistry experiments
and
makes her own semiconductors
? The first link in this post will send you to her video playlist. So far she’s posted A is for Ampere and B is for Battery, both of which you’ll find embedded after the break. Her combination of no-nonsense technical explanation, and all-nonsense paper-doll history reenactment make for a fun viewing whether you retain any of the information or not.
[youtube=http://www.youtube.com/watch?v=DSj1SH5Zpqg&w=470]
[youtube=http://www.youtube.com/watch?v=XOxMUZUJUS4&w=470]
[Thanks PT]
| 21
| 21
|
[
{
"comment_id": "303579",
"author": "walt",
"timestamp": "2011-01-13T19:41:47",
"content": "pretty cool. 1st!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303613",
"author": "Pilotgeek",
"timestamp": "2011-01-13T20:23:23",
"content": "Jeri Ellsworth is definitely towards the top of my list of most awesome people in the world.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303644",
"author": "Jeri Ellsworth",
"timestamp": "2011-01-13T20:44:55",
"content": "I’m taking my production values to a new low with these videos.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303649",
"author": "Fallen",
"timestamp": "2011-01-13T20:50:19",
"content": "Good stuff :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303687",
"author": "Min",
"timestamp": "2011-01-13T21:44:15",
"content": "Current does not flow! Current IS flow. Let’s not promote these misconceptions.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303690",
"author": "Ronnie James Diode",
"timestamp": "2011-01-13T21:49:20",
"content": "Simple, straightforward and hand-drawn. Just like those great Forrest M. Mims III books from Radio Shack. Great stuff Jeri!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303691",
"author": "Tubby",
"timestamp": "2011-01-13T21:50:32",
"content": "I am a big fan of Jeri.I stop into her chat and stream, often.good community of DIY folks in there.her recent “paper doll” video takes me back the the always excellent “secret life of machines”.great stuff Jeri.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303704",
"author": "Simon Inns",
"timestamp": "2011-01-13T22:10:42",
"content": "Totally worth the time to watch especially the huge pile of 9V batteries burning electrodes! Awesome stuff :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303705",
"author": "rlingenf",
"timestamp": "2011-01-13T22:11:32",
"content": "Nice video. I watched your “don’t be afraid to fail” vid also. It has a really great message for everyone, of every age. Most of us try to hide our failures, or don’t try if we think we might flop. Thanks for sharing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303713",
"author": "pdadio",
"timestamp": "2011-01-13T22:16:24",
"content": "Love it! When do we get to differential equations in circuit analysis?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303714",
"author": "Edward",
"timestamp": "2011-01-13T22:17:25",
"content": "@MinShe explains current flow properly in that video.She in fact, states that current is the flow.If you’re going to nitpick at-least have the decency to be right.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303813",
"author": "osgeld",
"timestamp": "2011-01-13T23:56:18",
"content": "Tubby if you did not already know they have all the episodes available for download on their sitehttp://www.secretlifeofmachines.com/dvds_and_videos.htmI have them all on my xbox =)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303919",
"author": "Min",
"timestamp": "2011-01-14T01:25:17",
"content": "@EdwardWhy would I watch a video that in the sole screenshot has a critical error?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303964",
"author": "supershwa",
"timestamp": "2011-01-14T02:06:37",
"content": "@Min you’re obviously not familiar with Jeri’s work. She’s got to be one of the best DIY electronic engineers out there right now, and I’ve found her videos to be INCREDIBLY informative (she needs her own “Jeri Ellsworth Certification” online course…)Jeri’s videos should be on DVD, and need to accompany the “Getting Started in Electronics” textbook by Forrest M. Mims III.Awesome work, Jeri — keep up the excellent work!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303966",
"author": "supershwa",
"timestamp": "2011-01-14T02:10:34",
"content": "@Min – also, watch the video…she states “Current IS the flow of charge”…Gotta love it when trolls make comments before checking out the supplied resources.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303968",
"author": "Willyshop",
"timestamp": "2011-01-14T02:11:18",
"content": "@min If an economics professor posted an insightful video explaining the financial system (and you were interested in that sort of thing) would you choose to miss out simply because a screenshot has a drawing of an “ATM machine”? Sure it’s redundant, but it’s common parlance.Besides which, certainly when you first flip the circuit on, ∂j/∂t = -Δj ≠0, so it certainly makes sense to define a “current flow” as the current propagates back along the wire.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304040",
"author": "Rad Brad",
"timestamp": "2011-01-14T03:26:49",
"content": "Great as always!Brad",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304079",
"author": "magnet18",
"timestamp": "2011-01-14T04:47:23",
"content": "Is there anything Jeri doesn’t do?Because her stuff repeatedly takes DIY beyond anything Ive ever seen.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304094",
"author": "Urza",
"timestamp": "2011-01-14T05:19:14",
"content": "My roommate did the whole massive stack of 9V batteries thing not too long ago. I don’t know where he got them, but he found a pack of 40 or so 9Vs that were dirt cheap. Blew up wires, did some pretty significant electrolysis, and managed to light up his desk lamp with them.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305550",
"author": "strider_mt2k",
"timestamp": "2011-01-15T19:55:00",
"content": "Not only are the lessons great, but I’m happy to see the cool handhelds in the background too.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "334421",
"author": "Mike Beauchamp",
"timestamp": "2011-02-16T06:36:40",
"content": "Thanks for posting this HAD, and thank you for making this Jeri.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,302.929702
|
||
https://hackaday.com/2011/01/13/man-made-rainbow-uses-only-sunlight-and-rainwater/
|
Man Made Rainbow Uses ONLY Sunlight And Rainwater
|
Mike Szczys
|
[
"green hacks"
] |
[
"mist",
"rainbow",
"rainwater",
"solar"
] |
This rainbow is and is not natural. It’s the product of rainwater and sunlight so in that respect it’s natural. But as you can see, it’s not raining.
This is an art installation
that uses captured rainwater, stored solar electricity, and irrigation equipment to float a heavy blanket of mist in the air. The prismatic effects of the suspended water particles separate the sunlight into various bands by wavelength and a rainbow springs into existence.
We’ve done this before with a garden hose in the back yard. It might be fun to try to build a version that recycles the water as this does, perhaps using a rain barrel as a reservoir. It would certainly be much easier than pulling off that
water-based 3-D display
we’ve been meaning to undertake.
[Thanks Xb0xGuru]
| 20
| 20
|
[
{
"comment_id": "303493",
"author": "Squirrel",
"timestamp": "2011-01-13T18:05:27",
"content": "To see a rainbow:Be standing in between a sheet of falling water droplets and the sunLook directly away from the sunThe rainbow will be at an angle of 42 degrees",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303534",
"author": "rallen71366",
"timestamp": "2011-01-13T18:47:45",
"content": "@Squirrel – Thanks, now I’m going to have to carry a protractor around. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303555",
"author": "KingofPain",
"timestamp": "2011-01-13T19:13:10",
"content": "But can you make a double rainbow? (ok, ok, sorry. it escaped before I could contain it.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303561",
"author": "Pilotgeek",
"timestamp": "2011-01-13T19:16:28",
"content": "*sigh* – Really? I think we’ve all made our own rainbows with a garden hose as a kid, and this is just a glorified version of that. I mean, really, what’s the next “hack” going to be, hacking cardboard boxes to make a fort?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303565",
"author": "humble reader",
"timestamp": "2011-01-13T19:20:54",
"content": "The title is odd as rainbows are alwaysONLY rainwater and sunlight.@KingofPainI think all rainbows are “double” and evenhigher “harmonics” it’s just that the viewingconditions are rarely good enough; brightness,contrast… to see the double or higher modes.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303583",
"author": "DarkFader",
"timestamp": "2011-01-13T19:46:07",
"content": "How many rainbows can you see with this? 12?http://www.mathpages.com/home/kmath611/kmath611.htm",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303585",
"author": "Ivan",
"timestamp": "2011-01-13T19:48:23",
"content": "Yes, but do they generate pots of gold also?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303646",
"author": "Velli",
"timestamp": "2011-01-13T20:46:51",
"content": "http://www.youtube.com/watch?v=_c6HsiixFS8IT’S A CONSPIRACY!The artists are clearly agents of some diabolical government (as if there’s any other kind.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303664",
"author": "daydreamer",
"timestamp": "2011-01-13T21:16:51",
"content": "why are there so many songs about rainbows",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303667",
"author": "Philip",
"timestamp": "2011-01-13T21:19:35",
"content": "Anyone ever seen a rainbow upside down, I snapped a pic on my phone, will have to dig it out if its not normal.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303674",
"author": "Duncan Domingue",
"timestamp": "2011-01-13T21:25:23",
"content": "I’ve always said there’s a market for man-made rainbows. Just imagine getting married with a rainbow directly behind the altar (if getting wed outside, of course). Or what about bat mitzvahs? It seems worthwhile to me, too bad I don’t have the capital to start a rainbow-peddling company. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303676",
"author": "unforgiven",
"timestamp": "2011-01-13T21:29:03",
"content": "pilotgeek nailed it; this is the dumbest quote-unquote hack I’ve ever seen on hack a day.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303777",
"author": "ehrichweiss",
"timestamp": "2011-01-13T23:25:22",
"content": "Velli: I *attempted* to have a discussion with the rainbow conspiracy lady one time. She’s impossible to talk to. She’ll (obviously) disbelieve every single thing you tell her and eventually you figure out that it’s easier to beat your head against a wall than to deal with her at all.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303779",
"author": "Bob",
"timestamp": "2011-01-13T23:25:40",
"content": "You should be careful of rainwater, it’s full of dihydrogen monoxide.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303876",
"author": "strider_mt2k",
"timestamp": "2011-01-14T00:45:56",
"content": "Rainbows used to mean a covenant.Then Rainbow and Covenant both split up and rock was never really the same again after that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304058",
"author": "FineousTrout",
"timestamp": "2011-01-14T03:52:19",
"content": "Water+Sunlight?Weird thought tangent: would that work in a vaccuum? I’m thinking in a vaccuum the water would instantly boil off into ice crystals, and you’d get no rainbow. If that’s the case, then the air as a medium of droplet suspension is also essential to the formula: Water+Sunlight+Air=Rainbow. Anybody here ever seen a rainbow that was created in a vaccuum?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304336",
"author": "smoker_dave",
"timestamp": "2011-01-14T10:39:28",
"content": "It’s not a dumb hack at all.Yes you may have made a rainbow with a hose in the garden, and yes, the artist could have simply bolted a massive hose pipe to the side of the building and plugged it all into the mains.What we have here is “sustainable technology” / “sustainable art”. If you actually look at the big picture, you could learn a lot from this. Maybe not so much in the project content, but in the project ethos.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304446",
"author": "Chris",
"timestamp": "2011-01-14T13:03:41",
"content": "I’m going to be impressed when they do artificial sundogs",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304532",
"author": "Swankie",
"timestamp": "2011-01-14T15:37:56",
"content": "they should add a black backdrop so the (double) rainbow can be seen much better.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "321636",
"author": "Jim Davies",
"timestamp": "2011-02-03T01:20:55",
"content": "Who do I contact about creating a rainbow for a Project I am working on?",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,303.088032
|
||
https://hackaday.com/2011/01/13/pin-header-sizing-machine/
|
Pin Header Sizing Machine
|
Mike Szczys
|
[
"Tool Hacks"
] |
[
"kit",
"pin header"
] |
[Ammon Allgaier] built
a tool that can break apart pin headers
with a high level of precision. In the video after the break he demonstrates the built-in features. They include an adjustable stop to select the number of pins you’d like in each chopped segment. There’s also a small groove in the input side which the plastic frame of the header rides in. Just insert until it is touching the stop, and push down to break the header at the correct location. A couple of springs return the cutting tooth to its resting position, allowing you to make quick work of chipping up a 40-pin blank. This machine will become a nice companion for that
automatic wire cutter
.
This is great for single headers but we’ve long been on the lookout for a reliable way to snap off double pin headers. Far too often we make mistakes when trying to use two pair of pliers. If you know of a better way, please share your method in the comments.
