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https://hackaday.com/2011/07/16/playing-dvds-on-an-ipad/
|
Playing DVDs On An IPad
|
Mike Szczys
|
[
"home entertainment hacks",
"ipod hacks"
] |
[
"apache",
"dvd",
"idevice",
"ipad",
"stream",
"vlc"
] |
[Harrison Jackson] figured out
how to add DVD playback to an iPad
. It doesn’t require a jailbreak, or any hardware modifications to your prized tablet. The work is done with some server-side processing and played back through the browser.
The popular open-source multimedia player VLC has the ability to encode from the command line during playback. [Harry’s]
option flag mastery of the program
allows him to convert a DVD to a 320×240 format that is iPad friendly. But this alone doesn’t get the video any closer to being on the iDevice. You’ll need to be running a webserver that can stream video. This example is on OSX, but since he’s using an Apache server it should be simple to reproduce on any Unix variant. Once you’ve enabled m3u8 files in the Apache mime-types, the iPad browser can be pointed to the file address VLC is kicking out and you’ll be watching a movie in no time.
We’ve wondered about replacing our home theater front-end with an ATV 2 running XBMC but the thought of having no optical drive in the living room requires some contemplation. If this becomes a feasible option (that isn’t downscaled from DVD quality) it will be a no-brainer to make that jump.
Don’t miss the demo video after the break. Full instruction are in the comment section of that clip.
[youtube=http://www.youtube.com/watch?v=MZcjIZsl0gA&w=470]
| 25
| 25
|
[
{
"comment_id": "418463",
"author": "popoffka",
"timestamp": "2011-07-16T20:10:59",
"content": ">320×240 format that is iPad friendlyOh lol. Buying a huge 10″ tablet to watch QVGA videos on it is very badass indeed.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418466",
"author": "Joe",
"timestamp": "2011-07-16T20:21:41",
"content": "Hmm, I seem to recall that both DVD’s and iPads are much higher resolution than the “320×240 format that is iPad friendly.” Youtube on your iPad will be of a higher quality.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418478",
"author": "Chad",
"timestamp": "2011-07-16T21:06:01",
"content": "It’s hardly playing a DVD on an iPad. You can do the same thing with Orb. Less work.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418480",
"author": "Ben R",
"timestamp": "2011-07-16T21:09:00",
"content": "@Joe – I suspect the resolution was choosen for smooth transcoding. A more powerful machine could possibly transcode at a higher resolution.Personally, I’d rather just make the slight additional effort to rip to an AVI (or whatever compatible format you prefer) and play it locally on the device. Considering there is transcription software that’s nearly drag and drop, the effort isn’t even much greater (less work, more time waiting).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418481",
"author": "Ben R",
"timestamp": "2011-07-16T21:11:21",
"content": ".. But I should add, kudos for getting streaming working. I should bookmark this, I tried to use VLC to transcode a NASA stream to my phone for easy watching in the yard once (attempting to watch a launch from Wallops) and had no luck getting the formats right.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418484",
"author": "logic",
"timestamp": "2011-07-16T21:25:03",
"content": "OR… just go with a non hyped up device that supports basic features.SD/flash cards…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418490",
"author": "Jan D",
"timestamp": "2011-07-16T21:59:09",
"content": "You might find something useful at the dvblogic website (media center streaming to ipad):http://www.dvblogic.com",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418525",
"author": "ducky",
"timestamp": "2011-07-17T01:19:25",
"content": "I prefer to have my videos ripped to my computer, I stream them from my server using AirVideo…Server side you have the Air Video Server, it transcodes any videos down to whatever iOS device you’ve got and on the iOS Device you’ve got the Client that lets you pick what video/plays the video for you.http://www.inmethod.com/air-video/index.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418535",
"author": "doronbc",
"timestamp": "2011-07-17T02:30:20",
"content": "subsonic",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418542",
"author": "Whatnow?",
"timestamp": "2011-07-17T02:57:27",
"content": "This is considered a hack? Using existing software? And you don’t need to hack (jb)? I’m fairly sure there’s an application in the store to do this for you.Or since you’re using preassembled software, you might as well use VirtualDub or something to convert the file into MP4.There’s my hack. NOW FRONTPAGE ME.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418551",
"author": "m1ndtr1p",
"timestamp": "2011-07-17T03:39:46",
"content": "Yea, I agree with Whatnow?, there are more efficient ways to do this which would yield higher quality and resolution video with even less effort…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418558",
"author": "tooth",
"timestamp": "2011-07-17T04:09:15",
"content": "@whatnow? n m1ndtr1pwhy less effort its not fun if it is lesseffort.kids these days lazy lazy lazy.why do it you ask? because he can. more effort more fun.i was thinking that it was cool. you could put all your DVDs in a CD changer and program it to load and play remotely from the net. then you could have all your DVDs at hand and not use all your memory on the i pad.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418565",
"author": "audiophil",
"timestamp": "2011-07-17T04:23:43",
"content": "Uh. This is exactly what VLC has been designed to do. . . .browse youtube for ‘VLC Video wall’ or the like.And these days it takes very little cpu power to transcode a DVD to some other similar or smaller sized format; On an old multi-screen setup we used VLC to broadcast hd format video (an advertising / attract loop and promotions etc) to a variety of endpoints (multimedia receivers and other computers running VLC) because it was more convenient than purchasing a large multi-out HDMI splitter/repeater rig.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418567",
"author": "audiophil",
"timestamp": "2011-07-17T04:33:12",
"content": ". . . also, the over use of majestic plural is starting to get old in posts here.VLC is more than capable of streaming high quality dvd mpeg to a huge number of devices etc. (like a patched apple 1st gen apple tv).I can’t speak as to the possibility of it on the atv 2; maybe the jailbreakers have a app for it. Far more flexible to run a mac mine, hackintosh or htpc of some flavor. Boxee (cross platform) should be able to play http streams if I recall. Check their forums.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418596",
"author": "blue carbuncle",
"timestamp": "2011-07-17T06:04:07",
"content": "http://www.orb.com/Been using it for a month or so. Seems to work great with my friend’s iphone but no one I know has an ipad so maybe one of you guys could see how well it works with that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418634",
"author": "therian",
"timestamp": "2011-07-17T11:23:00",
"content": "by this logic you can play ‘DVD’ on TI89 calculator…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418642",
"author": "will",
"timestamp": "2011-07-17T11:54:16",
"content": "This is why I got fed up with apple why should one need that many steps and an additional webserver to easily play videos on a device that is in the proper size format to watch videos on are usb ports that hard to implement?Even special proprietary apple usb drives that snap into the body of it.wireless usb would be ok too.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418650",
"author": "t&p",
"timestamp": "2011-07-17T12:36:49",
"content": "@therianthat would be cool!I would favor it more if done on a TI-83",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418685",
"author": "Whatnot",
"timestamp": "2011-07-17T15:33:08",
"content": "Please don’t tell apple and apple users about the capabilities of VLC, if the average idiot learns how to use it then videolan will be destroyed in no time by the big boys since they don’t want the masses to have such functionality.Be glad with what you have and learn that sharing is sometimes very very bad. Loose lips sink ships.So kudos to this guy for pretending it can only do low resolution and you need to run a webserver :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418803",
"author": "Whatnow?",
"timestamp": "2011-07-17T21:20:43",
"content": "@toothSo if I toss a bog standard DLNA server on my home rig, set up a VPN to my office to play my media files…This is a hack that should definitely posted? If that’s the case, I’ll write it up immediately.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418827",
"author": "ScottInNH",
"timestamp": "2011-07-17T22:31:05",
"content": "This is just one person’s imaginative method of playing DVD content. This is totally the wrong way to do video on the iPad however.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418899",
"author": "Paul",
"timestamp": "2011-07-18T02:27:42",
"content": "The ipad can’t play xvids?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "419093",
"author": "n900",
"timestamp": "2011-07-18T10:53:40",
"content": "I can play dvd movies from usb-dev-drive whith mplayer.. or from dvd iso images.. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "419094",
"author": "n900",
"timestamp": "2011-07-18T10:55:35",
"content": "http://www.symbianzone.us/2010/11/video-nokia-n900-maemo-os-connected.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "419244",
"author": "poot",
"timestamp": "2011-07-18T19:49:24",
"content": "Or just install XBMC on the ipad and run DNLA server to host dvd ISOs and play them with full menu, etc.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,142.437677
|
||
https://hackaday.com/2011/07/16/building-a-simple-fm-transmitter-bug/
|
Building A Simple FM Transmitter Bug
|
Mike Nathan
|
[
"Radio Hacks"
] |
[
"bug",
"fm",
"kit",
"transmitter"
] |
[Dino] got his hands on an FM transmitter “bug” kit via a friend, and thought it would make for
an easy and fun Hack a Week project
. The kit is simple two transistor half-wave FM transmitter, which the manufacturer suggests could be used to bug a room, hence the name. After poking a bit of fun at the instructions, [Dino] gets to work building the transmitter, wrapping things up in a little less than an hour.
Once he finished soldering everything together, he takes a few moments to test out the bug and to explain how various parts of the board work together in order to transmit the FM signal. He mentions that adding a dipole antenna would make it easy to extend the range of the transmitter, and briefly teases next week’s episode, where he plans on constructing a similar dual-stage transmitter.
This sort of FM circuit is one of the first few simple projects you would see in a beginner’s electronics class, so if you know anyone that is just starting to get their feet wet, be sure to pass this Hack a Week episode along.
Continue reading to see [Dino] explain the ins and outs of his FM bug transmitter.
[youtube=http://www.youtube.com/watch?v=lUmUwWh_9RE&w=470]
| 49
| 47
|
[
{
"comment_id": "418443",
"author": "stormdog",
"timestamp": "2011-07-16T18:36:39",
"content": "He says that’s a Hartley oscillator. Is that correct? Doesn’t a Hartley need two inductors?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "2746494",
"author": "Edwards",
"timestamp": "2015-10-09T12:56:29",
"content": "Hartley needs one inductor split into two which may or may not be the same thing as two inductors. Colpitts splits the capacitor into two in connected together at one terminal. Confusing isn’t it ?",
"parent_id": "418443",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "418445",
"author": "Roberto",
"timestamp": "2011-07-16T18:45:03",
"content": "Are the components available in SMT?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418446",
"author": "Pedro",
"timestamp": "2011-07-16T18:52:11",
"content": "Dino’s work is excellent and I’d subscribe to his blog if it weren’t for the fact that every single hack gets reposted here!Not that I’m complaining, but are HaD still looking for an in-house writer? Pay Dino to keep these quality articles coming.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418451",
"author": "Werfu",
"timestamp": "2011-07-16T19:12:11",
"content": "I always wondered if it would be possible to couple an FM transmitter and receiver to a modem and use it as a kind of long range communication device.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418452",
"author": "alan",
"timestamp": "2011-07-16T19:16:09",
"content": "Of course it is possible Werfu, how do you think your mobile phone can connect to the internet.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418460",
"author": "cliff52",
"timestamp": "2011-07-16T19:48:48",
"content": "@stormdog – The references I found for Hartley oscillators showed two inductors or a single tapped inductor. This looks like a simple LC oscillator rather than a Hartley.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418465",
"author": "cliff52",
"timestamp": "2011-07-16T20:18:56",
"content": "@stormdog – The datasheet for the kitsrus version of this circuit (http://www.hobbyengineering.com/H1481.html) contains reference to a paper by Francis McSwiggen detailing the design. Therein it is referred to as a Colpitts oscillator based on an LC tank circuit with a feedback capacitor.(Moderator please delete my earlier comment) :^)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418474",
"author": "Kevin",
"timestamp": "2011-07-16T20:43:59",
"content": "WOW imagine how small that could get with SMD!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418475",
"author": "doug",
"timestamp": "2011-07-16T20:46:14",
"content": "not a hack… basic electronics from a kit. if he made it do something it wasn’t meant to do that would be a hack. Even if he made an intellegent choice of changed capacitance and inductance values so as to transmit at a different frequency, but just doing some through hole sodering is not a hack",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418482",
"author": "drew",
"timestamp": "2011-07-16T21:20:39",
"content": "i thing your missing the point of the post dougyes it’s not a true hack but it’s a start a very simple start",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418491",
"author": "Tweeks",
"timestamp": "2011-07-16T22:02:39",
"content": "I’ve been doing electronics for 25 years.. and always wanted to build one of these. I’ll have to go see if I can fine a VOX (voice activated) version.. and that dual stage with higher voltage one sounds cool too! :)Thanks for the cross post Mike!Tweeks",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418493",
"author": "doug",
"timestamp": "2011-07-16T22:21:02",
"content": "It is not a good start, this is an example of someone who feels compulsed to provide web content on a periodic basis, in a feeble attempt to secure his position as a “knowletgebale” provider for his target audiance.There is nothing that can be learnt from the video, he casually list a few learning outcomes such that could be derived such asclassic amplifiersfm transmissionvhf antennaspositive and negative feedbackstray capacitancecrystal locked oscillatorssignal attenuationHowever doesn’t cover any of these topics and likely doesn’t have the technical knowlege to present them in a coherent fashion.These are general topics of the study of radio electronics. The majority of these topics do not apply at all to the project at hand. However, by stateing them he gives creadence to the sudo scientifc study that the “hackers” are clinging to and as such places himself as a dominate figure by being a provider of content to his target audiance.This is drival, if you were to be really interested in these topics the appropriate action would be to study them, either formally at an institution of higher learning, or informally via the many community opertunities such as ham radioThis shows the lazyness of Had, that the feed of information from a known source is presented without first taking a critical look at the content for it’s applicable merit to target audiance.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418513",
"author": "Rachel",
"timestamp": "2011-07-17T00:40:45",
"content": "I made this exact kit over a decade ago. It was lousy then, and it’s lousy now. The thing barely worked, and was nearly impossible to tune into.Just once I’d like to see someone design a very simple paired radio for simple digital transmissions. Everything out there is either hobbyist quality junk like this, or expensive modules.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418518",
"author": "J Harton",
"timestamp": "2011-07-17T00:50:35",
"content": "@doug That would be spelled “drivel” you dunce, oh and also “knowledgeable” NOT “knowletgable”, can’t anyone spell online these days? In any case, who are you to presume that HAD cares what the heck you have to say? Stuff can be studiedly independently with a book, it doesn’t require any formal or community anything. Many of those topics are far too advanced for most people to care. The idea that the average person can build a radio transmitter out of readily available components is much more interesting. “true hack”? What kind of B.S. is that? You don’t get to define things. In any case, hack in the dictionary doesn’t mean directly anything of the sort that you are referring to.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418533",
"author": "doug",
"timestamp": "2011-07-17T02:18:55",
"content": "I apologize Harton if I have offended you by having an opinion, but it would seem to me that the purpose of the commenting system implemented by Had is in place to facilitate the open discussion of opinions related to the articles.In response to your varied forms of self-studying, I feel you misinterpreted my intentions. I was saying that self studying is a excellent form of education and there are a variety of methods to go about that, by no means did I mean to imply that my list was exhaustive and I will agree that “books” are a good way to study. The point I was making is that the form of idealism that the original content provider created by saying that buying and building the Kit, that he just demonstrated will teach you this material, is a falsehood.That people who are serious or even non serious have a multitude of other viable options. The point was that the claim made in the video demonstration is not dis-akin to saying if you own a toaster you are practically a mechanical engineer, since the device uses concepts related to thermodynamics, statics, mechanics, and dynamics of material, structural analysis and proper design rules.Additionally I never referred to the ideological matter of a “true hack”. I do feel fairly confident that this would fail any definition of the word hack. As for immense technical accomplishment that has provided us the technology for a average person to be able to create a basic radio devices. This hack misses the mark by a long shot, for an interesting personal educational experience spend some time researching foxhole radios .My understanding of the origin of the word hack comes from the M.I.T. artificial intelligence laboratory where the students were said to be spending copious amounts of time hacking away at their computer terminals trying to make the computers do things that they weren’t programmed to do. And later similar efforts were likewise called hacks.This demonstration of a simple simplex radio system shows no likeness to the MIT example.Drival is absolutely a colloquial terms and I will stand by my right to spell it how appropriate within my discourse community.The true strength of the English language is its ability to change with the current methods of communicating, (citation is available but not provided.). Therefor it is my responsibility, as it is everyone else’s who speaks English, to be constantly redefining the language to best match current rigours of society.“knowletgebale” (sic) was a typo I apologize for any distress it caused you",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418543",
"author": "bob",
"timestamp": "2011-07-17T03:03:18",
"content": "Used to build these when I was 12 (>30 years ago), with RF transistors desoldered from TV sets….Problem with this sort of design is:1. it is coupled to the antenna, banging the antenna of movement causes the sound to be transmitted, or the whole thing to generate a frequency sweep of a large part of the band it is operating in.2. The harmonics of this design are horrendous, and in some cases in excess of the Freq. of the oscillator transistorReally you need to be carful with this, since it can and does inter fear with the emergency band3. Poor temperature stability.4. Massive increase of range , by changing the transistor, voltage, range in excess of 6 miles is easily possible, and with it the swamping of communications in nearby bands.5. poor bandwidth/ modulation control if the amp section starts clipping",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418547",
"author": "Olivier",
"timestamp": "2011-07-17T03:17:29",
"content": "@J Harton: following a manual and soldering an electronic kit isn’t a hack, no matter what you say.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418589",
"author": "Sebastian",
"timestamp": "2011-07-17T05:28:23",
"content": "I tried simulating the oscillator but it doesnt oscilate, does anyone know why?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418618",
"author": "anonymous",
"timestamp": "2011-07-17T08:43:27",
"content": "I am an electronic novice and I agree with most of the comments that the video/link posted is probably too low quality to warrant the name “hack”. I have assembled many kits in my time and I don’t feel any wiser for it. It’s easy to follow directions to assemble a complex piece of electronics equipment. It’s a much hard thing to understand what you’re assembling.The only reason I watched the video was for an explanation of how the FM transmitter worked and I found that to be too minimal to be of any use. What I would have liked to see is a more in depth description of how a Hartley oscillator worked and a segmentation of the circuit in terms of function and a description of each. For example, are most of the other capacitors in the circuit there to change DC to AC? Why 22pF for the first capacitor? Is the capacitor tied to the base of the second transistor there to shunt high frequency noise to ground? etc. etc. These things may be obvious to veterans, but an explanation to newbies, such as myself, would be invaluable.Speaking of which, does anyone know of a good in depth analysis for a simple FM transmitter circuit? Perhaps a blog or paper? (and if so, maybe that would make a good HaD article/post?)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418624",
"author": "D_",
"timestamp": "2011-07-17T09:26:59",
"content": "@Rachel no matter what your desires or need in a data radio are, like it or not, the problem is having spectrum where it’s legal to operate such radios in. Hacking WiFi dongles might be the most obvious approach as they are unlicensed consumer devices.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418638",
"author": "therian",
"timestamp": "2011-07-17T11:33:35",
"content": "the first thing I ever solder was fm bug from talking-electronic book and recycled components, no kits",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418641",
"author": "opa",
"timestamp": "2011-07-17T11:53:25",
"content": "There is just some very cheap fm transmitter with a LCD availible on ebay, it works pretty nice because the output is more than the usually 5nW (max. allowed in Ger)http://cgi.ebay.de/1-8-LCD-Car-MP3-MP4-Player-FM-Transmitter-Remote-SD-MMC-/370521514189?pt=AU_Electronics_Portable_Audio_Accessories&hash=item5644cda0cdOf course still a simple and clean “hack”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418661",
"author": "twopartepoxy",
"timestamp": "2011-07-17T13:27:43",
"content": "i don’t like to be negative, but i have to agree with some of the points that @doug has made (and i couldn’t care less about a couple of spelling mistakes, this isn’t a bloody spelling bee for christs sake!).there are many levels of knowledge that people have in various aspects of technology, so educational material at every level is welcome, but i think this video only contains the barest of educational value at any level. it is simply a guy soldering a kit!what is slightly annoying is that this guy seems to be positioning himself as some kind of ‘guru’. there seems to be a (very welcome) explosion of people offering free educational material on the web at the moment, much of which contains very valuable material. this doesn’t.its laughable that he previews the next week’s episode: soldering another kit!??!?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418676",
"author": "stormdog",
"timestamp": "2011-07-17T14:35:31",
"content": "@cliff52 – Thanks. It’s been quite a while since I’ve looked at oscillators, and thought maybe I’d forgotten what Colpitts or Hartley was.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418689",
"author": "Sk",
"timestamp": "2011-07-17T15:48:58",
"content": "The definition of a hack is held by the person, yes very basic, I see something I could dig up enough parts to do with the children and have fun. Blasting it as “not a hack” is subjective, and not productive. Where are your hacks? Blasting “not a hack” posts is a waste of time also, just people looking for someone to argue with… and you took the bait, as did I.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418759",
"author": "space",
"timestamp": "2011-07-17T19:19:23",
"content": "@Sebastian Simulators aren’t as versatile as they appear to be. There might be a problem in the modeling of transistor or in the way the simulator chooses time unit for the simulation. The later might be adjusted, depending on the simulator used.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418770",
"author": "doug",
"timestamp": "2011-07-17T19:51:02",
"content": "@sk is my telephone a dog because my subjectively definition of dogs identifies it as such?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418914",
"author": "Paul",
"timestamp": "2011-07-18T03:39:51",
"content": "I am shocked that the comments already have a bunch of people commenting on the quality of the post…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "419104",
"author": "Dino",
"timestamp": "2011-07-18T11:46:39",
"content": "@dougThank you for pointing out that this is not a hack. Your knowledge of syntax is uncanny.Where’s all your projects with detailed explanation of theory and such? I’d love too see them as I’m sure we’ll all be humbled by the glory of your all encompassing knowledge of all things.Dino",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "419123",
"author": "electronicsnerd",
"timestamp": "2011-07-18T13:10:54",
"content": "For a number of different designs with a lot of informed commentary, look for “SPY CIRCUITS” at:http://www.talkingelectronics.comColin Mitchell does a great job of explaining design choices.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "419178",
"author": "pelrun",
"timestamp": "2011-07-18T16:38:23",
"content": "It’s interesting to see Talking Electronics mentioned a couple of times here, because the bug in the post was designed by TE!Here’s TE’s Earwig, with a nice description of the design:http://www.talkingelectronics.com/projects/Earwig/Earwig.htmlThere’s probably a closer match, but I’d have to dig out my old TE books to find it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "419184",
"author": "Dino",
"timestamp": "2011-07-18T16:48:22",
"content": "@twopartepoxyI’m no EE… I’m self taught and still learning and I’ll be the first to admit that. I learn something from every PROJECT I build.Any perception that I am trying to “position” myself as a “guru” is purely the interpretation of the reader. My intent is to inspire people to make things.. not just electronics. I feel I have done so many time as I frequently receive email stating this.Why is it laughable that next weeks project is a kit? What’s funny about that? I do plan on modifying it with bigger transistors and more power in an attempt to get more range out of it as I stated in the video. This project was simply to show a basic FM transmitter kit to people that might not know they are available.You say you “hate to be negative” and yet you are. I find folks like you very odd… you preface a statement with a denial of the very thing you are doing, thereby giving you false license to be and ass.Now go build something, come back here and post it, and I’ll give you my opinion of what I think of it.Unless your too busy trolling…..",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "419194",
"author": "Caleb Kraft",
"timestamp": "2011-07-18T17:22:07",
"content": "We love you Dino.",
"parent_id": "419184",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "419189",
"author": "deathventure",
"timestamp": "2011-07-18T16:58:19",
"content": "Just a note, he didn’t buy it. A user sent it to him. He just wanted to put it together and give a brief demonstration of it. There was nothing more or nothing less stated from the video if you had really watched and paid attention to it. It wasn’t particularly interesting, but you’re bashing the guy for assumptions that he isn’t smart or just there to create content for the purpose of garnering attention. Step back and appreciate it for what it is, not for what you think it’s trying to be.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "419192",
"author": "ttom",
"timestamp": "2011-07-18T17:12:45",
"content": "@dougTo have such critical opinions I would argue it is safe to assume you have some experience.Send us a link to a few of your projects so we can learn from your work… but first make sure to ask your parents for permission to post online.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "419200",
"author": "uzerzero",
"timestamp": "2011-07-18T17:41:46",
"content": "This was my first project when I started my electrical engineering degree. I really enjoyed it as everything else I had done up to that time was just LEDs and repairs. I liked that our professor made us calculate the proper values for the capacitors and resistors. The only things we were told was Vin, the transistor polarity, and we had a variable resistor for adjusting frequency. It really helped instill what each component does. The FM transmitter project is a great intro to electronics and EM spectrum.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "419203",
"author": "abobymouse",
"timestamp": "2011-07-18T18:07:37",
"content": "@doug – jesus christ lern2proofread; trying to sound smart by using long words fails when you mangle most sentences you write.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "419237",
"author": "Mark VandeWettering",
"timestamp": "2011-07-18T19:26:50",
"content": "It’s nice that hack-a-day provides this comment and discussion area. I think that the comments and discussion are more useful when they are used to provide further information and links, and rather less so when they merely claim that the projects are trivial or stupid.It’s certainly true that these little bug transmitters aren’t really all that good. They’ve really only got one transistor in them, aren’t crystal controlled or phase locked, provide no real audio input processing/limiting. It’s not really a surprising (or useful) comment to bring that to anyone’s attention, especially with more verbiage than the entirety of the original presentation.What they are is a fun introduction to soldering and radio. If that doesn’t interest you, then you could surf on to the next hackaday story, it doesn’t really require any special commentary.In the interest of taking my own advice, here’s a link to homebrewing the same kind of transmitter, using just one transistor (no real need to get a kit with a pcb):http://anarchy.translocal.jp/radio/micro/howtosimplestTX.htmlIt inspired me to build one:http://brainwagon.org/2011/04/19/the-micro-fm-transmitter-on-copper-clad-much-better/And my construction inspired at least one other cool followup, an SMT version:http://wa0uwh.blogspot.com/2011/04/micro-fm-transmitter.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "419265",
"author": "John Schuch",
"timestamp": "2011-07-18T21:05:01",
"content": "Any criticism devoid of suggestion, direction, and encourgement is surely the sign of a petty and petulant mind, @doug.Dino, I enjoyed the video and I am looking forward to the hacked/modded version next week.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "419393",
"author": "D_",
"timestamp": "2011-07-19T02:41:31",
"content": "While it’s just only my opinion, and I’m not directing my comments to Dino in particular, because the world is full of persons who think they can really learn science by assembling something. I have my doubts that someone can learn what capacitance is, and what the function of every capacitor in a circuit is, by simply placing it where a schematic or the silkscreen on a PCB directs. Use any active or passive component as an example other than a capacitor nu suspicions would be the same. Heck one would even learn the difference between an active or a passive component.I wouldn’t expect every builder of electronic circuits to be an EE, as I never took my education that far. Thing is without without “book learnin” support by lab experiments, and really studying operational circuits they construct; on really doesn’t stand a chance of trouble shooting a circuit they built if it doesn’t work. The shade tree mechanic method of blindly trying fixes until something finally work is not trouble shooting.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "419426",
"author": "Dino",
"timestamp": "2011-07-19T04:38:17",
"content": "Of course just soldering a component in place won’t teach you about the component BY DEFAULT!!You have to have the desire to learn what it does. Assembling a kit might just spawn the desire to learn more and so lead to gained knowledge and the ability to learn how to troubleshoot.That being said, what’s your point?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "419689",
"author": "Mark VandeWettering",
"timestamp": "2011-07-19T15:10:11",
"content": "Expertise requires both skill and knowledge. One gains knowledge through study, skill through practice. Both are important: hacks require both. Any given story probably has more of one than the other. I dont see how that is a problem.But honestly Doug, if you feel strongly about this, would not a better course of action be to create your own project to your own specs, and link it here?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "419750",
"author": "D_",
"timestamp": "2011-07-19T16:51:50",
"content": "For myself I stated the point I hoped to make in my first sentence. Addressing those claim that by simply building they can learn anything practical about electronic circuits. In the event they those they influence, lived off in their own world, I wouldn’t bother to comment to it all. Thing is they don’t, and their erroneous conclusions, cost others time, money at best endanger others at the worst. That situation, isn’t limited to electronics and crosses over into most every DIY area.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "419767",
"author": "D_",
"timestamp": "2011-07-19T17:52:27",
"content": "The oscillator looks to be neither a Hartley or a Colpitts. I suspect the data sheet suggested looking them up for the builders unfamiliar with oscillators. Having a harm time discovering if this oscillator does have a common name.Another thing I’m having a hard time discovering is, what is a “half-wave FM transmitter” as that is what this is described as in the write up. I never heard or read the term before, but that doesn’t mean it isn’t valid so searching the web, and print references here I went, finding nothing. Unless the reference is to a half wave antenna? BTW; a dipole IS a half wave antenna.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "419792",
"author": "jrspruitt",
"timestamp": "2011-07-19T19:08:31",
"content": "@D_I have the same kit, and built it out yesterday, then went through it and tried to figure out how it all worked. The best I could find on the oscillator was that it was just an LC Oscillator. Its fed by a feedback capacitor that is connected across the Emitter and Collector of the final transistor which is connected to the oscillator circuit. This varies the current on the Base Emitter junction at the resonant frequency. To keep the LC Oscillator going.The half wave part of the product description, I would believe to be that the whip antenna that comes with it, is half the wavelength of the 100mhz signal it is tuned to, so a 150cm piece of wire. The instructions list a quarter wave option, that uses coaxial cable in a dipole configuration.As for the educational value of kits. I’ve been frustrated a few times, as some kits are sold with the description, “learn about X and Y!” and in reality, if you are lucky they give you enough names, that you can look it up on the internet. Some false advertising on their parts. But I guess like anything, it is what you make of it, so if you want to know, you got to investigate it yourself and realize kits are good for getting you some practice building kits, and feeding you some concepts to further investigate on your own.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "420166",
"author": "Nathan Zadoks",
"timestamp": "2011-07-20T11:49:09",
"content": "I guess it comes from the KGB – it says ‘COMRADE’ on the PCB..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "421791",
"author": "Atdiy/Tymkrs",
"timestamp": "2011-07-23T16:01:29",
"content": "If anyone is interested in what each of the components may be used for specifically, I’ve the same kit as dino and jrspruitt and am writing a series of posts about it starting with:http://tymkrs.tumblr.com/post/7930482002/fm-transmitter-bug-electret-micshttp://tymkrs.tumblr.comto get to more recent ones.And it’s thanks to Dino and his tinkering on this that I decided to practice soldering and work on this project instead of procrastinating! Thanks Dino :).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "664739",
"author": "craxyow3",
"timestamp": "2012-05-31T18:56:29",
"content": "If for any reason, is it possible to replace the mic for a 3.5 mm plug?if so, what would the changes be ?",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,142.625253
|
||
https://hackaday.com/2011/07/16/skateboard-tagging/
|
Skateboard Tagging
|
Mike Szczys
|
[
"Transportation Hacks"
] |
[
"pool",
"rc",
"remote control",
"skateboartd",
"SprayPaint"
] |
We abhor vandalism, but we love art. Here’s
a skateboard hack that lets skate punks young and old tag their turf
while they ride. [D*Face], a
multimedia street artist
who grew up in London, added a mounting system to the bottom of his skateboard which includes a can of spray paint. We’re a bit surprised that there’s room enough for that, but the system fits nicely. They’re not locked into a constant stream because the system lets the rider (or a bystander) actuate the spray can via remote control.
But the brush is only one part of the painter’s tool chain. To get the most interesting effect, a pool was painted white to serve as canvas and a troupe of skaters was unleashed on it to try out the modified boards. Check out the video after the break to see the colorful and pleasing curves that result. We just hope nobody bailed and smeared the canvas at the same time.
[youtube=http://www.youtube.com/watch?v=ScW5kWzSaSI&w=470]
[Thanks Jerome]
| 19
| 19
|
[
{
"comment_id": "418408",
"author": "Hackerspacer",
"timestamp": "2011-07-16T16:25:22",
"content": "Still no posts about the new arduinos?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418409",
"author": "ferdie",
"timestamp": "2011-07-16T16:32:29",
"content": "i have send this idee more than a weer agonow its on the site but i dont see my namewhy i send tips if my name not be display",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418411",
"author": "smoketester",
"timestamp": "2011-07-16T16:38:06",
"content": "kILLER!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418415",
"author": "Tel",
"timestamp": "2011-07-16T17:11:51",
"content": "Ferdie, if you can’t use spell check, don’t post.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418418",
"author": "MrX",
"timestamp": "2011-07-16T17:20:24",
"content": "Now add GPS positioning to each skate and add a microcontroller to control the spray nozzle. Then using a central computer, coordinate all the different skates/runs to create a single picture art made of different random lines/colors!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418423",
"author": "Hacksaw",
"timestamp": "2011-07-16T17:39:20",
"content": "The things they call art these days…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418425",
"author": "Wolfton",
"timestamp": "2011-07-16T17:44:11",
"content": "I’m sort of with Tel on this. Ferdie, perhaps your submission was too difficult to understand.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418426",
"author": "sneakypoo",
"timestamp": "2011-07-16T17:44:34",
"content": "@ferdie: Do you think you were the only one on the internet who saw it?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418449",
"author": "Matt",
"timestamp": "2011-07-16T19:03:54",
"content": "Looks cool to me.Please wear helmets though!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418489",
"author": "Jerome Demers",
"timestamp": "2011-07-16T21:53:00",
"content": "I am the one who send this in last night! HAHA! :P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418497",
"author": "Mike Szczys",
"timestamp": "2011-07-16T22:58:29",
"content": "@Jerome: Yes, and I forgot to thank you. Sorry about that, I’ve fixed it up for you.@ferdie: Sorry if we missed your original submission. The real problem here is that for every great tip that hits the tip box, we get tens of messages that are selling stuff, asking us to break into websites (which is obviously NOT what we do here), seeking a place to advertise, or informing us of the fortune we’ve won in the lottery. We try to scrutinize each submission, but if it’s not obvious that clicking through is worth our time we just delete it and keep looking.When you find something cool. Please do submit it to us. It’s the only way we can find out about many of the things seen on Hackaday. We’re thankful for those doing the hacks (and publishing something about them), but also to those readers who take the time to pass along a link. Thanks!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418500",
"author": "ferdie",
"timestamp": "2011-07-16T23:25:32",
"content": "@ mike szczys thank you for this infoI get it from your point of view is due atvertentie etcwhen I find some cool thigs I tip them and hope is under my name because it remains one of my favrtiete sites",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418510",
"author": "Ernst Hot",
"timestamp": "2011-07-17T00:25:49",
"content": "If they pulsed it, the lines would indicate speed as well as trajectory, might look nice.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418540",
"author": "Pete",
"timestamp": "2011-07-17T02:44:34",
"content": "I saw this a while back and remember seeing the spray mechanism in brief glimpses in the video. It appeared to be well engineered. Neat idea too.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418550",
"author": "Amos",
"timestamp": "2011-07-17T03:29:40",
"content": "Great, now fill the pool back up with water and stop wasting it on useless skateboarding :PBTW, what’s the point of the RC valve? They always seemed to have the paint on on their way to the pool, and then just left it on the whole time… I kept waiting for someone to do a dashed line or some Morse code or something, but it never happened! Lame skaters are lame.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418553",
"author": "tooth",
"timestamp": "2011-07-17T03:45:24",
"content": "maybe he is from a non English speaking country.hhmmhhhhhhhmmmmmmm. any ways,i was wondering who pool it was in then i found out it was the guy in the video. reminded me of the old spiral thing you put a pen in a hole and it makes a design.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418569",
"author": "DudeBro",
"timestamp": "2011-07-17T04:40:08",
"content": "I would like to see a version with several cans attached for rainbow skating. Shaun White skateboarding for real!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418698",
"author": "Whatnot",
"timestamp": "2011-07-17T16:13:43",
"content": "How do they stop themselves from grinding? Can’t be easy for an enthusiastic skateboarder@Tel He’s dutch I think.Not that he could not do better though since he even misspells words that are the same in dutch, but some people are bad at language and good at hacks I found so we have to take the rough with the smooth.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "419164",
"author": "Parcanman",
"timestamp": "2011-07-18T15:36:56",
"content": "Gridning’s not an issue if the can is above the truck axles, board-sliding on the other hand would lead to some interesting results. I’d like to see multiple cans or nozzles painting text or graphics behind the board.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,142.375128
|
||
https://hackaday.com/2011/07/15/race-car-pov-led-displays/
|
Race Car POV LED Displays
|
Mike Nathan
|
[
"Arduino Hacks",
"LED Hacks",
"Transportation Hacks"
] |
[
"arduino",
"gps",
"led",
"POV",
"race car"
] |
Last year, when [Alex] was asked by his friend [Martin] to help him out with building
some LED POV modules for a race car
, his response was a enthusiastic “YES!”
[Martin’s] goal was to involve fans more deeply in the race, so he decided that the POV modules would carry messages from fans on-board, printing them in the night as the race cars screamed around the track. The pair started prototyping and testing a design, wrapping things up shortly before this year’s 24 hours of Nürburgring.
The modules consist of an Arduino-compatible AVR, a GPS module, a 16-LED light bar, and the circuitry for driving the LEDs. While most of the components are pretty standard fare, the we don’t often see a GPS sensor built into a POV display. [Alex] says that the sensor is used to calculate the speed of the cars, ensuring a uniform font size.
They took their LED displays to the 24 hours of Nürburgring, where they were invited by Audi to install the modules on a pair of R8 Le Mans race cars. As you can see by the pictures on his blog
and Flickr set
, the POV units worked out nicely without having to stretch the camera exposure times too far.
If you’ re interested to hear a bit more about how the displays were built,
check out this entry in[Alex’s] blog
, where he goes through some additional details.
Update:[Alex] pointed us to
the videos
!
| 26
| 25
|
[
{
"comment_id": "418113",
"author": "Caleb Kraft",
"timestamp": "2011-07-15T21:15:34",
"content": "This post prompted a discussion internally.When does POV become light painting? We’ve heard people get nitpicky on the subject in our comment section.I propose this. If it *can* be seen by the naked eye, it is POV. If it *requires* slow shutter times it is light painting.This means that POV could be light painting, but light painting isn’t POV. What do you guys think?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418115",
"author": "Marc",
"timestamp": "2011-07-15T21:20:47",
"content": "That is so cool",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418116",
"author": "Bob D",
"timestamp": "2011-07-15T21:23:56",
"content": "You’re right Caleb, POV is, by its definition, entirely in the eye. (Well, and the brain.)I wish there was a video of the above to see how the effect looked live.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418120",
"author": "Mikey",
"timestamp": "2011-07-15T21:29:01",
"content": "Agreed, Bob… Actually, I basically second everything youjust said… Where’s the video, dammit? ;D",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "418125",
"author": "Caleb Kraft",
"timestamp": "2011-07-15T21:35:49",
"content": "@Bob and Mikey,Yeah, we really wanted a video too.",
"parent_id": "418120",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "418127",
"author": "Kris",
"timestamp": "2011-07-15T21:42:28",
"content": "Awesome – I was wondering if something like this would work. If you capture the pulse signal from the transmission you won’t even need a temperamental GPS module. pulse = delay. I would suspect it would be as accurate or better. – Kris",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418130",
"author": "NatureTM",
"timestamp": "2011-07-15T21:48:14",
"content": "I guess then things get a little mixed up when someone does a video of a POV project. Every frame of the video has a shutter duration (or sampling period or sensor stabilization period, whatever), so light painting would then occur during every frame as the shutter for that frame is open.I think that’s an issue why CG video looks strange. If an object is moving on film, the individual frames are blurred with motion, but on say a video game, every frame is rendered as it is at a given moment, and it looks strange. I know some games have post-processing to “fix” this issue, but it never looks right to me.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418144",
"author": "JulsPower",
"timestamp": "2011-07-15T22:14:58",
"content": "Note on how they silly insist on the arduino-compatible….even when not use they promote it",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418149",
"author": "B",
"timestamp": "2011-07-15T22:22:28",
"content": "That’s a really high quality font/rendering job! Way better than most. Did they use prebitmapped fonts or something? Usually the displays look like crap…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418150",
"author": "Pete",
"timestamp": "2011-07-15T22:22:33",
"content": "This is really neat. Having worked in autoracing I am surprised they were allowed to install it in a race car but, still cool. Nice build, Alex.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418179",
"author": "Hirudinea",
"timestamp": "2011-07-15T23:36:51",
"content": "I hope they check the messages before they load them into the system, imagine the what the driver would think when his pit crew tells him his car just displayed the message “I’m playing with my stick and I LOVE IT!”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418189",
"author": "D_",
"timestamp": "2011-07-15T23:55:10",
"content": "Of course if a human can read the text as the car passes it’s POV. To call the the selective use of a shutter speed to capture the effect with a camera to call it light painting, and not POV is invalid in IMO. Would they then call the the selective use of film, and shutter speed to capture lower paced activity without blurring light painting as well? Light painting certainly isn’t POV, but I wouldn’t say POV can be light painting.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418223",
"author": "RoboGuy",
"timestamp": "2011-07-16T02:11:14",
"content": "@Caleb Agreed.If it were given a similar name, light painting would be called Persistence Of Shutter. I think I just figured out why light painting doesn’t share naming conventions with POV.The OP is pretty dang cool.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418227",
"author": "KillerBug",
"timestamp": "2011-07-16T02:33:53",
"content": "I hope that this fails miserably…I don’t want to see a race where every car is flashing out advertising all over the track.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418232",
"author": "password",
"timestamp": "2011-07-16T02:47:06",
"content": "it all looks very sci-fi’ish , i love it",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418250",
"author": "Marco",
"timestamp": "2011-07-16T04:18:33",
"content": "Loving the hidden messages “s’Gas ist rechts!”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418265",
"author": "Alex",
"timestamp": "2011-07-16T05:44:38",
"content": "Actually there are two videos in the detailed howto. Here is one of the first prototype:http://vimeo.com/25982635",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418285",
"author": "xorpunk",
"timestamp": "2011-07-16T08:14:53",
"content": "nice..good luck with your marketing campaign..I usually don’t take interest in POV cause it only has social application..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418295",
"author": "stevie",
"timestamp": "2011-07-16T08:47:08",
"content": "“the we don’t often see a GPS sensor built into a POV display” – what?Video please.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418361",
"author": "Panikos",
"timestamp": "2011-07-16T14:19:08",
"content": "I wish the intent of this was to provide race stats for each car, speed, position, g forces etc. If you oversize it so it can be seen from far away it would be cool for the spectators.Even better if they ditched the POV entirely and had a pair of glasses (or similar) superimposing info with Augmented reality enabled app that provided this info as you looked at each car.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418374",
"author": "Pedro",
"timestamp": "2011-07-16T15:30:07",
"content": "From the build log:“It’s almost invisible to the human eye. If you look at the car at a 90° angle while the car is passing by, you can see a couple of characters, but it’s not really possible to read something. So, you need to take a photo.”That’s a shame, because the results look amazing. At least it will probably prevent this being used for advertising more frequently. For now, anyway.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418420",
"author": "Microguy",
"timestamp": "2011-07-16T17:28:23",
"content": "This is going to bring a whole new level to the advertising. Not only text displays, but also regular color graphics. Instead of stickers on the car, companies will be paying big bucks for advertising time on the display, the most expensive will be as the car crosses the finish line of course.They’ll have “display sticks” (the set of LED’s), on the sides and probably one on the hood or the top of the car also.You won’t be able to look at (or photograph) a car on a track without seeing an advertisement.It’s only a matter of time before we get high resolution 16 bit color displays.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418422",
"author": "Microguy",
"timestamp": "2011-07-16T17:34:56",
"content": "One more thing, if they’re displaying statistics from the car, shouldn’t they be able to display the SPEED?? And do away with the GPS?if anything, I’d use the GPS to select the message, based on the position on the track.I’d think the speed sensors from the car would be better than using the GPS to determine speed anyway.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418470",
"author": "Joe",
"timestamp": "2011-07-16T20:28:28",
"content": "Track and Field championships have been using this for many years on the finish line. The finish line camera takes a very small (1″) wide picture of the finish line and extends it along a time axis so you can see precisely where each runner finished in a time encoded image. For a while now they have a 1″ wide flickering LED array on the sideline next to the finish so that advertising is superimposed behind the runners as they finish.It looks like just flashing to the outside observer, but shows up well in the image (see below link).http://www.runblogrun.com/assets_c/2010/08/Rudish,%201;41.01,%200110041-thumb-400×250-539.jpg",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418524",
"author": "Dracc",
"timestamp": "2011-07-17T01:18:15",
"content": "The reason for the GPS as opposed to internally generated speed data is this system can be applied to any car. Easy wirefree install on a race car, or a 67 VW Beetle, if you wanted.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418607",
"author": "jaqen",
"timestamp": "2011-07-17T07:35:30",
"content": "reading the comments it seems that it doesnt work that well:“Q: Great Job with that POV!How much do you need to concentrate to see the messages when just watching the car? You don’t actually need to take a photo, right?Also what speed is needed to be able to see the messages?A: It’s almost invisible to the human eye. If you look at the car at a 90° angle while the car is passing by, you can see a couple of characters, but it’s not really possible to read something. So, you need to take a photo.I haven’t tested it slower than 30 km/h but it should already work at 15-20km/h.”Though its not clear to me wheter the one answering is the blog author or not",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,142.541857
|
||
https://hackaday.com/2011/07/15/cheap-voice-controlled-lighting/
|
Cheap Voice-controlled Lighting
|
Mike Nathan
|
[
"home hacks"
] |
[
"attiny",
"automation",
"AVR",
"voice recognition"
] |
Voice-controlled home automation doesn’t have to be wildly expensive if you have a little bit of time and some know-how
to do the job yourself
. [jjshortcut] wanted to control the lighting in his room without using physical switches. On his blog, he describes how he did it without spending a ton of money.
He picked up a VRBot speech recognition module on eBay, which is an easy way to get your feet wet with voice control. The device has a bunch of built-in speaker independent commands, as well as the ability to record up to 32 custom triggers. Rather than mess with mains voltage and build his own light relays, he purchased a simple set of wireless light switches and began hacking.
He spent some time sniffing the wireless communications protocol to figure out how the lights were triggered, then he replicated that functionality using an AVR and a cheap 433 MHz module.
The system seems to work quite well despite how cheaply he was able to put it together. Stick around to see a quick video of his voice recognition system in action.
[youtube=http://www.youtube.com/watch?v=uKVuMxKY_bE&w=470]
| 9
| 8
|
[
{
"comment_id": "418124",
"author": "wifigod",
"timestamp": "2011-07-15T21:35:39",
"content": "What’s “cheap”? The VRbot is the older version, with EasyVR being its successor. EasyVR is right around $60US, not sure about across the pond. I wouldn’t exactly say that $100 (added $30 for RF outlets and various components) ‘cheap’. It’s DEFINITELY approachable and ‘affordable’, but not ‘cheap’.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418133",
"author": "jjshortcut",
"timestamp": "2011-07-15T21:55:10",
"content": "For the record, I used the EasyVR module, in stead of the earlier VRbot.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418151",
"author": "thundercat",
"timestamp": "2011-07-15T22:24:52",
"content": "Hey, besides EasyVR, what other voice recognition technologies are on the market?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418281",
"author": "Bogdan",
"timestamp": "2011-07-16T07:26:01",
"content": "I do think it is reasonably cheap. Whatever solution you would use, it would still some form of controlling, so the radio sockets can stay.And what could possibly make for a cheaper recognition system than the 40 Eur module? A computer with some software? That would mean it has to run all the time which is inconvenient and costly.Actually, I would like to know how the module performs under real life where there might be some noise and bad speakers…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418301",
"author": "Jelle",
"timestamp": "2011-07-16T08:54:21",
"content": "Actually, If could have been even cheaper if he hacked the rf transmitter from the set instead of using a separate 433 module. I’m not sure if there are 7 available ports on the uC he used, but that would have avoided the oscilloscope buggering.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418335",
"author": "jjshortcut",
"timestamp": "2011-07-16T12:09:35",
"content": "I have thought of doing that to yes, it might be a hack but definitly not a nice and decent system that way.. And the 433MHz modules aren’t that expensive..",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "897697",
"author": "jason",
"timestamp": "2012-12-05T14:06:28",
"content": "How can i do the replication of the module 433mhz",
"parent_id": "418335",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "795891",
"author": "Brandon",
"timestamp": "2012-09-25T15:17:21",
"content": "How can you make the microphone portable? For example, you want to “command” anywhere in your house?I am PLANNING to try using wireless microphone but i dont think it will work. I would try it though. Any suggestions???",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "1093572",
"author": "ARAVIND",
"timestamp": "2013-11-07T13:58:34",
"content": "CIRCUIT DIAGRAM OF VOICE CONTROL LIGHTING SYSTEMPLEASE",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,142.480465
|
||
https://hackaday.com/2011/07/15/arduino-video-sampler/
|
Arduino Video Sampler
|
Brian Benchoff
|
[
"Arduino Hacks",
"Video Hacks"
] |
[
"arduino",
"video sampler"
] |
[gijs] sent in
an Arduino video sampler
he’s been working on. The sampler is able to capture, pause and play a short video forwards and backwards.
The video capture circuit is based on the
Nootropic Design video experimenter
. We’ve seen
a few project
use this video experimenter board, but never with such
smooth video
. The sampler samples frames at a resolution of 128×96 and stores everything in a 256Kbit SRAM. A back-of-the-envelope calculation tells us that the sampler can hold a little under a second of video, more than enough to do something cool.
[gijs] says there is a 1 bit version and a 1.5 bit version of his video sampler. While we’re busy wrapping our minds around what half a bit is, he’ll be upgrading the 1.5 bit version to 2 bits. He’s also ordered some PCBs and expects to have a kit out by October. Check out a demo after the break.
[vimeo
http://vimeo.com/26420870%5D
| 15
| 15
|
[
{
"comment_id": "418081",
"author": "Philippe",
"timestamp": "2011-07-15T19:11:38",
"content": "Hmmmm… 1.5 bit is 3 bits for two pixels ?That would give 3 “colors” per pixel : black, white and gray.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418085",
"author": "Philippe",
"timestamp": "2011-07-15T19:19:09",
"content": "… not really …",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418087",
"author": "john",
"timestamp": "2011-07-15T19:21:10",
"content": "Wow. I really want one of these. I’m totally going to order one. Btw, does anyone know how he made those slick buttons?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418090",
"author": "password",
"timestamp": "2011-07-15T19:31:55",
"content": "@john seems to be regular push buttons with a cap on which seems engraved/melted to show the white underneath. I’m just guessing here",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418092",
"author": "spag",
"timestamp": "2011-07-15T19:35:15",
"content": "Could anyone explain this fractional bit concept? Is he just using 3 bits for every 2 pixels or what? That would be odd… you’d have to choose 8 2-pixel brightness combinations to support.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418104",
"author": "gijs",
"timestamp": "2011-07-15T20:34:17",
"content": "about the 1.5 bits.. there are two ram chips, both store the 1 bit video data, but the two bits are not encoded, so when the video is outputted it just gives 3 colors gray-scale instead of 4.i made the buttons by spray painting white buttons black, then wait a little and scrape something on the button, wait a little more and spray-paint with transparent paint.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418192",
"author": "jordan",
"timestamp": "2011-07-15T23:59:39",
"content": "omg that is cool! i love it",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418195",
"author": "svofski",
"timestamp": "2011-07-16T00:15:35",
"content": "You should have used the indelible girl from Ringu 2 for the example.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418196",
"author": "svofski",
"timestamp": "2011-07-16T00:17:37",
"content": "P.S. really awesome job!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418231",
"author": "KillerBug",
"timestamp": "2011-07-16T02:46:01",
"content": "Neato…I wonder what he could do with an old 4MB SIMM…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418323",
"author": "hboy007",
"timestamp": "2011-07-16T11:05:09",
"content": "This is really good! I wonder why so few comments are here.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418331",
"author": "strider_mt2k",
"timestamp": "2011-07-16T11:43:57",
"content": "Half a bit would be like…6.25 cents on the shave and a haircut scale, wouldn’t it",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418923",
"author": "SynthShoppingDotCom",
"timestamp": "2011-07-18T04:53:43",
"content": "If anyone has spare time, try poking around on Gijs’ site. The man is a creative genius. I’ve been lucky enough to meet him a few times.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "419075",
"author": "octel",
"timestamp": "2011-07-18T09:15:46",
"content": "Gameboy Camera, anyone?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "776597",
"author": "Michael Bradley",
"timestamp": "2012-09-08T16:49:03",
"content": "Its like instagram for video ;)Great work, I love it, inspires me to try and do some more experimenting.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,142.32014
|
||
https://hackaday.com/2011/07/15/surplus-bazooka-converted-to-shoot-firework-artillery-shells/
|
Surplus Bazooka Converted To Shoot Firework Artillery Shells
|
Mike Nathan
|
[
"Weapons Hacks"
] |
[
"bazooka",
"fireworks",
"mortar"
] |
[Mark] and his friends love fireworks, but got tired of the traditional ground-launched mortar rounds,
so they decided to spice things up a bit
.
A while back he purchased an Army-issue bazooka at a gun show but didn’t use it for much, so it sat unused for about 10 years. He dug it out of storage, then hit up his local hardware store for a few lengths of PVC piping. He cut the pipes to size and then used his 3D printer to build a couple of parts to securely mount the PVC pipe into the bazooka’s shell. With his standard tube, he can shoot 2” mortars from the bazooka, but says he can add a second nested length of PVC to allow for smaller rounds.
Obviously this sort of setup can be quite dangerous if it is mistaken for actual weaponry, or if your fireworks were purchased from some guy’s trunk at a highway rest stop. [Mark] and his friends have taken some precautions when they use the launcher, but this is still clearly a risky enterprise.
That said, we think its awesome, and if anyone has a spare bazooka sitting around, feel free to send it our way!
Continue reading to see the bazooka fireworks launcher in action.
[Correction]
Not a bazooka, it’s an AT-4. Thanks to those who pointed it out.
[youtube=http://www.youtube.com/watch?v=TUdNGFR3cIw&w=470]
| 41
| 40
|
[
{
"comment_id": "418040",
"author": "BirchSama",
"timestamp": "2011-07-15T17:46:13",
"content": "Wha- what? Who buys a bazooka? Is the gun market in USA so loose? We can’t even buy a pistol in EU without 452364 mental exams and certifications.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "479403",
"author": "84 Millimeter",
"timestamp": "2011-10-13T19:38:06",
"content": "Yeah, it’s a constitutionally protected right to bear arms. Some states, you only need a driver’s license to buy arms. Some states, require forms/certifications/training/etc. to purchase just a shotgun. The founders wanted the citizens to be able to overthrow the government if they got out of line. The current government is getting closer to that line everyday. It’s a matter of time before the rednecks start shooting.",
"parent_id": "418040",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "418043",
"author": "a.d",
"timestamp": "2011-07-15T17:49:19",
"content": "Electric ignition would top this off.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418046",
"author": "flaggfox",
"timestamp": "2011-07-15T17:52:23",
"content": "AT-4… not bazooka.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418049",
"author": "mess_maker",
"timestamp": "2011-07-15T17:54:40",
"content": "When I was young I was really into model rocketry and always dreamed of the day when I built my own handheld rocket launcher. Basically, a very similar design to that which you see above, however, I wanted to wire in the ignition switch to a pistol grip. The ignition would use, of course, model rocket ignitors. I am surprised they didn’t do that here. It would make for a pretty cool addition to this project.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418050",
"author": "mess_maker",
"timestamp": "2011-07-15T17:55:26",
"content": "@a.d – you and I have similar thought processes :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418055",
"author": "Neckbeard",
"timestamp": "2011-07-15T18:07:02",
"content": "Mike this is an AT-4 not a Bazooka, completely different weapons systems.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418060",
"author": "Addidis",
"timestamp": "2011-07-15T18:13:51",
"content": "lol! Marco ! ~priceless.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418063",
"author": "Mike Nathan",
"timestamp": "2011-07-15T18:24:42",
"content": "Apologies to those who noticed it is an AT-4.I’m no weapons expert, so I used his description. I figured he had a much better idea of the weaponry he purchased than I would.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418064",
"author": "Volectorus",
"timestamp": "2011-07-15T18:26:48",
"content": "over engineered for just using a tube. no button ignition?Shotty Vid… would have been better during the day.All this safety talk during the vid and the guy lighting the mortars, sticking his head in front of the tube with no mask, gloves or long sleeves.all around fail. just like my grammar.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418066",
"author": "Some Guy",
"timestamp": "2011-07-15T18:31:30",
"content": "The guys on Sons of Guns did a sweet Bazooka conversion too.http://dsc.discovery.com/videos/sons-of-guns-bazooka-videos/index.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418067",
"author": "[lum]",
"timestamp": "2011-07-15T18:36:02",
"content": "We did this with old fireworks tubes and nichrome wire back in the day in highscool. If you shoot at a low atack angle onto the sea the bounce kinda cool. Also the lightshow will reflect in the water. Good way to mix the show up a little!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418068",
"author": "Ben",
"timestamp": "2011-07-15T18:36:04",
"content": "@BirchSama: In the us we can purchase surplus launcher tubes due to the fact that it isn’t classified as a weapon. They’re functionally no different than a spent artillery casing. The rockets on the other hand are classified as weapons and are nigh impossible to legally procure.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418070",
"author": "asheets",
"timestamp": "2011-07-15T18:41:41",
"content": "I presume that the AT4, being a 1-shot weapon, was already used before being sold at the gun show. Otherwise, I would have to ask any lurking NRA members — what exactly do you hunt with an AT4?@mess_maker — I actually did build a hand-held model rocket launcher, and used it 1 time. As I hit the ignition button, it dawned on me that I didn’t want to be that close in the event of a CATO.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418071",
"author": "Anonymonster",
"timestamp": "2011-07-15T18:45:14",
"content": "I must agree with Voletorus. It was quite unprofessional to say the least.That’s not what it was intended for. Thanks to this video, now we’ll just rip your- I mean, “re-engineer” this idea, and put it in the hands of rioters so, thanks ;-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418074",
"author": "Peter",
"timestamp": "2011-07-15T18:48:32",
"content": "What’s wrong with buying fireworks at highway rest stops? When I was in Colorado a couple of weeks ago (just prior to the 4th of July), all the LED signs on every major highway were announcing fire bans, every national forest had signs saying NO FIREWORKS ALLOWED, and every major parking lot had at least one tent selling fireworks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418075",
"author": "ho0d0o",
"timestamp": "2011-07-15T18:49:28",
"content": "LOL This has to make you just a little proud to be an American. ROFL",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418079",
"author": "Don",
"timestamp": "2011-07-15T19:03:35",
"content": "1) Agree that electric ignition would have made this awesome.2) Sons of Guns broke so many NAR rules it wasn’t even funny. The device itself as a pirate dissuader was ludicrous. Worst episode of a normally decent show.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418095",
"author": "D_",
"timestamp": "2011-07-15T19:47:49",
"content": "@BirchSama Basically he bought a strong piece of tubing, worthless for it’s intended military use without ammunition it’s designed to use. The largest terrorist attack in the USA, and probably the world used IMPROVISED weapons. I believe terrorist attacks in the EU used the same sort of weapons. I am a gun owner in the USA who does support reasonable gun laws. but understands they will not stop those bent on harming another.So technically it’s an AT-4, I wouldn’t have a clue, but is HaD supposed to have such a all comprehensive knowledge to know when a builder misidentifies a item?A function trigger would be nice, but manually lighting a fuse allows you to know it’s been lit, and a dud mortar is a dud. Few of use own enough property to be aiming fireworks anywhere but straight up.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418105",
"author": "ENKI-][",
"timestamp": "2011-07-15T20:40:59",
"content": "@asheets The AT-4 is indeed a single-shot weapon. Hunting with it would be ridiculous not because of excess firepower, but because you would have to carry several with you (not to mention that tagging the charred carcasses of the large community of animals and paying the fines for those not in season would be quite a pain). I don’t recommend duck hunting with ICBMs either.While making an AT-4 reloadable may well break all sorts of laws (or may introduce the justification for new ones), this is still fairly interesting for those of us living in places where we can buy that variety of fireworks without a license.As for the people above from the UK or Australia (or the various other places with extremely strict firearm laws), can’t you buy spent shotgun shells? The AT-4 is more like a great big shell casing than a gun; once you fire it the projectile is gone, and you throw it out.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418131",
"author": "jason",
"timestamp": "2011-07-15T21:52:30",
"content": "I had a PVC contraption about 4′ long that had a mortar tube shoved up the back and a quick-disconnect on the rear. We pipe-clamped a model rocket launcher (pushbutton ignition) and used ignitiors (as mentioned earlier) and it was awesome.We were young and dumb though, driving through the desert out the sun roof shooting it at each other. Fortunately nobody got hurt…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418132",
"author": "Anon",
"timestamp": "2011-07-15T21:54:05",
"content": "This is just dumb. Those are class A fireworks. If they misfire anywhere near you, you are going to get hurt.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418138",
"author": "Hackerspacer",
"timestamp": "2011-07-15T22:08:24",
"content": "I would use a fiberglass tube instead of PVC for the inside but the outer (actual AT-4) housing *SHOULD* be more than sufficient to handle the *launching* of the firework without issue. What I worry about would be the detonation of a mortar shell INSIDE the tube. Meaning the lift charge failed to ignite but the charge went off. These appear to be typical consumer level fireworks so the maximum load is more limited but I could still see this going fairly badly for the holder if things don’t fire perfectly.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418141",
"author": "Hackerspacer",
"timestamp": "2011-07-15T22:11:22",
"content": "“or if your fireworks were purchased from some guy’s trunk at a highway rest stop”So…. made in China under amazing quality control conditions (hah right) is going to ensure 100% functional fireworks. Very, very, very few people make homebrew fireworks for sale and even fewer still also sell them at rest stops. Obviously your point was illustrative not literal but my point is that fireworks quality control for consumer shells is… lacking.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418145",
"author": "Hackerspacer",
"timestamp": "2011-07-15T22:15:43",
"content": "“class A fireworks”There is no official term for “class A fireworks”“Big shells”Old name: Special Fireworks – Class B – UN0335 – Display Fireworks -1.3G“Consumer level fireworks”Old name: Display Fireworks – Class C – UN0336 – 1.4GAlmost every firework available to purchase in America without a special permit is considered a 1.4G or Class C firework.The mortar in the photo is a 1.4G, consumer level mortar shell.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418146",
"author": "Hackerspacer",
"timestamp": "2011-07-15T22:17:12",
"content": "Bah I screwed up the formatting. Add Common Fireworks to the 1.4G category as that is the formal new name in the USA.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418147",
"author": "b1r6m4n",
"timestamp": "2011-07-15T22:19:52",
"content": "WOW – I am surprised the HaD community is not absolutely freaking out about safety like you normally do! Wish it could always be like this…Who cares if the mortal blows up in the barrel? The whole things metal… mortars are not THAT strong!It always makes be laugh when people are surprised about our ability to own weapons… I feel sorry for you all! The right to bear arms is a wonderful privilege.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418163",
"author": "jethomson",
"timestamp": "2011-07-15T22:49:46",
"content": "I love artillery shell fireworks, but this is stupid. Sure this is a rock solid mortar, and if the shell explodes inside it you’ll probably be fine, but when the shell explodes a mere ten feet after it leaves the barrel maybe then they’ll understand why the instructions say “Get away!” I have several old shells that don’t get any altitude anymore so I have to run like hell when I light them.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418177",
"author": "aztraph",
"timestamp": "2011-07-15T23:30:52",
"content": "1. cool mod of an AT-4 to launch mortar rounds (if not completely insane).2. it would be more impressive to turn fireworks into an actual round that was DESIGNED to be launched from an unmodified AT-43. as long as i’m being stupid, what’s with this “Safety first” shit in the video, if you want to make it safe, DON’T DO IT! one misfire and that plastic shield over the face is gonna get melted to it, if it doesn’t blow apart and take your ear off.forget i said number 2. i don’t want anyone to get killed trying it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418193",
"author": "jordan",
"timestamp": "2011-07-16T00:05:11",
"content": "this would be the bees knees for teenage boys. i bet they are thrilled with it.let the kids enjoy their explosives. at least one of them had a face shield. that’s better than most young explosion enthusiasts.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418194",
"author": "localroger",
"timestamp": "2011-07-16T00:14:53",
"content": "I actually have one of these exact same tubes. I was thinking more of maybe making a shoulder mounted Newtonian telescope out of it one day — it’s perfectly balanced for something like that — but it will probably just sit on my desk until the SWAT team notices it.These tubes are not only inert like spent casings, they are “demilled” so they can’t be rearmed; mine was cut nearly apart in four places and patched back together, and the arming mechanism was severed. So it’s basically just a military themed fiberglass tube. Does freak out the unclued-in visitors though :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418197",
"author": "No name this time",
"timestamp": "2011-07-16T00:19:51",
"content": "I built a much smaller, electric ignition, launcher using a modified mortar shell with additional payload. It was is way cooler. Just like a zip gun, you should do several tests using a string before you even dream of holding it when launching. I learned a lot, and will make many improvements next time. Also, have you ever seen someone put the mortar in the regular tube upside down?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418235",
"author": "KillerBug",
"timestamp": "2011-07-16T02:53:27",
"content": "A psychotic redneck with a rocket launcher…god bless the USA!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418298",
"author": "RO0T",
"timestamp": "2011-07-16T08:49:56",
"content": "Isn’t an AT4 usually a single use weapon?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418304",
"author": "ZeUs",
"timestamp": "2011-07-16T09:15:49",
"content": "“A while back he purchased an Army-issue bazooka at a gun show but didn’t use it for much”Haha, What would you do with a bazooka? Blow stuff up?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418532",
"author": "cliff",
"timestamp": "2011-07-17T02:16:08",
"content": "@killerbugDon’t knock rednecks with weapons, that basically describes our founding fathers.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418680",
"author": "WillS",
"timestamp": "2011-07-17T15:18:34",
"content": "I don’t think people understand that even consumer fireworks can be quite dangerous. I do a lot of firework shows and I can tell you with great certainty, if for any reason one of those mortars fails to leave the tube and goes off while in the tube, you are holding a pipe bomb and PVC shrapnel will tear you up. Seen it before.The only pipe rated for fireworks of the sort is HDPE pipe which is a pain to get a hold of, at least where I live. However, it is much safer and shreds when a mortar explodes in it.I’d just encourage people to be careful with that. I’ve done some stupid stuff with fireworks, but this is one that can really mess your day up.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418735",
"author": "Nitori",
"timestamp": "2011-07-17T17:56:01",
"content": "Pretty cool idea I once did the same thing but completely out of PVC and an iron pipe I also added a nichrome wire for ignition.Oh and to people who piss and moan they broke rules and that the biggest terrorist attack ever was by improvised weapons.They’re only simply trying to have fun.If you threw everyone who broke said NAR and weapons rules at one point in time in jail you’ll end up jailing about 80% of the people who later go on to become engineers.It would be a great way to start a second dark ages.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "419079",
"author": "octel",
"timestamp": "2011-07-18T09:23:38",
"content": "@WillSEven if something goes wrong, how is this a pipe bomb? The pipe is wide open on one end!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "419808",
"author": "Doktor Jeep",
"timestamp": "2011-07-19T19:53:36",
"content": "Be careful. We live in a country where the ATF is known to go into a house and declare common household objects as “bomb-making materials” or “destructive devices”. It’s usually for politically motivated raids where they need to scrap real deep and dig up anything they can use. Of course the typical braindead jury, already shocked and awed by the fact of a raid in itself, goes thinking “well they had send SWAT in the first place so the defendant MUST be guilty”.I would recommend that any de-milled weaponry, even if legally purchased and all that, not be in your possession in the coming times of the state needing to fill its prison system (fast becoming one of the few industries left). Using it for hacks that can shoot something is asking to have some halfwit agent in your garage going “oh looook! We have a device here! Woohoo! Now we can take everything else this guy has! I want dibs on his computers!”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "665863",
"author": "Matz05",
"timestamp": "2012-06-01T22:11:23",
"content": "Sadly, that, while exaggerated, wouldn’t surprise me anymore. In the US or in Canada (where I don’t think an empty rocket tube would EVER have not got you shot, unless you were somewhere the police weren’t allowed guns!) OK, I exaggerate too. But Canada is basically a hippie USA these days (much more danger-shy, slightly less fascist, no idea which is better), and so they are cracking down on everything pretty much in lockstep with the US, just to differing extents.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,142.268814
|
||
https://hackaday.com/2011/07/11/controlling-a-counter-top-water-distiller-with-salvaged-parts/
|
Controlling A Counter Top Water Distiller With Salvaged Parts
|
Mike Nathan
|
[
"Arduino Hacks",
"home hacks"
] |
[
"arduino",
"water distillation"
] |
Hackaday reader [Kyle] wrote in to share a project he recently wrapped up, involving a
counter top water distillation unit
he uses at home.
He lives in Atlanta, and hates both the taste and contaminants in the water, so using this distiller is an absolute must in his house. The problem with this cheap unit is that it waits until it is completely dry before shutting off the heating element. According to [Kyle] this brings up two huge problems.
First, letting the unit run dry simply vaporizes all of the contaminants that he was trying to remove, allowing them to re-condense and contaminate his fresh water. Second, the heating element reaches extreme temperatures once the water is gone, which causes premature failure of the distillation unit.
He originally used a timer to remind himself to turn off the unit before it ran dry, but the process became tedious. He found that he would often forget to turn off the distiller before it ruined his newly cleaned water.
Looking for another solution, he decided to automate the process using some components left over from an Arduino-based terrarium temperature/humidity controller he built a while back. A salvaged toy clock tower was used as an input dial, which sets the distillation time on the microcontroller. The Arduino in turn manages a set of relays that controls the power supply to the distiller.
While [Kyle] only sent us this information to us via email, he has made
code
and
pictures
available online. We’re sure he would be pretty open to answering any questions you might have related to his build, so fire away in the comments section.
[Update]
After seeing that his distiller made the front page, [Kyle] directed us to
a write up he prepared
, detailing some more specifics on the project.
| 57
| 50
|
[
{
"comment_id": "416298",
"author": "RicoElectrico",
"timestamp": "2011-07-11T22:12:19",
"content": "Pure distilled water is harmful as it leaches out minerals (ie. ions) from your organism!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416303",
"author": "norcalli",
"timestamp": "2011-07-11T22:21:17",
"content": "@RicoElectrico That is only true of deionized water, which if you drank it would suck out ions from your intestines, which is dangerous. Distilled water is essential and clean. Don’t be stupid.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416305",
"author": "RicoElectrico",
"timestamp": "2011-07-11T22:27:41",
"content": "@norcalli Hmm.. So I don’t know something. Is it distilled in chemical sense? If so, then it is deionized as water is polar solvent.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416307",
"author": "norcalli",
"timestamp": "2011-07-11T22:30:07",
"content": "@RicoElectrico Sorry for saying don’t be stupid. I was in a bad mood 15 seconds ago.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416308",
"author": "nebulous",
"timestamp": "2011-07-11T22:31:27",
"content": "So, is that really water at the output, or is the temperature being regulated to suit other, more intoxicating purposes?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416309",
"author": "amp180",
"timestamp": "2011-07-11T22:40:06",
"content": "1. Distilled water is de-ionised, all substances that do not boil below 100°C are left behind.This could lead to the leaching of electrolytes from the blood through osmosis.2. Most contaminents in tapwater (except alcohol. ;| ) boil at far higher temperatures than water, so the distiller would not transfer them, even if overheating, but de-ionised water would quickly dissolved scent and taste molecules from the air pollution and his kitchen.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416314",
"author": "Hackerspacer",
"timestamp": "2011-07-11T22:50:00",
"content": "Distilled and deionized aren’t the same. We run a waterjet that takes water up to 60,000 PSI. We specifically are told to avoid using pure deionized (DI) water in the pump (which is made out of stainless steel) to avoid premature failure of the pump – because DI water is such an amazing solvent. Think of it like chlorine gas. It is so reactive because its outer electrons readily combine with just about anything.This hack is neat but why not just build a proper distiller from scratch rather than zombify / frankenstein this one?Or better yet, buy one that isn’t stupidly designed in the first place?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416315",
"author": "blootac",
"timestamp": "2011-07-11T22:53:07",
"content": "@RicoElectricoDistilled water is simply water that has evaporated, leaving its contaminates behind, then been condensed and collected.Deionised water is physical process using ion exchange resins.http://en.wikipedia.org/wiki/Purified_water",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416321",
"author": "Roberto",
"timestamp": "2011-07-11T23:10:45",
"content": "Will it convert urine and sea water into potable water?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416328",
"author": "Nick H",
"timestamp": "2011-07-11T23:31:56",
"content": "@norcalli, Calling people stupid isn’t nice, and it makes you look foolish when you’re wrong.Distilled water is a form of deionized water, and not all deionized water is distilled. (eg, you can deionize water using revers osmosis.)Depending on the impurity you care about, distilled water is often more pure than deionized water. In a chemistry lab, you often use deionized water for 90% of your operations, and only use distilled water for things that need really pure water.According to the WHO, distilled water is not ideal for consumption because it’s missing magnesium and calcium. However, there aren’t harmful corrosive effects in vitro. Once it hits your stomach its ionic content is a moot point.… don’t use it for your goldfish though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416333",
"author": "Life2Death",
"timestamp": "2011-07-11T23:44:22",
"content": "Why not use a plug-in light timer?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416336",
"author": "Mark",
"timestamp": "2011-07-11T23:51:49",
"content": "Distilled and deionized water aren’t the same. Deionized water is just water that goes through a super-brita filter to remove most of the stuff. It doesn’t do anything to the electron orbitals and doesn’t change its solvent ability. Distilled water is well, boiled and condensed. Distilled water is theoretically nearly pure H20 while deionized water still has some non-polar stuff in it.Deionized water and distilled water aren’t necessarily harmful, the worst risk would be to your teeth from not having fluoridated water.And FINALLY, what sort of contaminates are in your water that also happen to have a higher boiling point than water? Stills work by removing the items from lowest boiling point to highest. Which is why when you distill booze you never drink first part of your condensate because thats all methanol. Off the top of my head I can’t think of a distillable liquid present in tap water that is also soluble in tap water that also has a higher boiling point than tap water.Who cares if your water still boils dry, all thats going to be leftover is salt? Unnecessary.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416345",
"author": "h_2_o",
"timestamp": "2011-07-12T01:00:50",
"content": "distilling water and making a distillery are things to watch out for in the US. Yes owning a distillery under 1 gal for water production only is legal, however depending on the BATF in your area even this can be a point of argument. Anyway if you make one of these and post on the internet about it even if it is for water only be advised of the possibility of the BATF having a knock at your door.again i know it is legal to do this, but i brew as well and have had many good discussion with a local batf agent about distillers.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416349",
"author": "ehrichweiss",
"timestamp": "2011-07-12T01:17:43",
"content": "h_2_o, what are you going on about? This is a commercial WATER distillation unit. The BATF couldn’t give a rat’s ass about you using it for its intended purpose. As long as you’re not distilling ethyl alcohol, they really don’t care in the least.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416352",
"author": "echodelta",
"timestamp": "2011-07-12T01:37:45",
"content": "I have heard that dislilled water will loosen tooth fillings! That was on some science program on TV. When as little one on a trip to some tourist trap sunken gardens or such, I pulled mom over and wanted a drink from a jug type cooler. She said don’t, you won’t like the taste now or tomorrow. Too late, I drank a little Dixie cup full. Next day I still had a distorted sense of taste!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416361",
"author": "Microguy",
"timestamp": "2011-07-12T02:08:51",
"content": "I live above Atlanta, and I HATE the water here. If it drips, it leaves some nasty pink stain, there’s crud in it for sure.But, I have filters, I wouldn’t use a distiller. I think once you take the minerals etc… out, you lose the “flavor” of the water. Depending on the filter you use, you can actually get really good tasting water.I have a purifier I use camping (not a filter), and it turns dirty old creek water into some great tasting stuff.@Roberto, yes. Not sure why you would, but it can do that. I’ve made “stills” for survival situations that will do that also.The “survivor man” thing about drinking your own urine is silly, when you can just distill it pretty easily. The only reason to drink it “from the source” is if you simply can not distill it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416380",
"author": "ed",
"timestamp": "2011-07-12T02:55:32",
"content": "why not use a water filter? that way you have clean drinking water, also distilled water would be without minerals which the body needs",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416383",
"author": "josh",
"timestamp": "2011-07-12T03:04:03",
"content": "While repurposed/salvaged parts are a great idea as it saves things from the trash pile, a time-delay relay could do the job without all the extra parts. A light timer wouldn’t be a good idea since they have on-off times. Left alone, it would turn on during a day that you might not be there which kind of defeats the purpose.I like the repurposed parts, though!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416394",
"author": "Steve Cook",
"timestamp": "2011-07-12T03:55:57",
"content": "There’s lots of myths here about distilled and de-ionized water posted here.1) De-ionized water is more pure than distilled. If this were not the case, you’d be chiseling your posts on stone and mailing them, as DI water is used to rinse silicon wafers after the etching process and has to be pure at the 5-log level. Depending on the conductivity of the feed water, DI resins will purify way beyond what a distiller will do and without the scaling that distilling leaves.2)Distilled and de-ionized water will not harm you. Both are chemically the same, only having used different processes (distillation vs ion-exchange) to purify water.Also, the body does not absorb minerals from water (or enough to make a difference, anyway). Drinking ultra-pure water will not hurt you. Assuming you eat a balanced diet with fresh fruits and vegetables, you get all the vitamins and minerals you need. vitamin supplements, as well as minerals in water go right through your system.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416404",
"author": "lou eney",
"timestamp": "2011-07-12T04:16:27",
"content": "@Steve Cock1. so you’re implying we wouldn’t have papyrus and ink as well?2. i’ve seen bear grylls drink his own piss and survive, i’d take his word before I’d trust anything you sayLou Eney out!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416406",
"author": "Steve Cook",
"timestamp": "2011-07-12T04:19:32",
"content": "@Lou Eney:1) No I wasn’t,and2) I didn’t mention anything about drinking one’s own piss.Nice bit of trolling, though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416416",
"author": "Kyle",
"timestamp": "2011-07-12T05:05:40",
"content": "Well spoken, Steve Cook. I was about to start a reply about the properties of this water until I got to the bottom of the comment list.I would like to respond to why I chose distilling over filtration. I calculated that replacement filters would be more expensive than the cost of energy to run this still. More importantly, filter effectiveness also steeply drops off and can actually increases the concentration of certain compounds as the filter gains more use. Bacteria are also known to colonize filters, although this is reduced because of all the Cl+, fluoride, etc. in the tap water.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416418",
"author": "Hackerspacer",
"timestamp": "2011-07-12T05:18:19",
"content": "“i’ve seen bear grylls drink his own piss and survive”No. You haven’t. You have seen him through a television. Which is edited. You can’t definitively state you have seen him drink his own piss and survive. You knew nothing about his metabolic condition and further, you know for a fact that, AT MINIMUM, he has a camera crew with him.I am not calling you a liar but I am saying that what you are saying isn’t accurate.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416421",
"author": "Hackerspacer",
"timestamp": "2011-07-12T05:19:54",
"content": "As to this hack – something tells me that children’s clock isn’t *exactly* industrial grade. Um, yes.. insurance company. Well, you see, my house burned down because uhh yeah….electrical short. That’s right. Absolutely no chance it was a hacked together water distiller.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416422",
"author": "Hackerspacer",
"timestamp": "2011-07-12T05:21:29",
"content": "And please understand, I am in no way attempting to perpetuate the myth that hacked together is inherently unsafe. But sometimes you look at a hack and have to at least go… uhhh… is this a good idea? I get that feeling just looking at this thing. I think it’s the brightly colored plastic combined with the reputation that children’s toys have for… well lack of quality control and breaking.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416434",
"author": "Nick H",
"timestamp": "2011-07-12T05:35:57",
"content": "It probably true that DI water can be more pure than distilled, but that isn’t always the case. I’ve been at two public universities where (triple?)distilled is preferred over house DI for certain experiments. Good point on the efficacy of a resin column though.But, it’s very well established that minerals in water have dietary value. Here’s the WHO review I referred to earlier (not peer reviewed, but feel free to dig into any of the citations that are):http://www.who.int/water_sanitation_health/dwq/nutdemineralized.pdfSure, pure water won’t hurt you, but it’s false to say that the minerals don’t offer a positive health effect.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416439",
"author": "M H",
"timestamp": "2011-07-12T05:54:06",
"content": "[Disclaimer – I can’t read the picasa album at the moment, so this is just based on the hack a day summary.]This seems pretty energy inefficient.Since he is in Atlanta, why use a still, rather than a dehumidifier to get purified water?Certainly some care would be necessary to find a dehumidifier that produces potable output. But such devices do exist (I have seen booths for them at commercial festivals). In summertime using a dehumidifier would have the added benefit of making the living area more pleasant. (Lower humidity makes it feel less hot.)If using a still – is it more energy efficient to have the still inside (in a presumably air conditioned space – where the heat from the still makes the room even hotter, and adds air conditioning load), or outside (where the outdoor air temperature aids boiling (a little), but the condenser is a little warmer).And how does the cost of distilling it compare to just buying commercially distilled (or otherwise purified) water.Of course the still might still be useful in the wintertime (rather than just using a heater.)(Now if one wanted to get really fancy with a still, one could use the energy saving tricks like they do in a Multi-stage flash distillation plant – lowering pressure to reduce the boiling point, recover heat from outgoing water, etc. Put all that together and you would have quite a hack.http://en.wikipedia.org/wiki/Multi-stage_flash_distillation)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416442",
"author": "Kyle",
"timestamp": "2011-07-12T06:02:16",
"content": "RE:M HI do not know for sure that a dehumidifier could collect the amount of water that I and the people I live with drink, but I do know that commercial water is contaminated with BPA and other toxins that leach from the plastic container it’s stored in. That’s even more true with distilled water.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416449",
"author": "therian",
"timestamp": "2011-07-12T06:34:29",
"content": "I dont want government to alter my conciseness using water. When I was purchasing distiller I went on long research and found out most distillers made in China with no name and no purity standards in material and they sell it to other companies so they put their label on it. This particular unit in article is one of them, I highly recommend to look for USA made product all from stainless steal instead this questionable heath hazard machine.P.S. Distilled water danger is myth, originated from single doctor without proof based on assumption that in nature there is no pure water and repeated over and over as fact.. Animals het their minerals mostly from food so there is no know danger in drinking distilled water",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416450",
"author": "Climate Change Kills",
"timestamp": "2011-07-12T06:39:19",
"content": "It is a incredible waste of energy to have to do this just to drink.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416451",
"author": "therian",
"timestamp": "2011-07-12T06:42:27",
"content": "@ed “why not use a water filter?”short answer: home filtration is a scam, it does filter out living organisms not chemicals but boiling water kill them as well and leave nasty staff in water",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416453",
"author": "Climate Change Kills",
"timestamp": "2011-07-12T06:47:41",
"content": "It looks like a table top amusement park from hell..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416457",
"author": "therian",
"timestamp": "2011-07-12T06:49:18",
"content": "@Climate Change Killsdont you brain worth it?, in US they put florine now in bottle water too. Otherwise you can let government calcify you pineal gland, most people have rock in brain by age of 20 they even use it for x-ray to find brain tumor by looking if calcified gland in a center of pushed by tumor aside. And it not that expensive it cost me ~50C for a gallon comparing 1.50$ for bottle water",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416458",
"author": "therian",
"timestamp": "2011-07-12T06:50:04",
"content": "*fluoride",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416491",
"author": "voodoo",
"timestamp": "2011-07-12T08:55:46",
"content": "@therian Do you believe everything you read on wikipedia or only the stupid bits?I must add my voice to the masses here, this seems to be an awful waste of energy just for drinking water. I can entirely sympathize with shitty water, we have it where I am as well, but we just filter it. Works fine and tastes about a billion times better.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416504",
"author": "Gerrit Coetzee",
"timestamp": "2011-07-12T09:34:34",
"content": "You guys are confusing distilled and deionized water for ultrapure water. Ultra pure water is the stuff that has nothing in it but H2O and is unsafe to drink because it leaches minerals from your body (it also tastes absolutely terrible). This stuff is very expensive and can’t be made easily at home. It’s used mainly in the semiconductor industry.http://en.wikipedia.org/wiki/Ultrapure_Water",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416518",
"author": "MrX",
"timestamp": "2011-07-12T11:04:41",
"content": "@RicoElectrico Exactly, people who drink distilled water should complement it supplementary minerals. Your organism doesn’t only need H2O, but also all other minerals that come dissolved in regular mineral water.@norcalli Don’t be a jerk, you can have distilled water *not* deionized.Deionized water is good for the organism if not consumed regularly (one time each two month is ok). It is used for cleaning toxins from your body.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416525",
"author": "t-BuLi",
"timestamp": "2011-07-12T11:23:55",
"content": "As Gerrit Coetzee said there seems to be an awful lot of confusion going around here.First thing to mention is that the only difference between properly distilled and deionized water is that deionized water can still have non-ion impurities (eg sugar) if the deionization process isn’t complimented with other filters.@RicoElectrico & @norcalli & @Gerrit Coetzee : distilled/deionized/”ultrapure” water alone does not leech minerals out of the body, your kidneys do. Drinking excessive deionized/distilled water makes it easier for the kidneys to allow minerals to escape (osmotic pressure plays a part in this). It only becomes a real problem if you do not replenish those minerals through other intake such as food (which they should be if you’re eating healthily). It has been suggested that osmotic shock could also cause intestinal issues but there are mixed results in the research.@Hackerspacer : DI water/distilled water is no more reactive than normal tap water and is especially much much less reactive than chlorine gas (which is scary stuff). The solubility of water comes from the fact that water is a rather polar molecule, not because outer electrons are being transferred or “combined” (which would be chemical reactions and result in you no longer having water). The reason pipes may encounter problems when DI/distilled water is run through them is if the pipes themselves are not properly connected and mixed metals occur where electrochemistry can take place with the naturally occurring self ionization of water (ie hydrodronium and hydroxide ions).@therian : What?! Foremost, the “cheap” filters found in the pitchers often just contain activated carbon which tends to absorb many chemicals, that’s why they use it orally to treat poisonings and overdoses. Secondly the calcification of the pineal gland occurs with or without fluoride as it’s been shown to consist of not just fluoride but calcium, phosphate, and carbonate.More on topic, the point of this hack was to take something which was done manually beforehand (switch off the distiller early) and the automate it. I believe it was accomplished successfully. Leaving the vaporizer on too long and thereby vaporizing some of the chemicals in the water is quite possible but it wont vaporize any minerals originally present (if you’re vaporizing mineral salts you have more serious issues at hand than bad tasting water) so it must be some of the chemicals they treat it with that’s ruining the taste. This brings to mind that, as mentioned earlier, activated carbon filters could likely do it for much cheaper.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416531",
"author": "fartface",
"timestamp": "2011-07-12T11:37:18",
"content": "“He lives in Atlanta, and hates both the taste and contaminants in the water, so using this distiller is an absolute must in his house”And almost ALL carbon block filters are not only good at fixing thins but far more efficient.This was a bored person who decided to make a rube goldberg device out of a pile of junk.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416532",
"author": "fartface",
"timestamp": "2011-07-12T11:40:29",
"content": "@therianYou sound nuttier than the UFO people.I have a degree in water chemistry and worked for 10 years at a water filtration plant. I know a metric ton more about water, water purification, and flouride addition than you do. Compared to me you are a 3 year old.You are 100% wrong and completely and totally on the Nutter side. Stop reading the internet and start reading real books.Oh and that tin-foil hat you wear, It does not stop the aliens from reading your mind.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416536",
"author": "fartface",
"timestamp": "2011-07-12T11:48:11",
"content": "@kyle. you calculated wrong or you intentionally looked for the most expensive ones available.You buy a under sink carbon block filter. they are only $6.95 and filter nearly 1000 gallons of water. you plumb that in to a secondary faucet. total spent to install, $60.00 if you buy cheap stuff. Of it you are a nutter and cant use copper or PVC pipe for the water, $27,500 for special Mason blessed anti reverse ion generating silver pipes and Alien technology reverse wave filtration system that has sonic disruption resonators with a UV sterilization faucet tip.Normal people go for the PCV pipe, cheap $30.00 faucet and $20.00 filter and housing under the sink. 1000 gallons between filter changes. Want to go even cheaper buy a 55 pound bag of activated carbon and make your own filter housing out of layers of T-shirt, screen and some PVC again. fill it with activate carbon, run water through to flush out the dust and now for $0.23 you made a larger activate carbon filter that will filter easily 1000 gallons of water .TaDa! Tasteless, ODerless, Chlorine Free as well as almost everything else, you need to add a 0.5 micron filter after that to get rid of everything, but those are only for labs or nutters.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416542",
"author": "Natalie",
"timestamp": "2011-07-12T12:12:42",
"content": "Next Topic, lets get out our dowsing rods to better understand water chemistry ;-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416548",
"author": "Kyle",
"timestamp": "2011-07-12T12:22:56",
"content": "A .5 micron filter is not pure enough for me, as many viri and bacteria can pass through that with ease.Also, anything constructed with water coming into contact with plastic parts is out.Carbon filters also don’t remove contaminates such as fluoride, pharmaceuticals, and metals, to name a few.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416567",
"author": "blue carbuncle",
"timestamp": "2011-07-12T13:19:02",
"content": "Wall wart “vacation” outlet on/off timer. Ya can get a mechanical one from the Dollar Tree for a buck. A digital one from a major retailer shouldn’t bust the $10 mark. Plug that into the wall and plug the destiller into that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416593",
"author": "Hackerspacer",
"timestamp": "2011-07-12T14:47:45",
"content": "“DI water/distilled water is no more reactive than normal tap water and is especially much much less reactive than chlorine gas (which is scary stuff).”So your argument is that pure almost completely non conductive DI water will corrode steel at the exact same pace as normal tap water?I am sorry but you have no idea what you are talking about.My point about chlorine gas was to make an analogy that DI water was highly reactive compared to normal tap water. Not reactive in the sense that the results are spectacular or fast but reactive in the sense that, well, DI water likes to react with things to pull ions out of it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416599",
"author": "therian",
"timestamp": "2011-07-12T15:13:28",
"content": "@fartfacecan you contribute something morethan insult ?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416610",
"author": "steve",
"timestamp": "2011-07-12T15:45:17",
"content": "That’s what I call a HACK! Aye!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416623",
"author": "ScottinNH",
"timestamp": "2011-07-12T15:59:02",
"content": "Carbon filters would solve this. I have a tall carbon filter with brass quick disconnects, and run my brewing water through. Otherwise I get varying amounts of chlorine/chloramine in my water, which is foul to begin with (but worse when the chlorines pass through fermentation… awful band-aid taste).You can get carbon filters installed in your basement, or under your sink. A Dual filter works even nicer, and the filters last longer.For those that worry about minerals, you can put those back into the filtered/distilled water, and with the right mineral ratios you can emulate water from Berlin, London, Burton-on-Trent, Dusseldorf, Plzen etc. :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416627",
"author": "Steve Cook",
"timestamp": "2011-07-12T16:05:29",
"content": "The difference between filtered and purified water is an extreme lack of understanding that I saw time and time again when I worked in the water filtration business. Most people never took chemistry in high school or college, so understanding how nature governs chemical reactions leaves for a lot of myths and misunderstanding.Inline filters can remove a variety of contaminants, from .4μ filters for bacteria and pyrogens (dead bacteria and miscellaneous critter bits) to a carbon block filter for chlorine and volatile organic chemicals (VOC’s) and larger contaminants. A 1μ absolute carbon block filter (offers five log or 99.999% efficiency) can not only remove chlorine and VOC’s, but can filter out giardia and cryptosporidium as well as a large amount of lead (most lead contaminating water is particulate and not in ionic form) and asbestos.If you want to remove dissolved minerals and metals from water, you have to look toward distillation or de-ionisation. Depending on the quality of the distiller, this can be very easy, or difficult in the case of the hack here. I remember customers bringing in models like the one above (Sears sold them for awhile), and there was precious little that could be done as they are mostly plastic. Regardless of the type of distiller used, you would need to treat the feed water or the distillate with a carbon block filter as the VOC’s and chlorine in the water will evaporate during the distillation process and condense with the distillate, leaving you with mineral and metal free water and still a lot of other nasty stuff sitting there.De-ionisation works well with feed water that’s under 75 μmhos conductivity. The issues with using mixed-bed DI to filter drinking water are exhausting the resin (which will then allow it to begin throwing contaminants back into the drinking water) as well as a potential amine taste from the anion resin in the bed. In most cities, the conductivity of the feed water is too high to use DI to treat drinking water unless it’s gone through a first stage purification like distillation or reverse osmosis. Cities like Portland, OR, Seattle, San Francisco and New York City have fairly pure water supplies (under 100 μmhos) and can use a mixed-bed DI system successfully with about a 1/4 cubic foot of resin to produce about 500 gallons of drinking water with a conductivity of approximately 2-5 μmhos annually. It’s a separate system with its own faucet to ensure use for only drinking and cooking.Labs will use triple distilled water mostly because a) it’s been around for a long time and is fairly simple (mixed bed resin technology is only about 40 years old) and b) distilling removes pyrogens by virtue of the process. Large scale ultra-pure filtration systems will use micro filtration as insurance as USP standards require micro filtration of the distillate. Using DI for ultra-pure water requires more in the way of UV sterilization (using high wavelength UV light to kill bacteria) and micro-filtration, but the big benefit is it can be done at feed water pressures while a distillation system requires a feed pump.Pure and ultra-pure water is very aggressive. Water is the universal solvent and it will act on whatever metal container it’s sitting in, and the higher the purity, the more it will do so. This is why most pure water systems use polyethylene or polypropylene tubing and storage containers (not PVC as previously mentioned).Regarding the negative health effects of drinking pure water: there are none. While the body will get some minerals from water, it’s again as I stated before, not a reliable source. You’re an animal, not a carrot. Minerals do add taste to water, which is why most drinking water companies like Alhambra or Dasani (Coca-Cola) add lime chips to the distillate to give it some taste. The advantage DI has over distilled water is that it still has a lot of dissolved oxygen in the water, which does more for taste than lime chips will. A good aerator does more for water taste than minerals will. The same with temperature.Pure water will not leech minerals from your bones or organs. Your body is constantly balancing electrolyte levels and eating a well-balanced diet and drinking lots of water (and as mentioned by someone else here, drinking pure water actually helps your kidneys, not hurt them) does a lot for your health, Eating a couple of bananas and a mango every day and drinking two liters of pure water would give you pretty much all the minerals and vitamins you need for good health.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416648",
"author": "lou eney",
"timestamp": "2011-07-12T17:19:37",
"content": "im with fartface on this one. I think this site needs more trolls like us to keep you hipster hackers under check. Good job fartface!Trolls unite!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,142.771902
|
||
https://hackaday.com/2011/07/11/computer-controlled-el-wire-light-show/
|
Computer-controlled EL Wire Light Show
|
Mike Nathan
|
[
"Misc Hacks"
] |
[
"el wire",
"sparkfun"
] |
[Paul] wrote in to share a project he recently helped assemble,
a huge rolling light sculpture
with a ton of computer-controlled EL wire circuits. The sculpture recently featured as a float at the Starlight Parade held in Portland, Oregon.
Working alongside the folks from Hand Eye Supply, [Paul] helped design and build all 114 of the float’s electronic circuits. Almost 1000 feet of EL wire was used to light the massive float, all of which was controlled by 15 Sparkfun sequencer boards. The boards ran custom firmware he created in order to communicate with the lighting software that was chosen to run the show.
In the end, the float came out quite nicely, but it was not without its problems during the construction phase. [Paul] ran into tons of issues when using Sparkfun’s EL wire sequencers, and has put together
a detailed list of corrections
he made to the boards in order to get them working properly.
If you are interested in learning more about the project, you can check out
this behind-the-scenes look
at the float’s construction.
| 6
| 6
|
[
{
"comment_id": "416277",
"author": "Paul",
"timestamp": "2011-07-11T21:17:02",
"content": "To give credit where credit is due, the float design was all the vision and hard work of Laurence Sarrazin, of Hand-Eye Supply (who sponsored this huge project)http://www.handeyesupply.com/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416346",
"author": "Mattster",
"timestamp": "2011-07-12T01:01:51",
"content": "” So there is it, a lengthy post about all the issues I’ve encountered with these Sparkfun El Sequencer boards. To be honest, I’d always assumed Sparkfun put considerable engineering work into their products. Maybe this one is an exception? ‘Brute force honesty is a good thing",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416501",
"author": "Alan Burlison",
"timestamp": "2011-07-12T09:26:46",
"content": "SparkFun stuff isn’t properly made? No surprise there. If you think the hardware is bad, you should take a look at the software:http://bleaklow.com/2010/08/28/sparkfun_are_less_than_electrifying.htmlI reported that nearly a year ago and they still haven’t fixed it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417114",
"author": "travis",
"timestamp": "2011-07-13T18:10:07",
"content": "Great work to Paul and Hand-Eye Supply. I’ve met Paul a few times, great guy to work with. I need to make it to another Dorkbot meeting soon!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417485",
"author": "Paul",
"timestamp": "2011-07-14T13:05:10",
"content": "Sparkfun contacted emailed me… they’re planning to fix the el sequencer issues.@travis – thanks. :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417516",
"author": "Alan Burlison",
"timestamp": "2011-07-14T14:55:43",
"content": "@Paul – yeah, sparkfun told me exactly the same thing about the firmware I complained about – still not fixed. Excuse me if I’m sceptical about them actually doing anything – their post-sales support is dire.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,142.089771
|
||
https://hackaday.com/2011/07/11/running-android-on-large-touch-screen-displays/
|
Running Android On Large Touch Screen Displays
|
Mike Nathan
|
[
"Android Hacks"
] |
[
"android",
"lcd",
"multi touch",
"touch screen"
] |
Forget Microsoft Surface, what do you think about having a 32-inch Android-powered touchscreen display in your living room? That possibility
might not be too far off
, thanks to the engineers over at SKR Technology in Japan.
Primarily a company that designs and builds digital signage, they were approached by several customers who wanted a large screen device that had multi-touch functionality similar to a smartphone. Since they frequently work with Windows, they tried building a solution around Windows 7, but it just didn’t function as smoothly as they would like. Instead they turned towards Android, but were disappointed to find out that none of their suppliers supported the OS.
Instead of scrapping the project, they build their own interface that allows an Android-powered device to interact with multi-touch displays. As you can see in the video embedded below the display works quite well, mirroring everything on the Android device’s screen.
While the product is not yet available commercially, we should see it come to market later this year. We hope to see an open source version sometime in the future as well, even if we can’t quite afford a 32” touch panel display.
[youtube=http://www.youtube.com/watch?v=TNzt1SdEDu8&w=470]
| 24
| 24
|
[
{
"comment_id": "416266",
"author": "Jack",
"timestamp": "2011-07-11T20:37:56",
"content": "http://www.novatech.co.uk/novatech/prods/monitors/touchscreenmonitors/novatech/nov-22tch.htmlI have one of these, and to be frank the touch screen functionality is pointless, however if it were part of a table or horizontal setup, it would work great.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416274",
"author": "Hackerspacer",
"timestamp": "2011-07-11T21:09:31",
"content": "This is neat. It needs higher resolution and a proper OS though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416278",
"author": "DrDoom",
"timestamp": "2011-07-11T21:18:37",
"content": "they need to lower the DPI a LOT for a normal interface :P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416280",
"author": "BobSmith",
"timestamp": "2011-07-11T21:27:24",
"content": "I think I need to see a purpose for this. This is rather like inventing the giraffe in a world without tall trees.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416282",
"author": "Hirudinea",
"timestamp": "2011-07-11T21:32:02",
"content": "Paul Bunyan’s cellphone? This could have interesting applications in HDTVs, just make the remote a lightgun/wiimote and you can use andriod apps on your TV (if you want to.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416287",
"author": "Fred",
"timestamp": "2011-07-11T21:34:41",
"content": "Anyone else notice what the guy doing the demo was looking at? Some website for sex dolls!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416289",
"author": "doronbc",
"timestamp": "2011-07-11T21:36:53",
"content": "BobSmith;remotely through an arbitrary touchscreen, like those in carswhen the evo got full hdmi out, someone asked if devs could remotely control the touchscreen through usb and hdmihttp://forum.xda-developers.com/showthread.php?t=999778",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416312",
"author": "bob",
"timestamp": "2011-07-11T22:47:18",
"content": "Rather than home usage,It has applications in control(production/plant control) & teaching",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416322",
"author": "Anton Onszers",
"timestamp": "2011-07-11T23:15:59",
"content": "Hey, I have the same thing running in my living room (embedded in the sofa table). Wouldn’t want to miss it. Now I can look up any strange word Stephen Fry is using without having to grab my laptop first… Priceless!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416323",
"author": "m1ndtr1p",
"timestamp": "2011-07-11T23:16:44",
"content": "Not at all what I expected, but really, it would be pretty simple to pull off a standalone unit… Get one of the many dev boards out there that uses a dual core SoC (Tegra 2, Exynos, or the plain A9), build a driver board for the (I assume) 1080P display which can connect to the dev board, and you’re in business… All that’s left to do is customize Android to scale apps to 1080P correctly (since devs most likely won’t modify their apps to support such a high resolution) and you’re all set.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416342",
"author": "Digital_Entropy",
"timestamp": "2011-07-12T00:23:51",
"content": "@BobSmithI can give you a purpose right now: Kiosks in every imaginable place. Airports, libraries, malls, I mean the possibilities with that are quite nice. Another use would be in education where you could have kids interact with a physics simulation or a multitude of other things. If you want to do something just make an app or find one. Just my 2 cents…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416344",
"author": "Lobster",
"timestamp": "2011-07-12T00:51:36",
"content": "@FredThey where referring to this. (I could not find the exact article they were looking at on the screen but this is the story)http://www.dailymail.co.uk/news/article-498530/Japans-latest-invention-The-dental-training-robot-feel-pain.htmlThis is a dental training robot. That has a skin that is made by a company that makes ‘love dolls’.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416359",
"author": "M4CGYV3R",
"timestamp": "2011-07-12T02:01:28",
"content": "Why not get an x86 port of Android working properly and put it on one of the all-in-one touchscreen PCs?http://www.android-x86.org/download",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416411",
"author": "HaxOR",
"timestamp": "2011-07-12T04:41:02",
"content": "I agree with m1ndtr1p.In fact, while we’re at it, why not redo google and facebook into one website.Just get a computer that runs mysql. Write up a quick social page / search engine back end,probably in c, so it runs fast.Then make the user front end. Done!Throw in a custom driver so you can interface to your bank of ATM machines, that way you can group people by net worth.So easy, I can’t believe this stuff is on hackaday.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416452",
"author": "Eirinn",
"timestamp": "2011-07-12T06:43:38",
"content": "@M4CGYV3R and the point of having adroid as an x86 platform would be….?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416454",
"author": "Eirinn",
"timestamp": "2011-07-12T06:47:44",
"content": "That’s an amazingly cute little robot. I like the 90 degree angled pcb – makes it look very homebrew :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416455",
"author": "Eirinn",
"timestamp": "2011-07-12T06:48:26",
"content": "odd, ignore the comment over this one – something odd happened and my reply got posted on the wrong project.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416462",
"author": "saimhe",
"timestamp": "2011-07-12T07:01:46",
"content": "@EirinnSame reason why some OSes are ported to variety of platforms: for their fans at least. That is, because of the attachment that isn’t as much utilitarian as emotional.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416486",
"author": "The Cageybee",
"timestamp": "2011-07-12T08:35:30",
"content": "@Fred Disappointingly, it’s not a sex doll, it’s a training aid for dentists. It was posted on Engadget a few days ago, which I noticed was the site he was looking at.Needless to say, it generated a lot of low brow comments re sex dolls. Hilarious IMHO.Article is here:http://www.engadget.com/2011/06/30/hanako-2-robot-acts-like-a-human-dental-patient-makes-us-say-a/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416488",
"author": "The Cageybee",
"timestamp": "2011-07-12T08:38:40",
"content": "Oops. He wasn’t looking at Engadget. Same robot though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416494",
"author": "isama",
"timestamp": "2011-07-12T09:05:00",
"content": "damn. that’s nice. If I had the budget I’d be on the phone right now. I want it, even without the case (or especialy without the case :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416642",
"author": "Kamanashi",
"timestamp": "2011-07-12T16:49:07",
"content": "I saw something like this at Best Buy the other day. It was pretty awesome and I would love to have one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417411",
"author": "KillerBug",
"timestamp": "2011-07-14T08:19:11",
"content": "Neat…put that screen in a cell phone with a few dozen cell processors and a couple of car batteries and I’ll be in heaven!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417573",
"author": "Dennis",
"timestamp": "2011-07-14T18:15:45",
"content": "By September my guess is a Google TV setup could do the same thing?",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,142.686661
|
||
https://hackaday.com/2011/07/11/crafting-a-hexapod-with-an-rc-controller/
|
Crafting A Hexapod With An RC Controller
|
Mike Szczys
|
[
"Robots Hacks"
] |
[
"hexapod",
"rc",
"RF",
"servo motor"
] |
Here’s a fantastic project that lets to
drive a hexapod around the room using an RC controller
. [YT2095] built the bot after replacing the servo motors on his robot arm during an upgrade. The three cheapies he had left over were just begging for a new project, and he says he got the first proof-of-concept module put together in about an hour. Of course what you see above has gone through much improvement since then.
The three motors are epoxied together, with the one in the middle mounted perpendicular to the motors on either side of it. Those two are responsible for the front and rear leg on each side, with the third motor actuating the two middle legs. It’s a design we’re already familiar with having seen the smaller Pololu version. You might want to
check that one out
as there’s some slow motion video that shows how this works.
[YT2095] added control circuitry that includes an RF receiver. This lets him drive the little bot around using a transmitter with four momentary push switches on it. We love the idea of using copper clad for the foot pads.
| 3
| 3
|
[
{
"comment_id": "416456",
"author": "Eirinn",
"timestamp": "2011-07-12T06:48:51",
"content": "That’s an amazingly cute little robot. I like the 90 degree angled pcb – makes it look very homebrew :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416473",
"author": "ftorama",
"timestamp": "2011-07-12T07:38:24",
"content": "It’s a classic alternate tripod but building is great, servos being chassis at the same time",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416484",
"author": "YT2095",
"timestamp": "2011-07-12T08:30:43",
"content": "Thanks ;)also, someone asked me on Twitter for the Code and diagrams etc…I have no diagrams, but the stuff I used was a SCON board from:http://www.sconcon.com/the designer of these boards is a real nice guy and plenty helpful!the RF side used a pair of 433MHz Rx/Tx pair (cheap chinese ones), and also the HT12E and HT12D chips digital Encoder and Decoder respectively.the outputs of the HT12D go through a simple hex inverter to the SCON boards input lines.the Code is really simple too, here:address 0beginIf input 1=1 goto forwardsIf input 2=1 goto test4If input 3=1 goto backwardsIf input 4=1 goto leftgoto beginforwardsMove 10000output 15 onMove 10001output 15 offgoto beginbackwardsmove 10300output 15 0nmove 10301output 15 offgoto beginrightMove 10100output 15 onMove 10101output 15 offgoto beginleftmove 10200output 15 onmove 10201output 15 offgoto begintest4if input 4=1 gosub wobblegoto rightwobblemove 10400output 15 onmove 10401output 15 offgoto beginAddress 10000Position\ts1=17000 s2=17500 s3=17000Position\ts1=13000 s2=12500 s3=13000address 10100Position\ts1=13000 s2=17500 s3=17000Position\ts1=17000 s2=12500 s3=13000address 10200Position\ts1=13000 s2=12500 s3=17000Position\ts1=17000 s2=17500 s3=13000address 10300Position\ts1=17000 s2=12500 s3=17000Position\ts1=13000 s2=17500 s3=13000address 10400Position\t s2=12500Position\ts2=17500the Nice part about the boards controller is that the Stack Pointer goes back to the line directly following the initial Jump command from a key press, allowing Multiple key`s to be pressed at once, so you can have turn right/left on the spot, OR Forwards turn, or backwards turn, and if you press all 4 keys down at once it`ll do a little dance :)",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,142.815435
|
||
https://hackaday.com/2011/07/11/building-a-stepper-driver/
|
Building A Stepper Driver
|
Mike Szczys
|
[
"cnc hacks"
] |
[
"3d printer",
"555",
"cd4013",
"cd4015",
"stepper motor",
"stepper motor controller"
] |
[TBJ] is building what he calls a junkbox 3D printer. You can probably guess that he’s trying to salvage most of the parts for the device, and after pulling a stepper motor from an old printer he was in need of a way to control it. What he came up with is
a stepper driver that uses discrete components
that are easy to acquire and inexpensive. The design calls for two inputs, one that toggles the direction in which the motor will spin, and the other that triggers one step of the motor. A CD4013 dual flip-flop takes care of both of these inputs in one chip package.
The motor is driven by a pair of H-bridges that he built using six transistors each. The trick with a stepper motor is that you need to drive the four poles of the motor to a specific logic level at a specific time. For this [TBJ] uses a CD4017 decade counter. A network of diodes grounds half of the output lines based on the flip-flop that controls direction. Our friend the 555 timer provides a clock for the circuit, keeping everything moving at a predefined rate. Check out the video after the break for an explanation and demonstration.
[youtube=http://www.youtube.com/watch?v=Y2fGj9A0MQI&w=470]
| 8
| 8
|
[
{
"comment_id": "416219",
"author": "Roman Dulgarov",
"timestamp": "2011-07-11T18:17:22",
"content": "Nice, for once something where Bi-Polar and Girlfriend are not in same sentence lol. Interesting design….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416247",
"author": "Adam Ziegler",
"timestamp": "2011-07-11T19:18:48",
"content": "I played around with a design a few years back. I used EMC2 to perform the indexing. His solution is much more elegant than what I attempted to do…http://media.adamziegler.net/cnc/electronics/uni_step_drive_6-5.png(Dont laugh too hard)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416248",
"author": "password",
"timestamp": "2011-07-11T19:31:16",
"content": "just in time , have have been procrastinating designing such a circuit for a while now.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416252",
"author": "Bogdan",
"timestamp": "2011-07-11T19:45:56",
"content": "I gave it a good laugh when i read about shorting some outputs to ground… the design is poorly made, i don’t understand why he didn’t go for one of the popular designs out there. There are some built around a 4028 and some other logic ICs. Please, don’t tell me they need to be salvaged, they are dirt cheap.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416265",
"author": "zacdee16",
"timestamp": "2011-07-11T20:34:10",
"content": "You could probably save some space in this design by eliminating the second set of 8 diodes coming from the 4017 outputs. All you would have to do is move their connections to the other side of the existing diodes. I’ve worked with the 4017 IC when I built a kequencer, and they are only needed to protect the chip. Nothing more, nothing less.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416267",
"author": "Bart",
"timestamp": "2011-07-11T20:42:21",
"content": "This could be done simpler with one 74HC86 (quad XOR) and 74HC74 (dual D flipflop). Use a 555 for the stepping pulses. Offcourse the 74HC74 outputs need to be buffered with an ULN style octal darlington.But still, different take on a common problem. Using a counter is nifty. I wonder if its 4 clocks per step or 8?@Roman Dulgarov: Hahaha ;-).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416663",
"author": "NateOcean",
"timestamp": "2011-07-12T18:08:37",
"content": "I’m sorry, but this is just a horrible design.Not only is it overly complicated, but it’s a real misuse and abuse of the logic elements.(I suspect that it doesn’t even do what the author thinks it does in the manner he thinks it does it.)There are many inputs with 1Mohm resistors to ground, that are totally unnecessary.If the pin should be grounded, then ground it.If the pin is driven by a logic output, then the 1Mohm is unnecessary.The one place that there SHOULD be a 1Mohm resistor is the Clock input of IC2b, but it is missing. When the Step switch is not pressed, it is a floating CMOS input. Bad news there.The Enable input on IC1 is floating, that’s another problem.What is the purpose of the diode from IC1 Output_9 that goes to IC2b_R input?The diode network is a kludge and shorting CMOS outputs to ground is a design violation. This is a really messy way to achieve the desired drive waveform.A timing diagram would have been helpful, as I suspect that the operation in the Clockwise direction is probably distinctly different than from the Counter Clockwise direction. Based on the way the outputs of IC2a work, it is probably unnecessary as well.There are many circuits for driving stepper motors published on the Internet. There is no reason to re-invent the wheel, but if the author was attempting to provide a new feature or novel implementation, I just don’t see it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417023",
"author": "TBJ",
"timestamp": "2011-07-13T13:19:02",
"content": "Hi everyone,Thanks for the comments – to be honest I wasn’t really expecting that this would make it to HAD, but it has, so…All good points made by Nate in particular – this circuit was simply a way of achieving something using only the parts I had around the house. I do realise, on reflection, that it has some design flaws and I will be taking all these things into consideration when reviewing the design.However, what I would say is that a) it does work, and hopefully may be useful at least as inspiration for someone else who wants to achieve this, and b) it is my first attempt ever at scratch-designing an electronic circuit.Again, thanks for the constructive criticism; it’s good to see this up here and hopefully whoever does want to build the circuit will take Nate’s very important points into account before making the decision.Anyway, I’d like to close by saying that it was conceived as a hack, and it is a hack, albeit an ugly one :)",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,142.962826
|
||
https://hackaday.com/2011/07/11/diy-clock-replica-is-better-than-the-real-thing/
|
DIY Clock Replica Is Better Than The Real Thing
|
Mike Nathan
|
[
"clock hacks",
"LED Hacks"
] |
[
"atmega",
"clock",
"led",
"thinkgeek"
] |
After seeing the TIX clock for the first time,
[Gweedo Steevens] really wanted one
, but wasn’t interested in paying the seemingly high asking price
over at ThinkGeek
. He figured it wouldn’t be too incredibly hard to build his own, so he decided to give it a shot.
The clock relies on 27 LEDs to display the time, which were multiplexed to make the most of his ATMega16 microcontroller’s available IO pins. Once he was happy with how things functioned on breadboard, he migrated the LEDs to a piece of perf board, and etched his own PCB for the controller circuit.
He used an office overhead lighting grate to separate the LEDs, providing nice uniform light segments. He put a piece of clear perspex on the front to cover the LEDs, but later switched it out for a much darker piece, for better daylight viewing.
The finished product is fantastic, and in our opinion looks even better than the retail version – awesome job!
[via
HackedGadgets
]
| 14
| 14
|
[
{
"comment_id": "416184",
"author": "steve",
"timestamp": "2011-07-11T17:11:00",
"content": "I think scotty wants his warp core back.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416189",
"author": "Kelly",
"timestamp": "2011-07-11T17:18:48",
"content": "Ts $40 really such a high price for a device someone took the time to design, build/have built, and market? I’m all for DIY, but whining that the original is “too expensive” seems pretty lame. God forbid the original designer/maker be paid anything resembling a living wage for their time.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416192",
"author": "steve",
"timestamp": "2011-07-11T17:25:41",
"content": "@kelly of course it’s too much to ask. if you can’t produce a product at a price people are willing to pay then you can’t produce a product, sorry to say. in any case this guy built his own to save money and it worked nicely.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416194",
"author": "Nick",
"timestamp": "2011-07-11T17:26:28",
"content": "@KellyIf you went to the actual page its says “When I first saw them I had to have one, but the price was a bit too high. And besides, it’s much cooler and more fun to say “I made that!”Which to me means, yes it is a bit pricey, and who wouldn’t love to say I made that!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416213",
"author": "Chris",
"timestamp": "2011-07-11T17:55:14",
"content": "I wouldn’t want to use this as an actual clock.But it does look cool, and is a nice set of blinkenlights.While it’s a matter of taste, I agree this looks far better than the original. The wood, and the featureless front panel (where the lights are not clearly delineated from each other) are classy.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416217",
"author": "Greycode",
"timestamp": "2011-07-11T18:06:47",
"content": "I don’t think $40 is too high of a price for the ThinkGeek clock, it is not too much to ask for what they are giving. And there is no problem if the guy saw the clock for $.01 and said, that is too damn high I can make it with what I have here. I think that the fact that he actually did it is the main point here, the details of why is just filler fluff.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416225",
"author": "Andr0id",
"timestamp": "2011-07-11T18:28:38",
"content": "Too much..? I agree that is not the argument. “Hey I made this!” is the way to go. After all, if it took more than an hour to make, you are over budget and losing money.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416232",
"author": "Aaron",
"timestamp": "2011-07-11T18:43:40",
"content": "Better style than the template, but it shares the problem of conveying less information than it pretends — blinkenlights only count when they’re saying something; having a bunch of random LEDs flickering for no reason just makes you look sad. An excellent reimplementation of a rather crap idea.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416240",
"author": "sanchezsucio",
"timestamp": "2011-07-11T19:01:34",
"content": "@Aaron, I don’t quite see your point. Yes they are blinkenlights, but they tell the time. I don’t think it is “conveying less information than it pretends” – it is a clock…that tells time…with LEDs. What else do you want it to do, cook you breakfast?I bought one of these from ThinkGeek, and I love it. It tells the time in a more novel fashion than a simple clock face, and people always ask about it.Why the hate? If everything was simple and utilitarian, nothing would be fun.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416279",
"author": "Hirudinea",
"timestamp": "2011-07-11T21:24:11",
"content": "I’m just amazed he got such a nice looking, working clock in at under $40!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416330",
"author": "Alex Parting",
"timestamp": "2011-07-11T23:40:14",
"content": "Kelly if that’s your attitude you’re in the wrong place…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416527",
"author": "poisonfist",
"timestamp": "2011-07-12T11:27:16",
"content": "the general attitude around here is for ‘make it of you can’t afford it’ but as my wife who is an economics professor would say, time is money. how much would you say you are worth for an hourly work? if you spend more than what you would like to be paid + the materials fee, it is generally at your loss. of course, nothing can replace the boasting rights of the diy spirit though, and hence, i am always losing money building shit.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416559",
"author": "Nutrino",
"timestamp": "2011-07-12T12:53:24",
"content": "@poisonfistSure, you’re time is worth money (income), but learning something is worth money too (expense). If someone can build a clock and gain knowledge, then wasn’t it worth their time? Projects for yourself are worth entertainment/education time more than they’re worth “how much would i have made at a job” time. I usually end up spending more after I’ve made something, and I’m usually worth more because of it. Or you could just go to thinkgeek. Same thing, right?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "495678",
"author": "Taz",
"timestamp": "2011-10-31T17:40:38",
"content": "No RTC = bad",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,143.060748
|
||
https://hackaday.com/2011/07/11/led-wand-for-light-painting-photography/
|
LED Wand For Light Painting Photography
|
Brian Benchoff
|
[
"LED Hacks"
] |
[
"HL1606",
"led",
"light painting",
"light wand",
"photography"
] |
[Michael Ross] is a photographer who has been getting into light painting recently. He’s come up with his own RGB light wand to create some
amazing images
, and also written a very, very
thorough tutorial
(PDF warning) on how to build your own light wand.
The light wand is based on an Arduino Mega board and uses an RGB LED strip based on the HL1606 controller chip. We’ve covered
these LED strips before
, and they’re very easy to use with the
requisite library
. So far, [Michael] has built a 48-LED light wand and a 16-LED wand with a 6-position program selector, making it easy to do awesome single-exposure photos
like this
.
[Michael] creates his images in an Excel spreadsheet – rows are which LED to address and columns are units of time. The picture data is then copied and pasted straight from the Excel worksheet to the Arduino source code. This in itself is a pretty clever use of Excel.
Check out the how [Michael] creates one of his light paintings
here
.
| 8
| 8
|
[
{
"comment_id": "416146",
"author": "TM101Radio",
"timestamp": "2011-07-11T15:37:05",
"content": "This is the coolest thing i ever seen.. When you said wand in the title i thought whoopy doo another led pen for picture taking.. BUT a programmable led light strip blows my mind..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416161",
"author": "CP",
"timestamp": "2011-07-11T16:09:01",
"content": "I remember someone did something similar with wireless signal strength. That was also very neat!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416178",
"author": "anomdebus",
"timestamp": "2011-07-11T16:53:08",
"content": "Wow, a POV duck hunt game would be awesome!.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416338",
"author": "ashtonsterling",
"timestamp": "2011-07-11T23:55:30",
"content": "I have seen this thing in person and it is amazing. Mike is a great guy and super creative. Y’all should check out his tutorial.Greg",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416569",
"author": "ashtonsterling",
"timestamp": "2011-07-12T13:24:30",
"content": "Oh, by the way, I just recently did a interview with Mike and a couple of other light painters. Check out our blog for more info.http://ashtonsterling.wordpress.com/2011/07/09/an-interview-with-light-painters/Greg",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "488123",
"author": "Per Jensen",
"timestamp": "2011-10-23T16:45:35",
"content": "I guess that this guy have not read the documentation for the Arduino Mega, and discovered the VIN-pin…. That DC-connector is just plain wrong there…..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "535472",
"author": "Sebastian",
"timestamp": "2011-12-14T15:21:30",
"content": "Really cool. Try light painting yourself using your WEBCAM. You could also use your iPhone as light source. Check out the software here:http://www.mylightpainting.comHAVE FUN AND BE CREATIVE!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "1074867",
"author": "brian",
"timestamp": "2013-10-13T18:41:45",
"content": "Does anybody know if there is a place to buy one of these already made?",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,143.010723
|
||
https://hackaday.com/2011/07/11/scavenging-ambient-electromagnetic-energy/
|
Scavenging Ambient Electromagnetic Energy
|
Mike Nathan
|
[
"News"
] |
[
"electromagnetic",
"energy",
"inkjet",
"radio waves",
"scavenging"
] |
At this very moment, unseen radio waves are bouncing off almost everything that surrounds you. Emitted by everything from radio and TV stations to cell phone networks and satellites, these waves are full of unharnessed energy.
That is, until now.
Researchers at the Georgia Tech School of Electrical and Computer Engineering have been working diligently to harness this unused energy, and recently unveiled their new antenna technology at the IEEE Antennas and Propagation Symposium.
The team, led by professor [Manos Tentzeris] has been working to develop ultra-wideband antennas to tap into the energy all around us. Using printers filled with a specially-formulated ink compound, they have been able to print these antennas on paper and polymer substrates. The antennas can harness energy stored in radio frequencies ranging from 100 MHz all the way up to 60 GHz, depending on the printing medium.
The team can currently power temperature sensors using television signals, and is preparing a demo in which they will power a microcontroller simply by holding it up in the air. The technology is still in its infancy, but the list of applications is almost endless. We doubt you’ll be powering your TV with this technology any time soon, but it definitely holds promise for things such as wireless sensor mesh networks and the like.
[Thanks, morganism]
| 66
| 50
|
[
{
"comment_id": "416089",
"author": "Pedro",
"timestamp": "2011-07-11T13:27:10",
"content": "These waves aren’t unused or unharnessed energy resources! By the law of conservation of energy, these guys are powering devices by attenuating your TV signal.The process is quite cool though. I was reading a paper about using photo-lithography to print antennas tuned to the resonant frequency of light to gather energy that way instead of using a photovoltaic cell.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416091",
"author": "effigy",
"timestamp": "2011-07-11T13:31:49",
"content": "This has been a hot topic in the US DoD SBIR program for a few years now, neat to see some of the technology coming out of that funding (and I’d be surprised if this research wasn’t partially DoD funded, despite the conspicuous absence of any DoD agencies in the list of sponsors).It’s not new, just new in the conference circuit, so the “until now” is a bit off…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416092",
"author": "effigy",
"timestamp": "2011-07-11T13:34:45",
"content": "also @ pedro,thats true only if they happen to be in the path between your tv and the transmitter, for a majority of this energy, it will never be received by the intended receiver so yeah, its wasted energy. Wifi routers transmit omnidirectionally, that doesn’t mean you use the energy that’s being beamed into your attic…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416093",
"author": "M4CGYV3R",
"timestamp": "2011-07-11T13:35:09",
"content": "The amount of the radio signal that will actually pass by this antenna is very small, so the attenuation of the signal is minimal. Take into consideration HOW MUCH of that signal goes to waste without devices like this.If you think of radio waves emitting as an expanding sphere, how much of that sphere does your device’s antenna take up? How much of that energy is actually anywhere near your device?If this can generate the ~1.75v needed to run a uController on super-low-voltage mode, it should be fun to see what comes next. Wireless T-Shirt LEDs anyone?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416095",
"author": "Nathan",
"timestamp": "2011-07-11T13:37:24",
"content": "Putting an object in between the signal and the receiver attenuates the signal anyways. The mass of your body for instance. So instead of just being absorbed by your body or the objects in your pockets, why not take that and turn it into something useable.Though I have my doubts that this can power a wireless mesh network. Mesh networks transmit at a pretty high power. I imagine it would need to absorb amounts of energy higher than what it transmits. Which would probably make it pretty useless unless it is directly next to a microwave that is always running. Maybe power lines?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416098",
"author": "liebesiech",
"timestamp": "2011-07-11T13:44:11",
"content": "My wife is using this for years! She tells me what I have to do (sending waves) and I do it (receiving waves).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416101",
"author": "Greg Whitmore",
"timestamp": "2011-07-11T13:49:21",
"content": "TI’s L092 can run on .9v It would be sweet to see a printable antenna powering one of my wireless sensors.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416103",
"author": "MattQ",
"timestamp": "2011-07-11T13:51:42",
"content": "Pretty cool stuff. Makes me wish I remembered more of my microwaves network class. While the amount of power you can receive is very tiny (thankfully, as high power radio waves have a tendency to do nasty things to the human body, as studies of people who live near radio towers have shown), this would be good for ultra mobile devices. Fun projects that could use this tech would be things like signal repeaters (transmit one signal based off of other signals in the area? Awesome), GPS tracking device (the perfect spy tool, a GPS tracker that never dies!), or maybe some kind of e-ink display (build up enough charge over time until you have enough power built up to change the image).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416109",
"author": "fartface",
"timestamp": "2011-07-11T14:06:17",
"content": "you dont need special ink to do this. a LOT of people have been doing it for decades with regular old wire and coils.Problem is the amount of electricity these collect is in the levels of femtowatts. incredibly small incredibly low. you need an array to collect more of it and a way to store it up so that your sensor can use a slug of it every 5 minutes and let the other 4.99876 minutes soak up enough energy to fire it again.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416116",
"author": "kabukicho2001",
"timestamp": "2011-07-11T14:29:00",
"content": "but to make that we need rectifier lower than Ge of 0.25 volts and free FDTD MOM matlab software not like expensives ones cts feko magus etc.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416123",
"author": "Bobby J",
"timestamp": "2011-07-11T14:38:42",
"content": "Oh god. The “free energy” weirdos and people selling magic stickers and copper shavings in resin will use this to “prove” their crackpot theories and sell…junk…excuse me, I have to go make some copper shavings and resin.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416126",
"author": "Oren Beck",
"timestamp": "2011-07-11T14:40:36",
"content": "This is a neat idea at first glance. ANCIENT in concept as I knew many folks with Crystal Radios harvesting enough energy to drive large speakers. Some apparently first installed in the late 60’s as diodes got both affordable and “Good Enough” to work in such applications.BUT! If we deploy too many such devices, we *WILL* begin sucking down signals that otherwise would allow useful communications.Being Blunt= this has potential to Bugger many comms paths up beyond comprehension.. As it can suck up Handset>Cloud signals too. Of course, if degrading paths is by intent? New Term of- RFDdOS?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416128",
"author": "Polov",
"timestamp": "2011-07-11T14:46:00",
"content": "@Pedro I thought the same thing when I read “unused”. Also cool about the visible light harvesting (radio waves are light too)I didn’t know people were doing that yet but as an amateur horticulturalist I wondered how long before someone would. Plants work by harvesting specific frequencies for different stages of photosynthesis.I highly recommend, to anyone interested, the book “Eating the sun: How Plants Power the Planet” Plants are green in order to use the different energy levels caught up in blue and red light.Leaves vs. Eyeballs (pdf warning):http://www.sunmastergrowlamps.com/Sunmaster_PAR_Watts-Brochure.pdf",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416132",
"author": "lejupp",
"timestamp": "2011-07-11T14:48:56",
"content": "In my city, there is a powerful AM radio station operating at around 700KHz. A couple hundred meters away, there used to be an area of allotment gardens. Since there was no (offical) supply of electricity to the gardens, the tenants would use antennas and resonators to draw power from the RF generated by the radio station to provide some lighting to their garden sheds. I have never den such an indtallation, but I guess hat you can draw quite a lot of power id the RF fiel is strong enough, given that you can make a fluorescent lamp light up with a cellphone…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416133",
"author": "xorpunk",
"timestamp": "2011-07-11T14:49:35",
"content": "Remembers doing this with shortwave bandwidth in school with ‘copper film’..Let me guess..specialized patented manufacturing specs owned by GT investor(s)? I’ll stick to the old cheaper/more-efficient ways..good luck getting richer off the ‘green market’ though..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416135",
"author": "rasty",
"timestamp": "2011-07-11T14:53:11",
"content": "Reminds me of the old cat’s whiskers radios from WW2. They didn’t need batteries but could barely power headphones.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416143",
"author": "tooth",
"timestamp": "2011-07-11T15:15:37",
"content": "the first thing i thought was Nikola Tesla Wireless energy transfer.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416144",
"author": "notsureonthis",
"timestamp": "2011-07-11T15:18:33",
"content": "we are completely missing the fact that he is printing circuits using ‘special’ ink right.. ..I can has?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416148",
"author": "Techraptor",
"timestamp": "2011-07-11T15:38:40",
"content": "Imagine an IC tunable to a frequency that gives the most power.Imagine an IC with square meters of nano layers as antennas.Imagine that IC connected to a small sMD LED. Voila….free energy. BTW this was originally Tesla’s Idea. Wonder why big semiconducter companies like ST or TI not look into this. Using VLSI tools for IC design like Virtuoso or mentor graphics tools you can create a chip that runs on RF. Wish someone can pay for such designing such an IC.. any takers …? cause I have bunch of guys who have the skills.Wish somebody pays for the fab.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416160",
"author": "Doktor Jeep",
"timestamp": "2011-07-11T16:04:15",
"content": "The picture at the right, in his left hand, is of an antenna I saw many years ago as an example of a wideband antenna.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416168",
"author": "ElectricMucus",
"timestamp": "2011-07-11T16:29:38",
"content": "@PedroYes, making antennas small enough to resonate at these frequencies is possible. I doubt this is possible with (light)lithography though since the structures in the antennas would obviously be smaller than the wavelength.It is be possible with (electron)lithography though.The main problem why “nantennas” aren’t feasible is that we cannot transmit these frequencies over any reasonable distance before it radiates off again and there is no known semiconductor which could operate at these frequencies to rectify them efficiently.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416170",
"author": "password",
"timestamp": "2011-07-11T16:34:14",
"content": "anyone rember those led stickers that you stick to your phone and it lights up when you get a call/msg?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416181",
"author": "Mantech1",
"timestamp": "2011-07-11T16:57:21",
"content": "Ah, this takes me back. I built a device like that using some wire, diodes and a capacitor. It worked but as some posters have commented this sort of system doesn’t get/recieve a whole lot of power.I wonder if anyones ever tried to use this sort of device in place of (or inside of) a RF shield, for those electronic circuits that generate alot of RF interference. Might be a good way to scavenge power for certain battery powered devices.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416190",
"author": "gcat122",
"timestamp": "2011-07-11T17:19:07",
"content": "@ notsureonthisTotally missing this shiny printed circuits…The article hints at silver nanoparticals. Google shows “silver nanoparticle ink preparation” is popular and might get to DIY status. Perhaps this can bring down the $100 per 5 ml pricetag? The good news is the 5ml vial is 20% silver by weight and could be thined to 1 to 5% for actual printing. The printer companies have already programmed us to pay $36 for ~10ml of ink in a cartridge so we are almost there. Note: I hate my Dell (Lexmark) 948 printer that constantly tells me I am out of ink, will not let me refill, and then shuts down a cartridge even when it is printing fine and disassembly shows there is still ink inside the cartridge. Welcome to Dell hell. Any solutions to this?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6420090",
"author": "Troya",
"timestamp": "2022-02-02T02:45:10",
"content": "Yes, after refilling cartrage, turn your wifi off every time you use the printer so it won’t connect to mothership to tell Dell that you refilled it.",
"parent_id": "416190",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "416208",
"author": "Chris",
"timestamp": "2011-07-11T17:44:59",
"content": "A couple of people said this will only attenuate signals if it’s in the direct path between transmitter and receiver, as if it were casting a a shadow.Well, that’s not exactly true.The voltage produced by an antenna like this will typically be milli- or micro-volts. Which is too low to be usable, or even to efficiently rectify.So to boost that voltage, you’d use a resonant circuit, just like in a crystal radio. For more effective energy scavenging, you might even use more than one, tuned to different frequencies.And that’s where the problem starts. Those circuits will be resonating out-of-phase with the original, received signal. Some of that energy will be coupled back to the antenna and re-transmitted. Every receiver with a tuned circuit is inadvertently also a transmitter.Now what happens when you phase-shift a received radio signal and re-transmit it? Destructive interference. Yep, every one of these devices is a little radio jammer, that attenuates radio signals for a greater area than you might expect; not just in the direct line-of-sight between transmitter and receiver.The more energy one of these is able to gather, the more interference it produces.This also means that you can’t connect ten of these together in close proxy to gather ten times the power. Even if they’re arranged so they don’t “shadow” each other from line-of-sight of the transmitter, each is still well within the others’ radius of interference. Each additional scavenger close to another produces diminishing results. And so does the performance of any receiver for which the RF signal was intended!RF energy scavenging is very old tech. It’s improved relatively little over time, and I question whether these researchers have advanced it at all. You could make the same antennas out of laser-cut foil or etched PCBs; and although manufacturing them this way instead of from conductive ink might cost a little more, the end product would perform the same.The real advances are in circuits that require less power to run, making them able to be powered by a scheme like this.However, I would not want a large number of these devices around my home! It’s already enough of a challenge to get adequate reception of my WiFi, FM, ZigBee, X10 RF, and Bluetooth signals everywhere I need them.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416218",
"author": "vonskippy",
"timestamp": "2011-07-11T18:15:33",
"content": "Maybe they can make the scavenging antennas fit in that deity awful tie of his and give him a reason (besides being a sheeple) to wear it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416221",
"author": "EllisGL",
"timestamp": "2011-07-11T18:19:15",
"content": "Here’s how I see it.. Integrate the antennas into roofing shingles. Not only would you get “some” power from it, it could also help reduce heat transferring into your attic.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416226",
"author": "xorpunk",
"timestamp": "2011-07-11T18:33:58",
"content": "@Techraptor: You obviously don’t understand the physics behind magnetism..not that it matters, we’re just commenters..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416230",
"author": "Loki",
"timestamp": "2011-07-11T18:42:29",
"content": "Anyone seen a PDF of the paper they presented? I’m pretty sure it is titled “A Battery-less, Wireless Mote for Scavenging Wireless Power at UHF (470-570 MHz) Frequencies”, but can’t find a copy…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416234",
"author": "MoJo",
"timestamp": "2011-07-11T18:52:56",
"content": "There have been legal rumblings about this sort of thing for years in the UK. Although every crystal radio does it the broadcasters have apparently threatened people living near enough to the transmitter to get some benefit from it against harvesting their signal.Of more concern disruption wise are things like model train sets and motor scooters which can kill my TV signal when they go past. Over the air TV in the UK is really patchy – I live in a major city and still get crap reception.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416270",
"author": "Drew",
"timestamp": "2011-07-11T20:49:28",
"content": "I understand the relevance of the article, and what these guys are doing is very cool, but HAD seems to be giving them a little too much credit. To say that ambient RF energy is unused “until now” is just wrong. There are lines of ICs developed specifically for this purpose, even.http://www.futureelectronics.com/en/manufacturers/powercast/Pages/index.aspx",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416319",
"author": "Sean",
"timestamp": "2011-07-11T22:58:43",
"content": "I once assembled a large coil and a low ESR capacitor resonant at 60Hz, with germanium diode rectification. I got max 100mv out of it if it was left near the lab soldering irons. I hoped to get enough out of it to flash an LED once a minute or so, but no luck.I’ve had success printing etch-resist directly to flexible copper-clad kapton to make antennas for other purposes. Perhaps a useful method for others wanting to make small, lightweight antennas like these.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416334",
"author": "DerAxeman",
"timestamp": "2011-07-11T23:44:26",
"content": "@ everyone that says energy is being wasted by transmitters. Energy is not being wasted by TV and radio transmitters when they broadcast. That energy is being used to transmit information to an area not a single point.Any device that draws on this signal to power itself will reduce the area covered by that signal. Granted a single device won’t have much of an effect, however if these devices became common place it would.If TV and radio stations wanted to, they could sue. There are already a couple of legal cases that would back them",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416356",
"author": "Darkeru",
"timestamp": "2011-07-12T01:44:10",
"content": "About time they started to develop this again. Tesla had something similar to this over 80 years ago!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416364",
"author": "Microguy",
"timestamp": "2011-07-12T02:18:11",
"content": "Just remember, there is NO free lunch.This is fine if just a couple people are doing it, but really, if you have lots of people doing this, they’re taking power from somewhere.Just think “loosely coupled transformer.”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416365",
"author": "echodelta",
"timestamp": "2011-07-12T02:23:36",
"content": "I have heard that they are developing a stealth coating for high rises. The shadow they can’t do anything about but the reflection is a nusince. So they would rather have it absorbed.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416368",
"author": "Nikita",
"timestamp": "2011-07-12T02:31:40",
"content": "…Hmmmm ….. TeslaCan this be considered stealing?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416381",
"author": "Dan Fruzzetti",
"timestamp": "2011-07-12T02:56:06",
"content": "Seriously if this gets big it will be annoying and self-limiting. Imagine your signal constantly flickering in and out because people walk past your house with an energy-sapping device. I already waste 100% reliable money on 90% reliable content provision services; where does it end?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416387",
"author": "Matt",
"timestamp": "2011-07-12T03:25:18",
"content": "So this is the ancient concept of coupling a wideband antenna to a rectifier to get “free” energy. The main novel concepts of this group appear to be (1) using printed antennas, and (2) fairly large bandwidth compared to previous systems.I am fairly dubious of the benefits of (1) since the economies of scale usually go towards large scale production of conventionally printed circuit boards with photolithography, which includes flexible circuits on substrates like polyimides. Printing is great for fast, precise, on-off prototyping but it’s not great for production since the nanoparticle ink is so expensive, not to mention it doesn’t have the same performance of the same materials plated on a board, and are they doing a post-plating process to ensure it won’t corrode after the paper is published? The article hints at them printing “carbon nanotubes” as well, but if that was a useful part of this work they would not just hint at it.Innovation (2) is good, as semiconductor technology marches forward the rectifiers can perform at higher and higher frequencies. It takes some effort to get a wideband match between the antenna and rectifier. Course I don’t know how much people are transmitting these days above 5GHz wifi, but there may be some power being transmitted between 5-15GHz that is worth harvesting.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416414",
"author": "jeditalian",
"timestamp": "2011-07-12T04:58:22",
"content": "I’ve been wanting to do this sort of thing since like 1986. maybe not 1986 because i was born in 1986 but like 1988.. except i was thinking i’d have to transmit my power on a specific frequency and receive it.. or just find the frequency that the universe is already oscillating at or whatever, thinking there is already a frequency that the sun transmits its energy on, besides visible light. or gravity or something. of course, i’ve got far more important shit to think about nowadays, like finding a job in this shitty whateveryoucallit.. and getting an HDtv so i can have a non-CRT computer monitor and actually pick up what little channels my shitty location has to offer.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416417",
"author": "ShuGGsy",
"timestamp": "2011-07-12T05:15:16",
"content": "@MattIn regards to (1), the ink is printed on paper for the specific reason of having an extremely cheap, flexible substrate. Earlier papers from the same group were in reference to RFID implementations which could use the cost reduction of the substrate to make cheap tracking tags for logistics. This is an extension of that research. Currently, the circuits are printed because they are exactly what they say — prototypes. It takes about a day to produce a usable prototype with this process, but this could be significantly reduced for mass quantities by screen printing the ink. Paper also has the advantage of already available processes for sealing the printed antenna. This is similar to a printed photo. There’s the question of how this coating would interact with the antenna, but this shouldn’t affect the antennas as currently made.The ink is currently a mix a silver nanoparticles as was previously stated. While it is expensive, there are a quite limited number of suppliers/buyers of the ink currently. Like many prototyping-friendly products, all it needs is a push in the cost-effective direction with a viable end-market.The carbon nanotubes is another possible extension of the research that hasn’t been explored as much.This technology is best suited for burst communications (as was previously mentioned in the comments) but can power a uController given the right conditions.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416419",
"author": "octel",
"timestamp": "2011-07-12T05:18:45",
"content": "@MattQWhat “nasty things” do radio waves do to the human body? I’d like to see these studies about people living near radio stations that you mention, because it all sounds like the same old woo-woo bullshit from people that don’t understand basic science (e.g. the WiFi scare in the UK)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416438",
"author": "tooth",
"timestamp": "2011-07-12T05:52:53",
"content": "@jeditalianif you do some research on Tesla you would find that he did a lot of work in this field. he actually lost a lot of funding and he could of been a vary rich man if he was not so obsessed with wireless power. he also worked with resonant energy. i think i remember some thing about him finding the frequency of a building and destroyed part of it. the Sun actually gives off a vast amount of radiation over a wide range offrequencies.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416441",
"author": "anyone",
"timestamp": "2011-07-12T06:00:40",
"content": "old tech with fancy new designs. put up some performance numbers and maybe ill read the whole article. until then, ill read elsewhere.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416594",
"author": "kabukicho2001",
"timestamp": "2011-07-12T14:56:36",
"content": "we are about 6.5 gigapeople in this planet and with 6.5giga antennas can kill all steve jobs iphone ipad etc.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416631",
"author": "xtremegamer",
"timestamp": "2011-07-12T16:15:25",
"content": "mhm, 17″ laptop screen and behind that an 17″ antenne how much would that generate ?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416795",
"author": "ShuGGsy",
"timestamp": "2011-07-12T23:41:49",
"content": "Also of note:The implementation in the article harvests MICRO-watts (up to a little over a milliwatt), not femtowatts as previously stated.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416842",
"author": "Hippynz",
"timestamp": "2011-07-13T02:33:34",
"content": "This could be used to constantly trickle charge cellphones to give greater usage times by constantly topping them up with charge. so you would not have to plug in to a charger so often. One day most of the battery charge could be done this way and only plug into charger once a month.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417011",
"author": "j s",
"timestamp": "2011-07-13T12:53:32",
"content": "Omron already has ultra low power sensors which are powered by vibration from the machinery to which they are attached. And they are networkable.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417069",
"author": "Doktor Jeep",
"timestamp": "2011-07-13T15:27:16",
"content": "Does anybody have any listings of the typical outputs of common devices, in Wattage or Db? Averages would work. Though a hacked Linksys can have its transmission power upped and I have seen some that needed a cooling fan added, so that would certainly be outside of averages.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,143.552871
|
||
https://hackaday.com/2011/07/11/waterfall-signal-visualizer-from-arduino-and-cellphone-lcd/
|
Waterfall Signal Visualizer From Arduino And Cellphone LCD
|
Mike Szczys
|
[
"Radio Hacks"
] |
[
"arduino",
"ham",
"lcd",
"signal visualizer",
"waterfall"
] |
[Leigh] is a HAM operator (you may know him as wa5znu). He is familiar with a signal visualization tool called a waterfall which plots signal strength and frequency over time. He wanted to build his own waterfall and ended up with this
Arduino-based version which he calls Cascata
. Cascata means waterfall in Italian which meshes nicely with Arduino’s country of origin
The display he chose is a Nokia LCD shield from SparkFun. It’s easy to plug in and there were already libraries available to drive the display. The audio input just connects to a headphone plug (you can just make it out at the bottom right in the image above) using some electrical tape. A free-formed resistor divider ensures that the signal is within a measurable range. [Leigh] found that signal noise was a bit of a problem but was able to improve his results by adding a capacitor to the Arduino headers between the VREF and GND pins.
See it in action after the break.
[youtube=http://www.youtube.com/watch?v=o4oW2X8QVhk&w=470]
| 12
| 11
|
[
{
"comment_id": "416084",
"author": "matt",
"timestamp": "2011-07-11T13:18:29",
"content": "Always wanted to teach myself FFT… This seems like a useful way to do so.Keep the ham hacks coming :)KC2ZYS",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416097",
"author": "M4CGYV3R",
"timestamp": "2011-07-11T13:40:12",
"content": "The “Waterfall” software just outputs the direct results of the FFT as pixels. I personally find numbers more useful.Also…he used a pre-made circuit board, with a pre-made shield, with pre-made software libraries…? Super challenging!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416112",
"author": "matt",
"timestamp": "2011-07-11T14:11:00",
"content": "@M4CGYV3R: waterfalls are useful too. I use them both for digital radio and pro audio. Numbers wouldn’t be very useful in the same use case as the waterfall.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416127",
"author": "Dave",
"timestamp": "2011-07-11T14:44:37",
"content": "The waterfall display is used in Ham Radio digital communication applications to display PSK-32 and RTTY signals, among others.I imagine this project could lead to a full radio receiver if a digital signal decoder was used.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416131",
"author": "chango",
"timestamp": "2011-07-11T14:48:24",
"content": "@M4CGYV3R: You know, it’s ok to use off-the-shelf hardware. I think we can give him a pass for not mining his own indium to make his LCD panel.This would be perfect sitting on top of an HF rig on field day.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416201",
"author": "wa5znu",
"timestamp": "2011-07-11T17:35:36",
"content": "@M4CGYV3R: You have a great point. I did this myself in a couple of hours initially, and then refined it over a few weekends.So it’s not super challenging, especially since I’ve shown it works and given some directions.But it’s not a close-ended project. You can reproduce this yourself by buying a few COTS parts and using your junk box, have something that works and is useful, and it just begs to be tinkered with.So what I’d really like is for others to take it in new directions; see the end of my write-up for suggestions.My secret goal is to bring the electronics/uC hacking community and the ham community closer, so I like to do projects that help hams get into microcontroller and real-world hacking, and maybe entice hackers who have experience with things like Arduino and GPS into more RF/radio areas.Leigh.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "2739555",
"author": "Gregory E Reule Km4HOY",
"timestamp": "2015-10-04T02:44:41",
"content": "Hello Leigh, I am working with a regular HF unit, a Kenwood TS 520S, and have been wondering if this waterfall display could be use with that unit. I believe that it is analog unit so, any ideas ? Thanks, Greg KM4HOY",
"parent_id": "416201",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "416316",
"author": "washer",
"timestamp": "2011-07-11T22:53:22",
"content": "Thanks for the great writeup Leigh!I’m a EE student and have been interested in RF for a while now, but haven’t made the jump for my ham license or gear yet. I’ve been eying GNU Radio and an USRP from Ettus Research for a while now but I still haven’t made the jump. Could you recommend some good starter gear, or would you go ahead and jump for the USRP?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416341",
"author": "Leigh",
"timestamp": "2011-07-12T00:06:52",
"content": "@washer it depends on what you want to do. If you’re happy with what you get out of SDR projects, that’s great. If you want a radio that will work without a computer, that’s good too because you can develop operating skills and gain the practical knowledge and and experience needed to keep up with what your equipment is doing and what it ought to do. In the US, and most of the rest of the world, there are at least two classes of license: one lets you get on VHF and above, and the higher class lets you use HF, which bounces off the ionosphere and goes around the world. So if you start with the first license you are limited to VHF and up, where SDR is much harder due to the higher clock rates and fussier layouts involved. HF is much easier to experiment with.You might consider a digital mode such as PSK31, which can do well with 5 Watts and works well with SDR equipment.Or you might decide to go into VHF/UHF/microwave work and use your SDR with some transverter front ends and try working on 10 GHz, though personally I’d consider that an advanced project.QRP is a fun way to get involved in HF (low power output <5 watts) but it's not so good for developing operating skills, as you need the skill to make contacts first. So save that for a little later.One good option is a digital mode such as PSK31, which you can do with not much power (5W is often enough) on HF, but you'll need the \"General\" or other equivalent license, which means more theory tests.One thing to beware of if you're outside the US: some license classes don't allow you to build or modify equipment, so you'll definitely need to advanced past the Australian or other \"foundation\" license.PSK31 is a good digital mode for HF experimentation and it works well with low power (5W or so) and so you can learn a lot with it, and equipment that isn't too expensive. SDR is good with it as well.VHF/UHF with handi-talki or mobile radio will give you some enjoyment but there's not much room for experimentation there, unless you get a radio that does something other than FM (for example, an FT-817) but then you may be searching for others to talk to and experiment with, because VHF is limited in distance, usually.So, HF is good for experimentation and learning, and VHF/UHF FM is good for local communications and meeting other local hams, and VHF/UHF/microwave experimentation is its own highly technical art, and hard to use with SDR or experimental equipment until you get your feet wet.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416375",
"author": "washer",
"timestamp": "2011-07-12T02:43:57",
"content": "@Leigh thanks for the feedback!I’m definitely looking to get my feet wet and I’ve been thinking more of HF. I’m not too worried about the tests, I am about to get an undergrad degree in electrical and computer engineering and think I should be able to pick up most everything from one of the AARL guides (I’ve taken some digital communications, wireless communications, and dsp classes. Also, I’m in the US, south east). Unfortunately the ham club at my school has been long defunct so I haven’t been able to find an Elmer.One of the things that has kept me from diving in with a USRP is the initial cost. Would a dedicated rig be comparable or cheaper? What would you suggest to start with if I went that route? I know some of the brand names, but not much more than that.I’ll definitely have to look more into PSK31.I have been putting this off for a while. I was thinking I’d get some gear after we finish senior design this fall, but I may make the jump sooner if I have some extra time.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416392",
"author": "Leigh",
"timestamp": "2011-07-12T03:36:37",
"content": "@washer why don’t you send me mail when you get a chance. You can useleigh@wa5znu.orgaddress.Leigh",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416839",
"author": "washer",
"timestamp": "2011-07-13T02:23:09",
"content": "Shot you an email Leigh. Thanks again.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,143.465923
|
||
https://hackaday.com/2011/07/10/how-to-build-your-own-pulsed-laser-pistol/
|
How To Build Your Own Pulsed Laser Pistol
|
Mike Nathan
|
[
"Laser Hacks",
"Weapons Hacks"
] |
[
"gun",
"laser",
"ssy-1",
"yag"
] |
Self-declared Mad Scientist and Instructables user [Trevor Nestor] recently built a pulse laser pistol and decided to share his build process, so that
you too can build a ray gun at home
. The gun is made up of mostly scavenged components, save for the Neodymium:YAG laser head, which he purchased on eBay for about $100. He does say however, that you can score an SSY-1 laser from an old rangefinder, providing you hang out near a stockpile of decommissioned Abrams tanks.
[Trevor] walks you through the process of recycling old disposable cameras to get enough components for a capacitor bank, as well as how the charging circuit should be constructed. He also discusses how the laser head needs to be wired, before showing off the finished laser pistol in a cheeky video, embedded below.
While the gun lacks the finish of
this laser pistol we showed you
, it’s no less potent when shooting through plastics, wood, and thin metals. It’s a great starting point if you are looking to build a laser of your own, leaving room for improvements, such as a faster charging circuit.