[youtube=http://www.youtube.com/watch?v=_Der8BGrbtQ&w=470]
| 41
| 41
|
[
{
"comment_id": "303434",
"author": "wwwhizz",
"timestamp": "2011-01-13T16:51:08",
"content": "I always use nail-clippers. Works like a charm.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303437",
"author": "skitchin",
"timestamp": "2011-01-13T16:53:57",
"content": "Nice! I always have a hard time getting clean breaks. Looks easy enough to make",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303443",
"author": "Amperand",
"timestamp": "2011-01-13T17:04:43",
"content": "“There’s also a small grove in the input side…”>< \"There's also a small groove in the input side…\"",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303449",
"author": "realEngineer",
"timestamp": "2011-01-13T17:13:38",
"content": "2 words….hot knife",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303452",
"author": "spiderwebby",
"timestamp": "2011-01-13T17:16:54",
"content": "2 more words: flush cutters.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303453",
"author": "alex",
"timestamp": "2011-01-13T17:16:57",
"content": "x-acto knife",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303456",
"author": "fartface",
"timestamp": "2011-01-13T17:21:59",
"content": "It wont work on double row or triple row headers.Epic fail.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303458",
"author": "Chris",
"timestamp": "2011-01-13T17:24:09",
"content": "Last time I did headers, I cut them on my scroll saw, just because it was handy. Worked great.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303460",
"author": "osgeld",
"timestamp": "2011-01-13T17:25:45",
"content": "x-acto saw for me",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303461",
"author": "Garreth",
"timestamp": "2011-01-13T17:29:35",
"content": "I line mine up with one of those razor scraper things for paint. mine is nice and straight from the back of the handle to the end of the razor, so if I cant do it by hand, a good tap with a hammer will push the blade cleanly through the headers.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303465",
"author": "Macpod",
"timestamp": "2011-01-13T17:32:48",
"content": "karate chop",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303468",
"author": "Karl",
"timestamp": "2011-01-13T17:34:41",
"content": "Modify a Weller soldering Gun – replace the standard tip [FYI – I make replacement ones from a length of #14 copper wire flattened at the tip area and bend to shape]. A length of nichrome wire between the two terminals of the gun make a hot wire cutter for the headers.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303470",
"author": "vtl",
"timestamp": "2011-01-13T17:35:24",
"content": "I use a screwdriver as a chisel. I line it up and hammer it with a heavy pair or pliers. I like using tools for non intended purposes. But seriously, it actually gives a pretty clean edge for double row headers",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303511",
"author": "Alex B",
"timestamp": "2011-01-13T18:09:46",
"content": "Screwdriver/Chisel and Hammer for me as well.No wrong way to break a header.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303525",
"author": "MoJo",
"timestamp": "2011-01-13T18:33:16",
"content": "You can separate two or three at a time with two pairs of pliers. Just make sure you use them to grip either side of where you want the split and there is no way the break can form anywhere but where you want it.Alternatively you can do the same sort of thing with a vice and one pair of pliers.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303530",
"author": "spiritplumber",
"timestamp": "2011-01-13T18:41:31",
"content": "I just use fingers and sometimes teeth… that said ths is a very elegant design, Leonardo da Vinci would be proud :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303535",
"author": "meh",
"timestamp": "2011-01-13T18:50:38",
"content": "ummmmmm. it needs an ardunio. Right now it has absolutely no blog cred.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303559",
"author": "Eirinn",
"timestamp": "2011-01-13T19:15:52",
"content": "Just snap them off using a pair of pliers – there’s absolutely no need to cut them… well ok i guess if you cut them you avoid those annoying ones where it snapped off a little too much.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303564",
"author": "HackerK",
"timestamp": "2011-01-13T19:19:29",
"content": "Over Engineered.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303576",
"author": "Tom",
"timestamp": "2011-01-13T19:37:15",
"content": "I’ve never really considered any way to cut header, other than flush cutters (kudos spiderwebby), any decent set of cutters will make quick work of single, double or triple (yes, triple) headers.Though this is obviously handy for large quantities of single row header, and it’s quite nicely made = job well done. +1.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303580",
"author": "Jake",
"timestamp": "2011-01-13T19:43:59",
"content": "LOL. This takes a simple task that can be quickly performed by hand, and makes it a complex task which requires a large wooden apparatus.This is like killing a mosquito with an ancient black powder cannon. It’s not just overkill, it’s a pain in the ass!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303589",
"author": "DarkFader",
"timestamp": "2011-01-13T19:51:11",
"content": "What about a veroboard cut in half, perhaps double height for strength. Then place the header and bend the two halves.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303595",
"author": "Seshan",
"timestamp": "2011-01-13T19:56:57",
"content": ">x-acto knife>nail clippers>hot knifeI just use my freaking fingers.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303596",
"author": "whoolie",
"timestamp": "2011-01-13T19:57:56",
"content": "I use a single pair of pliers and the edge of a table.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303606",
"author": "Fallen",
"timestamp": "2011-01-13T20:18:26",
"content": "+1 for flush cutters.But this is a nifty little machine, kudos.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303665",
"author": "borgar",
"timestamp": "2011-01-13T21:17:37",
"content": "what, wirecutters going out of fashon?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303721",
"author": "Jakezilla",
"timestamp": "2011-01-13T22:22:49",
"content": "If you were building a bunch of boards and needed say 150 of the exact same header I can see something like this being extremely useful. A sharp X-Acto and a cardboard covered work surface is all I have ever needed. Diagonal pliers if I don’t care about the smashed plastic on the end.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303747",
"author": "Lucky",
"timestamp": "2011-01-13T22:52:34",
"content": "Needs automation",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303750",
"author": "James Jarvis",
"timestamp": "2011-01-13T22:58:00",
"content": "We use hundreds and hundreds of headers at my business. It is way more economical to buy longer headers and cut to length than each exact size. Gotta go check out the device. Thanks!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303844",
"author": "tc",
"timestamp": "2011-01-14T00:24:50",
"content": "+1 for fingers, but mine are really small. it’s pathetic.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303881",
"author": "strider_mt2k",
"timestamp": "2011-01-14T00:50:22",
"content": "Okay, but can you re-size 2.5mm spacing down to 2mm?I’m trying to scrounge the other pin header to put in my Spy Gear Video Trakr and the 2.5mm stuff is all over the place. I just can’t seem to find any industrial stuff in our scrap area with the small stuff in it right now. :|Meh. It’ll come around.Something always does. ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303896",
"author": "Aviator747",
"timestamp": "2011-01-14T01:03:09",
"content": "Hobby Razor Saw",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303906",
"author": "Bill D. Williams",
"timestamp": "2011-01-14T01:13:17",
"content": "@ the dudes saying “I use a __________”Yea, but you don’t do several hundred at a time, do you?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303918",
"author": "Jack Sprat",
"timestamp": "2011-01-14T01:24:23",
"content": "This is like an ugly stapler with a way to adjust how many staples come out at a time.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303941",
"author": "jeditalian",
"timestamp": "2011-01-14T01:44:59",
"content": "Use the Force.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304053",
"author": "Ben",
"timestamp": "2011-01-14T03:47:18",
"content": "Pretty sweet construction. Still, who really has the space on their bench to devote to a machine like this? If it isn’t taking up that precious, very accessible space, it is certainly a lot more work than using a knife or just hands.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304243",
"author": "Tyler",
"timestamp": "2011-01-14T08:20:00",
"content": "I definitely see the usefulness in large builds. This could be handy at work.I’ve always used the plier method, but many times I get in a rush when breaking off multiple of the same size and make a mistake or two. So this could definitely be useful when breaking hundreds of headers. We never oder the exact size of header either, so breaking is always necessary.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304570",
"author": "Nathan",
"timestamp": "2011-01-14T16:37:42",
"content": "seems like the adjustment bit is a bit awkward and would require fine tuning each adjustment.Maybe you could use an example pin header, and use the pins themselves to control the spacing, so that the adjustment would be a simple lift and set onto the appropriate number of pins.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304573",
"author": "Nathan",
"timestamp": "2011-01-14T16:38:52",
"content": "The knife could be stationary, and the stop held in place by another one or two strips of headers.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304991",
"author": "McGuiver",
"timestamp": "2011-01-15T04:37:36",
"content": "I just use my pocket knife & my wife’s wooden cutting board. I may use 2 rows worth in a year. Way to much work to build a machine to do this. It is a good idea if you have time to kill.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305642",
"author": "biozz",
"timestamp": "2011-01-15T21:49:08",
"content": "i use wire cutters for this … i thought they were built to cut them with wire cutters O_o",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,302.722658
|
||
https://hackaday.com/2011/01/12/turning-a-one-armed-bandit-into-web-slots/
|
Turning A One-armed-bandit Into Web Slots
|
Mike Szczys
|
[
"Arduino Hacks"
] |
[
"arduino",
"Pearl",
"slot machine",
"streaming",
"ubuntu"
] |
[Kyle Kroskey] just finished his first Arduino project,
adding web control to a slot machine
. He started with an IGT S+ model which were extremely popular in Vegas and Atlantic City casinos for years, but are now being replaced with more modern versions. His grand idea was to modify the machine so that it can be controlled from a PC, then unleash a live stream so that the Internets can play.
This turned out not to be too hard, there’s just a few controls he patched the Arduino into; the button for maxing out the wager amount, and sensors that measure coin inserts and payouts. In order to keep the peace he disconnected the speaker but rerouted the audio into a PC so that it can be played over the streaming feed. This make sure it’s quiet in the room without sacrificing the online fun. The PC is running Ubuntu and controls the video feed, a screen detailing jackpot data above the machine, and facilitates passing webpage player requests to the Arduino for machine control.
For another fun slot machine hack, check out this
gaming device turned bartender
.
| 14
| 14
|
[
{
"comment_id": "302791",
"author": "joe",
"timestamp": "2011-01-12T22:38:14",
"content": "I don’t understand, Why?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302794",
"author": "emilio",
"timestamp": "2011-01-12T22:41:23",
"content": "interesting! you could do some cool testing of machine randomness with this.re-routing the audio is smart but… won’t it still be going “whrrrrrrrrrrrCHUNKrrrrrCHUNKrrrrrrCHUNK”?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302818",
"author": "Spork",
"timestamp": "2011-01-12T23:11:53",
"content": "@joeTo let people play it online? Especially placed where there are no slots/gambling.@emilioI’d imagine that sound really isn’t too bad. From what I recall a lot of the sound is added, even the stop sounds. That said, I’d probably put this in an isolated area if possible to reduce the bother that it could create.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303021",
"author": "vtl",
"timestamp": "2011-01-13T03:30:28",
"content": "Should rig the odds so it never pays off",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303055",
"author": "Shadyman",
"timestamp": "2011-01-13T04:35:37",
"content": "@vtl: You mean moreso than they already are? ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303211",
"author": "ohgod",
"timestamp": "2011-01-13T09:36:41",
"content": "You should implement a webcam for the players so they can watch each other waste away and destroy themselves",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303568",
"author": "leadacid",
"timestamp": "2011-01-13T19:25:15",
"content": "I was kinda hoping to see some pictures of the thing’s internals, not just a text writeup… Oh well.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303598",
"author": "DarkFader",
"timestamp": "2011-01-13T19:59:39",
"content": "No SAS communication?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303634",
"author": "Jim",
"timestamp": "2011-01-13T20:37:17",
"content": "“do some cool testing of machine randomness”I read a couple of years back that people have already done this and figured out that the machines cheat. You can download fruit machine emulators that will run the real code from various machines, but which also allow you to save the state and go back, useful for looking at things like high/low gaambles, and surprise surprise the odds are fixed against you.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303790",
"author": "Ugly American",
"timestamp": "2011-01-13T23:32:24",
"content": "What’s more foolish than playing a slot machine?Playing an unregulated slot machine over the net.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304641",
"author": "Jake",
"timestamp": "2011-01-14T18:28:43",
"content": "aww man I am recovering from a gambling addiction and this kind of crap doesn’t help. wee need to censor the internet more closely.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309649",
"author": "solareon",
"timestamp": "2011-01-20T03:42:34",
"content": "@DarkFader – Don’t have the software for the SAS protocol. It’s not easy to come by from what I have read",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "321414",
"author": "skhisma",
"timestamp": "2011-02-02T20:28:44",
"content": "@emilio: Mostly what you end up hearing is the relays firing for the wheels – much better than the claw game we used to have in the window.@ohgod: It’s up via Justin TV here:http://rocktheslot.com/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6412325",
"author": "Tim",
"timestamp": "2022-01-06T18:34:12",
"content": "Where can I find the instructions on how to build this arduino controlled device. I just bought my first IGT S2000 slot machine yesterday and would like to be able to add credits to it remotely.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,302.97689
|
||
https://hackaday.com/2011/01/12/skywalker-a-really-really-tall-bike/
|
SkyWalker: A Really Really Tall Bike
|
Mike Szczys
|
[
"Transportation Hacks"
] |
[
"bicycle",
"tall bike"
] |
[Brad Graham] enjoys building bikes. He threw together a tall bike called
the SkyWalker and then shared the build details
(link dead,
try the Internet Archive version
). It’s got everything you’d expect in a fixed-gear bike; a seat, pedals, steering, and two wheels. You’ll have to do a bit of climbing to get into the saddle but the incorporated ladder doubles as passenger space. [Brad] says the thing has no problem supporting up to four riders at a time. Check out the video after the break to see that the ladder and large-height steering frame make the bike easy to stop and start without leaning on something. Wow.
We’re thrilled and scared at the same time. At least that
over-under tandem had full-sized wheels
. But those tiny rims on this oblong creation? Yikes!