[youtube=http://www.youtube.com/watch?v=nBFuHr1uG-o&w=470]
| 50
| 50
|
[
{
"comment_id": "415859",
"author": "daniel",
"timestamp": "2011-07-10T23:50:59",
"content": "Ugh. Save yourself some time:http://www.youtube.com/watch?v=nBFuHr1uG-o#t=7m45s",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415860",
"author": "daniel",
"timestamp": "2011-07-10T23:52:05",
"content": "uh, wth. It turned my link into an embed!Just skip to 7m45s to see the laser go zappy",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415868",
"author": "adam outler",
"timestamp": "2011-07-11T00:11:08",
"content": "wow! thats all i can say.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415873",
"author": "Chris",
"timestamp": "2011-07-11T00:24:41",
"content": "Terrible video >_>",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415882",
"author": "Darkmatter",
"timestamp": "2011-07-11T01:03:00",
"content": "That was the most annoying video.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415886",
"author": "tooth",
"timestamp": "2011-07-11T01:09:54",
"content": "i would like to see a steady cam built in his next video. man that was a long charge. maybe he can do some thing with auto switching instead of doing it him self. he looked a bit nerves each time he had to.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415904",
"author": "Volectorus",
"timestamp": "2011-07-11T02:02:35",
"content": "I would be nervous too. ever been bit by one of those caps?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415905",
"author": "Gatsu",
"timestamp": "2011-07-11T02:08:44",
"content": "I see things like this as a step to dealing with the time when authorities start using pervasive aerial drone surveillance. Although a YAG laser is probably overkill, a high power laser diode would probably be enough.No need to damage the craft its self, just frying the optics is enough.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415908",
"author": "dave",
"timestamp": "2011-07-11T02:31:58",
"content": "Best part was the outtro music.. I haven’t heard them in so long.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415910",
"author": "adam felson",
"timestamp": "2011-07-11T02:37:55",
"content": "I’ll never know if it did anything but make toy phaser noises. I watched minute after minute of stupidity and finally couldn’t take it any more.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415914",
"author": "zuul",
"timestamp": "2011-07-11T02:48:27",
"content": "that video is about 8minutes 41 seconds too long",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415921",
"author": "torwag",
"timestamp": "2011-07-11T03:04:10",
"content": "You gave your own build/hack a worse intro!1. sit in front of a table not on the floor2. use a room with enough light3. use a camera with a decent quality4. if you pretend being a scientist behave like one, seriously, a lab coat and Bermuda shorts?!5. keep the camera steady and focused6. remove disturbing objects (the vacuum cleaner wtf?)7. say what you want to say but keep it short use clean and well spoken international English. Write it down first this helps!Post a new video again and we might be watching it up to the end.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415926",
"author": "jordan",
"timestamp": "2011-07-11T03:17:20",
"content": "that video was horrible but the gun was pretty cool.“it doesnt always fire but a simple soldering job would fix that. I’m just too lazy” is not something to say in a video. self deprecation is not a good practice.and i am the last person to whinge about safety but good lord, that is a pulsed laser he’s pointing around. goggles!Hopefully he’ll keep working on this project and take it from a silly toy to something awe-inspiring. A mazzilli ZVS flyback for charging those capacitors will make it go several orders of magnitude faster. And an enclosure so there aren’t deadly voltages and haphazard connections everywhere would make it look better.dropping the sounds would also help but that’s his personal preference and OK as long as there is a mute.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415930",
"author": "Doug",
"timestamp": "2011-07-11T03:20:42",
"content": "The instructions need some work, try to use more images, it feels thrown together.Also, you should consider using a better charging system, if the laser costed you ~100$, you can probably afford to spend 20$ on the materials you’d need to make a PCB with more power.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415937",
"author": "Alex",
"timestamp": "2011-07-11T03:43:26",
"content": "I lost interest after “and Instructables user”.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415944",
"author": "killerbug666",
"timestamp": "2011-07-11T04:16:44",
"content": "To poster: next time you do a video that is 8 minutes long, you should shoot at least 16 distinct things. Youtube users don’t have the patience to listen to you jabber on about how slow it charges; just skip to the shots.ALSO, SOME OF US USE HEADPHONES, SO DON’T PUT LOUD BEEPS IN YOUR F**KING VIDEO!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415970",
"author": "Trevor Nestor",
"timestamp": "2011-07-11T05:51:54",
"content": "All right all right I know I had a crappy camera and I was filming at grandpa’s quit your whining XD. I just wanted to get instructions on how to build it out for those who were interested since it has not yet been done, and someone requested a video showcasing it so I did. Anyways I added in an annotation to alert viewers that the firing is at 7:40. I will be posting a better video of it firing for those who are interested, just working on getting a better camera. Thanks",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415973",
"author": "Jacob",
"timestamp": "2011-07-11T06:13:04",
"content": "GOD TREVOR THESE PEOPLE MEAN FREAKEN Business you should of let me handle your video shooting and such would of been much better",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415996",
"author": "bothersaidpooh",
"timestamp": "2011-07-11T07:01:59",
"content": "Pulsed laser using solid crystals i.e. those 20W laser bars would also work.I hear that some of these can be momentarily pulsed to 50W IF kept cool enough i.e. below ambient.The voltage threshold changes as well but if you take this into account and wrap 5 of them minus most of the heatsink round a central YAG core and Q switch it then you would get a burst of light that would exceed several MW pulsed.ebay has these for not much money, its scary just how easy it is to buy them. Not that I am complaining, you can get 2W C*s*o diodes for under £50 now :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415998",
"author": "Anon",
"timestamp": "2011-07-11T07:05:10",
"content": "This isn’t to do with the project, but the formating of the videos always seems to chop about 1/5rd off the right hand side. I’m using firefox.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415999",
"author": "bothersaidpooh",
"timestamp": "2011-07-11T07:06:07",
"content": "Cool, pseudo ball lightning on your desk! Thats cool.Wonder if you could use this effect to scan a larger area and then ionise along the spiral path to make a REAL ball lightning using the PMK principle? If so then that would be really cool and probably end up classified but hey…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416000",
"author": "bothersaidpooh",
"timestamp": "2011-07-11T07:14:51",
"content": "Voila, one working DIY “Star Trek” Impulse drive schematic. Thanks H-a-D ! :-)mailto mandoline at cwgsy dot net and i will forward you the schematics when i finish them.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416011",
"author": "GuiltyPixel",
"timestamp": "2011-07-11T08:30:58",
"content": "Please don’t ever make your own videos again. For the love of God, just don’t.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416025",
"author": "Mister X",
"timestamp": "2011-07-11T09:19:05",
"content": "I second this comment: “the formating of the videos always seems to chop about 1/5th off the right hand side. I’m using firefox.”. It’s an ongoing issue to be sure, and annoying as hell.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416030",
"author": "millsy",
"timestamp": "2011-07-11T09:32:18",
"content": "I use Chrome and it chops off 1/5th on the right. I end up rightclicking to copy URL and opening a new tab.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416033",
"author": "Bacchus",
"timestamp": "2011-07-11T09:52:49",
"content": "I loved it!It was just like those zero-budget skateboard and rollerblade videos, except he didn’t crush his bollocks.Never mind. Perhaps next time.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416064",
"author": "tutnixzursache1",
"timestamp": "2011-07-11T12:06:06",
"content": "YAG laser – $100lab coat – $20fu**ing up hundreds of nerds with an 9min worst quality ever handy-cam-video – priceless",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416073",
"author": "John",
"timestamp": "2011-07-11T12:24:02",
"content": "I use Opera and it chops off 1/5th on the right.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416074",
"author": "fartface",
"timestamp": "2011-07-11T12:24:53",
"content": "Dear hackers. Learn how to use a camera! Good god PLEASE! Just because you own imovie does not mean you have a clue to what you are doing with a camera.I’ll call it a Ray gun is when it has the ability to emulate a 10 pump BB gun and actually be able to kill a mouse or small bird.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416105",
"author": "M4CGYV3R",
"timestamp": "2011-07-11T13:55:54",
"content": "Jesus…I know your girl/boyfriend wanted to help, but set the camera on an effing table ffs. Also, stop trying to be funny while wasting 6+ minutes of the viewer’s time. Explain, demonstrate, done.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416119",
"author": "beandata",
"timestamp": "2011-07-11T14:30:53",
"content": "…. bah! thats roughly 9 minutes of my life that I cant get back",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416158",
"author": "Flame500",
"timestamp": "2011-07-11T15:59:55",
"content": "According to SAM’s laser FAQs, it seems like the power supply constructed for this laser is way too big. Supposedly you can fire one of these at its full rated power with a 900V 36uF capacitor. The bank created for this “ray gun” is easily a few thousand uF at somewhere between 600-1000V. Not only is that needlessly dangerous but its also going to ruin your fragile flashlamp. Its also very unlikely that it is providing you with any extra output power.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416172",
"author": "donov4n",
"timestamp": "2011-07-11T16:42:45",
"content": "While watching I was hoping for somebody to step into the scene and punch him…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416173",
"author": "Chev",
"timestamp": "2011-07-11T16:46:33",
"content": "Why is he dressed like luke skywalker?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416177",
"author": "Drake",
"timestamp": "2011-07-11T16:51:53",
"content": "set the value z-level:999; unless its already up there and the overflow is hidden :/ then you have more work to do",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416291",
"author": "mjrippe",
"timestamp": "2011-07-11T21:46:23",
"content": "@fartface the trollSo do you shoot lots of mice and birds while “hacking”?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416366",
"author": "NatureTM",
"timestamp": "2011-07-12T02:27:45",
"content": "Leave the acting for the actors, save the f-ups for the blooper vid. I came for lasers burning through stuff. If you say it burns through metal, show me that, and link to that vid from this one.Cool project though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416537",
"author": "FaTe",
"timestamp": "2011-07-12T11:48:16",
"content": "@NatureTMWell said, I agree with almost every other comment about properly setting up your video prior but it’s done and dusted now. Fact is show us what you said it’d do!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416540",
"author": "TrailerScience",
"timestamp": "2011-07-12T12:01:14",
"content": "Forget all these negative comments – keep pumping out the projects, this was one of the most interesting (and funny) things I’ve seen in a long time. Thanks!! Oh and btw – the video of your dad’s song, very nice but difficult to make out the lyrics, remix and de-emphasize the guitar, it really isn’t the focus of the song afterall, the words are. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416558",
"author": "herboid",
"timestamp": "2011-07-12T12:41:27",
"content": "Call that a death ray? It doesn’t even slow them down.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416573",
"author": "JohnR",
"timestamp": "2011-07-12T13:27:07",
"content": "Way to encourage people to post stuff. (NOT!)For crying out loud, you beat the guy up on his video, yet he did something 99.999% of the population didn’t do – he posted his project.Could he have done better? Yes.Did he deserve to be beaten into submission? NO!Thank you for sharing your work!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416621",
"author": "x",
"timestamp": "2011-07-12T15:57:42",
"content": "what a waste of the space-time continuum.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416622",
"author": "Mark A",
"timestamp": "2011-07-12T15:58:31",
"content": "I think that by the time your gun is ready to fire, the bad guy may have got away. (Slowly)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416670",
"author": "Britney Spears",
"timestamp": "2011-07-12T18:25:17",
"content": "He’s not heavy, he’s my brother.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417108",
"author": "Daman",
"timestamp": "2011-07-13T17:54:25",
"content": "I must on the whole the average commentator is a 6th grade drop out living in their parents basement who hasn’t done anything like this, much less buit a radio (am, heatkit). When you children build BETTER then show your work until then, go back to your dreamcast game collection. ya whiny little brats.p.s. it’s called lab coat you idiot.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417604",
"author": "Derptron 6000",
"timestamp": "2011-07-14T19:23:45",
"content": "Hilarious, I loved it. Cat sh*t on the power cord! That’s mint. Refine the weapon & get a better camera, I’ll be waiting for this thing to blow sh*t up!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "420305",
"author": "CoreAn_Crack3rZ",
"timestamp": "2011-07-20T17:24:27",
"content": "wahahahhaha :D why not make a rifle??anyways, that was fun! :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "421395",
"author": "MopInc.",
"timestamp": "2011-07-22T19:10:39",
"content": "He knows *zero* about proper safety for a class IV pulsed IR laser. Someone should take a sledgehammer to the YAG and then poke his eye out with a ball point pen.This, along with the idiot with 1W of 445nm in his hand, are the most irresponsible things on Hack-A-Day.The problem with idiots isn’t that they hurt themselves – other people get hurt.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "466601",
"author": "Azel A",
"timestamp": "2011-09-28T17:36:28",
"content": "Agreed !too long video with too much WTF things in it (you putting on gloves : WTF !? cat poop ?)But nice project, as said before : 99,99% wouldn’t make it, even if some are still able to whine.Yet I hope you’ll keep on improving it, and maybe show us the beam actualy going through metal foil, as you tease us.PS : buy GOGGLES !!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "983649",
"author": "Kdos",
"timestamp": "2013-03-24T05:12:31",
"content": "We need to invent v.a.t.s.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,143.414222
|
||
https://hackaday.com/2011/07/10/sound-card-microcontrollerpc-communication/
|
Sound Card Microcontroller/PC Communication
|
Brian Benchoff
|
[
"Microcontrollers"
] |
[
"communication",
"microcontroller",
"serial port",
"usb"
] |
The usual way send data from a microcontroller is either over RS-232 with MAX232 serial ICs, crystals, and a relatively ancient computer, or by bit-banging the USB protocol and worrying about driver issues. Not content with these solutions, [Scott] came up with
sound card μC/PC communication
that doesn’t require any extra components.
[Scott] bought a cheap USB sound card dongle on eBay (although a built-in sound card will do) and wired up the tip and ring of the plug to the microcontroller. The data is sent from the microcontroller a lot like Morse code – a short gap between pulses is a zero, a long gap is a one. This is parsed by a Python script using PyAudio. Synchronization, timing, and calibration is automatic because of a 10-bit ‘packet header’
explained in this video
.
After he had a really great way of sending data from a microcontroller to a PC, [Scott] asked himself if it would be possible to have bidirectional communication. Using the same sound card setup, he managed to get bidirectional communication off an ATtiny44a. You can see his demo video of this
here
.
The cleverness of hack is overwhelming, and we’re kind of amazed that this technique isn’t in the standard repertoire of solder monkeys. After looking at this, we’re tempted to throw out the half-dozen USB/RS-232 adapters we have lying around. They never worked anyway. Check out [Scott]’s highly informative video of his build below.
[youtube=http://www.youtube.com/watch?v=I0UEooQH2bw&w=470]
| 40
| 39
|
[
{
"comment_id": "415790",
"author": "jay",
"timestamp": "2011-07-10T21:10:03",
"content": "i figured the usual way these days was for your arduino to send it’s data back over the ftdi usb link?more seriously, you could probably crack open one of your cheap usb/rs-232 adapters, strip out the level converter they attached to an ftdi chip and then just have an ftdi cable.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415791",
"author": "adam outler",
"timestamp": "2011-07-10T21:16:10",
"content": "Very cleaver!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415799",
"author": "Satiagraha",
"timestamp": "2011-07-10T21:31:38",
"content": "@Adam OutlerYou think so? Why don’t you axe him a question?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415810",
"author": "Max",
"timestamp": "2011-07-10T21:52:44",
"content": "That was very interesting, thanks for sharing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415812",
"author": "Sprite_tm",
"timestamp": "2011-07-10T21:57:29",
"content": "@Satiagraha: I like the cut of your jib!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415819",
"author": "Nate",
"timestamp": "2011-07-10T22:11:24",
"content": "Rather than take this apart and solder it, I would use a cheap jack so that it can be plugged into any sound card.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415820",
"author": "rusty",
"timestamp": "2011-07-10T22:11:50",
"content": "wanna get in on this duel!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415822",
"author": "Daniel Matthews",
"timestamp": "2011-07-10T22:19:19",
"content": "You should be able to combine this USB audio hack with the transistor and crystal hack, plus a simple receiver circuit to create a two way data over FM radio link.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415824",
"author": "James",
"timestamp": "2011-07-10T22:24:05",
"content": "This is far far from new, even sparkfun makes a board to help matters along:http://www.sparkfun.com/products/10331",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415826",
"author": "Phil",
"timestamp": "2011-07-10T22:35:28",
"content": "Why hack the sound card? Why not just use a cable with the proper plug on the end. Any old pair of headphones will do.It seems like in his effort to replace serial with something simpler, he’s come up with something much more complex. The only advantage is price.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415837",
"author": "lou eney",
"timestamp": "2011-07-10T22:59:25",
"content": "im a geologist. I do not understand the usefulness of this hack. You people need to understand that in life sometimes time is better wasted on other things, like geologists understand well. get a life. get a real useful hack. peace and long live the earth and mother nature.– heady brosevelt",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415849",
"author": "Mike",
"timestamp": "2011-07-10T23:11:55",
"content": "If you were to solder the connections behind the input/output capacitors, you’d be able to get proper DC-coupled digital signals in and out of the USB sound card.The capacitors are quite easy to identify.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415870",
"author": "adam outler",
"timestamp": "2011-07-11T00:20:46",
"content": "I bet for the other side, it involves a rectifier, a capacitor, and either a linux audio device for proper control, or prerecorded sounds which will be turned into much lower frequencies by the rectifier and capacitor….. just a guess",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415891",
"author": "Miroslav",
"timestamp": "2011-07-11T01:29:43",
"content": "Might be useful for specific application. Only problem is max. speed is limited to about 20 kbps (44 kHz sound card sampling rate). Overall a good idea.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415916",
"author": "D_",
"timestamp": "2011-07-11T02:55:56",
"content": "Price was a criteria he mentioned several times. probably important for a future doctor that may be some time from their first good payday. No doubt at at 6x the cost of this solution the sparkfun product would have been rejected as well. In that amateur radio operators have been using computer sound cards as 1200 baud RF modems for years, this should be plenty fast enough. When you are the only one quite a bit of data can be passed at 1200 over the course of a day. Yea a patch cord would be my first choice, but if the best your junk box has to offer is bell wire..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415942",
"author": "Scott",
"timestamp": "2011-07-11T04:05:52",
"content": "@jay – I’ve opened-up some of those rubber-coated USB/serial adapters. The chips are HIN211EIA (level converter) and PL-2303 (USB/serial controller). Purchasing each is a little pricey, but doable – if my microcontroller had rs232 capability!@nate & @phil – Yeah a simple headphone cable could interface a PC sound card, but I figured if I wire something wrong I’d rather blow up a $1 sound card than my motherboard’s integrated sound controller!@james – thanks for sharing! That’s news to me. It looks a little complicated in the link, and wow that’s $$$ for what it is, but still cool.@mike – The capacitors are only used for the output, a SMT series capacitor is used for the input. Although I’ve tried this, I don’t feel right requiring newbies to de-solder SMT components, but you’re certainly thinking in the right direction. Tight control over voltage allows a whole new level of control and speed to the data transfer process!@Miroslav – This transfers a few hundred bytes in the blink of an eye. Anything faster would obviously warrant USB or something fancier. This is intended for small chunks of data. I wonder though, would sampling right and left channels at 192,000 Hz with 256 levels of amplitude (8-bit) resolution allow for 98.3 million bits of data to be transferred per second?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415950",
"author": "Kevin",
"timestamp": "2011-07-11T04:30:57",
"content": "I just wish there was a company that made a TTL -> USB serial chip in one package, instead of TTL -> MAX232 -> FTDI. That would be much simpler, 1 chip, no level conversion, etc…Perhaps this chip already exists, if so, please enlighten!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415964",
"author": "password",
"timestamp": "2011-07-11T05:32:03",
"content": "a simple pabx circuit come to mind",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415967",
"author": "password",
"timestamp": "2011-07-11T05:43:31",
"content": "this would also be quite usefull if you connect th uC to a mp3 player that has a mic input, to store be able to store more data",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415971",
"author": "mr foo",
"timestamp": "2011-07-11T05:55:25",
"content": "“Press play on tape”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415987",
"author": "bothersaidpooh",
"timestamp": "2011-07-11T06:45:33",
"content": "hahaha. now *this* is cool.Someone hacking together a flash drive inside a tape for your PC which in combination with any old cheap tape recorder emulates a Commodore 16/Speccy tape drive in 3..2..1… Pwned.I love the sound of tapes spinning in the morning… :) :) Anyone for a nostalgia trip?Actually I looked into using my Creative Zen for ambulatory multichannel EEG monitoring via LM567 based sound input as it has dual mic inputs.Sadly it is no more, it is demised. I gave it away to a friend “just to see if he could fix it” but methinks it is a brick as the FW recovery fails and it won’t even charge any more :-(Cheap Bluetooth headsets also work well. I actually got as far as getting a reliable on/off switch via LM567 detected tone before finding that it was prone to RF interference.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416008",
"author": "Max",
"timestamp": "2011-07-11T08:15:34",
"content": "Now the really clever way to do this would be to use a cmedia cm108 based dongle (some others too), it has extra gpios on it which could be used to bit bang a serial interface. Plus you can still use the the rest of the sound dongle at the same time :)http://mgrela.rootnode.net/yaesu-usb-rif/(not my site)-Max",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416022",
"author": "Lupu",
"timestamp": "2011-07-11T09:12:32",
"content": "I watched the video with curiosity for why he used an external USB sound card and soldered the uC to the connectors directly instead of soldering a standard jack to the uC cables and used the integrated sound card. It would be transferable to any sound device.I’ve previously used a similar hack to talk with an N900. It uses the 4-conductor jack variant as both stereo output and mono input are in the same connector. Additionally, a specific resistance needs to be used on the mic conductor before the N900 detects the inserted “headphones” as a microphone equipped set.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1006786",
"author": "SonicBroom",
"timestamp": "2013-05-22T12:57:46",
"content": "Haha! good point. Maybe he didn’t want to risk blowing up his motherboard audio?",
"parent_id": "416022",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "416032",
"author": "jj",
"timestamp": "2011-07-11T09:43:50",
"content": "@KevinCheck the FTDI datasheets again.http://www.ftdichip.com/Support/Documents/DataSheets/ICs/DS_FT232R.pdf“Integrated level converter on UART and CBUS for interfacing to between +1.8V and +5V logic. True 5V/3.3V/2.8V/1.8V CMOS drive output and TTL input.”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416045",
"author": "Bojan",
"timestamp": "2011-07-11T11:13:35",
"content": "PIC18F13K50 is about one dollar with full speed USB2.0I don’t like when hi say “…but I’m just a dentist” while trying to teach others.Also, MAX232N is about 30 to 50 cents, not 5 dollars he say!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416055",
"author": "svofski",
"timestamp": "2011-07-11T11:51:58",
"content": "Finally we can ditch this digital serial crap and load firmware like our grandparents did.http://www.youtube.com/watch?v=8fYFsBRVC8Y",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416086",
"author": "Miroslav",
"timestamp": "2011-07-11T13:21:21",
"content": "@Scott: I was wrong/unclear. At 44 kHz sampling rate you could maybe transfer up to 44 kiloBytesPerSecond. If you can force your card to sample 192 000 times per second, and each sample is 1 byte, you may be able to reach about 192 kiloBytesPerSecond.All in all a useful hack that could work with broad range of computer architectures.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416193",
"author": "signal7",
"timestamp": "2011-07-11T17:26:19",
"content": "Doesn’t seem all that useful. If you really need serial and you don’t have a uart, bit-bang serial in software is *not* that hard. I did it as an after-thought when using an attiny24 in a project and it only took a couple of hours to figure out. Even better, you can steal my code fromhttp://www.aperature.orgfor free!Level shifting isn’t the big problem he says it is. You only need a level shifter when talking to a PC, and even then you only need one level shifter per RS-232 port and computer you own. Buying a level shifter for every project is the wrong way to go. I have only one FT-232RL breakout for all of my projects. The level shifter is part of the PC – not the project. Even so, there are some alternatives out there that are much cheaper than the FT-223RL, especially if you aren’t in need of USB.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416242",
"author": "cantido",
"timestamp": "2011-07-11T19:04:30",
"content": "Do you guys have a technical editor or anything?>>The usual way send data from>>a microcontroller is either over RS-232>>with MAX232 serial ICsIs it? really? What about i2c, can, spi etc?>>crystals,Since when did a max232 or any of its clones need a crystal?>>bit-banging the USB protocolWhy do you need to do that? USB to UART chips exist and are cheap… you can get the CP21xx chips on a board ready to go for a few dollars. Probably cheaper than the USB sound card he used..While this is neat and cool .. the copy hackaday comes up with to make out that things like this are somehow useful or a must have for “our” projects are bizarre to say the least.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416264",
"author": "Isotope",
"timestamp": "2011-07-11T20:30:31",
"content": "http://www.sparkfun.com/products/9717they also have a 5v version. Doesn’t get any simpler than this.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416276",
"author": "defyboy",
"timestamp": "2011-07-11T21:16:18",
"content": "My 3.3v lv-ttl cable of choice:http://www.dealextreme.com/p/data-cable-compatible-with-nokia-ca-42-446",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416474",
"author": "filisoft",
"timestamp": "2011-07-12T07:40:14",
"content": "Soooo this “new” thing goes back 30 years in time. Great! He should set up a BBS now. (I wonder how many people know what a BBS is these days…)If you still mess with the drivers, at least mess with the drivers from a usb->serial adaptor instead of the drivers from a usb sound card. Then you’ll have a more normal protocol that doesn’t need any software to be written.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416526",
"author": "Scott",
"timestamp": "2011-07-12T11:26:06",
"content": "@signal7 – What alternatives are cheaper than the FT-223RL? Alternatives are exactly what I’m seeking!@cantido – It was implied I was referring to “from a microcontroller to a computer”. Also, clock rate is critical to error rate when using a level converter to connect a MCU to a PC via serial port. I’ll look into CP21xx! Is it DIP and bread-boardable? USB sound card is $1.30 shipped.@Isotope – lol, I can’t justify buying a $17.95 cable (plus shipping?) to send a few numbers from a $1 microchip to my computer.@defyboy – that’s a cool product! Is it supported for Linux and windows XP, Vista, and 7? Oops, the page says “Drivers don’t seem to work on Windows 7”@filisoft – next cutting-edge step will be to design an “audio modem” to allow data to be communicated over a phone line to bring back the dialup BBS",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416606",
"author": "cantido",
"timestamp": "2011-07-12T15:37:40",
"content": "@Scott>>“from a microcontroller to a computer”.The common way of doing that is a UART.. thats what its made for.>Also, clock rate is critical to error rateBut your clock is close enough to time pulses coming out your USB sound card?>>when using a level converter to connect>>a MCU to a PC via serial port.Level converter doesnt make a difference. Baud rate does.. if your clock is pretty far off or unstable use a low baud rate so that it doesnt matter. Again.. your clock is good enough to time pulses, so my guess is its good enough to run a UART at 9600 baud.>I’ll look into CP21xx! Is it DIP>and bread boardable?Yes, its a 5 or 6 pin male header… as a bonus the pins are 5v tolerant so one board can be used with both 3.3v and 5v systems. Even if the USB->UART bridge is $4 .. how much time have you wasted coming up with this? less than $4 worth of time?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417014",
"author": "signal7",
"timestamp": "2011-07-13T12:55:03",
"content": "@scott:Note that I said, “if you don’t need usb”. Bearing that in mind:http://www.sparkfun.com/products/8780SFE charges a lot for this circuit (for what it is). You could buy the components from digikey and prototype it yourself for even less.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417059",
"author": "AnonymousCoward",
"timestamp": "2011-07-13T14:52:07",
"content": "BTW, this chip uses the CMedia CM108/119 chip made for VoIP telephones and stuff. It technically has I2C as well as 8 GPIO pins. You could probably just write a drive in libusb to make use of it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417812",
"author": "Kevin",
"timestamp": "2011-07-15T03:52:14",
"content": "@jj: Thanks for the tip! I think I looked at that chip before when looking at options for micro controller pc communication w/o serial ports, but didn’t like the packaging (I prefer breadboardability, though I suppose I could bend the pins and dead-bug it). Not terribly cheap either, especially if you want/need the breakout board from SparkFun.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418308",
"author": "hans",
"timestamp": "2011-07-16T09:49:53",
"content": "I don’t get the article. Why do they claim that (their) USB/RS232 adapter don’t work? Did they bought shitty quality? I mean hardware hackers use these adapters (either sold as this or modified mobile phone data cables) all the times and they usually don’t have problems. Are idiots at work here?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418327",
"author": "Scott",
"timestamp": "2011-07-16T11:18:02",
"content": "@hans – “Are idiots at work here?” Quite possible! While I agree “they usually don’t have problems”, the small lot of USB serial adapter dongles I purchased are quite a problem. They’re some no-brand Chinese things not supported on Linux or Windows 7 (my fault for buying them), and I was too discouraged to go back online and pay (and wait) for a replacement. Again, I just wanted a few numbers from my microchip to my PC, and this zero-component solution was a pretty solid way to make that happen with the parts I had on hand.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,143.330457
|
||
https://hackaday.com/2011/07/10/a-homemade-electric-chair-reveals-a-darker-side-of-hacking/
|
A Homemade Electric Chair Reveals A Darker Side Of Hacking
|
Nick Schulze
|
[
"News"
] |
[
"electric chair"
] |
Here is an example of what happens when someone is tempted to use their hacking skills for evil. Hopefully it goes without saying, but do NOT try
this one
at home.
When his wife asked for a divorce [Andrew Castle] obviously did not like the idea so got busy building himself a DIY electric chair, placing a metal chair in his garage he wired it up to a 240V 13 amp wall output with the intention of luring his wife to sit in the chair for “a chat”. Fortunately the story ends as well as any story involving something as foolish as a homemade electric chair can end. We are guessing that [Andrews] wife’s suspicions were initially aroused when she was invited to sit in the lone metal chair in the garage, whilst he stood behind her holding a rubber cudgel. After a brief struggle she managed to escape unharmed and [Andrew] is now facing 10 years in prison.
All questionable morals aside, from the brief description available it looks like there may have been a few holes in the logic (or lack of) behind the construction of the chair, for one circuit breakers come to mind.
| 77
| 50
|
[
{
"comment_id": "415752",
"author": "Giovanni",
"timestamp": "2011-07-10T20:07:11",
"content": "I believe it’s more of a twisted mind issue than true evil. If he just wanted to get rid of his wife, he would shoot, stab, poison her… anything that’s easier. Also, he clearly didn’t plan it to look like an accident – this kind of contraption isn’t something you’d find in any house.I think he’s just a poor stupid mad man who was so blinded by his own emotions that he didn’t think about the years in jail he would get.And considering the logic holes you mentioned, it just proves the guy is just a madman. I feel sorry for that wife, hope she’s safe and sound now.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415753",
"author": "YT2095",
"timestamp": "2011-07-10T20:09:46",
"content": "erm… yeah, and No Arduino involved either.THIS GUY SUCKS MAN! >:D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415754",
"author": "monster",
"timestamp": "2011-07-10T20:12:00",
"content": "some soothing blue LED’s would have assuaged her fears",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415756",
"author": "amdroid",
"timestamp": "2011-07-10T20:15:03",
"content": "Hacker? Pah! He didn’t properly test the equipment.Test, test and re-test!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415757",
"author": "Hackerspacer",
"timestamp": "2011-07-10T20:15:21",
"content": "Came to post a snarky comment about lack of arduino, saw that it had already been done.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415758",
"author": "Hackerspacer",
"timestamp": "2011-07-10T20:16:10",
"content": "“240V 13 amp”Yep, UK.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415759",
"author": "Jesse",
"timestamp": "2011-07-10T20:20:15",
"content": "I built one of these before, and I coaxed my unwitting sister to sit down in it. Of course when I plugged it in all it did was shake her around a bit, it was just a halloween prop ;).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415761",
"author": "TruBluGuY",
"timestamp": "2011-07-10T20:20:27",
"content": "It shouldn’t work, as I guess Andrews wife wouldn’t be walking barefoot or wearing metal shoes in the garage so she is already isolated from ground and 230V AC is not enough for arcing over. I’d suggest; using a flyback transformers output like one from a 29″ CRT TV or better still any barbiturates[sleeping pills, sedatives] in a peg of Jack Daniels or maybe…………..Heck! why am I worrying my head of trying to kill people!!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415762",
"author": "Echoes",
"timestamp": "2011-07-10T20:22:48",
"content": "Insane.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415763",
"author": "lol",
"timestamp": "2011-07-10T20:26:07",
"content": "Lololol. What an idiot. So Mr Charles, your wife went missing. Oh, by the way, what is the electric chair doing in the garage?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415764",
"author": "Devin",
"timestamp": "2011-07-10T20:28:43",
"content": "Circuit breakers would trip, but they take a little while to kick in (to prevent start up surges from tripping the circuit breaker). This is the reason you still need GFI plugs even though you have circuit breakers.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415766",
"author": "Renee",
"timestamp": "2011-07-10T20:33:34",
"content": "Don’t you think that goes beyond questionable morals and straight into “this guy is insane?”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415767",
"author": "Piku",
"timestamp": "2011-07-10T20:33:37",
"content": "Hack is worthless without ad-infested, poorly written instructibles page.Also it’s a “make”, not a hack.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415770",
"author": "svofski",
"timestamp": "2011-07-10T20:39:53",
"content": "See what happens when makers don’t learn Chinese.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415771",
"author": "NatureTM",
"timestamp": "2011-07-10T20:41:44",
"content": "missed steampunk opportunity",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415773",
"author": "Paul Potter",
"timestamp": "2011-07-10T20:43:11",
"content": "Yep, that most likely would have just blown the breakers.Nutters, eh?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415783",
"author": "vinito",
"timestamp": "2011-07-10T20:55:16",
"content": "The evidence is much less suspicious if you can just get her to help you mount your ham radio antenna to your chimney during a thunderstorm.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415784",
"author": "CampGareth",
"timestamp": "2011-07-10T20:55:21",
"content": "Is it bad that my first thought was “bah, what a fool, there are much easier ways of killing someone!” (Joking of course)Seriously though it’s a good thing that this guy hadn’t learnt a bit more about UK electricity systems or else it would not have been impossible for him to hurt someone (probably himself in fairness)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415785",
"author": "Dracc",
"timestamp": "2011-07-10T20:56:03",
"content": "This does not belong on Hack a Day. Fark, maybe, but not here. Who is at the helm HAD? Epic Fail.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415787",
"author": "PICLover",
"timestamp": "2011-07-10T21:04:21",
"content": "He could have used a pic in combination with a optocoupler to control the voltage. And a 555 to adjust the time(45 seconds 3 times).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415793",
"author": "Steamo",
"timestamp": "2011-07-10T21:17:16",
"content": "But how about THERMO-RECTILE CRYPTOANALYSIS with hot iron???",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415794",
"author": "pff",
"timestamp": "2011-07-10T21:18:07",
"content": "I don’t know where you guys buy your circuit breakers at, i doubt that the breaker would kick in in time to save anyone.Generally a socket circuit is wired on a 32A breaker, plenty of electic to kill before anything trips. I don’t know anywhere you can get a plug fuse over 13A, but its easy enough to put in two neutral pins or clip a nail or screw into the fuse.Breakers are generally designed to stop shorts in house wiring before the cable overheats and the house burns down, not to cut out the supply with a nice resistive load like a person in the circuit.Nice try to whoever said GFI, but there would have to be a short to ground for that to kick in. I’m not saying there wasn’t, but if the chair was on a sheet of plastic or something, ready to wrap the body in, there wouldn’t be a ground fault and the GFI (or residual current device as uk people know them as) would happily go on electrocuting as many people as he could get away with.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415798",
"author": "Decieve",
"timestamp": "2011-07-10T21:30:38",
"content": "Now if it wasn’t that insane, I would actually find it funny.. I have no opinion about whether it would work or not, but non the less, quite impressive build!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415806",
"author": "Andy King",
"timestamp": "2011-07-10T21:47:47",
"content": "Coming from a uk Electrician where this happened most house circuit breakers are 32A now if that had been used with a good contact at the head and another good contact lower down the body theres a chance that it might have worked however normal electric chairs use many many more amps and volts than this thing could also the other things that would screw this up would be…..1. R.C.D. circuit protection would trip out in well under 20ms if they had been installed in his distribution board these work at 30mA and are tested to trip under 20ms @ 30mA when they are installed to pass muster (30mA is sweet FA)2. not using the head as a point of contact, this would make it pretty darn diffictult to kill someone, it would be more akin to torture as most people who are killed by electric shock die from the fall after being shocked unless elderly or very young3. insufficient voltage and/or current which could be limited to 13A by the fuse in the plug unlike other worldwide electrics the uk has a fuse integral to the plug.4. and final Point where this guy failed in the first place is getting some one to sit in the damn thing in the first place, FAIL",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415813",
"author": "hubie",
"timestamp": "2011-07-10T22:00:36",
"content": "@pff GFI’s don’t need to leak current to ground in order to trip, they still retain their full functionality when operating on a circuit without a ground.Conceptually, GFIs operate by sensing the amount of current going out and compare it to the current coming in. If this amount differs, ie current has been ‘lost’ somewhere, the GFI will trip. GFIs will often trip in the neighborhood of 5mA with pretty fast reaction times.Back to the [bizarre] topic at hand, I would be relatively surprised if the human body didn’t have enough inductance to cause a GFI to trip, even if said body was wrapped in plastic.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415818",
"author": "zacdee16",
"timestamp": "2011-07-10T22:10:44",
"content": "A much easier way to kill your wife would be to withhold her next series of vaccinations and then bring a infected person into your house. All he would have to do is wait for swine flu to re-emerge.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415821",
"author": "Matt",
"timestamp": "2011-07-10T22:12:16",
"content": "I think this guy wanted to scare the bejeezus out of his wife rather than kill her. A guillotine would have been equally effective in the former and ineffective in the latter.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415825",
"author": "Frogz",
"timestamp": "2011-07-10T22:28:21",
"content": "overbuilteasier solution, 2 metal balls connected to a isolation transformer(or better yet, uk/us stepdown transformer ran in reverseover 400 volts out at a few amps of current“here, hold onto these balls”then not only would she be unable to release them due to muscle contractions, it would be deliver the current through her chest(as only 5 ma can stop somone’s heart)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415828",
"author": "pff",
"timestamp": "2011-07-10T22:43:18",
"content": "@hubie i don’t understand what you are trying to say. Perhaps you have misunderstood my post, I use the term “ground fault” to refer to the “leak” as you put it. I understand perfectly well how these devices work, a “leak” causing the device to trip has to go somewhere, and that somewhere is to ground one way or another, be it through a human body or through a CPC, which i believe you may be confusing with what i termed “ground” in my post.The second part of your post therefore confuses me, it seems to take a different argument to my original post, slightly at odds with your assessment of my understanding of circuit protective devices.I suppose that the success of the device would be very circumstantial, the differences in skin resistance would play a role in the current delivered, affecting both the shock and the response of the MCB. An interesting point also in the inductance of the body tripping an RCD. its not outside the realms of possibility that a garage socket could be supplied by an RCD with a wider tolerance to spikes because of machinery or equipment in the garage, although i am certain there will be objections to the theory, garage sockets of course are more likely to be used for outside appliances, necessitating quick responses to stop someone running a lawnmower or a hedge trimmer through a cable and meeting a sticky end.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415836",
"author": "stephen",
"timestamp": "2011-07-10T22:57:11",
"content": "Yep, plain stupid, no pic, arduino, write-up, blue leds, etc.My wife is onto me about HAM antennas and T-storms.This idiot deserves to be put away.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415838",
"author": "The DON",
"timestamp": "2011-07-10T23:01:09",
"content": "Could we have some build details please.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415842",
"author": "Nicolai",
"timestamp": "2011-07-10T23:08:18",
"content": "Europe uses 230v now. It was standardized a long time ago. So not 240 :)I guess that 13Amps is common in the UK, although most of Europe normally use 10Amp breakers (And usually 16Amps for 3 Phrased wiring).Just a thought…And man.. This shows that he hadn’t got a clue about what he was doing. Next time… Better planning, and as another said… Testing :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415845",
"author": "Nicolai",
"timestamp": "2011-07-10T23:09:51",
"content": "Not breakers… I mean fuses, of course..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415848",
"author": "Hirudinea",
"timestamp": "2011-07-10T23:11:27",
"content": "But of course he only started after he caught his wife knitting a noose!@Frogz: said “here, hold onto these balls”She wouldn’t do that, which they were getting divorced!All in all I prefer the bubble blowing machine.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415850",
"author": "Mattster",
"timestamp": "2011-07-10T23:20:03",
"content": "Sure glad I didn’t release my Arduino powered lethal injection machine",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415856",
"author": "Steve-O-Rama",
"timestamp": "2011-07-10T23:40:26",
"content": "Bah, I bet I’ll see something more lethal and cunning that this at the Detroit Make Faire.No doubt it will be Arduino-powered.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415857",
"author": "Steve-O-Rama",
"timestamp": "2011-07-10T23:41:14",
"content": "/THAN this. Stupid fingers….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415858",
"author": "André Esteves",
"timestamp": "2011-07-10T23:47:04",
"content": "There are some people wich have been more sucessfull on the DIY killing business, altough they had the good taste of keeping it to themselves:http://nosheep.net/story/man-commits-suicide-with-homemade-guillotine/I bet you could rig a arduino to the guillotine to randomly trip it while playing funerary music making it more exciting, but really whats the point? The man has already conquered some degree of imortallity with the deed…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415863",
"author": "dext0rb",
"timestamp": "2011-07-10T23:55:04",
"content": "the comments for this article are hilarious. bravo!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415871",
"author": "MrX",
"timestamp": "2011-07-11T00:21:22",
"content": "Really? Again? Are we really discussing GFIs again? I find it impressive how people that entitle themselves as hackers, don’t even know how home electrical circuits work!@Devin Like someone said, GFIs can only detect current-leakage to ground, not phase-neutral. In this case, the house would need to be equipped with a fast acting (under 20ms I think) breaker to prevent zapping the heart.@Andy King totally right!@hubie The most WTF comment came from you:“GFI’s don’t need to leak current to ground in order to trip, they still retain their full functionality when operating on a circuit without a ground.Conceptually, GFIs operate by sensing the amount of current going out and compare it to the current coming in. If this amount differs, ie current has been ‘lost’ somewhere, the GFI will trip.”So if the current doesn’t leak to ground, then where does it leak? Does it magically disappear?Summary: the guy would have probably caused some nasty burns in her feet if using normal/non-fast acting load breakers. A differential breaker (that’s how we call it over here) wouldn’t work at all..Of course the burn size and severity also depends on the feet contact area and pressure…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415878",
"author": "tooth",
"timestamp": "2011-07-11T00:56:06",
"content": "hold on to these balls lmao. the first electric Charis were made of wood.i am vary glad no one got harmed or killed.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415884",
"author": "ENKI-][",
"timestamp": "2011-07-11T01:09:00",
"content": "If you think that electrocuting your ex-wife is a good idea, I wouldn’t be surprised if you also have delusions about how circuit breakers work.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415892",
"author": "Ben",
"timestamp": "2011-07-11T01:35:57",
"content": "thought the story part was a joke…then it wasn’t. the comments are pretty funny though. what a serious but deadly discussion about electronics.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415895",
"author": "Paulie",
"timestamp": "2011-07-11T01:44:08",
"content": "What is this the amateur hour ?Geez, anyone from new jersey knowsyou just make it look like a carjackingand blame it on the homies from Camdenor Irvington.bada boom, bada bing ! problem solved!she sleeps with the fishes ! hehehe",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415928",
"author": "therian",
"timestamp": "2011-07-11T03:18:05",
"content": "I use low tech, a hammer to the lobe",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415931",
"author": "Anon",
"timestamp": "2011-07-11T03:27:11",
"content": "Dude fucked up",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415933",
"author": "Hackerspacer",
"timestamp": "2011-07-11T03:29:29",
"content": "The photo isn’t even a picture of the device!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415946",
"author": "killerbug666",
"timestamp": "2011-07-11T04:20:24",
"content": "I hate it when hackers don’t post…he should have put up a guide on Instructables!Oh, and he should have tested the chair…on himself.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415954",
"author": "password",
"timestamp": "2011-07-11T05:00:56",
"content": "welcome to the dark side , are you disappointed that we have no cookies ?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415990",
"author": "Psycho",
"timestamp": "2011-07-11T06:55:38",
"content": "I invented a new covert execution method the other day. Its called the “Batphone”.Mobile phone with integrated high voltage electrodes, that delivers a fatal shock via the earpiece and back panel (providing a through chest path) then shuts down again.HV circuit is integrated into the battery which has an internal one shot release clip so the battery falls out and gets lost before the victim is found.Looks like a heart attack, and if it wasn’t for the slight ear and hand burn it would be damn near undetectable.I should work for the CIA or something :-)",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,143.67858
|
||
https://hackaday.com/2011/07/10/bubble-blowing-bot-blows-big-bouncy-bubbles/
|
Bubble Blowing Bot Blows Big Bouncy Bubbles
|
Nick Schulze
|
[
"Arduino Hacks"
] |
[
"arduino",
"Bubbles Bot"
] |
[Rob] Was cleaning out his car hole when he stumbled across a servo, a PC cooling fan, an Arduino and apparently a whole lot of bubble mixture. With all of this, some scrap timber and a few trips to the dollar store, he was able to whip up this
bubble blowing bot
to entertain his children. It looks like a fairly simple mechanism, the servo tips the old pipe bend into the sudds and the fan provides the air to blow the bubble. The size of the bubble is varied by altering the speed that the pipe bend tips.
The video after the break shows the robot blowing some nice big bubbles, and a quick view of the fan and servo mechanism. There is not a lot of information available but we find the motion of the pipe bend and the big bubbles it blows entertaining, you know the saying, “simple things…”
[youtube=http://www.youtube.com/watch?v=j8S6-ferjuY&w=470]
| 7
| 6
|
[
{
"comment_id": "415719",
"author": "patman2700",
"timestamp": "2011-07-10T19:00:47",
"content": "There’s certainly something to be said for the ease-of-use inherent with microcontrollers.Now I wonder how this could be done using a few 555 timers…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415731",
"author": "MrX",
"timestamp": "2011-07-10T19:24:55",
"content": "Aha, I love the idea!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415739",
"author": "th",
"timestamp": "2011-07-10T19:38:52",
"content": "add an old blow dryer and you’ll have floating bubble",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415801",
"author": "Nomad",
"timestamp": "2011-07-10T21:37:48",
"content": "Combine this with a smoke generating machine and you’ll have smoky bubbles.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415899",
"author": "tooth",
"timestamp": "2011-07-11T01:50:14",
"content": "it would be cool if he made it look like an elephant. my 2 yr old would love it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416071",
"author": "Draget",
"timestamp": "2011-07-11T12:18:12",
"content": "Has anyone seenhttp://www.youtube.com/watch?v=j8S6-ferjuY&feature=player_embedded? I stumbled over it as it was a ref for this video. Cute =D",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "416320",
"author": "rob",
"timestamp": "2011-07-11T23:08:07",
"content": "I put a little more info on the YouTube version. After I built it I admit that I thought that I should have done it with 555’s. The micro is kind of cheating.",
"parent_id": "416071",
"depth": 2,
"replies": []
}
]
}
] | 1,760,377,143.594707
|
||
https://hackaday.com/2011/07/10/improved-fpga-synth/
|
Improved FPGA Synth
|
Brian Benchoff
|
[
"hardware",
"Musical Hacks"
] |
[
"fpga",
"midi",
"music"
] |
A week or so ago we featured an FPGA MIDI interface. Since then the builder has gone crazy with his FPGA and revised his code to
include polyphony and PWM output
, and posted a
polyphony demo
.
In our
previous coverage
of the build, the synth was monophonic, and the MIDI implementation was pretty shaky. After realizing the hard work was done, [Mich] re-wrote the MIDI interpretation module to keep 8 voices in memory. Now the synth can play 16th note arpeggios at 999bpm.
The original build used 8 pins to output the audio with an
R/2R ladder
for a digital to analog converter. This didn’t work well with a polyphonic synth (everything was clipped or noisy), so [Mich] moved to PWM output.
[Mich] plans on building a PCB for the PWM mixer circuit and adding the ability to receive velocity data from the sequencer. He’s also thinking about adding a sampler to the build, but isn’t quite sure about the best way to implement that. If you have an idea for [Mich], leave it for him in the comments. Check out the video below for a demo of the FPGA synth playing
Popcorn
.
[youtube=http://www.youtube.com/watch?v=9F9AvosC6R8&w=470]
| 9
| 7
|
[
{
"comment_id": "415655",
"author": "woutervddn",
"timestamp": "2011-07-10T16:06:10",
"content": "things like this.. just give me an eargasm..",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "969023",
"author": "emsynthuser2009",
"timestamp": "2013-03-02T23:04:42",
"content": "I am looking forward to see more information since I do deal with FPGA progging too and like to step into sound synthesis. This seems quite effectiv: Here is a guy pretending to have 4096 voices for a 48kHz samping frequency ready for MIDI use.http://www.96khz.org/cyclone3platform.htmlThe platform seems fine for music making, since it has 2 audio channels with the option board. Also those 16 switches interest me. They might be used for 16 tap sequencing with direct data input.Can you state how many voices you can achive with your platform altogether?Did you do some sound quality measuring or estimation to get THD(N) values?",
"parent_id": "415655",
"depth": 2,
"replies": []
},
{
"comment_id": "1293568",
"author": "Rolf Sassinger",
"timestamp": "2014-03-23T12:53:01",
"content": "wow, this project seems to have progressed pretty far! From the youtube video it seems to have a full graphical user Interface integrated which I consider being essential for handling an FPGA Music Synthesizer. I will put this Project to my history of FPGA music Synthesizers. Hope to see and hear more from that.",
"parent_id": "415655",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "415674",
"author": "roboman2444",
"timestamp": "2011-07-10T17:19:57",
"content": "lol at the knex speaker stand.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415691",
"author": "loans",
"timestamp": "2011-07-10T17:40:28",
"content": "haha those speaker stands are pretty sweet.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415768",
"author": "Rob",
"timestamp": "2011-07-10T20:33:56",
"content": "Adding an envelope for amplification wouldn’t be that much harder. Cool so far though",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415844",
"author": "DrDoom",
"timestamp": "2011-07-10T23:09:14",
"content": "This thing needs a noise channel for drums on midi channel 10",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416463",
"author": "Eirinn",
"timestamp": "2011-07-12T07:05:26",
"content": "Mmm…..it has a nice mellow sound, with a bit of noise cancelation it would be perfect.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416936",
"author": "Chris McClelland",
"timestamp": "2011-07-13T08:21:29",
"content": "When you add sampler functionality, you could use FPGALink (http://bit.ly/pLimCW) to quickly upload samples and patch info over USB rather than waiting for them to load over MIDI. You can also use it to program the FPGA.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,143.725243
|
||
https://hackaday.com/2011/07/12/fpga-generated-spdif-output/
|
FPGA Generated SPDIF Output
|
Mike Szczys
|
[
"digital audio hacks"
] |
[
"74hc04",
"fpga",
"spdif",
"toslink"
] |
[Mike Field] just finished implementing
SPDIF generation on an FPGA
. SPDIF is an industry standard for transmitting digital audio signals; the acronym stands for Sony/Philips Digital Interconnect Format. It’s been around for more than a decade and since it’s found on most home-audio equipment, building an SPDIF output into your projects may be quite a desirable feature. [Mike] mentions several ideas for this functionality like building high-end test equipment, or providing a high-quality output for electronic instruments.
He first jumped into analyzing the specification in order to determine the hardware requirements. Due to some issues with jitter, he found it necessary to use a 100 MHz clock signal. This pushes the jitter down to +/- 5ns of jitter, which he concedes may raise the hackles of audio purists, but does satisfy the published standard. Output requires just one pin of the FPGA and the five components seen above. A hex inverter (74HC04) voltage divider, capacitor, and RCA connector transmit the 0.5V signal to your audio-receiver of choice. Of course, since TOSLINK fiber optic connectors use the same protocol, you could redesign the output and make this an optical connection.
| 13
| 13
|
[
{
"comment_id": "416669",
"author": "Dax",
"timestamp": "2011-07-12T18:23:18",
"content": "Why is jitter a problem with digital transmission? Can’t it simply be eliminated at the recieving end by buffering the signal?Or is this another hi-fi voodoo argument like putting the CD player on a slab of rock and lifting the speaker cables off the floor with wooden pegs?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416676",
"author": "mike",
"timestamp": "2011-07-12T18:47:12",
"content": "SPDIF uses the data clock (on the optical/rca line) to clock the digital samples out thru the DACif your playing 48khz audio, it gets that 48khz by deviding down the raw data bit clock, and any jitter in the clock then causes the freq output to waver aswell",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416682",
"author": "chango",
"timestamp": "2011-07-12T18:53:46",
"content": "@Dax: Yes SP/DIF can be reclocked with a higher precision clock before going to a DAC. If a DSP is involved in the signal processing chain, this is already implicit.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416698",
"author": "CDKR",
"timestamp": "2011-07-12T20:08:59",
"content": "Would be cool to possibly also expand it to generate AES3 as well.AES3 is the professional digital audio standard that SPDIF as based on and is very closely related tech wise. SPIDF has some copy protection b/s bolted on.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416717",
"author": "Michael",
"timestamp": "2011-07-12T20:55:15",
"content": "As hard as I’ve looked I’ve never seen someone build something like an SDI interface for television. It would be pretty cool to build an SDI test generator. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416719",
"author": "macona",
"timestamp": "2011-07-12T21:00:39",
"content": "Meh, true audio purists would never be using digital. Thats a nutty crowd.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416721",
"author": "Mike",
"timestamp": "2011-07-12T21:07:19",
"content": "@DAX The jitter is an issue as the shortest pulse is only about 170ns – so the spec requiring less then 20ns jitter seems reasonable. In a perfect world my project has 10ns jitter, leaving 10ns for jitter from outside my control.Also crystals are not perfect time sources – they have maybe 30ppm accuracy. This adds lots of complexities when dealing with realtime sources, including DSP – if you are being given samples at 44,101hz and are sending them out 44,099hz due to differences in crystals two samples to you throw away? If you just buffer them over an hour your output will have 7,200 samples buffered and your output will be 163ms behind. Likewise, if you sending at 44101Hz and receiving at 44099Hz where do you get the two missing samples from?One simple solution is to follow the input clock by storing samples in a FIFO and speeding up or slowing down transmission as the FIFO fills or empties. But this introduces a small amount of FM in the resulting signal.The other solution is to interpolate the input signal, but then you are lose accuracy and high frequency response.And if you try to mix two or more real-time digital audio sources you can have a whole lot of fun!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416737",
"author": "Sleahey",
"timestamp": "2011-07-12T21:35:40",
"content": "+/-5ns, thats 0.024% clock error at 48khz… Smashing. Could use for test instruments easily.In my experience consumer gear sees about a 10x increase on that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416831",
"author": "Dax",
"timestamp": "2011-07-13T01:47:44",
"content": "The third solution is phase locked loops which average the jitter of the source to get an average operating frequency. Then you add a buffer to deal with temporary swings.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416932",
"author": "Pixel",
"timestamp": "2011-07-13T08:08:54",
"content": "I’d rather have an input to build a DIY 5/7.1 decoder on the cheap.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416958",
"author": "psuedonymous",
"timestamp": "2011-07-13T09:32:16",
"content": "You’d be hard pressed nowadays to find a piece of equipment with an S/PDIF input that DOESN’T have a phase-locked-loop to deal with minor clock drift. It’s pretty much a non-issue, but has been taken up by the same sector that tries to sell you $1000 power cables, as it allows them to take their existing marketing material and do a find-and-replace of ‘noise’ with ‘jitter’.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416986",
"author": "Coda",
"timestamp": "2011-07-13T11:35:12",
"content": ">It’s been around for more than a decadeTrue, in fact more than 2 decades. The first piece of SPDIF equipment I had was an interface to connect the Atari Falcon’s DSP to the SPDIF of an audio recorder. That was about 1992 I believe.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417017",
"author": "Howie",
"timestamp": "2011-07-13T13:02:49",
"content": "TOSLINK has been around since 1983 according to the ever-reliable Wikipedia. Since Sony and Phillips (the S and P in S/PDIF) are the developers of the CD audio format, which was released in 1982, it seems like it’s nearer 3 decades…",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,143.77634
|
||
https://hackaday.com/2011/07/12/fablab-helps-the-developing-world-set-up-long-distance-wireless-ethernet/
|
FabLab Helps The Developing World Set Up Long-distance Wireless Ethernet
|
Mike Szczys
|
[
"Wireless Hacks"
] |
[
"antenna",
"ethernet",
"mesh",
"parabolic",
"reflector",
"wrt54g"
] |
The wooden frame seen above hosts a parabolic reflector making up one side of a wireless network link. This is a Fab Lab project called FabFi which uses common networking hardware to
setup long-distance wireless Ethernet connections
. It’s a bit hard to tell in the image above, but the reflector focuses radio waves on the antennae of a router we’re quite familiar with, the Linksys WRT54G. It’s held upside-down in an enclosure meant to protect it from the elements. The node above manages to complete a connection spanning 2.41 miles!
One of the core values of the project is to develop hardware that is easy to build with limited resources, then to make that knowledge freely available. Anyone who has the ability to download and print out the 2D design file can build a reflector for themselves.
As we’ve seen in other projects
, paper stencils and hand tools can handle this job with no need for a laser-cutter (which was used for the prototype). WRT54G routers are inexpensive and the project uses the open source firmware OpenWRT. They can be run from 12VDC power which means a car battery works when mains power is not an option. The system has been running in Afghanistan for two years and hardware failure is still in the low single-digits.
[Thanks das_coach]
| 29
| 29
|
[
{
"comment_id": "416646",
"author": "Robot",
"timestamp": "2011-07-12T17:12:01",
"content": "I’m getting totally discouraged listening to story after story of large institutions faling individual. . . so storys like this make my day. Thanks!– Robot",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416647",
"author": "Doktor Jeep",
"timestamp": "2011-07-12T17:18:00",
"content": "Simple questions: I read somewhere that basic WiFi over long distances degrades quite a lot.This is the longest I ever heard of, and using off the shelf components too. Quite impressive.What’s the max range?Can those old large satellite dishes be used? What of the small dishes?Also, can this be used with Mesh concepts? I would imagine that a system running pfSense with 2 wireless routers, one interface a WAN (uplink) and the other treated like a DMZ (down), each to IP Filter the other out so it does not “talk to itself” though the two wireless routers and a single system could comprise mesh network with off the shelf parts, and combined with this antenna technology, may be a good answer to these “internet kill switches” and centrally controlled social networks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416653",
"author": "lou eney",
"timestamp": "2011-07-12T17:43:13",
"content": "damn I’m trying hard to troll this, but this is tough. Good read for sure. It makes me happy to see good open ended projects come to life and not get polluted with political and monitary factors along the way. This seems really useful for people who live in buildingss where verizon corporation/ATT/cablevision/comcast refuse to run highspeed lines. My father’s retail property is one of these places. Verizon refuses to wire internet cables from across the street since it would cost them upwards of $100,000 to relocate a stream or something… Perfect solution here.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416654",
"author": "Ryan",
"timestamp": "2011-07-12T17:55:52",
"content": "It doesn’t look like they are doing the wifi shootout at defcon anymore, damn. Back in 2005 a team set the record with a 125 mile 802.11b connection:http://boingboing.net/2005/07/31/defcon-wifi-shootout.htmlNice to see that this one will be easily replicated though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416656",
"author": "Simonious",
"timestamp": "2011-07-12T17:58:56",
"content": "We’ve been able to do stuff like this and meshing for quite some time. Once in a while I hear about long distance WiFi being used, but I don’t ever hear about mesh being used. It seems like a great idea, but I suspect people aren’t using it, because those who have internet connections don’t want to degrade them with additional users and those that don’t have internet connections who try to mesh find that there are no other mesh nodes to connect to.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416657",
"author": "asheets",
"timestamp": "2011-07-12T17:59:19",
"content": "@Doktor Jeep — While sat dishes would definitely improve the range and throughput (assuming you properly tuned them), I would suppose that in Afghanistan that chicken wire is much more plentiful.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416659",
"author": "wifigod",
"timestamp": "2011-07-12T18:01:30",
"content": "@Doktor JeepSignal can definitely degrade over distance, but it’s fairly predictable if there is direct LoS (Line of Sight).This is actually not even 1/100th of the record achieved with off the shelf hardware…which I believe is 382km (238 miles). I’ve consistently gotten 20+ mile links with a simple Parabolic dish and/or Yagi antenna.Ubiquiti Bullets can be used to get 20+km links with relative ease.It isn’t my expertise, so take the following with a grain of salt. Meshing is definitely less about distance and more about discovery and routing. I think distance would be much more reliant on output power + antenna design + LoS.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416664",
"author": "asheets",
"timestamp": "2011-07-12T18:10:37",
"content": "@wifigod – -agreed… There is plenty of optimization that can be achieved in this design, even with local materials. My first change would be to hang a cantenna at the chicken wire’s focus point. The 2nd change I would make would be to elevate the entire assembly up about 1000 feet to increase the line of sight.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416692",
"author": "pr",
"timestamp": "2011-07-12T19:35:57",
"content": "There are so many low cost commercial options out there now. Doing that much manual labor for such a slow link just isn`t worth it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416699",
"author": "supertreeX43",
"timestamp": "2011-07-12T20:10:01",
"content": "1 word: mehmy home town has this totally covered!http://air-stream.org/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416703",
"author": "nemonimity",
"timestamp": "2011-07-12T20:24:22",
"content": "Great story, I’ve tinkered with this stuff just across my town with a friend using a router a directTV dish and a pringles can. (we were able to connect… that’s about it.)In these days of ever tightening security and impending privacy rape-age I’m surprised more people aren’t investing time and thought into a home grown wireless network that can’t be brought down just because some suits feel it should be. Maybe the real wireless revolution will start in the third world?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416712",
"author": "Hirudinea",
"timestamp": "2011-07-12T20:40:09",
"content": "Hey for the third world this is about ideal.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416713",
"author": "Hitek146",
"timestamp": "2011-07-12T20:40:25",
"content": "1) As stated above, much longer ranges are easily doable. I had a reliable 20 mile 30Mbps link set up using two 3′ parabolic dishes for a while…2) Most WRT54G’s will run on anything between 5 and 35 Volts if you swap out the input filter capacitor…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416724",
"author": "Jim",
"timestamp": "2011-07-12T21:10:36",
"content": "Amateur (Ham) Radio people are already doing this, AND with MESH, AND with WRT54G’s. Hopefully soon ported to other hardware, now that one gent has figured out the ‘trick’.I personally have shot a 6 mile link (100% Link Quality) across South Austin TX between 2 parking garages, with 24dBi BBQ dishes. Lotsa geeky 2.4Ghz noise in Austin with all the personal access points, microwave ovens, 2.4Ghz cordless phones, etc.The problem with bigger dishes is along with the higher gain, you have a smaller beamwidth. Think of looking through a telescope–the more powerful the scope, the more precision you have to aim and keep aimed.Just a little bit off and you lose the link. We had some problems that day because of the 25MPH+ wind knocking the BBQ dishes around. They are only about 2′ x 3′ with big gaps. A 6/8/10′ AL mesh TVRO dish would have to be very securely anchored to keep a steady link.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416804",
"author": "userjjb",
"timestamp": "2011-07-13T00:28:08",
"content": "To all those saying “LOLOLOL I CAN DO THIS WITH $300 AND SPECIALIZED TOOLS”, please note that this is being done in Afghanistan where you can’t exactly Ebay your way out of the problem.The notable point here isn’t the distance achieved but the ease of construction. That said, of course there are improvements that can be made.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416823",
"author": "D_",
"timestamp": "2011-07-13T01:33:05",
"content": "Highly directional antennas most likely are incompatible with a wireless mesh network. For the network to be about to route problems all stations will have to hear at least one other station. directional antennas would be use for long distance interconnects between networks, or allowing an end user connect to a node in a network. From what I’m reading that’s what the features antennas are being used for. While the goal is to provide internet access, there is no mention of free internet access. Looks as fabfi is being tested in the USA.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416837",
"author": "J",
"timestamp": "2011-07-13T02:17:55",
"content": "Cool setup. Would this kind of setup be legal in the US without an FCC license? (If not, why?)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416855",
"author": "Daniel Spisak",
"timestamp": "2011-07-13T02:52:56",
"content": "What did all of this cost? You can buy a pair of Ubiquity NanoBridge M5’s for $160 USD and they will link two spots over miles easily. Comes with all the hardware you need, minus a set of antenna towers to mount on for the really long-distance stuff. And its a commercial product with real support.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416884",
"author": "error404",
"timestamp": "2011-07-13T04:29:43",
"content": "I’d build a simpler tower and make a simple Yagi out of whatever conductor and insulator was widely available locally. Use whatever radio you have or can get easily, as long as it has a detachable antenna. You can still use (small) paper templates for most of the cutting etc. I don’t think this would require anything more difficult to acquire or build than their design, but is smaller, more flexible, uses less material and should require less build effort. Seems to me that cutting wire to the right length is easier than cutting odd curved shapes out of wood.Seems to me that ‘single digit’ failure rate is pretty awful, though their sample size is probably too small to mean anything.Anyway, forget all that. These guys are out there in Afghanistan actually getting shit done and making things work. Mad props.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416890",
"author": "therian",
"timestamp": "2011-07-13T04:52:54",
"content": "I played with long range wifi using recycled crap in HS long time before WEP was cracked and dint think of it as achievement",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416899",
"author": "das_coach",
"timestamp": "2011-07-13T05:42:14",
"content": "That’s what ethical hacking is all about and why i send the link in here=)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416908",
"author": "Jobo",
"timestamp": "2011-07-13T06:24:15",
"content": "I have set up a 27km wireless link using wrt54 hardware with an off the shelf 25dbi grid antenna running freifunk. the schlep of trying to make an antenna while ubquiti makes a 22dbi dish with integrated router selling at 87USD in South Africa negates the small saving when compared to the wrt54.The ubiquiti also includes MIMO and at 7km I get 140mbps full duplex.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416953",
"author": "R",
"timestamp": "2011-07-13T09:13:34",
"content": "ubiquity and mikrotik, you can create long distance nodes for like 100$ or less.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416999",
"author": "t&p",
"timestamp": "2011-07-13T12:17:22",
"content": "I feel like I may have gone to the future to see this in the past. Or maybe that was slashdoted last year or something.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417207",
"author": "KC8RKO",
"timestamp": "2011-07-13T21:33:55",
"content": "Yeh, I was one of the guys who did 125 mile link with 802.11b, 2.5 miles is pretty easy to do with both homemade and fairly cheap commercial gear, but that doesn’t cheapen what they are doing. They are trying to create a whole network. With interfering stations and critical links on normal topography. When we set our record we went from mountain top to mountain top, which makes things a lot easier. We also didn’t limit ourselves to a $65 budget. We spent about $1500 on materials alone. I do really like their parabolic reflector. Wind loading can be a significant problem with a lot of dishes, their system seems to eliminate that. Looks like they could get better performance out of it though. The feed point they are using is just a stock folded dipole. Most of the energy radiated from it will not hit the parabola in the way they graphics show. The should really look into a better feed, such as a patch antenna. I would guess they could get a 4x to 10x performance gain with a better feed with their same reflector. Great job guys and good luck!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417212",
"author": "j0z0r",
"timestamp": "2011-07-13T21:43:27",
"content": "I haven’t heard any mention of Fresnel zones… Important when you’re talking wi-fi on great distances. But ya, the tech is old news, but using it to give people access to the internet they wouldn’t otherwise have – great jerb!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417860",
"author": "cutandpaste",
"timestamp": "2011-07-15T06:11:58",
"content": "Fresnel zone, meh. My experience with long-ish range wireless is simple:If you can see your target, and there is not too much noise, it will work.I’ve had a 17-mile 5.7GHz link running for about five years now over mostly flat terrain with trees. Even with plenty of height (one end up around 150 feet, the other around 60), the Fresnel zone is rather completely trashed, and it doesn’t seem to really matter: You can literally see between the two points.On the other hand, I’ve failed at 5.7GHz over distances of just a few miles because of a few trees obscuring line-of-sight. (2.4GHz worked acceptably, despite obviously having much higher background noise.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417985",
"author": "guillem",
"timestamp": "2011-07-15T14:52:52",
"content": "if you’re interested in long distance open wi-fi network check this project. they are deploying an amazingly huge networkhttp://guifi.net/en/node/2413/view/map",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "458600",
"author": "Wireless Geek",
"timestamp": "2011-09-18T19:09:45",
"content": "I am agree with wifigod “I think distance would be much more reliant on output power + antenna design + LoS.” we could say antenna design=antena TX.This is simple way to calculate your link budget.Thanks for this informativ post.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,143.895445
|
||
https://hackaday.com/2011/07/12/zzstructure-emulator/
|
Zzstructure Emulator
|
Brian Benchoff
|
[
"Misc Hacks",
"Software Development"
] |
[
"hypertext",
"operating system",
"Project Xanadu",
"zzstructure"
] |
[John Ohno] has been working on a zzstructure operating system written C since January. [John] realizes not many people know what a zzstructure is, so he posted a
demo
of his project. [John] has also put all the
code
online.
A
zzstructure
is both a hypertext and operating system unlike anything we have today. You could say that when it was first conceived in 1960 it was 100 years ahead of its time. [John]’s implementation of zzstructures operates on a 256-dimension grid and functions a lot like a multidimensional forum thread. Although that’s a lot to wrap your head around, it can probably best be explained by
[Ted Nelson]
, the creator of zzstructures.
The zzstructure was an integral part of the first hypertext project,
Project Xanadu
, started by [Ted Nelson] in 1960. The idea behind Project Xanadu is a sea change from the current implementations of
hypertext
, but the project fell into a chasm of development hell lasting more than 20 years.
Wired
did a story on
The Curse of Xanadu
in 1995, and to read about a wonderful idea – an information structure not based on the idea of paper – be supplanted by the web is just sad. The UI of [John]’s build resembles the first implementation of Xanadu, but without the split-screen and dual-cursor design.
We’re really impressed with [John]’s work, and even though he thinks it would be great for electronic organizers, we think a zzstructure implementation would be great for coding or development. We don’t see many software hacks but with something like this, it’s hard not to be impressed.
EDIT: A few weeks after this story was published, [John]’s friend finished
a more elaborate zzstructure emulator
in Python. The code
is up on GitHub
and looks very,
very
impressive.
| 14
| 14
|
[
{
"comment_id": "416636",
"author": "ENKI-][",
"timestamp": "2011-07-12T16:26:37",
"content": "A couple of minor corrections:* ZigZag is a side project of Xanadu. My implementation resembles the first implementation of ZigZag, not the first implementation of Xanadu.* A zzstructure isn’t an OS, it’s a datastructure. Ix happens to be an OS that stores everything in zzstructures.Thanks for covering this!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416641",
"author": "Max",
"timestamp": "2011-07-12T16:47:57",
"content": "This looks wonderful. It’s such a shame the current flat-paper model got adopted. I bet you can be a lot more productive if you have 256 dimensions to work with. I’d love to see more of this project and where it’s headed",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416673",
"author": "BLuRry",
"timestamp": "2011-07-12T18:40:47",
"content": "I’d rather use TheBrain. It’s not 256-dimensional but you can categorize links — and categorizing/color-coding a link is a lot like what he uses dimensions for in the first place. Oh, and TheBrain is graphical and modern, not to mention also cross-platform.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416710",
"author": "Aleksejs",
"timestamp": "2011-07-12T20:38:58",
"content": "In a few words – what would be the main advantages of zzstructure? And what are the main disadvantages?Thank you!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416714",
"author": "blackthursday",
"timestamp": "2011-07-12T20:40:31",
"content": "I wish we could get past the 256 dimension limit.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416718",
"author": "ruben",
"timestamp": "2011-07-12T20:59:44",
"content": "What’s the benefit of an OS using zzstructures ?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416720",
"author": "ENKI-][",
"timestamp": "2011-07-12T21:04:48",
"content": "@AleksejsA zzstructure is often compared to a spreadsheet or a relational database. In comparison to either, it is more flexible (Ted Nelson says that the ZZstructure “doesn’t force you to have a constant number of middle names”, which is to say that while it has tabular separation, there is the potential for variable insertion in the middle, unlike in an RDBMS, where it would break Codd’s rules, or a spreadsheet, where separating out middle names into extra cells would expand out the number of cells allocated to middle names to the maximum). It is also easier to implement than an RDBMS, though more difficult than a spreadsheet.On the other hand, a zzstructure can fairly quickly become disorganized. Such structures are primarily intended to sit right under a fairly direct user interface like mine, because having the ability to manipulate the links without reaching through a glob of syntactic sugar makes it easier to keep the structure clean. As such, it makes a poor substitute for an actual RDBMS (its primary feature is the swearing off of most of Codd’s rules), and because of its flexibility it is fairly unsuitable for actual financial spreadsheeting (we talk about cooking the books now, but with zz you might accidentally create an infinite loop in the profit margin).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416722",
"author": "ENKI-][",
"timestamp": "2011-07-12T21:08:39",
"content": "@blackthursdayFeel free to change that limit. It’s merely a constant in the code. I have it set there in order not to run over into parts of memory reserved for ACPI, etc., but I think you could probably get away with halving the number of cells and having eight times the number of dimensions.I considered 256 unnamed dimensions overkill, personally, and chose it just because it was a large round number. My AVR implementation of a zzstructure navigator has fewer (16, if I recall).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416738",
"author": "blackthursday",
"timestamp": "2011-07-12T21:38:49",
"content": "i was just kidding. this makes a neat piece of retro-computing. thanks for being good spirited about the teasing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416739",
"author": "ENKI-][",
"timestamp": "2011-07-12T21:39:05",
"content": "@rubenAt the moment, nada, since this is a toy. But, zzstructure navigators are fairly useful in an application context.The next demo video is planned to give a walkthrough (using Ix) of a way that zzstructures can be used in daily life. It would probably be more representative of something one might do in Dimscape or TiZZI (two other zzstructure navigator projects I’m involved with — an application program and a handheld organizer respectively), because Ix does not yet have nonvolatile storage.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416838",
"author": "Dixie Flatline",
"timestamp": "2011-07-13T02:21:57",
"content": "The main benefit of an OS running on zz’s, as far as I can discern, is IT’S ASTONISHINGLY COOL. :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416872",
"author": "pogyhauler",
"timestamp": "2011-07-13T03:50:55",
"content": "Everything I know about zzstructures, I just read here. and that’s probably how it’ll stay.But in the reading, the one thing that flashes is the orthogonality (coemergence?) with Hadoop.Quick convergence state comparison? like fixed depth indexes? sort of a soft FPGA for loadable transforms.Signal processing? soft radios? Emulation?Then again. it could be just indigestion.impressive. don’t stop.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417226",
"author": "Darkflame",
"timestamp": "2011-07-13T22:17:38",
"content": "Sounds somewhat a far extension of how the wave fedeation protocol represented conversation.Unlike liner lists (like this and 99% of every other communication form online), you could go back and branch of a new conversation tree at any point – and then new ones from that one as you see fit.I always thought the logical way to extend that was as a map.However, it never occored to me to have a multidimensional map. (well, beyond 2 anyway)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417276",
"author": "ENKI-][",
"timestamp": "2011-07-14T00:34:05",
"content": "@darkflameThat’s what I said when I first read the description of that protocol: it looks like a zzstructure. I tried, unsuccessfully, to convince people on reddit of this. I suppose Ted Nelson’s c. 2007 talk at Google might have had an impact after all.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,143.82533
|
||
https://hackaday.com/2011/07/12/wearable-video-coat/
|
Wearable Video Coat
|
Brian Benchoff
|
[
"LED Hacks",
"Wearable Hacks"
] |
[
"coat",
"led",
"wearable"
] |
[David Forbes] is no stranger to the weird and esoteric, so he created
a color LED TV built into a lab coat
. He plans on bringing it to Burning Man next month.
The RGB LEDs are mounted narrow flex boards, providing a 160×120 pixel NTSC display. Video processing is taken care of by an Xilinx FPGA that takes the YCrCb video feed from a video iPod and converts it into four separate RGB streams for the front, back, and the two sides. The requisite controls for brightness and color are on the shoulders.
Of course, the build wouldn’t be over-the-top without the ability to plug a Nintendo into a lab coat, so there’s an NTSC input on an RCA jack. Everything is powered by two 11.1 V, 5Ah radio-control LiPo battery packs that should power this for a while.
Check out a video of the LED lab coat below.
[youtube=http://www.youtube.com/watch?v=jtSm8Oom2n4&w=470]
| 13
| 13
|
[
{
"comment_id": "416597",
"author": "marks256",
"timestamp": "2011-07-12T15:12:44",
"content": "That’s awesome! I can’t wait to see it when it’s finished.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416600",
"author": "svofski",
"timestamp": "2011-07-12T15:13:52",
"content": "Well, add the cameras to make it “transparent”!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416601",
"author": "cirictech",
"timestamp": "2011-07-12T15:15:10",
"content": "$20,000 that’s a heck of a lot of money…. but really neat.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416607",
"author": "Don",
"timestamp": "2011-07-12T15:38:18",
"content": "The Cloak of Invisibility. Just add Cameras..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416611",
"author": "tooth",
"timestamp": "2011-07-12T15:45:29",
"content": "that is awesome! i want to do that to a car but don’t have the $$$$$$ to do so. if it cost $20,000 just for that bit on the lab coat imagine how much for a car.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416624",
"author": "DanJ",
"timestamp": "2011-07-12T16:01:19",
"content": "Not only cool, this is real engineering. David Forbes is an amazing maker. It’s been a pleasure to watch his projects over the years.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416630",
"author": "kobilica",
"timestamp": "2011-07-12T16:14:23",
"content": "Wow, niiiceee!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416662",
"author": "zeduude",
"timestamp": "2011-07-12T18:07:44",
"content": "praises to the uber-geek!! :Di just can’t help thinking that with a bunch of flexible oled displays his vidéo-lab-coat could get a lot cheaper….and comfier…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416685",
"author": "DanAdamKOF",
"timestamp": "2011-07-12T19:10:45",
"content": "“YCrCb” should be “YCbCr”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416708",
"author": "Hirudinea",
"timestamp": "2011-07-12T20:28:26",
"content": "It ain’t “Predator” but its getting there.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416723",
"author": "liard nelson",
"timestamp": "2011-07-12T21:09:09",
"content": "as useless as an usb humping dog. but i want one.But, basically, why is this considered as a “hack” ? Putting NTSC Video on an 160×120 pixel led display.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416788",
"author": "mjrippe",
"timestamp": "2011-07-12T23:13:26",
"content": "@steve – I’m so proud of you for finally coming out of the closet!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417189",
"author": "Slipster",
"timestamp": "2011-07-13T20:50:01",
"content": "Seems a little rigid but definitely a “10” on the wow-factor.However, $20k price tag makes me gag a little.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,143.948433
|
||
https://hackaday.com/2011/07/12/one-click-unbrick-for-samsung-phones/
|
One-click Unbrick For Samsung Phones
|
Mike Szczys
|
[
"Cellphone Hacks"
] |
[
"cellphone",
"mobile",
"samsung",
"unbrick"
] |
[Adam Outler] has been pretty heavy into mobile device hacking lately. The biggest problem with that field is recovering from back flashes or development firmware glitches. In many cases you can use a JTAG programmer to reflash stock firmware to resurrect a handset. Unfortunately you’ll be hard pressed to find a phone that comes with a JTAG header, and soldering to the microelectronic boards is not for the faint of heart.
But a solution is here, [Adam] pulled together a wide set of resources to create
a package to unbrick Samsung phones
. Now we’re sure that there’s more than a handful of people who would argue that a bad firmware flash that can be fixed this way means that the phone wasn’t actually “bricked” in the first place. But what we see is one more barrier torn down between being a hardware user and becoming a hardware hacker. You’re much more likely to get in there and get your hands dirty if you know that you’ll be able to undo your mistakes and reclaim you precious pocket hardware. See just how easy it is in the video after the break.