[youtube=http://www.youtube.com/watch?v=htVNrO8lWv0&w=470]
| 37
| 36
|
[
{
"comment_id": "302719",
"author": "Aero",
"timestamp": "2011-01-12T20:34:30",
"content": "The site is down…The bike in the video is not the same as the yellow bike in the picture. I question the stability of the yellow one at low speeds and during mounting/dismounting.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302720",
"author": "xeracy",
"timestamp": "2011-01-12T20:34:36",
"content": "i’ve seen some tall bikes irl, but this takes the cake. I like how it stays upright as he climbs down. physics: its better than magic!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302721",
"author": "DeadlyFoez",
"timestamp": "2011-01-12T20:34:44",
"content": "Cool, and crazy. I’d break my neck if were to try that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302725",
"author": "Stormcloak",
"timestamp": "2011-01-12T20:37:43",
"content": "It’s all fun and games until you go under an overpass…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302734",
"author": "Metalwolf",
"timestamp": "2011-01-12T20:50:01",
"content": "Good luck at the drive through, i think it might be over the height limit.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302743",
"author": "Cracknel",
"timestamp": "2011-01-12T20:58:43",
"content": "I wonder how it works with some wind blowing from the side…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302753",
"author": "JC",
"timestamp": "2011-01-12T21:25:40",
"content": "My body hurts just looking at that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302759",
"author": "vonskippy",
"timestamp": "2011-01-12T21:39:40",
"content": "I’m a Nigerian Zoologist studying Giraffes in the Sudan, I’d like to give you 4.8 Million US to further the development of such a great research bike. Please send me all your personal data and bank info so that I can start the wire transfer.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302761",
"author": "Bill",
"timestamp": "2011-01-12T21:41:17",
"content": "Through on some side impact air-bags and I’d go for a ride!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302763",
"author": "Bill",
"timestamp": "2011-01-12T21:42:28",
"content": "Oops, I mean ‘Throw’ on some side impact air-bags and I’d go for a ride!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302789",
"author": "Bergo",
"timestamp": "2011-01-12T22:34:54",
"content": "I dislike wearing helmets, would wear one on that thing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302796",
"author": "MrX",
"timestamp": "2011-01-12T22:43:10",
"content": "Holly cr** that is so awesome. Simple design, extreme possibilities – I love it.I love even more other people’s reactions – they are seriously in a WTF state.This is a hack.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302805",
"author": "monototo",
"timestamp": "2011-01-12T22:52:47",
"content": "> “It’s got everything you’d expect in a fixed-gear bike”That is, everything other than a fixed gear.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302841",
"author": "Jaymz",
"timestamp": "2011-01-12T23:45:57",
"content": "Awesome! You are the boss. But I am afraid for your safety. How will it go if you tip over? You jump off and land on your feet? I hope so. Anyways, this is a “don’t try this at home” isn’t it? You go!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302845",
"author": "Jason",
"timestamp": "2011-01-12T23:50:34",
"content": "Any brakes?What happens when you come to a full stop? :(",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302852",
"author": "Koolguy007",
"timestamp": "2011-01-12T23:58:31",
"content": "@vonskippy Im pretty sure the troll detector just shat bricks and caught fire with that one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302860",
"author": "MrX",
"timestamp": "2011-01-13T00:07:12",
"content": "@JaymzIt doesn’t sound that dangerous, at least it is low enough to allow landing on feet safely. It also has a lot of room to move and prevent getting stuck in the frames in case of tipping over. The only thing I think it might be a little dangerous is the case he is cycling near a car and he tips over..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302895",
"author": "81rdm4n",
"timestamp": "2011-01-13T01:00:25",
"content": "Site’s not down… Go to:http://atomiczombie.com/ct-skywalker.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303010",
"author": "Branno",
"timestamp": "2011-01-13T03:11:16",
"content": "Yeah, definitely not fixed-gear. Singlespeed, but not fixed-gear.I’m no safety stickler or anything, but this guy REALLY needs to use a helmet. Besides that, this thing is awesome.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303012",
"author": "therian",
"timestamp": "2011-01-13T03:19:31",
"content": "every stopping must feel like falling from the roof",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303030",
"author": "Hirudinea",
"timestamp": "2011-01-13T03:55:07",
"content": "Did people learn nothing from the penny farthing!?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303094",
"author": "Rad Brad",
"timestamp": "2011-01-13T06:07:49",
"content": "Hey thanks for posting my crazy bike. I do miss riding that beast, and never once had any mishaps on it. You can see for miles in all directions, so traffic cannot surprise you!When you are stuck indoors programming Verilog all day, it’s nice to go out and surf the urban skies once and a while.Cheers.Brad of AtomicZombie.com & LucidScience.com",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303205",
"author": "Csae",
"timestamp": "2011-01-13T09:30:11",
"content": "That is awesome.As for the getting up/down, you can clearly see him having one hand on the handle bars to steer the bike and keep it from tipping over.I would question tipping over, simply because it does not look like he could realistically get enough space between him and the frame. I’d want to get out of it before landing and it doesnt look that easy from the location of his feet.Also, this would fail in canada, too many potholes.: (",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303286",
"author": "Davo1111",
"timestamp": "2011-01-13T12:07:30",
"content": "Theres a group in canberra, Australia who do this. They just weld bike frames ontop of one another. No as high as this though",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303380",
"author": "Leithoa",
"timestamp": "2011-01-13T15:06:42",
"content": "Riding these things on level ground is fine, but I had a friend who had a shorter tall bike and he had trouble going up inclines, his bike kept trying to do wheelies…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303382",
"author": "riycou",
"timestamp": "2011-01-13T15:11:34",
"content": "i want to see him go up a hill in my city lol he will be on his butt in a few minutes when he tryes to ride down here id say try jousting but i guess that would be too dangerous for this thing. Still good job not really a hack just a mod but its still good.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303599",
"author": "kdougan",
"timestamp": "2011-01-13T20:02:40",
"content": "I find it amazing how many people on this site question the practicality of a “hack.” Dude built a tall bike for fun and experience not to ride to work everyday. I give him props and kudos.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303612",
"author": "Richard",
"timestamp": "2011-01-13T20:22:26",
"content": "That’s wonderfully pointless, and looks like a wonderful way to have fun and break your neck at the same time. :-)Kudos to Brad and his big brass balls for daring to mount that thing!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303638",
"author": "JB",
"timestamp": "2011-01-13T20:41:10",
"content": "Weird hack. I would definitely need a large helmet and body armor to ride one. Something like thishttp://www.bangitout.com/uploads/3952.jpeg",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303884",
"author": "strider_mt2k",
"timestamp": "2011-01-14T00:53:48",
"content": "Brad is, was, and always will be one of my favorite online hacker dudes.Gave me and my lil’ home made rover a great write up in his book years ago, and remains a positive force in the hacker world to this day.You rock man!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304118",
"author": "Colin",
"timestamp": "2011-01-14T06:03:45",
"content": "It’s amazing how few links it takes me to get from working on my projects to watching a school bus do a wheelie…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305537",
"author": "Matt",
"timestamp": "2011-01-15T19:18:26",
"content": "It needs landing gear…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306640",
"author": "Seb Wiers",
"timestamp": "2011-01-16T23:29:23",
"content": "“But those tiny rims on this oblong creation? Yikes!”All else equal (quality of rim, hub, spokes) smaller wheels are stronger and stiffer. With those big, heavy frames, smaller wheels make sense. Its not like they are designed for rolling over obstacles anyhow…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "563398",
"author": "Fixie Advocate",
"timestamp": "2012-01-20T15:09:12",
"content": "I’m glad it’s got a ladder incorporated into the frame, when the rider feels the bike start to fall over he can get off the saddle very quickly and run down the ladder to the safety of the ground before the bike hits the deck. Very clever engineering!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "642145",
"author": "Adam",
"timestamp": "2012-05-01T21:14:50",
"content": "Really want to rent some Tall Bikes for a TV show in Southern Cali… any suggestions?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6215752",
"author": "Katherine",
"timestamp": "2020-01-31T18:22:09",
"content": "How can I get permission to use this photo on my Instagram?!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6215789",
"author": "Elliot Williams",
"timestamp": "2020-01-31T20:59:21",
"content": "Contact the image’s owner. His name and website are in the post.",
"parent_id": "6215752",
"depth": 2,
"replies": []
}
]
}
] | 1,760,377,302.873427
|
||
https://hackaday.com/2011/01/12/quit-your-job-a-build-a-pipe-organ/
|
Quit Your Job And Build A Pipe Organ
|
Mike Szczys
|
[
"Musical Hacks"
] |
[
"mechanical engineer",
"pipe organ"
] |
[Raphi Giandiulio] grew tired of designing expensive things for Texas Instruments, so
he quit his job and built this organ
. Now there is some back story here, [Raphi’s] dad was a professional musician and [Raphi] played trumpet through college. He is a mechanical engineer by trade and that’s where a lot of the expertise for the instrument design came from. The project and the website that documents it are very large in scope, detailing the design process (including CAD drawings), the build, and a tour of his woodshop. The instrument includes 250 pipes and took about four years to finish, concluding in 2007. We weren’t surprised to learn that [Raphi] now has a new job… building organs.
Perhaps you’d be more interested in
hacking an existing pipe organ
?
[Thanks M]
| 23
| 23
|
[
{
"comment_id": "302626",
"author": "mi6x3m",
"timestamp": "2011-01-12T18:29:29",
"content": "Jesus Christ….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302642",
"author": "sm10sm20",
"timestamp": "2011-01-12T18:43:59",
"content": "How can this happen so often? Not trying to be an ass, but really?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302644",
"author": "Jorge",
"timestamp": "2011-01-12T18:49:52",
"content": "His old co-workers use to always say, “Ralph, that’s just a pipe dream”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302648",
"author": "Hackius",
"timestamp": "2011-01-12T18:52:49",
"content": "What did he do for money during those 4 years?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302665",
"author": "Thomas",
"timestamp": "2011-01-12T19:04:18",
"content": "Wow, the man obviously isn’t hurting without income from TI. Why trash him for that?Very impressive!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302668",
"author": "Samp",
"timestamp": "2011-01-12T19:06:14",
"content": "Hmm interesting, I wish I could do that, quitting my job and build something nice.But I guess I don’t have that much luxury in my life.A very nice project nonetheless.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302674",
"author": "ehrichweiss",
"timestamp": "2011-01-12T19:12:24",
"content": "Vicky said: “Why is your organ so small?”Bruce replied: “I didn’t know I was playing in a cathedral.”Sorry, had to be done..:)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302680",
"author": "colsolare",
"timestamp": "2011-01-12T19:25:38",
"content": "Why not build a wooden Ti-89?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302684",
"author": "tooth",
"timestamp": "2011-01-12T19:31:35",
"content": "Now can he play it?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302685",
"author": "Hirudinea",
"timestamp": "2011-01-12T19:36:44",
"content": "Thats not a hack, thats friggin’ art!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302695",
"author": "JC",
"timestamp": "2011-01-12T19:53:23",
"content": "Yeah, beautiful build. That’s awesome that he could quit his job and then get a job doing his “hobby”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302850",
"author": "wouter",
"timestamp": "2011-01-12T23:55:19",
"content": "just awesome..I agree this isn’t a hack but I don’t really give a . . C .I guess we can only hope to get a new job in a way like this. For most who quit there jobs it isn’t turning out this well..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302885",
"author": "Lane",
"timestamp": "2011-01-13T00:40:01",
"content": "Matthias Wendel has a simpler build, but he did it a lot faster:http://www.sentex.net/~mwandel/organ/organ.htmlHis website is full of wonderful builds and software hacks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302908",
"author": "OldVamp",
"timestamp": "2011-01-13T01:13:03",
"content": "Reminds me of this one:http://www.sentex.net/~mwandel/organ/organ.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302942",
"author": "Jake",
"timestamp": "2011-01-13T01:45:31",
"content": "Ummm… TI is a GREAT company to work for, and everyone I know that works there is incredibly happy with their jobs – Moreso than any other companies employess whom I am acquainted with, and I know people at a LOT of companies. When you get tired of what you do at TI, they let you move to a different department. I know people at TI who have moved through 5+ departments in 20 years.What’s the chance he got fired? I find his “I needed a change” story highly suspicious. I’m betting that his employment was terminated by TI.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302983",
"author": "mjrippe",
"timestamp": "2011-01-13T02:44:51",
"content": "I work a couple evenings a week with a friend who restores jukeboxes, player pianos, and orchestrions for a hobby/side business. We always daydream about quitting our day jobs and doing it full time. It is good to see someone living that dream!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303020",
"author": "paul",
"timestamp": "2011-01-13T03:29:01",
"content": "@mi6x3mtook the words right out of my mouth@Jorge, ehrichweiss, colsolareawesome",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303369",
"author": "Erik Johansson",
"timestamp": "2011-01-13T14:36:39",
"content": "@JakeMaybe his transfer to the pipe organ department got denied. Lots of people change jobs/employer and very few of them do it because they get fired.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303466",
"author": "IJ Dee-Vo",
"timestamp": "2011-01-13T17:34:10",
"content": "@Jake, there is a lot of reaons why it would be a LOUSY job for someone. If he wanted to quit that his business, no need top jump on him based on susumptions without any info to back him up.It is a hack, a tree hack…he hacked a tree, maybe even literalyNow how long before the trolls complain about a lck of an arudino though if he made one out of wood it should entitle him emperial hacker for life",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303647",
"author": "Richard",
"timestamp": "2011-01-13T20:47:14",
"content": "That is one hell of a sweet build… :-)Shame he’s on the wrong side of the ditch because I could play it, even if he can’t.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303887",
"author": "strider_mt2k",
"timestamp": "2011-01-14T00:55:20",
"content": "Oh…OH!Do Anegada Da Vida!!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303889",
"author": "strider_mt2k",
"timestamp": "2011-01-14T00:57:19",
"content": "http://www.youtube.com/watch?v=0PyBWLALFLQ",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305457",
"author": "j s",
"timestamp": "2011-01-15T17:52:27",
"content": "I just happen to know that this guy is directly related to a world famous mute maker- his father, who makes TrumCor mutes.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,303.031318
|
||
https://hackaday.com/2011/01/12/hold-fast-and-max-features-on-a-digital-caliper/
|
Hold, Fast, And Max Features On A Digital Caliper
|
Mike Szczys
|
[
"Tool Hacks"
] |
[
"digital caliper",
"fast",
"hold",
"rj-11"
] |
While adding an RJ-11 connector to his digital calipers [BadWolf] slipped, shorting out a pin and
accidentally discovered new features
. He intended to
add a port for reading measurement data electronically
, but after the slip-up an ‘H’ appeared on the LCD screen and the measurement was frozen at the same number. At first it seemed like he may have killed the device, but this is actually a hold function. A little bit more playing around and he discovered that a combination of button presses can also enable a fast function which speeds up the rate at which the display changes its reading. There is even a max function that only updates the display if the reading is higher than any previously displayed measurement. These are nice features which he uses by connecting a momentary push switch between two of the output pins, details we gleaned from the annotated video after the break. He doesn’t say which pins work for him, but we’d bet one of them is the ground pin on the port, and the other is one of the two data pins. Do some investigating with your own calipers and let us know what you find in the comments.
[youtube=http://www.youtube.com/watch?v=-C9CS72SFM0&w=470]
| 67
| 50
|
[
{
"comment_id": "302477",
"author": "wvdv2002",
"timestamp": "2011-01-12T14:33:01",
"content": "Isn’t it much more handy to have a ‘hold minimum value’ function for a caliper? If you want to measure the diameter of an object for example?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6041569",
"author": "SomeGuy",
"timestamp": "2019-03-30T03:49:59",
"content": "Yes.but the max function is good for ID measurement. sometimes you have to wiggle one end a little to get the ID",
"parent_id": "302477",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "302484",
"author": "Hackius",
"timestamp": "2011-01-12T14:53:31",
"content": "Oh man that fast mode is something I’ve desired for a long time",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302485",
"author": "Khordas",
"timestamp": "2011-01-12T14:54:23",
"content": "I really hate the way manufacturers do this thing where they disable features in order to be able to sell an ‘upgraded’ model to you later. Good thing there are hackers.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6041583",
"author": "darkshadowsx5",
"timestamp": "2019-03-30T03:52:19",
"content": "you dont even see buttons for these features on $200 Mitotoyo calipers.their just hidden features.",
"parent_id": "302485",
"depth": 2,
"replies": [
{
"comment_id": "6041633",
"author": "darkshadowsx5",
"timestamp": "2019-03-30T04:03:01",
"content": "disregard that comment..",
"parent_id": "6041583",
"depth": 3,
"replies": []
}
]
}
]
},
{
"comment_id": "302489",
"author": "jkdrum",
"timestamp": "2011-01-12T15:10:52",
"content": "Sometimes those “features” are masked off because it does not work correctly. Or because that same uC was used in another design. Or it is something the engineer felt like putting in for test purposes in a later design. They are not necessarily trying to cheat you.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302492",
"author": "Brian",
"timestamp": "2011-01-12T15:14:03",
"content": "Good hack! Looks like it might be a good place to use a surface mount switch like the ones used to open CD drives. I could really use the fast mode.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302500",
"author": "Brian",
"timestamp": "2011-01-12T15:27:25",
"content": "Researching further it seems like you could add the switch to the cover and have spring contacts to the connector. This way you could slide the data cable in the slot. Look at this hack for a better visualhttp://www.robotroom.com/CaliperCapacitor.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302501",
"author": "Mike",
"timestamp": "2011-01-12T15:28:23",
"content": "It is Pin2 and Pin4 (i have the same Digital Caliper)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302511",
"author": "tromano32",
"timestamp": "2011-01-12T15:45:30",
"content": "A nice surface mount switch on top would be a good upgrade and try to hide all the wires inside.. maybe even use magnet wire to save space…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302528",
"author": "meh",
"timestamp": "2011-01-12T16:09:55",
"content": "Oh awesome. I coincidentally ordered these exact same calipers online a few hours ago before i read this! Happiness! ^_^",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302531",
"author": "X-log",
"timestamp": "2011-01-12T16:18:59",
"content": "Tried it, from my brief experimentation, there are 4 modes (mind you, my calliper is a bit different, letters are shown not at the top of LCD, but on the left side):1) regular2) fast function/hold3) min hold4) max holdTo switch from mode 1) to 2) short pins 2 and 4, while calliper is in hold mode(H letter on lcd), short pins 2 and 4 again, this will put calliper in mode 3), do it again if you want to switch to mode 4). If calliper is in “measurement” mode (showing INC on LCD) and you short 2 and 4, calliper goes to mode 1).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302539",
"author": "TheBadWolf",
"timestamp": "2011-01-12T16:34:00",
"content": "W00TI am featured ^^Hou-ray!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302541",
"author": "Giorgos Lazaridis",
"timestamp": "2011-01-12T16:35:33",
"content": "I had done some good research for this subject a time ago. I had reverse-engineered the protocol for 2 different Chinese-calipers, one is absolutely similar to this. Check it out:http://pcbheaven.com/exppages/Digital_Caliper_Protocol",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302542",
"author": "JC",
"timestamp": "2011-01-12T16:36:26",
"content": "Maybe I’m old-school, but I really prefer the dial calipers. It’s nice to see the rate of change on an analog device.Nice hack though!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302546",
"author": "Marto",
"timestamp": "2011-01-12T16:45:53",
"content": "Now this is a nice simple hack. Just did this to a set of calipers using a tiny momentary switch from a bust mouse, It works well. The control wires are the easy to solder and access ones right under the cover and the ones you want are the 2nd and 4th when looking at the front of the calipers as normal. Happily it stores your settings when powered off so only issue is that you need to turn the “fast” mode off to calibrate/zero.Well done!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302554",
"author": "octel",
"timestamp": "2011-01-12T17:05:10",
"content": "Is the fast mode less accurate in any way?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302576",
"author": "TheBadWolf",
"timestamp": "2011-01-12T17:13:39",
"content": "@ OctelAbsolutely not,it just change the refresh rate.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302592",
"author": "JFS",
"timestamp": "2011-01-12T17:33:43",
"content": "Scott Shumate made a nice digital readout using these calipers (and others). There is a wealth of information on the protocol, and connections on his websitehttp://www.shumatech.com, and the Yahoo grouphttp://groups.yahoo.com/group/ShumaTech/No affiliation, other than I have one that I use on my milling machine.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302598",
"author": "Techmonkey",
"timestamp": "2011-01-12T17:40:56",
"content": "The slower refresh rate is probably to save power. As to not installing the other features, there are probably only a couple manufacturers of the ICs used inside calipers.They probably don’t activate the extra features because the extra switches may not fit in the internal volume of the designed case or they are trying to get a lower selling price to undercut competitors.I work for a major telecom equipment company in R&D. You would not believe all the features that we cut out just because the company does not want to support them, or we have to rush a design out the door.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302607",
"author": "paul",
"timestamp": "2011-01-12T17:49:38",
"content": "good deal! I need to get a digi one anyway. I’m to lazy to read the manual ones, and digi is much faster, plus I’m practically blind so the big lcd is easier for me. I wish there were more photos of the insides, it would help but whatever. since you’re here bad wolf what exact make/model is this?side note. this is the first time I’ve seen a hack hosted on facebook! at first I thought I would have to be signed in to see it, glad to see that’s not the case.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302609",
"author": "thebulbguy",
"timestamp": "2011-01-12T17:52:03",
"content": "I like that merc stealth in the background – I’ve got the same one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302617",
"author": "brad",
"timestamp": "2011-01-12T18:02:51",
"content": "psh, forget the hack, nice keyboard!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302629",
"author": "Brian",
"timestamp": "2011-01-12T18:32:21",
"content": "Anyone know the effect of fast read? Perhaps it shortens battery life?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302635",
"author": "Bob",
"timestamp": "2011-01-12T18:38:48",
"content": "No luck with my Chinese caliper. 1 and 4 cause a zeroing, but that’s it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302637",
"author": "TheBadWolf",
"timestamp": "2011-01-12T18:39:51",
"content": "@ Bradthanks for the keyboard ;p it’s a Steelseries Mercstealth,best keyboard i ever laid my hands on ;p@PaulIt’s one I’ve ordered a long time ago from Princess Auto. It has absolutely no model number or company name. but here’s a link to it on Canadian Tire:http://www.canadiantire.ca/AST/browse/6/Tools/SpecialtyTools/MechanicsSpecialtyTools/PRD~0251174P/Pied%252B%2525E0%252Bcoulisse%252BPowerbuilt%252Bnum%2525E9rique%25252C%252B6%252Bpo.jsp?locale=fr_CA",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302652",
"author": "Hackius",
"timestamp": "2011-01-12T18:56:27",
"content": "Here it is on dealextreme:http://www.dealextreme.com/details.dx/sku.2306Seems to be that exact caliper model. I just ordered one and will report back.My guess is that fast mode will eat your battery faster.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302669",
"author": "TheBadWolf",
"timestamp": "2011-01-12T19:06:47",
"content": "@ Hackiusnot the same but very close indeed!Can’t wait to see if it works!G-Luck!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302673",
"author": "Bob",
"timestamp": "2011-01-12T19:10:50",
"content": "Can anyone compare these to a “normal” caliper to see if the accuracy is up to par?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302704",
"author": "rallen71366",
"timestamp": "2011-01-12T20:03:06",
"content": "@jkdrum – I used to work for a major test equipment manufacturer, and several of our models had serious upgrades that consisted of accessing a settings mode through the front panel, and turning on the options. I’m talking $30K worth of “soft options”. It became a game of customers trying to find the codes, and engineering changing them.There were some real ethical questions involved, like “Our records don’t show that he should have this $10K option, do we turn it off? Are our records correct? Are we going to be charged with a felony for stealing functionality from him?”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302716",
"author": "TheBadWolf",
"timestamp": "2011-01-12T20:27:36",
"content": "@ rallen71366where did you worked at?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302762",
"author": "Jordan",
"timestamp": "2011-01-12T21:41:55",
"content": "“I like that merc stealth in the background – I’ve got the same one.”“psh, forget the hack, nice keyboard!”“thanks for the keyboard ;p it’s a Steelseries Mercstealth,best keyboard i ever laid my hands on ;p”Good to know I’m not the only one who thought the keyboard was cool. does it light up inside, by any chance? where can I get one?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302787",
"author": "echodelta",
"timestamp": "2011-01-12T22:31:35",
"content": "I thought mine was a battery eater, now I know. I don’t use it very often , it’s always dead. My first hack will be to put a AA cell set on it, to hell with sleek tiny BS.A laptop should run for a week. Portable CD for 25-50 CD’s. Camera for a weekend tour away from it all. This should run for a year.It’s just a racket with the battery folks when they tiny out anything. You pay more for less. If a new model uses less power, then wimp out the power supply!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302802",
"author": "David",
"timestamp": "2011-01-12T22:49:20",
"content": "Just tried it on my “Insize” 6″ digi cal. Yup works just the same (pin 1 and 3 i think from left to right). I wouldnt doubt if there is a Chinese manufacturer that sells these as “buy 100k units, and we’ll put your name on it” type of deals. Great hack/discover! Tho I’m old fashion for being so young, so I still trust the ol’ dials much more than the digi’s.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302806",
"author": "sneakypoo",
"timestamp": "2011-01-12T22:55:39",
"content": "Sweet. Worked a treat on my no-name caliper I bought here in Sweden years ago. The fast update is a very welcome upgrade. Only problem is that I have already soldered an AA battery to it and then taped the sucker right over the cover. I’ll have to do something about that.Oh and btw, adding an AA to these things is great, haven’t changed the battery in years and I’ve forgotten to turn it off for days plenty of times.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302820",
"author": "zool",
"timestamp": "2011-01-12T23:14:29",
"content": "looks like a mouse button",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302880",
"author": "Jake H",
"timestamp": "2011-01-13T00:27:55",
"content": "This is EXACTLY the sort of thing I come here for!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302952",
"author": "TheBadWolf",
"timestamp": "2011-01-13T01:58:52",
"content": "@ jordanKeyboard is from FutureShop.ca@ZoolMouse button it is,scavenging is my prime hobby@Jake HHappy to hear thisGuys,I’ve updated the post,here it is now:http://badwolf.hackhut.com/2011/01/12/digital-caliper-hackmod/Enjoy and I STRONGLY encourages you to create an account on hackhut,it’s freakin amazing!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302998",
"author": "cboy2us",
"timestamp": "2011-01-13T02:45:19",
"content": "My set has the battery door that opens by sliding to the right instead of down, and the mm/inch button is over the zero button instead of the power button, and it doesn’t work for it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303014",
"author": "paul",
"timestamp": "2011-01-13T03:20:11",
"content": "thanks BadWolf! We’re tryin hard to be what hackers want.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303026",
"author": "vtl",
"timestamp": "2011-01-13T03:42:19",
"content": "I bought one of these off ebay a few weeks ago. If you look at the intructions they include diagrams for the upgraded model which has a ‘mode’ button. I’m assuming you’re just implementing this switch?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303032",
"author": "vtl",
"timestamp": "2011-01-13T03:58:24",
"content": "Mines this one:http://cgi.ebay.com.au/6-150-mm-Digital-vernier-Caliper-gauge-micrometer-15cm-/290513389916?pt=AU_Toys_Hobbies_Radio_Controlled_Vehicles&hash=item43a3f2895cTried shorting out the pins with some tweezers, got nothing",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303033",
"author": "hammy",
"timestamp": "2011-01-13T03:59:09",
"content": "@wvdv2002 maximum level would be handy for doing internal pipe diameters etc",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303058",
"author": "vtl",
"timestamp": "2011-01-13T04:39:18",
"content": "Looks like mines a little different, the 4pin port is just a serial port (see earlier hackday post of someone talking to it with a micro). The mode button that exists on the higher end models is still in my model too, theres just no hole in the case for the button but the button contacts still exist on the pcb. All youd need to do is cut out the square and add a button.Heres a pic:http://i69.photobucket.com/albums/i58/m249_saw/P1010367.png",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303084",
"author": "Bill D. Williams",
"timestamp": "2011-01-13T05:34:53",
"content": "Trust me – those calipers are garbage. If anyone came into my shop using them, I’d laugh my butt off.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303104",
"author": "Mike",
"timestamp": "2011-01-13T06:40:53",
"content": "Interesting.On mine, Pins 2 and 4 cycle through a few modes.Short once and you get hold (H displays). Press zero in this mode and I get “INC” displays and it’s in fast mode. Zero toggles between H and INC.If you short 2 and 4 again, it goes back to normal mode.Now from normal, if you short 2 and 4 twice, you still get H. There is no display change between mode 1 and mode 2. The display is held. Press zero in this mode and “INC” shows and the display only shows the minimum reading. Hitting zero hold, and hitting it again resets the display to the current position, again in minimum mode.If you short 2 and 4 three times I get “H” and “SET”. The display is held. Hit zero and you get “INC” and “SET” and the display shows the maximum reading. Hitting zero again holds the reading and again will reset the display to the current position and return to maximum mode.Shorting pins 3 and 4 seem to be the same as hitting the zero button.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303131",
"author": "vtl",
"timestamp": "2011-01-13T07:33:15",
"content": "Hmm turns out that extra button I discovered isnt a mode button, just another duplicate mm/inch button. Guess its impossible to get the extra functions with the caliper with the serial port",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303207",
"author": "Spork",
"timestamp": "2011-01-13T09:30:52",
"content": "@Bill D. WilliamsTrue, they’re no Mitutoyo, but I’m sure they’re more reliable than a tape measure or ruler.We’re not talking about a shop making parts to spec here, just hobby work =]",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303415",
"author": "TheBadWolf",
"timestamp": "2011-01-13T16:29:29",
"content": "@Bill D. Williams & SporkI’m actually a mechanical engineering tech,and we compared those to $200 mitutoyo ones, and they hold the same tolerance if you don’t play too hard with them. Also,don’t forget that a digital caliper,whatever the brand is 90% of the time a 0.005″ precision due to it’s manufacturing process.If we look at 90% of the regular milling jobs,they are std +- 0.010″ so we’re good to go ;p",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303873",
"author": "Justblair",
"timestamp": "2011-01-14T00:44:29",
"content": "I have a similar looking set of calipersBranded “Powerfix(R) ELECTRONIC DIGITAL CALIPER” on the ruler.“Model No: Z22855Version: 07/2008Battery Type: 3v-CR2032OWIM GmbH & Co. KGStiftsbergstraβe 1D-74172 Neckarsulm”On rear.Clearly similar construction to the others, Shorting pins 2-4 enters additional measurement modes like Mike describes but the lcd dislay does not appear to have any of the additional symbols.Great mod though. I will find a micro-switch and add a port. The pin spacing looks like standard 2.51mm to me (I would measure it if I had a second caliper set!) I reckon that female headers will fit in there perfect assuming that there is data lines out…Great mod!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304077",
"author": "Garbz",
"timestamp": "2011-01-14T04:46:57",
"content": "@Bill D. Williams No tool is garbageThe tool either is good enough for the job or not good enough for the job. These cheap digital calipers are a huge and cheap upgrade on using a ruler. Would I use them to build a spaceship? No.I take it the only people who come into your shop are spaceship builders right? And every single customer you have demands a sub 1thou tolerance on everything right? Right?Thought so. Allow me to laugh my butt off at your suggestion that I should spend $10 the amount of money I did and gain absolutely nothing from it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304417",
"author": "element_leader",
"timestamp": "2011-01-14T12:30:19",
"content": "That looks like a caliper I have. It has been used daily in an industrial environment for over 2yrs. Calibration checked by outside firm every 6mo.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,303.368616
|
||
https://hackaday.com/2011/01/11/intro-to-circuit-bending/
|
Intro To Circuit Bending
|
Joseph Thibodeau
|
[
"digital audio hacks",
"Featured",
"how-to",
"Musical Hacks",
"Toy Hacks"
] |
[
"circuit bend",
"dac",
"pwm",
"synthesizer",
"wavetable",
"yamaha"
] |
Electronic musical instruments are a lot of fun for a hacker because, with a small palette of tools, know-how and curiosity, they are easily modified. As with any hack, there is always the chance that the subject will be ruined, so it’s not necessarily worth the risk to muck about inside your thousand-dollar pro synthesizer. Luckily for all of us, there are shovel-fulls of old electronic musical toys littering the curbs and second-hand shops of the world. These fun little devices provide ample opportunity to get familiar with audio electronics and circuit bending techniques.