[youtube=http://www.youtube.com/watch?v=tEotRhChSE4&w=470]
| 20
| 20
|
[
{
"comment_id": "416643",
"author": "j0z0r",
"timestamp": "2011-07-12T16:50:37",
"content": "I think it’s crap that you can turn any high end consumer electronic into worthless plastic with a few ones and zeroes… I mean, where’s the virus killer app that just bricks the planet?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416725",
"author": "james",
"timestamp": "2011-07-12T21:16:54",
"content": "thx",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416802",
"author": "Jonathan Wilson",
"timestamp": "2011-07-13T00:23:03",
"content": "Reminds me of when I modified a dbus config file and caused my Nokia N900 linux phone to refuse to boot properly. Was up till about 3am booting various kernels (using the flasher tool option to load a kernel into the phone and boot it) and other things until I finally got something on the phone that could mount the root filesystem so I could copy off anything important. Then I was able to reflash the kernel/rootfs and my phone worked again.Try doing THAT with anything from Samsung :P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416827",
"author": "Eric in Milpitas",
"timestamp": "2011-07-13T01:41:53",
"content": "Very cool. Looks like a nice alternative to Odin.That said. If download mode works you’re not bricked.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416860",
"author": "Adam Outler",
"timestamp": "2011-07-13T03:11:57",
"content": "@Jonathan Wilson That’s the kind of stuff I do for fun in my spare time on my Samsung device.SBL> eraseall units\r\nbbm_erase_all: step 1. Start unit=1, End unit=2.\r\n.\r\nbbm_erase_all: step 1. Start unit=52, End unit=2004.\r\n......................................................................................................................................................................................................\r\nbbm eraseall success.\r\nSBL> reboot\r\ncommand_loop: parse command error! (reboot)\r\nSBL> reset\r\nRebooting...\r\n\r\nSB\u00101\r\n-----------------------------------------------------------\r\n Samsung Primitive Bootloader (PBL) v3.0\r\n Copyright (C) Samsung Electronics Co., Ltd. 2006-2010\r\n-----------------------------------------------------------\r\n\r\n+n1stVPN 2688 \r\n+nPgsPerBlk 64 \r\n+n1stVPN 3008 \r\n+nPgsPerBlk 64 \r\nPBL found bootable SBL: Partition(4).\r\n\r\nSet cpu clk. from 400MHz to 800MHz.\r\nOM=0x9, device=OnenandMux(Audi)\r\nIROM e-fused - Non Secure Boot Version.\r\n\r\n-----------------------------------------------------------\r\n Samsung Secondary Bootloader (SBL) v3.0\r\n Copyright (C) Samsung Electronics Co., Ltd. 2006-2010\r\n\r\n Board Name: ARIES REV 03\r\n Build On: Jun 8 2011 21:44:47\r\n-----------------------------------------------------------\r\n\r\nRe_partition: magic code(0x0)\r\n[PAM: ] ++FSR_PAM_Init\r\n[PAM: ] OneNAND physical base address : 0xb0000000\r\n[PAM: ] OneNAND virtual base address : 0xb0000000\r\n[PAM: ] OneNAND nMID=0xec : nDID=0x50\r\n[PAM: ] --FSR_PAM_Init\r\nfsr_bml_load_partition: pi->nNumOfPartEntry = 12\r\npartitions loading success\r\nboard partition information update.. source: 0x0\r\n.Done.\r\nread 1 units.\r\n==== PARTITION INFORMATION ====\r\n ID : *unknown id* (0x0)\r\n ATTR : RO SLC (0x1002)\r\n FIRST_UNIT : 0\r\n NO_UNITS : 1\r\n===============================\r\n ID : *unknown id* (0x1)\r\n ATTR : RO SLC (0x1002)\r\n FIRST_UNIT : 1\r\n NO_UNITS : 1\r\n===============================\r\n ID : *unknown id* (0x14)\r\n ATTR : RW STL SLC (0x1101)\r\n FIRST_UNIT : 2\r\n NO_UNITS : 40\r\n===============================\r\n ID : *unknown id* (0x3)\r\n ATTR : RO SLC (0x1002)\r\n FIRST_UNIT : 42\r\n NO_UNITS : 5\r\n===============================\r\n ID : *unknown id* (0x4)\r\n ATTR : RO SLC (0x1002)\r\n FIRST_UNIT : 47\r\n NO_UNITS : 5\r\n===============================\r\n ID : *unknown id* (0x15)\r\n ATTR : RW STL SLC (0x1101)\r\n FIRST_UNIT : 52\r\n NO_UNITS : 20\r\n===============================\r\n ID : *unknown id* (0x6)\r\n ATTR : RO SLC (0x1002)\r\n FIRST_UNIT : 72\r\n NO_UNITS : 30\r\n===============================\r\n ID : *unknown id* (0x7)\r\n ATTR : RO SLC (0x1002)\r\n FIRST_UNIT : 102\r\n NO_UNITS : 30\r\n===============================\r\n ID : *unknown id* (0x16)\r\n ATTR : RW STL SLC (0x1101)\r\n FIRST_UNIT : 132\r\n NO_UNITS : 1146\r\n===============================\r\n ID : *unknown id* (0x17)\r\n ATTR : RW STL SLC (0x1101)\r\n FIRST_UNIT : 1278\r\n NO_UNITS : 536\r\n===============================\r\n ID : *unknown id* (0x18)\r\n ATTR : RW STL SLC (0x1101)\r\n FIRST_UNIT : 1814\r\n NO_UNITS : 140\r\n===============================\r\n ID : *unknown id* (0xb)\r\n ATTR : RO SLC (0x1002)\r\n FIRST_UNIT : 1954\r\n NO_UNITS : 50\r\n===============================",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416862",
"author": "pogyhauler",
"timestamp": "2011-07-13T03:20:48",
"content": "Ya, N900. late night scrambling.You’re a pioneer. good for you.Now, How’s ‘about you port Moblin to Every Nokia.While your at it, see what you can do about unlockingsigned ROMs.Lemme know when your done.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417063",
"author": "adam outler",
"timestamp": "2011-07-13T15:02:00",
"content": "Didn’t nokia just sign with Microsoft Win phone7 for their mobile devices? Does that mean you get to take your BSOD with you?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "419163",
"author": "Bobstevejim",
"timestamp": "2011-07-18T15:35:28",
"content": "@adam outler, RE: portable BSoDwin.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "480932",
"author": "Aldo",
"timestamp": "2011-10-16T01:56:40",
"content": "Nice reverse engineer on that Nokia.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "725667",
"author": "Terry_boy22",
"timestamp": "2012-08-07T06:29:08",
"content": "Thanks you guys, I will be trying this soon, once I get my Galaxy S2 Jigged, hope it works!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "748935",
"author": "brandon voigt",
"timestamp": "2012-08-22T23:15:33",
"content": "HELP ME PLEASE!!! so i went to put run the clockwork mod on my phone i flashed it with the rom app then when i went to reboot it..it got stuck on the samsung screen. so i plug it on doing the hold volume button and the next screen that comes up is says warning a custom os can cause critical problems in phone and installed applications. if you want to download a custom os, press the volume up key. otherwise, press the the down key to cancel. up takes me to the downloading screen and down just takes me to the samsung screen. I was woundering what can i do to save my phone? i have the samsung infuse 4g. thank you for your help. Have a great day.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "753771",
"author": "Rohan Kandwal",
"timestamp": "2012-08-25T14:23:35",
"content": "unbrick all model android phones here for free.http://www.itcse.com/2012/08/unbrick-android-phone-touchscreen/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "849409",
"author": "ERIC MAC",
"timestamp": "2012-11-01T09:33:55",
"content": "I am so frustrated ! I have a Samsung Galaxy S Stratosphere… its hard bricked coz Odin froze. I have tried everything to get it to boot. nothing is working ! your method doesnt work !!!!!!!!!!!!!!!!!!!!!!!!!!!! is there a way to fix this? all I get is the keyboard to light up… ive tried the Jig too… and nothing",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "980914",
"author": "johndee",
"timestamp": "2013-03-19T14:12:24",
"content": "bricked in download mode???you’re not bricked yet man..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "988412",
"author": "Gemma",
"timestamp": "2013-04-02T22:29:15",
"content": "what does a custom os actually do?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "1126647",
"author": "andy",
"timestamp": "2013-12-08T17:29:11",
"content": "Any ideas Guys how to unbrick my iphone 5s after an update its says no service – lots of People seem to be having the same problem ?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "1153792",
"author": "Angie tan",
"timestamp": "2014-01-03T04:04:38",
"content": "help me pleeeaase :( i have a samsung galaxy y gt-s6310 I did everything but I did the stupidest thing before my phone got bricked. I FORGOT TO TURN ON DEVELOPER OPTIONS . and i can;t connect to pc. is there another way to connect to pc? plss helpreply asap.(By the way Im still 15 and im a noob)(phone is rooted)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "2394218",
"author": "David",
"timestamp": "2015-01-31T05:18:50",
"content": "this is only for a soft brick am i correct? My phone is hard bricked and I can’t get it debricked. I tried the sd card method, i tried usb jig, i am trying to get files for qpst/emmc software download. or its off to jtag",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "2429161",
"author": "tutorials",
"timestamp": "2015-02-10T18:15:56",
"content": "Can you tell us more about this? I’d love to find out more details.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "2748019",
"author": "mickeymouse028",
"timestamp": "2015-10-10T15:18:04",
"content": "Helo guys, hope i found you all well and willing to help me. how do i unbrick my samsung galaxy note i9220. it has just went black screen after flashing N7000 (16Gig) pit file its nolonger booting. tried to hold down 3combo (volume down+home+power) its not working. tried even going into the recovery its not working again. after all even if i connect it to the computer its not even showing up or even the battery sign that its charging…..ALL NOTHING. please guys um kindly asking for a way out. this is the only phone i have with me",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,144.072733
|
||
https://hackaday.com/2011/07/12/re-manufacturing-inkjet-cartridges-for-3d-printing/
|
Re-manufacturing Inkjet Cartridges For 3d Printing
|
Mike Szczys
|
[
"cnc hacks"
] |
[
"3d printer",
"binder",
"cartridge",
"ink jet"
] |
[Nullset] uses inkjet printer technology for his 3D printing needs. We usually think of hot-plastic printing like the RepRap or Makerbot when we hear about rapid prototyping, but this setup uses a liquid bonding agent to turn powder into a solid structure. Standard inkjet cartridges can be used to precisely place the bonding agent, but it’s hard on the heads and you have to replace them often. [Nullset] is getting pretty good at it, and decided to write
a tutorial on the modifications necessary to print with bonding liquid
.
At its core, the method injects binder into the cartridge through one port while using a second for drainage. [Nullset] found that the needle fittings used to inflate a basketball work great for this. He drills a couple of holes that the threaded end of the needles fit into. That connection is sealed with some epoxy, and the tubing that delivers the binder is zip-tied to the needles. A bit of purging is necessary to get rid of any old ink, but after the initial flush you’ll be up and running pretty quickly. He figures the whole process can be one in around 10 minutes once you get the hang of it.
| 6
| 5
|
[
{
"comment_id": "416668",
"author": "Bogdan",
"timestamp": "2011-07-12T18:20:58",
"content": "Good tutorial, but nothing extraordinary about it. It’s just what i (and maybe many others) would have thought of given the task.I’m still waiting for some sort of ink that hardens and turns into the printed part itself..albeit the possible very long printing time the resolution should be great.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "594026",
"author": "Kobus",
"timestamp": "2012-03-03T16:17:21",
"content": "I have seen the Objet printers use this method. they seem to use various UV curable compounds, which are built with an inkjet system in 16 micron layers. can even do multimaterial. I think it would be a valid experiment to see if one can use compounds purchased from them with a hacked printer printhead and gantry system. I just cant seem to find any resources that describe how to interface to typical off-the-shelf printheads…",
"parent_id": "416668",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "416671",
"author": "nullset",
"timestamp": "2011-07-12T18:28:11",
"content": "Of course it’s nothing extraordinary. It does, however, save around $160+/print cartridge. These cartridges cost $175 each from Z Corp. That makes 3D printing unfeasibly expensive. $10 each is much more reasonable, and enables us to experiment with the technology.Oh, and the warranty is probably void :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "960708",
"author": "michael g mesa az",
"timestamp": "2013-02-15T20:19:36",
"content": "hi !!! great tut !! thank you !i’ve my own ideas . i like to use old copiers to print 3d parts.do i have to fill all the color cartridges. can i use laser from dvd playersto harden uv resins [will dirty resins[ colored]] work or dose it have to bein the uv to hearden . can an additive filler [powder binders] like hydrocal or hydroperm be added into resin [in the cartridges] to print? or is there a chemical way to harden the printed layers?looking forward to your ideas’thank you!michael g mesa az.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "1337175",
"author": "akka69",
"timestamp": "2014-04-09T14:50:25",
"content": "Hi,i’ve heard of a novel faster way to 3D print with plastic that could take advantage of inkjet printing heads.The 3D printer moving head prints a dark ink mask on a white platic powder layer and carries a large Infrared lamp.The dark ink absorbs more heat from the lamp that the surrounding white powder, until it brings the powder to melting point where it’s colored dark, thus binding the powder grains.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "1337195",
"author": "akka69",
"timestamp": "2014-04-09T15:03:47",
"content": "Hi I wonder if an inkjet head could deliver enough water droplets to efficiently bind a plaster or cement powder layer.The water volume magnitude should be around: printing surface * half of layer thickness.For a 4×6 inches size printing surface, and 50µm thick, layers,thiis means the head should be capable to deliver a water volume about: 0.25 cm3/s.Is that realistic?",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,144.5724
|
||
https://hackaday.com/2011/07/12/accounting-for-material-loss-when-laser-cutting/
|
Accounting For Material Loss When Laser Cutting
|
Mike Szczys
|
[
"Tool Hacks"
] |
[
"kerf",
"laser cutter"
] |
When you cut something out, you lose a bit of material in the process. Think of a table saw and the sawdust it produces, that’s the waste material lost in an area the width of the blade. It’s really easy to measure that, just measure the blade. But [James] started wondering about
a good way to measure material loss from a laser cutter
.
Why does it matter? If you’ve designed pieces that should fit together with each other, loss of material can lead to joints that aren’t tight. [James] figured out that the loss could be measured by making several cuts within a rectangular frame. You can see his test pieces above, with ten strips cut out of each frame. After the laser is done doing it’s work just slide all the pieces together and measure the opening created at one end. It helps to have
an enhanced caliper
to make the measurement easy to read. Now divide that distance by the number of laser passes and account for that dimension next time you design parts for the cutter.
| 22
| 22
|
[
{
"comment_id": "416528",
"author": "Phlip",
"timestamp": "2011-07-12T11:27:51",
"content": "Couldn’t you just weight it before and after?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416529",
"author": "poisonfist",
"timestamp": "2011-07-12T11:34:28",
"content": "you lose, not loose.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416544",
"author": "Pedro",
"timestamp": "2011-07-12T12:15:08",
"content": "I think the word you were looking for when writing this post is “kerf”.And how, exactly, would hold and max functions on your callipers help with these measurements? Surely you’re just taking one measurement.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416546",
"author": "fartface",
"timestamp": "2011-07-12T12:17:28",
"content": "Odd way of doing it.I cut a 1cm X 1cm square and then take the caliper to it. Oh look I need to account for .1mm on each side.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416551",
"author": "Aaron",
"timestamp": "2011-07-12T12:32:48",
"content": "“Loose a bit of material”?LOSE THE HOUNDS!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416554",
"author": "Aaron",
"timestamp": "2011-07-12T12:36:28",
"content": "Phlip: Sure, but how’s that help with figuring out the dimensions?fartface: It seems a good way of amplifying the lossage if you don’t have tools fine enough to measure it on a single cut.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416557",
"author": "BrokenTrace",
"timestamp": "2011-07-12T12:39:36",
"content": "In typical CNC work you account for kerf by using a standard offset, called cutter offset. I would imagine that laser cutters are more than capable of this. Accounting for the kerf is all in the design.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416560",
"author": "Kevin Gunn",
"timestamp": "2011-07-12T12:59:05",
"content": "I do the same thing, but I hadn’t thought to do MULTIPLE rectangles to make it a more accurate measurement. I’m definitely doing this tonight! Measuring the loss on a single rectangle just doesn’t cut it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416562",
"author": "effigy",
"timestamp": "2011-07-12T13:05:55",
"content": "@kevin gunn taken 6th grade science yet? ;)that’s called multiple trials or repeated measurments,measuring a single rectangle gives you almost no information from a statistical perspective.And did the author seriously not know the term “kerf”? you’d think basic technical jargon would be a pre-req for writing here – “Think of a table saw and the sawdust it produces, that’s the waste material lost in an area the width of the blade. ” lol, nice definition of kerf at least…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416563",
"author": "effigy",
"timestamp": "2011-07-12T13:07:17",
"content": "also @ broken trace, you only use a standard offset in sloppy cnc work, any decent machine/machinist sets the offset EACH TIME by measuring the actual tool with a probe, in this regard a thermal probe might do the trick for measuring your laser cutters spot size at varying Z levels.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416564",
"author": "danman1453",
"timestamp": "2011-07-12T13:15:04",
"content": "I believe broken trace is referring to a CNC in a manufacturing setting where the program is repeated many times with the same tool on ‘identical’ work pieces. Just checking the dimensions against the expected values to account for tool wear. The tool offset would only need adjusted at program set-up and after every tool change. A separate offset group being used for tool wear.In regards to a laser tool offset, there ‘shouldn’t’ be any tool wear, or variations between programs. So the offset would only need to be set upon installation, and after any machine maintenance.Just my thoughts.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416605",
"author": "Kevin Gunn",
"timestamp": "2011-07-12T15:24:51",
"content": "@effigy: This is NOT repeated measurements nor multiple trials we’re talking about. That would involve measuring either the same rectangle several times (repeated measurements) or cutting many rectangles and measuring each (multiple trials).This suggestion is to use multiple cuts to magnify the size of what you’re measuring (the kerf) in the same way an old tube-style rain gauge typically collects rain over a much larger area in order to make the measurements more representative and easier to read.Yes, this is a “doh” moment for me since I should have thought of it myself, but I figured that since you’re being snarky at should at least point out that you’re wrong about your “basic technical jargon”. I believe by your own standards you now have to refrain from further postings here. :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416612",
"author": "password",
"timestamp": "2011-07-12T15:46:19",
"content": "@danman1453 take a look at the actual write up [James] tested several different materials and the average kerf varied from 0.125 to 0.20 so you need to measure each time you are cutting a different material(that is if you want that degree of accuracy)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416628",
"author": "BruceJ",
"timestamp": "2011-07-12T16:11:39",
"content": "Measure the nominal length of cuts, easy enough, you know the dimensions of all the pieces, since you’re feeding a dimensioned file to the cutter.Weigh the stock before, weigh all the cut pieces and leftover after.(W.stock – W.pieces)/L.design = W.kerf/L.unit length.Knowing the density of your material, you can calculate back to the width of the kerf.Probably a more accurate method than fiddling about with calipers measuring multiple pieces.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416635",
"author": "The Ideanator",
"timestamp": "2011-07-12T16:24:06",
"content": "We did that with precision dowel pins at the first place I worked at for holes and use the calculated values for the machines offset (a standard feature on the big laser cutters), in fact the first exercise they had me do was making some washers and testing them. I hadn’t used feeler gauges since that topic hadn’t been brought up, but I imagine it would have at some point.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416694",
"author": "Wes",
"timestamp": "2011-07-12T19:58:42",
"content": "OT: Well, we got “lose” and “kerf.” Now how about “its” and the multiple comma splices?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416744",
"author": "Michael Bradley",
"timestamp": "2011-07-12T21:46:42",
"content": "Good writeup? possibly. usefull, not realy. Do it right.I know my focus distance, and my kerf width for each material/thickness I use. I take this into account when I cut a part, I use a good CAM system, and I set the tool width to the laser width (kerf), and I cut on the outside of the line.And my parts are all +/- .003″, within the typical .005″",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416775",
"author": "silvesterstillalone",
"timestamp": "2011-07-12T22:43:55",
"content": "@ passwordOuch. That is huge. I shall sit reaffirmed in my belief that laser cutters have inferior precision.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416793",
"author": "Will",
"timestamp": "2011-07-12T23:31:01",
"content": "Wouldn’t it have to be divided by two afterwards? Usually, you set the laser to cut right on the line, which means it cuts away half of the part’s material, and half waste.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416815",
"author": "John",
"timestamp": "2011-07-13T01:10:41",
"content": "Will is right.But this is useless. I laser cut interlocking 3D frames all the time, in fiberglass too, so I use a very high level when compared to wood or plastic. That little kerf is good; parts actually fit together without painful filing. while maintaining a tight fit.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416852",
"author": "Simon",
"timestamp": "2011-07-13T02:45:04",
"content": "@effigy“you’d think basic technical jargon would be a pre-req for writing here…”Thanks. I needed a good laugh today!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416944",
"author": "Aaron",
"timestamp": "2011-07-13T08:50:53",
"content": "Wes: What are you, kidding? If I was going to get all worked up over people fucking up simple stuff like apostrophes and clause boundaries, I’d have killed myself by now. Hell, I wouldn’t even have bothered to say anything about lose/loose this time, except that I had a clear shot at a dribbling pun.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,144.310527
|
||
https://hackaday.com/2011/07/13/diy-wiper-speed-control-and-collision-avoidance/
|
DIY Wiper Speed Control And Collision Avoidance
|
Mike Nathan
|
[
"Microcontrollers",
"Transportation Hacks"
] |
[
"automotive",
"ir",
"laser",
"msp430"
] |
On many new cars, automatic wiper speed control can be had as an upgrade, though most cars do not offer front-end collision prevention at all. [Rishi Hora] and [Diwakar Labh], students at the Guru Tegh Bahadur Institute of Technology in New Delhi,
developed their own version of these features
, (PDF warning, skip to page 20) which they entered into last year’s Texas Instruments Analog Design Contest. Under the guidance of professors [Gurmeet Singh] and [Pawan Kumar], the pair built the systems using easily obtainable parts, including of course, an MSP430 microcontroller from TI.
The collision prevention system uses a laser emitter and an optical detector to estimate the distance between your car and the vehicle in front of you, sounding an alarm if you are getting too close. In a somewhat similar fashion, the wiper speed control system uses an IR emitter and detector pair to estimate the amount of water built up on the windshield, triggering the wipers when necessary.
While not groundbreaking, the systems would be quite handy during monsoon season in India, and seem easy enough to install in an older vehicle. The only thing we’re not so sure about is pointing lasers at cars in traffic, but there are quite a few available alternatives that can be used to measure distance.
Continue reading to see a video walkthrough and demonstration of both systems.
[youtube=http://www.youtube.com/watch?v=euVh5xtFs1M&w=470]
| 24
| 23
|
[
{
"comment_id": "417105",
"author": "fartface",
"timestamp": "2011-07-13T17:48:17",
"content": "What I really want is a DIY Adaptave speed Cruise control.Make it easy to draft a Semi truck by making the car speed up and slow down with the trucker that cant keep his speed stable.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417106",
"author": "Isotope",
"timestamp": "2011-07-13T17:51:56",
"content": "@fartface, sounds like that might just conflict with the collision avoidance system",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417111",
"author": "Mike",
"timestamp": "2011-07-13T18:00:05",
"content": "I wonder how insurance companies will take to people installing DIY safety systems in cars…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417116",
"author": "Blue Footed Booby",
"timestamp": "2011-07-13T18:23:18",
"content": "@fartfaceWhat’s the point of drafting behind a vehicle that’s not maintaining a steady speed? The mileage loss from frequent acceleration is almost guaranteed to cancel out the gain from drafting, and that’s if you assume you’ll never incur any cost as a result of tailgating a much larger vehicle with an enormous blindspot and irregular speed.Hypermiling is a classic example of a false economy.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417117",
"author": "Philippe",
"timestamp": "2011-07-13T18:23:53",
"content": "Don’t get me started on insurance companies.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417126",
"author": "ScottinNH",
"timestamp": "2011-07-13T18:57:36",
"content": "@Blue Footed BoobyAre you actually asserting that the driver in front is maintaining a constant speed? Think about that for a moment longer. Drafting works equally well behind a teammate, or behind an opponent.‘Frequent acceleration’ is just a parameter you are throwing in to support your argument.I have never seen a cargo vehicle on the highway which demonstrates ‘frequent acceleration’… what I see is a relatively stable speed which varies -/+ a few percentages (but that is enough to cause the gap to narrow or increase).Dismissing something you do not fully understand as ‘false economy’ does no one any benefit.~~~~~~~~~~~~~~~~~`Back to the other poster: Cruise control is really meant to minimize fatigue. Cruise control is -not- about efficiency (unless you erratically change speeds). You can easily beat cruise control efficiency since you can anticipate not just slower cars ahead of you, but uphill/downhill and speed limit changes.I drive 14 miles to work using secondary roads which do not have traffic lights. In a 15 year old Corolla (3 speed auto) I still manage 31 mpg averaged at the pump (I think that exceeds EPA estimates). If I took the highway, I would be hitting my breaks every few seconds since it is bumper to bumper (and not tailgating someone is an invitation for everyone to cut you off).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417128",
"author": "Paul",
"timestamp": "2011-07-13T19:02:23",
"content": "@Isotope I think an adaptive cruise control would work hand in hand with a collision avoidance system. The collision avoidance system would just make sure you’re not too close to the other car in front. If you are 20 feet behind another vehicle then you are fine to engage the adaptive cruise control. Then the system just keeps you at 20 feet distance. If the vehicle in front of you slams on it’s brakes your car would keep pace with the other vehicle (providing the collision avoidance system is tied into the brake system as well and that your car can decelerate at the same rate as the vehicle in front of you). Under normal conditions of just adaptive cruise control it will accelerate and then take it’s “foot” off the gas like normal cruise control. When the vehicle in front of you slows down and in this case I will assume the system is not tied into the brake system then when you get to 10 feet of the car in front of you, your car will sound an alarm telling you to brake because you are close to the car.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417133",
"author": "Blue Footed Booby",
"timestamp": "2011-07-13T19:15:51",
"content": "@ScottinNHRe-read his post, then my post. He was talking about drafting behind truckers that CAN’T maintain a constant speed. As you point out, cruise control really isn’t for efficiency, so he’s using the wrong tool for the job to receive dubious benefits, and risking getting pulled over to boot.Dismissing a post which you did not read and then making a snarky reply does no one any benefit.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417134",
"author": "brad",
"timestamp": "2011-07-13T19:24:18",
"content": "drafting a semi is illegal in many places. sure, you can get away with it and claim you weren’t drafting. that is, until the cop who pulled you over asks what that fancy little gadget is…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417158",
"author": "nchntr",
"timestamp": "2011-07-13T19:34:26",
"content": "I have a 98 Safari Van (not in the best state of tune) I can easily gain 4-5 mpg using cruise control (coast/resume/accel) vs. manual operation while driving hiway or city. Tested with RealTime ODB data and confirmed at the pump (calculation). Cruise Controll is less aggressive than me :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417165",
"author": "fartface",
"timestamp": "2011-07-13T19:47:10",
"content": "“so he’s using the wrong tool for the job to receive dubious benefits, and risking getting pulled over to boot.”at 50 feet behind a tall box truck I am getting a 15% increase in gas mileage. I see people drive closer than that all the time and at 50 feet I have a lot of time to react as Semi truck cant stop instantly and my car can stop a LOT faster (unless the semi just drove into a 9,000,000 block of concrete) adaptive will let me keep a safe distance as the trucker forgets to hit the gas going up hill and has he forgets to let off the gas going down hill. Semi truck vary between 70mph and 55mph simply because the trucker is busy watching a movie and talking on the cellphone while eating and smoking all at once",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417166",
"author": "fartface",
"timestamp": "2011-07-13T19:48:12",
"content": "It’s better than my idea of a spring loaded clamp… drive up to the trailer bumper and latch on. put car in neutral and achieve 900mpg.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1620476",
"author": "Redion",
"timestamp": "2014-07-07T03:38:12",
"content": "Priceless :-)",
"parent_id": "417166",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "417175",
"author": "Tech Joker",
"timestamp": "2011-07-13T20:13:27",
"content": "@FartfaceAt 50′ you have less than 1/2 a second to respond! That assumes you aren’t texting, fiddling with the radio, talking to a passenger or on a cell phone, looking in the mirror, checking your speed…..Many Semi drivers vary their speed to discourage people from drafting. It’s not that they can’t hold a steady speed (on level ground), it’s that they don’t want idiots riding their bumpers. On hills they have to change gears numerous times, and often time the engines de-rate if the RPMs go out of range.Drafting is not only illegal but more dangerous than you know. You can’t see the road ahead, so you get no advance notice of a problem and you are traveling at 70 MPH that is traveling over 102′ per second. Accident re-constructionists use 2 seconds as an average response time to see, respond to and have the vehicle respond to an event. That means you have traveled 204′ before you start to slow / swerve (assuming you can swerve). That is how you end up with vehicles under semis and dead people in the car.Now lets assume you actually do manage to avoid hitting the Semi because you were attentive and lucky. What about the car behind you where the driver is texting hits your vehicle and SHOVES your car under the Semi??? Your still maimed or dead and your car is still totaled.Better to leave about 6 seconds or more between you and the vehicle in front of you then if something happens you have time to hit the brakes AND look in the mirror and use up the extra space so the idiot behind you doesn’t plow into you. That has saved me from an accident many times.—The hack is interesting and I am going to be doing some research into at least the auto wipers, I have wanted that feature on my truck for a while. Also looking into adding Blind Spot indicators (So I can see fartface)Insurance companies in the States would probably deny coverage if you tried to use non factory crash avoidance. Not sure I am ready for that leap of faith. For that matter they would probably deny coverage for the wiper mod if they could determine that was a factor in the accident.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417190",
"author": "ScottinNH",
"timestamp": "2011-07-13T20:51:20",
"content": "@brad – Drafting WITH a semi is illegal in many places, but drafting BEHIND a semi is not illegal.@Blue Footed Booby – I read fartface’s comment and my response was to you. fartface is correct that truckers (and other vehicles) do not maintain consistent speeds, but you took it in a different direction with “Hypermiling is a classic example of a false economy”. That does not follow.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417195",
"author": "Tech Joker",
"timestamp": "2011-07-13T21:04:38",
"content": "@ScottinNH – Drafting most certainly is illegal. It is normally called “Tailgating” or “Following too closely” or even “Unsafe Driving” or “Failure to maintain a safe distance”In most states if you hit a vehicle from the rear the fault is yours because you obviously were following too closely or not paying attention.—Many Cruise controls don’t maintain a constant speed either for many reason including putting the wrong size tire and wheels on the vehicle, or non-standard injectors, or different injector pump, mis calibrated apps (TPS) sensor….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417221",
"author": "ScottinNH",
"timestamp": "2011-07-13T21:57:47",
"content": "@Tech Joker –Mythbusters did a segment where an 11% increase in MPG was achieved from drafting a semi trailer at a distance of 100 FEET. Is 100 feet tailgating???At 68 miles per hour, that is just under FOUR SECONDS four seconds from the leading vehicle.(As a safety note, “4 seconds” is a good safety practice at ANY speed).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417222",
"author": "ScottinNH",
"timestamp": "2011-07-13T22:00:33",
"content": "Oops, I just realized that math was wrong… 68mpg is 100 feet in 1 second, not 4!I must be counting faster when on the highway. :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417236",
"author": "Tech Joker",
"timestamp": "2011-07-13T22:46:41",
"content": "@ScottinNHOh I had a nice long paragraph explaining that you math did not compute, before I saw your correction.I know it’s been a few years but when I was in drivers ed the rule was 2 seconds separation at 30MPH and under, 3 seconds to 55MPH, and 4 seconds or more over that.I have seen the Mythbusters segment, I believe they also stated that NONE of what they tried was a safe distance to follow a Semi.If you want better fuel economy by a vehicle that gets more MPG and don’t endanger yourself, your passengers and all the people travelling around you. The graveyards are FULL of people that thought they were better than most and could react fast enough.I had the unfortunate experience of seeing first hand someone ‘drafting’ a semi and run right square under it. I was passing the semi when traffic ahead came to a quick stop (not panic) due to another accident and gawkers. I applied my brakes as did the semi. The guy following the semi did not react in time and I watched him with a panicked look as he smashed into the Semi.I was the first on the scene and it was not pretty! Lets just say an open casket was not an option. I am not sure retrieving all the body parts was either.Sorry I am probably a little over sensitive on this subject having seen that and having seen a semi cream a car on the side of the road (with a driver inside). I drive about 85,000 miles a year.I take driving very seriously and always know what is in front of me, what is beside me and what is behind me. Types of vehicles, number of vehicles, if they are gaining on me …Probably the only thing worse than following too closely is weaving in and out of traffic. You probably won’t be in an accident, but you will very likely cause one.And with this I leave this subject behind as this is Hack a Day and not “Driving Safely Daily”.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417393",
"author": "DarkInvader",
"timestamp": "2011-07-14T07:32:48",
"content": "Hi to all, this anti-collision system that uses laser is very cool, but is not effective in all weather conditions, I think unfortunately it does not snow much in New Delhi, laser beam can not pass through the snowflakes as they are solid unlike the droplets’ water, however, is a good starting point :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417450",
"author": "JA12",
"timestamp": "2011-07-14T11:48:15",
"content": "When I was in a driving school the instructors taught us that as a rule of thumb, safety distance is speed (kph) converted to meters. 100kph -> 100 meters (62mph -> 328 feet) for example.The lamp-posts (in this country) are 50 meters away from each other, so it’s a no-brainer to estimate the safe distance between you and the car ahead.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417525",
"author": "sp00nix",
"timestamp": "2011-07-14T15:35:16",
"content": "I just use the two optical sensors built into my face",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417545",
"author": "Paul",
"timestamp": "2011-07-14T16:48:15",
"content": "You have to remember that the semi truck ahead of you when slowing down doesnt come to an instantaneous stop. When on the highway if semi driver begins to hit the brakes and you are 100 feet behind it doesn’t take 1.2 seconds for you to hit him, it all depends on the rate at which he applies the brakes as he will still be traveling forward. Even if he slams on the brakes it will take a fair amount of time to come to a stop. Which will give someone a fair amount of reaction time coupled with the fact that your car can stop MUCH faster than the truck.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418017",
"author": "jh",
"timestamp": "2011-07-15T16:46:22",
"content": "I drive a gas hog and romp on it and get crap mileage. And i like it. Adaptive cruise would be nice just for the dopes that let up on the gas approaching an overpass and lead foot it leaving the overpass (speed varies by as much as 20mph – or +/- 10 – at average speed of 65mph. The adaptive cruise systems (Benz for example) would compensate for that, keeping a minimum 150 feet distance. Couple that with the accident avoidance system, reprogram it to be a little more aggressive earlier on, and it has the potential to react well before any human could to slowing/stopping traffic. Still sucks if the guy behind is tailgating… but that’s why you should keep track of what’s behind you as well as what’s in front of you. collision avoidance and adaptive cruise are not contradictory, but rather work well together using the same input. Both use speed vs distance to slow the car… the collision avoidance part will just be more serious with the brakes.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,144.372691
|
||
https://hackaday.com/2011/07/13/building-a-solar-power-heliostat/
|
Building A Solar Power Heliostat
|
Brian Benchoff
|
[
"Solar Hacks"
] |
[
"heliostat",
"solar power",
"sun tracking"
] |
[Frits] has been working on an
solar panel heliostat
(in Dutch, check out the translated page
here
).
The heliostat uses a small PICAXE to control the motor, along with an
DS1307 real-time clock
to make sure the motors start at dawn. Instead of using optical encoders or magnetic sensors, the angle of the heliostat is measure with a pot attached to the drive shaft. [Frits] did a lot of data collection to figure out that this method is accurate to about 1 degree – just fine for something that doesn’t need to be exact.
According to [Frits] this heliostat will put out 12 to 50 percent more electricity than a fixed panel. Although the build does seem a little bulky, putting it on a house with a roof pitch of
23.5°
would greatly reduce the horizontal profile.
A video of a solar panel rotating at 15 degrees/hour isn’t that interesting, so [Frits] posted a clip of 6 mirrors slewing around fairly fast to demonstrate his system. Check it out after the break.
[youtube=http://www.youtube.com/watch?v=uOuJpzQQ9ic&w=470]
| 16
| 16
|
[
{
"comment_id": "417049",
"author": "password",
"timestamp": "2011-07-13T14:17:14",
"content": "wow accurate to about 1 degree – *me calculates * – that accurate to 4min of the earths rotation.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417052",
"author": "fartface",
"timestamp": "2011-07-13T14:37:34",
"content": "Can be done without all the complexity.http://www.youtube.com/watch?v=j_yqBdbuKpgWhy make it timed, make it actually look for and track the sun.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417065",
"author": "JS",
"timestamp": "2011-07-13T15:11:28",
"content": "@fartface – good point. why use a complex system when it can be done with simple electronics",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417066",
"author": "Devin",
"timestamp": "2011-07-13T15:12:13",
"content": "Why make it look for and track the sun when you know exactly where it will be with respect to the earth? The hard work has already been done with altitude/azumith tables freely available online.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417067",
"author": "steve",
"timestamp": "2011-07-13T15:16:33",
"content": ">Why make it timed, make it>actually look for and>track the sun.No, thats bullshit. Tracking based on time is extremely accurate as the suns position can be predicted exactly. Measuring it induces error and wastes power if clouds make it jiglle back and forth. Timed is the only way to go!The build looks nice, but I don’t understand, why those people building these never consider the outdoor environment. This wooden thingy will just rot and rust and be broken apart by the wind.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417071",
"author": "K!P",
"timestamp": "2011-07-13T15:38:26",
"content": "about the wood build: i think its a proof of concept? also: wood that is threated well can easily last 15-20 years, and is was greener to produce than some shiny aluminum extrusions.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417120",
"author": "Nefario",
"timestamp": "2011-07-13T18:36:16",
"content": "Call me stupid but wouldn’t it be more convenient if the panels weren’t mobile at all?If it was instead some sort of collector (satelite dish covered with a reflecting material) that would track the sun?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417127",
"author": "Toolboy",
"timestamp": "2011-07-13T19:01:23",
"content": "Not a heliostat, that’s what we in the biz call a one-axis tracker. A heliostat is a device used to reflect sunlight onto a target (like in Concentrated Photovoltaic applications). Heliostat sounds cooler, I’ll give you that…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417129",
"author": "fartface",
"timestamp": "2011-07-13T19:07:41",
"content": "Steve is such a professional idiot. Hi Steve!Too bad systems like what I am talking about is used in industry, and his claims are based on his lack of experience and wild ass guessing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417130",
"author": "mungewell",
"timestamp": "2011-07-13T19:07:56",
"content": "Without a doubt you can get more power by tracking the sun, however it does have it’s issues.# More complicated system, thus more to fail# More delicate system (I happen to live in a fairly windy area and was concerned that a cheap mount would break and damage an expensive panel)# The majority of the gain comes in the summer when (if off grid) it is not required.Even if you are tracking, towards dawn/dusk you may not be producing enough voltage to be able to charge. I would suggest people series up the panels to a higher voltage and use a MPPT charger (to squeeze the twilight power out) before spending on tracking mounts.BTW I have an off-grid 1.3KW system in Southern Alberta.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417314",
"author": "AussieTech",
"timestamp": "2011-07-14T03:11:32",
"content": "@fartface – think about it, clouds &c.More like 10% than 30%, and still pointless unless you have a whole field full of panels.Energy loss is proportional to the COSINE of the angle of incidence folks.@Nefario – panel manufacturers specifically warn against using reflectors or concentrators.@fartface is such a professional idiot with his wild arse guessing. Some of us really have got industrial experience and know why time tracking works better, but tracking generally only makes sense with industrial scale installations because of the COSINE factor. @Steve and @mungewell are on the money. I can vouch for the effectiveness of switch-mode Maximum Power Point Trackers in on-farm water pumping applications.Hi Fartface – your first comment marks you as a know-nothing troll.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417460",
"author": "Whatnot",
"timestamp": "2011-07-14T12:12:15",
"content": "Here we go again, acting like throwbacks, fartface linked to an actual working hack and although the clouds arguments is good since holland is pretty damn cloudy people have to push it to a fight and then start throwing the ‘troll’ remarks around.Why not also throw in the nazi remark and end the thread while we are at it?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418220",
"author": "RB",
"timestamp": "2011-07-16T01:56:42",
"content": "A simple way to use solar tracking is to use a photovoltaic switch which gets turned on/off by an arm attached to the panel which casts a shadow. The switch controls a little motor… err u know what i mean",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "507415",
"author": "sssalvi",
"timestamp": "2011-11-13T11:15:05",
"content": "Sorry .. for being a latecomer.The concept of coupling multiple panels to single drive is nice. Only thing is power( I mean total system of motor, gears ) for driving a large panel may not allow the use of simple drive shown.BTW ask any supplier for incorporating tracking and they say it is impractical. ( complicated /bulky/ difficult to maintain and so on )I think it has more to do with economics .. more efficient system means less number of solar panel sales.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6287790",
"author": "Bruce Porter",
"timestamp": "2020-10-20T16:32:10",
"content": "Old fiberglass C band satellite dishes make great Heliostats. Covered with mirror film, Target made out of aluminium scrap filled with a copper coil, 5 degree lag was required to keep from generation of steam. the collector size is 10 feet. Target depth or focus can also be changed for temperature regulation. I have less than 300.00 dollars in it so far I am using the 24v dish tracker to track the sun and trying to figure out how close to actual meridian i can come without steam generation. For a po boy project it has worked very well and the only drawback is the efficiency of this build it makes tons of hot water, enough for a family of five never a cold shower and I have 6 250 gallon totes plumbed together with spray foam insulation buried under my garage for storage however its also way too big. Could be half the size and it would be plenty im running water storage at 130 and using mixing valves for bathing. for heating i pump direct 130 degree water through a coil in the duct in front of the furnace to heat usually only with hot water. My last tank of propane has lasted 2.5 years the dual fuel heat pump rarely ever runs unless its very cold. At this point the rental of the propane tank per year is greater that the cost to fill it. Still siting at 70% so im figuring on at least 3 more years. My hot water tank has a solar pump and a cupperickel heat exchanger I salvaged out of an old commercial water cooled Ice machine.That provide domestic hot water for bathing etc.I have also piped hot water (pex) to my greenhouse to keep it warm during winter and it has never got below 40 degrees. Plants are flourishing. I just love this stuff!!! Get creative and you can make a system that will preform very well.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6353599",
"author": "Garet B Claborn",
"timestamp": "2021-06-03T06:05:14",
"content": "WeeelllllI’m gonna be ‘that guy’ and suggest that what you REALLY need is a map, a calendar and a clock.Both timers and tracking are sub-optimal.A Raspberry Pi Zero (or almost any board) can calculate the precise position of the Sun given location data from IP, GPS or address entry and the time of day. Potential for community software since IP geolocation is sufficient to auto-calibrate.If desired, a simple light sensor could be placed, having the board log angle & light levels every 5 minutes.With each daily cycle logged, automatic adjustments based on local geography and obstructions would be automatic as wellAlso if desired, one could render the timing tables for a given location (with or without sensor data) and use timers if you really wanted, or if you wanted to have only one compute board and the rest simple.buuuuut that’s me",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,144.622846
|
||
https://hackaday.com/2011/07/13/automotive-battery-voltage-monitor/
|
Automotive Battery Voltage Monitor
|
Mike Nathan
|
[
"Transportation Hacks"
] |
[
"alternator",
"battery",
"charging system",
"pic",
"voltage"
] |
[Rajendra’s] car had just about all the bells, whistles, and gauges he could dream of, but he thought
it was missing one important item
. In an age where cars are heavily reliant on intricate electrical systems, he felt that he should have some way of monitoring the car’s battery and charging system.
To keep tabs on his car’s electrical system, he built a simple device that allows him to monitor the battery’s instantaneous voltage when the car is powered off, as well as the charging voltage across the battery when the car is running. A PIC16F1827 runs the show, using a simple voltage divider network to step the input voltage down to an acceptable level for use with the PIC’s A/D conversion channel. The resultant measurements are output to a four digit 7 segment display, mounted on the front of the device.
He says that the voltage monitor works quite well, and we’re sure he feels a lot better about the health of his car’s charging system. For anyone interested in keeping closer tabs on their car, he has a circuit diagram as well as code available on his site.
| 32
| 32
|
[
{
"comment_id": "417022",
"author": "Bobby J",
"timestamp": "2011-07-13T13:17:27",
"content": "Or you could buy a ScanGuage and read it directly from the ODB port as well as a bunch of other information…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417026",
"author": "Jobby B",
"timestamp": "2011-07-13T13:26:33",
"content": "So wait.I can buy a $100+ device that does more than I need, or I can scrounge parts/pay about $20 to build this?Riight. Let me get right on that scangauge.Money must grow on trees in your neck of the woods, partner.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417028",
"author": "Nick",
"timestamp": "2011-07-13T13:31:24",
"content": "Or he can have the pleasure of doing it himself, and it’s nice to have a build like this, i don’t know…maybe for people who’s car does not have an ODB port like mine. Not to mention, im sure his is a helluva lot cheaper then a scanguage",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417029",
"author": "Tom",
"timestamp": "2011-07-13T13:33:05",
"content": "but that doesn’t take any brains…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417031",
"author": "Tom",
"timestamp": "2011-07-13T13:34:15",
"content": "my comment was directed @ Bobby J, oops!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417035",
"author": "fartface",
"timestamp": "2011-07-13T13:42:13",
"content": "http://www.flickr.com/photos/jonathancharles/2608325845/Better easier and looks far less nerdy in the car. mount one LED right in the instrument cluster for a “OEM” look. plus you can modify the color changes for specific voltage readings.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417036",
"author": "damox",
"timestamp": "2011-07-13T13:44:17",
"content": "I hope nobody tries to use the modified USB adapter he uses to charge their phone!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417037",
"author": "Ivan",
"timestamp": "2011-07-13T13:48:36",
"content": "Wouldn’t be great to monitor current instead of voltage? :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417041",
"author": "Nick",
"timestamp": "2011-07-13T14:01:11",
"content": "@IvanThat would be the icing on the cake if it could even be added to this ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417042",
"author": "Chad B",
"timestamp": "2011-07-13T14:04:08",
"content": "Now he just needs it to spit out logs for when its time to get that battery replaced under warranty :-P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417043",
"author": "Chris",
"timestamp": "2011-07-13T14:05:04",
"content": "I’m fairly certain the BMW pictured in this article is already monitoring the battery voltage 5 times over and would happily report this to you if it was out of spec.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417044",
"author": "Sebastian Heyn",
"timestamp": "2011-07-13T14:05:11",
"content": "I doubt that its automotive. I bet it would fail radiation tests!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417045",
"author": "Ivan",
"timestamp": "2011-07-13T14:05:18",
"content": "@Nick, yes. But not easy from the DC outlet inside the car. That probably would require direct access to the battery and may be messy. But both voltage/current (power) would be great to monitor actual load of the electrical system of the car, and of course it would help to early detect failures in the alternator and perhaps the battery itself.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417047",
"author": "Nick",
"timestamp": "2011-07-13T14:09:59",
"content": "@IvanEactly, I wouldn’t mind having for it to go to the battery, heck, my car still has an ammeter, however no longer functional, I think somewhere in the harness is screwed up :/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417060",
"author": "Scott",
"timestamp": "2011-07-13T14:54:05",
"content": "The big application for this is battery voltage in other vehicles and installations. Sailboat owners obsess about their storage batteries since charging can be troublesome (running the engine or using solar cells/wind generator) and off-the-grid sorts use these all the time.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417076",
"author": "Ivan",
"timestamp": "2011-07-13T15:44:45",
"content": "Why not just a panel meter and a passive low pass filter for surges? It even matches the rest of the gauges *FACEPALM*",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417081",
"author": "Ivan",
"timestamp": "2011-07-13T15:45:55",
"content": "There are 1999 count voltmeters with LED display interface out there.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417082",
"author": "Ivan",
"timestamp": "2011-07-13T15:49:28",
"content": "“Wouldn’t be great to monitor current instead of voltage? :)”That wasn’t me, by the way.Measuring current is a lot harder, you have to break the circuit and there are huge spikes. Measuring DC current is a hassle. You can’t fit a reasonably accurate current shunt and 99% of the time you are not using 60 amps like the range on your display.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417092",
"author": "Anonymous",
"timestamp": "2011-07-13T17:14:50",
"content": "Huh, I’d like something that logs the battery level to an SD card or something, even when off though… I might have to get on that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417104",
"author": "Bobby J",
"timestamp": "2011-07-13T17:46:21",
"content": "Fine, don’t want a $100 scanguage, here’s a $20 voltage meter:http://www.amazon.com/Equus-3721-Battery-Charging-Monitor/dp/B000EVWDU0/ref=dp_cp_ob_auto_title_0",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417115",
"author": "Buddy",
"timestamp": "2011-07-13T18:13:10",
"content": "@Ivan – There are non-intrusive current detectors that wrap around the cables. Apparently, they’re reasonably accurate.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417167",
"author": "password",
"timestamp": "2011-07-13T20:02:34",
"content": "@buddy do they work for dc current?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417173",
"author": "George",
"timestamp": "2011-07-13T20:11:37",
"content": "This little diddty will get you started on your Hi current gauge.http://www.sparkfun.com/products/10644",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417182",
"author": "eyesaid",
"timestamp": "2011-07-13T20:34:29",
"content": "I totally understand the satisfaction of the build but sometimes you need to keep thing in perspective.This is one I purchased on Ebay and it works great.http://cgi.ebay.com/7-5V-20V-Blue-LCD-Digital-Voltmeter-Volt-Panel-Meter-/280709214594?pt=LH_DefaultDomain_0&hash=item415b92b182",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417249",
"author": "Soundwavehi",
"timestamp": "2011-07-13T23:28:15",
"content": "It would be better to know the amperage of the battery… I’ve started cars with 10v but the amperage is what cranks the starter. That’s why you have to pay attention to the cold cranking amperage when buying a battery, like for larger trucks, and cars that have superchargers/turbos.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417250",
"author": "Soundwavehi",
"timestamp": "2011-07-13T23:28:49",
"content": "Props on the build though…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417271",
"author": "wernicke",
"timestamp": "2011-07-14T00:19:54",
"content": "@ChrisBMW makes the Equinox now?I’ve got a voltmeter on my GMC Acadia (nearly the same gearshift handle as in the picture, btw), but I suspect it isn’t much more than a 3 position Hi/OK/Lo indicator. Many current analog gauges don’t read linearly, but are setup to give easy-to-read feedback at the expense of accuracy.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417320",
"author": "john",
"timestamp": "2011-07-14T03:40:16",
"content": "good stuffi wonder how it would need to be changed to work in my mgb, which is positive earth and has two 6 volt batteries",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417330",
"author": "Alexander",
"timestamp": "2011-07-14T04:26:45",
"content": "Wouldnt a simple multimeter do exactly what he’s doing?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417492",
"author": "Buddy",
"timestamp": "2011-07-14T13:33:33",
"content": "@password – yeppers, but expensivee.g. http preview.tinyurl.com/6l9pu3bPersonally, I would buy a set of generic battery cables (keep the originals intact!), and chop up those.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417855",
"author": "cutandpaste",
"timestamp": "2011-07-15T05:55:39",
"content": "My 1995 E36 BMW does battery monitoring right on the dashboard: Just press 1 and 1000 at the same time, dial in “9,” and press Set.Bingo! A digital voltmeter on the dash.(There’s a lot of other “hidden” features on the on-board computer, too, but that’s one of the most useful ones for me.)I haven’t looked, but I would be genuinely alarmed if newer BMWs weren’t similarly-equipped. They started doing this at least 20 years ago. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "428653",
"author": "fazli",
"timestamp": "2011-08-04T20:28:34",
"content": "please give the automotive voltage monitor ic s micro c programme …",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,144.528196
|
||
https://hackaday.com/2011/07/13/faux-led-scroller-using-phosphorescence/
|
Faux LED Scroller Using Phosphorescence
|
Mike Nathan
|
[
"LED Hacks"
] |
[
"led",
"phosphorescent",
"pic",
"scroller"
] |
Hackaday reader [BGR] wrote in to share
a video he put together
showing off a cool “poor man’s LED scroller” that he built. Rather than build a huge array of LEDs, spending tons of time time wiring and programming, he decided to use only a handful of LEDs on a moving display instead.
The scroller is built upon a PIC16F887 microcontroller which resides on an EasyPIC6 dev board he borrowed for the project. The PIC controls a strip of eight bright white LEDs, which are used to write text on a long strip of phosphorescent paper that can be found at many printing supply outfits. The paper’s dispensing mechanism was cobbled together with parts from several sources, including a laser printer and VCR.
When he wants to display a message, he inputs text into a flash application he wrote. The app sends the LED byte values to his scroller via a separate serial proxy that talks to the pic over his computer’s COM port.
The effect is pretty slick, looking similar to a slow-moving diffused LED scroller. The messages disappear after about 5 minutes in a pitch black room, which is perfect, since he originally intended to use the device for displaying Twitter updates. He is already considering a second revision of the project, which he wants to mount on the wall – sounds great to us!
Be sure to swing by YouTube to see the video, or continue reading to watch it here.
[youtube=http://www.youtube.com/watch?v=9X_q6Db53jQ&w=470]
| 38
| 37
|
[
{
"comment_id": "416979",
"author": "zuul",
"timestamp": "2011-07-13T11:23:26",
"content": "haha, actually a pretty good ideadies out about the time it comes around again too",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416982",
"author": "Pup",
"timestamp": "2011-07-13T11:28:23",
"content": "This is quite cool.This could be a more efficient alternative to the receipt printer hacks we’ve seen lately, too. Imagine the same thing on a phosphorescent paper loop. :DAlso Im rather interested to know whether you could ‘write’ using lower levels of light and in higher resolutions.Does phosphorescent paper react only to visible light or could you use IR LEDS to excite the phosphor?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "451950",
"author": "Andrew",
"timestamp": "2011-09-10T05:15:06",
"content": "UV leds would work the best.",
"parent_id": "416982",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "416983",
"author": "Karl",
"timestamp": "2011-07-13T11:32:14",
"content": "I love it – it reminds me of when I threw together a driver for a dot matrix printer mechanism many years ago …",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416985",
"author": "Pup",
"timestamp": "2011-07-13T11:32:30",
"content": "Just to clarify this bit:“Also Im rather interested to know whether you could ‘write’ using lower levels of light and in higher resolutions.”I meant lower levels of light in the sense that you could draw greyscale text/images to the phosphor.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416987",
"author": "transistorman",
"timestamp": "2011-07-13T11:35:21",
"content": "you can use IR led’s to ‘undo’ the effects of the phosphorescent paint. (UV led to write an effect, IR led to undo)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416992",
"author": "gcat122",
"timestamp": "2011-07-13T11:56:04",
"content": "Sensitivity is highest to UV and least to red and IR.Yes,you can do “greenscale” with shorter or dimmer exposure.Cool project.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416994",
"author": "Beck",
"timestamp": "2011-07-13T12:02:24",
"content": "nice idea. I want one :DPhosphorescent materials react best to short wavelenghts like blue or UV. UV Leds are even less visible for the human eye.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416996",
"author": "fartface",
"timestamp": "2011-07-13T12:08:08",
"content": "if he made a grid to block light around each pixel he certianly could scale up the resolution. using super bright as heck UV led’s you could then do insane intensity bursts that allows the strip to run faster for eve more fun!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416997",
"author": "Tony",
"timestamp": "2011-07-13T12:10:58",
"content": "Good. That´s good idea. Is possible to grab images? I think, by control of dimmer exposure?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417000",
"author": "Alan Yates",
"timestamp": "2011-07-13T12:18:01",
"content": "I’ve been looking for the phosphor paper to do exactly this, but for a slightly different purpose. Can someone give me a source for relatively large pieces like this please?Also it would be ideal if the paper was zinc sulfide based, not strontium aluminate. Zinc sulfide can be erased easily with IR light to quench the phosphorescence… I actually built a little testing source I carry with me, one UV LED one IR one to test phosphors I find in the hope of stumbling on exactly what I need.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417002",
"author": "ENKI-][",
"timestamp": "2011-07-13T12:22:57",
"content": "This is lovely, though tangentially I find it frightening that flash can (apparently) talk to serial ports…What frequencies does this phosphorescent paper respond to? Can you use it in daylight with a tinted glass cover?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417003",
"author": "APerson",
"timestamp": "2011-07-13T12:24:25",
"content": "it might also be possible to use a conventional LCD display if it can be made opaque enough to control exposure. the LEDs could just be left on and the LCD could be manipulated by the micro.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417004",
"author": "a.d",
"timestamp": "2011-07-13T12:26:43",
"content": "ENKI-][ – I think the flash requires a proxy server to be able to talk to the serial ports – something like TinkerProxy.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417005",
"author": "sariel",
"timestamp": "2011-07-13T12:34:13",
"content": "@PUP mfw i read your comment.http://img2.moonbuggy.org/imgstore/you-just-blew-my-mind.jpgi’d love to see that idea in action with this setup. i also love the soft glow of letters. reminds me of the old Apple][ displays of yore. Good job BGR",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417006",
"author": "bothersaidpooh",
"timestamp": "2011-07-13T12:34:40",
"content": "This also works with the SMD 395nm UV 0603 LED’s available on ebay and elsewhere.These can be soldered onto a fragment of pcb saved from a broken PCMCIA edge connector PCB if you can’t be bothered to make a board :-)I did have a thought, drill a grid of 0.2mm holes, mount the SMD LEDs at a 45 degree angle inside a double layer board, solder them in place with a solder ball at each end then you have a very compact assemmbly capable of mounting on a suitable carrier unit.If anyone makes some use of this idea, paypal the cost of a beer to the usual address :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417008",
"author": "bothersaidpooh",
"timestamp": "2011-07-13T12:41:29",
"content": "@Alan Yates You could always have a look at the DIY stores, sometimes you can get glowing paint there.Or you could make some yourself, see Jeri’s work on DIY EL phosphors using zinc acetate and thiourea.The secret to long persistence is to mix in a bit of copper and chlorine dopant in the form of Losalt… or use silver paint saved from old defunct PC keyboards to make ZnS:Ag “expensive” alpha scintillator that normally costs around £19 for 500mg.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417012",
"author": "anomdebus",
"timestamp": "2011-07-13T12:53:40",
"content": "This is awesome..I have wanted to build a external closed captioning device, but the number of LEDs needed to provide the information at the same pace as the dialog is ridiculous.This wouldn’t quite work for that application as it is a little too persistent.What Alan was talking about could work though, since you could erase the old dialog.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417020",
"author": "password",
"timestamp": "2011-07-13T13:14:25",
"content": "just use a reaaalllyyy long piece phosphorescent paper and make zigzag a few times as to give it enough time to fade away.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417030",
"author": "bgr",
"timestamp": "2011-07-13T13:33:28",
"content": "Hey all, bgr here, thanks for the comments!Regarding the resolution capability of the paper – it’s pretty decent, you could write text that is as small as ~1cm (0.5inch) in height. You could make monochrome pictures with it, if you put it against a computer or phone display it transfers the picture but it’s a little blurred, and it’s actuated only by the blue component, red and green do absolutely nothing (I used white leds but blue ones would perform exactly the same, and UV ones even better).I was originally planning to mix up the phosphorescent powder and apply it onto fabric or paper, but when I went to buy it I found they also sell this ready “paper” by meter that was perfect for this because it’s crap and fades after 2 minutes (it’s actually more like a 1mm thick plastic-rubber than paper, with adhesive back side, and it stretches a little so that gave me some problems with the belt).I originally planned to have a long zig-zag belt, but this thing is expensive! One square meter is around $70. But it turns out it fades very quickly in the first few seconds, so by the time the belt makes one revolution it’s already faded enough for new text to overwrite it and be perfectly clear.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417053",
"author": "Scott_T",
"timestamp": "2011-07-13T14:42:14",
"content": "in the back of my brain I recall something like this done with a disc instead of a paper loop.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417061",
"author": "Tweeks",
"timestamp": "2011-07-13T14:54:20",
"content": "Nice work man..Can you get a higher contrast and sharper characters by placing “blinders” between the LEDs?Where do you source the phosphorescent paper from?Tweeks",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417070",
"author": "m9dfukc",
"timestamp": "2011-07-13T15:27:37",
"content": "Random International used this technic in there temporary printing machine series ….http://www.random-international.com/temporary-printing-machine-christopher-henry-gallery-2/http://www.random-international.com/self-portrait/cheersm9d",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417086",
"author": "M4CGYV3R",
"timestamp": "2011-07-13T16:16:30",
"content": "Just to get my bearing on this project, he’s using Flash to talk to something Java to talk to something ASM/C over the serial port?Couldn’t you just, you know, do it all in C and save a lot of trouble? A single serial writer app with a nice GUI?I really need to see more info on this project to know what’s going on.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417090",
"author": "hboy",
"timestamp": "2011-07-13T16:41:15",
"content": "now use staggered 0805 LEDs with masks and get beyond 150DPI :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417110",
"author": "YS",
"timestamp": "2011-07-13T17:59:41",
"content": "Wow! That’s really cool! Probably I’ll try to build something like this. If I’ll be able to get a fluorescent paper… Never seen one at local stores…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417169",
"author": "bothersaidpooh",
"timestamp": "2011-07-13T20:05:53",
"content": "Update:- had a look here and no sign of glow in the dark paper.Looks like I’ll have to order some, ideally it needs to be glowing acetate (perhaps I can do some chemistry voodoo and make my own!) so it works for the intended application which is a hack to a broken scrolling fish tank which mounts on the wall.So far so good, I have determined that for half decent resolution 100 0603 or 0805 LEDs will be needed.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417171",
"author": "bothersaidpooh",
"timestamp": "2011-07-13T20:08:09",
"content": "Rip the light guide out of a broken HP all-in one printer which has been dismantled to use the CCD as a linear radiation sensor, and mount this onto the LED array. Simplez. :-)#include “Macgyver.h”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417205",
"author": "Cyberteque",
"timestamp": "2011-07-13T21:33:04",
"content": "This is cool!Another place to get film like this is sign shops, you can get rolls A3 width and 20 metres long.I’ve tried this on a drum mounted up in an Epson printer, with 1 LED where the print head was.Origionaly it was to check ATP satelite images from NOAA and Meteor satelites.WE found if you put negatives or slides on phosphoresent film, then “hit” it with a flash gun, it transfers a very sharp image.Then we tried everything we could lay our hands on!Keys, leaves, my girlfriends boobs!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417233",
"author": "Mark",
"timestamp": "2011-07-13T22:42:32",
"content": "Interesting materials here including a nice phosphor tape:http://www.inventables.com/categories/raw-materials/glow-in-the-darkalso for brighter than ZnS phosphors (rare earth element based) try United Nuclear here:http://unitednuclear.com/index.php?main_page=index&cPath=28_45",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417274",
"author": "bgr",
"timestamp": "2011-07-14T00:25:27",
"content": "@Tweeks: yes you could get a sharper characters, but not really crisp, at least with this material that I have, because this one has thickness and light scatters on the inside so there’s a blurry edge that’s around 2mm wide no matter how sharp your light source is.@M4CGYV3R: Flash app connects to a socket that’s being listened by a serial proxy utility that relays data from socket to COM port, so it’s really simple actually. No Java/ASM/C on the client side.@YS, @bothersaidpooh: you’ll probably have to order, I was pretty damn lucky they had this, I entered the shop planning to buy powder to mix with something (I didn’t have a clue what but I knew it had to be something that doesn’t block UV). When you find it don’t be surprised if the price is around $80 per square meter, it’s expensive.@transistorman, @Alan Yates: thanks for the IR erasing tip, I didn’t know that. I just tried it an it works :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417366",
"author": "bothersaidpooh",
"timestamp": "2011-07-14T06:36:52",
"content": "Yeah, this was in “New Scientist” way back when.In fact it is a demonstration of quantum mechanics, because the phosphor behaves nonclasically.It works because the luminous centre stores energy by the outer electron being knocked into a high orbital. As it decays back to the ground state it emits a characteristic photon of light, giving (in this case) green for ZnS:CuBecause this excited state is affected by radiation, infrared of the correct wavelength can act like a sound wave on a tuning fork and make it “vibrate” more. This causes the electron to get perturbed and knocked out of its excited state and decay far sooner than normal, so you can see a “green flash” as it decays.This same effect is analogous to radioactive decay, in fact the typical decay graph resembles the half life graph of a radioisotope.(Warning:- this is the “nice” explanation. For the full text go to physorg, beware, hairy math alert!!)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417382",
"author": "spiralbrain",
"timestamp": "2011-07-14T07:13:35",
"content": "Very cool!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417407",
"author": "Pup",
"timestamp": "2011-07-14T08:15:08",
"content": "@bothersaidpoohIf that’s the case, does the use of infrared reduce the lifespan of the phosphor, or would it have the same effect as if it were left to decay naturally?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417928",
"author": "bothersaidpooh",
"timestamp": "2011-07-15T10:35:42",
"content": "@Pup, no it doesen’t affect the phosphor.I did try this, the glow seems as strong as before even though I nuked it with a NIR laser from close range and no effect at all. No brightness change whatsoever once it has recharged evenly.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417931",
"author": "Pup",
"timestamp": "2011-07-15T11:02:42",
"content": "@bothersaidpooh I’m not talking immediate effect, I mean over a number of charge/discharge cycles.I assume that this type of phosphor still suffers from burn-in after a while, or is that not the case?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417934",
"author": "Pup",
"timestamp": "2011-07-15T11:06:35",
"content": "Incidentally, guys.http://www.amazon.co.uk/Thumbs-Up-Glow-Dark-Toilet/dp/B002VKDO1E/ref=sr_1_1?ie=UTF8&qid=1310727860&sr=8-1Probably not the best source of phosphorescent paper, but it’s relatively cheap and plentiful.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418654",
"author": "lou_cyfer",
"timestamp": "2011-07-17T12:55:47",
"content": "very nice setup :) thanks!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,144.750402
|
||
https://hackaday.com/2011/07/12/xbox-360-dvd-changer-is-the-ultimate-in-gaming-laziness/
|
Xbox 360 DVD Changer Is The Ultimate In Gaming Laziness
|
Mike Nathan
|
[
"Xbox Hacks"
] |
[
"ben heck",
"cd changer",
"gaming",
"xbox"
] |
Let’s face it – gamers have a reputation for being pretty lazy.
In the most recent episode of his web series
, [Ben Heck] takes on the stereotypical gamer role and cranks the laziness factor to 11, lamenting the fact that he needs to get up off the couch to swap discs in his Xbox 360 console. Never allowing laziness get in the way of his hacking, he springs into action, hauling off to his shop in order to construct an Xbox DVD changer system.
He grabbed a pair of CD changers and popped them open to see how they operated. After choosing the best candidate based on its CD loading method, he got to work disassembling the changer. The old CD player and its guts were removed, which he replaced with DVD drive components ripped from his Xbox. Quite a bit of trimming and tweaking was required to swap out the components, but it seems that [Ben] got things working just fine.
With the mechanical portion of the project out of the way, he dug into the electronics. The CD changer had no way of knowing how to interface with the Xbox and vice versa, so [Ben] had to devise a way for the two devices to communicate. He used an Arduino Uno to control the systems, triggering the CD carousel only when the Xbox thought it had its drive slot opened.
While the system looks a bit unpolished, and the controller quite bulky, we love this thing! No matter if you are lazy or not, jamming these two devices together is exactly what hacking is all about.
| 33
| 33
|
[
{
"comment_id": "416749",
"author": "Chris",
"timestamp": "2011-07-12T22:07:17",
"content": "JTAG, Freeboot and a Large HDD…. Just saying.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416750",
"author": "Will",
"timestamp": "2011-07-12T22:09:33",
"content": "Yeah, benHeck is pretty good at trimming things down. :P You kind of need that making portables, like his 360 and PS3 laptops. Make this in one of those!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416770",
"author": "Nick",
"timestamp": "2011-07-12T22:26:54",
"content": "Some interesting info in the build, however I’m left a little disappointed that he didn’t create some sort of interface to tell what discs you are changing to.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416774",
"author": "steve",
"timestamp": "2011-07-12T22:43:54",
"content": "Yes. He definitely earned it…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416779",
"author": "Hackerspacer",
"timestamp": "2011-07-12T22:50:19",
"content": "LOL @ JTAG, Freeboot and a Large HDD…. Just saying.Much better solution.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416784",
"author": "Anonymous Coward",
"timestamp": "2011-07-12T23:04:24",
"content": "This would never be an issue if the crappy Xbox would let you play games off the HDD without requiring the original media in the drive. Last I checked JTAG only worked with certain FW version.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416787",
"author": "fritoeata",
"timestamp": "2011-07-12T23:13:25",
"content": "That is awesome!I don’t think Benheck would risk tarnishing his good name in “grey hat” affairs…(not black hat, but arguably white hat)…And besides, he can always say his xbox is bigger ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416789",
"author": "ehrichweiss",
"timestamp": "2011-07-12T23:18:59",
"content": "I considered doing almost the exact same thing except as a DVD-rom changer because, at the time, the best thing available was a Powerfile DVDrom changer, except nobody wanted under $1,000 each for them. Then as time went on, larger hard drives became available and it made more sense to simply copy my DVDroms to disk.I’d still consider this build if it were a bit less involved…which isn’t Ben’s fault by any means.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416812",
"author": "Addidis",
"timestamp": "2011-07-13T01:04:39",
"content": "This is by far, the coolest mod Ive ever seen.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416813",
"author": "funkypunk",
"timestamp": "2011-07-13T01:05:45",
"content": "laziness is the mother of invention",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416817",
"author": "sanchezsucio",
"timestamp": "2011-07-13T01:11:07",
"content": "Chris, great idea!Oh wait, you can’t JTAG a new “S” console which is what he used.Oh and the vast majority of consoles in the wild are not JTAG-able any more either, unless you find a lucky RROD box that has sat for ages.And um, oh…you can’t safely take a JTAG online.Sweet idea!I will take the carousel changer any day.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416829",
"author": "KP",
"timestamp": "2011-07-13T01:46:06",
"content": "It’s neat and all… but if this was to solve the problem of getting off the couch a 50 foot hdmi cable (15$) would have been a better option. You can’t see what disc you’re on and it’s huge and ugly….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416830",
"author": "Bluedodo",
"timestamp": "2011-07-13T01:46:14",
"content": "Another option would be to use one of those CD changing robots like thishttp://www.cd-robotics.com/products/cd-copy-robot-EL1.php?m=1I only thought of it because I saw some for cheap in an action for a business in recivership. But that wouldn’t be a cool as hacking a disc changer.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416836",
"author": "Mark",
"timestamp": "2011-07-13T02:15:05",
"content": "Great stuff and an actually decent show. I remember seeing the xbox 360 laptop on here for the first time. I plan on keeping up with new episodes, keep hacking Ben!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416880",
"author": "joe",
"timestamp": "2011-07-13T04:18:43",
"content": "It is a cool mod, but he did all that work just because he’s too lazy to walk from his couch to the console? Seems like his thinking is a bit ass backwards.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416934",
"author": "foogoid",
"timestamp": "2011-07-13T08:19:09",
"content": "Nice project! I’m sure there’s enough room left for the rest of the Xbox guts, though. Next step, make the IR remote control change the discs.They actually made CD-Rom drive with disc changers:http://www.dansdata.com/changer.htmI’ve got a 4-disc sitting around somewhere.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416935",
"author": "password",
"timestamp": "2011-07-13T08:21:18",
"content": "a long time ago i saw a +- 600 disk changer for a mp3 player someone build , used 6 racks and each rack used 10 piles of 10 disks, would be nice for home entertainment if you buy a crapload of disks",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416949",
"author": "PS3Fanboy",
"timestamp": "2011-07-13T09:01:37",
"content": "I take my hat off for the mechanical part of the hack. Replacing an old CD player with a DVD one (and make it fit and work!).After that they cut too much in the show I think. Was hoping to see more from the arduino.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416967",
"author": "Anand Singh",
"timestamp": "2011-07-13T10:37:52",
"content": "I considered doing almost the exact same thing except as a DVD-rom changer because, at the time, the best thing available was a Powerfile DVDrom changer, except nobody wanted under $1,000 each for them. Then as time went on, larger hard drives became available and it made more sense to simply copy my DVDroms to disk.great work dude",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416971",
"author": "Eirinn",
"timestamp": "2011-07-13T11:07:37",
"content": "@sanchezsucio Lol why so mad?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416998",
"author": "smoker_dave",
"timestamp": "2011-07-13T12:12:33",
"content": "I wonder how many manual disc changes could have been made using the energy it took him to make the hack.Not sure “energy” is the correct unit to measure with though. We need some new kind of unit for “laziness”. Maybe called the “CBA”?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417013",
"author": "blue carbuncle",
"timestamp": "2011-07-13T12:54:48",
"content": "Ben Heck constantly making us all look like clown shoes with his unique style and easy to understand instructions :) Go Ben! Keep up the great work!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417025",
"author": "that1guy",
"timestamp": "2011-07-13T13:24:40",
"content": "@joeBen Heck does a lot of his projects with a tongue-in-cheek attitude. He doesn’t REALLY need a disc changer for his xbox, it’s just a fun project that he could use on his podcast. Don’t be a debbie downer.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417027",
"author": "sanchezsucio",
"timestamp": "2011-07-13T13:31:17",
"content": "@EirinnNot mad, just pointing out how ridiculous Chris’ suggestion was. It’s not like you can just run out to the store and get a JTAG-able Xbox 360. You can easily run across a CD changer like this at a weekend garage sale, however.I love my JTAG Xbox, but they are relatively rare and not really applicable when your goal is to create a new and interesting hack. If Ben just ran out and hacked an Xbox, no one would care – it has been done hundreds of times and is dead simple if you have the right equipment. This hack requires far more creativity and work.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417033",
"author": "Eirinn",
"timestamp": "2011-07-13T13:41:22",
"content": "@sanchezsucio my question was about your attitude, no whether you are right or wrong lol :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417098",
"author": "tooth",
"timestamp": "2011-07-13T17:35:25",
"content": "i dont think i Even have enough games to fill that thing lol, also i think the wife would not like that siting in our tv stand……(thinking ABOUT A GEEK/NERD CAVE OF WONDER)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417124",
"author": "Chris",
"timestamp": "2011-07-13T18:49:42",
"content": "I was only playing about jeesh, internets….. Benjamin J Heckendorn is brilliant and I always watch his show, hats off to the guy, black, grey or white it doesn’t matter, I salute you sir.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417125",
"author": "Xeniczone",
"timestamp": "2011-07-13T18:55:19",
"content": "I did this like 2-3 years ago with a Playstation 2 and a 5 disc changer. Search YouTube for “Playstation 2 CD Changer.” Though he beat me to using a modern console and using a larger disc set. I had purchased a 300disc changer to make a 300 Disc PS3, but never got around to it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417164",
"author": "Nardella",
"timestamp": "2011-07-13T19:45:48",
"content": "His comment regarding opening the Xbox without damaging the casing was very amusing, as was the rest of the video.Good work!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417186",
"author": "Jamen",
"timestamp": "2011-07-13T20:46:42",
"content": "I’m kind of disappointed that he didn’t use the IR for the disc changer.I just bought a 360 for 15 dollars at a garage sale… but the disc drive won’t read discs. :(",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417191",
"author": "XboxGreyHat",
"timestamp": "2011-07-13T20:55:10",
"content": "Jamen,A bad drive is no problem if you have the proper tools. You can always try adjusting the laser pot or cleaning the laser itself. If that fails, it is quite simple to dump the firmware (and DVD key) from your drive and then write it back to a replacement DVD drive. Once you determine what make and model drive you have, you can order a clean replacement online – writing the firmware from your stock drive to this drive makes them identical as far as MS is concerned, and you can go about your business as a law abiding xbox owner. There is nothing wrong with replacing your own hardware as long as you don’t load a firmware that enables you to play copied games.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417341",
"author": "DeAuthThis/Corrosion",
"timestamp": "2011-07-14T05:12:22",
"content": "Just fucking stupid in this one… no need for the arduino… don’t pawn off the shit because you get commission!I own the SAME model sony cd player, you could have named each disc and hooked up a keyboard to it, use the existing IR remote to control which disc you want, etc…You really half ass’d this mod Ben.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "2918208",
"author": "Mr. Bill",
"timestamp": "2016-02-13T18:51:54",
"content": "Link doesn’t work any more, try this one:https://www.youtube.com/watch?v=Djf4qrwvQRw",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,144.817843
|
||
https://hackaday.com/2011/07/12/shoulder-surfing-with-opencv/
|
Shoulder Surfing With OpenCV
|
Mike Nathan
|
[
"iphone hacks",
"Security Hacks"
] |
[
"ipad",
"iphone",
"opencv",
"security",
"shoulder surfing"
] |
While it seems that many people are wise to shoulder surfing, keeping a lookout for anyone spying on their passwords, [Haroon] wrote in to remind us that
the threat is just as real today as it ever was
.
The subjects of his research are touch screen phones and tablets, which utilize on-screen keyboards for data entry. He says that while nearly all password entry boxes on these devices are obscured with the traditional line of asterisks, the keyboards themselves are quite an interesting vulnerability.
Since touch screen technology can be finicky at times, most vendors ship their devices with some sort of key press verification system. On the iPhone and iPad, for instance, each key is highlighted in blue following a button press. This functionality makes it quite easy for shoulder surfers to casually steal your password if you’re not paying attention.
But what if you are well aware of your surroundings? [Haroon] has developed a piece of software he calls shoulderPad, which is based on openCV that does the surfing for him. The application can monitor a video stream, live or recorded, extracting the user’s password from the highlighted button presses. His demonstrations show the recording taking place at a relatively close distance, but he says that it would be quite easy to use surveillance footage or zoom lenses to capture key presses from afar.
He does say that the button highlighting can be easily disabled in the iPhone’s options pane, which should negate this sort of attack for the most part.
Continue reading to see a quick video of shoulderPad in action.
[youtube=http://www.youtube.com/watch?v=RGS4q-WHTlg&w=470]
| 14
| 13
|
[
{
"comment_id": "416726",
"author": "Steve",
"timestamp": "2011-07-12T21:18:17",
"content": "Erm, how do you disable keyboard highlighting in iOS?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416736",
"author": "AJ",
"timestamp": "2011-07-12T21:29:55",
"content": "Heck, how do you *enable* it? It’s certainly not turned on for my iphone running ios 4.3.3",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416747",
"author": "Taylor Alexander",
"timestamp": "2011-07-12T22:01:24",
"content": "It would be nice if it was disabled only for password fields. Since disabling it globally is unnecessary and possibly annoying.Or maybe it does that?And then there is the fact that phones and tablets show each character you type in the text box momentarily before obscuring it. You could scan that for passwords too in a video stream of sufficient resolution (but obviously the keyboard reading is easier to see).-Taylor",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416780",
"author": "RooTer",
"timestamp": "2011-07-12T22:52:46",
"content": "Why there is no google+ button here;)?as for this “hack” – great job, and certainly is not only applicable to blue hilighting keyboards – just that simple color change made it easier to do.If we can see the password box, the finger position and when letters appear, we can take finger postion and assume that button under it was pressed at the time. Well, now you can troll your acquaintances saying that Android is more secure because there is so much disparity in keyboard apps and display sizes;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416797",
"author": "Josh",
"timestamp": "2011-07-12T23:51:30",
"content": "That is not the stock iOS keyboard in the picture. iOS does not highlight key presses in blue. It also is not black.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "417544",
"author": "haroon",
"timestamp": "2011-07-14T16:45:03",
"content": "Hi Josh.It is indeed the stock keyboard, but with “complex passwords” enabled.The white keyboard shows up for regular typing, and this one shows up for password prompts.",
"parent_id": "416797",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "416824",
"author": "Anonymous",
"timestamp": "2011-07-13T01:34:00",
"content": "Maybe in the future password fields on touch screen devices will have their on-screen keyboard’s keys randomized?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416843",
"author": "wiggles",
"timestamp": "2011-07-13T02:33:36",
"content": "I use a morse code keyboard on my android phone, that ought to stop ’em.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416925",
"author": "Mad Max",
"timestamp": "2011-07-13T08:03:21",
"content": "I think you could steal anybody’s password from any keyboard (SW or HW) if you get to film them as they do it (and you know the layout of the keyboard, or can discern it in the footage). I really see no protection against that, unless we really start typing in passwords in Morse code…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416948",
"author": "Otacon2k",
"timestamp": "2011-07-13T09:01:10",
"content": "Because computers can’t decipher morsecode?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417001",
"author": "ZeroCool42",
"timestamp": "2011-07-13T12:18:39",
"content": "@Anonymous: I’m with you on this one. A randomised keyboard layout for password fields (different each time) would not only negate shoulder surfing, but also prevent build up of fingerprints in certain positions on the screen, which, while it may not be such a big deal for occasionally used online passwords, definitely is an issue for some unlock codes.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417109",
"author": "Isotope",
"timestamp": "2011-07-13T17:56:13",
"content": "there’s a morse code android app that replaces the standard keypad. i was able to get pretty fast sending messages with it, and i just learned the code not long ago",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417231",
"author": "skipthis_",
"timestamp": "2011-07-13T22:28:51",
"content": "Interesting post!There is also the iPhone version of this attack, which can also steal passwords and long texts while the victims move naturally during typing.http://slashdot.org/submission/1716844/Fast-Automatic-iPhone-Shoulder-Surfing",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417471",
"author": "skipthis_",
"timestamp": "2011-07-14T12:33:21",
"content": "Here is the video of the iPhone version of the attackhttp://www.youtube.com/playlist?list=PL81F91E404B928833",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,144.676683
|
||
https://hackaday.com/2011/07/12/character-lcd-screen-add-on-for-android-devices/
|
Character LCD Screen Add-on For Android Devices
|
Mike Szczys
|
[
"Android Hacks"
] |
[
"accessory",
"adk",
"android",
"arduino",
"atmega2650",
"usb"
] |
Here’s an
Android accessory project that adds a secondary LCD
display. It utilizes the Android Open Accessory Development Kit standard to connect the 16×2 character LCD as a USB device. It pairs an app on the phone which runs transparently with firmware for the ATmega2560-based Arduino compatible board you see to the left. The app launches as soon as the auxiliary hardware is connected and is responsible for determining which lines of text are pushed out to the LCD. The example code displays the current time on the top line, and scrolls incoming text messages as they are received.
This is a good way to get your feet wet with the ADK hardware. We’ve already seen it used for larger displays
like this LED marquee
, but this smaller test project doesn’t require much hardware setup. Chances are you either already have an Arduino and character LCD on hand, or can easily borrow which makes this an easy weekend project.
One note on that Arduino compatible board; it’s called a Freakduino ADK but we couldn’t figure out if it’s
a Freak Labs product
or not. If you have some insight about that, please leave a comment.
| 10
| 10
|
[
{
"comment_id": "416697",
"author": "Hackerspacer",
"timestamp": "2011-07-12T20:05:49",
"content": "I love (?) it how the breadboard, Arduino board and LCD is about 1.5x the size of the entire phone!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416702",
"author": "Fritoeata",
"timestamp": "2011-07-12T20:21:57",
"content": "Behold! insight! ;) “features: arduino mega 2560 compatibility”“freaduino adk $79US msrp”http://www.elecfreaks.com/store/freaduino-adk-p-193.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416711",
"author": "Hackerspacer",
"timestamp": "2011-07-12T20:39:45",
"content": "How is the freaduino better than the normal 2560? It mentions a few small things but it is almost $80 vs about $50 for the 2560?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416794",
"author": "MRE",
"timestamp": "2011-07-12T23:38:06",
"content": "Def NOT a freaklabs product. Akiba doesnt do blue, doesnt do overpriced, and is way busy making geiger counters at the momen.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416801",
"author": "Sqelch",
"timestamp": "2011-07-13T00:22:06",
"content": "just wondering if these are the same type of thing or this a different ideahttp://hackaday.com/2011/07/01/external-text-display-for-nexus-one/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416858",
"author": "leo",
"timestamp": "2011-07-13T03:04:13",
"content": "Hi guys !freaduino ADK is based on the Arduino Mega2560 and Circuits@Home USB Host Shield designs.In fact, ADK integrated USB HOST SHIELD and MEGA2560 function. As production costs will be MEGA2560 plus USB HOST shield. Compared to the price of MEGA 2560 is $50 and USB HOST shield is $40. We think the price $80 for Freaduino ADK is reasonable.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416955",
"author": "follower",
"timestamp": "2011-07-13T09:15:56",
"content": "Apparently they read Hack a Day:http://hackaday.com/2011/07/01/external-text-display-for-nexus-one/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417009",
"author": "follower",
"timestamp": "2011-07-13T12:52:18",
"content": "@Sqelch:It’s the exact same code–the original wording wasn’t clear but they’ve documented in some more detail how they got the code to run on a Nexus S rather than Nexus One.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418464",
"author": "ann",
"timestamp": "2011-07-16T20:15:18",
"content": "FYIArduino and Android ADK compatible boardTeemino – Android ADK Compatible, Arduino Compatible boardTeemino is an Android ADK compatible board based on Arduino Mega/2560 with USB host. (Based on Google’s reference design of Android USB accessory.)In Stock. Ships immediately.http://openelectrons.com/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "421566",
"author": "Michael",
"timestamp": "2011-07-23T02:16:07",
"content": "Perhaps I’m missing something. This could have been done using the same set up plus a bluetooth attachment for the arduino without needing the ADK.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,144.865489
|
||
https://hackaday.com/2011/07/10/slick-16-segment-pov-hard-drive-clock/
|
Slick 16-segment POV Hard Drive Clock
|
Mike Nathan
|
[
"clock hacks"
] |
[
"16 segment",
"clock",
"hard drive",
"hdd",
"led",
"POV"
] |
Hackaday reader [svofski] sent in
a fantastic looking hard drive-based POV clock
(
Google Translation
) created by a maker in the Sichuan province of China. The clock,
like the one [svofski] built
, relies on LEDs placed behind the spinning platter to create the POV effect.
Quite a few carefully placed cuts have been made to the platter, which make up the segments required to display both numbers and letters of the alphabet. This isn’t a simple 16-segment POV display however. The font uses a lot of sharp edges and odd segment lengths, so we’re guessing that quite a bit of care was taken in the production of this clock.
You can see a demonstration of the clock in the video embedded below, which shows off its ability to display numbers, text, as well as a handful of simple patterns. It looks like there are some details available on the designer’s site, however it is all in Chinese, and Google’s translation is questionable at best. If
only we knew someone
that could give us a hand with deciphering the inner-workings of this clock…
[youtube=http://www.youtube.com/watch?v=BE5rzA9dDk8&w=470]
| 20
| 19
|
[
{
"comment_id": "415613",
"author": "t&p",
"timestamp": "2011-07-10T14:13:33",
"content": "OMG those cuts are crazyI don’t know how you would program something like that",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415620",
"author": "DarkFader",
"timestamp": "2011-07-10T14:27:40",
"content": "I you look at alphanumeric segment display, you can count 16 segments. But this one add some extra segments some make it seamless.The question is how the lights are placed behind the platter.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415624",
"author": "Roberto",
"timestamp": "2011-07-10T14:33:39",
"content": "Get 16 arduinos, all of them with the ability to sense when the 0 is on top. Time the revolution time and do simple arithmetic to predict when the digit will pass above the led on your output to flash it.Now stuff the function of 16 arduinos into 1 arduino.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "415634",
"author": "adam outler",
"timestamp": "2011-07-10T15:07:36",
"content": "That’s one way to do it.. lol.",
"parent_id": "415624",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "415625",
"author": "Nocturnal",
"timestamp": "2011-07-10T14:39:37",
"content": "A translation is not really needed. most of these pages are self explainatory.Basic conceptalong with what the font looks like at the top and bottom.Initial Cutsof plater, pcb and perspex ring.Perspex to thickalternate arangement, and double the leds.ElectronicsYou’ve got me as to whatthispage is. I think it lays out the specs.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415626",
"author": "Whatnot",
"timestamp": "2011-07-10T14:43:20",
"content": "Now that the idiots at the US government have decided they can take down ANY .com and .net domain it must be a bit odd that baidu is baidu.com, I guess the US government is by extensions also responsible for the censorship the baidu searchengine employs too then? ouch.On the subject of the video itself, yeah those cuts have a mystic quality, and you only see a short glimpse of them to add to the mysticism.But realistically it’s not all THAT hard to figure out surely, it’s just a matter of timingI wonder how the cuts were made, CNC or laser or by hand or maybe even etching.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415628",
"author": "Nathan",
"timestamp": "2011-07-10T14:46:13",
"content": "16 segments, 16 digis. I bet there are 16 individually controlled LEDs behind it, with some sort of light blocker between each one to prevent bleed.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415635",
"author": "Dan L",
"timestamp": "2011-07-10T15:11:26",
"content": "It’s gorgeous and unusual. Thanks, hackaday!You don’t need a translation. You can just use your big brain to figure it out, but I’ll lend you mine for a while.The picture you need is at 2:24 in the video, which shows you the cuts that are used for the segments and the big semicircular cut that allows the processor to sense the position of the disk.Underneath the hard disk with the slots and cutsare 16 LEDs, with diffusers in front of them. They are arrayed around the central shaft, in 22.5 degree sectors.After that it’s all denouncement. When the segment that you want comes over the digit position/led position that you want, you fire the LED. You use an infrared LED retroreflection sensor to sense the edge of the inner semicircular slot, and use that to keep yourLED timing straight.If you put 2 more LEDs in each diffuser box, youcould have it do full color. With more carefultiming, you could make the text crawl continuously around the edge. You could cut polygonal pixels into the disk, instead of strokes…Gorgeous.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415636",
"author": "Russell Williams",
"timestamp": "2011-07-10T15:12:29",
"content": "http://hi.baidu.com/52_diyThere is a complete step-by-step…with photos…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415637",
"author": "MrRoboto",
"timestamp": "2011-07-10T15:16:56",
"content": "I wonder if he used an aquajet system or a laser, those cuts look very clean.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415639",
"author": "Russell Williams",
"timestamp": "2011-07-10T15:19:07",
"content": "http://hi.baidu.com/52_diy/blog/item/68ed07011f801a1b7bec2cbd.htmlAnd a doit-yourself book too!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415647",
"author": "Justin",
"timestamp": "2011-07-10T15:31:42",
"content": "I’m with Nathan, there’s 16 cuts, and I bet they’re all blocked off and the back side of the disk painted matte black. The center ring cutout is probably for speed sensing/control.The logo on the DIP40 sure looks like an Atmel, probably an AT89S52 (32 IO pins). The smaller IC is probably the TDA5140A he mentions in his blog. There’s also a better close-up of the disk on his blog, as well.Looks awesome, I want to build one!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415667",
"author": "svofski",
"timestamp": "2011-07-10T16:53:58",
"content": "For Strobeshnik I used electro-etching, but it’s a very time-consuming and painful process. The cuts like in this clock, unless you have a factory handy, are best done with a dremel milling bit and perhaps an old fashioned file. It’s a matter of proper markings, then it should be really easy-peasy.The leds are located under the disc, number of segments in digits = number of sectors in disc = number of led groups. Really simple and cool. I wish I have thought of that :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415715",
"author": "astro73",
"timestamp": "2011-07-10T18:55:21",
"content": "I agree that he used that half-circle slot to sense position.But don’t hard drives already have a stepper motor or a way to sense position? Or do they just read whole tracks and unravel it from there?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415735",
"author": "Paul",
"timestamp": "2011-07-10T19:36:41",
"content": "my jaw is droppedI was about to consider submitting my own HDD clock but it was just a simple linear hand type.throughout the build I really wanted to make something with more finesse along the lines of this but I couldn’t think of how I would go about doing it without needing all of the separate LED boxes like this person has done.truly impressive in all aspects of the build!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415835",
"author": "biozz",
"timestamp": "2011-07-10T22:54:24",
"content": "i do not envy who ever had to write the code for that in AVR C XD",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416012",
"author": "tomas",
"timestamp": "2011-07-11T08:31:46",
"content": "finally a good use for my makerbot :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416023",
"author": "psuedonymous",
"timestamp": "2011-07-11T09:13:19",
"content": "Anyone else reminded of the Baird disc-type ‘televisor’ TV? Replace the slot cuts with a spiral pattern of dots (a Nipkow disc), and you can display arbitrary images as long as you can pulse your illuminator fast enough.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416060",
"author": "svofski",
"timestamp": "2011-07-11T11:59:23",
"content": "In typical Baird TV your picture is limited to a small sector. On a second thought, if you make e.g. 16 holes and make 16 independent sectors like in this clock, you’ll have a 16-line circular raster. Nice idea worth trying, no? :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417015",
"author": "j s",
"timestamp": "2011-07-13T12:56:34",
"content": "You could do this with a glass platter by evaporating the coating with a laser.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,144.920854
|
||
https://hackaday.com/2011/07/10/repairing-a-broken-salad-spinner/
|
Repairing A Broken Salad Spinner
|
Mike Szczys
|
[
"Repair Hacks"
] |
[
"floss",
"grommet",
"parachute cord",
"salad spinner"
] |
Behold [Quinn’s] broken salad spinner, and just when lettuce and other garden produce are hitting their peak. We were surprised to find out that she was able to get the mechanism apart to
fix the broken cord
. We’re sick and tired of ultrasonically welded plastic enclosures that lock out the most well-intentioned repairman. But in [Quinn’s] case there were a few plastic plugs hiding the screws that keep the two pieces of the case together.
After diagnosing that the cause of the broken cord was a gnarly metal grommet, she removed the offender and sought a replacement cord. The first material she tried was some dental floss but unsurprisingly it only lasted through a few spins. Next on the road to repair was a shoelace which did a bit better but also ended up broken. But the discovery of some parachute cord did the trick in the end and now it’s good as new if not better!
| 47
| 46
|
[
{
"comment_id": "415566",
"author": "karl",
"timestamp": "2011-07-10T12:50:31",
"content": "iZsh:Well, how do you define a hack?To me, it’s modifying something for an unintended use, or improvising a fix for a problem when help with, or a repair is not readly avalible –Before you call it a non-hack, what have you dared to show here as a hack?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415570",
"author": "aztraph",
"timestamp": "2011-07-10T12:55:39",
"content": "OK, Kudos on fixing your salad spinner, I liked your write up and your documentation. Given that it looks like a cheap one, I am glad you are considering adding a motor. I can see the point iZsh was trying to make but I went and actually followed the link and read the article. you dug into something that broke and made it better than the original design, that’s hacking.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415571",
"author": "GoBO",
"timestamp": "2011-07-10T12:56:13",
"content": "@Everybody saying this is a new low/not a hackWHO defines what a hack is? Its just you picky people out there who have their own opinion of how the world should be and try to make everyone else fit that picture! Get over it!If your really that upset about it go stat your own blog and feature just the hacks you want, but dont criticise others for posting something that only 5% of us will be interested in. YES, im not really interested in this either, but I dont cry, I simply dont click on it and get on with my life in the outside world.So please leave HAD alone, stop the criticism and just enjoy what they sort and give you all for free or leave please :)",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6566478",
"author": "Ron",
"timestamp": "2023-01-03T23:08:15",
"content": "A hack is not a straight repair of an item. A hack is a way around and existing system to make it do something different that you need it to do. Making something work again by just fixing it is just a repair. This is not a bad thing, but it is not a hack.",
"parent_id": "415571",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "415576",
"author": "iZsh",
"timestamp": "2011-07-10T13:05:02",
"content": "@karl : repairing something with common sense isn’t a hack. It’s called repairing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415582",
"author": "aztraph",
"timestamp": "2011-07-10T13:13:49",
"content": "IZsh, did you even BOTHER to follow the link. the salad spinner was improved. that and this person shows their work. what have YOU done lately?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415583",
"author": "Adam Outler",
"timestamp": "2011-07-10T13:14:01",
"content": "Um… I don’t get it.. In the military we called that stuff “550” cord. It’s rated to hold 550lbs. so.. we tried some floss, then some shoestring, then 550 cord.. Trial and error, and killing ants with an atomic bomb FTW.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415587",
"author": "Nomad",
"timestamp": "2011-07-10T13:25:21",
"content": "@Adam: if she had said 550 cord on hand…why should she bother looking for some – in your mind – better suited cord in some shop? She had it and she used it. Because she could.I’d like to quote GlaDOS:“We do what we must, because we can”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415588",
"author": "kusamochi",
"timestamp": "2011-07-10T13:27:14",
"content": "I thought this would be one of those “Home Improvement” show — MORE POWER!! haha",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415590",
"author": "henry",
"timestamp": "2011-07-10T13:30:47",
"content": "+1 for not a hack",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415593",
"author": "Pölsa",
"timestamp": "2011-07-10T13:35:15",
"content": "haters gonna hate",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415594",
"author": "Tel",
"timestamp": "2011-07-10T13:36:09",
"content": "The definition of Hack that I have come to know is the following:“Taking an item and pushing it beyond it’s limits; or, adding new features and improvements to an item; or, modifying an item beyond it’s intended purpose; All in order to achieve an item that fits the need at hand.”Far too many people have the idea that ‘Hack’ = electronic, microchips, LEDs, wires, solder and hours of writing code. Sorry people, that’s just one way to look at it.Now look at the content of her article. It was well written, the changes and work was documented in an organized manner, ideas for future changes – INVOLVING ELECTRICITY – were noted. How many hacks these days do we get here with this sort of coverage? I’ve seen plenty that get linked that don’t even have write ups. Give the woman a break.If you’ve got better, by all means share it, so we the readers can slam you for poor grammar or a lack of documentation or what have you.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415596",
"author": "Joe",
"timestamp": "2011-07-10T13:42:53",
"content": "@IZish I agree this is weak. I said the same thing 3 years ago when they put up an article about how to put new foam covers on you headphones. I wake up to read articles about hacking because I am a programmer. If I wanted to see kindergarten craft time I would go to instructables and learn how to “Bedazzle” my jeans.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415601",
"author": "iZsh",
"timestamp": "2011-07-10T13:43:30",
"content": "@aztraph yes I did read it. Also note that I’m not criticizing his work or even himself. But because he published stuff in the past that we could relate to hacking doesn’t mean that everything he does is hacking.I’m sorry but if we have to include this as a hack, we’ll have to include almost any home-repair in the world as well.Also, it’s “funny” how people in here have a tendency to easily try to throw ad-hominem or authority arguments. That remind me of the scientology methods (famous quote from them: “what are YOU afraid of?”). I dont see how it has anything to do with my point. but if you insist you can google my nickname + {iasign,nordumper,iunlock,anysym} for examples… But I re-iterate it’s a pretty stupid way of supporting an argument.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415605",
"author": "iZsh",
"timestamp": "2011-07-10T13:48:30",
"content": "(sorry just noticed “he” is a “she”. Not that it changes anything)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415609",
"author": "sariel",
"timestamp": "2011-07-10T13:57:12",
"content": "@iZshA) there are no girls on the internetB) guys don’t eat vegetablesusing these facts i conclude this post is an early April fools joke!btw nice hack Quinn. don’t listen to the people who down your hard work, they wouldn’t know hard work if it bit them in the derriere.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415616",
"author": "YT2095",
"timestamp": "2011-07-10T14:15:35",
"content": "the “Hack” element wansn`t justhe final product in my opinion, but the Mentality (and refusal to give up on getting what you want), that alone makes this a Hack if there was any doubt.now if you can sort a replacement for old tape decks whos bands have turned to black “bubble-gum” I`d be eternally grateful :)Nice work, and NEVER quit thinking Your way!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415618",
"author": "K",
"timestamp": "2011-07-10T14:20:17",
"content": "I like the piece – it opened my mind to finding solutions to everyday tasks in professional equipment like parachute cord in article",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415627",
"author": "blue carbuncle",
"timestamp": "2011-07-10T14:43:35",
"content": "Salt water fishing leader. Usually the same stuff of braided cable with teflon or plasticoat on it. You could probably get by with some Spectra freshwater line. Parachute cord rocks though! Used it all the time in my youth thanks to my military dad. Also used to love singeing the ends and watching the little flaming bubbles drop :)Good on you for beating the salad spinner :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415631",
"author": "waffles",
"timestamp": "2011-07-10T14:55:08",
"content": "Holy crap I’m sick of this ‘not a hack’ shit on Hack A Day.Just go into the definition of a hack. There’s the MIT model train club in the 50s, and the word was actually defined in the Jargon File:“hack has only one meaning, an extremely subtle and profound one which defies articulation…. Hacking might be characterized as ‘and appropriate application of ingenuity.'”Oh, that definition is attributed to RMS, you know, the guy who started GNU. I think he knows a little bit about it than everyone else ITT.Everybody who complains can either put up or shut up. What have YOU done to get on Hack A Day?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415650",
"author": "Rob",
"timestamp": "2011-07-10T15:42:00",
"content": "I wouldn’t say this isn’t a hack but uh… I also wouldn’t say this article really caters to the kind of audience that hack a day has.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415654",
"author": "aztraph",
"timestamp": "2011-07-10T15:56:45",
"content": "iZsh, ya know you look kind of stupid correcting yourself after a post like that. right? doesn’t add anything to YOUR credibility missing a point like that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415668",
"author": "M4CGYV3R",
"timestamp": "2011-07-10T16:59:23",
"content": "You have to be kidding me…I have seen these before, but never one with a pull string. They aren’t even willing to turn a crank to dry veggies anymore? What if they had to – god forbid – shake it in a strainer with a plate over it? Madness, I say!Fixing a frivolous unnecessary piece like this instead of coming up with a better and simpler way to dry lettuce is the antithesis of hacking. It certainly doesn’t belong on this site unless it’s driven by a PID-activated motorized turntable. At least make it slightly better than the original, not just exactly the same.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415669",
"author": "1000100 1000001 1010110 1000101",
"timestamp": "2011-07-10T17:06:47",
"content": "Whatever everyone else says, she used 550 cord. She rocks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415698",
"author": "patman2700",
"timestamp": "2011-07-10T17:55:55",
"content": "@ haters/loversI can really see both sides to the “is this a hack?” argument.While this is a pretty clever method of fixing something that broke due to cheap engineering, the repair job maintains the original functionality of the device without adding any new features.IMO, there’s nothing inherentlywrongwith a project such as this being featured on Hack-A-Day. However, at least in my case, whenever I find myself trying to explain to others what a “hack” is, it’s something along the lines of “modifying a device for a use that wasn’t intended by the manufacturer or adding additional features that increase the usability of said product”. For example, the DIY Table saw (I bet the motor OEM didn’t see THAT one coming!), using FPGAs in numerous applications, puncture-resistant tires using seat belts – hell, even a toaster modified to tweet via Arduino! (though we’ve seen too many ofthoseto care)And for those that might say “WELL WHAT HAVEYOUSUBMITTED TO HACKADAY???!?, please, feel free to check out my blog.Kudos to [Quinn]! Not sure I’d feature the project on this particular site, though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415700",
"author": "patman2700",
"timestamp": "2011-07-10T18:00:36",
"content": "(P.S. Thus, at least in comparison to most of Hack-A-Day’s featured project, I’d compare this repair to replacing a popped bicycle inner tube with a heavy-duty gel-filled one.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415701",
"author": "patman2700",
"timestamp": "2011-07-10T18:02:40",
"content": "*projects",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415702",
"author": "Anonymous",
"timestamp": "2011-07-10T18:03:30",
"content": "Next it needs a bit for attaching a drill!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415720",
"author": "Retroplayer",
"timestamp": "2011-07-10T19:01:28",
"content": "WTH is a salad spinner used for anyway? I am a guy, so I don’t eat vegetables. ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415730",
"author": "improprietary",
"timestamp": "2011-07-10T19:21:11",
"content": "honey, now thats a good start but would you consider adding a four horse power electric engine to it for your next hack?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415746",
"author": "ToThePith",
"timestamp": "2011-07-10T19:52:38",
"content": "Come on, guys, forget all the pedantic moralizing about who’s the despotic designator of what’s a hack, and just look at it: it’s a salad spinner! Does that belong on H.a.D or not? Forget the bloody dictionary at home and just put your eyes on the prize, man, this is not electronics! Do I load this site to read about how to repair motor engines or learn Spanish? No. I come here for “the hacking,” for the inventions and the gadgets and the information leading to higher understanding of electronics. Shame on all of you silly gits for defending a principle that DOES NOT EVEN APPLY! As if it matters what the bloody guidebook says, you people are damn robots or something!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415781",
"author": "Renee",
"timestamp": "2011-07-10T20:52:12",
"content": "What the f*^% people? What about the hacks a few days ago that repaired and didn’t improve on the functionality of microwave keypads? What about the guy who simply replaced his CCD in his Canon A70?Seriously, if you just search HAD for “repair” you find all sorts of hacks that did little to no “improvement” yet still get commented on in a congratulatory manner.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415788",
"author": "Wonko The Sane",
"timestamp": "2011-07-10T21:04:26",
"content": "Not bad, just needs a Arduino to run a LCD display of RPM, calories used pulling the handle, and some blue LED shining everywhere….;-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415803",
"author": "hmbemis",
"timestamp": "2011-07-10T21:42:04",
"content": "I have no problem with this being here, it’s a decent hack, and even if it weren’t I’d just skip over it.Please keep posting.thanks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415874",
"author": "D_",
"timestamp": "2011-07-11T00:26:41",
"content": "@ Mr. Szczys; I’m one who approves of the entry.Anyone who has any experience with the rewind starters on small engines SHOULD understand why the cord eventually wore out, and broke. No not because of poor engineering. in time the cord wears away enough metal to create sharp edges in the metal that becomes damaging to the cord. The longer the cord lasts the more likely this is to occur. Ever noticed how a long lasting cord will eventually wear a slot in the the harder metal, a slot with sharp edges? The new cord is likely to not last as long because that same thing is going to happen with the plastic the grommet was protecting, but at a accelerated pace, but no matter how long the repair lasts it had that much more functionality. Those with more DIY experience would have looked for a replacement to use for the metal part, but that’s a moot point.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415883",
"author": "Quinn Dunki",
"timestamp": "2011-07-11T01:07:35",
"content": "Thanks for the post, HaD! Thanks to many of you who pitched in other ideas, as well. Always appreciated.Let’s not take ourselves too seriously now, folks.<3 -Quinn",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415906",
"author": "Peter",
"timestamp": "2011-07-11T02:10:38",
"content": "With all of snarky comments above, it seems lost that Quinn actually does real stuff. She has “girly” stuff like a beating pendant but she also does “manly” stuff. I particularly liked her system to record video of herself doing hot laps in a Lotus Elise. A Lotus Elise!! Videos can be found on her website.It was rather classy of Quinn to take the snarky comments in strideNow let the blonde driving jokes begin. Just kidding.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415936",
"author": "therian",
"timestamp": "2011-07-11T03:43:11",
"content": "I will go hack on a toilet",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416020",
"author": "strider_mt2k",
"timestamp": "2011-07-11T09:05:10",
"content": "Yes, you will.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416024",
"author": "Morbious Stone",
"timestamp": "2011-07-11T09:16:34",
"content": "hush trolls! thats cool I’m always finding ways 2 fix things not meant 2 be fixed, nice job",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416040",
"author": "oldfart",
"timestamp": "2011-07-11T10:55:28",
"content": "Seems as though there are more trolls than anyone else here on HAD anymore. At least those that comment.To Quinn: YES!! You rock! Keep doing what you are doing, the world needs more people like you willing to get their hands dirty to get what they want.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416094",
"author": "Nathan Eubank",
"timestamp": "2011-07-11T13:37:22",
"content": "Praise and props for sussing and repairing an item designed to be re-bought several times over the lifetime of a consumer. I think I’m not alone in having scads of consumer items that are constructed along these same design philosophies, and re-buying and re-buying items is frustrating (I know, it’s supposed to be soothing to a Western Consumer). To strengthen the weak parts in something and substantially prolong its life is good for the soul. “Shop class as soulcraft”, to cop a book title for a slogan.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416099",
"author": "effigy",
"timestamp": "2011-07-11T13:47:12",
"content": "@ MACGYVERhave you USED a pull-cord salad spinner? gods gift to those of who manage to get leaves into our gullets (eat plants, mostly leaves, as they say). And in what way could you possibly think that shaking wet leaves on top of each other is an elegant solution compared to a nearly effortless centrifuge? It may not be necessary for human existence, or even for salad eating, but its a damn good design…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417340",
"author": "medwardl",
"timestamp": "2011-07-14T05:05:06",
"content": "odd thing for this site but since it’s here I’ve always wanted to hook a drill up to a salad spinner to see how fast it would go before it shattered from centripetal force.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4881456",
"author": "Todd Nelson",
"timestamp": "2018-08-17T02:45:20",
"content": "This post is over seven years old and they’re still using the same type of cord with the easily frayed outer sheathing and thin-as-dental-floss core. Kudos on the parachute cord. I’m going to try that if I can find those plugs covering the screws to take the thing apart. Is there a video of this repair floating around somewhere?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6255501",
"author": "Mame Bate",
"timestamp": "2020-06-18T20:54:31",
"content": "Love it – bought the same salad spinner because it was the cheapest I could find at $14 CAD. (ever seen a $300 salad spinner with a fancy push-button that runs as smooth as a well-balanced bicycle wheel? I have). Mine’s lasted for about 11 years and now it’s time to fix that cord! Thanks for the proof that it can be done! Now, if I can just get it apart.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6642736",
"author": "Princess Chevy HD",
"timestamp": "2023-05-14T20:48:55",
"content": "Ummm rude! I came here for THIS exact thing and surprisingly enough on this EXACT model! So THANK aYEWWW very much H.A.D. you have hacked my salad spinner into being useful again! Aces!!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,145.004157
|
||
https://hackaday.com/2011/07/09/hardware-xor-for-output-pins-on-avr-microcontrollers/
|
Hardware XOR For Output Pins On AVR Microcontrollers
|
Mike Szczys
|
[
"Microcontrollers"
] |
[
"assembler",
"attiny13",
"AVR",
"toggle",
"xor"
] |
Did you know that most AVR chips have a type of hardware exclusive OR (XOR) option when it comes to the logic levels of the output pins? If you look in the datasheet (the image above is a screenshot from an ATtiny13 datasheet) you’ll find a section on Toggling the Pin. It turns out that if you set a PORT as an output, writing logic one to the corresponding PIN register will toggle the logic levels of that out. This is really easy to overlook if you’re writing in C, but I’ve been working on learning a bit of assembler language and found this to be very useful. Keep reading after the break and I’ll tell you how I happened upon this info and what it’s good for.
So first off, let’s talk about why this doesn’t matter very much if you’re writing in C code. Normally if you want to toggle some output pins you’ll just write a one-liner that XOR’s with a bitmask:
PORTB ^= 0xFF;
This is a bit of C shorthand (learn more about that
from my tutorial series
) that performs the XOR on the current output levels and writes the result back to the port. But the same thing can be done in hardware by writing the bitmask to the PINB register:
PINB = 0xFF;
You don’t really care, because it’s just one line of code. In fact it’s probably easier to XOR the PORTB because it makes more sense conceptually. But the compiler might end up using more cycles than if you had written to the PIN register.
I happened across this feature because I was blinking some LEDs as a way to learn assembler. I had this jumble of code in an Interrupt Service Routine:
ldi myReg, 0xFF
in intReg, PORTB
eor intReg, myReg
out PORTB, intReg
It loads a bitmask into one register, loads in the current logic from PORTB to another register, performs an XOR of the two, and writes the result back to PORTB. This takes four cycles and requires two registers. Toggling bits is such a rudimentary operation I was surprised there wasn’t a command to XOR bits directly so I started searching around.
I came across this article
over at AVR Freaks which clued me into the bit toggle feature. Now I was able to reduce my assembler code as follows:
ldi intReg2, 0xFF ;temporarity use intReg2 as a bit mask
out PINB, intReg2 ;writing to PINB effectivley does an Exclusive OR on PORTB
This results in the same toggling effect, but takes just two cycles and requires the use of only one register.
What I found most interesting is that no matter how much I use AVR chips, there ‘s never a shortage of surprises waiting to be found in the datasheet.
| 30
| 29
|
[
{
"comment_id": "415359",
"author": "Bill",
"timestamp": "2011-07-09T22:14:57",
"content": "Haha, I mentioned this trick on a blog post about IO instruction times that was featured by HAD last year.http://hackaday.com/2010/08/19/todays-arduino-moment/I didn’t deconstruct machine code but analysed the timing to conclude the PIN trick only took two cycles. See the article here:http://www.billporter.info/ready-set-oscillate-the-fastest-way-to-change-arduino-pins/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415367",
"author": "Sprite_tm",
"timestamp": "2011-07-09T22:39:34",
"content": "On the same note: Did you know something likePORTB|=(1<<LEDA)|(1<<LEDB);generates more code thanPORTB|=(1<<LEDA);PORTB|=(1<<LEDB);?The first translates to an IN instruction, an OR instruction and an OUT instruction, making for 3 instructions in total. The second one gets optimized to two SBI instructions and is one instruction shorter.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415373",
"author": "Emeryth",
"timestamp": "2011-07-09T23:09:35",
"content": "@Sprite_tmIt’s worth noting that the second method generates less code, but is slower.The SBI instruction takes 2 cycles, while IN, OR and OUT take 1 cycle each.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415374",
"author": "Alex Parting",
"timestamp": "2011-07-09T23:12:35",
"content": "I wish people would just read the datasheet more often.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415381",
"author": "ffffffffff",
"timestamp": "2011-07-10T00:00:22",
"content": "@Alex Parting:Datasheets are close to 500 pages for some chips. It’s really easy to overlook these things if you’re just skimming through, and reading the document cover-to-cover probably isn’t very productive at all.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415384",
"author": "jc",
"timestamp": "2011-07-10T00:13:32",
"content": "if I remember correctly, this is done differently in tiny and mega avrs",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415390",
"author": "hpux735",
"timestamp": "2011-07-10T00:32:07",
"content": "A good compiler would do this for you (but only if it’s better as Emeryth said).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415399",
"author": "Alex",
"timestamp": "2011-07-10T00:55:17",
"content": "jc,It appears to be the same on at least the mega328, mega644, and mega2560 and their respective families as well as the tiny4. Based on the datasheets I have in front of me.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415401",
"author": "Quin",
"timestamp": "2011-07-10T00:57:24",
"content": "Tricks like this are what separate people like me who think in C and expect the compiler to know what to do, and the folks who know their brand of chip inside-out.And the real pros know which of those instructions have erratas for when certain values are undefined.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415421",
"author": "Hussam",
"timestamp": "2011-07-10T02:28:52",
"content": "I just completed a blog entry on the same topic!http://www.hertaville.com/?p=100",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415471",
"author": "Scott",
"timestamp": "2011-07-10T06:03:30",
"content": "I guess it’s like “reading, writing, and flipping bits in C”?http://www.swharden.com/blog/2009-06-24-reading-writing-and-flipping-bits-in-c/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415472",
"author": "Scott",
"timestamp": "2011-07-10T06:03:57",
"content": "… dang, Hussam, I like that blog entry!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415484",
"author": "Zmaster",
"timestamp": "2011-07-10T07:11:40",
"content": "That’s a cool trick, nice to know.Note however that this does not work for every AVR. For example on ATMega16 the PIN* registers are read-only and the datasheet for not mention this behaviour. So keep this in mind if writing portable libraries.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415485",
"author": "Zmaster",
"timestamp": "2011-07-10T07:12:58",
"content": "typo, “for” instead of “does”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415502",
"author": "fractal",
"timestamp": "2011-07-10T08:58:21",
"content": "Seems to work for the newer AVRs, so it should be usable on most (if not all) tinys and all megas (xx0,xx4,xx8..), except old stuff like Mega8/16/32.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415573",
"author": "Gordo",
"timestamp": "2011-07-10T12:56:59",
"content": "The language is called assembly. Only the program which translates it to machine code is called AN assembler. Unless you also want to tell people that you’re not learning C, you’re learning C compiler linker. /petpeeveOtherwise nice article.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415585",
"author": "DarkFader",
"timestamp": "2011-07-10T13:20:02",
"content": "That could save some cli/sei instructions…You often know the current state of an output already, so you could just toggle instead of setting/clearing a bit.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415623",
"author": "anti-fanboi",
"timestamp": "2011-07-10T14:31:59",
"content": "@GordoMy pet peeve is people who have pet peeves that are WRONG… Do a book search on Amazon for “Assembler” and see for yourself.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415640",
"author": "signal7",
"timestamp": "2011-07-10T15:19:49",
"content": "There are two types of programmers: those who count cycles and write very obfuscated code; and then there are those that just write clearly documented code and don’t bother counting cycles.I’m clearly in the latter category. There are *VERY* few instances where I would care about saving one or two cycles. The XOR hardware will never get used because it makes defining whether the pin is a 0 or 1 excessively vague. In my opinion, this is much more likely to result in a bug in the firmware than it is to be useful.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415646",
"author": "Alex Parting",
"timestamp": "2011-07-10T15:30:52",
"content": "I’ve read several PIC mcu datasheets nearly cover to cover I ignore the dimension diagrams etc and most block diagrams.They are long but they stand you in good stead for ever. In terms of becoming idiomatic, picking up tricks like this but just understanding the architecture.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415671",
"author": "elektronisk",
"timestamp": "2011-07-10T17:10:03",
"content": "@anti-fanboi:So I searched for Assembler – 1209 results.Then I searched for Assembly – 37982 results.From the results, it seems “Assembler” is an outdated term.Thanks for proving Gordos point. What is next, Wikipedia?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415703",
"author": "anti-fanboi",
"timestamp": "2011-07-10T18:04:32",
"content": "Outdated? perhaps. what’s next, are you going to make the point that “hackers” are those that cheat in online games? The point was that Assembler can refer to the language not the popularity of the term. The fact you found more than a few proves my point. The number of results as a method of “proof” is obviously/demonstrably infantile. Pft! kids! *roll eyes*",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415706",
"author": "elektronisk",
"timestamp": "2011-07-10T18:35:40",
"content": "@anti-fanboi:Gordo: “The language is called assembly”anti-fanboi: “You are wrong, search Amazon for ‘assembler'”Me: *points out ‘assembly’ is much more common than ‘assembler’ on Amazon*anti-fanboi: “Using Amazon that way is infantile’By the way, the language is called assembly. Not disputing that assembler has been used.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415727",
"author": "Dennis",
"timestamp": "2011-07-10T19:14:52",
"content": "Using XOR to flip bits and to zero out registers was a commonly used idiom in IBM System 360 Assembly language and right through to System z. You usually learned this by reading others’ code.As Gordo points out, an assembler is a program that translates assembly language into machine code. The term is still very much in use as defined. If you go looking for an assembler manual and think it will teach you assembly language, you will be very disappointed. An assembler manual is a reference on how to use the assembler.I made that mistake when I first started learning 360 assembler.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415749",
"author": "Dennis",
"timestamp": "2011-07-10T20:03:31",
"content": "One more use of XOR is to move data. Example: (A XOR B) XOR B is A. I remember doing this, but wanted a reference. So, here it is:http://www.i-programmer.info/babbages-bag/498-the-magic-swap.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415780",
"author": "Ken",
"timestamp": "2011-07-10T20:50:18",
"content": "@hpux735: The suggested optimization (replacing IN…OR…OUT… with SBI…SBI…) is not valid. A compiler can’t optimize in a way that sets a volatile register in an unexpected state.Regarding XOR: Another common use of xor is to obtain zero (xor regn regn) because embedding constants in machine code is often more expensive. I don’t know if this applies to AVRs.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416154",
"author": "hpux735",
"timestamp": "2011-07-11T15:51:40",
"content": "@KenIt really depends on how the AVR is defined in the context of the C compiler. If the two operations are truly equivalent then the compiler can optimize.As an aside, that is one thing that I don’t like about the AVR. I don’t want a pinx and portx register… Just give me a portx like the PIC and do what I want based upon whether I’m reading of writing to it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416259",
"author": "Ken",
"timestamp": "2011-07-11T20:00:29",
"content": "hpux: Sorry, but the ability to trick your compiler into making unsafe IO optimizations is very different from saying that a good compiler should do this by default. Since the compiler can’t predict who will be watching the IO pins, it must not allow them to enter an inconsistent state, even for a cycle or two.Ken (compiler writer)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417620",
"author": "m-space",
"timestamp": "2011-07-14T20:19:28",
"content": "I haven’t tried this but why can’t you just re-write the original value, rather than 0xFF, to XOR?E.g.out PORTB, intReg…out PORTB, intRegrather than:out PORTB, intReg…ldi intReg2, 0xFFout PORTB, intReg2?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "2607087",
"author": "Robaroni",
"timestamp": "2015-06-13T14:49:29",
"content": "M-Space – You can’t directly load an I/O register with data.",
"parent_id": "417620",
"depth": 2,
"replies": []
}
]
}
] | 1,760,377,145.113597
|
||
https://hackaday.com/2011/07/09/live-cd-for-rfid-hacking-on-the-go/
|
Live CD For RFID Hacking On The Go
|
Mike Nathan
|
[
"Security Hacks"
] |
[
"live cd",
"mifare",
"NFC",
"rfid",
"sniffing"
] |
[Milosch] wrote in to tell us that he has recently released
a bootable RFID live hacking system
– something he has been diligently working on for quite some time. The live distro can be used for breaking and analyzing MIFARE RFID cards, as well as a reasonable selection of other well-known card formats. The release is based off the Fedora 15 live desktop system, and includes a long list of RFID hacking tools, as well as some applications that allow for NFC tag emulation.
His toolkit also contains a baudline-based LF RFID sniffer package, allowing for a real-time waveform display of low frequency RFID tags. The LF sniffer makes use of a cheap USB sound card, as well as a relatively simple reader constructed from a handful of easy to find components.
We have seen
some of [Milosch’s] handiwork before
, so we are fairly confident that his toolkit contains just about everything you need to start sniffing and hacking RFID tags. If you’re interested in grabbing a copy of the ISO, just be aware that the live CD is only compatible with 64-bit systems, so older laptops need not apply.
| 12
| 12
|
[
{
"comment_id": "415346",
"author": "Gil",
"timestamp": "2011-07-09T21:10:39",
"content": "Sounds very interesting. It’s only a shame not being compatible with 32bit processors.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415412",
"author": "MS3FGX",
"timestamp": "2011-07-10T01:45:17",
"content": "I’m all for keeping up with the latest and greatest…but come on; little early to bail on 32 bit completely isn’t it?That sniffer hardware is neat though, might have to check that out.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415442",
"author": "Jevin",
"timestamp": "2011-07-10T04:42:21",
"content": "I’m thrilled to see baudline [0] in the screenshot! Baudline is a phenomenal signal analyzer that has been used to investigate audio, radio astronomy, and now RFID![0]:http://www.baudline.com/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415506",
"author": "D_",
"timestamp": "2011-07-10T09:43:29",
"content": "I agree it’s a bit early to bail on 32 bit. L learned long ago if you are a doer, and you would like to take advantage of what the doers are doing, you pretty much need to use what they use.In light of the artist dude taking, posting photos of people using computers in a store found his booby in the wringer, I’d be curious what trouble there might be using RFID readers with tags you don’t own. My my assumption is just passively receiving the data that a tags sends out after being activate by reader the tag was indeed to work with is OK, but that depends what you do with the information receive. I assume that using a reader to activate a tag you don’t own would be a more egregious violation of the laws the arts is said to be in trouble over.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415564",
"author": "bothersaidpooh",
"timestamp": "2011-07-10T12:46:47",
"content": "Hack this to allow RFID authentication on laptops for login etc in 3..2…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415643",
"author": "biozz",
"timestamp": "2011-07-10T15:26:54",
"content": "lol its called backtrack 5 XD … loads of useful RFID tools therealong with loads of other fun stuff",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415853",
"author": "Cool-i-o",
"timestamp": "2011-07-10T23:34:04",
"content": "Sounds like a great idea! Will hook up tools and give it a try! :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415880",
"author": "Spork",
"timestamp": "2011-07-11T00:57:54",
"content": "Awesome idea, I’ll have to check out the distro.@CommentersEarly bail on 32bit? This is a late transition if anything. Nintendo 64 had it in 1996, and 15 years later we are just starting to make the switch?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416080",
"author": "Khanzerbero",
"timestamp": "2011-07-11T12:59:07",
"content": "By the way ive created a torrent for the file just in case, its web-seeded also:magnet:?xt=urn:btih:8C1A407B61A3767CA17977BAC28C96912F7AFED2",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "443364",
"author": "Drew",
"timestamp": "2011-08-28T23:21:08",
"content": "I would like to see the ability to use an android phone such as the samsung nexus s or galaxy s2 as a reader/writer rather than having to buy one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "473057",
"author": "taylor",
"timestamp": "2011-10-05T22:29:21",
"content": "The biggest reason that this should be available for 32 bit stuff is very simple.This system needs to be SMALL for hacking purposes. In other words, it needs to be compatible with microcontrollers such as arduinos.I’m pretty sure someone would notice me standing really close to their RFID conversation with a laptop. But it would be SO much easier to pack the software into a microcontroller that I can stealthily place near an RFID or NFC receiver.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "600639",
"author": "Roger",
"timestamp": "2012-03-11T18:59:05",
"content": "The sniffer hardware is only relatively simple reader. It would be better to have a high power reciever, which could be effective over a distance. Similar to wifi.Has it got directional finding, so you could follow a shoplifter home? or a mass scan of passports, or ID cards.IBM has got big ambitions with the internet of things and their global CPC-number database. This hack could really challenge their obnicious stazi supercontrol.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,145.163868
|
||
https://hackaday.com/2011/07/09/amazing-hemispherical-omnidirectional-gimbaled-wheel-robot/
|
Amazing Hemispherical Omnidirectional Gimbaled Wheel Robot
|
Mike Nathan
|
[
"Robots Hacks",
"Transportation Hacks"
] |
[
"hemispherical omnidirectional gimbaled wheel",
"hog",
"robot"
] |
Bradley University grad student [Curtis Boirum] has built a robot which uses quite a unique drive system,
one we’re guessing you have never seen before
. The robot uses a single motor to drive its hemispherical omnidirectional gimbaled wheel, propelling it across the floor at amazing speeds with uncanny agility.
The robot uses a simple two axis gimbal for movement, which houses a small brushless RC airplane motor. The motor spins a rubber wheel at high speeds, which propels the robot in any direction at the flick of a switch, thanks to a pair of RC servos. When the servos tilt the gimbal, they change which side of the wheel is touching the ground as well as the gear reduction, eliminating the need for a mechanical transmission or traditional steering mechanism.
While he originally thought that he had invented the concept, [Curtis] found that this technology was nearly 100 years old, but that most people had forgotten about it. We’re pretty sure people will remember it this time around. How could you not, after watching the demo video we have embedded below?
We think it’s a great concept, and we can’t wait to see what other robot builders do with this technology.
[via
Gizmodo
]
[youtube=http://www.youtube.com/watch?v=uaT7M3Nwj7c&w=470]
| 33
| 31
|
[
{
"comment_id": "415284",
"author": "Hackerspacer",
"timestamp": "2011-07-09T18:17:02",
"content": "Need 2 of these for omnidirectionability in a combat robot, stat!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415285",
"author": "Hackerspacer",
"timestamp": "2011-07-09T18:18:57",
"content": "I am guessing this doesn’t work well on gravel or sand or uneven terrain.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415289",
"author": "Marcus Q",
"timestamp": "2011-07-09T18:25:02",
"content": "darn, I experimented with this system when I was 6 and I made some spinning tops with some dc motors but at the time I never thought it was practical or could be utilized. That’s awesome",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "967790",
"author": "Drone",
"timestamp": "2013-03-01T10:14:13",
"content": "The practicality of this is limited only by your imagination!I envision these as being very useful for factory or warehouse robots where two or more of these drives render a vehicle with true omnidirectional steering. Very nice indeed!",
"parent_id": "415289",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "415294",
"author": "dancinbojangles",
"timestamp": "2011-07-09T18:37:07",
"content": "Off Route 2 in Wickapog!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415298",
"author": "WitchDoc",
"timestamp": "2011-07-09T18:49:33",
"content": "@Hackerspacer: Why wouldn’t it perform on uneven terrain?This thing is awesome! I have two slightly bigger BLDC motors (Copal 12V, 2.5A) for which i just found a perfect destination! :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415319",
"author": "moddersunited",
"timestamp": "2011-07-09T19:36:16",
"content": "impressed with the model,unimpressed by practical application",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415321",
"author": "Munden",
"timestamp": "2011-07-09T19:42:18",
"content": "Pretty cool. Doesn’t look like it would scale well with heavy loads. All of the weight would be put on the rotating shaft of the motor at an angle.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415330",
"author": "vic",
"timestamp": "2011-07-09T20:16:45",
"content": "At a glance it looks like the ball would wear quickly, and one point of contact would give little traction.Otherwise, it’s actually quite awesome, and with 2 or more of these ball-wheels the potential for omni-directional movement is akin tho the much more complicated omni-wheel design.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415338",
"author": "D_",
"timestamp": "2011-07-09T20:36:04",
"content": "A far out unintentional reinvention. 74 years ago didn’t have the tech to easy make a functioning model easily. The real world isn’t all smooth surface with the occasional runner on the floor that’s designed not to impede wheels. A whole lot of development needed. I’d think the majority of mobile robot applications require agility, and precision, with speed somewhat a luxury. Do robot events feature a gymkhana? Where their agility precision is testing first, and how quickly they can be agile, and precise second? Not really seeing this being used for cargo or passenger motor vehicles. AFAIK CVT that use a similar concept haven’t yet made inroads at all. The young man is an engineer, I doubt I mentioned anything he doesn’t already realize.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415340",
"author": "Hackerspacer",
"timestamp": "2011-07-09T20:49:16",
"content": "@Hackerspacer: Why wouldn’t it perform on uneven terrain?Run the spinning wheel into an obstacle and you will quickly find out.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415344",
"author": "Jack",
"timestamp": "2011-07-09T21:03:14",
"content": "Great! Now when will they start coming out with hemispherical tires?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415345",
"author": "jc",
"timestamp": "2011-07-09T21:07:20",
"content": "A dude named Gene Burbeck created a combat bot using that drive last year.He mounted the spinner weapon and HOG wheel on the same shaft and independently shifted the height of the rear wheels to steer.3 videos of this amazing thing.http://www.youtube.com/watch?v=R0_tARpOo6g&NR=1http://www.youtube.com/watch?v=btDQlqmYtng&feature=relatedhttp://www.youtube.com/watch?v=aNYVSdO8MHg&feature=related",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "968177",
"author": "bunedoggle",
"timestamp": "2013-03-01T21:04:49",
"content": "DANGER WILL ROBINSON!I would NOT want to be in the path of that, no sir.",
"parent_id": "415345",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "415349",
"author": "Boyan",
"timestamp": "2011-07-09T21:31:42",
"content": "Very nice model, however it appears that the model has little to no directional control of any degree of precision which would be critical for combat bot, well any true practical application for that matter.However for a college paper it is the perfect thing to get that credit and an A which I do believe the creator deserves dully!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415363",
"author": "Mythgarr",
"timestamp": "2011-07-09T22:30:19",
"content": "This probably isn’t the most practical drive for, say, a military bomb bot or a typical house bot. Then again, it looks pretty ideal for factory work.Smooth surfaces? CheckRequires maneuverability? CheckIndustry that uses a lot of robots? Check@Munden The heavy load could be worked around by using 3 or more omnidirectional heavy-duty wheels and using 2-3 of these for the actual drive. The torque on the shaft would be only the force needed to change velocity, and would be perpendicular to the axis of rotation.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415391",
"author": "WitchDoc",
"timestamp": "2011-07-10T00:35:12",
"content": "Again @Hackerspacer:My Q: Why wouldn’t it perform on uneven terrain?Your A: Run the spinning wheel into an obstacle and you will quickly find out.Either i am too optimistic (i usually am) or you are pessimistic. I fail to see the difference between an ordinary wheel and this wheel?Hitting an object while moving in any direction the would perhaps increase the speed while moving over the object. This would probably interfere with steering but then again hitting a bump with ordinary wheels could interfere withe steering as well (decreasing the speed).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415419",
"author": "Andy",
"timestamp": "2011-07-10T02:25:20",
"content": "Now i want to see a set of these on a hexapod speedy and agile.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415420",
"author": "Murray",
"timestamp": "2011-07-10T02:28:19",
"content": "kinda re minds me of the drive system used on the cars in iRobot",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415470",
"author": "Matt",
"timestamp": "2011-07-10T05:59:10",
"content": "Brilliant idea, but it seems like an inefficient method of travel. Not much surface area on the wheel, means lots of slippage, which in turn means premature wear on the ‘tire’ and reduced acceleration speeds, not to mention the motor practically being belted at full speed fairly consistently. My 2c. Having said all of that, I now want to go build one :) looks like fantastic fun",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415478",
"author": "Andrew Hooper",
"timestamp": "2011-07-10T06:39:45",
"content": "Many years ago someone developed a vehicle that had 4 of these on each corner. they used an aluminium dome coated in rubber and was able to drive in any direction rotate and it performed well in water, in sand and on other hard surfaces.awsome system and I often wondered why nothing came of it.From memory the drive motors were hydralic.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415503",
"author": "pod",
"timestamp": "2011-07-10T09:00:25",
"content": "I’d call it a ‘clit mouse gimbaled wheel robot’",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415561",
"author": "Whatnot",
"timestamp": "2011-07-10T12:35:42",
"content": "@WitchDoc a normal wheel when hitting an object won’t suddenly with the same force as before propel it in an arbitrary direction.This setup although nice does really not seem to be that good in going in a straight line anyway, it’s more a 2D fly (the insect) movement simulator :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415584",
"author": "st2000",
"timestamp": "2011-07-10T13:18:35",
"content": "@WitchDocMaybe this will help:Visualize and ordinary wheel. The only part likely to touch the ground (regardless of how bumpy) is spinning on one direction. This “hemispherical thing” has surfaces spinning in all directions all very close to the ground. If you were unfortunate enough to hit a pot hole, there’s no telling which direction you might end up going. To say the least it would be a jarring experience. To say the worst it could be deadly.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415604",
"author": "st2000",
"timestamp": "2011-07-10T13:45:27",
"content": "I am thinking this type of drive is best kept in a controlled situation. Where the surface contact is very predictable. Such as in this type of transmission (for a bike evidently – cool):http://www.moultonbuzz.com/2007/08/mondo-nuvinci-cvt-for-bikes/It does occur to me this drive makes for a very responsive vehicle. So much so I doubt one could really control it well. Which leads me to suggest a much different control paradigm.Instead of steering it, why not tell it where to go. I know the author is working on a Masters of Mechanical Engineering, and is rather proud of the fact this is a totally mechanical design with no need for a processor. But thinking how fast a multiple drive platform like this could maneuver, it would almost be better to supply start and ending points along with obstacles to a processor.Think of a classic robot war game. With this type of drive you wouldn’t need armor. The robot would simple get out of the way. And with a processor involved, getting out of the way can also mean maneuvering into attack position.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415614",
"author": "tech-no-pest",
"timestamp": "2011-07-10T14:14:14",
"content": "place this drive on top(as in direct contact) of a rubber ball and you would have the same drive system as a Tachikoma from Ghost in the shell.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415705",
"author": "Brooks",
"timestamp": "2011-07-10T18:17:09",
"content": "Here I was about to suggest that one way of solving the issues with uneven terrain would be to put this on top of a spherical ball (so that the drive only touches the smooth ball, and then the ball transmits the motion to the ground) — and I see that tech-no-pest has just suggested the same idea.Another advantage of that arrangement is that the ball can support the loads, so that they’re not being supported on the drive mechanism.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415714",
"author": "Chris",
"timestamp": "2011-07-10T18:51:59",
"content": "I to came up with this when I was a kid, after thinking it through i was unable to come up with a practical application.After seeing it again here it seems to me it may be just the thing for single wheeled balancing robot, however that too seems to defy practical application.The problem of high zero speed friction can be dealt with by adding a button to the center of the wheel mounted in a thrust bearing, so that no friction occurs at zero speed. Flattening out the wheel into a smaller section of larger Sphere will increase load capacity and decreasing the speed the wheel turns will increase precision at the expense of top speed.However it remains obligated to flat, hard surfaces and in my opinion a solution in search of a problem.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416034",
"author": "RobRoss",
"timestamp": "2011-07-11T09:54:34",
"content": "@Matt, “not to mention the motor practically being belted at full speed fairly consistently”It doesn’t have to be that way. Car engines run pretty fast all the time when on. You just speed up the engine and apply the rotation to the clutch to engage the wheels when you need motion. The same could be applied to this no?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416057",
"author": "wardy",
"timestamp": "2011-07-11T11:55:05",
"content": "Perhaps this might have application in industry. Automated robots that transport things around a factory might benefit from fewer moving parts. Or cleaning robots?They’d clearly make awesome indoor RC racing cars. That thing can really move – plus you’ve got built in smooth acceleration, thanks to the variable effective gearing ratio.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416347",
"author": "Wolf",
"timestamp": "2011-07-12T01:02:23",
"content": "Love the sound this thing makes. It’s like it’s gliding effortlessly. I’ve always hated that exertive whine electric RCs make.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "456221",
"author": "Drak",
"timestamp": "2011-09-15T21:57:07",
"content": "Same technology that allows janitors to steer their floor polishers in high schools and businesses nightly. Definitely not new, but a nice application none the less.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "982426",
"author": "summat",
"timestamp": "2013-03-21T11:53:48",
"content": "http://blog.modernmechanix.com/spherical-drive-wheel-propels-odd-vehicle/",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,145.303961
|
||
https://hackaday.com/2011/07/09/turn-any-bluetooth-device-into-a-midi-controller/
|
Turn Any Bluetooth Device Into A MIDI Controller
|
Mike Szczys
|
[
"Musical Hacks"
] |
[
"android",
"bluetooth",
"midi controller"
] |
[Peter Brinkman] is working on
a circuit that makes it easy to interface MIDI and Bluetooth devices
. His target hardware has been a MIDI compatible keyboard and an Android phone. He was inspired to tip us off about the project after reading about yesterday’s
Bluescripts project
.
We’ve embedded two demo videos after the break. They show [Peter] first using this hardware to receive MIDI signals from a keyboard on his Android phone, and then he demonstrates using the phone and an on-screen musical keyboard to transmit data back to a MIDI device which generates the intended sounds.
It’s an interesting project and he’s headed down the kit-production path right now. You’ll want to browse all of his recent posts, but we especially liked reading
his thoughts about simplifying the circuitry
. He originally had two separate voltages running in the circuit with a level converter for data signals. After some re-conceptualization he ditched several components and improved the functionality a bit.
[youtube=http://www.youtube.com/watch?v=lkd9_suLcs8&w=470]
[youtube=http://www.youtube.com/watch?v=2AJjBCInzR8&w=470]
| 11
| 11
|
[
{
"comment_id": "415275",
"author": "lou eney",
"timestamp": "2011-07-09T17:23:20",
"content": "this is awesome. I have the same yamaha keyboard as you and this is a cool tool if put to good use. Picture this with a midi guitar…. my mouth waters",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415297",
"author": "dsurge",
"timestamp": "2011-07-09T18:47:45",
"content": "I was actually expecting quite a bit of latency.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415332",
"author": "zuul",
"timestamp": "2011-07-09T20:20:14",
"content": "pretty cool",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415376",
"author": "wetware",
"timestamp": "2011-07-09T23:32:29",
"content": "it’s a great idea but…like so many other hobby microcontroller project midi kits out there I don’t see any isolation of the midi ports from the rest of the circuit. older midi devices are very sensitive to these types of microcontroller based adapters not having proper isolation and introducing too little/much current on the midi cable.and latency isn’t much of a problem from the bluetooth side as midi is already fairly slow and adapting bluetooth signals to midi is only going to add latency in the 1-2 ms range where midi is already at ~ 5-9 ms",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415389",
"author": "nettoyeur",
"timestamp": "2011-07-10T00:29:30",
"content": "@wetware The MIDI circuitry is straight from the specs of the MIDI Manufacturers Association (http://www.midi.org/techspecs/electrispec.php), except that a few resistor values and the buffering of the output have been adjusted for operation at 3.3V. In particular, the MIDI In port connects to an optoisolator and has no electrical connection to the rest of the device. Am I missing anything?As for latency, you have to consider delays due to buffering, protocol issues, and asymmetries between master and slave. (That’s actually the reason why MIDI over Bluetooth didn’t take off when people first tried it a few years ago; prior to Bluetooth 2.1, latency and jitter were terrible.) Bluetooth 2.1 is supposed to add about 7ms, which is consistent of my measurements of an overall latency of 15-20ms (including everything, Bluetooth and MIDI).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415565",
"author": "Whatnot",
"timestamp": "2011-07-10T12:49:49",
"content": "That bluesmirf modem is 65 bux? That’s not the cheapest way of doing thing eh.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415574",
"author": "st2000",
"timestamp": "2011-07-10T12:59:33",
"content": "@HADThere are many Bluetooth protocols. So I don’t think you can turn *any* Bluetooth device into a MIDI controller. There is a re-occurring misconception about Bluetooth in the forum as people keep trying to hack a cell-phone ear-piece into a stereo head set -or- try to get keyboards to work with their Bluetooth media players.@wetwareI always thought MIDI isolation was to prevent current loops or, worst, to prevent electrocuting someone on stage. But this is a self contained device that runs on batteries. What difference would it make if it had good or bad MIDI isolation?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415608",
"author": "nettoyeur",
"timestamp": "2011-07-10T13:55:17",
"content": "@Whatnot True, the BlueSMiRF Gold is a bit expensive, but I’ve only used it in the very first prototype. Recent versions use RN-41 or KC-21 Bluetooth boards, which are around $20.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415725",
"author": "Volfram",
"timestamp": "2011-07-10T19:12:21",
"content": "@nettoyeur: Pay no attention to Whatnot. He considers any home-built project utterly worthless if it costs any more than half what a store-bought solution would cost, even if there’s no store-bought solution. Makes me wonder what he thinks of homework assignments in engineering schools.I, on the other hand, have been looking for something EXACTLY LIKE THIS! When do you intend to start taking orders?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415733",
"author": "Whatnot",
"timestamp": "2011-07-10T19:30:41",
"content": "@nettoyeur ah, there we go, 20 is much more realistic for a hack project :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415943",
"author": "nettoyeur",
"timestamp": "2011-07-11T04:11:36",
"content": "@Volfram We currently don’t have a firm date for taking orders, but I’m hoping that we’ll get there soon. Stay tuned!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,145.211926
|
||
https://hackaday.com/2011/07/09/measuring-home-networks-with-bismark/
|
Measuring Home Networks With BISMark
|
Mike Szczys
|
[
"Misc Hacks"
] |
[
"bandwidth",
"gateway",
"openwrt",
"router"
] |
The
Broadband Internet Service BenchMARK
is an open source initiative to put tools in the hands of the common Internet user that will make measurement and analyzation of home network traffic easier. It targets LAN and WAN network utilization by measuring latency, packet loss, jitter, upstream throughput, and downstream throughput. Of course gathering data isn’t worth anything unless you have a way to present it, and to that end the Project BISMark team has been developing a web interface where you can view the usage of anyone who’s running the firmware.
The project builds on top of
OpenWRT
, which means that you should be able to run it on any router that’s OpenWRT compatible. This includes the ubiquitous WRT54G routers and many others. We remember when DD-WRT added bandwidth monitoring as part of the standard release, which really came in handy when the stories about ISP bandwidth capping started to hit. We’re glad to see even more functionality with this package as it can be hard to really understand what is going on in your network. After the break you’ll find a video detailing the features of BISMark.
[youtube=http://www.youtube.com/watch?v=v3hjp8EEJKs&w=470]
| 18
| 18
|
[
{
"comment_id": "415227",
"author": "Aaron",
"timestamp": "2011-07-09T15:01:32",
"content": "“Analyzation”? The word is ‘analysis’. Jesus H. Christ, do any of you ever read what you type at any point before or after it’s posted?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415229",
"author": "Kuy",
"timestamp": "2011-07-09T15:07:12",
"content": "@Aaron +1 – the single biggest improvement that the HaD staff could make to the blog is to proofread each post. Surely there are spelling- and grammar-checking plugins for WordPress that can at least catch the simple stuff!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415231",
"author": "rusty",
"timestamp": "2011-07-09T15:16:19",
"content": "Did this grammar issue make it hard for you to understand the post? no? move on then. trolls.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415241",
"author": "Adam Outler",
"timestamp": "2011-07-09T15:31:26",
"content": "meh.. looks like they’re trying to sell routers.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415242",
"author": "techie",
"timestamp": "2011-07-09T15:32:43",
"content": "I installed it on my Buffalo WZR-HP-G300NH. Bandwidth graphs aren’t working for me. The images don’t load. Their documentation on how to set it up isn’t very clear.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415243",
"author": "jojo",
"timestamp": "2011-07-09T15:36:17",
"content": "@Adam OutlerWhere does it say they are selling routers? It says they are FREE. I do not see anything about a price tag!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415247",
"author": "Grazz256",
"timestamp": "2011-07-09T15:59:52",
"content": "@Aaron +1 – I think the media (blogs, news sites, radio, TV, etc.) in general need to take a couple of English language courses. Nothing like watching the news and having the anchor mispronounce words or use poor English. On the other hand what else am I going to rant about?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415257",
"author": "tooth",
"timestamp": "2011-07-09T16:39:58",
"content": "@rusty: brouhaha + ∞ I totally agree with you. i have dyslexia and i don’t even see the mistakes in the post i get the same type of info and what they are trying to get across.on to the post.i was looking for something like this.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415258",
"author": "hackersmith",
"timestamp": "2011-07-09T16:43:33",
"content": "Doesnt DD-WRT & Tomato firmwares already have bandwidth speed usage and total transfers per month?This firmware already has a bunch of extra features they dont but I doubt that normal users will want/need such abilities.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415260",
"author": "Drone",
"timestamp": "2011-07-09T16:48:48",
"content": "This is interesting. It seems this is based on OpenFlow & NOX (correct me if I’m wrong just taking a cursory look), which seem to be alive at post-time. Unfortunately, IMO the choice of OpenWrt and (especially) the Netgear WNDR3700 hardware is not good. The WNDR3700 (like the WNDR3500L) seems to have NO external antenna connection (STUPID for what is supposed to be an “Open” router). Seehttp://www.myopenrouter.com(a Netgear site). Also, when I looked at the WNDR3500L it seems there was no fool-proof way to “unbrick” the router after hacking. The ASUS WL-520GU has a button for this (brilliant feature!). But the WL-520GU is getting hard to find these days, and is old-in-the tooth when it comes to memory, etc. (plus the USB connect is dicey, see Tomato-USB). Hmmm… seems like you could do this yourself with the likes of Iperf plus a sprinkling of scripts (Perl Melikes) and the likes of RRDTool and/or MRTG (yeah, old-school perhaps).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415264",
"author": "Troy",
"timestamp": "2011-07-09T16:52:26",
"content": "If you don’t have a Service Level Agreement (sla) your ISP hasn’t guaranteed anything. There were two phrases I had to learn working in the Telecom and Cable industries, “Best Effort Service” which is all you’re getting if you aren’t paying for an SLA, and Not Technically Feasible (NTF).Best Effort Service means we’ll try to provide the highest advertised speed for your service plan through our equipment, but the ISP can’t promise anything once you get past that to the open internet.Not Technically Feasible means what you think it means, The service you want can’t be provided because of something beyond the companies ability to resolve.This isn’t anything against this technology, I just hope you guys put a disclaimer somewhere so hundreds of entitled “power users” don’t run to their ISP’s thinking their getting ripped off when that may not be the case.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415265",
"author": "Gert",
"timestamp": "2011-07-09T16:52:48",
"content": "Is there an equivalent for your home electric system? Incoming frequency, voltage,…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415267",
"author": "Mike Szczys",
"timestamp": "2011-07-09T16:55:20",
"content": "I generally try not to feed the trolls, but here I go again.Yes, I proofread my posts. Yes, we have spell checking software (actually both in browser and in the WYSIWYG editor). ‘Analyzation’ was flagged by both but the suggested replacement was not ‘analysis’ and for some reason I didn’t come up with it myself.But I did take the time to look upa definition of ‘Analyzation’, it is a word.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415276",
"author": "lou eney",
"timestamp": "2011-07-09T17:25:31",
"content": "man grammer nazis please move along. I for one, don’t need to waste my time proof reading this crap; i’d like to get the info fast.Cool app i’ll have to check it out.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415324",
"author": "mad_max",
"timestamp": "2011-07-09T19:52:12",
"content": "@AaronYou know you’re on the internet, right? And you know this is a blog, right? Just making sure.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415351",
"author": "Rodders",
"timestamp": "2011-07-09T21:42:55",
"content": "@toothNice to know there are other dyslexics out there that read these posts the same way I do.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415413",
"author": "Cynyr",
"timestamp": "2011-07-10T01:54:16",
"content": "Is there something like this that is simple-ish to set up on a linux box that is a router?By simple, I mean no more than drop some pages in a dir served by my http server, give it access to postgresql, add a canned iptables rule, and away it goes.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "420137",
"author": "Ted",
"timestamp": "2011-07-20T09:24:54",
"content": "Free router or not, the thought of swapping my heavily-tweaked DD-WRT router, for the mysterious Bismark router, is a show-stopper.I encourage Bismark to implement an “transparent” mode so their service can just quietly sit between modem and existing router.If they really want participation, they should develop a downloadable firmware, so we can flash it onto our spare OpenWRT capable equipment.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,145.639182
|
||
https://hackaday.com/2011/07/09/diy-guitar-fuzz-pedal/
|
DIY Guitar Fuzz Pedal
|
Mike Nathan
|
[
"Musical Hacks"
] |
[
"fuzz pedal",
"geranium",
"music",
"transistors"
] |
Instructables user and Community Manager [Randy Sarafan] recently put together a tutorial
on how to build an ages-old musical standard
, the “Fuzz Pedal”. He says that the secret to rocking out is fuzz, so if you can handle both a soldering iron and a guitar, this project is for you.
When you take a close look, the pedal’s components are actually quite simple. The distortion is created by a pair of transistors, which in his case are vanilla NPNs from RadioShack. We have covered
other distortion pedal builds before
, and they have used germanium transistors to obtain a ‘creamier’ sound – you should be able to swap these cheap ones for uprated models with little trouble.
The handful of components were soldered neatly to a piece of perf board, and placed into a sturdy metal case that looks like it can withstand even the harshest abuse. He’s got schematics and a BOM in his writeup, so all that’s keeping you from a rocking weekend is a little bit of time and a soldering iron – what are you waiting for?
Stick around to see a quick video of [Randy’s] fuzz pedal being built.
[youtube=http://www.youtube.com/watch?v=u4xWnXvug54&w=470]
| 20
| 20
|
[
{
"comment_id": "415196",
"author": "ZeUs",
"timestamp": "2011-07-09T12:52:53",
"content": "I like how quality sound is playing throughout the video and it ends with that really blank sound coming from that self-build guitar.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415200",
"author": "Mattster",
"timestamp": "2011-07-09T13:03:10",
"content": "I made a distortion pedal from 2 germanium transistors I pulled from a TV. I matched them for gain also called Hfe with a socket I plugged them into on my multimeter. I found that all the ones I pulled off the board were already closely matched.As a sidenote Tom Scholz used a pair of LED’s and an op amp in his distortion circuit for the Rockman X100 effects box.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415211",
"author": "KanchoBlindside",
"timestamp": "2011-07-09T14:07:58",
"content": "FTA: “…The handful of components were soldered neatly to a piece of perf board, and…”I lol’d",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415214",
"author": "adamziegler",
"timestamp": "2011-07-09T14:17:04",
"content": "wait… I want to hear that pedal in action. If it was in that video, I think I missed it…. or my memory of the fuzz pedal was greatly over exaggerated.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415222",
"author": "strider_mt2k",
"timestamp": "2011-07-09T14:32:39",
"content": "Um…where exactly is the fuzz?Not hearing it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415223",
"author": "Matt",
"timestamp": "2011-07-09T14:46:18",
"content": "Is it just me or did he just put a pcb in a metal box without any insulation or stand-offs?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415225",
"author": "Brian",
"timestamp": "2011-07-09T14:55:45",
"content": "Matt: If you read the article, you’ll notice they put a piece of wood over the inside of the metal cover for insulation. They video doesn’t make that part clear.Also does anyone else find it odd that this video makes extensive use of specifically RadioShack parts?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415252",
"author": "strider_mt2k",
"timestamp": "2011-07-09T16:15:59",
"content": "Not unusual for an entirely Radio Shmack-created piece of hackery. -It used to be entirely common!Radio Shmack has been trying to promote hacking and the sales of their parts lately (too little too late if you ask me) and this could be one of the results of this latest promotion.The History Channel production level is a good indicator as well. lol",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415262",
"author": "H3llphyre",
"timestamp": "2011-07-09T16:51:51",
"content": "@strider_mt2kWait, you mean the R being perfectly aligned on the solder so you can see it while he’s soldering, was done on purpose?Hey, awesome for Radio Shack. This is how you do it. Show people how to build neat stuff with what you are selling.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415291",
"author": "Quin",
"timestamp": "2011-07-09T18:29:36",
"content": "sounds like it is missing clipping diodes on the output. A similar pedal I did nearly 20 years back had the same sound. barely did anything until you cranked the volume, then it sprung to life. Two clipping diodes just made it do that at lower volumes.To get that clipped effect put two diodes, facing opposite but still parallel, from you output path to ground. The idea is to clip the top and bottom off the waveforms, cheap RS silicon diodes have one sound, others sound different. Or if you want a challenge, those R-C frequency guides can be used to only distort certain ranges and harmonics.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415314",
"author": "ansil",
"timestamp": "2011-07-09T19:15:56",
"content": "4 resistors 3 caps battery snap wire and 2 silicon transistors perfboard………. from radioshack10,000USDactual value69 cents",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415322",
"author": "Hiatus138",
"timestamp": "2011-07-09T19:42:46",
"content": "The shacks in my town, portland, OR, recently about tripled the size of the diy sections. They are stocking kits from velleman, copper clad pcb and more differdnt protoboard, and a lot more tools and components, not just the drawers. Yeah, a lot of stuff is pretty spendy, but so is milk at a gas station, for example. It’s convenience you are paying for. Not having to pay shipping, and wait for the delivery. I still would like to see the components’ prices more in line with the real world, 3 bucks for 10 resistors IS too much to pay for convenience.All in all, though, I am starting to have a bit of hope that this “back to our roots” ad campaign actually will stick, and RS _will_ support us hobbyists well!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415327",
"author": "TacoStand",
"timestamp": "2011-07-09T20:08:54",
"content": "This was pretty obviously commissioned by radioshack but I guess it’s a step in the right direction, although he doesn’t explain that buying all those components at radioshack is more expensive than buying a real effects pedal.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415329",
"author": "qwerty",
"timestamp": "2011-07-09T20:16:14",
"content": "@Mattstar: yup, germaniums sound better because of their intrinsic defects (lower gain, lower frequency response, horrible coherency to their specs which makes ten pedals different each other) compared to silicons, but using some tricks and different techniques silicon also can sound fantastic. The Tom Scholtz’s Rockman you named was one of the best solid state distortion units I heard in my entire life, the portable unit was also really good albeit a bit too noisy.Much better compared to a germanium fuzz, but honestly they’re entirely different things: a fuzz is more of a solo thing (think Jimi, the sound is very close) while a distortion unit that clips the entire waveform like most dual diode/LED/etc do is more versatile and IMO much better for rhythm guitar.On a side note here’s one more reason why RS and other off line vendors have problems these days. They put every single component in one bag? Are they F* insane?!?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415336",
"author": "zuul",
"timestamp": "2011-07-09T20:35:13",
"content": "lol, saw this on instructables and thought it was kind of poor, surprised to see it hereyeah, loling at the radioshack partsim sure you can do it and it will work but something about this whole thing just isn’t righti don’t see why these simple distortion pedals get a lot of attentionthere are so many really good diy guitar pedals that get left outlook up diystompboxes.com or generalguitargadgets.com",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415358",
"author": "D_",
"timestamp": "2011-07-09T22:08:45",
"content": "I thought the unamplified homemade guitar at the begging, and end, with the good music in the middle was an attempt at humorous irony. My tech school instructor would have failed that attachment of the wire to the phone jack. Saying a connection is to be both electrically, and mechanically secure before applying the solder. Then they introduced us to PCB where nether is the case. :)I wouldn’t be surprise to someday read a Radio Shack hater grousing about how Radio Shack doesn’t carry electron tubes, and if they did how about how much more than they are via mail order. Although when all order costs are factored in they may not be cheaper. In the event Radio Shack again stocks a greater variety of components, it’s likely to be short lived if they don’t sell. As far as I’m concerned a few pennies is worth the value added of being able to get what I needed when I wanted to buy them is worth the cost. No doubt those who use several components on a daily basis are placing order on at weekly basis at least. They will save in the long run, but that isn’t most hobbyists.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415361",
"author": "D_",
"timestamp": "2011-07-09T22:27:50",
"content": "@qwerty no they aren’t insane. Such packaging curtails theft to some degree. Also appeases those who don’t like buying a packing of several of the same components, when they just only want one. Anyway it’s not unusual for items to come from on line vendors to come with one component to a package as well. For all vendors such packaging is easier to bar code.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415411",
"author": "Mattster",
"timestamp": "2011-07-10T01:28:45",
"content": "I think some scientist modeled Jimi Hendrix and the result is the number 42",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415458",
"author": "Joe",
"timestamp": "2011-07-10T05:11:30",
"content": "@Quin I don’t think what your hearing is actually the pedal. The schematic looks like a derivative of the Dallas Fuzz Face. Not only does the Fuzz Face not sound like whatever is playing in the video, but it also does not use clipping diodes.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416332",
"author": "Joe Bonasses",
"timestamp": "2011-07-11T23:41:25",
"content": "That’s strange, I went to the instructables site, but was unable to access all of the information. I wonder if they’re ever going to fix that site?",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,145.692799
|
||
https://hackaday.com/2011/07/08/internal-7-segment-ps3-display/
|
Internal 7-segment PS3 Display
|
Brian Benchoff
|
[
"Playstation Hacks"
] |
[
"fan speed",
"multiple 7-segment display",
"ps3"
] |
[Zach] sent in his
temperature controller and display for PS3
, and even though it only works with a PS3 fat, we like our PS2 backwards compatibility very much, thank you.