A note on definitions: the term “circuit bending” can be synonymous with “hardware hacking” in the world of audio electronics, and we have seen some debate as to which term is better suited to a given project. We welcome you to share your viewpoints in the comments.
Keep reading to get started.
Materials
So, you’ve heard of circuit bending and you want to give it a try eh? Well for this introduction, you’re going to need at minimum the following materials:
electronic musical instrument (the bendee) with batteries or AC adapter
alligator clips (for temporary connections)
various resistors and/or a potentiometer
ears
and it’s a great help if you also have:
oscilloscope
bench-top power supply
camera
For our first attempt at circuit bending, we will be using a Yamaha PSS-14 keyboard. We found it by the side of the road, abandoned and lonely and without a friend in the world. Like mad scientists conducting mad genetic experiments on lonely abandoned animals, we will rebuild this poor creature to be better, stronger, and stranger than before!
Background Research
Thanks to our high-fallootin’ academic standards, we’ll start by researching a little bit about the keyboard in question. The more adventurous among you can skip this step and dive straight into the fun part. From
Yamaha’s site
, we can see that this model sports “100 Advanced Wave Memory Voices”–that’s their hilarious marketing term for “100 Pre-written Sound Files”–making this what’s known as a “Wavetable Synthesizer”. Wavetable synthesis is a very easy and cheap way to create sounds because you can simply copy a bunch of sounds to the memory of the chip and then read through them sample-by-sample, changing the sampling rate to change the pitch (or having separate samples for each pitch value, depending how much memory you have to play with).
Further research reveals that we’re not the first to circuit-bend this particular keyboard.
This example
and also
this one
show some interesting possibilities, and by the end of this article we’ll have a better idea of what they’ve done. But enough talk, let’s crack this baby open!
Here we see the PSS-14 in its original state: operational, but missing the case screws (it was held together by duct tape when we found it). Perhaps a previous owner did some exploration of their own?
The preprogrammed songs cover all the major categories of music: Memories, Cool&Hot, Favourites, Fun Time. When we were younger we used to listen to Cool&Hot music all the time, but then it got mainstream so now we’re mostly into the underground Memories scene. You haven’t lived ’till you’ve heard the new remix of “Gallant Pig”.
There are twenty keyboard-controlled voices to choose from, most of which sound about the same. The volume controls seen here make a very loud “bongo” sound when you press them, no matter if the volume’s as low as possible.
Look Under the Hood
Clearly this thing could be better, so let’s open it up and see what we can improve about its operation.
The circuit board under the hood is pretty sparse, which is somewhat unsurprising seeing as it’s a wavetable synth and therefore most of the fun stuff is taken care of inside the microcontroller seen on the right. If you can find old electronic musical toys from before the digital era, you have access to a lot more of the nitty-gritty sound generation. Unfortunately those are much harder to find on the side of the road.
On the left side of the circuit board we can see the clearly-marked Vcc and GND connections, which would be easy enough to find from the battery terminals. The keyboard takes 4 AA batteries, which means it runs on a 6-Volt supply. We didn’t have the AC adapter for this keyboard so we’ll run it off of our bench-top power supply for now.
This hardly needs to be said but BE REALLY CAREFUL if you are going to use an AC-powered device. The bench-top supply we’re using has a current-limiter but a wall-wart transformer can push dangerous crowds of electrons through your body, which we understand to be an uncomfortable experience.
On the right, we can see a bunch more resistors and–the holy grail–a clock component (it’s the blue blob to the left of the IC)! On digital synthesizers this is generally the main source of fun.
In the middle of the board there is a cluster of capacitors and what looks like a multi-transistor package. When we turn the board around and start probing, we’ll figure out what this is all about.
The soldered and printed side of the circuit board is much more interesting to look at. The dark patches that you see are conductive ink–this is a really common and cheap sensor technology used in everything from the humble NES controller to high-end Roland electric pianos. It’s a form of what’s known as a
force-sensing resistor (FSR)
and it suffers from major nonlinearity, hysteresis and repeatability. On the other hand, it’s dead easy to implement and it can be printed onto a board.
On the underside of the CPU we can start to characterize the pin functions. A lot of the pins go out to the various keys and buttons. A lot of those transistors that we saw topside are dedicated to this key matrix, too.
Scope it Out
Upon further investigation the button/key states are time-division multiplexed onto pulse wave signals based on a global excitation, illustrated here.
According to this fellow
who lists a circuit-bent PSS-15 (same model as this but with a silver control panel), connecting part of the audio output to the keyboard matrix returns can re-trigger buttons or keys to make “loops”. Very interesting, seeing as:
The keyboard uses a PWM-based DAC scoped here in comparison to the audio output further down the line. Again this is a very cheap technology (you can make one for your arduino pretty easily) and you can get a
simple explanation here
. Right off the bat we can see that a disadvantage to this technology is that its transition times between various voltage levels might be difficult to control, possibly leading to distortion. That aside, it will be interesting to connect the PWM DAC output to one or more of the keyboard matrix returns.
Here is a closeup of two interesting “hack points” on this keyboard. We’ll change the resistors on the right to see what it does to the signal, and we’ll change up the existing 8MHz clock for a different one.
The sine wave oscillations of component CL1 can be scoped to show a transformation into square wave, which we can safely assume is driving the operations of the microcontroller.
Modifying the Circuit
It just so happened that we had a spare 3MHz oscillator sitting around, so let’s find out what happens when we drive this device at 3/8ths of its normal speed.
[youtube=http://www.youtube.com/watch?v=ID6JdjH8gk4&w=470]
A quick and dirty soldering job gives immediate results. In the video you can hear the results with the new clock and changing the resistor value at the PWM output–overdrive city!
[youtube=http://www.youtube.com/watch?v=rtJtg8AhMFY&w=470]
Furthermore, by patching the audio output to parts of the keyboard matrix, we can create the “loops” as discussed eariler.
The results thus far have been, well, a little underwhelming. We can make the sounds slower and we can make little loops, and we’ve learned a little bit about consumer-level electronic toys. Still, at this point we were hoping to have unlocked some seriously badass digital fury.
Serendipity came to our help at this point, and an inadvertent touch of the oscillator legs produced the righteous vibes we’d been banking on!
[youtube=http://www.youtube.com/watch?v=BCYwfa5n4lE&w=470]
The sounds that came out of this thing were incredible. Somehow, after assembly, this type of thing was happening at startup and it’s now only about a one in ten chance that the keyboard boots properly. Even then it’s at running 3/8ths speed… except some of the time, somehow, it properly adapts the PWM output so that despite the underclocked CPU the wavetables read at the original sampling rate. Who knows what is going on that ASIC.
What to do with it now?
At this point in our circuit-bending adventure we’ve characterized the operation of the device and found a couple of fun bends. Where to go from here? Well, one option would be to make the modifications permanent with the addition of pots, buttons, patchbays and what-have-you so that the end result is a sleek and performable instrument. We’ll be saving for a later date. Since, as we mentioned at the beginning of the article, it is quite possible to destroy a hacked piece of electronics simply by virtue of the stress caused by the modifications themselves, we’re going to finish this bend by recording the myriad new sounds that the keyboard produces, and composing a short celebratory piece of music:
https://hackaday.com/wp-content/uploads/2011/01/yamahapss14sequence.mp3
Summary
While you may not have this exact toy keyboard at your disposal, the same techniques and methodology used here can be applied to many other audio devices. It’s simply a matter of
Taking your time
Understanding the technology
Characterizing the circuit
Experimenting
At the end of the day it’s not really that difficult to get started at this sort of thing–hopefully the concept of circuit bending has been demystified for some of you. This isn’t to say that circuit bending can’t go deeper than shown here, as this only shows the most elementary steps. And the complexity of the device you’re working with greatly affects the types of bends you can do–for example, the
TR909
has many timing circuits that can be played with in much the same way as our Yamaha. We’ve recommended it and we’ll recommend it again, but for further reading be sure to check out Nick Collins’
Handmade Electronic Instruments
.
It contains a good section on toy hacking, and it’s generally a very good read.
If you enjoyed this introduction and want us to write further articles exploring different parts of circuit bending (or audio hacking in general), please let us know in the comments.
| 54
| 50
|
[
{
"comment_id": "301851",
"author": "Paul Potter",
"timestamp": "2011-01-11T23:21:46",
"content": "I love circuit bending. I did a Speak & Maths a few years ago. Great article, and love that tune at the end. Instant Aphex Twin or Squarepusher. More please.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301873",
"author": "NatureTM",
"timestamp": "2011-01-11T23:37:03",
"content": "Haha, I like how you preempted the debate on the terms “circuit bending” vs. “hardware hacking.” It seems to be argued about every time. I would say circuit bending is a subset of hardware hacking. Still, I can’t help but picture a kid touching wires randomly around a circuit board when I hear “circuit bending.”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301878",
"author": "Ratty",
"timestamp": "2011-01-11T23:43:10",
"content": "Mahalo.com has blocked the first video, whoever went after them last time they started doing that didn’t do a good enough job, it seems.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301900",
"author": "Nemo",
"timestamp": "2011-01-11T23:56:28",
"content": "Great intro to circuit bending and that tune at the end was unexpectedly good!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301905",
"author": "Gonzalo",
"timestamp": "2011-01-12T00:01:12",
"content": "Nice introduction to circuit bending! It would be nice to replace the synthesizer IC with a fast, programmable MCU, and make it a drum machine.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301911",
"author": "Marco",
"timestamp": "2011-01-12T00:08:13",
"content": "Article starts out slow and then quickly jumps to conclusions. I don’t really care where you found the instrument, instead I would have liked to know how you found the PWM pins, figured out the keyboard matrixing etc.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301919",
"author": "aztraph",
"timestamp": "2011-01-12T00:25:04",
"content": "I agree with Nemo. good introduction, gives a primer for those interested in hacking the hardware in a musical keyboard. this is one step closer to shutting me up for good. i would add one thing to the list of requirements: MUSICAL TALENT!all this effort if you have no ear for music is a waste of time. i was surprised at the tune as well, it had some musical quality, i would encourage the person who made it to do more, maybe study music styles, etc.i know this opinion of mine will no doubt enrage more than a few people, if so i apologize, but that’s all it is, OPINION.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301922",
"author": "81rdm4n",
"timestamp": "2011-01-12T00:32:01",
"content": "Tune at the end was great! Circuit bending is loads of fun, also look into simple toy voice recorders, they do some crazy stuff!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301933",
"author": "jeditalian",
"timestamp": "2011-01-12T00:45:26",
"content": "circuit bending = the very beginning of hacking, as far as i’m concerned. my favorite pastime from ages 2-infinity",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301937",
"author": "jeditalian",
"timestamp": "2011-01-12T00:52:46",
"content": "i like to experiment with the circuit between the guitar jack and the amp, which, in my case, is just two wires so i will throw some random shit in there to see if i can make it sound better, or make a new effect. idk what’s up with my guitar though sometimes i have electrified strings that shock you. probably because of my lack of observation of polarity",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301938",
"author": "osgeld",
"timestamp": "2011-01-12T00:53:05",
"content": "yea stoped reading after your parent company blocked its own contentstupid",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "302061",
"author": "Caleb Kraft",
"timestamp": "2011-01-12T03:21:40",
"content": "@ALL about the video,It blocked, then unblocked… now it looks like some of you are seeing it blocked again? …grrr :/",
"parent_id": "301938",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "301956",
"author": "jeditalian",
"timestamp": "2011-01-12T01:19:48",
"content": "trudat",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301964",
"author": "aggaz",
"timestamp": "2011-01-12T01:28:20",
"content": "Nice sounds!I think that if you are joining random contacts to random components, you should call it circuit bending.If your modifications are not (totally) random, you can call it hardware hacking.I would like to read more (and more detailed) articles like this!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302035",
"author": "Peanut",
"timestamp": "2011-01-12T02:49:08",
"content": "I have an old CASIO keyboard that uses the same conductive ink for its keys, but some seem to have worn out….. any ideas where i could buy some or if there’s some other sort of conductive material that would work instead??",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302074",
"author": "hammy",
"timestamp": "2011-01-12T03:44:25",
"content": "got an old 1980’s Kids Casio keyboard with inbuilt beat generator; gonna fire it up when I get home and start prying!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4639793",
"author": "BabyChoker666",
"timestamp": "2018-06-19T12:28:05",
"content": "Any news on that? I know I’m seven years late, but who knows.",
"parent_id": "302074",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "302086",
"author": "zool",
"timestamp": "2011-01-12T03:54:03",
"content": "most of what you want to bend is usually the clock and rom if there is onemost of the time people go overboard though and end up with it brokeneven with modest bending it can eventually break itmy advice would be to bend it and take samples of what you didalso use batteries insted of adapter if you can",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302087",
"author": "D",
"timestamp": "2011-01-12T03:54:29",
"content": "circuit bending involves some jackass who takes a bunch of his child’s old toys and randomly shorts out and applies excess voltage to them in an effort to make horrible distorted noises and calling this sucess",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302090",
"author": "TheMoogle",
"timestamp": "2011-01-12T03:57:58",
"content": "What D said. Circuit bending involves some jackass destroying vintage technology in order to make something that sounds like shit.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302152",
"author": "Sodor",
"timestamp": "2011-01-12T05:37:05",
"content": "anyway hardware hacking or circuit bending both means patience",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302156",
"author": "osgeld",
"timestamp": "2011-01-12T05:42:16",
"content": "working now Caleb",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302321",
"author": "Whatnot",
"timestamp": "2011-01-12T09:47:09",