The build stated off with [Zach] putting thermal sensors on the CPU, the RSX, and Northbridge of his PS3. After starting out controlling the fan with his laptop, he moved on to an integrated fan and display controller after seeing this
post
about a ‘hidden display.’ In the end, one of the coolest looking PS3 mods we’ve ever seen was born.
The build runs off an Arduino Pro that gets the temperatures from the sensors, prints everything to a custom 7-segment display board, and controls the fan. [Zach] thankfully made the Arduino source available and also put up some board files if you’d like to make your own. It’s a pretty impressive build that’s completely invisible when the PS3 is powered off.
The design process of the fan controller is pretty interesting. It first started out as
4 independent 2-digit displays
before moving onto
2 displays with 5 LED indicators
. Seven 7-segment displays
with a really neat custom board
were used in the final build.
The Gerber files for these display boards are available to download, and would definitely be useful for other projects. Check out a video of the fan controller and display in action below.
[youtube=https://www.youtube.com/watch?v=ynWb8_MXAEM&w=470]
| 14
| 14
|
[
{
"comment_id": "414998",
"author": "John Boxall",
"timestamp": "2011-07-09T00:30:52",
"content": "Excellent mod, love the ‘1977’ look with the 7-segment display.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415005",
"author": "Pilotgeek",
"timestamp": "2011-07-09T00:51:44",
"content": "I knew that translucent plastic could be put to good use =). I would love this for my PS3. It was salvaged + reflowed after someone overheated it, and I don’t want that to happen again.Mine isn’t backwards compatible though =\\",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415028",
"author": "fotoflojoe",
"timestamp": "2011-07-09T01:56:33",
"content": "Nice! Reminds me of my old Heathkit digital clock.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415040",
"author": "Wes",
"timestamp": "2011-07-09T02:23:45",
"content": "It would be really awesome if he added a thermal contact switch (like the power and eject buttons) to toggle through the different display read outs. Love the hack though! The blue looks awesome!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415061",
"author": "lou eney",
"timestamp": "2011-07-09T03:58:45",
"content": "finally something useful for the gaystation 3. At least this is the older bckwards compatible model. Nice work.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415076",
"author": "ChalkBored",
"timestamp": "2011-07-09T04:24:43",
"content": "Now make it blink 12:00 when it’s not being used.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415096",
"author": "Hirudinea",
"timestamp": "2011-07-09T05:02:00",
"content": "Sometimes you see a hack and think “Why didn’t the company install this as standard?” And this is it.@Wes: Yep, toggle switch and it would be perfect.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415100",
"author": "KillerBug",
"timestamp": "2011-07-09T05:08:58",
"content": "FYI…it is a 40GB model (not backwards compatible). I probably wouldn’t have done it with a 60GB model since there is a memory card reader there.I’ll think about the ps3-style controls (they actually measure capacitance, not heat).I kinda like the 12:00 idea…but I’m just not sure it is worth the work for the joke.I am going to add a startup message…if I can think of something funny to write with the limited letters available…I don’t have K, so I can’t even use the F word.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415106",
"author": "asiekierka",
"timestamp": "2011-07-09T05:20:24",
"content": "When does he get sued?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415137",
"author": "bothersaidpooh",
"timestamp": "2011-07-09T07:15:25",
"content": "I have some large blue LEDs here from a defunct clock, maybe my PS3 (RSoD, so not quite so terminal as a YLoD) can now be hacked.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415139",
"author": "cutandpaste",
"timestamp": "2011-07-09T07:16:07",
"content": "Cool!I remember being amused when I discovered that my fat PS3 was made with translucent plastic. I am fairly surprised that nobody thought of this before…One of these days, I’ll get motivated to hack on that fat PS3, and something similar to this will be toward the top of the list of clever things to do with it. (It’s only good for hacks, anyway: The Blu-Ray portion of the optical drive is dead, though the rest of it works fine…)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415210",
"author": "grenadier",
"timestamp": "2011-07-09T14:03:06",
"content": "@wes Pretty sure it’s a capacitive touch sensor.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415215",
"author": "Volfram",
"timestamp": "2011-07-09T14:18:57",
"content": "@killerbug: Cypress makes a series of microcontrollers for capacitive touch sensor driving which are quite cheap.(I bought a dozen of the mid-range ones for $2.50 each) The downside is, the ones I got are QFN(my fault for looking for a challenge, they do make more hobbyist-friendly sizes), and I think I burned the first one up while trying to solder it to a breakout board.But hey, that’s why I bought a dozen, right?@asiekierka: as soon as a certain Hack-A-Day reader I won’t name decides this can be used for piracy and notifies them.(It can’t, but he’ll decide it can anyway.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "787356",
"author": "carl",
"timestamp": "2012-09-17T18:00:44",
"content": "cooool just kidding",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,145.74725
|
||
https://hackaday.com/2011/07/08/g-mean-pay-kyle-mcdonald-a-visit/
|
G-men Pay [Kyle McDonald] A Visit
|
Mike Szczys
|
[
"News"
] |
[
"apple",
"fraud",
"kyle mcdonald",
"secret service",
"united states"
] |
Looks like
the men in black have paid [Kyle McDonald] a little visit
. The United States Secret Service is investigating him for fraud and related activity for
his People Staring At Computers project
. We just took a look at that one yesterday, and were thankful that all he was doing was taking people’s pictures and not stealing their information. Looks like [Uncle Sam] wasn’t being as lenient–or it could have been Apple that did the complaining since mums the word from the corporate giant. [Kyle’s] also
keeping his mouth shut
after soliciting the advice of the
Electronic Frontier Foundation
.
Since details are scarce, it’s time to play armchair lawyer. Let us know in the comments what you think [Kyle] might be up against, and whether we’ll see this thing hit the courts or not. And remember not to take those comments as legal advice since none of us actually know what we’re talking about.
By the way, the gentleman seen above isn’t [Kyle], he’s one of the unsuspecting ‘victims’ with some
wikimedia commons
slapped in for effect.
[Thanks Craig, David, and others]
| 112
| 50
|
[
{
"comment_id": "414941",
"author": "Paul",
"timestamp": "2011-07-08T22:47:41",
"content": "“Let us know in the comments what you think [Kyle] might be up against”Yes. Let’s throw some gasoline onto this fire. Let’s do that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414943",
"author": "betta",
"timestamp": "2011-07-08T22:50:44",
"content": "simple, the government hates competition, and they spy on you all day, so they must take out the poor guy who is just imitating them",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414944",
"author": "long",
"timestamp": "2011-07-08T22:51:08",
"content": "Why the secret service? why not the FBI or the local police?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414951",
"author": "Pedro",
"timestamp": "2011-07-08T23:06:46",
"content": "Good.I fucking hate what some people claim is “art”. This prank was an invasion of privacy, and a bit of a dick move, to be honest. I don’t think he deserves jail time, but a fine or community service seems appropriate.If I were the EFF, I wouldn’t be representing him in this case; the EFF should stand against the erosion of online privacy at all times.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414952",
"author": "Bill Doorley",
"timestamp": "2011-07-08T23:13:08",
"content": "This is an interesting question: does a person using a public computer equipped with a camera have a reasonable expectation of privacy?Judging by the way I’ve seen people using computers in Apple Stores, you would think the answer is “no.” Not only to they use the built-in cameras to take photos of themselves to post on Facebook, but they leave their pictures behind, sometimes even as wallpaper on the screens. This is mostly younger people, of course. We oldsters tend to be a bit more camera shy . . . and quite a bit less photogenic.But imagine that the unsuspecting customers were photographed by a corporation rather than an individual. There would be a huge public uproar, denunciations of the corporation by pundits and politicians, a rash of goofy anti-photo actions by customers in stores, and a huge public relations disaster for the corporation itself.It’s possible that Mr. McDonald stepped over the line here, but whether or not he actually committed a crime is the kind of question that makes a lot of boat payments for lawyers.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414959",
"author": "Alex",
"timestamp": "2011-07-08T23:25:05",
"content": "I just think this was a statment that the author became too wrapped up in. Failed to see the legal and ethical implications of its effects and bit him on the ass. This is why id hope the EFF would help him.Realistically, anyone with a passion can find themselves in a tricky situation if they dont concider the legal and ethical implications.To site a bad refernece. Gary Mckinnon. Bad in the sense he knew what he was doing was bad, in this instance the guy perhaps didnt even concider that it was a harmful deed.He really doesnt deserve jailtime In My Oppinion.A fine maybe, Or Community Service.But … Really. DO you think this guy will re-offend. I think he will be too Sh*t scared to do anything art related on a pc again !",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414961",
"author": "obsoehollerith",
"timestamp": "2011-07-08T23:27:09",
"content": "whoops! a stunt like that could have been a useful way of proving a point- too bad it was wasted on a ‘just ’cause i can’.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414965",
"author": "Alex",
"timestamp": "2011-07-08T23:31:00",
"content": "@obsoehollerithI think “Because of what it could have been” is why he is in the hot water !",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414966",
"author": "caleb",
"timestamp": "2011-07-08T23:31:35",
"content": "please tell me im not the only one who saw this coming",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414967",
"author": "zuul",
"timestamp": "2011-07-08T23:33:10",
"content": "i don’t see how it’s an invasion of privacy, they’re in a public placehe should have their consent before putting them in his project thoughhe could have stood outside the store and asked if they wanted to participate in his project when they came out.apple probably filed the case because it made them ‘look bad’",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414968",
"author": "Renee",
"timestamp": "2011-07-08T23:35:26",
"content": "Even though this was done in a place accessible to the public, that does not mean it’s a public space.After all, if you tried taking pictures in a public bathroom you’d be arrested. Simply saying “it’s public, I’m legit” doesn’t count.So right away, since this is a private establishment, most of the artists legal points get thrown out of the window.I even think you could argue that utilizing a computer, even if it’s accessible to the public, counts as a right to privacy because you can use it to check private material.So yeah, I can’t see how this is going to go well for him. Furthermore, I don’t even get how this is art, it’s just BS word soup to justify ill-conceived ideas, and I’m an artist, so it’s not like I’m reactive simply because I don’t understand art.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414969",
"author": "pt",
"timestamp": "2011-07-08T23:37:17",
"content": "what was the expectation of privacy using apple’s “public” laptops to check your email for free in their store which they record you?apple doesn’t have a terms of use when you use their computers for free in the store for checking email or surfing around.this is what a court will decide and maybe a jury if it goes that far.in nyc there are thousands of people who run in to the apple store(s) per day just to check email or surf the web for free.each night apple wipes the machines.“art” sometimes brings questions and social norms that are undefined or murky to light, regardless of how some might feel about this – the artist did just that …it will be interesting to see what happens with this, what laws may or may have not been broken and if the secret service was really needed for something like this?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414971",
"author": "Renee",
"timestamp": "2011-07-08T23:44:40",
"content": "This isn’t undefined, nor is it murky. Look it up yourself. Accessibility to the public does not equal “public” as understood by both tort and common law.Was my bathroom example oblivious to people? Really think it’s legal for someone to walk into your stall in a public restroom and start taking pictures?No, obviously, because right to privacy is circumstantial and depends on more than whether or not the public can enter a location.Also, “free” access means little because public restrooms are free too. Does that mean you get to do whatever you want?As for terms of use, it’s a private establishment. Just because they let you do something doesn’t mean you get to keep doing it when you’re told to stop.Stores totally have the right to kick your ass out for pretty much whatever they want. “Terms of use” in this case is the reasonable knowledge that you can’t just go around doing whatever you want in a private establishment.Do you really need to be told that?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414974",
"author": "Mike",
"timestamp": "2011-07-08T23:47:29",
"content": "Everyone who was wrong about the law in the previous post can apologize now :-b",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414975",
"author": "cde",
"timestamp": "2011-07-08T23:48:05",
"content": "No Invasion of Privacy. People are out in a public space, with no reasonable expectation of privacy. They are already being filmed by security cameras for one.No personal information is being taken (Name, Age, Address, SSN, etc).The pictures are not defaming them in any manner (and even if some did for example, show someone picking their nose, they did it in public, so no invasion of privacy or that the picture is insulting).The pictures are not of a provocative nature or purpose (No intentional downblousing or anything.)So there is no privacy issues. Hell, the camera in the laptops and displays have a hardwired led that turns on when power is applied to the camera. No way of disabling it short of soldering it off or physically damaging it. People had notice that it was happening.As far as the computer permission issues, Apple store computers are intentionally set up to allow programs other than those installed by apple to run. Same with the ipads and iphones. This allows people to test the computer out fully. Every night, apple resets the laptop to its original state (I believe they use Deep Freeze). So permission to install is implicit. Permission to use the network is implicit. Apple’s Tech and Legal departments either set it up this way on purpose, or never accounted for this type of usage when deciding to allow people the right to run programs other than the 10 or 20 applications in the dashboard.This is not the same as if someone installed a key logger or screen capture software. No intent to harm any party was involved. (Hey, banks get away scott-free from liability when they foreclose on the wrong house, or have house repo teams screw up and empty the wrong house, BECAUSE of lack of malicious intent.)What should happen here: Apple and/or the state has the guy promise to knock this off without explicit permission, and then Apple makes changes in their policies to prevent this (computer controls to prevent unsigned applications from running) and the state makes some new laws banning this in the future.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414978",
"author": "cde",
"timestamp": "2011-07-08T23:59:04",
"content": "@ Renee because people in a bathroom have a “”reasonable expectation of privacy””, you know, a legal standard. And even then, courts have different opinions of that. A public bathroom stall might have a reasonable expectation of privacy, but not outside of the stalls. It would not be a dry and cut case if a store put a camera in the public area of a bathroom if it did not point at the stalls (because the argument is that the communal areas like the hand dryer and sinks are open to plain sight). Same thing as a private car being considered in public (indecent exposure).And places of public accommodation, like Apple stores, are considered public, even if they are private property. There is Reasonable Expectation of Privacy in a huge public crowd.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414979",
"author": "James",
"timestamp": "2011-07-08T23:59:16",
"content": "As usual, a complete over-reaction from our US friends to a minor-league harmless stunt in a public place. Dear god what is the world coming to?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414983",
"author": "noOne",
"timestamp": "2011-07-09T00:07:07",
"content": "going to get him to work for them… ha next step smart phone",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414984",
"author": "xeracy",
"timestamp": "2011-07-09T00:07:38",
"content": "I would not expect my privacy to be secured on any computer FREELY ACCESSIBLE TO THE PUBLIC (not a public computer, but one that a lot of people use in a day). If I even stand in front of a computer, I have to assume that its possible that it is recording me. On top of this, Kyle did his due diligence in asking the security guard about their photography policy. His script did nothing nefarious or illegal, and I believe he is being made an example of…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414985",
"author": "Renee",
"timestamp": "2011-07-09T00:10:59",
"content": "cde: @ Renee because people in a bathroom have a “”reasonable expectation of privacy””, you know, a legal standard.No duh, why do you think I brought it up? At least the ball is rolling now. So, the next question is, does checking a computer in a private establishment count as circumstances that grant a reasonable expectation of privacy?Since you can check private correspondence and bank records then yes, I believe it does. Why? Because that precedent already exists for public ATM’s.I would certainly be pleased if people brought up compelling reasons why it’s not the case. But so far 99% of responses to this have been “PUBLIC SPACE IT’S LEGIT LOLOLOLOL.”You could even make the point that this camera is specifically set up to focus on individuals as opposed to just running as people walk by. There have been cases where photographers were reprimanded for taking isolated, individual pictures of people. If you were on the street and someone started taking pictures of you, specifically of you, you have the right to tell them to buzz off.So this is very much so legally questionable.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414986",
"author": "M4CGYV3R",
"timestamp": "2011-07-09T00:15:40",
"content": "This is fucking stupid. He didn’t invade anyone’s privacy. He didn’t commit any fraudulent acts either-under any definition.The people don’t own the computers that took their picture, and they were reasonably to know they were under video surveillance because – duh – Apple stores have security cameras… There was also the simple fact of the little “Camera On” light that any half-brain using a plastiMac can plainly see.The images captured were used within accordance of fair use, tastefully, and there was no nefarious data mining operation behind the scenes. Leave this guy the fuck alone, or give him an award for spawning a good ethics debate. He’s not a criminal, not even a little bit.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414988",
"author": "sariel",
"timestamp": "2011-07-09T00:17:59",
"content": "@KyleLMAO! btw love the graphic on the pic. I hate it when people try to do something new that pushes the bounds of art and law without checking what the laws really are. it’s seriously not that hard to get on a law based forum and ask a licensed lawyer if you’ll go to “pound-me-in-the-ass” prison for doing something this stupid. I feel zero compassion for this guy. he could have blown someones cover that was put in witness protection or worse! Next time, leave the invasion of privacy to Big Brother.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414991",
"author": "Renee",
"timestamp": "2011-07-09T00:23:12",
"content": "This reminds me a lot of a great quote that my favorite phot prof said:“Art is great in asking more questions than it can answer but there’s no point in asking questions that have already been answered”Want to be artsy-fartsy and “push boundaries?” Maybe check to see if they’ve already been defined. Otherwise it’s just lazy as hell and it’s just using “art” to rationalize a poorly constructed concept.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414992",
"author": "Neagle",
"timestamp": "2011-07-09T00:24:24",
"content": "Just a tip from my own experiences. If any law enforcement agent, the the US, takes anything of your property insist on a receipt for each and every item taken into custody.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414993",
"author": "M4CGYV3R",
"timestamp": "2011-07-09T00:24:25",
"content": "@Renee:Better go arrest this dude/chick…http://4.bp.blogspot.com/_HS-OqmYblqs/TJ0dhVjDDvI/AAAAAAAACe0/HyOs661Z08E/s1600/public+bathroom2.jpgand this guy/girl too…http://www.bathroomremodelings.org/wp-content/uploads/2011/03/Bathroom-Stalls.jpgand him/her…http://www.bathroomremodelings.org/wp-content/uploads/2011/02/Bathroom-Stalls.jpgThe location has very little to do with the the reasonable expectation of privacy. It is entirely subjective. Many people are secure enough with photos of themselves being taken that they don’t need to follow these idiots into the inevitable petty fucking lawsuits that follow.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414995",
"author": "zacdee316",
"timestamp": "2011-07-09T00:28:20",
"content": "I don’t see what the big deal is? All he did was use hardware that was accessed by the public to take pictures. Customers expose themselves to video surveillance every time they go into a store with cameras. No one ever sees a lawsuit there. And what about the cameras that can be viewed using google? I’m sure many people have taken screen shots of people on those cams without their knowledge.The way I look at it, if your in public expect your picture to be taken and know that it may end up on the internet.So FUCK OFF Uncle Sam, go play with your nephew at camp.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414996",
"author": "pt",
"timestamp": "2011-07-09T00:28:31",
"content": "for all the folks who are practically calling for his execution – his stuff was taken but he was not arrested, if it was *clear* what laws were broken he would have been arrested on the spot right?i’m going to make a prediction, he will not go to jail for this and will likely just need to sign a statement saying he will not do it again and apple will have a new policy on this.just a guess…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414999",
"author": "jordan",
"timestamp": "2011-07-09T00:34:51",
"content": "if you genuinely aren’t bothered by someone taking your picture when you do not expect it, you’re weird in my opinion.everyone knows there are security cameras in stores. nobody knows that a random computer in the store is recording your picture and putting it on the internet.I’m pretty sure that in tv and movies, most of the time people recorded in them have to sign a release to make it ok to publish their exact likeness.this kid basically did the tv/movie part (visual art) without the release or consent or indication that the people were on camera.an LED on the computer is a terrible defense. If the camera LED was on and there wasnt any obvious recording software, you would probably assume something was wonky with that computer, not that it was recording you and putting your picture online.i hope this guy is terrified and gets in a lot of trouble with fines and service and reputation, but i don’t hope he goes to jail.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415000",
"author": "Will Floyd-Jones",
"timestamp": "2011-07-09T00:38:02",
"content": "Morality and legality aside, what this guy did was pretty impressive. Be glad he didn’t steal anything of more dire importance; an art project is quite a bit more innocuous than credit card theft.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415004",
"author": "Max",
"timestamp": "2011-07-09T00:48:14",
"content": "Alongside the whole “They’re in public so they have no expectation of privacy.” thought, what about this:Random Person On Twitter:@kcimc YES! what about “surprise dude” in turban?Kyle’s Response:@gleuch surprise sikh/apple technician wasn’t in public, so i won’t post that pic w/out his permission :) leads at cupertino are welcome!So he has taken pictures of someone who HAS an expectation of privacy and obviously either disclosed that there was something remarkable (in the literal sense) about the picture, or he has shown other people the picture itself.Either way, he was taking pictures of a person who was not in public and reviewing them.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415006",
"author": "M4CGYV3R",
"timestamp": "2011-07-09T00:53:10",
"content": "“everyone knows there are security cameras in stores. nobody knows that a random computer in the store is recording your picture and putting it on the internet.”Um, hello? How do you think security cameras work, exactly? Do you really think most people in this day and age are still using long-run VHS or something? No, of course not.Most of the security cameras/storage these days work in exactly the same way as any camcorder, cell phone camera or webcam. They are stored web-accessible on insecure networks (Remember #antisec much?) or on computers in the back room which untrustworthy people that you will never know about may have access to. Beyond that, the owner of the property can do whatever they like with the footage, including posting it to the internet.Anywhere there are security cameras, you should have absolutely no expectation of the right to privacy. Period.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415012",
"author": "ffffffffff",
"timestamp": "2011-07-09T01:04:34",
"content": "I actually don’t care about the legalities here. He went out of the way to be a douche and he deserves a good scare. I hope the EFF stays out of this one and focuses their efforts on more important things.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415015",
"author": "ffffffffff",
"timestamp": "2011-07-09T01:07:11",
"content": "To elaborate, people shouldn’t expect the EFF to be their get-out-of-jail-free card when they want to start trouble.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415016",
"author": "Renee",
"timestamp": "2011-07-09T01:18:19",
"content": "@ ptSomething like this would fall under the category of a tort, not a crime. Are you immediately arrested when you get pulled over for speeding? If you run through a toll do the police come and arrest you?I thought it was obvious that breaking the law does not constitute being arrested.I’m not exactly calling for an execution but the lack of clear legal thinking by some fellow hackers/makers is troubling.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415021",
"author": "dostoevsky",
"timestamp": "2011-07-09T01:35:21",
"content": "His punishment should be working at the genius bar for a week.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415022",
"author": "whizdumb",
"timestamp": "2011-07-09T01:42:06",
"content": "This artist has gotten so much publicity he surely will not have a problem getting gallery shows.Anyway, to the more serious matter at hand, doesn’t it just seem slightly ridiculous that the secret service was brought in. I’m surprised no one has really mentioned that yet. This isn’t some police force we are talking about this is the government. Is this really something they should be involved in?Also the artist had prior permission from the apple store employees to take pictures of people in the store. This is will probably cause trouble for Apple.I think the Artist should just get a slap on the wrist it was completely innocent, capturing simple moments in time, nothing explicit. The artist was experimenting and nothing more, he wasn’t harming anyone. He was doing what you hardware hackers do, prototyping.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415025",
"author": "anon",
"timestamp": "2011-07-09T01:50:51",
"content": "The linked BBC article stated that the feds are investigating under 18 USC 1030, so this really doesn’t have to do with invasion of privacy aspect of the photos, at least from a legal standpoint. The invasion of privacy aspect of the photos is a civil matter and I wouldn’t be surprised to see a suit or two by the photographed individuals.18 USC 1030 is all about unauthorized access to computers. A quick breakdown…Were the laptops in question protected by the statute?– The laptops in question were ‘protected’ as defined in (e)(2)(B) ….” used in or affecting interstate or foreign commerce or communication.”Don’t want to get into a con law debate here but by current interpretation of the commerce clause I’m sure this qualifies. If you doubt that, then you need to read up on commerce clause jurisprudence (can’t debate if you don’t educate yourself). The federal government’s broad powers to regulate damn near every thing comes from the commerce clause. It is a logically absurd extension of the terms of the commerce clause, but clearly within the bounds as interpreted by the Court since the New Deal Era.Was there a violation of 18 USC 1030?– under (a)(2)(C), whoever “intentionally accesses a computer without authorization or exceeds authorized access, and thereby obtains—information from any protected computer” has violated the statute.He obtained information from the protected computer — the photos.The legal questions will revolve around his access to the laptops.Was his access unauthorized?-If he was polling the laptops remotely and pulling the photos then that would be unauthorized access, but that doesn’t appear to be how the software was operating. The feds might argue that his uploading of photos is some sort of unauthorized access as well (I don’t know about that one).-His physical access to the laptop was authorized.Did he exceed his authorized access?– THIS is probably going to be the legal question that needs to be answered. I don’t feel like commenting, as I don’t know all the facts and this is a fact intensive question. You can make your own mind up.Did he INTENTIONALLY exceed authority/access without authority?– Congress needs to write clearer statutes. We (citizens) need to elect better representatives. Gonna come down to statutory interpretation, but ‘intentionally’ usually means intending to commit the physical act, not necessarily meaning to commit the crime (see ‘knowingly’).Anyway, tired of writing. I actually don’t care what happens to him one way or the other. Lesson here is when you are doing something questionable like this, seek some legal advice. At the bare minimum read up on the relevant statutes. But wanted to point the debate/convo here in the right direction.btw if anyone here is a law student, you might think about this as a law review topic. Could turn out to be interesting if they pursue prosecution of this guy.–",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415030",
"author": "Renee",
"timestamp": "2011-07-09T01:57:51",
"content": "Another thing to keep in mind is that this is the new job of the Secret Service, they do more than just protect the president. It’s their job to investigate electronic crimes.So it’s not like it’s an overly harsh attack on some poor artist. It’s just a matter of who has what jurisdiction.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415034",
"author": "anon",
"timestamp": "2011-07-09T02:01:14",
"content": "@Renee Exactly. Once again, answers lie in the statue.18USC1030(d)(1) The United States Secret Service shall, in addition to any other agency having such authority, have the authority to investigate offenses under this section.Remember people. Congress passes this laws. We elect Congress. We don’t pay attention to what congress does for the most part. That needs to change.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415055",
"author": "D_",
"timestamp": "2011-07-09T03:43:28",
"content": "Chances are good those that committed the fraud that wrecked the world economy used computers. Certainly not reading any reports that they may be facing 20 years in prison. Yes this investigation is going beyond the intent of legislation passed in the be very afraid USA post 9/11. Specking of legislation the White House, and Congress is working on new anti hacking legislationhttp://technolog.msnbc.msn.com/_news/2011/07/08/7043349-us-official-says-pre-infected-computer-tech-entering-country. M4CGYV3R is engaging in comparing apples to oranges when pointing us to the rest room photos, photos in that no one could be recognized as the subject of a photo.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415056",
"author": "Bobby J",
"timestamp": "2011-07-09T03:51:22",
"content": "I can’t believe anyone thought this was a good idea. It was going to get negative attention no matter what. DB “artists” don’t get to decide what is legal, moral, right, or unobtrusive.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415058",
"author": "Static",
"timestamp": "2011-07-09T03:55:04",
"content": "The issue isn’t one of privacy (At least as far as the USSS is concerned). It falls clearly under 18USC1030 (Cornell comes up in Google, and is a pretty good reference for raw material).Unfortunately, this guy is easily nailed under 18USC 1030. It remains to be seen what the prosecutor is going to do with this, but ask yourself a couple of questions (I don’t have the answers, but these are questions that should be asked):How would the crime be different if the “artist” had collected the pictures with illicit intent?How would the crime be different if the “artist” had collected pictures that the subjects clearly would not have wanted taken?How would the crime be different if the “artist” had posted the pictures publicly or kept the pictures strictly for personal use?How would the crime be different if the “artist” had accidentally captured sensitive information?Some answers would make the “prank” into a clear crime, sure. The big question then becomes when do we draw the line? Do we have any reason to believe this was or wasn’t a test run for the gathering of sensitive information (of whatever type)?Dunno… I’m kinda surprised that this guy thought this was an “ok” thing to do, in the first place. I really don’t think any harm was committed, beyond the computer cycle theft, but that theft does warrant an investigation (not necessarily charges).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415063",
"author": "blue carbuncle",
"timestamp": "2011-07-09T04:00:54",
"content": "“mmmm. The tears are so sweet….” Can’t wait to see the pic the intake computer gets of him lol.Perhaps if Kyle hadn’t been such an ass about it, I might be more sympathetic.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415081",
"author": "Quin",
"timestamp": "2011-07-09T04:30:58",
"content": "I will say it again, I doubt he was arrested for ‘taking’ the pictures. His Twitter feed asked about federal code 18 section 1030, computer crimes. If the Apple store did not actually agree to his stunt, then he used their computers without permission; a crime.Or maybe the Secret Service is investigating civil crimes like infringing on right of publicity. But I really doubt that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415084",
"author": "password",
"timestamp": "2011-07-09T04:36:31",
"content": "note to self: never demonstrate to the public how easy it is to destroy their false feeling of security.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415086",
"author": "Krew",
"timestamp": "2011-07-09T04:43:53",
"content": "this is interesting why should the government get involved; if anything they should show up to apple’s doorstep it is their computer their responsibility to keep them safe.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415088",
"author": "anti-fanboi",
"timestamp": "2011-07-09T04:49:23",
"content": "@KrewApple is infallible! Didn’t you get the memo?I do wonder how many would condemn him if it wasn’t an Apple issue.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415094",
"author": "Morbious Stone",
"timestamp": "2011-07-09T05:00:12",
"content": "Well then Why didn’t they rightly convict Google For Stealing all your info by deliberately auto hacking wifi with specialized equipment pretending to just roll around taking pics 4 Google street view/map etc",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415101",
"author": "Krew",
"timestamp": "2011-07-09T05:10:42",
"content": "Also seeing people posting about the public thing; well first of all if you watch some youtube people like IJUstine where they go to the apple store film with the laptop webcam and load up to youtube; all those people should be in leagal trouble too???You are allowed to take photos of people in public places with exceptions so there no problem; its just some people don’t understand the world of computers fear it and try to get rid of it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415103",
"author": "beeboue",
"timestamp": "2011-07-09T05:12:44",
"content": "“By the way, the gentleman seen above isn’t [Kyle]”lol. Yeah. kinda guessed that.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,145.583884
|
||
https://hackaday.com/2011/07/08/voice-recognition-system-controls-everything-hopefully-wont-kill-us/
|
Voice Recognition System Controls Everything, Hopefully Won’t Kill Us.
|
Brian Benchoff
|
[
"home hacks",
"Software Development"
] |
[
"android@home",
"home automation",
"voice control"
] |
[Aaron Bitler] and [Bud Townsend] have been working a
natural user system
that is, in their own words, “what android@home should have been.”
The
video
they posted is pretty impressive. The automation system responds to voice and can control appliances, ‘throw a party’, and provide a user with their location. This is just the foundation of a system that can be built upon – developers can easily integrate a microphone and speaker into a device so it can connect to the system’s server. Apps, too, are pretty extensible – they’re registered on the server with meta tags that provide a wealth of data to be manipulated. It’s a very, very cool project that we really want to try out.
After seeing the
video
, the first thought was to go through every episode of Star Trek collecting recordings of
[Majel Barrett’s]
speech.
[Douglas Rain]
is still alive (and still sounds like HAL), but we’d probably go with GLaDOS. If our house is going to kill us anyway, we’ll go with the one that will give us some blog cred.
| 8
| 8
|
[
{
"comment_id": "414938",
"author": "xorpunk",
"timestamp": "2011-07-08T22:35:36",
"content": "this should be entertaining..I’d like to announce that I’ve perfected automation with square wheels..on a related note..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415032",
"author": "Gray Simpson",
"timestamp": "2011-07-09T01:58:45",
"content": "I sure hope to hell they open source this, a project similar to this has been on my todo list for over a year (The Pulaski command module.)http://gqo.be/c?p=117",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415060",
"author": "Bud So Townsend",
"timestamp": "2011-07-09T03:57:14",
"content": "“I sure hope to hell they open source this”. You don’t have to hope ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415065",
"author": "Aaron Bitler",
"timestamp": "2011-07-09T04:08:06",
"content": "For more information about this project check out crunchylogistics.com, or e-mailinfo@crunchylogistics.com",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415107",
"author": "AP",
"timestamp": "2011-07-09T05:27:30",
"content": "Now if we can just get Paul Bettany (JARVIS from Iron Man) to do the voice work…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415180",
"author": "Mad Max",
"timestamp": "2011-07-09T11:28:14",
"content": "This may or may not become yet something truly interesting – with all due respect, I’m not knocked aback by a piece of voice recognition software. Also, ye olde X10 stuff reacted faster than that to commands, and we thought _that_ was horribly slow…In the end, the problem of current “smart homes” is that they’re anything but. A few logic interlocks and “scenarios” (aka glorified batch commands) do not warrant being called “smart”. And that’s unlikely to change in my opinion as long as homes do not actually employ an AI that’s truly aware of what is happening inside. Contextually aware, like a human being. And we’re nowhere near there, afaik.But hey, I’d be glad to be proven wrong (I think…?) Either that, or scared…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415341",
"author": "Aaron Bitler",
"timestamp": "2011-07-09T20:58:28",
"content": "@MadMaxI see where you are coming from, but I can assure you, that when all said and done, our NUS will be well beyond glorified batch commands. It will take some time, but we can do it. Thanks for your input!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416244",
"author": "CosmicVoyager",
"timestamp": "2011-07-11T19:05:21",
"content": "There is no indication that this is a voice recognition system, only a speech recognition system.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,145.794021
|
||
https://hackaday.com/2011/07/08/chibimo-an-avr-based-usb-display/
|
ChibiMo – An AVR-based USB Display
|
Mike Nathan
|
[
"Arduino Hacks"
] |
[
"arduino",
"ChibiMo",
"display",
"lcd",
"usb"
] |
[Ko] wanted to add an extra monitor to his computer, but he wasn’t looking for something huge that would sit atop his desk – he desired something smaller, much smaller.
His ChibiMo mini USB monitor
is a neat little creation that lets you extend or mirror your Windows desktop onto a tiny 128×64 pixel LCD panel. At first glance you might think that it is too small to be useful, but it is recognized in Windows in the same fashion as any standard monitor. This means that it would be quite easy to load system monitoring software solely on the LCD panel, keeping the clutter off of your main display.
The display is wired to an Arduino
like any other standard shield
, and is connected to his computer via a USB cable. Once the ChibiMo sketch is uploaded to the Arduino, the display driver needs to be loaded on the PC. This allows you to tweak the ChibiMo’s display settings in Windows’ display manager.
It’s a great concept, one we would love to see explored further. As of right now, the ChibiMo is only supported on x86 versions of Windows XP, and we weren’t able to find source links anywhere on his site. Perhaps there are some talented members of our community who would be interested in taking a whack at it…
| 17
| 17
|
[
{
"comment_id": "414892",
"author": "sariel",
"timestamp": "2011-07-08T20:48:32",
"content": "thats great! but for the price he paid for the arduino and lcd plus the time he used in creating it, he could have bought a small 4inch usb lcd off ebay and saved himself the trouble. but i still love the hack. this would be way cooler if he used a VFD.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414922",
"author": "dmcbeing",
"timestamp": "2011-07-08T21:38:29",
"content": "I didn’t know you could do pwm on an lcd display :P.Kudos for the hack.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414932",
"author": "andres",
"timestamp": "2011-07-08T21:54:41",
"content": "@sariel4 inch usb lcd? for around $50? clearly my ebay skills fail. have any examples?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414973",
"author": "Michael",
"timestamp": "2011-07-08T23:45:29",
"content": "*Hint: Hit the Japanese link in the upper right corner, then scroll down a little for a video.I need to make this, maybe port the code to one of the PICs I have lying around….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415002",
"author": "dave",
"timestamp": "2011-07-09T00:44:45",
"content": "This is the same resolution that my TRS-80 model 1 had.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415057",
"author": "NishaKitty",
"timestamp": "2011-07-09T03:54:29",
"content": "Anything that displays anime/manga pictures is the best ;p",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415064",
"author": "Zaku",
"timestamp": "2011-07-09T04:05:01",
"content": "Anyone care to have a look at the code please? I wanted to have it worked on a MEGA which is the only Arduino I have. Is it possible to adopt the code for MEGA? Thanks in advance.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415075",
"author": "NishaKitty",
"timestamp": "2011-07-09T04:24:41",
"content": "Video site requires registration >.<",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415090",
"author": "NishaKitty",
"timestamp": "2011-07-09T04:51:53",
"content": "http://www.mediafire.com/?c889ac1p45lg842Video made easy if anyone wants to watch it without the effort I had to go through ;p",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415098",
"author": "drojf",
"timestamp": "2011-07-09T05:06:01",
"content": "If anyone is wondering, i think the first picture is from the anime ‘Katanagatari’ (http://brianosaure.com/wp-content/uploads/2011/01/Katanagatari3.jpg)The second picture (on his website) is of Anzu from ‘Hanamaru Kindergarten’http://www.japanator.com/elephant/ul/13142-620x-Hanamaru6.jpg",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415135",
"author": "bothersaidpooh",
"timestamp": "2011-07-09T07:05:07",
"content": "Pretty ingenious, very similar concept to sprite_tm’s digital picture frame hack.Although the latter was never designed to act as a second display though.Next step, phase sequential colour via RGB LED backlighting.The panel ought to support writing at higher speed than designed, you will get some ghosting but this might not be a problem at ambient temperature.One of the suggestions for making large area E-ink screens for outdoor advertising was to preheat the panel above 15 Celsius using a flat panel heater but only before changing the content so it could sit there for weeks if need be before being rewritten.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415328",
"author": "tim",
"timestamp": "2011-07-09T20:13:22",
"content": "please, source the driver",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415342",
"author": "Nardella",
"timestamp": "2011-07-09T20:59:09",
"content": "@bothersaidpoohDo you have any examples of someone making a colour screen out of a B/W LCD display?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415347",
"author": "Nardella",
"timestamp": "2011-07-09T21:16:24",
"content": "Leaving another comment because I don’t know of an easier way to subscribe to comment notifications.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415919",
"author": "Anon",
"timestamp": "2011-07-11T03:03:50",
"content": "@NardellaI saw a mod of a TI-83 that had a RGB backlight that had 8-color support on it. Looking on Google turned up no signs of that site (or pictures) anymore.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "466077",
"author": "bothersaidpooh",
"timestamp": "2011-09-28T06:33:27",
"content": "@NardellaYes, this technique was used on some early JVC camcorders because the technology of the time wasn’t up to making colour LCDs in viewfinder size.Interestingly there was an article in Practical Wireless circa 1960 detailing a way to make a “pseudo-colour” CRT display using a B/W CRT with a switching filter of some kind.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "479354",
"author": "Stryker",
"timestamp": "2011-10-13T18:37:19",
"content": "Hey, I’m pretty interested in getting something like what sariel said. Anyone know where I could get one?",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,145.845578
|
||
https://hackaday.com/2011/07/08/on-dash-g-meter-project-is-another-way-to-distract-drivers/
|
On-dash G-meter Project Is Another Way To Distract Drivers
|
Mike Szczys
|
[
"Transportation Hacks"
] |
[
"accelerometer",
"g-meter",
"sx28"
] |
[PJ Allen] built
a meter to display gravitation force
in an easy to read way. Good thing it’s easy to read, because he’s added it to the dashboard of his car. That way he gets instant feedback when he puts the pedal to the metal. We’re hoping this encourages safe driving practices. But since it appears that not only is he watching the meter while he drives, he’s also
holding a camera at the same time
, we’d say this makes him a menace on the road.
But we do like the hardware concept. He used five Red/Green LEDs to show what the accelerometer is sensing. A green display reflects acceleration, while a red display shows deceleration. Inside the project box you’ll find a Parallax 2-axis accelerometer and an SX28 micrcontroller. This is an
8-bit Parallax chip family that was discontinued
a few years back.
| 18
| 18
|
[
{
"comment_id": "414827",
"author": "Alwar",
"timestamp": "2011-07-08T18:37:25",
"content": "I would change the blinking led by fade in/out to show more accuracy…Caution with this man in the road xD",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414831",
"author": "Aaron",
"timestamp": "2011-07-08T18:44:27",
"content": "I’ve been thinking about a “speed bracket” that’d read current speed off the OBD-II port and compare it with a speed setting adjustable via rotary encoder; it’d allow for a five-miles-an-hour range either side of the set speed, and light up a yellow LED for “too slow” and a red one for “too fast”.I probably won’t build it, because I don’t do enough highway driving to make it really useful, but it does seem like it could be handy for someone who did. (Unlike the project in the OP, it’d also serve a useful purpose rather than being purely a distraction, if a nifty one, for the driver.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414832",
"author": "biozz",
"timestamp": "2011-07-08T18:45:13",
"content": "lol i have one of these on my car computerpointless as it only goes up to 1G and my tires go up to 2G each XDfun at a track day but if your making more than a half G turn on the road you need to slow down XDplus im more worried about my limiter and speed going around a track … i can tell the G force well enough by how far my face distorts XD",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414833",
"author": "biozz",
"timestamp": "2011-07-08T18:47:01",
"content": "only goes up to 0.5g*sorry i had to recheck it, HaD needs an edit button",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414848",
"author": "Aaron",
"timestamp": "2011-07-08T19:01:32",
"content": "biozz: wouldn’t you need to mount the accelerometer with its axis perpendicular to the car’s, in order to measure the turning force as you describe? This one appears to be mounted parallel — judging by the “gee job” reference I get the impression it’s purely for making his friends go “wow, what’s that?”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414873",
"author": "jesse",
"timestamp": "2011-07-08T20:05:48",
"content": "lol @biozz and his “2G each” tire crapI’d love to see you pull a 2G corner.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414886",
"author": "AP",
"timestamp": "2011-07-08T20:32:52",
"content": "I was kind of hooping he’d just printed out a sticker that read “9.8” and stuck it on his dash.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414894",
"author": "Roman Dulgarov",
"timestamp": "2011-07-08T20:54:16",
"content": "@ jesse: lol agree, and how wide is his wheelbase?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414897",
"author": "Haku",
"timestamp": "2011-07-08T20:57:13",
"content": "I remember a Top Gear episode from a while back, Clarkson was driving a car with a 2-axis G meter built in, he compared the car to rivaling Sega rather than other cars as he tried as hard as he could to get the G meter display to max out whilst wildly swerving left & right on the private driving track.Here it is, Nissan Skyline GTR:http://www.youtube.com/watch?v=bE87CxicR7w",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414902",
"author": "pogyhauler",
"timestamp": "2011-07-08T21:08:20",
"content": "G meter? in a car? for the Driver?Is this supposed to tell him something his ass doesn’t already know?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414946",
"author": "Microguy",
"timestamp": "2011-07-08T22:54:36",
"content": "If you’re going to do something like this, make it a heads up display! Man, just mount it on the dash in front you, and it’ll reflect off the windshield. Mine is blank, and I have a hard enough time keeping the sun from blinding me!But I guess, if he’s going to be fascinated by looking at the blinky lights, it won’t matter.. Kinda like people in the grocery store that still can’t push the cart and talk on the phone at the same time. It’s hands free, but it doesn’t matter, they’re still staring off into space….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414947",
"author": "Pete",
"timestamp": "2011-07-08T22:55:41",
"content": "And which two bodies is this device measuring the “gravitation force” of exactly…?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414957",
"author": "Mike",
"timestamp": "2011-07-08T23:22:30",
"content": "@Pete: Wrong g.http://en.wikipedia.org/wiki/G-force",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415024",
"author": "Pete",
"timestamp": "2011-07-09T01:46:48",
"content": "@Mike: That is the point I was making.http://en.wikipedia.org/wiki/Gravitation",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415091",
"author": "Hirudinea",
"timestamp": "2011-07-09T04:53:50",
"content": "Just two comments, first change the display from LED to an analogue dial, second, points off for using Neil Diamond music in your video. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415273",
"author": "M H",
"timestamp": "2011-07-09T17:23:07",
"content": "Seems like this could conceivably be useful to help train drivers to avoid jackrabbit starts and hard breaking. (Which can make passengers prone to motion sickness feel queezy, and are claimed to be harder on cars.)However the indicators would be more useful if it gave red for strong acceleration or deceleration (and green or no indicator for mild, or perhaps yellow for borderline and red for the lead foot).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416385",
"author": "Dan Fruzzetti",
"timestamp": "2011-07-12T03:19:56",
"content": "He should be more responsible and ‘fake’ acceleration for the photo by going up a hilly onramp where he might not kill anyone’s kids.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417827",
"author": "PJ Allen",
"timestamp": "2011-07-15T04:33:46",
"content": "Dan, you speed everytime you drive your car, so spare me the hypocrisy. “Killing kids”, that’s wasted, contemptible. Thanks, you’re a saint. ***Most everyone else, seriously; you don’t stare at the “blinky lights”, unless you stare at your speedometer or, uh-oh, your CD display, or whetever else you have going on in your auto. It’s there, if you note it at all it’s in your peripheral vision. *** Anyone wants analog, HUD, green instead,… go ahead, knock yourself out, I’m not stopping you.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,145.900878
|
||
https://hackaday.com/2011/07/08/phillip-torrone-on-why-all-makers-should-learn-chinese/
|
[Phillip Torrone] On Why All Makers Should Learn Chinese
|
Mike Nathan
|
[
"News",
"Rants"
] |
[
"chinese",
"Makers",
"phillip torrone"
] |
A while ago when he was working in China, [Phillip Torrone] started learning Mandarin Chinese in order to help him communicate more efficiently with his peers. Unfortunately, once he returned to the US, he slowly started forgetting most of what he had learned. He
recently wrote a piece over at Make:
explaining why he’s attempting to learn Mandarin once again, and why you as a maker should consider doing the same.
He starts off citing the economic trends which indicate that China’s global GDP share will likely bypass that of the US in a few short years. While the stats might be a bit boring he says, the rise of a new global superpower is nothing to shrug off.
Economic changes aside, he has found that through his workings at Adafruit and other tech companies, he is frequently being exposed to more and more Chinese on a daily basis. Between emails with suppliers, data sheets, and schematics, he says that learning Chinese is a must for makers.
What do you think? Do any of you full-time makers and hackers see the same trend in your jobs? Let us know in the comments.
| 135
| 50
|
[
{
"comment_id": "414770",
"author": "mike bradley",
"timestamp": "2011-07-08T17:21:06",
"content": "Just my 2 cents, english is spoken in so many other places around the world in business, and if chineese want to manufacture my products, they can learn english. I will however try my best to learn theirs as well out of respect.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414774",
"author": "notsureonthis",
"timestamp": "2011-07-08T17:27:14",
"content": "Wouldn’t it be better for rebuilding America to translate the paper work you need to English with a small number of people learning Chinese then to adopt another countries language as the standard? Are we rebuilding or redesigning ?I have nothing against china but I still go out of my way to get things done in the US if I can. IMHO you dont rebuild your country by selling out to another. You need to take pride in your own country to do that.You could also argue German is a good choice. But again are we rebuilding Germany, China, or America.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414776",
"author": "Will",
"timestamp": "2011-07-08T17:28:28",
"content": "In the 80’s we were supposed to learn Japanese to be able to work with our new economic overlords.I’ll stick with English. (And Latin and Attic Greek.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414777",
"author": "Hackerspacer",
"timestamp": "2011-07-08T17:29:18",
"content": "We should learn Indian too. They are big as well.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414779",
"author": "Roman Dulgarov",
"timestamp": "2011-07-08T17:31:37",
"content": "Yes, I have to agree, no matter where the trend leads, knowing Chinese will be use-full. And to recommend something, check out “Rosetta Stone” language learning software :) best software in the world.http://www.rosettastone.com/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414780",
"author": "adam outler",
"timestamp": "2011-07-08T17:31:49",
"content": "Try looking up a video on jtag for ARM… most of the info is in chinese. Try finding a video on SwingWorker…. Again, all in chinese.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414781",
"author": "MattQ",
"timestamp": "2011-07-08T17:32:13",
"content": "I encourage everyone to learn another language, I’ve been teaching myself German with some success, and it’s been really enjoyable. That said, international business is still largely done in English. The problem with learning Chinese, is that it’s only really spoken in China. English spread across the globe a couple hundred years ago as a result of imperialism. Because English is the de facto language of business, I don’t see hobbyists or hackers needing to learn it. But, from a business perspective, the Chinese market is exploding, so if you plan on going from the hacker/hobbyist world to selling around the world, learning Chinese might be very useful, just try to understand what your market is, and who your customers will likely be.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414783",
"author": "Max",
"timestamp": "2011-07-08T17:35:06",
"content": "So far, people all around the world are still learning English like crazy, and while there’s a drift towards learning Chinese in business circles, there’s a much larger culturally-fueled drift towards learning English. Everyone does it. Even the Chinese.Chinese may be the language with the most speakers worldwide, but if anyone is on vacation in any country they don’t know the language of, they’ll try English before they try Chinese. Why? Because nobody learns Chinese.So, IMHO, in the long run Chinese will die out just like all other languages except for different kinds of English. (Don’t mistake my opinion for laziness to learn. English is my fourth language, I just really think that’s what’s gonna happen.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414784",
"author": "Geoff",
"timestamp": "2011-07-08T17:35:39",
"content": "don’t be so stuck up. the reason why so many people speak english in the first place is because it used to be great to do business with the US.maybe in a couple decades english will become what french is nowadays: a language some people outside english-speaking countries speak just because they like it, not because it is important for business.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414785",
"author": "Joe Wasser",
"timestamp": "2011-07-08T17:35:43",
"content": "I have worked in China twice, 3 months each time. I think it’s always good to pick up some out of courtesy but my experience was that many Chinese spoke better English than most Americans.I do a lot of international work and I am always told, by non-Americans, that English is the international language of business.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414791",
"author": "Eddie",
"timestamp": "2011-07-08T17:39:49",
"content": "Hire a translater.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414793",
"author": "cpmike",
"timestamp": "2011-07-08T17:42:03",
"content": "firefly was right on.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414798",
"author": "supershwa",
"timestamp": "2011-07-08T17:46:58",
"content": "Funny how so many, who know written, mathematically oriented programming languages, are afraid of most spoken languages.I guess it’s because the spoken languages aren’t as precise as math, and the computer doesn’t laugh at you when you screw up. :P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414800",
"author": "Chris",
"timestamp": "2011-07-08T17:47:36",
"content": "I failed spanish in High School, I doubt I could learn Chinese lol. I think a better idea is to make real time translating devices for people who suck at learning other languages.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414803",
"author": "biozz",
"timestamp": "2011-07-08T17:56:09",
"content": "well i do live in americai should learn the 2030 national language XP",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414804",
"author": "Roel",
"timestamp": "2011-07-08T18:00:26",
"content": "I think that China is overrated. They can’t keep on growing like they do. And do they have any other skills than producing cheap stuff and imitating western technology? The reverse holds: the Chinese should actually learn English.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414805",
"author": "jackparn",
"timestamp": "2011-07-08T18:03:36",
"content": "if you go to china unless you are in big city, otherwise there are not many guy can speak english. That means if you go to china for bussness language won’t be a problem.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414806",
"author": "abobymouse",
"timestamp": "2011-07-08T18:05:34",
"content": "English is already not the most spoken language on the Internet – people here are speaking a “minority” language.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414807",
"author": "Justin",
"timestamp": "2011-07-08T18:05:54",
"content": "Sorry, just because Adafruit/MAKE/HAD’s all butterflies-in-the-tummy about their latest passion doesn’t mean all us makers should be as well.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414808",
"author": "shazzner",
"timestamp": "2011-07-08T18:06:54",
"content": "I’m already signing up for it in college, no joke.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414810",
"author": "pt",
"timestamp": "2011-07-08T18:09:10",
"content": "@justin, if you read past the headline and read the actual article, you’ll see why i think it’s handy for makers who do business/electronics. it’s not for everyone, but there are more and more makers going from hobbyists to businesses. i provide specific examples, from sparkfun to EMSL & tv-b-gone to chumby – prolific makers visiting china (and some learning the language).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414811",
"author": "dext3r",
"timestamp": "2011-07-08T18:10:07",
"content": "I’m with Justin on this one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414812",
"author": "supermaggel",
"timestamp": "2011-07-08T18:10:44",
"content": "the only thing from china that i like is their food. i don’t like the people, i don’t like the government, i don’t give a flying f. that its economy is booming, i dont like child labour, i dont like their honour based etiquette… seriously, i like learning languages, i speak english, french and im learning spanish and portugeae… screw mandarin a millionfold",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414813",
"author": "anomdebus",
"timestamp": "2011-07-08T18:11:33",
"content": "By the time parity comes (if it does), what are the chances that different languages will be a barrier at all? Just look at the progress of online translators just in the past 5 years.supershwa,Or possibly there is reluctance to learn something that ends up being a dead end. I have no interest in learning Cobol even though a number of people can make megabucks with it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414821",
"author": "greg",
"timestamp": "2011-07-08T18:26:35",
"content": "konrad adenauer(chancellor of west germany)was asked (by an english speaker)what the secret to Germanys post war industrial and export success was,and how it could be imitated,he replied I want to sell to you I speak English you want to sell to me speak German",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414828",
"author": "Sven Endori",
"timestamp": "2011-07-08T18:37:34",
"content": "I have no problem learning another language, if I think that it’s going to be useful to me. For example, I plan on learning Japanese, because I encounter it a lot more than I encounter Chinese. It’s a plain and simple fact in my world.And to those of you saying that we should learn Chinese because we are going to be doing business with China more and more, I ask you this: Why not just say “Learn English or we won’t deal with you”? The sword cuts both ways, I’m willing to bet that they’d be willing to train a few people in English to keep our business. Or should we just give in to them now and become New China instead of America?English is the international business of language. That’s a fact. Let’s keep it that way, alright?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414830",
"author": "Dr. Nefario",
"timestamp": "2011-07-08T18:43:31",
"content": "+ 1 for learning another language, whatever it is.I still find hard to believe that so little people learn to speak Spanish while there are almost 50 million Latinos living in America…BTW don’t use software if you want to learn another language, just learn the basics and travel a little, if it’d work foreign language teachers would have ceased to exist a long time ago…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414837",
"author": "Aaron",
"timestamp": "2011-07-08T18:50:50",
"content": "Torrone, if it’s not for everyone, then why do you say it’s for everyone on the cover of the magazine?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414838",
"author": "xorpunk",
"timestamp": "2011-07-08T18:51:18",
"content": "They are only a ‘super power’ because of their government assisted management techniques..a nice way of saying it..America did it without stacking on top of each other and being threatened by militant supervisors.. we’re not cool :(",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414854",
"author": "harro",
"timestamp": "2011-07-08T19:18:09",
"content": "I don’t see it. English is the international language of business. A (chinese) business which has no documention in english can’t be taken serious. So if you want to be big on the international market, you’ll put your stuff in english. It’s an economical paradoxon.It’s of cause a diffence when you work in a foreign country, then you should learn their language regardless which country.I’m saying that as a German, not an American who tend to refuse learning foreign languages because you already speak english (sorry but you guys get allways a bit arrogant when it comes to the english language).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414857",
"author": "twopartepoxy",
"timestamp": "2011-07-08T19:23:24",
"content": "是谷歌翻译普通话有什么好处？",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414861",
"author": "David s",
"timestamp": "2011-07-08T19:26:31",
"content": "It’s odd to say all makers and then qualify it with business communication rather than project type communication. Most of us don’t do serious business with companies where it’d be useful to know Chinese…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414868",
"author": "sseries",
"timestamp": "2011-07-08T19:59:01",
"content": "Having learnt Chinese myself, I would encourage anyone to learn a Chinese language, if nothing more than being a fascinating experience. Though I do not claim to be amazing, being able to carry out a conversation in another language with someone who does not speak my own is a great feeling.On the business side of things, if you are willing to read and write Chinese then you can open yourself to a world of companies who do not communicate in English. Or if you are doing business face to face, you will be able to get yourself a much better deal by speaking the lingo (or eves drop in on when you’re not getting a good deal!).Please steer clear of Rosetta Stone for learning any Chinese language. As anyone with a basic knowledge of Chinese languages (or a quick google will tell you) they are tonal, so the pitch you say a word at with effect accuracy or meaning of what you are trying to say. Rosetta Stone (while good for other languages) does not account for this in any way.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414871",
"author": "Steve-O-Rama",
"timestamp": "2011-07-08T20:03:48",
"content": "Screw the language barrier. If the chinese manufacturers would merely proofread their own damn data sheets and fill them with relevant and clear information, whatever the language, I’d be on cloud nine. It’s simply amazing that some of these companies survive, publishing data sheets of such poor caliber.That said, I try very hard to NOT do business with the chinese. It’s difficult to sponsor a country whose government imprisons and silences so many people for expressing themselves, among their other human rights violations.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414876",
"author": "Tom the Brat",
"timestamp": "2011-07-08T20:12:06",
"content": "Hebrew might not be a bad choice as a second language for Geeks. Seems a lot of tech stuff is done in Israel lately.(I speak neither Hebrew nor Chinese.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414880",
"author": "pt",
"timestamp": "2011-07-08T20:24:24",
"content": "@aaron, read the article :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414883",
"author": "Mike",
"timestamp": "2011-07-08T20:27:21",
"content": "As a maker who has started a business around my hobby, my business sources parts and service from China, and we communicate with them solely in English, even though I am myself Chinese.If you want to learn Chinese, then great, expand your horizons, learn new skills etc. But it is by no means absolutely necessary now, nor will it be absolutely necessary in the near future.China is rising economically, but it’s not without its own problems. And America isn’t going to disappear overnight. I don’t see how it would be possible to replace English as the de-facto language of business communications within the next few decades without some kind of massive heist involving a billion chinamen",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414887",
"author": "M4CGYV3R",
"timestamp": "2011-07-08T20:34:30",
"content": "I learned Japanese, thanks very much. I am quite a bit happier knowing that than Chinese. I’m not a huge fan of China or its language.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414889",
"author": "Sudopinion",
"timestamp": "2011-07-08T20:37:42",
"content": "i can haz babelfish?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414893",
"author": "Gus",
"timestamp": "2011-07-08T20:54:04",
"content": "I think Chinese being a must is only half truth. China will not dominate in manufacturing in the future as it has up till now. Inflation and salary increases in China is/has caught up to that in the U.S. Their is a trend of companies exiting China to other parts of Asia and now Latin America for cheaper labor. So for a maker to learn Chinese would be nice, but not essential. One seems to forget that English is a global language and not as rare as once thought.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414895",
"author": "Erik",
"timestamp": "2011-07-08T20:54:42",
"content": "I agree, but then again I will move there in February to pursue my career as an embedded systems engineer.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414899",
"author": "GuiltyPixel",
"timestamp": "2011-07-08T21:02:37",
"content": "They’d love that. Then we could be the feeble minded business partners every profit loving capitalist wishes they had.I think English is only the “language of business” due to its ambiguity and propensity for abuse. Its easy to confuse people when one word has 6 meanings. Lets make it simpler by adopting an independently evolved language with over 10,000 characters, based on a culture which shares little with the rest of the world. I’m sure that will work out great.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414903",
"author": "Tom the Brat",
"timestamp": "2011-07-08T21:09:22",
"content": "So who’s going to use an Arduino to make a universal translator?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414910",
"author": "Brian",
"timestamp": "2011-07-08T21:16:01",
"content": "I have certainly considered it… I think personally I would find it very challenging. I have the benefit of knowing many students from China so when I need something translated better than machine I go to them.However it would make talking to suppliers much easier and China is here to stay for part supplying. In short if you think it would be fun do it. If you just want it for business, wait until you have enough volume that you need to talk to manufactures. They aren’t going to sell you 10 of something anyway…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414914",
"author": "zuul",
"timestamp": "2011-07-08T21:27:46",
"content": "While it would be good to learn a different language, we seem to be getting along fine with English. If you’re a “maker” who does not have a maker-related business or is not doing business with chinese companies, there is no need to learn it. Even if you did business with China it’s still not a requirement.For example, China is the largest producer of rice, and rice is in a lot of food products. Yet I’m willing to bet most food companies that use rice from China don’t know Chinese.Chinese takes years to learn and even then you may still sound like a child when you speak it.Honestly I can’t see the average maker doing that just to buy parts or read a datasheet.I’m sorry to say it feels like this is just Phil doing something and wanting everyone else to do it too.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414915",
"author": "cliff",
"timestamp": "2011-07-08T21:29:07",
"content": "every time I see “China’s global GDP share will likely bypass that of the US in a few short years” I want to bang their head off a desk. China’s problems make the US’s look like nothing. The only reason why everyone and their brother doesn’t know it is the massive firewall, and oppressive regime that kills everyone that speaks out. China is bursting at the seams and is so close to civil war, we will more than likely see it in not just our lifetimes, but next few years.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414917",
"author": "Chris",
"timestamp": "2011-07-08T21:31:08",
"content": "GDP is not necessarily an indicator of reality.And the Chinese, in their rapid economic expansion, seem to have lost their grip on reality.Want to see something amazing/scary? Look up the “ghost cities” of China. Entire cities are being built, not because of actual need; but based on economic speculation and greed. Many are massive, with homes for millions, public and government buildings, businesses locations, and even megamalls. And then they’re left completely abandoned, to fall apart with time and disuse.Here’s a good link, with satellite photos showing the scale of these cities:http://www.dailymail.co.uk/news/article-1339536/Ghost-towns-China-Satellite-images-cities-lying-completely-deserted.htmlCorruption and waste are growing faster in China than their economy. This is only one dramatic and visible example. Sooner or later, reality comes around, and the resulting adjustment is not going to be pleasant.A little more reality for you:1) English is the third most natively spoken language in the world, after Mandarin Chinese and Spanish. But English is much easier to learn than Chinese, giving it an indisputable advantage as an international language of business; regardless of economics.2) I deal with Chinese companies just fine, on a regular basis, in English.3) Products for which datasheets are available only in Chinese typically aren’t worth bothering with. They tend not to be available to the average person, at least not in any sane quantity. Often they’re cheap products of poor quality and reliability. And even without being able to understand a Chinese-only datasheet, you can still tell that many are poorly written and hastily thrown together. Why would I want to learn Chinese for that?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414923",
"author": "pt",
"timestamp": "2011-07-08T21:39:05",
"content": "@chris – you didn’t read my article re: “Products for which datasheets are available only in Chinese typically aren’t worth bothering with.” that’s not correct.“For me, each day for the last 5+ years, my exposure to Chinese has increased exponentially. Daily emails to suppliers, phone calls late at night (time zone differences), and looking at data sheets to figure out what’s what. One of the things that you’ll notice when you get components, or let’s say something like LCD screens, directly from China is that the data sheet and code examples are written in Chinese. This is because it’s not meant to be used by anyone else besides other Chinese manufacturers for their products/assembly.”i can buy the exact same LCDs for example that go in to high priced “finished” goods from china that are marked up, because i can work directly with the source i can not only get better pricing but design changes if needed.as you said, mandarin is the most spoken language in the world, and while some continue to say it’s hard i am find reading it “easy” compared to other languages i’ve attempted to learn.as far as ghost towns go every country has these, have you visited detroit lately?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414924",
"author": "horst",
"timestamp": "2011-07-08T21:39:10",
"content": "It’s not true, that the chinese do nothing else then copy stuff…While searching for ways to hack my digtal picture frame I surfed around some chinese websites and there is a whole second internet with a lot of in depth information.;)For example the chip I searched for was only realy documented in chinese because the whole picture frame was developped there so no need to publish english datasheets (and the chip was developped by an american company!)A lot of hardware is completely developpped in china and only some “western” company puts it’s logo on it…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414925",
"author": "JAyGee",
"timestamp": "2011-07-08T21:39:46",
"content": "Personally, I’ve decided to start to work on a biological hack for my ear. I call it “babelfish”… just kidding!Seriously, China’s rise in global influence is real and, barring a cataclysm of global proportions, surpassing the West is inevitable. (Many Westerners seem to forget that Chinese civilization goes back 1000s of years before anything like it rose in the West.) The rest of us need to figure out how to embrace the changes and learn how to benefit from them. Learning Mandarin Chinese is a great way to start.Other languages for Americans to consider in a “multi-polar” world: Spanish (duh!) and Portuguese since our hemispheric neighbors and nearest trade partners speak these. As China’s influence increases, strong alliances will be needed to counter any “overreaching” of this nascent superpower. No one will be able to do it alone.PS: Kudos to HAD and other “Maker/Hacker” forums for bringing up this topic.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,146.033538
|
||
https://hackaday.com/2011/07/08/bluescripts-makes-bluetooth-control-from-android-a-bit-easier/
|
Bluescripts Makes Bluetooth Control From Android A Bit Easier
|
Mike Szczys
|
[
"Android Hacks"
] |
[
"bluescripts",
"bluetooth",
"control"
] |
Here’s a way to
gain control of your projects using an Android device
. Bluescripts is a free app available in the Android market that makes it a bit easier to make interfaces to send customizable messages. If you have a Bluetooth receiver in your project, connecting to it is as easy as putting the MAC address into an XML file on the Android device. Each tag in that file has a name, as well as the address of the target and the message that should be sent. On the receiving end, you just need to make sure your project hardware is ready to receive an ASCII message and act based on what comes through.
Check out the demonstration video after the break. Perhaps it’s not as cool as you could do if you were
writing your own Android program
, but we can’t think of anything we’ve seen that makes an Android interface this quick and easy.
[youtube=http://www.youtube.com/watch?v=ZwpuBH2VfSA&w=470]
| 11
| 11
|
[
{
"comment_id": "414738",
"author": "Colecago",
"timestamp": "2011-07-08T16:26:20",
"content": "You’re right, it is cooler to write your own android program. But if you are going to promote your android programming series in all these bluetooth posts, maybe finish your freaking android bluetooth tutorial which was talked about in the tutorial series.For the rest of ushttp://www.elecfreaks.com/677.htmlis a good referenceand there was a bluetooth android car hack back in the day that had a enough example code to get started.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414818",
"author": "Brian",
"timestamp": "2011-07-08T18:20:45",
"content": "Thanks for posting it! I hope it helps some people!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414882",
"author": "Brian",
"timestamp": "2011-07-08T20:26:29",
"content": "@Colecago the program is open source so you are free to do whatever you want with it. Permissive license… It is more complex than the elecfreaks code, the SDK has a significant amount of info on the Bluetooth API as well…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414911",
"author": "Colecago",
"timestamp": "2011-07-08T21:17:57",
"content": "@BrianNo I was complaining about Hackaday, several times they have commented in bluetooth posts about following their tutorial series to write your own bluetooth apps, but the series stops before it gets that advanced. It does talk about an advanced series of tutorials to cover that, but such a series has not surfaced yet.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415149",
"author": "epokh",
"timestamp": "2011-07-09T08:47:52",
"content": "Well, there is indeed a more advanced solution for bluetooth interfaces, is called Amarino.http://www.amarino-toolkit.net/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415168",
"author": "Spiralbrain",
"timestamp": "2011-07-09T10:45:17",
"content": "very impressive!This is perhaps the simplest way to connect diy bluetooth enabled devices to android. all up and running in a few minutes.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415300",
"author": "Brian",
"timestamp": "2011-07-09T18:58:31",
"content": "@epokh, you may wish to look at MDFly’s bluetooth module. It is superficially the same one as Sure but half of the price. Also other eBay stores have them for as little as 6.50.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415302",
"author": "Brian",
"timestamp": "2011-07-09T18:59:17",
"content": "@epokh, by look I meant add to your page about the bluetooth module sources :-) sorry!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415303",
"author": "Brian",
"timestamp": "2011-07-09T18:59:42",
"content": "@ Spiralbrain, Thanks!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "453940",
"author": "Corey",
"timestamp": "2011-09-12T23:39:24",
"content": "I recently came upon this post, i was thinking of trying something similar with an RC car. I have a decenter tutorial here >>http://www.instructables.com/id/Android-RC-Car/#step1… Basically i want to write the application myself, so if i were to follow the steps on there, get the micro controller and bluetooth set. I should be able to use the bluetooth shell to start writing commands right? Then build my application?Thanks",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "2174523",
"author": "Mae",
"timestamp": "2014-11-24T03:11:25",
"content": "Hello sir.. In every Button u have sir did you use different XML FILE???",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,145.950037
|
||
https://hackaday.com/2011/07/08/mini-ir-theremin/
|
Mini IR Theremin
|
Brian Benchoff
|
[
"Musical Hacks"
] |
[
"infrared",
"theremin"
] |
[Chris] at PyroElectro sent in a great 8-part write-up of a
miniature infrared theremin
.
The theremin is based on a PIC microcontroller and an infrared distance sensor. The build log goes through the theory of operations for the
IR sensor
and
tone generation
. [Chris] definitely does a great job showing the math that went into the design.
Although this project isn’t a true theremin because it operates on light like a
few
other
projects we’ve covered in the past, it’s easier to play because of the hard-coded notes. The build does show some promise though – he could likely expand it to use more accurate ultrasonic sensors or use, “two proximity sensors, one for treble and one for bass like an accordion.”
The theremin is usually played
with both hands
providing a continuous pitch and volume. This project features hard-coded, discrete notes, so we’re wondering about the possibility of implementing MIDI on this IR theremin. The original
MIDIbox
was based on the same microcontroller as this project, so it’s definitely a possibility.
Check out the video of the theremin in action below.
[youtube=http://www.youtube.com/watch?v=K6bF3Q_YM68&w=470]
| 6
| 6
|
[
{
"comment_id": "414720",
"author": "gijs",
"timestamp": "2011-07-08T15:41:15",
"content": "related link:http://gieskes.nl/instruments/?file=wavetable-radar",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414726",
"author": "BobSmith",
"timestamp": "2011-07-08T15:54:19",
"content": "That’s… not a theremin. It doesn’t play in a very similar way at all, and it doesn’t operate by the same principles. Folks like to call anything they can wave their hands around in front of and makes a noise a theremin. In that case, most small children and some pets are also theremins.Interesting project, in fact, but not a theremin.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414733",
"author": "darkore",
"timestamp": "2011-07-08T16:03:52",
"content": "Karate chop music !!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415043",
"author": "justin sabe",
"timestamp": "2011-07-09T02:32:57",
"content": "MIDI, being about 30 years old and not changing one bit is pretty easy to implement. It’s ttl serial at a funky speed with a simple op code that says what channel and note/cc and after touch.a ‘real’ theremin is a real interesting instrument from a historical and analog systems standpoint. I can see how an IR theremin to a heterodyne theremin is as different as a guitar is from a ukulele or a violin but until there is a taxonomic definition of hands free electronic music instrument I think IR theremin isn’t misleading. As far as a novice sees is a music box that you don’t touch.OTOH don’t call my euphonium a french horn or a trumpet and don’t tell me that it isn’t a tuba.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415049",
"author": "Charles Gantt",
"timestamp": "2011-07-09T03:06:01",
"content": "I built a cheap optical “Theremin” using two 555s and 7 other components. Its based on a design by Forrest Mimms III from a old Learning Electronics book.http://themakersworkbench.com/?q=node/309",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415122",
"author": "echodelta",
"timestamp": "2011-07-09T06:24:38",
"content": "Bassackwards “keys” for starts. When it’s as analogue as the voice, that’s when it gets fun!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,147.662292
|
||
https://hackaday.com/2011/07/08/reverse-engineering-vxworks-which-replaces-linux-on-newer-routers/
|
Reverse Engineering VxWorks (which Replaces Linux On Newer Routers)
|
Mike Szczys
|
[
"Security Hacks"
] |
[
"DD-WRT",
"linux",
"reverse engineering",
"router",
"RTOS",
"Tomato",
"vxworks",
"wrt54g"
] |
The Linksys router seen about is a WRT54G version 1. It famously runs Linux and was the source of much hacking back in the heyday, leading to popular alternative firmware packages such as DD-WRT and Tomato. But the company went away from a Linux-based firmware starting with version 8 of the hardware. Now they are using a proprietary Real Time Operating System called VxWorks.
[Craig] recently put together
a reverse engineering guide for WRT54Gv8 and newer routers
. His approach is purely firmware based since he doesn’t actually own a router that runs VxWorks. A bit of poking around in the hex dump lets him identify different parts of the files, leading to an ELF header that really starts to unlock the secrets within. From there he carries out a rather lengthy process of accurately disassembling the code into something that makes sense. The tool of choice used for this is
IDA Pro diassembler and debugger
. We weren’t previously familiar with it, but having seen what it can do we’re quite impressed.