"content": "If the circuit blows you can always bang the thing on the table or break it and make scratch noises with the parts, seems awful noise is the purpose anyway.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302350",
"author": "Mudo",
"timestamp": "2011-01-12T10:52:53",
"content": "…More please!…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302394",
"author": "echodelta",
"timestamp": "2011-01-12T11:57:02",
"content": "Moist fingertips! Defining this is hard but resistance changes this way is the way to start. Then wire in a high resistance pot. Not rewired but bent.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302473",
"author": "blue carbuncle",
"timestamp": "2011-01-12T14:12:47",
"content": "Peanut: Check out the liquid wire from thinkgeek.com then find a toothpick and some patience ;) I hope this is the right kind of contact I am thinking about. You may be able to get by with dielectric grease also. Casper electronics may have a good tutorial as well as Sailormouth.http://www.casperelectronics.com/andhttp://sailormouth.org/on getting keys working again-they are kinda the guys I follow. ALso check outhttp://weltenschule.de/TableHooters/instruments.htmlfor one of the most comprehensive histories and chip lists of all the lil dinky keyboards that we all love so much :) Just sad I have some more folks to do battle with at the thrift stores and yard sales, but always fun to see folks get into circuit bending :)THANKS CALEB AND CREW FOR THE ARTICLE :) MORE :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302590",
"author": "octel",
"timestamp": "2011-01-12T17:32:00",
"content": "@PeanutCar defogger/defroster repair kit — get it at any auto parts store.I’ve repaired dozens of TV remotes and game controllers throughout the years with this stuff.Radio shack also sells an overpriced “trace repair pen” that contains the same substance.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302639",
"author": "strider_mt2k",
"timestamp": "2011-01-12T18:42:11",
"content": "Really don’t understand the hate for circuit bending.Messing around with stuff to make it do other stuff is kinda like hacking, isn’t it?So what if you don’t like the noises they make?I’m sure some folks hate it when things are made to spew fire too.I’d just tell those folks not to look.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302682",
"author": "Eirinn",
"timestamp": "2011-01-12T19:29:47",
"content": "“hacking”, make something do something it’s not designed to do – circuit bending is just an artsy fartsy way of saying “hacking”.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302710",
"author": "Will",
"timestamp": "2011-01-12T20:14:07",
"content": "Audio circuit hacking is fun! I love how it suddenly, violently plunges the known into static random sequences of unknown. That’s the fun of it for me, not knowing exactly what’s going to happen. Each modified device has its own personality and style. Compare the Casio SK-1 with a Yamaha PSS series for example. Getting into a deep crash state can yield some of the most amazing sounds. Just don’t forget to hit record. Like the tunes and definitely want to see more content like this, particularly bridging the gap between “engineering” and “tweaking”, such as your analysis with the oscilloscope. Great stuff!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302782",
"author": "Alpha",
"timestamp": "2011-01-12T22:26:22",
"content": "“A note on definitions: the term “circuit bending” can be synonymous with “hardware hacking” in the world of audio electronics”.WTF??!! Are you kidding me?Circuit bending is based on chaos. Some kid licks his fingers then fondles the innards of his speak-n-spell to see what kind of unique noises come out. If it makes a cool sound, he or she may add switches between these points so they can be accessed later, while performing. Some circuit benders even create external patch points instead of switches. The possibilities are virtually limitless, and circuit bending is pretty cool, but it’s not anything like hardware hacking. Also, circuit bending is typically performed on low-end/toy instruments. “Circuit bending” expensive professional instruments, such as vintage synthesizers/drum machines, is called Butchering, and it’s far less cool.Hardware Hacking, in the audio electronics world, is a skill requiring knowledge and discipline. The goal is not to simply make the instrument sound unique by randomly connecting points within the instruments circuitry. Hardware hacking begins with a deep understanding of each circuits function. Once the circuit is understood, the hacker figures out how he/she can add established features and familiar parameters to expand the flexibility of the instrument. An example would be to add an LFO to an analog synthesizer which does not offer this feature natively. Another popular hardware hack or mod is to make an instrument modular via patch points. While circuit bending would be content patching any point within the circuitry to any other point as long as the resulting sounds are interesting, hardware hackers have a more disciplined approach. For example, a hardware hacker would add patches to practical points, such as inputs and outputs to and from VCO, VCF, VCA, EG, LFO … etc. Modding in this way allows another musician who may not understand electronics but is familiar with analog synthesis to know how to utilize these new patch points and/or new parameters based on their labels.Please, you guys, don’t get it twisted.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302808",
"author": "Rust",
"timestamp": "2011-01-12T22:57:19",
"content": "I’d like to see more of what the oscilloscope can do and more detail on how it was used in this hack.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302856",
"author": "wouter",
"timestamp": "2011-01-12T23:58:56",
"content": "I love this hack! Might do something similar as an addition to my other /to-build/ list.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303371",
"author": "blue carbuncle",
"timestamp": "2011-01-13T14:39:30",
"content": "@Alpha knowing the nomenclature doesn’t change anything. There are plenty of “hackers” that are posted on here daily that don’t know electronics so they use an arduino. Likewise there are many circuitbenders that use 555 timers different and crystals to add sequencing or change the system clock. It all sounds pretty twisted…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303457",
"author": "Alpha",
"timestamp": "2011-01-13T17:22:20",
"content": "@carbuncle I agree. Knowing the nomenclature obviously doesn’t make one a hacker. Hackers create modifications which can be utilized by non-hackers who know the nomenclature. Circuitbenders create modifications that are, at best, difficult to define. Therefore, one can’t use a circuit bent instrument correctly or incorrectly because a system of rules of conduct or method of practice simply is not present.As for circuitbenders using 555 timers, crystals and the like, those guys are bordering on being true hardware hackers/modders, or at least “hardcore” circuitbenders.My point is: circuitbeding is in a class separate from hardware hacking, or at least a subset of hardware hacking. I’ll never understand why this line is blurred when dealing with audio. If one was to haphazardly play connect the dots inside of a computer just to watch the sparks and puffs of smoke, would that make them a hacker? While a circuitbender may not mind being called a hardware hacker, a true hardware hacker doesn’t care for the confusion. It’s like calling a janitor a chemist because he works with chemicals.I guess at the end of the day, bending/hacking/modding etc. are different flavors of renegade art forms. With that in mind, solidifying classifications and labels will always be a challenge. But, it doesn’t hurt to try.As for Arduino, I can’t knock them when used in a practical way. However, too many “hackers” use Arduino as a crutch, or a way to side step certain disciplines because the user is too lazy to learn. You really can’t blame the platform for that.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4344833",
"author": "Someone",
"timestamp": "2018-02-06T01:24:31",
"content": "Exactly! It’s like calling “IT” computer science or engineering. Same idea with the janitor and chemist…..",
"parent_id": "303457",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "303474",
"author": "Neighborhood Engineer",
"timestamp": "2011-01-13T17:37:22",
"content": "I love how some of you have such a harsh view on circuit bending in general. I guess you think unless if something is perfectly planned and organized, it’s blunt and brutish. I’m sorry that you can have no appreciation for sound collaboration and just having fun. I’m sorry that you feel the need to be right in every last little thing you do to boost a crippled self esteem. Most of all, I’m sorry that you fail to grasp what can be art, and that art is whatever you consider to be art. You don’t get to control the universe, and you don’t get to control peoples lives. Stop taking a dump on other people’s fun.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303597",
"author": "Jesse Adelman",
"timestamp": "2011-01-13T19:59:33",
"content": "Don’t forget the pioneers:Reed Ghazala:https://secure.wikimedia.org/wikipedia/en/wiki/Reed_Ghazala:)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "306285",
"author": "Reggie",
"timestamp": "2011-01-16T14:58:20",
"content": "I’d like to see more of an article on what they do to the harsh chaotic sounds to make them into something as listenable as the final tune, it’s all well and good making your synth sound like a car crash but making it sound good afterwards has got to be 50% of the skill :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "307395",
"author": "Joseph Thibodeau",
"timestamp": "2011-01-17T16:53:05",
"content": "@MarcoI could have gone into more detail about how I sussed out the keyboard matrix and DAC operation: my method was simply to scope each of the pins of the microcontroller and note down its probable function. The buttons were easy enough to trace visually as well, and the TDM encoding became apparent when several buttons would activate the same pin. The PWM DAC was the only part of the controller that was connected to the amplification stage of the circuit.@ReggieIn this instance I made sure not to overly process the sounds, just a little bit of cropping, and the arpeggio line at the end is the same sample pitch-shifted in much the same way as changing the clock speed. I wanted to leave the sounds mostly unprocessed to demonstrate that the output of the keyboard is fairly rad as it is.The major difference is really in the arrangement and mixing, which I couldn’t have done on the keyboard itself (the good sounds all came from crash-states). What I’m saying is, you don’t have to be a musical or DSP genius, trust your ears and have fun!FYI I used Renoise for sequencing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "308107",
"author": "Scissorfeind",
"timestamp": "2011-01-18T08:54:31",
"content": "I feel like to truly understand circuit bending, we deserve a discussion about the difference between music and sound art.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309479",
"author": "Chris",
"timestamp": "2011-01-19T23:23:47",
"content": "nice tune! see if you can make a longer one!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310775",
"author": "sean",
"timestamp": "2011-01-21T06:17:26",
"content": "I always thought the term circuit bending originally came from weird sounds you get physically bending/destroying the board and, was later adopted by hardware hackers",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "327059",
"author": "yan_g",
"timestamp": "2011-02-08T15:55:57",
"content": "great music!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "327064",
"author": "Hiram Maxim",
"timestamp": "2011-02-08T16:15:43",
"content": "This is a pretty good introduction. You know, the PSS-14 is one of those keyboards that I’ve seen many circuit benders dismiss as “unbendable.” Mentioning the oscillator is an important thing that circuit bending tutorials often forget…Try getting a PSS-130 and replacing the clock oscillator with a 555. Use 1K resistors and the smallest ceramic cap you can find. The range at which that chip is stable is unbelievable for a toy. You can do virtually anything with a much higher or lower clock speed that you can do with the original oscillator. It will eventually crash at the highest speeds the 555 can achieve, but I haven’t been able to crash it by underclocking at all.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4965633",
"author": "gabriel",
"timestamp": "2018-09-01T17:31:11",
"content": "Cool response! This is something I would love to try out. I am currently bending a kawai fs690 but I am having trouble manipulating the clock. NONE of the solder points will do anything but short it. I can only take the clock down by connecting my finger to it. Do you perhaps have any experience with the kawai keyboards?Thanks",
"parent_id": "327064",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "353147",
"author": "science and math",
"timestamp": "2011-03-09T17:18:54",
"content": "nice.Thanks for the circuit.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "375790",
"author": "bent",
"timestamp": "2011-04-07T21:58:45",
"content": "@D and @TheMoogle need a hug.My favorite thing about circuit bending is the act of taking a dated, often dejected piece of electronics and instilling a new life in it. I like the sound of digital chaos. I’m not saying everyone else should to, but by saying that those who do are jackasses, you become one yourself.Also, live noise shows are possibly the most cathartic activity possible.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "431810",
"author": "Rusha Paudel",
"timestamp": "2011-08-10T12:00:16",
"content": "bending/hacking/modding etc. are different flavors of renegade art forms. With that in mind, solidifying classifications and labels will always be a challenge",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "466766",
"author": "znatok",
"timestamp": "2011-09-28T21:06:10",
"content": "Thanks",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "2813117",
"author": "Nik",
"timestamp": "2015-11-28T03:17:25",
"content": "Don’t let the dinosaur’s and sticks in the mud discourage you. Don’t let their petty arguments about terminology, or the condescension in some of these comments dissuade or intimidate you. Their comments are inane.Using the same logic, someone could say that programming a Korg MS-2xxx or similar synthesizer isn’t “really” programming, because any idiot can plug a patch cable into two different ports and make a shitty sound. The thing they forget is that sometimes, you might also make a really kickass sound…Once upon a time, there were people that spent a great deal of time berating those that connected the familiar piano-style keyboard to a synthesizer.Screw anyone that tells you it’s garbage just because it isn’t done “right.” I’ve heard amazing patches written on an iPod touch in a DAW. One of the best bass drum sounds I’ve ever heard was an old metal water barrel barely modified and integrated into a drum kit. Conversely I’ve seen people spend thousands of dollars on synthesizers or other gear, and they only use presets because they can’t make a patch that sounds decent.Experiment. Play. Realize you will probably fuck up, and don’t be afraid to do so. Learn from your mistakes, and be careful.You’re creating potential tools here, that is all.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "3106638",
"author": "sean smith",
"timestamp": "2016-07-28T17:51:19",
"content": "Fascinating stuff, please keep me in the loop!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4400306",
"author": "BillSF9c",
"timestamp": "2018-03-07T01:13:15",
"content": "Hmm. I was hoping for advanced flexible pcbs.Audio? Then maybe warping a steel guitar string or string on a fret, or a musical saw. It sounded as if ine commenter had Jimmue Hendricks ir at least LSD in his mind… playing under the influence.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "5573123",
"author": "BD Sharma",
"timestamp": "2018-12-07T10:41:54",
"content": "What if key A and A major produces same sound together on pressing either in all octave.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,303.462382
|
||
https://hackaday.com/2011/01/11/scrolling-marquee-made-from-ge-christmas-lights/
|
Scrolling Marquee Made From GE Christmas Lights
|
Mike Szczys
|
[
"LED Hacks"
] |
[
"arduino",
"christmast lights",
"g-35",
"ge",
"marquee"
] |
[John Riney] picked up three strands of addressable Christmas lights and
used them to make a scrolling marquee
. You may remember that the
G-35 lights were hacked
at the beginning of December, and we saw
a project
or two that involved these fun toys.
In order to make the display [John] modified the original packing material to hold three strands in a six by eighteen grid for a total of 108 pixels. In the video after the break he points out one interesting feature of the strand that we don’t remember from looking at the original hack; each bulb’s address is not fixed, it can be set after power-up. This works the same way as sending color data, except that you just send the address. This makes controlling a grid like this extremely easy from a microcontroller programming standpoint. Once all of the addresses have dropped down the serial bus, you’re ready to start sending color and intensity data packets.
The setup is fast, bright, and beautiful, taking just three pins of an Arduino for control. The only thing holding us back from trying this ourselves is the $150 price tag. But that was before the holiday, and we have heard some whispers about closeout deals on this product.
[youtube=http://www.youtube.com/watch?v=WbtTBSTp0hk&w=470]
| 23
| 23
|
[
{
"comment_id": "301819",
"author": "Ben",
"timestamp": "2011-01-11T22:42:20",
"content": "It’s a pity, they are still that expensive!When I see these Christmaslight hacks I always have to think about a LED Qube made form them. Just hang them from a ceiling of a hall or something…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301822",
"author": "Terry",
"timestamp": "2011-01-11T22:42:52",
"content": "I’d love to play with these lights but the price is too high for me.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301834",
"author": "Gdogg",
"timestamp": "2011-01-11T22:55:47",
"content": "This was a cool hack. I read the entire thread at DIYchristmas, but unfortunately they didn’t sell those lights in Canada.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301839",
"author": "HackerK",
"timestamp": "2011-01-11T23:03:39",
"content": "@GdoggHave you confirmed they don’t sell those in Canada?If it is true, no wonder I can’t find them at the stores. >:(",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301929",
"author": "blinkybill",
"timestamp": "2011-01-12T00:44:00",
"content": "when you get around to mounting them up in a final enclosure – it will help to put a divider to stop diffusion / spill between the pixels.Great project.thanks",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302092",
"author": "qwertyuiop",
"timestamp": "2011-01-12T04:01:40",
"content": "when will we see QVGA or ultimately 720P Video being shown on a bunch of these sets? It seems they are easy to drive. I mean at QVGA that’s only 76800 pixels and at a lowest price of $55 a set that’s only $84,480.00",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302187",
"author": "Gdogg",
"timestamp": "2011-01-12T06:46:06",
"content": "@HackerK I haven’t searched thoroughly but I did enough googling to convince myself I wasn’t going to find any.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302478",
"author": "Skully",
"timestamp": "2011-01-12T14:38:00",
"content": "Very cool hack. Thanks for the easy-to-understand explanation.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302540",
"author": "Dave",
"timestamp": "2011-01-12T16:34:50",
"content": "Wow, now this is the coolest thing I’ve seen on hack a day yet… and the explanation video was excellent. a big thank you to for adding this!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302547",
"author": "JC",
"timestamp": "2011-01-12T16:49:53",
"content": "Very cool. I’d hoped someone would figure this out when I saw the G-35 hack earlier.Did the guy trade his shoes for the lights? Kidding of course, nice video!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302577",
"author": "zookeeper9",
"timestamp": "2011-01-12T17:14:24",
"content": "Does anyone know of any open source pc software that could be used to take mp3 input and divide it into various channels, like voice, bass, treble; and then output some kind of serial string that the Arduino could process to light the lamps synced to the music?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302636",
"author": "Livermore-Dad",
"timestamp": "2011-01-12T18:39:39",
"content": "We have had an ongoing thread on this at doityourselfchristmas.com, and in fact we pulled Darco into that discussion.I was wondering if you would share your arduino code for that matrix?ThanksTory",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302692",
"author": "xargle",
"timestamp": "2011-01-12T19:49:19",
"content": "I wish you could get these in the UK :(",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302792",
"author": "Vinnie Vu",
"timestamp": "2011-01-12T22:38:27",
"content": "@zookeeper9, you can use the MSGEQ7 7-band equalizer chip with the arduino… I know sparkfun used to carry them for like $5 each… great for christmas lighting.I got these G-35 50 count for $20 at Lowes after Christmas clearance… wish I gotten more :-(Now I only have 50… not enough to make a marquee…… but they’re still fun.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303016",
"author": "scatterbrained",
"timestamp": "2011-01-13T03:21:48",
"content": "while this is a cool hack, it’s also kinda silly. If you have all the bulbs in such close proximity, it seems a lot simpler to remove all the hocus pocus and drive them with a matrix. Part of the reason for the cost of these sets is that you need something vaguely ‘smart’ in each bulb.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303510",
"author": "Roman Dulgarov",
"timestamp": "2011-01-13T18:09:33",
"content": "Hey Riney small world ha? :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304060",
"author": "Martin",
"timestamp": "2011-01-14T03:53:31",
"content": "I wish the code was published. It would be nice to build upon each other and our work.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304765",
"author": "riney",
"timestamp": "2011-01-14T21:56:43",
"content": "Thanks for the comments, everybody! Jason, the guy who wrote the code, is currently looking at cleaning it up for release. I’ll put the link here, on my blog, and on the Youtube video description when it goes up.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309734",
"author": "riney",
"timestamp": "2011-01-20T05:52:55",
"content": "Code has been posted here:https://github.com/riney/g35_arduino_marquee",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "309747",
"author": "Livermore-Dad",
"timestamp": "2011-01-20T06:16:38",
"content": "w00t thanks for posting the code. Will give it a whirl.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310113",
"author": "beeland",
"timestamp": "2011-01-20T15:18:14",
"content": "There’s a lot more that can be done with the code, but it was kind of neat that it was a 48 hour total project, so I left it in the functional state it was on completion. The only changes I made were to add some comments just to make it more easily followed by those interested.Riney and I have already determined some changes we’ll probably make to the addressMatrix() routine to make it tolerant of strands of differing lengths, etc.If anyone has any questions about the code feel free to post them.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310414",
"author": "dan fruzzetti",
"timestamp": "2011-01-20T22:04:08",
"content": "That reminds me of a joke:“We’re so poor, our welcome mat says ‘wel.'”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "531402",
"author": "brian",
"timestamp": "2011-12-10T05:11:50",
"content": "can you email directions on how to hack them along with what i need",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,303.282579
|
||
https://hackaday.com/2011/01/11/digitizing-player-piano-rolls/
|
Digitizing Player Piano Rolls
|
Mike Szczys
|
[
"Musical Hacks"
] |
[
"fiber optic",
"ir sensor",
"piano roll",
"player piano"
] |
What do you do with 100 player piano rolls but no player piano? You come up with a way to
digitize the information for MIDI playback
. The rolls have 90 columns worth of holes, 88 for the keys and two more for pedals. Voids in the paper cause a note or pedal to be played, so an optical sensor can be used to transform the analog data into digital information. Simple enough, you’ll just need 90 sensors. But this brings up quite an alignment issue. The solution is to use fiber optic cable to position the IR light source in a hand-made 0.2″ spaced jig. At least the spacing meshes nicely with standard 0.1″ protoboard, which is what was used for mounting the sensors.
[Thanks Mike]
| 28
| 26
|
[
{
"comment_id": "301615",
"author": "Lace Williamson",
"timestamp": "2011-01-11T19:35:46",
"content": "That. Is awesome. I want one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301629",
"author": "adric",
"timestamp": "2011-01-11T19:47:48",
"content": "Neat! I think hes just about ready to Have intallation #3 of this build up, I know most of the mechanics are done, its now getting close to the digital side of things.If anyone in the Albuquerque area is interested in such things Quelab is Albuquerque’s Hackerspace.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301635",
"author": "Anon",
"timestamp": "2011-01-11T19:55:52",
"content": "Could a camera and some software not do the job of 90 sensors?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301638",
"author": "john",
"timestamp": "2011-01-11T19:59:42",
"content": "Thought: might it have been easier (though way less cool) to use a scanner or webcam to capture the rolls in transit, and figure out the rest in software? Similar to to all those automatic guitar hero projects?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301646",
"author": "fartface",
"timestamp": "2011-01-11T20:05:42",
"content": "Others have already done this in a faster and easier design using a flatbed scanner.http://members.shaw.ca/smythe/archive.htm",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301648",
"author": "joe hosman",
"timestamp": "2011-01-11T20:08:23",
"content": "that’s what i was going to say john",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301653",
"author": "fartface",
"timestamp": "2011-01-11T20:15:52",
"content": "http://launch.groups.yahoo.com/group/Rollscanners/For full details on better ways of doing this.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301664",
"author": "Andrew",
"timestamp": "2011-01-11T20:27:05",
"content": ">so an optical sensor can be used to transform the analog data into digital information.There’s nothing analog about this data – it’s still digital data, even though it’s 50 years old and embedded on a paper roll.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6521010",
"author": "Jean-Pierre",
"timestamp": "2022-10-14T00:35:54",
"content": "I questioned the analog or digital ‘value’ of each punched voids on the papersee my question here:https://forum.pianoworld.com/ubbthreads.php/topics/3258911/how-to-correctly-interpret-paper-rolls-voids.html",
"parent_id": "301664",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "301665",
"author": "paul",
"timestamp": "2011-01-11T20:28:05",
"content": "I thought this sounded like the hard way to do it. plus wont you get light leak?Not that the creator should feel discouraged. in fact the level of workmanship is really impressive. I still enjoy reading these kinds of posts.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301690",
"author": "mermaldad",
"timestamp": "2011-01-11T20:58:04",
"content": "There are perhaps easier ways to do this, but I think it’s refreshing to see a different take on the problem.@Andrew:It’s two-dimensional data, digital in one direction (i.e. discrete positions for each key or pedal), but analog in the other (i.e. the length of one of those holes could be any value).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301742",
"author": "zing",
"timestamp": "2011-01-11T21:51:10",
"content": "Not to detract from the awesome looking machine, but some players let you “feather” the holes to adjust the playback, beyond having soft/sustain peddle tracks. This seems to only store hole/no hole instead of light intensity or whole width that a scanner based method would do.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301751",
"author": "GCL",
"timestamp": "2011-01-11T21:57:11",
"content": "This reminds me of what happened when the Smithsonian discovered that they had in their collection a remarkable collection of piano rolls cut by such composers as Rachmaninoff, and Gershwin. They needed the piano that cut them to even play them back. It turns out of course that they had that as well. It was a simple matter to assemble a chamber orchestra of suitable instruments in their collection to play back the compositions.Of course that was an extreme case that allows for the availability of everything.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301761",
"author": "GCL",
"timestamp": "2011-01-11T22:03:10",
"content": "I should also mention that the basic piano roll is about the size of a standard punched card. A computer over in Britain who used a similar method for running an Ammonia making plant, who was called ATLAS was re-purposed to run a sort of music making system not too long ago.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301793",
"author": "IBeHoey",
"timestamp": "2011-01-11T22:19:32",
"content": "While many are quick to point out that there are several other easier ways to simply make an archive of the music on these rolls. The potential I see with this method would be the ability to not only make an archive of the rolls but to also play them back in real time via the MIDI interface.Now if that is indeed the direction the author is going in well, IMO, major kudos to them because that’s pretty freaking cool.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301800",
"author": "zool",
"timestamp": "2011-01-11T22:27:46",
"content": "cool but, you can sometimes find player pianos for free on craigslist",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301829",
"author": "adric",
"timestamp": "2011-01-11T22:50:13",
"content": "IBeHoey, Indeed That is part of it, We want it to be a working player, When it was found it was just the gutted paper transport, which in its self is awesome. it has a amazing self centering method that i really wish they had added to tractor feed and plotter printers! Looking at the old Lead tube vacuum lines weresmashed and cut, and it looked like a neat bit of history sestined for the junkyard.When this project is done, it will allow us to digitize the tracks, but that could have been done lots of ways as others have posted, this will allow us to live play them any number of ways, both in sound and in lights or other methods.All of which are more fun than just having a copy of a old time midi file on a computer.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301845",
"author": "echodelta",
"timestamp": "2011-01-11T23:07:49",
"content": "An Aeolian spool box no doubt, the finest. Tracking is disconnected, but should be hooked up with a servo to the two fingers at each side of the tracker bar. This keeps the roll centered on track. Players never encoded the soft pedal only the damper pedal. The exception of course were the reproducers like Aeolians DuoArt with 4 bits for each half of the keyboard that controlled volume. This was binary weighted 1-2-4-8 in 1913! Midi only uses twice the bits but for each note. These players were fully automatic, incl reroll and shutoff. Whats missing from a roll conversion to midi, is the absolute joy of playing with your feet the volume of your own expression. This should be done in midi with a control in real time or edited into the work. A player running on a suction source is as boring as hearing recordings that have been compressed or peed on by mp3. Thanks for the links. I will follow them up, as I rebuild players and want to hack a roll perforator to preserve old rolls and bring new music to this old digital realm. Acid paper is taking it’s toll. At it’s peak the player was in 85% of pianos sold and the home entertainment system of choice.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301868",
"author": "IBeHoey",
"timestamp": "2011-01-11T23:34:05",
"content": "“All of which are more fun than just having a copy of a old time midi file on a computer.”Couldn’t agree more and I’m very happy to hear that you are going in that direction. Very, very cool. I’ve always been fascinated by the old player pianos and really hope to own one someday. I just might have to end up following in your footsteps and building one for myself.You sir have inspired me, and for that I thank you.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301871",
"author": "hammy",
"timestamp": "2011-01-11T23:35:59",
"content": "Very happy to see this – my grandmother still has a working Pianola and a library of 30+ rolls in her house (many christmas carol rolls, even the entire musical score of CATS)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302206",
"author": "andar_b",
"timestamp": "2011-01-12T07:03:55",
"content": "Reminds me of waking up to “O What a Beautiful Morning” when I was a kid, when my parents had a player at the bottom of the stairs.I fondly recall switching the piano to the twangy setting (pulling a small plunger under the keyboard) so it sounded like something from an old western. Dad didn’t like it when I did that :p",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302318",
"author": "brainzilla",
"timestamp": "2011-01-12T09:40:24",
"content": "Music-pirating just got a little more steampunk!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302625",
"author": "heegemcgee",
"timestamp": "2011-01-12T18:28:38",