[Image via
Wikimedia Commons
]
| 25
| 24
|
[
{
"comment_id": "414678",
"author": "Roel",
"timestamp": "2011-07-08T14:14:01",
"content": "IDA has been the de facto standard for reverse engineering since decades. Shame on you ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414680",
"author": "Boris",
"timestamp": "2011-07-08T14:20:01",
"content": "Someone familiar with reverse engineering of virtually any code, yet unfamiliar with IDA ? That’s strange ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414682",
"author": "blub",
"timestamp": "2011-07-08T14:20:42",
"content": "please just buy the GL version it has linux on it and shows the manufactur that we care about what they put on the routers",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414683",
"author": "danman1453",
"timestamp": "2011-07-08T14:20:49",
"content": "Agreed. Then again, how much software reverse engineering do we do here? Not much when it comes to coding a ‘duino.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414695",
"author": "fartface",
"timestamp": "2011-07-08T14:54:47",
"content": "@blub Great idea if your laptop and gear are from the stone age. I use N wireless for high speeds and 1000bt for my network. the 10 year old GL version is so out of date it cant do any of that.The GL version is great for the poor and the luddites, but for any real speeds at home or the office you need newer hardware, and nothing is available.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414702",
"author": "_txf_",
"timestamp": "2011-07-08T15:05:35",
"content": "@blubThere are much better routers that accept linux firmware. I have a netgear wndr3700, expensive but extremely powerful.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414711",
"author": "tooth",
"timestamp": "2011-07-08T15:25:45",
"content": "i got one and flashed it just to make my tv stand and any thing that hooks up via Ethernet wireless.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414714",
"author": "chango",
"timestamp": "2011-07-08T15:32:18",
"content": "I wish there was a “day pass” license for IDA Pro. I would pay $30 for this privilege, but I can’t really justify $500+ for a tool I might use once or twice a year for personal projects.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414718",
"author": "Dax",
"timestamp": "2011-07-08T15:39:00",
"content": "Color me ignorant, but Linux in its own right isn’t hard real time, so a router would have to have a RT-kernel underneath to do the timing sensitive bits anyways, or throw enough hardware at it that the Linux kernel would be able to always keep up.So, isn’t it actually counter-productive to run Linux on top because it just takes more processing power for what 99.99% of the users don’t really care for anyways?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "2551073",
"author": "Big_Up's",
"timestamp": "2015-05-03T06:44:29",
"content": "“Color me ignorant”.Not today, maybe tomorrow. Consider that I don’t have to tell you about your heart beat. I may say something to tell you how horrible a person you are however that would be a reflection of something similar to a DDOS attack. Overclocking to pick up the workload on how to respond with a snazy comeback, try to punch me in the face or run away.Consider that we talk a common language be it Sanskrit, Ancient Sumerian or Latin. We agree on a set meaning of high level words to communicate ideas.I imagine breathing in Morse code would be tiresome. In this instance using Linux to call ASM instructions is preferable. Sending Morse of your WPA-2 implementation would force you to realize you are breathing manually.",
"parent_id": "414718",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "414736",
"author": "cgimark",
"timestamp": "2011-07-08T16:21:44",
"content": "If you can’t afford IDA there are alternatives. Embedded gear is usually either ARM or MIPS and recstudio can do that for free. Version 4 beta is out and does quite well ,even decompiles.http://www.backerstreet.com/rec/rec.htm",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414739",
"author": "lwatcdr",
"timestamp": "2011-07-08T16:27:17",
"content": "Is there any good FOSS wifi router sofware that runs on x86 Linux?A good number of people have personal NAS or even a firewall like smoothwall. Seems to me that instead of using a router like this you could just add a wifi card to your server or firewall and have one less device to worry about. You might even save a little power if you are running the server or firewall anyway.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414756",
"author": "xorpunk",
"timestamp": "2011-07-08T16:58:27",
"content": "never use a decompiler to document code..especially the ones in IDA..it’s more productive to trace and comment code, xrefs also help.x86 bios reversing is done the same deflate->?decrypt->trace&document. ARM is actually easier than x86 when it comes to bios/real-mode.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414757",
"author": "Charlie",
"timestamp": "2011-07-08T17:00:35",
"content": "Remember the Hacker Ethic. It’s doesn’t always need to be better to be a proof of concept. It’s just a different way of doing things. Sometimes it works better, sometimes not. The important thing is.. There IS a different way to do things.Take the Narrow road. It may not be as fast, but the views are better and at the end is a much nicer place.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414759",
"author": "James",
"timestamp": "2011-07-08T17:03:29",
"content": "dd-wrt has a package that runs on x86 linux and works fantastichttp://www.dd-wrt.com/wiki/index.php/X86",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414769",
"author": "isama",
"timestamp": "2011-07-08T17:19:09",
"content": "lwatcdr: there is astaro which is good but needs 1gb of ram to run smooth, it has stuff like bgp and thrunking built in so its is likely to be overpowered. On the other hand a debian box with shorewall runs smoothly with 256m or less. it it harder but more fun! :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414850",
"author": "chango",
"timestamp": "2011-07-08T19:10:59",
"content": "cgimark: Thanks. I just grabbed REC, and while it does MIPS (handy for this project) it doesn’t do ARM. Promising though, next time I have to do work with x86.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414858",
"author": "ngnlabs",
"timestamp": "2011-07-08T19:23:38",
"content": "Nice – good to see IDA Pro getting coverage. the dogs bollocks as far as debug and reverse engineering ASM goes.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414898",
"author": "dklight",
"timestamp": "2011-07-08T21:00:55",
"content": "OpenWRTis much better than ddwrt, speciallly on x86. It has tons of packages (very similar to debian), and a nice web interface.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414997",
"author": "MpegMaster",
"timestamp": "2011-07-09T00:29:30",
"content": "Tomato is the BEST of the BEST!!!http://www.linksysinfo.org/forums/forumdisplay.php?f=160Cheers!!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415010",
"author": "Gösta",
"timestamp": "2011-07-09T00:59:16",
"content": "Awesome!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415059",
"author": "Jfiliault",
"timestamp": "2011-07-09T03:56:18",
"content": "Hey I have 8 years of VxWorks experience if anyone needs any help with this. I work for a really BIG company that uses VxWorks all the time. Let me know if I can be of any use! -Justin",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415163",
"author": "Rogan Dawes",
"timestamp": "2011-07-09T10:26:55",
"content": "@fartface Check the list of supported hardware on the OpenWRT site. e.g. Buffalo WZR GN300HP has 4+1GbE ports, N, USB, 32MB flash, 64MB RAM, etc.NetGear also has a nice router with OpenWRT support.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415817",
"author": "Trollicus Rex",
"timestamp": "2011-07-10T22:08:26",
"content": "I have a v 1 running DDRT.With some good aftermarket antennas and a hacked heatsink/fan I have the power cranked to 80%.Now if I could only figure out a way to boost the power from my network card(my soup can helps but doesn’t increase my transmitting power)Being at the “End of the line” for DSL in my area the only way some of my neighbors can get online is through my connection which I leave open for their use.Any one know of a good hackable wireless cards, or at least one with a good pwr output?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416592",
"author": "Paul",
"timestamp": "2011-07-12T14:47:02",
"content": "You know that VxWorks is the O/S that runs the Mitel SX200, SX2000 and 3300 PABXs?A handy command from the rudimentary shell is lkup, e.g.lkup “fred”will lookup any command or symbolic link that contains ‘fred’",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,147.960648
|
||
https://hackaday.com/2011/07/08/vu-meter-scarf-lights-up-the-night/
|
VU Meter Scarf Lights Up The Night
|
Mike Nathan
|
[
"LED Hacks",
"Wearable Hacks"
] |
[
"clothing",
"led",
"scarf",
"VU meter"
] |
[Eli Skipp] wrote in to share a project she has been working on bit by bit, for over a year –
an LED VU meter scarf
. The project was originally going to be built using a custom PCB, but no matter how long she spent troubleshooting the piece, it just wouldn’t work right. She eventually broke down and purchased a VU meter kit, which worked out quite a bit better than the homebrew version.
The VU meter circuitry is tucked away inside the scarf as she shows in the video below. The LEDs are connected using conductive thread sourced from
Lamé Lifesaver
, which she says is far more durable than other threads she has tried. After originally testing the VU meter, she was unimpressed by the output of the LEDs, so she swapped them out for brighter ones, which look much better. It looks like it works quite well – we definitely dig the idea of a scarf with a built-in VU meter, even if it was partially built from a kit.
Continue reading to see [Eli] give a quick demonstration and a rundown of the scarf’s construction.
[vimeo
http://vimeo.com/25740889
w=470]
| 10
| 10
|
[
{
"comment_id": "414760",
"author": "robomonkey",
"timestamp": "2011-07-08T17:06:05",
"content": "hook it up to the ipod,zune,walkman….people can see what you’re hearing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414788",
"author": "Will",
"timestamp": "2011-07-08T17:38:09",
"content": "Very cool. Maybe version 2 should have all the LEDs on at the same time, but the brightness is proportional to the VU meter reading.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414822",
"author": "YS",
"timestamp": "2011-07-08T18:27:51",
"content": "What? And so far no one has mentioned that she is HOT? :-DDD",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414853",
"author": "ZomB Duk",
"timestamp": "2011-07-08T19:13:36",
"content": "Must be the scarf in summer…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414953",
"author": "Retroplayer",
"timestamp": "2011-07-08T23:14:45",
"content": "Is it just me or have nerd girls been getting hotter lately? I like it!There, YS, you got one. ;_)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415160",
"author": "turn.self.off",
"timestamp": "2011-07-09T09:52:56",
"content": "@Retroplayer, heading into “hollywood nerd” territory perhaps? I do wonder tho if the male side need to sharpen up to have a chance…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415167",
"author": "YS",
"timestamp": "2011-07-09T10:40:50",
"content": "Retroplayer>”Is it just me or have nerd girls been getting hotter lately?”Yeah, it’s you. And it’s me. And it’s all of us, I think. :-DRetroplayer>”There, YS, you got one.”Um, what do you mean? I am not familiar with English yet, so sorry for asking.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415475",
"author": "Retroplayer",
"timestamp": "2011-07-10T06:24:27",
"content": "@YSYou said “What? And so far no one has mentioned that she is HOT? :-DDD”So I was telling you that I said it for you first since you were disappointed no one said it.It was nothing rude. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415476",
"author": "Retroplayer",
"timestamp": "2011-07-10T06:31:44",
"content": "@turn.self.offProbably. It is becoming more acceptable to be a nerd now, I guess.I am one of those nerds that still have social skills, though. No trouble finding hot women. They are just never nerds along with me.Not up-to-date on the terms, but I think that makes me a geek, not a nerd. Usually “nerd” is used to describe someone that lacks social skills, plays D&D and the like. The people I have known like that were not really particularly smart or good at anything, though. Just anti-social and picked anti-social hobbies.Hmm… now that I think about it – maybe that is why the term “hacker” is used now; to differentiate from the nerds and geeks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415499",
"author": "YS",
"timestamp": "2011-07-10T08:17:07",
"content": "@Retroplayer thank you, I’ve thought something like this right from the start, but decided to clarify a bit. :-)After reading tons of datasheets and articles in English, I’ve decided to begin real speaking practice, and choosed hackaday for it. :-) Perfect place to improve knowlege and language for me. :-)>”I am one of those nerds that still have social skills”I’m too. But those social skills don’t help me to have a girlfriend… Yes, it’s butthurt. :-D",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,148.207488
|
||
https://hackaday.com/2011/07/08/humanoid-robot-listens-to-music-plays-along-on-his-theremin/
|
Humanoid Robot Listens To Music, Plays Along On His Theremin
|
Mike Nathan
|
[
"Robots Hacks"
] |
[
"hrp-2",
"humanoid",
"music",
"robot",
"theremin"
] |
Researcher and YouTube user [mspetitegeek] along with her lab mate [Tatsuhiko Itohara] have been fortunate enough to spend some time working with the HRP-2 humanoid robot from Kawada Industries. Their research has seemingly been focused on using the robot to create real-time interactions with humans
for entertainment purposes, at the very least
.
The program they created allows the HRP-2 to listen and watch its human counterpart while he plays the guitar in order to recognize a beat pattern. Once the robot catches on, it plays along on his Theremin, matching both notes and rhythm perfectly. Since the human operator is clearly playing at a fairly relaxed pace, we are curious to see a demonstration where the robot required to match a snappier tune – it could be quite interesting.
In the meantime, we’re content to just sit back and enjoy the Mogwai-esque tones of the HRP-2 rocking the Theremin.
Keep reading to see a short video of the HRP-2 in action.
[youtube=http://www.youtube.com/watch?v=-fuOdhMeF3Y&w=470]
| 13
| 12
|
[
{
"comment_id": "414656",
"author": "Philippe",
"timestamp": "2011-07-08T13:19:42",
"content": "It… uh… rocks !?!?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414665",
"author": "kabadisha",
"timestamp": "2011-07-08T13:31:07",
"content": "Who on earth came up with this? It’s an interesting and fun idea, something you might discuss over lunch and have a laugh about, but these guys actually thought this would be worth the considerable time and effort to do? Why? Am I missing something here, some greater plan this fits into?Not trying to be overly negative here – just amazed someone could be bothered to do this.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "988052",
"author": "Adam",
"timestamp": "2013-04-02T05:34:13",
"content": "“Their research has seemingly been focused on using the robot to create real-time interactions with humans for entertainment purposes, at the very least.”This is an example of entertainment. Music at this level isn’t complex as it only plays a few tones/frequencies in response to a few environmental specific tones/frequencies. The reason why this is so cool, is if this technology is able react in many different ways (letters->words->sentences) in a combinatorial response to many different environmental sounds, then we could have real-time conversation with a robot. It would feel like talking to someone who knows every fact, if lets say the robot was able to access the internet and answer any question you had. Then, you could go home smoke a joint and jam with your robot to any genre of music. IMAGINE THAT SHIT!",
"parent_id": "414665",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "414666",
"author": "kabadisha",
"timestamp": "2011-07-08T13:33:11",
"content": "Also, it seems like the robot starts playing mysteriously before the human has even set a pitch to follow? Are we sure this is real-time?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414696",
"author": "Joao",
"timestamp": "2011-07-08T14:57:15",
"content": "@kabadisha“…in order to recognize a beat pattern.”It’s not about the application, it’s about the technics developed to make the application works.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414729",
"author": "MattQ",
"timestamp": "2011-07-08T15:59:18",
"content": "If they add key recognition, and a little music theory to the bot, they could make it jam with the musician and do some improv.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414768",
"author": "Angelica",
"timestamp": "2011-07-08T17:14:38",
"content": "It’s a beat tracker, not pitch tracker. With the first few innocuous twangs of the guitar, the system picked up the tempo and beat time and started playing.As for why we did it, try finding another instrument a humanoid can play! (don’t say drum… ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414869",
"author": "bothersaidpooh",
"timestamp": "2011-07-08T19:59:06",
"content": "Anyone else see the “Johnny Five” resemblance?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414912",
"author": "ChalkBored",
"timestamp": "2011-07-08T21:23:37",
"content": "@bothersaidpoohIt looks more like a Decepticon version of a Hoveround scooter.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415154",
"author": "Amos",
"timestamp": "2011-07-09T09:09:36",
"content": "@ChalkBoredLOL (for real)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415170",
"author": "KillerBug",
"timestamp": "2011-07-09T10:46:31",
"content": "Wow…that is the most realistic humanoid robot I have ever seen…but he is just playing the guitar; the non-humanoid robot (no legs) is the one playing the theremin.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415748",
"author": "Colin",
"timestamp": "2011-07-10T19:57:13",
"content": "@kabadishaNever ask the “why bother” question; if you analyze it for long enough, it becomes apparent that there isn’t really a point in doing *anything*",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "3346378",
"author": "zuul",
"timestamp": "2017-01-02T06:19:31",
"content": "robots AND theremins? … <3",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,147.901361
|
||
https://hackaday.com/2011/07/07/diy-table-saw-cuts-through-anything-leaves-no-room-for-mistakes/
|
DIY Table Saw Cuts Through Anything, Leaves No Room For Mistakes
|
Mike Nathan
|
[
"Tool Hacks"
] |
[
"pcb saw",
"switching power supply",
"table saw",
"tools"
] |
Students in the BASTLI lab at the Swiss Federal Institute of Technology Zurich had been stuck using underpowered and unreliable saws for quite some time. The saws often got stuck while cutting through PCBs and were generally a drag to use. When group member [Mario Mauerer] came across a big and powerful brushless motor in his basement,
he decided it was time to upgrade the lab’s cutting tools
.
Along with fellow student [Lukas Schrittwieser] he built a test rig to see how powerful the motor really was, and satisfied with the results, the pair set off to build their own table saw. The enclosure was wrapped up pretty quickly, leaving the pair to source a power supply. Rather than purchase one, they built a 700w monster switching PSU to power their saw.
As you can see in the video below the saw chews through most things with the greatest of ease, but the students added a “boost button” to the saw just in case they need to run it at full tilt.
While we can’t exactly overlook the lack of finger and eye protection in their demonstration, it does look like a great little tool to have around.
[youtube=http://www.youtube.com/watch?v=NTVCvn05nYQ&w=470]
| 62
| 50
|
[
{
"comment_id": "414407",
"author": "purduecer",
"timestamp": "2011-07-07T22:14:21",
"content": "Safety glasses!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414409",
"author": "hoooooooooooooooooooooooorj",
"timestamp": "2011-07-07T22:20:14",
"content": "What kind of finger protection? I do a lot of woodworking and aside from eye protection, the only real protection you want there is a riving knife to keep the kerf from closing on the back side of the blade and causing catastrophic kickback…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414413",
"author": "adamziegler",
"timestamp": "2011-07-07T22:28:45",
"content": "What kind of blade is that?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414415",
"author": "adamziegler",
"timestamp": "2011-07-07T22:31:08",
"content": "found it: 10cm sawblade (coated carbide metal, 120 tooth)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414416",
"author": "Alexander von Gluck",
"timestamp": "2011-07-07T22:32:03",
"content": "ouch. Their just begging to lose a finger",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414418",
"author": "Kyle",
"timestamp": "2011-07-07T22:32:50",
"content": "I don’t know why, but to me, the idea of building a useful tool just seems way more ‘bad-ass’ than building something that is cool but useless. Nicely done. certainly beats using a hacksaw.“we can’t exactly overlook the lack of finger and eye protection in their demonstration”A lost finger just might provide the motivation to build a really cool robotic hand.Seriously though, googles. Please wear eye googles next time!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414421",
"author": "Hackerspacer",
"timestamp": "2011-07-07T22:33:59",
"content": "Uhh… needs fence / guard. Brake would be nice. Maybe a quick way to change blade height or blades. But ok… this more or less works.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414422",
"author": "Hackerspacer",
"timestamp": "2011-07-07T22:35:32",
"content": "Reminds me of the wood, yes wood bandsaw. Yes, you can do it. You probably shouldn’t. Wood is not a dimensionally stable material. It warps, absorbs moisture, etc.http://woodgears.ca/bandsaw/build.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414423",
"author": "Hackerspacer",
"timestamp": "2011-07-07T22:36:28",
"content": "Nevermind, it has a fence. Needs a guard though to prevent / minimize material being thrown though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414429",
"author": "spag",
"timestamp": "2011-07-07T22:43:13",
"content": "@Kyle, totally agree. All my favorite hacks tend to be useful in some capacity. Personally, I may make the case all fancy or add stupid LED effects, but the core functionality is there. Good work guys. Seriously though, eye protection O.oA cool feature could be to add a tach (maybe back-emf monitoring) and a controller so the saw could be maintained at an ideal (or settable) RPM. That would dispense with the boost button and probably increase safety (although I’d love to scream YOU’VE GOT BOOST POWER! while pressing the button).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414430",
"author": "Greycode",
"timestamp": "2011-07-07T22:43:19",
"content": "The saw cool, the idea cool, the cuts cool, not even a hint of safety equipment, stupid as a bag of hammers. This thing cuts nice clean cuts, the kind that if their delicate pink fingers ever come in contact with will surely cut with a nice clean cut, it looks as though they may not even know they are cutting delicate pink things until they start gushing blood.The bright side of this is, when they do cut their fingers off, the doctor will be able to put the fingers back on if they get to him in time. But the other side, when something they cut flies off into another delicate part, their eyeball, the doctor is going to have one hell of a time getting it out. Even when I use my carbide blade on my dremel, I put on glasses.Nice project, and I hope your insurance plan is the bomb.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414435",
"author": "karl",
"timestamp": "2011-07-07T22:56:27",
"content": "FYI: Last year I found the perfect saw for PCB’s – a small 4″ dimond blade wet tile saw –http://www.homedepot.com/h_d1/N-5yc1v/R-202065695/h_d2/ProductDisplay?langId=-1&storeId=10051&catalogId=10053I was able to find one at a year sale for $5 and the kerf from the cut is just about 1/16″ –Beats the heck out of using a hacksaw or a jigsaw.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414437",
"author": "vonskippy",
"timestamp": "2011-07-07T22:59:22",
"content": "They need t Steampunkify it.//kidding, just kidding.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414438",
"author": "andar_b",
"timestamp": "2011-07-07T23:00:27",
"content": "$5?!??!? Wow",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414440",
"author": "John",
"timestamp": "2011-07-07T23:12:36",
"content": "If you guys saw the table saw I use on a daily basis, it would scare the crap out of you. BTW learn what a push stick is and start using it before you lose a finger.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414441",
"author": "Tony",
"timestamp": "2011-07-07T23:12:46",
"content": "No goggles (hey, just lean back a bit!), no guard, no riving knife, no emergency stop, no kickback protection, fence not used, no pushstick, no t-slot for a sled, no sled etc.There’s a reason why the tablesaw is the most dangerous tool in the workshop, they’ll figure it out one day.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414445",
"author": "silvesterstillalone",
"timestamp": "2011-07-07T23:27:51",
"content": "My first instinct is to throw insults designed to attack the manliness of everyone here. Production saw work by hand is a..well its a thrilling thing. But I’ll leave that alone out of logic’s sake.However this shall not pass:“There’s a reason why the tablesaw is the most dangerous tool in the workshop, they’ll figure it out one day.Posted at 4:12 pm on Jul 7th, 2011 by Tony”Nope. That prize definitely goes to the radial arm saw, or more affectionately known as a radical harm saw. I will gladly use other types of standard power equipment with no safety guards (aside from the obligatory glasses) but I wont go near a radical harm saw.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414447",
"author": "biozz",
"timestamp": "2011-07-07T23:31:50",
"content": "make sure to do a finger check before and after each run XD",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414448",
"author": "Ryan",
"timestamp": "2011-07-07T23:33:32",
"content": "Blade guards are unnecessary and often get in the way. Unless you have a high quality aftermarket blade guard most of them are just plain unsafe and can interfere with the cut.I would always use safety glasses but other than that not being an idiot is the best way to avoid getting hurt.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414452",
"author": "jh",
"timestamp": "2011-07-07T23:53:34",
"content": "goggles… get stuff on you… use compressed air to blow it off… or take a shower after all the work. saws are made to cut/throw stuff… if you don’t know how to use it so that kickback doesn’t happen… don’t use it. I’ve used full size table saws, radial arm saws, chop saws, saws-all… worst kickback I’ve ever had was with the saws-all, trying (and eventually succeeding) to cut wood that was too big around. When the tip would jamb up and kick, it was a bit jarring, but I was prepared for it (no locked elbows). Remember to go slow and don’t rush and be aware of what you’re doing. This will keep you from loosing body parts.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414453",
"author": "jh",
"timestamp": "2011-07-07T23:54:19",
"content": "oh yeah… that’s a nice little saw for the small bits. I wouldn’t mind having one myself.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414463",
"author": "Oren Beck",
"timestamp": "2011-07-08T00:31:02",
"content": "Building from a parts bin- Hack Cred. LARGE brushless counts for even more cred. Building the PSU is a step up, or down if it’s a lower volt motor. Gotta keep a sensahumor about puns or we get too serious to enjoy all this.As for the safety comments, yes- crappy safety features have maimed and killed far more folks than gear lacking any pretensions of safety concerns.The primary safety device is the human brain operating a machine. Damned little I know of in safety bits will protect an operator from brain non-function for long.Now, some brushless systems reputedly CAN do that formerly mythical, non-destructive ~4Krpm>0rpm in milliseconds but the required power densities use numbers akin to federal debt math. Figuring out the energy in the rotating mass and calculating the inverse energy+ losses required to *STOP* that rotating mass will show some cold equations about stopping a saw.Seeing a Hackerbuilt “Safestop” type system or functional equal is the next challenge.http://www.sawstop.com/how-it-works/brake-activation/That $69 cartridge + some Hackersmarts might be be a better bet than the average “Bet Your Fingers”saw. Though having the motor simply lock up zero drama might be a better/cheaper fingersaver. That is, if the blade does not break loose..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414466",
"author": "m",
"timestamp": "2011-07-08T00:42:04",
"content": "The place this thing is installed at is ~150m from the (probably) best hospital in Switzerland, so if they cut off a finger, it’s not far ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414467",
"author": "Chris",
"timestamp": "2011-07-08T00:44:57",
"content": "I have to wonder if the reason they were having so much trouble with their original saw is because they were using the wrong kind of blade (HSS instead of carbide) and improper technique.Adding more power when you haven’t got the basics downpat may help you finish the job short-term, but it may also lead to a bigger accident long-term.It is a nice saw though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414468",
"author": "Olivier",
"timestamp": "2011-07-08T00:47:42",
"content": "There is a “security” feature : “three warning-beeps from the motor before starting the blade” :-/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414469",
"author": "Kelly Martin",
"timestamp": "2011-07-08T00:51:49",
"content": "Dude, that tablesaw is a baby compared to the one I have out in my garage (it’s a 12 amp motor, or over twice the power of that cute little gadget), and it’s only a basic contractor saw. There are top-end saws (like the one Norm uses on New Yankee Workshop) that pull 3000 watts or more.And it has exactly the same set of safety features as my table saw; I haven’t had the useless guard on mine in years, as it would just get in the way for a lot of things, and makes using the stacked dado impossible. I wouldn’t mind a riving knife, those do reduce the risk of kickback, but the stupid guard and fence that come with most American table saws are useless and every serious woodworker removes theirs almost immediately.The comments about safety here also really belie a great deal of ignorance of woodworking tools. Table saws are dangerous, but (like any dangerous thing) can be used safely and effectively as long as you stay focused and don’t forget what you’re doing. (And having SawStop helps, too.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414474",
"author": "D_",
"timestamp": "2011-07-08T01:19:38",
"content": "LOL I can’t resist. “manliness”, wouldn’t assuming that those that brought up the safety concerns are men, be sexist? All in all a nice saw, but the lack of eye protection in a school setting is a bit surprising. My prescription eyeglasses have protected my eyes so many time, I couldn’t think about going without eye protection. Protected from brain farts, and the unexpected.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414486",
"author": "Pete",
"timestamp": "2011-07-08T02:17:10",
"content": "I’d say the most dangerous thing here is the operator in the video and not the saw itself. All power tools require a safety conscience mind and operating a saw without safety glasses is foolish. I’d say a face shield might be more appropriate here considering the things they are cutting.A riving knife is really unnecessary here as the material to be cut (FR-4) is stable. Riving knives keep materials like wood, which can sometimes close the cut back on itself, separated on the back side of the blade, thus minimizing kickback potential.The power supply and construction of the saw is quite impressive. Although, a ground (surface ground, not electrical ground) nut for the blade arbor may have been a better choice.I liked that they built a dyno to test the output of their motor. This leads me to believe they calculated the required power for their saw etc. which shows some thought and intelligence went into this build.Overall, great job. Wear safety glasses and use best safety practices so you can keep making new projects.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414489",
"author": "Mikhail Bakunin",
"timestamp": "2011-07-08T02:35:16",
"content": "You guys totally missed it. The biggest danger of this saw is the fiberglass dust. (Much different then fiberglass stands like home insulation). The pure, tiny, tiny dust particles are really bad for your lungs – really bad.You might not loose a finger, but you’ll still end up at the hospital someday….with cancer.Have fun with that.MB",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414495",
"author": "Alex",
"timestamp": "2011-07-08T02:53:19",
"content": "There’s a vacuum connected to the bottom., Mikhail.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414506",
"author": "SuperNuRd",
"timestamp": "2011-07-08T03:07:34",
"content": "Funny how he thinks that leaning back andsquinting protects his eyes seriously iI question your ability to process right from wrong this was WRONG!!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414520",
"author": "haexn",
"timestamp": "2011-07-08T04:06:27",
"content": "@D_If they weren’t men then isn’t it a complement?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414527",
"author": "Sodor",
"timestamp": "2011-07-08T04:44:49",
"content": "Look a new machine to sew fingers…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414532",
"author": "Mythgarr",
"timestamp": "2011-07-08T05:00:15",
"content": "@Oh so many “This is the way I do it” comments –While it’s true that many carpenters take the various safety guards off a table saw first thing, most are smart enough to use a push stick on any cuts that would put their fingers within an inch or two of the blade. Paying attention to what you’re doing is ALWAYS the #1 way to avoid an accident but I would think part of that would be to consider just how close your hand is coming to that blade and to consider using an easily replaceable jig to prevent a rather permanent accident.Also, safety glasses and probably at least a dust mask. They’ve got metal filings, glass shavings, and god knows what else flying back into their face. A vacuum doesn’t catch everything.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414533",
"author": "Mythgarr",
"timestamp": "2011-07-08T05:01:06",
"content": "Oh – and a really awesome hack! To put something like this together from scrap is very impressive. They even though to add a fence (that they seem to never use).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414535",
"author": "A_Blind_Man",
"timestamp": "2011-07-08T05:14:06",
"content": "@kellywell yes and no, yeah this saw is Alot smaller compared to a wood saw, but that is its purpose, to make very small “precise” cuts. And for that the motor that they have in there is quite large",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414544",
"author": "zacdee16",
"timestamp": "2011-07-08T05:39:59",
"content": "I think that they should add a foot pedal for control of the blades (variable speed). And maybe use a metal clamp specially designed to push objects across to avoid loosing a finger.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414577",
"author": "Otacon2k",
"timestamp": "2011-07-08T07:33:01",
"content": "@Pete:“A riving knife is really unnecessary here as the material to be cut (FR-4) is stable. Riving knives keep materials like wood, which can sometimes close the cut back on itself, separated on the back side of the blade, thus minimizing kickback potential.”Bullshit. Come on, if, at the end of a cut, there’s only millimeters of material left to hold both pieces together, nothing will stop them from closing in on each other but a riving knife. Not much of a closing is needed for kickback, just a hair, touch the blade and off it goes.Seriously, +1 for riving knife, +1 for goggles)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414601",
"author": "Mac",
"timestamp": "2011-07-08T08:37:16",
"content": "well appart from lack of proper protection (which are not dramatic when cutting FR4), the project interesting part is the PSU and inverter.But I think they must teach a little bit more cutting theory. They use a motor that is rated 10krpm@40v, with a 100mm saw (they do not provide the speed they use, just a guess from motor refs).This mean 3000 m/min cutting speed! This is insane.Max cutting speed for carbine should be closer from:50m/min in stainless or titanium100m/min in steel300-500m/min in aluminumaround 500m/min in wood, fiberglass and al.Exceeding cutting speed only gives shorter tool life and dramatic tooling failure.Carbide is very brittle and you don’t want to see carbide shards flying a 200km/h.That’s why a riving knife is a must, it keeps the material out of saw sides.On a another note, it’s better to have a double nut for locking the saw blade, as with one it will screw itself when the saw cut at highest power, making removal a pain (and stainless is prone to seizing, making things worse).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414610",
"author": "rbjacobs",
"timestamp": "2011-07-08T09:44:36",
"content": "Okay, just forget about the safety issues here…They made their own inverter and power supply! That’s quite a big accomplishment!The reasons I would NOT do a hack like this are the effort and cost required, plus the availability of ready made and safe alternatives.But I bet they can turn the design into a wicked controller for a 4th axis on a CNC table.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414613",
"author": "TacoStand",
"timestamp": "2011-07-08T09:52:20",
"content": "Not wearing safety goggles is completely unacceptable.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414627",
"author": "Climate Change Kills",
"timestamp": "2011-07-08T11:05:29",
"content": "They will be smiling until a thumb drops on the floor..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414628",
"author": "Climate Change Kills",
"timestamp": "2011-07-08T11:07:29",
"content": "YEs, high speed cnc would be cool. Cncn speed competition!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414630",
"author": "Tony",
"timestamp": "2011-07-08T11:13:50",
"content": "@silvesterstillalone, do they even make radial arm saws anymore? Or are they just a US thing? (Never seen one in my part of the world.)And @jh, you’re an idiot. If you think a good grip can prevent kickback, well, good luck with that.The main problem with power tools is complacency, as the guy using the saw shows. “Hey, look how cool this is!”. You only need to be distracted for a split second for something to go wrong. Showing off in front of a camera doesn’t help.All you need is for him to be leaning over the blade to grab the bits he just cut, and be bumped by the people behind him. A guard would have saved his fingers, contrary to what the manly “I don’t need no stinking guard” posters are saying.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414633",
"author": "Pete",
"timestamp": "2011-07-08T11:45:58",
"content": "@Octacon2k“Bullshit. Come on, if, at the end of a cut, there’s only millimeters of material left to hold both pieces together, nothing will stop them from closing in on each other but a riving knife. Not much of a closing is needed for kickback, just a hair, touch the blade and off it goes.”If we define the kickback force as F=ma then you can see that a cut leaving a millimeter of FR-4 wanging off the side of your cut, if it does come into a “hair” of contact with the back of the blade, will not generate a force great enough to overcome the force of push through the cut. However, a properly sized riving knife would not hurt things here, it just would never come into contact with the FR4 material during the cut.The point of my comment was not to discourage the use of riving knives but, to point out there are other safety issues that require more immediate attention such as eye and lung protection.My knowledge of riving knives came from a conversation with a professional woodworker 2 weekends ago when I was using his table saw to cut some “stickers” that we were using to “sticker”http://ohioline.osu.edu/for-fact/0008.htmlsome lumber we had cut on his saw mill. This is a video of me tentatively cutting on the sawmill.http://youtu.be/CwfPZNRoyf8Although we didn’t discuss cutting FR4 on a table saw, we talked about how riving knives work and why you need one or don’t. He did not, at the time have one on his table saw but he pointed out he uses mostly stable lumber and a high quality blade that he keeps sharp. Even with my limited experience using table saws I can say that I could tell his saw blade was very sharp by the sound of the motor and feed rate I was pushing the material through. Also, I used a pushstick :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414641",
"author": "Techartisan",
"timestamp": "2011-07-08T12:41:08",
"content": "http://www.youtube.com/watch?v=E3mzhvMgrLE&feature=player_detailpage",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414648",
"author": "Tony",
"timestamp": "2011-07-08T13:10:58",
"content": "@Techartisan, SawStop would be great if its inventor wasn’t an A-grade 5-star a-hole.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414681",
"author": "KanchoBlindside",
"timestamp": "2011-07-08T14:20:25",
"content": "@ Mikhail Bakunin: Barely.Not enough is known about fiberglass dust inhalation. For the time being, the answer is “no”http://www.idph.state.il.us/envhealth/factsheets/fiberglass.htmhttp://www.woodpreservers.com/pdf/FiberglassPole_MSDS.pdfhttp://www.netwellness.org/question.cfm/65688.htm",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414724",
"author": "Otacon2k",
"timestamp": "2011-07-08T15:49:19",
"content": "@PeteI am not sure if we mean the same thing here. I wasn’t talking about a cut leaving a millimeter of material at the side. I meant that, when the cut is nearly done and there’s only a tiny bit of material holding the two halves together in the front, then there’s a serious risk of the two halves closing in on each other behind the sawblade. Which could then lead to kickback.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414728",
"author": "Oren Beck",
"timestamp": "2011-07-08T15:58:13",
"content": "Safety is an overarching concept of risk evaluations and sane responses to those evaluations. One neat Hack on Cancer causing chemicals might be a Cancer Resistant Rat? That’s the point. Riving knives for stuff where there’s a risk is common sense. In the case of a TINY board compared to a 4X8 sheet of plywood, that knife may run into scaling factor issues. NOT to discount it’s value even on small workpieces, but to restate the TOTAL evaluation concept.By the most uberparanoid rules, those sharp corners on their saw’s table are a hazard. In the end game of such zero tolerance for any risk- all corners should be rounded,padded etc like Larry Niven’s “Puppeteer” aliens designed everything in their worlds.Butter Knife= OSHA approved Razor Blade..Except- Homo “Sometimes Sapient” has a very much split mind on some things in our lives. Radically oversafe or suicidally lethal elements in the same device at times.BtW- No one so far caught the glitch in my mention of SawStop. SS works by conductive detection of whatever flesh is endangered. Circuit board foil would instantly and financially painfully trigger that AL wedgie into the blade..",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,147.746717
|
||
https://hackaday.com/2011/07/07/minecraft-is-now-a-3d-design-tool/
|
Minecraft Is Now A 3d Design Tool
|
Brian Benchoff
|
[
"cnc hacks"
] |
[
"3d printer",
"cnc",
"minecraft",
"python"
] |
[Cody Sumter] and [Jason Boggess] are students at the MIT Media Lab, and they just came up with
Minecraft.Print()
, an attempt to create a bridge between Minecraft and the real world via 3D Printers.
The print is first prepared by placing obsidian, diamond, gold, and iron blocks on opposite corners of the model in Minecraft. From there, a Python script takes over and parses the world map to generate an .STL file for a RepRap or MakerBot.
So far, [Cody] and [Jason] have printed a few Companion Cubes and the model of the Enterprise D. We’re pretty impressed with the resolution of the prints, especially considering the original model is voxelated. The prints look very nice, and right now we really want to print out all the cool stuff we’ve seen, like
Isengard
,
gigantic CPU
, or maybe a
Minecraft 3D printer
.
Minecraft.Print() sure is a nice program [Cody] and [Jason] have there. It would be a shame if anything happened to it. Check out a video demo after the break.
[youtube=http://www.youtube.com/watch?v=7CLfNIZ4LNo&w=450]
| 19
| 19
|
[
{
"comment_id": "414388",
"author": "Finger",
"timestamp": "2011-07-07T21:21:58",
"content": "Between the companion cube and the Enterprise – D, they’ve just made my day ^____^",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414397",
"author": "xorpunk",
"timestamp": "2011-07-07T21:49:13",
"content": "now people wont be just making the authors rich all day..The animation system looks fun, I’ve never played it..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414399",
"author": "Xenthis",
"timestamp": "2011-07-07T21:55:59",
"content": "@FingerAgree 100%",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414403",
"author": "mad_max",
"timestamp": "2011-07-07T22:03:13",
"content": "Awesome, can’t wait to see somebody print the Deadmau5 head!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414405",
"author": "CRJEEA",
"timestamp": "2011-07-07T22:13:25",
"content": "This is quite incredible (:But I must add the guy who created the model of the Enterprise in mine craft must have far too much time on his hands :D good job though (: you have a seriosly large amount of patience (: but im wondering how detailed the interior of this ship was created? Would be interesting to take a wander inside (:Now to build a 3D printer large enough to print it…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414406",
"author": "Me",
"timestamp": "2011-07-07T22:14:08",
"content": "Too bad its completely pointless",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414417",
"author": "Draget",
"timestamp": "2011-07-07T22:32:30",
"content": "It should print the sheeps, too!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414426",
"author": "Hackerspacer",
"timestamp": "2011-07-07T22:37:17",
"content": "LOL @ the Yogscast reference.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414427",
"author": "aztraph",
"timestamp": "2011-07-07T22:40:47",
"content": "point for the technical expertise to pull this off, and getting a little token from the minecraft game. but seriously, how much time did it take to build the stuff in minecraft. i tried playing it before, took forever and gave me a headache. mega points for building something like that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414431",
"author": "Hackerspacer",
"timestamp": "2011-07-07T22:44:48",
"content": "MCEdit allows you to do things like import files, build large swaths of blocks at a time. It’s not like they went and mined for iron then made picks then mined for the materials and then placed every single block.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414464",
"author": "Andy",
"timestamp": "2011-07-08T00:31:17",
"content": "That is amazing.Bring on the days when it can make redstone into actual circuits (That would be very hard, but impressive!)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414501",
"author": "Winston",
"timestamp": "2011-07-08T03:04:21",
"content": "that was SSSOOOO!!!! f_ckin’ sweet! a game that allows you to build anything you can imagine with a printer that will (print) it for you. now for the sick people to make life size sex dolls with it….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414545",
"author": "t&p",
"timestamp": "2011-07-08T05:47:35",
"content": "NOOO I want to see the enterprise in the gameand how they made it",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414550",
"author": "Necromant",
"timestamp": "2011-07-08T06:13:53",
"content": "Minecraft: worst CAD ever!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414576",
"author": "anonymous",
"timestamp": "2011-07-08T07:31:17",
"content": "My first thought upon seeing that picture is “We heard you liked memes, so we designed a meme in your meme”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414636",
"author": "nimitzbrood",
"timestamp": "2011-07-08T12:25:13",
"content": "@AndyHmm…in theory you’d just need a way to swap printing materials in-process.I could easily envision a three function printhead on a reprap. One is standard plastic, the second is a fine powder sifter that drops conductive powder onto the sticky plastic. The third does vacuum pick-n-place and you could construct a solid object with a circuit inside.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415567",
"author": "mike",
"timestamp": "2011-07-10T12:51:49",
"content": "“It would be a shame if anything happened to it”wtf thats pretty random. portal humor?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415652",
"author": "clb92",
"timestamp": "2011-07-10T15:53:20",
"content": "@mikeNope… A pretty “popular” sentence/imitation of a creeper in Minecraft.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "595173",
"author": "Froot",
"timestamp": "2012-03-05T08:37:49",
"content": "Time to make me a great big wang in SMP!!!!!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,148.162935
|
||
https://hackaday.com/2011/07/07/update-playing-piano-with-optical-sensors/
|
UPDATE: Playing Piano With Optical Sensors
|
Mike Szczys
|
[
"Musical Hacks"
] |
[
"keyboard",
"reflectance",
"reflective sensor"
] |
[Sebastian Steppeler] has been hard at work on his
optical sensors for an electric piano
. When we looked in on the project back in October
he was testing reflective sensors
to increase responsiveness and MIDI data resolution for his electric keyboard. Since then he’s finalized the sensor circuits and produced enough boards to monitor all 88 keys on this full keyboard. You can see the string of PCBs just above the ivories, waiting to be installed. Not only are then in, but he also added sensors for the pedals.
Because the boards were installed by hand, there are some variances in the physical placement. This can have a rather dramatic effect on the readings from the reflective sensors so he has been working out a method of balancing the calibration. Part of this is already being taken care of by the C# interface that he wrote for a PC. Take a few minutes to check out
all of his blog posts
, then jump down after the break and hear how great it sounds.
[youtube=http://www.youtube.com/watch?v=Asjjw7bALeI&w=470]
| 7
| 7
|
[
{
"comment_id": "414376",
"author": "John P",
"timestamp": "2011-07-07T20:43:33",
"content": "Will there be files posted? i.e. pcb/code?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414398",
"author": "CRJEEA",
"timestamp": "2011-07-07T21:55:29",
"content": "Bravo well done nice performance, I really wish I could play that well (: (I do beilive that I am inneed a little more time to practice though)Secondly: nice hack seems to work very smoothly (:",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414481",
"author": "ejonesss",
"timestamp": "2011-07-08T01:41:37",
"content": "thats nothing new the nintendo uforce worked the same way",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414605",
"author": "sebion",
"timestamp": "2011-07-08T09:00:14",
"content": "@John P: If there is enough interest I will think about cleaning up the code and releasing it as open source hardware.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414639",
"author": "blue carbuncle",
"timestamp": "2011-07-08T12:37:56",
"content": "Good work! It can be quite hard to “nail” the notes on a theremin. I imagine it is much easier for a robot with all of their exact measurements and such. Neat to watch as well! Just the kind of thing Lev would have loved to have seen :) Keep up the nice project!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414642",
"author": "blue carbuncle",
"timestamp": "2011-07-08T12:43:59",
"content": "D’oh had two tabs open to comment on. Maybe Caleb or someone can remove my other post. Had yours open too to congratulate you on the hard work! Man, I wish I had your follow-through ability. I had tried monkeying with improving PPQN resolution on a couple of pieces of old gear after reading about some of Squarepusher and Aphex’s gear. Didn’t have much luck (turns out it was physically impossible with the gear I was using-found out years later on “broadband” internet lol. Good on ya for coming up with a concept and following through no matter what. World needs more folks like you :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "450383",
"author": "Bernhard",
"timestamp": "2011-09-08T09:51:38",
"content": "good work and interesting project to play a piano",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,148.108974
|
||
https://hackaday.com/2011/07/07/ardudelta-would-make-a-great-pick-and-place-machine/
|
ArduDelta Would Make A Great Pick And Place Machine
|
Brian Benchoff
|
[
"Arduino Hacks",
"Robots Hacks"
] |
[
"arduino",
"delta",
"delta robot",
"pick and place",
"robot"
] |
[Bogdan] sent in a great build of a delta robot
he originally posted on the Arduino forum
, but he didn’t receive much feedback there. We think a build like this deserves a lot more credit.
After working for 7 months on his robot, [Bogdan] has a pretty stable (and very classy) platform made out of wood. The platform and arms in delta robots are usually extremely light to reduce the inertia of the tool so [Bodan] crafted these out of carbon fiber tubes and plexiglas. Everything is controlled by an Arduino Mega2560 encased in a plexiglas enclosure with a 20×4 LCD, status LEDs, and an infrared receiver.
Delta robots are known for
insane speed and precision
, and are frequently used in pick and place machines. We covered a few home-brew pick and place machines
earlier this year
, but there haven’t been many developments since. While [Bogdan]’s robot only has a pen tool right now, it would be fairly easy to put in a small suction nozzle for accurate placement of SMD components. Even if he keeps the pen tool, it’s still a very clean and professional build.
Check out the video of the ArduDelta in manual mode below.
[vimeo=http://vimeo.com/25925860]
| 23
| 23
|
[
{
"comment_id": "414348",
"author": "yetihehe",
"timestamp": "2011-07-07T19:22:38",
"content": "Fast: yes. Precise: not. Does it have Parkinson’s disease or what?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414349",
"author": "pod",
"timestamp": "2011-07-07T19:23:25",
"content": "I wonder why it is so rattly.is there any way to improve the movement, making it smoother at lower speeds?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414353",
"author": "Rambo",
"timestamp": "2011-07-07T19:32:34",
"content": "It looks like some minor PID tuning is in order to solve the movement issues, other than that, it’s pretty cool!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414354",
"author": "yetihehe",
"timestamp": "2011-07-07T19:32:39",
"content": "@pod – because those long thin carbon fiber rods act like spring. At lower speeds it would act better, but it would require smooth servo operation, it can be done through software.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414356",
"author": "MrX",
"timestamp": "2011-07-07T19:38:49",
"content": "yeah.. and the servos don’t seem to have a very good resolution either.. I think he would be better off with some strong galvos.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414358",
"author": "macona",
"timestamp": "2011-07-07T19:45:51",
"content": "Only would make a good pick and place if you did not care which part you pick up or where it goes.Arduino just cant handle the whats needed to do cnc. Stop trying people, its not going to work. Its like trying to build a race car with a lawn mower engine. Sure, it might move, and if you tweak it a little it might move faster, but in the end you just have a dog. Look at the other controllers out there, SmoothStepper, RetinaEngrave, and even the chinese laser controls. They all use FPGAs or DSPs. Even the chinese one. And if anyone would have cut a corner to make it cheaper by using a lesser processor its the chinese.EMC2 wil run this with real servos or steppers.It IS a nice start and a neat project, just put real servos or steppers on it and it will be a different machine.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414363",
"author": "Reggie",
"timestamp": "2011-07-07T20:02:46",
"content": "Its a great try for sure but it looks like it would be accurate enough to reclaim meat from animal carcasses but that’s about it. Now the proof of concept has been done it needs some tweaks to the design materials and it’ll be a damn fine tool.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414374",
"author": "biozz",
"timestamp": "2011-07-07T20:42:18",
"content": "lol i almost had a seizure just watching that thing run XDwhat made it so shaky?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414387",
"author": "hal",
"timestamp": "2011-07-07T21:19:27",
"content": "An old serial mouse with a scroll wheel might work good for manual control. X/Y from the mouse movement and Z from scroll wheel. Could be quite smooth.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414392",
"author": "Nomad",
"timestamp": "2011-07-07T21:32:48",
"content": "@hal: Using a mouse to smooth this thing is like buying a 500$ acceleration pedal to make a two-stroke engine run smooth.Steppers and threaded rods would be way better.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414394",
"author": "ftorama",
"timestamp": "2011-07-07T21:37:36",
"content": "If he took the basic Arduino Servo library, he only has 256 steps for servo driving. It could explain why it’s so shakyBy implementing a custom servo driving, it’s possible to do much better. I did a 8000 steps servo driving for a precision pan&Tilt with an AVR so not a matter of Arduino, but a matter of library, I think.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414428",
"author": "Hackerspacer",
"timestamp": "2011-07-07T22:42:29",
"content": "“Steppers and threaded rods would be way better.”I think you mean precision ACME screw rods, not just threaded rods.I agree that Arduinos are really not suited for CNC type work. They make GREAT controllers for sensors or other items that don’t need a HUGE amount of I/O bandwidth or precise timing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414442",
"author": "psuedonymous",
"timestamp": "2011-07-07T23:12:52",
"content": "There’s nothing preventing an Arduino from driving a CNC machine. Accept g-code commands, output motor commands is hardly an arduous task for any machine geometry you’re likely to be building on a budget (read:if you;re building a 5-axis metal-chewing monster, you;re probably spending thousands already and aren’t really going to be bothering with a DIY controller). For stepper-based machines with or without linear or rotary encoders an Ardino is more than sufficient (RAMPS is one of the more popular ways to drive a RepRap and inevitable gets roped into mini-mills). Servo control with the Arduino alone maybe trickier, but by using external servo libraries, or a handful of servo controller chips (value -> PWM), you can cover most machine geometries.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414465",
"author": "Kevin Gunn",
"timestamp": "2011-07-08T00:34:24",
"content": "The Arduino drives my Makerbot Cupcake just fine. Three steppers plus heater control for the nozzle and the build platform plus temperature sensors plus the filament feed motor.No reason it can’t drive other kinds of CNC systems as well.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414473",
"author": "macona",
"timestamp": "2011-07-08T01:18:03",
"content": "Sure the arduino can run a cupcake. Those things alow, slow, slow. Not useable for a machine tool or a laser cutter.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414503",
"author": "Dave",
"timestamp": "2011-07-08T03:05:26",
"content": "Wow, remind me never to submit anything of my own to Hack a Day.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414507",
"author": "Chris",
"timestamp": "2011-07-08T03:09:22",
"content": "Seems like in manual/record mode, each button press causes the device to attempt to move instantaneously in a fairly coarse step. The sudden start and stop of motion then causes the carbon rods to bounce quite a bit.In playback mode, motion is smoother because there’s less time between steps. But as far as my eye can see, I think it’s still coarse steps with little or no interpolation between them.Adding interpolation, maybe some other software tuning, and switching from carbon fiber rods to thin-wall aluminum tubes would probably improve this dramatically.Interfacing to the servo motors and pots directly (instead of using the servo’s built-in circuit) with a good PID loop would improve it even further.There are always improvements to be made. But getting this far is impressive by itself!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414514",
"author": "JohnBailey",
"timestamp": "2011-07-08T03:43:06",
"content": "@DaveThe word Arduino brings out the “real engineers” for some reason. I’m surprised someone hasn’t mentioned how they could do it better with an 8 pin PIC chip, two resistors and a serial cable. And assembly being the only way to go.Best practice is to view the comments section as a form of entertainment rather than information.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414541",
"author": "dhon",
"timestamp": "2011-07-08T05:31:55",
"content": "@macona, have you seen the Ultimaker? Also driven by an Arduino and much faster than a Cupcake. Arduino might not be the _best_ tool for CNC, but just because it’s designed to be easy to use, doesn’t mean it can’t be powerful. AVRs have much better timing accuracy than the average PC running realtime linux.This project is a great demonstration of mapping the X, Y, Z coordinate space into delta controls (no easy feat). The pitfall seems to be the use of low resolution servos (and perhaps the std Arduino servo library). The irregular movement of the arms, would be due to the servos constantly hunting for position I would say.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414599",
"author": "tinkermonkey",
"timestamp": "2011-07-08T08:18:44",
"content": "This is a Great project!!!solving the X Y Z coordinates into a delta system in a small amount of code takes real skills. I for one would like to see your code.Mechanical problems that reduce repeatability are not unusual and take a great deal of effort (as in rebuilds) to resolve. A little preload to change the stress on your positioning members from compression to tensile might resolve some of your difficulties while keeping everything light weight.this is a Great job showing a tremendous skill set.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414621",
"author": "xchip",
"timestamp": "2011-07-08T10:26:00",
"content": "To this guys that are so negative/destructive… I’d like to see what sort of things do you build… they must be awesome!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414712",
"author": "svofski",
"timestamp": "2011-07-08T15:28:23",
"content": "There’s nothing to blame Arduino for here. The weakest link is the RC servo, even the best ones have like 1/10th of necessary resolution and huge play; also without feedback the movement will always be jerky. Been there, done that.@tinkermonkey: you can check out my delta bot math and code on my page. Verified by applet and by a real bot. It’s really simple once you break it down.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414816",
"author": "James",
"timestamp": "2011-07-08T18:17:34",
"content": "I laughed when I saw Ardu- and great in the same sentence. :D",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,147.802398
|
||
https://hackaday.com/2011/07/07/hacking-and-rolling-at-the-red-bull-creation-challenge/
|
Hacking And Rolling At The Red Bull Creation Challenge
|
Mike Nathan
|
[
"contests"
] |
[
"badge hacking",
"contests",
"funny",
"red bull"
] |
The crew over at the HarfordHackerspace used their wits and creativity to land a spot at the final round of Red Bull’s Creation challenge.
The team arrived in Brooklyn just yesterday
, ready to take on all comers in the 72-hour hacking challenge which kicked off earlier this morning.
Like any other hacker convention, the Red Bull challenge sports its own unique guest badges just begging to be poked, prodded, and otherwise fooled with. Once the team arrived in New York they were given theirs, and after the opening festivities came to a close, the hacking began. The badges were putting out what looked like Morse code messages via a single red LED, and while part of the team worked to record and decode the message, others started reverse engineering the badge’s on-board PIC.
They were successfully able to bypass the PIC’s fuses to read the code inside, and what they found was pretty funny. You will have to follow the link above to find out what it was, but rest assured, the Red Bull folks definitely have a decent sense of humor.
| 5
| 5
|
[
{
"comment_id": "414327",
"author": "bsom",
"timestamp": "2011-07-07T18:20:44",
"content": "We are HarfordHackerspace.org, not NartfordHackerspace. :-) Happens all the time :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414328",
"author": "bsom",
"timestamp": "2011-07-07T18:21:13",
"content": "I mean not HartfordHackerspace. Even I get our name wrong! DOH!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414333",
"author": "andar_b",
"timestamp": "2011-07-07T18:44:19",
"content": "Sorry but I ROFLMAOed so hard at Nartford for some reason! Still laughing uncontrollably.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414575",
"author": "GuiltyPixel",
"timestamp": "2011-07-08T07:25:56",
"content": "NARF!Kudos to Red Bull for that one :p",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414933",
"author": "Concerned",
"timestamp": "2011-07-08T21:56:46",
"content": "Red bull. Riding the very crest of cutting edge comedy. To the extreme.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,148.252537
|
||
https://hackaday.com/2011/07/07/infrared-control-for-appliances/
|
Infrared Control For Appliances
|
Brian Benchoff
|
[
"classic hacks"
] |
[
"decade counter",
"infrared",
"tsop1738"
] |
[RB] at Embedded Lab sent in a great guide on how to
control appliances with a remote control
using a really clever implementation of a decade counter and IR receiver.
The
build
itself is very simple – just a relay connected to mains power and a handful of resistors and transistors. The device is controlled with a decade counter and an infrared module usually found tucked away in the bezel of a TV.
When everything is plugged in, the first pulse from the remote switches the relay on, providing power to the outlet. When a second pulse is received, the reset pin on the decade counter is activated, setting the device back to its original off state. It’s a pretty clever build, and could be built with parts lying around the bench.
The project is powered through wall power with the help of a transformer and a 7805 regulator, but we think the size could be reduced with a pass-through power enclosure – the circuit certainly is small enough. In all, a very nice, low component count build.
| 10
| 10
|
[
{
"comment_id": "414300",
"author": "Rock Salt Lamps",
"timestamp": "2011-07-07T17:35:30",
"content": "Great work good keep it up.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414301",
"author": "True Lover's",
"timestamp": "2011-07-07T17:36:08",
"content": "I like that….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414306",
"author": "fartface",
"timestamp": "2011-07-07T17:53:20",
"content": "http://www.amazon.com/IR-543-X10-Command-Console-Usa/dp/B000BOLDKG/ref=sr_1_1?ie=UTF8&qid=1310061166&sr=8-1and kind of control lots of lights.Kind of because X10 is the crappiest control system ever invented.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414344",
"author": "Chet",
"timestamp": "2011-07-07T19:01:09",
"content": "So the light will go on/off any time it gets a modulated IR signal? No much use in a room with a tv, hifi etc!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414366",
"author": "that1guy",
"timestamp": "2011-07-07T20:15:05",
"content": "I have that exact X10 IR module and a few X10’s controlling lights and lamps. I will agree that it’s essentially a really bad control system and susceptible to all kinds of noise and interference. However, it works well enough in my apt so that I don’t need to go out of my way to build something.Cool hack though, very useful.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414368",
"author": "Tweeks",
"timestamp": "2011-07-07T20:20:13",
"content": "While most of X10’s components are indeed crap.. if you spend a little more and get one of these nice, multi-home-code RF receivers with dedicated coax antenna:http://www.wgldesigns.com/v572.htmlThen X10 ends up working MUCH more reliably/smoothly. Add a few SmartHome/INSTEON components and things really start working smoothly. :)If you really want nice stuff.. Look into the newer UPB standard and devices:http://digitalavnew.com/what_is_upb.htmTweeks",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414490",
"author": "SuperNuRd",
"timestamp": "2011-07-08T02:36:36",
"content": "The world is now reaching a high point in laziness!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414539",
"author": "David Stonely",
"timestamp": "2011-07-08T05:23:44",
"content": "Kind of primitive, but good idea.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414551",
"author": "elektrophreak",
"timestamp": "2011-07-08T06:16:01",
"content": "here are two DIY alternatives that are IR noise-immune:http://bit.ly/ccE1bSandhttp://bit.ly/cgNKuK",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414578",
"author": "Bogdan",
"timestamp": "2011-07-08T07:35:51",
"content": "Back when i was in high school i built something similar. It had 2 lamps to control and cycled through 4 states: all off, lamp 1 on, lamp 2 on, both on. The design was similar except that i bought two receivers, one in the 38KHz range and one in the 56KHz range to test which reacts to my TV tuner remote(the only one i used in that room). Then i used the other one for the project and made a simple emitter with a 555. The project is simple, but not practical. We need micros for this!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,147.849368
|
||
https://hackaday.com/2011/07/07/play-dress-up-with-kinect/
|
Play Dress Up With Kinect
|
Mike Nathan
|
[
"Kinect hacks",
"Xbox Hacks"
] |
[
"Kinect",
"openni",
"virtual"
] |
While we have seen Kinect-based virtual dressing rooms before, the team at Arbuzz is
taking a slightly different approach
(
Translation
) to the digital dress up game. Rather than using flat images of clothes superimposed on the subject’s body, their solution uses full 3D models of the clothing to achieve the desired effect. This method allows them to create a more true to life experience, where the clothing follows the subject around, flowing naturally with the user’s movements.
Like many other Kinect hacks, they use openNI and NITE to obtain skeletal data from the sensor. The application itself was written in C# with Microsoft’s XNA game development tools, and uses a special physics engine to render the simulated cloth in a realistic fashion
[Lukasz] says that the system is still in its infancy, and will require plenty of work before they are completely happy with the results. From where we’re sitting, the demo video embedded below is pretty neat, even if it is a bit rough around the edges. We were particularly pleased to see the Xbox’s native Kinect interface put to work in a DIY project, and we are quite interested to see how things look once they put the final touches on it.
[vimeo http://vimeo.com/25933286 w=470]
| 20
| 20
|
[
{
"comment_id": "414263",
"author": "z",
"timestamp": "2011-07-07T16:20:08",
"content": "This website should be called “Kinect a Day”.I’m not trying to be negative, but surely there is more news than this Kinect news?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414264",
"author": "Jay",
"timestamp": "2011-07-07T16:21:50",
"content": "Very nicely done! The dancing frightened me, at first, but all was forgiven as the video went on.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414267",
"author": "facefart",
"timestamp": "2011-07-07T16:27:26",
"content": "z, a solution for youStep 1) Make something coolStep 2) Submit to hackadayStep 3) ???Step 4) See less Kinect stuff, do less bitching",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414269",
"author": "Mike",
"timestamp": "2011-07-07T16:30:05",
"content": "That is pretty cool. Hope he polishes it and gets rich off it.@facefartLOL :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414273",
"author": "andar_b",
"timestamp": "2011-07-07T16:35:00",
"content": "@Jay – You weren’t frightened by the virtual women’s clothing on the guy? The skirt was particularly odd, but the effect was kinda cool. Modify it to use armor from a game like Dragon Age or something, and it would be quite a bit more interesting to me.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414274",
"author": "M",
"timestamp": "2011-07-07T16:35:21",
"content": "Holy cow, that will be easy to monetize! Good work!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414277",
"author": "sariel",
"timestamp": "2011-07-07T16:41:56",
"content": "@zit’s a popular piece of hardware atm. when arduinos were popular there was one posted every day. now its kinect. lern 2 ride teh cool wave brah!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414278",
"author": "James",
"timestamp": "2011-07-07T16:42:25",
"content": "It’s nice but it needs a lot of work and I’m not sure the kinect can offer the resolution required for it, I could be wrong. Clothes fitting is (at least for me) a fine art – and I’m no fashion guru. But a fault can be as small as how this hangs aruond your particular leg shape, or how this colour works with your skin colour and without decent 3d mapping of body curves and colour matching it#s going to be nothing but a gimmick. A fun one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414287",
"author": "fartface",
"timestamp": "2011-07-07T16:59:28",
"content": "I really wonder when people will be able to get that horrible lag out of the Kenect. Is it that these guys all own horribly slow PC’s or does the Kenect it’s self lag that badly?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414288",
"author": "Reggie",
"timestamp": "2011-07-07T17:00:59",
"content": "@ James, I think there are some issues for a start because the guy is fully clothed already, the virtual clothing looks like its one size fits all as well, its a proof of concept, so when it’s cleaned up I would expect there to be a way to choose a size that fits your shape better and make the whole experience a lot more rewarding. I fully expect the updated version to use 2 kinects so he can give us a twirl :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414293",
"author": "tooth",
"timestamp": "2011-07-07T17:13:02",
"content": "i like how he selected women’s clothing. also the dancing was nice for change instead of being all stiff. the non emotion on his face and contraction was kind of funny when he was dancing.@james he could of done it in a speedo to get a better fit. but i don’t think i would of liked the video as mush lol.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414295",
"author": "rasz",
"timestamp": "2011-07-07T17:17:11",
"content": "There were systems like this before for virtual cloth fitting, but they were computationally expensive and difficult to set up (multiple cameras and so on).This should be easy to set up in a shop window so passing by women stop and try clothes = instant shop magnet.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414303",
"author": "Chris",
"timestamp": "2011-07-07T17:51:18",
"content": "Takes a braver man than most to dance around like that in a virtual skirt on the Internet. :)It works pretty well. Might be interesting to compare video frames to distinguish background from person (and existing clothes), and stretch the virtual clothing a bit to cover better.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414343",
"author": "t&p",
"timestamp": "2011-07-07T18:58:22",
"content": "The video was very strange. The dude was very strange.But yeah that one dude could get full speed in his slow microcontroller to play pong and an old camera.Then you have a cutting edge microsoft product running windows.There shouldn’t be any lag.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414360",
"author": "Hirudinea",
"timestamp": "2011-07-07T19:47:52",
"content": "I’ed like to see somthing for video chat, I think it would be neat to chat in real time as a gorilla.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414420",
"author": "aztraph",
"timestamp": "2011-07-07T22:33:38",
"content": "does it come in plus sizes?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414596",
"author": "p.",
"timestamp": "2011-07-08T08:17:10",
"content": "Could anyone tell me what’s the name of the creator?Lukasz …?Thx",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416391",
"author": "Dan Fruzzetti",
"timestamp": "2011-07-12T03:35:35",
"content": "He has to model the shirt first so the kinect can take his 3d picture, right? or could anyone / any mannequin model it and still produce a decent 3d model on him?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "566101",
"author": "Ash",
"timestamp": "2012-01-24T08:34:07",
"content": "great work i am currently working on augmented reality its pretty hard to make software!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "2602532",
"author": "siva",
"timestamp": "2015-06-10T07:16:34",
"content": "Great work, could you please let me know the special physics engine that you have used for this app",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,148.309419
|
||
https://hackaday.com/2011/07/07/use-bluetooth-to-open-your-garage-and-start-your-car-remotely/
|
Use Bluetooth To Open Your Garage And Start Your Car Remotely
|
Mike Nathan
|
[
"Android Hacks"
] |
[
"android",
"bluetooth",
"home automation",
"remote control"
] |
Instructables user [tcollinsworth] is a big fan of his Android smart phone. He practically carries it with him everywhere, so he figured it would be cool to
integrate as many of his home electronics with the phone as possible
. His garage door openers seemed like easy enough targets, and while he was in the garage, he decided to hack his car’s remote starter as well.
He put together a small circuit that allows him to trigger any device via an application called Daisy On/Off, made specifically for the Bluetooth board he selected. One set of pins were wired to the garage door opener’s terminals, and the other to his remote start key fob. Once he had everything connected up, he packaged his components in a project box courtesy of his MakerBot. With that finished, he put together a simple interface in the Daisy application which can start his car or open the garage with a single button press.
It should be mentioned that [tcollinsworth] works for Daisy, so the reasoning behind his choice of components and Android applications is an obvious one. That said, schematics for the Daisy Bluetooth board are available online and the device can be controlled using BlueTerm, so you can feel free to roll your own implementation if you wish.
Our only nagging thought is that the system should probably include a feedback circuit that relays messages to the phone, indicating that the door is indeed open and that the car has been started. Pocket dialing your car to start without opening the garage first would definitely be a bad thing.
Check out the video below to see the system in action.
[youtube=http://www.youtube.com/watch?v=iklkktHuupA&w=470]
| 19
| 18
|
[
{
"comment_id": "414243",
"author": "Aaron Bitler",
"timestamp": "2011-07-07T15:41:10",
"content": "This is pretty cool, now if you could incorporate this with voice recgention that would be cool… for example:http://www.youtube.com/watch?v=eQ6Ubllw_4k",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414244",
"author": "Aaron Bitler",
"timestamp": "2011-07-07T15:42:52",
"content": "recognition*",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414249",
"author": "Cisco Sanfran",
"timestamp": "2011-07-07T15:53:32",
"content": "yeah great. remotely start your car. what the heck? go on wasting gas like there’s no tomorrow. you’re not gonna tell me a car kept in a closed garage needs defrosting or a great deal of cooling before leaving?. here in switzerland you’re not even allowed to start your car before driving only for defrosting or cooling. if we go on wasting ressources like that, humanity is doomed… (oh right, we are anyway…)",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "530722",
"author": "canid",
"timestamp": "2011-12-09T08:44:31",
"content": "Where I grew up we had to preheat the car just for the door latches to close again after opening during the winter. Alternatively of course we had a truck which did not have a properly working heater, and for that we used bungie cords to hold the doors closed while driving. Low tech solutions also work.",
"parent_id": "414249",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "414283",
"author": "Matt",
"timestamp": "2011-07-07T16:48:25",
"content": "It’s a really cool idea and I like the effort to minimize devices but I’d be a little concerned about how easy it is to pair with a Bluetooth device. Isn’t it just a 4 digit password?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414284",
"author": "Fred",
"timestamp": "2011-07-07T16:49:04",
"content": "I’ve created something similar with a Netduino controlling some lighting and my garage door. Fronted it wi both an Android UI and a simple web UI served up directly from the Netduino.I decided on WiFi to connect rather than bluetooth. This makes it more flexible as I extend it to control more round the house, and also gives me the option to expose it over the web if I want. For now I decided I keeping it local network only was better for security.This is nice as a simpler option. I agree with the other posts about starting the car though. Who wants to come out to a garage full of carbon monoxide?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414292",
"author": "Paul",
"timestamp": "2011-07-07T17:08:36",
"content": "Cisco, why do you care what someone else does? If you don’t like it don’t do it yourself. If this guy wants to use fuel to warm his car so what? I only looked over the article but I doubt it indicates he will be using the remote ignition in the garage, just because you have a garage doesn’t mean you will use the remote starter in the garage. I have a garage and my cars don’t even go in there!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414302",
"author": "steve",
"timestamp": "2011-07-07T17:48:46",
"content": ">why do you care what someone else does?Maybe because he ruins the very same planet that the rest of people is living on?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414330",
"author": "Cisco Sanfran",
"timestamp": "2011-07-07T18:27:30",
"content": "generally the remote controlling part is great. really. but i just don’t get the part with remote starting a car. i know the equipment to do that is sold, but imho it’s just so ignorant and selfish.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414335",
"author": "sowhat",
"timestamp": "2011-07-07T18:46:16",
"content": "Cisco, no offense, it does not affect you and its his prerogative to warm up his car in the morning.I live in Minnesota, and it can be cold as f**k during the winter. My car is in the garage over night but the garage temp can drop down into the teens or below. Every morning before I leave, I warm up the car so that my kids and I don’t freeze on the way to school. Selfish and ignorant? I think not.Your blasting of his actions without knowing his situation sounds ignorant, imho.The article says he works for the company where the bluetooth dongle comes from. I checked out their site and they are located in Rochester, NY. It is cold as hell there as well. I can see the desire to warm up the car before leaving in the morning.And for those people in hot climates like Arizona or New Mexico, I would find it totally reasonable to start the car ahead of time to cool it off. There’s no pain like bare skin on hot leather.You say: “here in switzerland you’re not even allowed to start your car before driving only for defrosting or cooling.”That is probably the exact thing this guy is doing, so whats the problem?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414336",
"author": "Bergo",
"timestamp": "2011-07-07T18:47:37",
"content": "@Cisco SanfranIn the climate I live in, it’s nice to have a remote car starter. I have a heated garage this year, but last winter where I live, we have some days that are -40 C, cars won’t even start without an electric heater attached ot the engineblock overnight, and starting the car a few minutes early from inside my house while I get ready is realy nice. The 5-10 minutes of idleing really doesn’t use that much fuel.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414359",
"author": "Brian",
"timestamp": "2011-07-07T19:47:15",
"content": "I wrote a general purpose Bluetooth scripting app for use with embedded systems called BlueScripts. If you guys are interested in applications like this you may find it helpful.http://teholabs.com/docs/bluescripts:overview",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414443",
"author": "Andy",
"timestamp": "2011-07-07T23:25:53",
"content": "Nice.As others have said it needs some logic to sense whether in the garage/garage door closed/open for running the engine. Condition feedback to the handset would also be a worthwhile step.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414475",
"author": "Boyan",
"timestamp": "2011-07-08T01:21:14",
"content": "Any iPhone software support at all? The Daisy BT app does not exist in the restricted Apple world, yuk. What would one do with an iPhone. I would love to be able to control the board sign an iPhone?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414618",
"author": "Brian",
"timestamp": "2011-07-08T10:22:44",
"content": "@Boyan as far as I know the Bluetooth hardware in an iPhone doesn’t really have an open API. So it is very unlikely, but I don’t know for sure.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414660",
"author": "ZeUs",
"timestamp": "2011-07-08T13:23:31",
"content": "“Instructables user [tcollinsworth] is a big fan of his Android smart phone. He practically carries it with him everywhere”Wow! He must REALLY love his mobile phone to carry it around all the time!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414870",
"author": "bothersaidpooh",
"timestamp": "2011-07-08T20:02:48",
"content": "Driving the car by Bluetooth would be badass.:-)Not to mention extremely illegal. I suppose you could hide in the boot, steer, drive and park the car remotely, wait till no-one is around then exit boot and close very quickly.Just the thing for uhm, “black ops” methinks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415694",
"author": "Troy Collinsworth",
"timestamp": "2011-07-10T17:47:38",
"content": "Ok, so the first implementation wasn’t ideal, par for the course. The car starter was primarily for demonstration – visual and audio effect. Locking and unlocking the doors is not as demonstrable.I’ll be taking down the car starter and mounting one of my Daisy Arduino derivatives in each car. I plan to have it crack the windows when hot to keep the car cooler. It will automatically close them when it senses dust or rain.Using either the Android GPS (battery hog) or just the Bluetooth proximity, it will unlock the doors as I approach and lock them as I leave.Yes, the Bluetooth can be a battery hog too, but the Android app keeps it off except when necessary so it hasn’t been a problem. As for pairing and security, the device supports up to a 20 character pin code that only has to be entered once.I’ve been using the device for a while, and it is quite quick and convenient.I won’t be starting my car, wasting gas, and polluting the environment. My family tries to be environmentally conscious. We have a garden and our yard is not your typical suburban grass mono-culture. We welcome the native plants and insects like milkweed, clover, lady bugs, monarch caterpillars, and praying mantis. The kids love it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "897008",
"author": "BMW M3",
"timestamp": "2012-12-04T16:15:38",
"content": "you people are epic dicks, crying about planet being destroyed, wasting gas and bla bla bla. maybe you should look at your self before you criticize others. I can bet you half of you people waste a lot more stuff then he does. he didnt just connect his car with bluetooth to start in his garage he can start it anywhere like if hes at work and get off and its freezing outside he can start his car before he comes. THINK you RETARDS.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,148.473523
|
||
https://hackaday.com/2011/07/07/vfd-hacking/
|
VFD Hacking
|
Mike Nathan
|
[
"Misc Hacks"
] |
[
"reverse engineering",
"vfd"
] |
[Mostafa] was a bit bored and had a broken DVD player sitting around, so he decided to take it apart
to see what made the machine’s LCD panel tick
. Once he popped it open, he discovered it wasn’t an LCD panel at all, it was a VFD.
The seven segment display looked to be controlled by an ET16312n VFD driver, so he dug around online and found a datasheet for the chip. After looking at the documentation he was pretty confident he could get things working without too much trouble. He started tracing the board for the STB, CLK, Din, and Dout leads he needed to set up serial communications with the panel and was on his way in no time.
He hooked the panel up to the parallel port on his computer, and got busy hammering out some C code to write text to the display. Right now, the code lets you scroll text across the display, which is about as far as [Mostafa] cares to take it. It was done mostly as a proof of concept exercise, but since this VFD is compliant with the same NEC programming standard that most VFDs use, his code can likely be reused to drive any similar display with very little tweaking.
| 10
| 10
|
[
{
"comment_id": "414195",
"author": "Techie",
"timestamp": "2011-07-07T14:26:57",
"content": "Nice hack… Even better, he uses a Mac.. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414198",
"author": "andar_b",
"timestamp": "2011-07-07T14:29:26",
"content": "I could be wrong, but those look like more than 7-segment character displays…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414199",
"author": "Mike Nathan",
"timestamp": "2011-07-07T14:30:58",
"content": "Whoops, did I write that?They are 16-seg displays with 7 digits. Thanks for catching that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414216",
"author": "Tweeks",
"timestamp": "2011-07-07T14:53:37",
"content": "Man I love VFDs. :)Tweeks",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414236",
"author": "Lovro",
"timestamp": "2011-07-07T15:21:26",
"content": "link is dead…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414246",
"author": "jordan",
"timestamp": "2011-07-07T15:50:18",
"content": "VFDs are awesome!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414291",
"author": "Joel Rebello",
"timestamp": "2011-07-07T17:08:06",
"content": "> He hooked the panel up to the serial port on his computer,The original article says he hooked it to the parallel port..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414310",
"author": "Mike Nathan",
"timestamp": "2011-07-07T18:04:15",
"content": "Meh, details!Thanks for the catch, I knew it was his parallel port and at some point changed it during editing. Corrected.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414312",
"author": "Wizzard",
"timestamp": "2011-07-07T18:06:30",
"content": "Confused a VFD for an LCD? I can see confusing an OLED, but he thought it was an LCD? Nice hack anyways.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414367",
"author": "WeblionX",
"timestamp": "2011-07-07T20:16:59",
"content": "A VFD with serial input? That’s nice. The one’s I’ve scrounged had no controller at all, except for one which used odd voltages and more than a serial strobe-in input. I wound up making my own control circuitry for one, once, using an Arduino and high-voltage output serial-shift-reg drivers. Had to rotate through the 8 plates constantly to use the entire display.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,148.412839
|
||
https://hackaday.com/2011/07/07/smile-your-face-is-on-the-internet/
|
Smile, Your Face Is On The Internet
|
Mike Szczys
|
[
"computer hacks",
"digital cameras hacks"
] |
[
"apple store",
"face recognition",
"internet",
"picture",
"webcam"
] |
[Kyle McDonald] is up to a bit of no-good with a little piece of software he wrote. He’s been installing it on public computers all over New York City. It uses the webcam found in pretty much every new computer out there to detect when a face is in frame, then
takes a picture and uploads it to the Internet
.
We’ve embedded a video after the break that describes the process. From [Kyle’s] comments about the video it seems that he asked a security guard at the Apple store if it was okay to take pictures and he encouraged it. We guess it could be worse, if this were a key logger you’d be sorry for checking your email (or, god forbid, banking) on a public machine. Instead of being malicious, [Kyle] took a string of the images, adjusted them so that the faces were all aligned and the same size, and then rolled them into the latter half of his video.