"content": "A similar process was used to recover a set of “reproducing piano” rolls cut by Rachmaninov himself. They digitized the rolls (which WERE analog, capable of reproducing the nuance of volume and tempo) and played them back on a more modern piano with midi control. The result was recorded and released as “A Window In Time”, and it’s fantastic.http://www.arkivmusic.com/classical/album.jsp?album_id=650",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6675741",
"author": "John Grieve",
"timestamp": "2023-08-25T11:53:21",
"content": "A piano roll, is not analog. It’s one of the earliest forms of digital recording. Just using holes in paper.",
"parent_id": "302625",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "302632",
"author": "GCL",
"timestamp": "2011-01-12T18:33:13",
"content": "@heegemcgeeIn all likelihood that was the second time this had happened. See my first comment. But the first time they had done what is going on here. I remember listening to the album on WQXR-FM, the new NPR station in NYC last year.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310416",
"author": "dan fruzzetti",
"timestamp": "2011-01-20T22:06:22",
"content": "hackaday, is there a typo here?The information on the piano roll is already “digital” and “binary.” Scanning it optically is actually a form of conversion, not ‘digitisation.’",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "390299",
"author": "RobS",
"timestamp": "2011-05-05T08:08:51",
"content": "Many years ago I made a piano-roll (and band-organ book) reader from parts of an old FAX machine. The FAX machine had a line-scan CCD camera, analog compensation and quantization for the video, and several channels of 1-bit memory.Metal templates were made for each of the different kinds tracker bars to be supported. Care was taken to make the templates with exactly the same hole spacing as a tracker bar, but with holes about half the diameter of the tracker bar hole width.When the template was inserted between the light source (a florescent tube powered with DC) and the line-scan camera, the resulting digitized `video’ was recorded in on of the memories, that I called the template memory. This was `training mode’.Later, in `use mode’ the roll or book was fed through the machine, the system was effectively sensitive only to the light that passed through the centers of the holes in the book.Each camera scan of the roll or book traversed from one side, and as it went the memory address incremented at the camera pixel rate to 4096 across the width of the book. Each of the template `images’ consisted of several consecutive bits in the memory.In `use mode’, the camera video was recorded in one of the other memories. The digitized camera video was also compared with the recorded video from the previous scan (stored in the the other data memory. The comparison was done using a 2-line to one of four decoder to easily detect Note-ON and Note-OFF. The comparison was gated with the output of the template memory, causing the sampling to be done near the center of each hole (width-wise).At the end of each camera scan, the two data memories were swapped.Also at the beginning of each camera scan, a counter was initialized, and then counted each template memory bit as the camera scan progressed. When the counter was initialized with the proper value, the counter gave the MIDI note number for each row of the roll or book directly. Thus each Note-ON and Note-OFF would have the proper note number.Strictly speaking, the longitudinal sense area should be equal in length to the length of the hole on the tracker bar. With this refinement, the MIDI codes would more accurately mimic the action of the player piano. (Otherwise, the rapid Note-ON and Note-OFF sequenced that would result from sustained notes on the roll would be objectionable, and would have to be adjusted in post-processing.)The piano rolls I recorded were for Ampico, one of the varieties of `reproducing piano’. Several rows near each end of the tracker bar are used to control the `expression mechanism’ of the piano. To simply play the rolls (i.e., without expression), the signals from the `expression rows’ rows (i.e., certain of the MIDI notes) should not be forwarded to a MIDI synthesizer.A more elaborate system would use the expression signals and some simple analog circuitry to model the behavior of the pneumatic servos in an Ampico (eight levels of expression plus, fast and slow crescendo, decrescendo and faster discharge). The result, digitized, would be used to set the MIDI `pressure’ value for each MIDI Note-ON.Incidentally, an Ampico has only two expression `channels’, one for `bass’, the other for ‘treble’, divided a few notes above middle `CV’. MIDI has individual `pressure’ control for each note.(I’ve left out some details of the timing, and also a description of the `tracking’ mechanism to keep the roll in the right position as it is scanned. In a player piano, the roll is movable laterally by a pneumatic servo that tracks the edge of the mving roll near the tracker bar. In my system, the `tracking’ was done digitally, by sensing the edge of the roll with the camera. The `carraige’ holding the tensioned roll or book was movable laterally by a small, reversable DC motor controlled by the sensed video. Using one more memory, it would be easy to derive a atracking error signal from each note row.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "478786",
"author": "Chuck",
"timestamp": "2011-10-12T21:55:07",
"content": "Does anyone think this system could be adapted to play the paper roll’s used on Wurlitzer Band organs? I have several rolls that were used on a style 153 Wurlitzer Band Organ used on an amusement park carousel. The Organ was sold at auction, but I still own the original roll’s and one of the roll reels that was used as a spare for quick change of the music roll’s. Chuck L. Connecticut.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,303.528493
|
||
https://hackaday.com/2011/01/11/button-cell-connectors-for-breadboarding/
|
Button Cell Connectors For Breadboarding
|
Mike Szczys
|
[
"Tool Hacks"
] |
[
"battery",
"breadboard",
"coin cell",
"cr1212",
"cr2032",
"pin header"
] |
We’re working on a project that has a battery backup, but we don’t have any more coin cell holders on hand. No problem, we remember seeing a double pin header used for this. But when we tried to shove the CR2032 battery in between the pins it was a no-go. We could swear we’d featured a project that does this but couldn’t find it here at
Hackaday
. After much searching we came up with
the Guerrilla battery holder
which is seen on the left. No wonder it wasn’t working, the CR1212 in that picture is a much smaller package. So we figured we’d have to come up with something else, until inspiration struck.
There must be some other way to configure the pin header to work with a fatter cell body. On the right you can see that a diagonal orientation works like a charm. Join us after the break for a couple of close-ups of that connector and our thoughts on using this with a variety of different cells.
To make this connector two pins were removed from the 2×2 pin header, leaving room for the CR2032 battery to fit nicely on an angle. We also centered the remaining two pins in the plastic body to make enough of a tail to seat well in the breadboard. Now that we’ve done this, it should be simple to make it work with any coin cell. A bit fatter package might work with the center two pins removed from a 2×3 header, or on an angle with just two diagonally oriented pins on a 2×3 header. Give it a try with your battery of choice. It might just get you through the prototyping phase until it’s time to put in another parts order.
| 34
| 34
|
[
{
"comment_id": "301467",
"author": "Paul Potter",
"timestamp": "2011-01-11T17:35:50",
"content": "Simple and genius.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301506",
"author": "amishx64",
"timestamp": "2011-01-11T18:04:12",
"content": "This is really great! Nice tip.Is that an arduino I see there?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301508",
"author": "Simon Inns",
"timestamp": "2011-01-11T18:06:57",
"content": "Not an Arduino, it’s a DS1307 real-time clock",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301518",
"author": "alan",
"timestamp": "2011-01-11T18:16:25",
"content": "@Simon Inns – anyone could google the part number. Amishx64 meant underneath the breadboard in the first Picture. It looks like pcb board and i doubt its an arduino. aren’t those usually blue?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301519",
"author": "G",
"timestamp": "2011-01-11T18:16:31",
"content": "Wow you guys actually posted a “hack” on how to turn a battery. :S",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301527",
"author": "password",
"timestamp": "2011-01-11T18:23:13",
"content": "wow , the simplicity is just beautiful",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301528",
"author": "paul",
"timestamp": "2011-01-11T18:23:28",
"content": "I’m surprised this isn’t standard practice. Seems like a prefect answer. thanks for the heads up",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301534",
"author": "Samuel",
"timestamp": "2011-01-11T18:34:08",
"content": "hey, you can also us a 3,3V or 5V Power CAP like this:http://www.we-shop.eu/passive-Bauelemente/Kondensatoren/Gold-Cap/ELNA-Gold-Cap-Speicherkondensator-1-0F-5-5V::4707.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301540",
"author": "strider_mt2k",
"timestamp": "2011-01-11T18:40:14",
"content": "OMG WTF and other memery!!Never thought of that and now i am ashamed.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301548",
"author": "Ed",
"timestamp": "2011-01-11T18:43:19",
"content": "Awesome.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301551",
"author": "Robert Jacobs",
"timestamp": "2011-01-11T18:45:17",
"content": "This solution is so simple, yet so awesome.Good job!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301559",
"author": "Dosbomber",
"timestamp": "2011-01-11T18:51:49",
"content": "Nice. I’m currently working on a project which I want to place in a VERY small enclosure, small enough that a coin cell will barely fit, sideways, in a lidded cylindrical container. This idea should make things a little easier, I’ll just need to secure it a little better.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301563",
"author": "Mike",
"timestamp": "2011-01-11T18:55:58",
"content": "You mean you don’t just solder wires directly to it?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301564",
"author": "Jeditalian",
"timestamp": "2011-01-11T18:56:49",
"content": "solder wires/ wire-glue if that crap works.. to neodymium or any other conductive magnets of appropriate size. hard drive magnet for the base, smaller one for the other terminal. a little soldering isn’t going to hurt your magnet’s strength that much, and really, you could just use the magnets (insulated to prevent shorts) to clamp your connectors to the battery, in which case i would probably solder some appropriately sized washers to wires, one hard drive magnet should be more than enough for the task.for the vertical breadboarding arrangement, big metal backplate where the 2 pins are shown, and on the other side a wire held in place by a small magnet. another magnet on the back would offer extra security, but depending on the strength of the one magnet, may be overklll",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301566",
"author": "Fire Sokar",
"timestamp": "2011-01-11T18:59:31",
"content": "why not just take a 2×3 and remove the center two pins and bend the ends in to allow for a larger battery size? If you do this with pliers you will not break the plastic.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301567",
"author": "Dosbomber",
"timestamp": "2011-01-11T18:59:41",
"content": "By the way, in case anyone isn’t aware, the size of the battery is in the number (1212, 2032, etc.).CR1212 is 12mm wide by 1.2mm thickCR2032 is 20mm wide by 3.2mm thicketc.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301570",
"author": "CalcProgrammer1",
"timestamp": "2011-01-11T19:01:51",
"content": "I used a similar method for an SD card holder. I saw the idea on Instructables (might have been posted here too some time ago). Three pin header pieces soldered in a Y shape with the pins bent to press against the pads on the card and I had a working, reliable connection to my SD card.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301572",
"author": "Pedro",
"timestamp": "2011-01-11T19:02:35",
"content": "And CR relates to the battery’s chemistry, if I heard correctly.I’ve never been able to solder directly to coin cells even with a rather aggressive flux. perhaps I just need a higher power/temperature iron.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301588",
"author": "Dosbomber",
"timestamp": "2011-01-11T19:07:28",
"content": "I was even going to go so far as to etch some PCB stock and cut it into 3-4 pieces:1 piece as the positive side (copperclad)1 piece as the negative side (copperclad)1-2 pieces as plain laminate spacers (1.6mm boards, double stacked for a 2032.Small, custom battery compartment small enough to fit almost anywhere. Just solder pins or wires to the copperclad end pieces.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301616",
"author": "JC",
"timestamp": "2011-01-11T19:37:21",
"content": "Ha, good idea! So simple.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301620",
"author": "fartface",
"timestamp": "2011-01-11T19:40:28",
"content": "Silver soldr works great on coin cells. I solder on my own leads all the time.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "301723",
"author": "smoker_dave",
"timestamp": "2011-01-11T21:31:38",
"content": "You can just put bare wire against the battery and then wrap electrical tape around to keep it connected. The BIOS battery back up in my old laptop worked like that for about 5 years.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302091",
"author": "gyro_john",
"timestamp": "2011-01-12T03:59:38",
"content": "@fartface:Silver solder?! How do you do it? Anything I silver solder, I have to get it dull red (about 625 deg. C or 1150 deg. F) before the solder will stick. I wouldn’t try doing that to a battery. Please explain?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302124",
"author": "Spork",
"timestamp": "2011-01-12T04:52:37",
"content": "@gyro_johnSilver solder also refers to silver/tin alloys that come in spools like lead solder. It melts around 200*C rather than 600*C of silver solder rods used in plumbing. I’m guessing that’s what he means… or it’s a joke.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302147",
"author": "afreeland",
"timestamp": "2011-01-12T05:33:29",
"content": "I feel like I should have thought of this lol…so simple but seems to work so well…and for such a common problem…great idea",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302422",
"author": "retepvosnul",
"timestamp": "2011-01-12T12:20:47",
"content": "Riggig a miniture wooden or plastic clothes-pin is pretty secure. It works well enough for projects that a meant to be on the move.If you need a real dependable solution I would either salvage a component from an old motherboard of buy a bicycle led coin battery light and use the housing from that. Just remove the light and rig the PCB so 2 wires come from the housing.The options are rather endless.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302463",
"author": "nebulous",
"timestamp": "2011-01-12T13:45:32",
"content": "@ DosbomberI did not know that. And now I do. Thanks!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302596",
"author": "octel",
"timestamp": "2011-01-12T17:37:37",
"content": "Not a good idea to solder these batteries as you will ruin them or severely reduce their capacity.If you MUST have a permanent connection, look into spot welding like they do on Li-ion cells.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302744",
"author": "Eirinn",
"timestamp": "2011-01-12T21:04:59",
"content": "@alan could be a protoshield for the arduino :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "302807",
"author": "kernelcode",
"timestamp": "2011-01-12T22:56:03",
"content": "@jeditalianThanks for the battery idea, I need to get some batteries into my watch somehow. I’ve got some little 1 mm neodymium cubes, just the ticket!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "303518",
"author": "Roman Dulgarov",
"timestamp": "2011-01-13T18:18:30",
"content": "Excellent tip! Good to see that one can find everything from simple application of pin headers in non-standard way to building your own silicone transistor from scratch.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "304129",
"author": "Jeditalian",
"timestamp": "2011-01-14T06:21:58",
"content": "not all cr2032’s have a high iron content in the shell. usually they stick well but i’ve got one from a motherboard that barely sticks to neodymium",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "305748",
"author": "Benjamin",
"timestamp": "2011-01-16T00:59:07",
"content": "That’s true innovation, grat stuff!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "310417",
"author": "dan fruzzetti",
"timestamp": "2011-01-20T22:08:52",
"content": "could you use a pair of insulated wires to retain it by wrapping around the top of the coin cell and pulling through the board to make it mostly shock-proof?",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,303.601838
|
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