[vimeo http://vimeo.com/25958231 w=470]
| 98
| 50
|
[
{
"comment_id": "414112",
"author": "Me",
"timestamp": "2011-07-07T12:12:53",
"content": "Would have been very cool if he’d made the public exhibition show a live video feed of another of the public computers.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414115",
"author": "third",
"timestamp": "2011-07-07T12:17:05",
"content": "Holy invasion of privacy, Batman!Not only did he take thousands of photos of people without their knowledge or consent and post them on the internet, he also annoyed thousands more potential customers simply looking for a Mac with his ‘public exhibition’.Let it be known to the world:Kyle McDonald is a twat.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414121",
"author": "nuit",
"timestamp": "2011-07-07T12:27:49",
"content": "i once clustered a few macs in different mac stores for some math calculations…coz..they where just standing around, so why not using calculationtime ;)but that….damned…not nice",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414125",
"author": "mavis311",
"timestamp": "2011-07-07T12:29:34",
"content": "First of all:@third: These people are in public and have little to no expectation of privacy. Ask any judge in the land. As such, Kyle is rubber and you are glue; you name-calling child.Also, anyone who can annoy folks shopping for Macs has my appreciation.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414126",
"author": "1000100 1000001 1010110 1000101",
"timestamp": "2011-07-07T12:35:14",
"content": "Anyone trying to hack into the built-in webcam on my laptop will be disappointed in seeing the sticky side of electrical tape…Then again, if I didn’t have the webcam covered, and a hacker saw me, they’d be really disappointed……hmm.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414127",
"author": "twitch",
"timestamp": "2011-07-07T12:36:05",
"content": "I can hardly believe that this guy would then go and announce who he is to all of these people he is putting on the net. Its cool and scary at the same time. I bet this Kyle guy is some sort of psycho stalker and wrote this to spy on his girlfriend who left him. Just kidding Kyle(looks into camera….wonders if its on….)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414128",
"author": "jeremy",
"timestamp": "2011-07-07T12:36:20",
"content": "And how or why would someone have an expectation of privacy in an Apple Store? When you are in a public space anyone can take your picture without consent.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414129",
"author": "Zotman",
"timestamp": "2011-07-07T12:37:50",
"content": "Yeah… I second @third.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414134",
"author": "Mike",
"timestamp": "2011-07-07T12:43:44",
"content": "I agree with the first poster. Hope he gets sued.Although there is no reasonable expectation of privacy in a public place, it is not reasonable to take your picture without consent and publish it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414135",
"author": "Vampyredh",
"timestamp": "2011-07-07T12:44:04",
"content": "Well if any hacker decided to hack my cam all they would see is a middle aged old guy wearing superman pajamas, drinking a coke smoking(not saying what) watching the news or reading hackaday.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "955826",
"author": "Jessica Lynn Fleming Vent",
"timestamp": "2013-02-07T07:02:01",
"content": ":) superman jammies n smoking w mtn dew :)",
"parent_id": "414135",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "414138",
"author": "Grovenstien",
"timestamp": "2011-07-07T12:51:38",
"content": "People pay to see me on a Web cam! Yeah baby!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414139",
"author": "localroger",
"timestamp": "2011-07-07T12:51:47",
"content": "Hey, it’s the Venn diagram intersection of hacking and being a dick.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414141",
"author": "lordicewind",
"timestamp": "2011-07-07T12:53:15",
"content": "At least do it right – upload that pic stream to facebook and let it to its work so those “strangers” see the art, too. My bet is they won’t be so happy ^^Honestly, I don’t get how people think invading others’ privacy fun. This is not even remotely for the sake of something journalistic.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414145",
"author": "GilTheARM",
"timestamp": "2011-07-07T12:58:51",
"content": "Then there’s the whole deal about the reflections of the screen on his glasses, and other glasses that happen to be angled a bit better…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414146",
"author": "hmbemis",
"timestamp": "2011-07-07T13:04:08",
"content": "The webcam on my Lenovo has a fairly bright LED next to it that illuminates whenever it is active… even to take just a snap shot it comes on for a good second.I believe these Macs have the same… so if has these cams on all the time waiting for a “face” then that should mean the LED is on… in that case a savvy user ought to know the camera is on… a non-savvy user of course would not.I wouldn’t be happy knowing that my face was used for something like this w/o my consent, it’s creepy…That said, I intend to sit and smile oddly while looking at my PC from now on…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414152",
"author": "Alex",
"timestamp": "2011-07-07T13:12:37",
"content": "Welcome to the intersection of what is possible and what is ethical, the ethics are a subset of possibility.It depends on how you look at it, as previous posters have said, how can you expect privacy in a public place. With all the CCTV and such, But to counterbalance that in the uk, you can demand that photos of you are removed if you are able to notice it being taken.I will draw reference back to the google wifi problems, they were only trying to mine data for their own ends whatever they may be, but they didnt expect that they would get the reprisal they did for it.Its pretty hard to look objectively at your own project when you are the only champion of the project.As noted the scary-er thing here is key loggers, botnets, malicious activity etc.I feel for the guy, he worked hard to try and think of something new – if he broke any laws that remains to be seen.I can state that if it were me that was on the list of photos grabbed, i would be using data protection to get it removed, *if* i knew about it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414154",
"author": "fartface",
"timestamp": "2011-07-07T13:16:47",
"content": "@third I can take photos of you any time I want, in fact I can stand in the street or sidewalk and take photos of you in your home through the windows.Suck it. photos of you from a public location are legal and even more so MY PROPERTY!This is the problem most people like you know nothing about laws.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414158",
"author": "Anon",
"timestamp": "2011-07-07T13:22:40",
"content": "I really hope that Kyle goes to jail over this. These aren’t people on the street, he needs permission to take photographs.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414159",
"author": "ffffffffff",
"timestamp": "2011-07-07T13:25:14",
"content": "@localroger:The intersection? Nope. This is just the “being a dick” half. There’s really nothing here that’s interesting from a technical perspective.Just another one of these “art” projects.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414169",
"author": "RandomIdiot",
"timestamp": "2011-07-07T13:38:38",
"content": "@fartface: or, you know, laws could differ from place to place, or something weird like that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414170",
"author": "Bob",
"timestamp": "2011-07-07T13:39:24",
"content": "Public = no expectation of privacy. Even upskirt videos have been called protected speech in some states.I suggest everyone check out the Photography Is Not a Crime blog:http://www.pixiq.com/contributors/248",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414172",
"author": "MattQ",
"timestamp": "2011-07-07T13:44:13",
"content": "This is a subject photographers and photo journalists have covered to death. The only thing questionable about what he did is install software on the computers without proper permission (but then again, they are public computers, so I don’t think there is anything wrong with that). While a security guard can’t really give permission to take photos on private property like he did, I don’t think what he did was wrong. People saying he’s a jerk and should be sued, what exactly is wrong about what he did? In the apple store, there probably are a dozen security cams recording everyone, so is the problem the fact that he uploaded it to the internet where strangers can see it? Well, strangers are watching you all the time when you’re out in public.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414173",
"author": "Mike",
"timestamp": "2011-07-07T13:46:51",
"content": "@mavis311 and fartfaceThey’re not in public. They’re in a private establishment.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414174",
"author": "Bob",
"timestamp": "2011-07-07T13:48:23",
"content": "Also:http://www.photosecrets.com/can-i-take-this-photo.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414176",
"author": "Fili",
"timestamp": "2011-07-07T13:54:02",
"content": "@fartface In Romania you are not allowed to photograph individual people on the street. Only part of a group and only if they represent a group (Like people in a shopping mall or kids in park)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414177",
"author": "Will",
"timestamp": "2011-07-07T13:57:09",
"content": "There is a world of difference between what is illegal and what is wrong. I am reasonably certain that what he did was not illegal. As others have said, there is no (longer) a legal expectation of privacy pretty much anywhere. That said, what this guy did was WRONG and just because you can’t sue him or arrest him for it doesn’t mean it’s OK. Technical hack:B+, Ethical fore-thought:F-And no, I do NOT support cctv and other “security” cameras in every nook and cranny.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414178",
"author": "Mike",
"timestamp": "2011-07-07T13:57:30",
"content": "A store is not a public place. It’s a private business, tards.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414182",
"author": "Jakob",
"timestamp": "2011-07-07T14:05:13",
"content": "I don’t think it’s a private place the way you think it is. Especially not if you don’t own it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414183",
"author": "Mike",
"timestamp": "2011-07-07T14:06:19",
"content": "Wow, such uncivility. Is that really necessary?The fact is, he asked for permission from the Apple store, and was encouraged to do so by employees. I’m pretty sure that since he packaged the entire thing as art, it’s covered under protected free speech.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414187",
"author": "KanchoBlindside",
"timestamp": "2011-07-07T14:08:45",
"content": "@Mike; it depends. Anything on government-owned land is public, save for private rentals (such as renting a County Zoo, or McGovern Park Hall in Milwaukee, for instance). “In public” doesnt mean its NOT on private property or a business. If it has public access, it’s public. The businees owner can say “No cameras” but they can usually do no more than that.Think first, LERN2TARD before you start calling people tards. You aren’t an attorney specializing in this area. There IS one sitting next to me at the moment.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414190",
"author": "Mike",
"timestamp": "2011-07-07T14:15:21",
"content": "@KanchoBlindsideSorry, man, you’re wrong. That is the definition of public and private. The public only have access to the store because Apple wants them to come in. Apple owns it; it’s private. Period.To extend your own example, not only can they say “no cameras”, but they can ask you to leave if you don’t comply, and they can charge you with trespassing if you do not leave.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414201",
"author": "steve",
"timestamp": "2011-07-07T14:32:59",
"content": "Difficult. First I was a bit freaked out- but otherwise, a Mac store is as public as it gets. I don’t have the impression, that the subjects are being exposed in a bad way, so therefore I wouldn’t really mind. I mean- anbody in the store can see you. So why not other people to? There are lots of webcams everywhere etc. Don’t be so stuck on 1950’s attitudes.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414202",
"author": "CP",
"timestamp": "2011-07-07T14:34:36",
"content": "More than the pictures, I’m offended by the incredibly headache-inducing high-frequency bleeps in the video.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414217",
"author": "Bill",
"timestamp": "2011-07-07T14:54:59",
"content": "Is this legally any different than posting photos to peopleofwallmart or poorly dressed?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414222",
"author": "JS",
"timestamp": "2011-07-07T14:57:31",
"content": "Well,@KanchoBlindside – I don’t think that any government owned land is public. You can test it by yourself by entering a military facility and start taking pictures. :D@fartface – taking photos from a public place trough a window is an offence at least in England, I don’t think they are alone in that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414224",
"author": "asheets",
"timestamp": "2011-07-07T14:59:37",
"content": "@mavis311 — You’d be surprised what expectations the public has…. just saying…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414225",
"author": "John",
"timestamp": "2011-07-07T15:00:19",
"content": "There was no consent. This is rape of privacy. He needs to stop or face legal repercussions.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414233",
"author": "haltux",
"timestamp": "2011-07-07T15:18:45",
"content": "Very surprised by people saying that this is not illegal (I am not talking about the hack, just the privacy issue…). Either these people don’t know what they are talking about, or US is very VERY different from Europe regarting this kind of issues.Taking a photo of someone (in a public place or not) and publishing it on the internet is illegal without his/her consent is illegal in France and most likely in all other european countries.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414235",
"author": "Surge",
"timestamp": "2011-07-07T15:20:26",
"content": "@mike – thank you.That -is- the definition of private vs public, however, going with the photo arguments on whether or not it was legal/ethical you can also look at it this way:Apple’s store is private, the computers are their property and they allow people to come shop there. The fact that the gentleman/hacker in question -asked for permission- from the store to do this gives him full consent to take the pictures, as the photographs took place on the private property, with private property, of people who were voluntarily in that space. He also demo’d his exposition in the same store. If the photos were released to the public, online to flickr for instance, the only parties that would have any say over them would be that particular Apple store or corporate Apple offices. A C&D order could be issued if so chosen for issues of say, defamation, etc. to the store.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414239",
"author": "Joel Horne",
"timestamp": "2011-07-07T15:29:00",
"content": "Well done! Really cool idea. I really like the photo sequence at the end of the video.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414240",
"author": "abobymouse",
"timestamp": "2011-07-07T15:35:34",
"content": "Criminal offence with 5 year prison sentence in England and Wales under computer misuse laws. Surprising US doesn’t have similar.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414241",
"author": "M4CGYV3R",
"timestamp": "2011-07-07T15:37:36",
"content": "@haltux: If the shop has security cameras, which to the best of my knowledge every single Apple store has, there is zero expectation of privacy.As the law considers it, “a reasonable person” would understand they are being filmed, whether this guy is doing his project or not. They are on private property, which is not THEIR private property. They have no guarantee of privacy.This is no more criminal than sending one of those “boneheaded robber” security videos to TMZ or wherever.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414242",
"author": "M4CGYV3R",
"timestamp": "2011-07-07T15:39:26",
"content": "@abobymouse: Just because you brits are too lazy to get up and protect your freedoms and rights doesn’t mean we yanks are. Your country has the most security cameras per-sq-mile of anywhere in the world. Are you joking me about privacy?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414248",
"author": "Stevie",
"timestamp": "2011-07-07T15:53:08",
"content": "If it’s so legal, why were Google forced to blur peoples faces in street view? :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414250",
"author": "blue carbuncle",
"timestamp": "2011-07-07T15:53:41",
"content": "I’m in the “Kyle is a creepy douche” camp on this one. It would be nice if one of the proprietors of the shop would post Kyle’s IP that these all report to (unles he is behind seven proxies lol)so we can all see Kyle’s wonderful collection of beastiality pr0n and 3 different iso’s of Rapelay.Creepy troll douche.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414252",
"author": "Icarus",
"timestamp": "2011-07-07T15:57:37",
"content": "very cool indeedI like the idea of “how does a computer sees you”any Asimov reader would daydream after such sentenceI think I saw my picture in the blitz at the end",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414255",
"author": "dontpanic",
"timestamp": "2011-07-07T16:08:50",
"content": "Serious doushebaggery here! Kyle should be prosecuted for this outrageous invasion of privacy.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414260",
"author": "pookeye",
"timestamp": "2011-07-07T16:18:40",
"content": "I have a question…Suppose I take a photo of myself, and then register that photo with the office of copyrights. I word the application to cover not only that particular image, but the source material…in other words, I copyright *my face.*Could it not be argued, then, that any subsequent photo of my face that is not authorized by me is a copyright infringement? If my face is copyrighted, than any photograph is, at least, a “derivative work.”Before you discount the idea, consider that someone who reproduced the face of Progressive Auto Insurance’s “Flo” could be sued, as could someone who used Subway’s “Jarad” without permission. These may be more a matter of trademark than copyright, but it’s the same idea.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414266",
"author": "tooth",
"timestamp": "2011-07-07T16:23:32",
"content": "some info i dug uphttp://www.suite101.com/content/taking-photographs-and-the-law-a50379http://communications-media.lawyers.com/privacy-law/Photography-or-Video-Taping-Consent.html@fartfaceI would reasonably be expected to have the privacy in my home. So no you cannot take a picture of me in my home from the side walk. If i had a 8 ft tall fence and you claimed on your roof to take a picture of me. I would also reasonably be expected to have the privacy.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414270",
"author": "Philly",
"timestamp": "2011-07-07T16:30:40",
"content": "Honestly, I wouldnt care if he had my photo, I’ve nothing to hide.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,148.566207
|
||
https://hackaday.com/2011/07/06/driving-game-steering-wheel-controller-without-the-wheel/
|
Driving Game Steering Wheel Controller Without The Wheel
|
Mike Szczys
|
[
"Peripherals Hacks"
] |
[
"controller",
"Kinect",
"racing",
"video games"
] |
For some reason this project makes us think of the Light Cycles in Tron. You know, the bike forms around the rider after they grab onto the wand that makes up its controls? Certainly you’re not going to see a car form out of thin air, but this
driving controller let you grab onto nothing to control a racing game
.
You can see that it uses a Kinect to map the body of the player and convert your movements into motion control. The demo video embedded below the fold shows the calibration step, followed by the available control options. Pushing the steering wheel forward turns on the nitrous, leaning forward or back accelerates and brakes, and a few arm signals let you navigate the game menus.
This works by mapping gestures to keystrokes. [Rajarshi Roy] tells us that there’s a very raw
code package available in their repository
but the plan is to clean it up this weekend. They will also work on a Wiki, documentation, and a tutorial on teaching the software new gestures.
We just don’t know what we like better, seeing the kinect extended as a gaming controller like this one, or using it in robotics like
that quadcopter
.
[youtube=http://www.youtube.com/watch?v=Bq7mdl0yAy0&w=470]
| 18
| 18
|
[
{
"comment_id": "413876",
"author": "cyrozap",
"timestamp": "2011-07-06T22:52:11",
"content": "This made me think of this:http://www.youtube.com/watch?v=AacoxHFYvZw",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413883",
"author": "Hirudinea",
"timestamp": "2011-07-06T23:23:18",
"content": "Big deal, I drive my car like this all the time! :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413888",
"author": "rasz",
"timestamp": "2011-07-06T23:36:41",
"content": "one word – LAG",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413889",
"author": "dudeguy",
"timestamp": "2011-07-06T23:37:28",
"content": "I love the way they keep making things for this kinect, but this has to function worse than a Wii remote and that can’t be good.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413890",
"author": "andar_b",
"timestamp": "2011-07-06T23:38:51",
"content": "Not interested…any more than using the WII steering wheel. A real wheel gives you a place to rest your hands, holding one’s arms up without support will surely end up with fatigue after a relatively short time. My hands literally fall asleep if I play my phone for more than 10-15 minutes at a time (certain games only)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413896",
"author": "dontpanic",
"timestamp": "2011-07-07T00:03:41",
"content": "Yay! Another kinect non-hack that has no useful or neat application. It also solves an already solved problem, and in a worse way! Woo hoo!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413901",
"author": "ZeroCool42",
"timestamp": "2011-07-07T00:47:29",
"content": "The only thing I have to say about this is that I’m amazed it wasn’t the first thing developed for kinect. I mean, I just assumed it already existed. It’s just kinda where my mind immediately went when I heard about kinect. But there we are.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413938",
"author": "1000100 1000001 1010110 1000101",
"timestamp": "2011-07-07T02:19:12",
"content": "Hmm…Kinect and air guitar?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414020",
"author": "j",
"timestamp": "2011-07-07T07:13:22",
"content": "i don’t know if they exist in other countrys, but in my last kinder surprise (yes i sometimes buy them, of course only for the chocolate) there was a little toy car and a link to magic-kinder.com where one could play a simple browser game using exactly the same controlling mechanism, only it used the standart vga webcam built into any modern laptop instead of a kinect.i am still waiting for a cool application of kinect that wasn’t possible to implement using a normal vga camera..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414051",
"author": "Joe",
"timestamp": "2011-07-07T08:32:40",
"content": "This reminds me of that time Microsoft made Project Natal and demo’d Burnout via hands held in the air like a steering wheel.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414054",
"author": "steve",
"timestamp": "2011-07-07T09:01:48",
"content": "Wtf? The steering wheel is primarily a handrest. Who wants to sit there like a chimp for an hour, holding their hands up??",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414062",
"author": "alt",
"timestamp": "2011-07-07T09:25:32",
"content": "pretty cool though.. rather have Kinect support for pc games for free than pay extra to companies in the future :P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414063",
"author": "KillerBug",
"timestamp": "2011-07-07T09:30:44",
"content": "This was already done…before launch…by Microsoft…using the Kinect.It was one of the first demos they had; the Microsoft version even had you trying to use a shifter that wasn’t there in addition to a wheel that wasn’t there. One of the dumbest ideas in the history of video games…and that includes the Nintendo Virtual Boy.Still, no reason to bash the guy…he probably just did this to prove that he could do it, and to learn a little bit in the process. If you want to bash someone for making terrible motion controls, you have a wide selection of companies that not only make such controls, but who then charge people money to use them.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414207",
"author": "Mark",
"timestamp": "2011-07-07T14:43:00",
"content": "@steve – me!!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414389",
"author": "Rajarshi",
"timestamp": "2011-07-07T21:22:44",
"content": "Let me just say that the point of this was not to show off something that already exists in Xbox based racing games that support the Kinect. The point of this was to have a framework for other beginners like me to experiment with gestures and add Kinect support to existing PC based games. It is so sad that a proof of concept demo and a good gesture to the community earns so much hatred..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414515",
"author": "Joe",
"timestamp": "2011-07-08T03:49:50",
"content": "I was expressing no hatred for this, just pointing out to a previous commenter that it had someone had done it before.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414538",
"author": "Rajarshi",
"timestamp": "2011-07-08T05:22:12",
"content": "Wasn’t referring to your comment Joe :) The set of gestures for the nfs portion of the demo is anyway inspired by the Kinect based racing games! It was to show that the same functionality can be ported to the PC. My goal was to show the flexibility of the system for different types of games.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414747",
"author": "Joe",
"timestamp": "2011-07-08T16:41:37",
"content": "*phew* :)Now if MS could get back to the stuff they showed and stuff others are doing with Kinect. That stupid thing is just taking up space.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,149.088879
|
||
https://hackaday.com/2011/07/06/playing-chess-on-a-microcontroller/
|
Playing Chess On A Microcontroller
|
Brian Benchoff
|
[
"Microcontrollers",
"Video Hacks"
] |
[
"chess",
"conways game of life",
"dma",
"pic",
"vga"
] |
[Arthur Benemann] started a little project for his electrical engineering program, and suffered the worst case of feature creep we’ve ever seen. He just posted an instructable of his
picChess
project that is able to play chess on a VGA monitor with a keyboard, with sound, a clock, temperature sensor. Apparently, [Arthur] was bored one evening and threw in an implementation of Conway’s game of life.
[Arthur] chose a DSPIC33F μC for his project with everything laid out on a bread board. He’s quite proud of his VGA routine, the first time he’s ever used DMA. We’re really impressed by [Arthur]’s chess engine – his is the first homebrew chess engine we’ve seen on Hack A Day. Although the engine is a brute-force search with
Alpha-beta pruning
, the engine itself seems fairly advanced that will even supports
castling
.
Although
a
few
rules
aren’t supported and the ELO rating of the engine isn’t known, [Arthur]’s engine should still be able to beat an amateur player. A fairly impressive feat indeed.
Check out [Arthur]’s video after the break.
[youtube=http://www.youtube.com/watch?v=G27dC_rapko&w=470]
| 19
| 19
|
[
{
"comment_id": "413905",
"author": "Hackerspacer",
"timestamp": "2011-07-07T01:00:01",
"content": "“temperature sensor”?Uhh? What possible purpose does that serve?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413914",
"author": "evs",
"timestamp": "2011-07-07T01:24:47",
"content": "temp sensor is either for oscillator temp compensation, or he just felt like adding it/had to for his class.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413917",
"author": "Arthur Benemann",
"timestamp": "2011-07-07T01:26:48",
"content": "I was just trying to use most peripherals, there is a screen where a analog clock showing the current time and date, I thought an environment temperature reading would be nice and would make me use the ADC of the pic ( the temp. sensor is a LM35).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413919",
"author": "Koplimi",
"timestamp": "2011-07-07T01:27:19",
"content": "@HackerspacerTo study if “The heat of the moment” actually occurs in a chess game.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413924",
"author": "don",
"timestamp": "2011-07-07T01:36:32",
"content": "Good one!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413937",
"author": "Hackerspacer",
"timestamp": "2011-07-07T02:16:27",
"content": "*facepalm*",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413939",
"author": "1000100 1000001 1010110 1000101",
"timestamp": "2011-07-07T02:23:57",
"content": "Pretty damn impressive",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413948",
"author": "Chris",
"timestamp": "2011-07-07T03:05:35",
"content": "Amazing!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413988",
"author": "Pilotgeek",
"timestamp": "2011-07-07T05:50:48",
"content": "I dig the Duke sound clip. This whole project is full of win.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413990",
"author": "bothersaidpooh",
"timestamp": "2011-07-07T05:56:41",
"content": "Now all he needs to do is make it run on one of those old LCD screens from a broken laptop which there seem to be a lot of in the WEEE bins here.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414016",
"author": "Farkanoid",
"timestamp": "2011-07-07T06:58:33",
"content": "Holy cow, a hack featuring a dsPIC! I wish more of these are posted, they’re a great family of chips, pretty cheap too considering the featureset",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414153",
"author": "Mayor Defacto",
"timestamp": "2011-07-07T13:14:45",
"content": "ftw",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414265",
"author": "Arthur Benemann",
"timestamp": "2011-07-07T16:22:07",
"content": "When selecting the deep of search the sound are the same as Duke Nukem 3D.If I had a screen at hand I would do it, a graphic LCD would be nice.The dsPIc family its nice, but no DSP functions are used in this project. The new microchip family PIC24E, would better suited to this project.It’s DMA can access 4k of RAM, and the run up to 60 MIPs",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414299",
"author": "FredP",
"timestamp": "2011-07-07T17:32:04",
"content": "From the text:————————Although the engine is a brute-force search with Alpha-beta pruning, the engine itself seems fairly advanced that will even supports castling.————————First, there’s the completely screwed up “that will even supports castling.” No one noticed this epic bit of word farting? Second, there’s the question of the quality of the engine. Is the engine just some brute force thing, or is it an advanced engine? It can’t be both. It *can* be a brute force engine with an advanced feature or two, but you can’t describe the engine itself as both brute force and advanced.Also, this is also from the text:————————… able to play chess on a VGA monitor with a keyboard, with sound, a clock, temperature sensor.————————Seriously, that sentence is totally screwed up. There’s the obvious lack of “and a” before the word temperature, but in general it reads like something a 4th grader wrote. How about something grammatically and syntactically correct such as:————————… able to play chess on a VGA monitor while also supporting peripherals like a keyboard, sound, clock, and a temperature sensor.————————Come on guys, you constantly get knocked for poor writing and you *still* can’t be bothered proofreading your stuff? Isn’t there an editor at Hackaday? That’s one of the things an editor is supposed to do – proofread. Why not set a policy that no article get published until at least two other people have read and signed off on it?You’re not really generating that much content (in terms of raw word count) per day, so there’s really no excuse for the constant errors in spelling, grammar, and syntax.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414472",
"author": "Huachinango",
"timestamp": "2011-07-08T01:11:27",
"content": "Damn boy you are good",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414487",
"author": "shelley",
"timestamp": "2011-07-08T02:21:13",
"content": "“He just posted an instructable of his picChess project that is able to play” a game very similar to chess “on a VGA monitor with a keyboard, with sound, a clock, temperature sensor.”FTFYhttp://www.fide.com/component/handbook/?id=124&view=articleactually (forgiving three-fold repetition and the fifty-move rule which are arbitrary drawing rules as opposed to the piece movement rules) if it doesn’t support en passant capturing then it’s not even playing chess, it’s playing a game similar to chess that actually eases the burden on a defender.from the wikipedia article on en passant linked in the above article:“This rule was added in the 15th century when the rule giving pawns the option of initially moving two squares was introduced. It prevents a pawn from using the two-square move to pass another pawn without the risk of being captured (Hooper & Whyld 1992:124).”ftfy :P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414746",
"author": "cgimark",
"timestamp": "2011-07-08T16:39:59",
"content": "For the chess routines the easiest thing to do is use gnuchess. It runs well even on the older 8051 chips.http://ftp.gnu.org/pub/gnu/chess/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414824",
"author": "jwrm22",
"timestamp": "2011-07-08T18:29:42",
"content": "There are some nice chess engine source code available on the web, written in C. Here is one used in a 8bit AVR:http://www.elektor.com/magazines/2009/november/avr-max-chess-computer.1115323.lynkxATM I’m working on converting it to a PIC18F with some of my own features. (special chess games wouldn’t have to be a problem.)Nice project!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415392",
"author": "Arthur Benemann",
"timestamp": "2011-07-10T00:37:22",
"content": "Most people don’t even know what is ‘en passant’.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,148.868153
|
||
https://hackaday.com/2011/07/06/moisture-control-for-a-diy-greenhouse/
|
Moisture Control For A DIY Greenhouse
|
Mike Nathan
|
[
"Arduino Hacks",
"Misc Hacks"
] |
[
"arduino",
"gardening",
"greenhouse"
] |
[Clover] loves plant biology, and tends a small garden while she is at home during breaks from college. She says that her family is notoriously unreliable when it comes to caring for plants,
so she decided to construct a greenhouse
to ensure that her garden will still be around the next time she comes home.
With her raised bed garden built and her seeds planted, she started work on the greenhouse itself, which was constructed using PVC pipe and clear plastic sheeting. Satisfied with how the structure came out, she focused on the greenhouse’s watering system and moisture sensors. The watering system uses solenoids that are connected to a pair of Arduino regulated relays. The Arduino uses moisture sensors constructed from nails, triggering the water flow when things get too dry.
The controller along with its LCD status panel was mounted inside a bird house to protect it from the elements while keeping in line with the house’s decor. [Clover] seems pretty happy with the build, but we suspect she will be adding some temperature and regulation at some point, to facilitate longer growing cycles.
Check out the video below for a quick tour of her setup.
[youtube=http://www.youtube.com/watch?v=hdojUHjg35g&w=470]
| 32
| 32
|
[
{
"comment_id": "413819",
"author": "Alex",
"timestamp": "2011-07-06T20:14:38",
"content": "“half a person, or lots of plants” hahaLooks nicely done. Might have some issues with corrosion and dust, but it’s simple enough to replace if that becomes necessary.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413830",
"author": "Joram",
"timestamp": "2011-07-06T21:05:46",
"content": "This guy has done the same, but imporved on the moisture sensor. Worth the read:http://www.tuxgraphics.org/electronics/200908/eth-flower-watering.shtml",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413832",
"author": "Will",
"timestamp": "2011-07-06T21:13:34",
"content": "Awesome idea, and great job on the implementation. And she’s HOT. My kind of girl :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413834",
"author": "anonymouse",
"timestamp": "2011-07-06T21:20:12",
"content": "I was wondering how many posts it would take for the sexism to appear. The geek/tech community has such a problem with this.Thanks for the cool project Clover, I’ll definitely keep your design in mind when I’m working on my “have houseplants that don’t just die” system.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413858",
"author": "D_",
"timestamp": "2011-07-06T21:27:34",
"content": "Well it looks like they use a perfduino, not an Arduino. While the plantduino is OK, other than the young woman it was the perfduino that caught my eye. That is if there’s a dollar or two be saved, although I hadn’t looked into that yet.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413862",
"author": "James",
"timestamp": "2011-07-06T21:37:27",
"content": "Hey anonymouse, she IS hot. That’s not sexism.(now if a commenter said “tits or GTFO”, that would be something to take issue with…)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413863",
"author": "patman2700",
"timestamp": "2011-07-06T21:38:10",
"content": "@ WillAgreed on all counts.Simple yet sweet. I probably would’ve used MOSFETS instead of relays, though. They’d keep the overall size/weight/complexity down, methinks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413864",
"author": "patman2700",
"timestamp": "2011-07-06T21:41:24",
"content": "@ anonymouseI’m with James on this one. It’s not every day that a beautiful girl is highlighted for her accomplishments in DIY electronics. If anything, it’s positive reinforcement to get more women interested in the field of hobby electronics.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413877",
"author": "Bryan",
"timestamp": "2011-07-06T22:55:17",
"content": "As neat as this project is, the wiring job on that relay box is dangerous. That relay doesn’t look like it’s rated for 15A VAC (especially with those tiny leads), which it would need to be in this application given its placement before the outlet. Furthermore, the metal housing isn’t grounded, which is extra bad since they look to have confused the polarity of the mains side of the wiring. This would mean that the outlet is always hot, but current won’t flow until the relay closes and connects the neutral wiring. Those cold solder joints and burned insulation don’t inspire confidence, either. I certainly applaud the low voltage work, and it’s a fantastically executed project otherwise, but the mains wiring isn’t an example that should be followed.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413881",
"author": "John",
"timestamp": "2011-07-06T23:17:18",
"content": "Great job…I like the simple method to detect moisture and will for sure check the Web site for more details on that.You might want to consider a backflow preventer and GFCI protected outlet if you don’t already have those in place.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413913",
"author": "zing",
"timestamp": "2011-07-07T01:24:26",
"content": "@patman2700:Except you seem to be implying that we shouldn’t be encouraging the less attractive women to be in electronics. Or just assuming that since they don’t have looks, they’d try hard anyway?How about we just encourage women without mentioning their looks, much like we do with guys?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413918",
"author": "revoltlab",
"timestamp": "2011-07-07T01:27:12",
"content": "Women are people.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413926",
"author": "Dave Eaton",
"timestamp": "2011-07-07T01:41:25",
"content": "Because the geek world is awkward enough to mention an attractive woman’s looks, and independent enough to resist the PC police’s attempts to shame them in to stopping.Some people are both attractive and technically adroit. Which I prefer to notice depends on my mood and context.It is never going to be OK to notice beauty and competence at the same time, I guess, and since both are relatively rare, seeing both in a single person and expressing delight is pretty damned natural, despite the grievance mongering. I never agreed to turn my senses off to become a scientist, but I’ve sure learned to keep my mouth closed in professional settings.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413928",
"author": "mjrippe",
"timestamp": "2011-07-07T01:45:22",
"content": "@zing – Or we could start mentioning guy’s looks in our comments. “Great hack lardass”, or “Not bad for a hipster wannabe”. But that doesn’t level the playing field does it?The truth is, men are pigs (myself included). But some of us rise above the muck far enough to not vocalize our opinions of every female we see online. Ever read the comments on a porn site? Hilarious – no wonder some of those guys get their only gratification there.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413929",
"author": "Dave Eaton",
"timestamp": "2011-07-07T01:55:42",
"content": "I checked out the source article. My thoughts were “Wow- cute.” Then “Clover. Nice name.” Then I read the article, and did not think another second about Clover or her cuteness. I saw an article by someone clearly motivated by science and engineering, a combo I also like. One doesn’t have to be a pig. Nor does one have to be a eunuch.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413935",
"author": "D_",
"timestamp": "2011-07-07T02:05:19",
"content": "Merely noting that a person of person is attractive isn’t sexist. Using that one lone physical attribute to judge another in unrelated matters would be sexist. I just can’t recall comments here ever doing that. Stating that women are people too would be stating the obvious. Women themselves note if someone is attractive.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413936",
"author": "Randomlaughter",
"timestamp": "2011-07-07T02:14:43",
"content": "Just a hint for anyone constructing a greenhouse using pvc pipe and plastic; You should always paint the pvc pipe first, otherwise the off-gassing from the pipe will cause the greenhouse plastic to disintegrate way quicker than it would purely from UV damage.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413946",
"author": "M_",
"timestamp": "2011-07-07T02:54:42",
"content": "I knew an attractive woman, one of the nicest people I’ve met, who had quit EE (and, fortunately, entered another technical field) because she couldn’t deal with the constant attention. It’s not “PC” to be aware of this and try to make it a little easier for women in tech. Just stay on topic like the headliners here do so well.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413954",
"author": "patman2700",
"timestamp": "2011-07-07T03:25:01",
"content": "What, it’s now self-depreciating for me topolitelysay she’s good-looking? I would think that to be a compliment.I love the project, it seems to fit the bill quite nicely. Am I still one of those “pigs” to whom the majority seem to be referring?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413967",
"author": "madwelder",
"timestamp": "2011-07-07T04:23:47",
"content": "Neato.When I saw the title “moisture control” I thought of controlling dampness in the air and immediately imagined a vent/window that was opened by a super-strength Rittenhouse hygrometer.Ah, the objectification of women and the dehumanizing of men by likening them to animals that always seems to follow…Not everything that is thought should be said(typed).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413974",
"author": "Rick",
"timestamp": "2011-07-07T04:53:27",
"content": "> What, it’s now self-depreciating for me to politely say she’s good-looking? I would think that to be a compliment.If you were a white guy in Detroit or a limited to a wheelchair, what do you think will always come up as a topic of conversation? Don’t you think you’d get sick of it? Wouldn’t you rather people ask you how the Lions are doing or if you’d like to go see a band this weekend instead of gaping at you like some sort of freak shows?We’re here to bond over hacks and bitch about them calling things Arduinos when they ain’t. We should be complaining about her putting hot glue on high-current connections. Bad! And those look like shitty terminal blocks. Trust me, spend the extra $0.75 for the better ones! Especially in a one-off, they just ain’t worth it. And Randomlaughter got good advice as well — PVC has shit like lead and cadmium in it as well.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414039",
"author": "ino",
"timestamp": "2011-07-07T08:01:30",
"content": "I wonder how long it will take for the nails to generate false readings due to rust.And I guess I’m the only one thinking that the girl is just eye candy in the video and never took part on the project?You would let a dude present your own project and just strike a pose, smiling at the camera anytime you can ? Bogus.It’s a geeks’ trap to attract attention. Nothing more.Anyway, nice project :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414061",
"author": "some guy geek",
"timestamp": "2011-07-07T09:19:26",
"content": "@ino: I don’t know, From the looks of all of it, I have a strong intuitive feeling the presenter is the maker. At the very least, main idea is hers even if there are some invisible helpers behind the sceens.As far as praising cute women geeks, being a guy myself, I have a feeling it is predominately just a “ha, in your face, jocks!” sweet-revenge-for-all-the-mocking moment. We are proud that geekdom also includes individuals whose appeal transcends its domain and who, although attractive, would probably not be bored by what we like to talk about and who probably has similar definition of what is cool and what isn’t.We women YOU would certainly like would probably hang with us – it means we ARE normal people (actually, we are better, because we make cool stuff)!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414168",
"author": "samIam",
"timestamp": "2011-07-07T13:37:56",
"content": "@RickFYI, something is an “Arduino” once it uses the Arduino boot loader. It doesn’t matter if the thing is deadbugged, on breadboard, or a full fledged ‘duino from a store.@the “she’s hot” moronsStatistically, there must be gay hackaday readers. You don’t see them talking about how hot a male hacker is or complimenting male hacker looks. So why is it relevant when there is a woman involved?Trust me I do my fair share of neck craning, but when I come here looking for stuff to read it doesn’t matter if a guy or a girl made it. It only matters if its good. You don’t walk around all day vocalizing every attractive person you see on the street, do you? Then don’t do it here under the cloak of anonymity. No one gives a damn if you think she’s hot, so keep your internal dialogue that – internal.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414204",
"author": "Gottabethatguy",
"timestamp": "2011-07-07T14:35:08",
"content": "@Rick, I’m an above average good looking man and I never get tired of hearing about it. I love to be complimented. Now if I got some fat troll following me around pawing at me THAT is annoying, but to simply say to someone, wow you are very attractive, or OMG you have a nice smile, or I love your eyes. That stuff never ever gets old, I think the only people who complain about good looking people being complimented are those that don’t recieve those compliments.Fact of the matter is that your physical appearance is as much of an asset in today’s world as any other asset you may be born with. Think Justin Beiber would be where he is without his boyish good looks? Think Jeri Elisworth would have pulled the cover of wired if she had shingles and a hump on her back?If you are good looking use it to your advantage, if not well, to bad for you, you better find some other way of standing out perhaps by being much better at what you do than the good looking person beside you.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414218",
"author": "Wezzel",
"timestamp": "2011-07-07T14:55:02",
"content": "I Like the project, but the kludged ‘arduino’ is making my eyes bleed ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414238",
"author": "zing",
"timestamp": "2011-07-07T15:28:22",
"content": "@Gottabethatguy:You’d think with the paucity of famous female engineers you could keep them distinct. Jeri’s never been on the cover of Wired, that was Ada/Limor Fried.And you’re just driving it in deeper by saying Ada was only put on the cover because she was attractive, not because she is a successful engineer running a multi-million dollar business.Attractive isn’t a complement if it really means “You did so well for someone as attractive as you are, but if you weren’t this would be mediocre.”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414258",
"author": "James",
"timestamp": "2011-07-07T16:14:14",
"content": "If anyone minds being complimented it’s because they have their own issues, not because compliments are bad. If a person can’t cope with being politely complimented on their looks (regardless of technically savvy or not) then they have issues they need to deal with, not everyone else. If they become impolite or aimed to abuse/upset then it becomes a different matter. If it’s the only attribute anyone feels worth noting when there are others on display (skills) then it’s not OK, but I don’t think it’s out of place to say someone is attractive while noting their abilities in other fields. Sexism would be to say women can’t code, or blokes can’t cook. Saying (for example) “jamie oliver makes a nice steak, and he’s a looker too” isn’t negative, or sexist, or a problem until the over-sensitive folk arrive.It’s nice work, nicely presented. It’s congratulated on here.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414285",
"author": "Gottabethatguy",
"timestamp": "2011-07-07T16:56:12",
"content": "@Zing whoops you are correct wrong female engineer. She was on the cover because she is both succesful and attractive. Simple as that. Like I said think she would have made the cover if she looked like a mongloid?Also I never said she only made the cover because she was attractive, you said that. I said she wouldn’t have been on the cover IF she wasn’t attractive. Its a fact of life sex sells. Deal with it.I’ll go back to enjoying my beautiful life now.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414339",
"author": "Bryce",
"timestamp": "2011-07-07T18:53:06",
"content": "There doesn’t seem to be anything in here except the LCD (it is unclear to me how they are using that) that would need a processor. They seem to run the water until the sensor reads that it is wet and turn it of when it is dry. A pretty simple circuit. You could even throw in a potentiometer so you could adjust what “wet” actually means. Dry -> ON, Wet -> OFF. If there was a timed element like don’t water for more then 3 hours in one day, 5 minutes at a time, then I could see the need for the processor.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414477",
"author": "Raisin",
"timestamp": "2011-07-08T01:27:24",
"content": "Sexism? Rather an optical illusion! If you concentrate enough, you can also discover a watering system on the movie.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414679",
"author": "madwelder",
"timestamp": "2011-07-08T14:19:50",
"content": "@Bryce: Amen! Outlaw unnecessary complications unless it’s an homage to Rube Goldberg.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,149.156317
|
||
https://hackaday.com/2011/07/06/propeller-based-robot-with-basic-object-avoidance/
|
Propeller-based Robot With Basic Object Avoidance
|
Mike Nathan
|
[
"Robots Hacks"
] |
[
"hack a week",
"parallax",
"ping",
"propeller",
"robot"
] |
The Parallax Propeller is a pretty powerful MCU as [Dino] recently discovered
in his latest Hack a Week installment
. He wanted to build a simple robotics platform that he could use for testing out various sensors, and he figured he might as well learn about a different type of micro controller in the process.
He pieced together his robot using a pair of old Roomba motors he had sitting around, mounting them on a standard RadioShack project box. A Propeller MSR1 control board runs the show, and a Propeller PING sensor is used to get an idea of what the robot’s surroundings look like. He is an admitted newbie when it comes to using Propeller micro controllers, but [Dino] was able to give his robot some rudimentary object avoidance abilities fairly easily. A few small bugs aside, he had the robot up and running in short order, a testament to how easy it is to work with the Propeller platform.
Stick around to see a brief video covering the robot’s construction we have embedded below.
[youtube=http://www.youtube.com/watch?v=znGYZdH3ebs#&w=470]
| 6
| 6
|
[
{
"comment_id": "413807",
"author": "crazymike",
"timestamp": "2011-07-06T19:04:46",
"content": "I remember making this exact same type of robot with a BASIC Stamp II about ten years ago, great times playing with stamps!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413823",
"author": "Ecchin",
"timestamp": "2011-07-06T20:23:10",
"content": "Wall… e?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413893",
"author": "mrguyorama",
"timestamp": "2011-07-06T23:46:06",
"content": "@ crazymike: I have that exact kit right now. Basic object avoidance is one of the experiments the project book walks you throughHe thinks he is a newbie? HA! I havent even memorized the resistor color codes",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414038",
"author": "KillerBug",
"timestamp": "2011-07-07T07:55:20",
"content": "It looks really neat…but no weapons? What is the point of a robot if you can’t use it to fight other robots?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414162",
"author": "Dino",
"timestamp": "2011-07-07T13:26:36",
"content": "Next project with involves LAZERZ!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414436",
"author": "strider_mt2k",
"timestamp": "2011-07-07T22:56:53",
"content": "Anyone else think the base had propellers in it?",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,148.908794
|
||
https://hackaday.com/2011/07/06/mb-led-is-next-generation-of-led-video-block-puzzles/
|
MB LED Is Next Generation Of LED Video Block Puzzles
|
Mike Szczys
|
[
"LED Hacks",
"Microcontrollers"
] |
[
"GLiP",
"puzzle",
"stm32",
"video"
] |
Meet MBLed
, a set of interactive 8×8 LED tiles. Put them next to each other and they will orient themselves into a video screen which is the sum of the parts. If this sounds familiar it’s because we’ve seen the concept before in
the GLiP project
. [Guillaume] tells us that MB Led is the new version of GLiP and from what we’ve seen they’ve made a lot of progress.
The hardware is well designed. A PCB hosts the STM32 microcontroller and a pair of pin headers which receive the RGB LED matrix module. A pair of AA battery holders make up the legs for the device. Each has infrared receiver/emitter pairs on each of the four edges and constantly polls for its neighbors.
What really impresses us is the algorithms they’re using for communications. FreeRTOS runs on the ARM processors, and a series of messages was developed which allow the blocks to elect a leader, and follow its commands via the distributed system. Check out more about those algorithms on the page linked above, and join us after the break to see the demo video.
[youtube=http://www.youtube.com/watch?v=dxhkEBGJZMA&w=470]
| 15
| 15
|
[
{
"comment_id": "413761",
"author": "Will",
"timestamp": "2011-07-06T17:17:54",
"content": "PURE. WIN.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413774",
"author": "Kevin",
"timestamp": "2011-07-06T17:47:39",
"content": "The way you say “Elect a leader” is only a little scary ;-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413775",
"author": "Madhur",
"timestamp": "2011-07-06T17:48:22",
"content": "^:)^",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413787",
"author": "Mike",
"timestamp": "2011-07-06T18:15:20",
"content": "I am pretty sure these things will learn to take over the world.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413791",
"author": "eni_",
"timestamp": "2011-07-06T18:21:16",
"content": "Pure genius, I’d love to see a larger matrix of… Matrices in the future.Absolutely fantastic!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413800",
"author": "Lewis",
"timestamp": "2011-07-06T18:37:39",
"content": "Any chance of getting copies of the boards for us mere mortals to play with ?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413820",
"author": "Nardella",
"timestamp": "2011-07-06T20:16:18",
"content": "This is very impressive, so may possibilities especially with such a versatile and robust implementation!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413874",
"author": "nikescar",
"timestamp": "2011-07-06T22:40:54",
"content": "These guys are geniuses. It’s a very simple physical design implemented perfectly in software. I wanna play.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413882",
"author": "cirictech",
"timestamp": "2011-07-06T23:22:40",
"content": "The hardware cost on the things Is Very high, but they are super cool. I would say a job well Done!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413958",
"author": "J. Peterson",
"timestamp": "2011-07-07T03:49:39",
"content": "Shortly after GLiP was published last year, I happened to be in Paris on vacation and got to meet the students who created it. Very sharp, creative crew of students. The professors were also great, very involved in their students work (unlike in the US).I’d be curious to know if the MB LED guys are using the same (or similar) hardware. The GLiP tiles used IR to communicate. One of the biggest challenges they had was finding a way of “sealing” the IR interface between tiles, so the IR signals didn’t “leak” to the next tile over and confuse it. They finally resorted to little foam seals around the IR transceivers to block the IR light from escaping.Of course, some of us punted and and resorted to a global communication bus:http://www.puzzlemation.com@cirictech is right, the tiles are very expensive – figure at least $50/each for a configuration like these – probably much more if parts are purchased in < 100 quantity.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414026",
"author": "mowcius",
"timestamp": "2011-07-07T07:29:14",
"content": "Oh how I want some of these!Very impressive!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414053",
"author": "Fabien",
"timestamp": "2011-07-07T08:51:51",
"content": "@J.Peterson : they actually use the same hardware (or slightly modified) since in French schools we have ideas but not much money and these little things are expensive when not produced in large numbers. (I would say that the 16 cost 1000$).I have done this course a year ago and this is the most incredible course I have ever done. You can check out the other projects there :http://www.rfc1149.net/rose2011/(last posts are in english)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414056",
"author": "Mad Max",
"timestamp": "2011-07-07T09:12:06",
"content": "Nice demo, and I’m sure there asr some interesting algorithms involved in that adaptive behavior, but this seems to imply that the application running and all data it uses is self-contained and duplicated in every single tile. This sound rather extremely redundant to me.Wouldn’t any real-world application involve some sort of external data source for stuff to display? Wouldn’t that automatically designate the leader by definition (Hey, I gots me some data, now start displaying what I tell you)…?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414181",
"author": "Bill",
"timestamp": "2011-07-07T14:05:13",
"content": "@MadMaxDisadvantage to the way you suggest would be that the master tile would be pumping out 24 bit color pixel data for every pixel on every other tile through the IrDA ports. Having all tiles already have all graphic data would mean the only communications you would need is sync and control commands.I’m just theorizing, but I’m guessing it was easier to be redundant in memory with less communications overhead.This project is pretty sweet, and I’ve been looking for something to build while learning FreeRTOS and 32 bit Cortex cores. I think I’ll be replicating this from scratch.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "418321",
"author": "Alex",
"timestamp": "2011-07-16T10:58:34",
"content": "Very nice !!!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,148.964654
|
||
https://hackaday.com/2011/07/06/your-snapshot-on-a-thermal-printed-receipt-instantly/
|
Your Snapshot On A Thermal Printed Receipt, Instantly!
|
Mike Szczys
|
[
"digital cameras hacks",
"Microcontrollers"
] |
[
"atmega8",
"thermal printer"
] |
What could be better than a low-res black and white photograph printed instantly on paper that will yellow and crumple over time? Wow, we really need to work on our sales pitch. But all kidding aside, we love the idea that [Niklas Roy] came up with in order to build
this thermal printing camera
.
His
Picasa album
has two snapshots of the hardware. He’s using an LM1881 for video sync separation just like he did with
his PING project
. From there an ATmega8 microcontroller grabs each column from the image and prints it using the thermal printer. It looks like everything runs on a 9V battery which is nice for portability (although we still never got our hands on that rechargeable 9V we’ve been meaning to pick up). Perhaps just as impressive is that [Niklas] got this up and running with about 400 lines of code. Nice!
Of course you’ll want to see this in action so we’ve placed a video clip after the break. Just like old-timey cameras it looks like you’re going to need to sit still until the image is done printing.
[youtube=http://www.youtube.com/watch?v=wt5dBrXg8eY&w=470]
| 13
| 13
|
[
{
"comment_id": "413752",
"author": "willow",
"timestamp": "2011-07-06T16:47:55",
"content": "This is very awesome.. love the idea and re-use of material",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413755",
"author": "Aleks Clark",
"timestamp": "2011-07-06T17:12:46",
"content": "it looks like an AT-AT. MAKE IT WALK",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413756",
"author": "Tweeks",
"timestamp": "2011-07-06T17:13:12",
"content": "Wow.. Talk about time lapse.. :)Tweeks",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413771",
"author": "pdrift",
"timestamp": "2011-07-06T17:39:23",
"content": "ok now someone figure out how to do this using that msp430 dev board that was on sale for half price and a gameboy printer…oh yeah put up your step by step instructions and code also…seriously though these types of projects are too awesome! I hope to be able to make cool shit like this someday..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413782",
"author": "sp00nix",
"timestamp": "2011-07-06T18:02:37",
"content": "Smile! You’re on gameboy camera!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413789",
"author": "kalleguld",
"timestamp": "2011-07-06T18:20:50",
"content": "Nice and lo-tech. Reminds me of a poloaid camea. It could use a stick of memory, though, so you wouldn’t have to sit still while it’s printing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413797",
"author": "zigzagjoe",
"timestamp": "2011-07-06T18:32:24",
"content": "Neat camera.Though, it’s highly unlikely that the thermal printer is powered by a 9v – they require a lot of current to work. 9v are best for high voltage and little current use.The black box under the roll of paper is likely some sort of lead acid or lion battery pack to power it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413802",
"author": "bothersaidpooh",
"timestamp": "2011-07-06T18:47:34",
"content": "Nice, I was thinking along these lines for making a “poor man’s label printer” to replace the £70 Dymo I broke the other day.Hint:- motors don’t like running into virtual brick walls, all you hear is ScrGRRREEESCRSCRRRUNCH as the gearbox converts itself into plastic shrapnel.One broken Epson Pre-Cambrian parallel label printer head, and some code (thanks to this guy as it makes things a lot easier) and a USB host device and it ought to work.using a camera is pretty ingenious, has the OP considered underclocking it a bit to increase the signal in low light conditions?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413809",
"author": "Niklas",
"timestamp": "2011-07-06T19:09:13",
"content": "@zigzagjoe“The black box under the roll of paper is likely some sort of lead acid or lion battery pack to power it.”Yes, 6V lead-acid. 9V was nice small, but finished after printing five images. With this battery it works really long now.@bothersaidpooh“using a camera is pretty ingenious, has the OP considered underclocking it a bit to increase the signal in low light conditions?”Brilliant idea. Haven’t thought of it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413903",
"author": "Jax184",
"timestamp": "2011-07-07T00:51:26",
"content": "The computer recycling company I work at (Free Geek Vancouver) was once given a commercial camera that worked just like this. It was from the 1980s and was intended to be used to capture stuff written on whiteboards. I have no idea what it was actually being used from, but it had an A&W asset tag on it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413942",
"author": "1000100 1000001 1010110 1000101",
"timestamp": "2011-07-07T02:42:07",
"content": "Very nice",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413944",
"author": "vonskippy",
"timestamp": "2011-07-07T02:48:02",
"content": "Your portrait printed while you wait…and wait…and wait…and wait…still waiting…and wait…and wait…and wait so more…and wait longer…more waiting…did I mention you need to wait…and wait…and wait…and….Voila!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414017",
"author": "Mike",
"timestamp": "2011-07-07T07:03:27",
"content": "Awesome project idea, but 3 mins wait is definitely too long. Think I’ll attempt this one too, got an old label printer at work I can use.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,148.810403
|
||
https://hackaday.com/2011/07/06/retro-radio-building-on-another-wifi-radio-hack/
|
Retro-radio: Building On Another WiFi Radio Hack
|
Mike Szczys
|
[
"Arduino Hacks",
"Radio Hacks"
] |
[
"radio",
"router",
"wifi",
"wireless"
] |
[Jay Collett] likes listening to Internet radio stations and decided to build
his own standalone hardware that lets him listen
without being at his computer. But he wasn’t starting from square one on this project. [Jay] built on the epic instruction set that [Mighty Ohm] published when he first built
his own WiFi radio
.
Both of these radios used the same method of getting onto the internet; a hacked router. We kind of like this because it means you should be able to use the radio as a bridge for wired Ethernet devices. But we digress. [Jay] departs from the instructions by using an Arduino and its IDE to interface an LCD screen with a different line/column orientation than the original, and to implement a different control scheme. This makes the project a bit more approachable if you prefer not to roll your own electronics.
Take a look at the video after the break. The router takes quite a while to boot, but once it does it seems that the controls are both intuitive and responsive.
[youtube=http://www.youtube.com/watch?v=RzRpLWX_Lw4&w=470]
| 14
| 14
|
[
{
"comment_id": "413732",
"author": "lou eney",
"timestamp": "2011-07-06T15:24:22",
"content": "this is a cool build. Thanks",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413734",
"author": "Tweeks",
"timestamp": "2011-07-06T15:35:41",
"content": "I love that it takes a minute to boot. This actually more closely emulates the behavior of the older tube style radios that had to “warm up”. Pretty sweet project. Nice job Mike!Tweeks",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413745",
"author": "lordicewind",
"timestamp": "2011-07-06T16:16:47",
"content": "Nice choice for the lcd color, too! Somehow has the look and feel of a magic eye tube. Now just hook up some PWM output to the backlight to let it grow brighter while booting ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413748",
"author": "jeremiah",
"timestamp": "2011-07-06T16:43:47",
"content": "I think an older android phone plus an arduino running the android development kit could make this pretty awesome, and very inexpensive.android phones are certainly powerful enough for this, and much more, and you can control it from the arduino, allowing a custom physical button interface.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413757",
"author": "Morgauxo",
"timestamp": "2011-07-06T17:13:30",
"content": "Awesome! I love lordicewind’s idea about the backlight while booting too. You need some retro knobs to go with that case though! Maybe these?http://alturl.com/w7rddAnd don’t forget the washers!http://alturl.com/sauhu. You might find better than those elsewhere… that was just a quick check of one site that I know.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413767",
"author": "Abbott",
"timestamp": "2011-07-06T17:29:04",
"content": "@jeremiahI think the main point to the project was a retro look. No matter what kind of skin you use, nothing will ever beat being able to turn a knob to change a setting, volume, station, etc.Awesome radio.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413772",
"author": "that1guy",
"timestamp": "2011-07-06T17:44:19",
"content": "Is there any way to get FM or AM radio broadcasts via internet if the station isn’t live streaming from their site? I just feel ridiculous having to go out and buy a cheap FM radio to get local stations.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413779",
"author": "jeremiah",
"timestamp": "2011-07-06T17:52:37",
"content": "@abbott: With the hardware I described, you can do just that. Android phone with an attached arduino to handle the buttons & knobs.@that1guy: not without FM tuning hardware.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413801",
"author": "JayCollett",
"timestamp": "2011-07-06T18:46:26",
"content": "@that1guy: You could add on the FM shield from sparkfun to give you FM/AM and streaming audio from the internet, not a bad idea actually, may try this myself…http://www.sparkfun.com/products/10342",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413804",
"author": "bothersaidpooh",
"timestamp": "2011-07-06T18:52:37",
"content": "I have a very ancient valve radio at home somewhere which could be hacked in this way.Wonder if its possible to use one of those WiFi miniPCI notebook cards in some way, this would reduce the cost a bit and they have relatively large pads compared with your average IC, so anyone can build it.Have the micro detect card at startup so that it knows which card is connected and voila.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413811",
"author": "Jan",
"timestamp": "2011-07-06T19:16:06",
"content": "@ bothersaidpooh: Don’t go and kill old radios. that’s a shame. it’s most likely the only piece of electronics you own that may survive a nuclear electromagnetic pulse.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413879",
"author": "Hirudinea",
"timestamp": "2011-07-06T23:03:21",
"content": "You should replace the screen with a colour phone screen that has a “radio dial” screen saver after a few seconds to look completly authentic, besides that great!@ Jan: From the 90’s on the chinese have made cheap “Old Timey” radios that look pretty good for what they are but have just cheap chinese radio guts, if you find one cheap on Craigslist that would be prefect for a project like this.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413922",
"author": "Amos",
"timestamp": "2011-07-07T01:34:43",
"content": "Not to nit-pick a well-done project, but… did you mean to put the waves in the speaker cloth? It would drive me crazy looking at that. :PI can’t wait until e-paper is as cheap and plentiful as character LCDs (seems like it’s taking forever, doesn’t it?). They’d make lots of cool “cloaked” displays possible. Imagine a nice d’Arsonval meter or tuning dial with e-paper for the scale! It would look like an original part most of the time (including your choice of font, logo, etc.) and still be a useful display like the LCD in this project.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413994",
"author": "tantris",
"timestamp": "2011-07-07T05:59:26",
"content": "if anyone is interested in mightohm’s setup: just on tuesday, newegg had the 520gu for $25 after rebate. add a usb soundcard from dx for about $2 and piggy back your avr/arduino or pic to control lcd and buttons. (newegg does price alerts)if you want ethernet, wireless, serial, and usb the 520gu is probably the cheapest way to go.right now, you could also get the 330ge for $22 after rebate. – not for this project however, it lacks the usb port. but i love the size: a full blown router the size of an add-on board (a shield in **duino lingo)",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,149.01857
|
||
https://hackaday.com/2011/07/06/a-plotter-made-from-lego-parts/
|
A Plotter Made From Lego Parts
|
Jeremy Cook
|
[
"cnc hacks"
] |
[
"cnc",
"lego",
"plotter"
] |
We’re always amazed at what people can come up with using Lego parts, but this hack certainly pushes the limits. Originally conceived as a 3D printer,
this plotter
is still an impressive proof-of-concept. Ironically, this “3D printer” was build with the hope of winning a Makerbot 3D printer, so be sure to vote for it if you’re impressed.
it’s pretty impressive seeing what [graphmastur] has done using only Lego parts. It’s especially entertaining to see a sheet of Lego “grass” used as the Y-axis table. The build was designed in Lego Digital designer, and the parts are available in “LDD” format or HTML.
This project is explained further in the video after the break. If you’d like to simply see it do a plotting operation, fast forward to around 4:30. The device is not perfect, but as the video says “it worked, pretty well” when drawing a square with an ordinary marker.
[youtube
http://www.youtube.com/watch?v=RbVgnLbvZWM&w=470%5D
| 9
| 8
|
[
{
"comment_id": "413705",
"author": "Will",
"timestamp": "2011-07-06T13:30:06",
"content": "You guys need to figure out how to embed the video so we can see the whole thing lol.Great concept though, neat to see it work!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413728",
"author": "Tim",
"timestamp": "2011-07-06T15:15:21",
"content": "@Will – If you right click on the video and choose ‘copy url’, you can paste that into the address bar and watch the video from the source. That works for this video on Windows 7 with IE 8.I agree, thought, it would be nice if HAD could get the embedded video to display properly.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "413731",
"author": "Caleb Kraft",
"timestamp": "2011-07-06T15:22:38",
"content": "Fixed the video, sorry guys.",
"parent_id": "413728",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "413776",
"author": "Stevie",
"timestamp": "2011-07-06T17:51:43",
"content": "It’s pretty impressive. It certainly needs some fine tuning but it’s nearly there.Perhaps consider replacing the sharpie with a rollerball ink pen? Might roll across the paper a bit easier. It seems like the force of the sharpie is throwing things off a little.Good luck in the comp!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413786",
"author": "graphmastur",
"timestamp": "2011-07-06T18:13:35",
"content": "@Caleb Kraft: Thanks for fixing the video.@Stevie: Sounds like a good idea on the rollerball. I might have to try that out. And it was more of how the Y axis was created than the sharpie itself, as it happened once without the pen there.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413790",
"author": "alex",
"timestamp": "2011-07-06T18:20:49",
"content": "looks cool!i think you could improve your design by building a better lead for the table so it won’t turn and add building it more stable so that the axes on the top won’t bend anymore.keep it up!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413810",
"author": "graphmastur",
"timestamp": "2011-07-06T19:14:09",
"content": "Actually, there was a stress on some of the pieces too, so I won’t be using this triangle design. ‘m going to design it more like the cupcake cnc this time. I’m working on a substitute for the string. I’m trying to braid it into belts.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413950",
"author": "gavcore",
"timestamp": "2011-07-07T03:15:02",
"content": "what a joke dude I appreciate your efforts to pull this off with a nxt but seriously this is pretty micky mouse. if you like message me and I would be happy to help you get your hands on some parts for a cnc mill",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414083",
"author": "Apex1978",
"timestamp": "2011-07-07T10:36:13",
"content": "that thing reminds me of Fischertechnik stuff I played with in the 80s.I realy loved Fischertechnik because they also had robotic and nice electronic parts back then.If you don´t know about Fischertechnik have a look at:http://www.youtube.com/watch?v=bF7_2FS3j1M&feature=relatedhttp://www.youtube.com/watch?v=-mZ0CXcTozY&feature=fvsthttp://www.youtube.com/watch?v=uTTleCjdQHY&feature=related",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,149.279858
|
||
https://hackaday.com/2011/07/06/magic-locket/
|
Magic Locket
|
Nick Schulze
|
[
"LED Hacks"
] |
[
"jewelry",
"led",
"locket",
"pic"
] |
[Andrey] from RTFM has built himself a
glowing LED pendant
using only three parts and some simple code. The hack is not particularly complicated but [Andrey] provides some decent instructions on Pickaxe programming via an RS232 serial port and RGB LED control to produce the nice glowing effects. The pendant contains an RGB LED, a Pickaxe-08 microcontroller and a couple of button cell batteries. To cram everything inside the locket, [Andrey] had to grind down the LED and Pickaxe-08 to their minimum dimensions using a file.
All of the Basic code for the pendant is supplied on the project page and [Andrey] describes how he manages to PWM all three LED pins for the colour effects. The video after the break may be of interest to anyone who has not had a go at Picaxe programming before or for a beginner who wants to try out some new embedded devices without a big hit to the wallet.
[youtube=http://www.youtube.com/watch?v=hzSyRVETA8Y&feature=player_embedded&w=470]
| 21
| 21
|
[
{
"comment_id": "413675",
"author": "Tim P",
"timestamp": "2011-07-06T11:47:21",
"content": "Did you misspell PICAXE as PICKAXE ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413677",
"author": "smoker_dave",
"timestamp": "2011-07-06T11:51:49",
"content": "Nice idea.It would be cooler to have this running from a renewable energy source though. Maybe an energy store charged by the movement of the user, heat from the body (?) or even a small solar panel.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413688",
"author": "Mike",
"timestamp": "2011-07-06T12:29:31",
"content": "PICAXE. (I’m not yelling, it’s supposed to be capitalized, also.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413692",
"author": "Alex",
"timestamp": "2011-07-06T12:43:15",
"content": "Nice job fitting all that in there. I think I’d go for something different for the light pattern, but that’s easy enough to change.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413713",
"author": "fartface",
"timestamp": "2011-07-06T14:28:03",
"content": "should have went further and made the jewel a button to change patterns.It’s a nice start to something cool.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413723",
"author": "blue carbuncle",
"timestamp": "2011-07-06T14:54:19",
"content": "It’s official. No one makes smd capacitors anymore.Wife likes the aesthetics of it enough, but I still wince when code is involved with a blinking led. LED for Mike ;)Congrats on the build and figuring out the code, though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413726",
"author": "Whatnot",
"timestamp": "2011-07-06T15:10:57",
"content": "Not to diminish anything about it, and recognizing the advances of doing it yourself I’d like to mention that in dollar stores and toy stores they sell various ‘magic wand’ and such toys that actually have the whole effect and controller on a tiny PCB inside them, so if you are lazy you could just purchase one of those and mod it into a more fancy enclosure like this pendant.They often have 3 colors of very bright LED in the 3mm or SMD variants so it’s handy to have the whole material list in one single 1 or 2 dollar buy.Those toys are also handy to mod for adding effects to computercases or bicycles and so forth, especially since some of them rely on a persistence-of-vision effect as you wave them around.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413727",
"author": "Kayvon",
"timestamp": "2011-07-06T15:11:16",
"content": "Nice project.I worry about the battery life, however. Most RGB LEDs have a forward bias voltage of ~3.4 V for the GB channels. New button batteries will barely give you that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413736",
"author": "tom",
"timestamp": "2011-07-06T15:56:22",
"content": "i’ve done something similar with flesh tunnels and attiny45’s, they run on a coin cell for about 2 days before dying. Cant imagine this is much different",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413754",
"author": "abobymouse",
"timestamp": "2011-07-06T17:12:43",
"content": "@blue carbuncle – today they’re blinking 3 LEDs; tomorrow they’re embedding a micro controller in a project that needs it and writing their own open source code. Beginners need somewhere to start.Having said that – some of the beginners would probably like some really simple LED flasher circuits.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413758",
"author": "chango",
"timestamp": "2011-07-06T17:13:32",
"content": "@tom: you put an AVR where?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413769",
"author": "abobymouse",
"timestamp": "2011-07-06T17:32:41",
"content": "@chango – lol; in an ear piercing",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413781",
"author": "Andrey Mikhalchuk",
"timestamp": "2011-07-06T17:58:11",
"content": "tom: attiny45 has 4 PWM channels, PICAXE has just one. Because the PWM is implemented software way in this project it lasts less, still has enough juice for a few hours.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413783",
"author": "Andrey Mikhalchuk",
"timestamp": "2011-07-06T18:03:22",
"content": "Whatnot: there are also 2-pin RGB LEDs on ebay for a few buck per pound. The “slow” version of that LED produces effect similar to to what this project does. However it’s less fun because it is not programmable and not DIY :)I also wanted this project to be a 5-minute quick start guide to the simplest affordable microcontroller out there (attinies are as cheap but a bit complicated because they need programmer).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413784",
"author": "Andrey Mikhalchuk",
"timestamp": "2011-07-06T18:05:46",
"content": "fartface: unfortunately the button didn’t fit the package. I have an attiny85 version of this – it changes the patterns. That episode is coming later.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413875",
"author": "Hirudinea",
"timestamp": "2011-07-06T22:51:29",
"content": "Just a minor quibble, he should have used some hot glue in the design to difuse the light from the LED.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414140",
"author": "Necromant",
"timestamp": "2011-07-07T12:52:14",
"content": "Off making mine with 555, blackjack… well, you got the idea.Anyway, awesome idea.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414271",
"author": "Techartisan",
"timestamp": "2011-07-07T16:31:24",
"content": "aww I was really hoping it had biofeedback control of the RGB…..Glowing Mood Necklace would have been neat.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414361",
"author": "Andrey Mikhalchuk",
"timestamp": "2011-07-07T19:55:01",
"content": "Techartisan: coming soon :) I have the prototype working.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415142",
"author": "bb",
"timestamp": "2011-07-09T07:28:30",
"content": "Andrey:Fyi, reminds me to someone elses similar project goal that I saw, but with more ‘parts’…http://www.flickr.com/photos/37996583811@N01/5873071291/in/photostream",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "663919",
"author": "Miss Raven",
"timestamp": "2012-05-30T21:10:26",
"content": "Hey, can anyone recommend a way for me to do this easily? I really don’t want to go through all this work for a few hours of battery life, and I need the power source to be replaceable (or at least the entire interior to be easily replaceable). I just honestly want a glowing locket, and I want to be able to keep it glowing.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,149.337413
|
||
https://hackaday.com/2011/07/05/paper-craft-claw/
|
Paper Craft Claw
|
Mike Szczys
|
[
"Misc Hacks"
] |
[
"claw",
"glue",
"paper",
"paper craft",
"tape"
] |
Grab some stiff paper and get to work
building your own paper claw
. [Dombeef] posted the instructions to recreate the claw above because he was unsatisfied with his previous design which was flimsy and unable to pick up just about anything. This version is a bit larger and it internalizes all of the parts.
Being paper craft, you don’t need much in the way of materials or tools. A push-pin makes holes for the paperclip and wire which serve as the pivot points. Glue and some tape hold the rest of assembly together. You can see a video of the final product after the break. A shaft at the center closes the claw when pulled, and opens it when pushed to opposite way. This makes it perfect for that
home-made crane game
(or was that
a claw game
?)… as long as you’re not trying to pick up anything too heavy.
[youtube=http://www.youtube.com/watch?v=d_zpLkn6-rE&w=470]
| 13
| 13
|
[
{
"comment_id": "413527",
"author": "bootnecklad",
"timestamp": "2011-07-05T23:04:58",
"content": "Time for an upgrade to metal? :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413530",
"author": "Dino",
"timestamp": "2011-07-05T23:10:08",
"content": "Yeah I might have to build one of these for my robot!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413538",
"author": "dombeef",
"timestamp": "2011-07-05T23:36:45",
"content": "I was thinking it could be made to fit anyones needs, it could be longer to pick stuff off the ground, It could even have more than 3 claws to pick up more complex objects, it could be made of metal to be stronger, etc",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413547",
"author": "Woofpickle",
"timestamp": "2011-07-06T00:49:30",
"content": "someone was watching thingiverse today…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413554",
"author": "andar_b",
"timestamp": "2011-07-06T01:29:36",
"content": "/LGMThe Claaaaawwwwwww/LGM",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413566",
"author": "Hitek",
"timestamp": "2011-07-06T02:38:19",
"content": "Lol@Toy Story reference! That’s the first thing that came to my mind, too, when I first read this… :)While this hack is awesome, this would be great done with layered corrugated cardboard for more strength. And then maybe even laminate the layered corrugated cardboard parts in a thin layer of fiberglass…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413572",
"author": "DeadlyDad",
"timestamp": "2011-07-06T02:48:13",
"content": "Hmmm… Do I detect the start of a kickin’ steampunk costume?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413578",
"author": "Hirudinea",
"timestamp": "2011-07-06T03:27:03",
"content": "Practice on a hotdog first… um, I mean, yea make it out of metal.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413608",
"author": "zs",
"timestamp": "2011-07-06T06:29:46",
"content": "totally want to make one at work from scrap steel.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413704",
"author": "dombeef",
"timestamp": "2011-07-06T13:27:34",
"content": "If you like it please vote, I tell why in the instructable",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413897",
"author": "robercal",
"timestamp": "2011-07-07T00:14:45",
"content": "It’s the claw!!!http://www.thejsworld.com/fifth/wp-content/photos/theclaw_sign.jpg",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "420766",
"author": "laurentio86",
"timestamp": "2011-07-21T13:10:23",
"content": "Am I the only one who think that claw is definitely a Graboid?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "421297",
"author": "dombeef",
"timestamp": "2011-07-22T14:36:02",
"content": "Yes, yes you are.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,149.383832
|
||
https://hackaday.com/2011/07/05/gps-lap-timer-from-secondhand-parts/
|
GPS Lap Timer From Secondhand Parts
|
Mike Nathan
|
[
"gps hacks"
] |
[
"atmega",
"gps",
"lap timer",
"lcd",
"racing"
] |
Hackaday forum member [nes] was training for an endurance race, and rather than having someone verbally call out his lap times,
he wanted something he could keep in-vehicle
to help keep track of his performance. With the race budget running dry, he and his teammates needed something cheap, if not free, to get the job done.
He scored a “broken” GPS receiver on eBay for a measly £4 and found that the receiver worked, but corrupted software prevented the unit from mapping routes. Since he didn’t require routing functions to keep track of his lap times, he splayed the GPS receiver open and started hunting around for a serial bit stream. He found what he was looking for after a bit of probing and hooked it up to his computer to see if the data contained NMEA sentences.
He cut the receiver down to the necessary parts and then started work on the lap timer itself. The timer uses an ATMega32 to run the show, displaying relevant time and location information on an LCD panel he scavenged from the trash bin.
He admits that the wiring is a bit questionable, but says that after about seven hours of rough use, everything is still intact and working great.
| 3
| 3
|
[
{
"comment_id": "413666",
"author": "Punkguyta",
"timestamp": "2011-07-06T11:00:02",
"content": "For what it’s worth, could he have not just worked on hacking a custom firmware onto the device instead of tearing it apart just for the GPS receiver, and from what I gather, a non-standard NMEA output that had to be parsed in order to obtain JUST the coordinates.This man probably could have saved himself some trouble and ended up with a nicer looking end product with a COLOUR screen!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413672",
"author": "nes",
"timestamp": "2011-07-06T11:36:30",
"content": "@Punkguyta: You hit on the point I was making by posting this up which was was also prompted by this earlier thread:http://forums.hackaday.com/viewtopic.php?f=4&t=896Basically I was pushed for time, and not having any data on the ARM / WinCE system used in the sat-nav I would have had a tough time trying to figure out a tool chain for it. Far more effective to spend a few hours building something to your own specs and concentrate on coding for that instead.Oh, and battery life and sunlight readability would have been issues with the colour screen. :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413721",
"author": "blue carbuncle",
"timestamp": "2011-07-06T14:50:08",
"content": "Hey I’m impressed :) Good job on getting something from nearly nothing lol. I saw a split open Garmin watch at the thrift shop I need to sweep up for weekend tinkering :) Happy running and thanks for keeping it off the street :)",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,149.426249
|
||
https://hackaday.com/2011/07/05/electronics-tutorial-twofer-soldering-skills-and-wires/
|
Electronics Tutorial Two-fer: Soldering Skills And Wires
|
Mike Nathan
|
[
"how-to",
"News"
] |
[
"basics",
"electronics",
"soldering",
"tutorial",
"wires"
] |
There is a plethora of electronics tutorials scattered about online. Sometimes it can be hard to separate the good ones from the bad, and the enlightening from the misinformed. We recently came across a pair that we found helpful, and thought they would appeal to anyone starting off in electronics.
In this video tutorial
, [Dave Jones] at the EEVblog covers soldering, detailing good practices and common mistakes to avoid when working with through-hole components. As the second video in a series
he picks up where part one left off
, excitedly demonstrating the ins and outs of good soldering skills.
Hackaday reader [grenadier] is working on a series of beginner’s electronics tutorials, and
this week’s entry covers wiring
. He discusses wire types, gauges, and even provides a nifty self-computing chart that calculates power loss based on the length and gauge of the selected wire. Before wrapping things up, he briefly touches on fuses and the pitfalls of choosing wire that’s not up to the task at hand. While you’re over there looking over his tutorial,
be sure to check out the Junkbox
, there’s plenty of awesome stuff to be had!
| 27
| 25
|
[
{
"comment_id": "413486",
"author": "Morten Larsen",
"timestamp": "2011-07-05T20:24:01",
"content": "Dave Jones rules!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413497",
"author": "drew",
"timestamp": "2011-07-05T21:16:37",
"content": "eev tutorial links are wrong way roundno biggie",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413499",
"author": "ultatryon",
"timestamp": "2011-07-05T21:23:09",
"content": "I am sorry, but he needs to stop doing speed if he wants me to watch his videos. While the subject matter is interesting, it is just too painful to listen to him speak.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413512",
"author": "Matt",
"timestamp": "2011-07-05T22:10:42",
"content": "Wish I had seen this before my electronics degree. Anyone got similar good tutorials for SMD components?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413523",
"author": "sneakypoo",
"timestamp": "2011-07-05T22:40:29",
"content": "@Matt:http://store.curiousinventor.com/guides/Surface_Mount_Soldering",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413528",
"author": "Matt",
"timestamp": "2011-07-05T23:05:22",
"content": "@sneakypoo: Awesome, thats perfect.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413536",
"author": "Spadman",
"timestamp": "2011-07-05T23:34:46",
"content": "Why do Americans pronounce solder as “sodder”? No-one calls a soldier a “sodjer”… it has an “L” in it, use it!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "468841",
"author": "Mike Dostoyevsky",
"timestamp": "2011-10-01T13:22:01",
"content": "Americans like their English friends have been conspiring for hundreds of years to confuse the everyone. The everyone then cannot wrangle the language into something sensible like an API. It is like an inoculation against settling on something regular prematurely; similarly, against people who think the present must make sense to itself without reference to a deep and tangled past (see etymology from “black soap” above, e.g.). Irregularity is the Clue. Irregularity tells you there is more there, so start poking around and finding it. It’s got its weak byproducts (resistance to scientific theories that effectively organize the world in the mind), but it’s the way language works. Prescriptivists and King’s English nativists may regret that they cannot colonize it. So putting a well-formed sentence on a superior footing to a senior engineer’s scrawl will always be a headache. I still scratch my head when I hear “Skeinforge” pronounced the Germanic way here in the USA, rather than the English/American way — but I have yet to take a pill for it. It is not so much of a headache. How’s that monetary union doing these days, by the way?",
"parent_id": "413536",
"depth": 2,
"replies": []
},
{
"comment_id": "2517645",
"author": "Nature_dave",
"timestamp": "2015-04-07T22:05:52",
"content": "There is also a “k” in know and knife. Do you pronounce those? Look it up in the dictionary.",
"parent_id": "413536",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "413560",
"author": "engineersteve",
"timestamp": "2011-07-06T02:09:11",
"content": "From someone who knows how to solder quite well, Dave’s tutorial has a wealth of information, I picked up a few good tips myself.For the US I like tech-wick and chemtronics wick, preferably not the no-clean version, it works better, I just clean it with some ethyl alcohol.@mattEEVblog will have a part 3 on SMT I believe. For SMT passives there isn’t much else to speak on, but I’m looking forward to hearing about smt IC’s to get a bit better with those 0.5mm pitch TQFP’s.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413590",
"author": "Ted",
"timestamp": "2011-07-06T04:44:08",
"content": "I wish he would stop sticking the soldering iron onto his fingers, gives me the heebee geebees.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413596",
"author": "Stevie",
"timestamp": "2011-07-06T05:17:26",
"content": "http://www.youtube.com/watch?v=fYz5nIHH0iY",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413597",
"author": "Stevie",
"timestamp": "2011-07-06T05:18:09",
"content": "I’ve posted the video in the comment above since HaD didn’t include it in their article.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413639",
"author": "norcalli",
"timestamp": "2011-07-06T08:52:45",
"content": "http://store.curiousinventor.com/guides/has the best videos ever.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413645",
"author": "MrFusion",
"timestamp": "2011-07-06T09:38:21",
"content": "Lesson 1:It’s not “SODDER”, it’s “SOL-DER”.:)PS: – Dave’s not on speed, it’s helium. Either that, or he’s a caffeine addicted chipmunk disguised as a human.;P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413678",
"author": "Dax",
"timestamp": "2011-07-06T11:55:43",
"content": "He’s got the theory spot on, but his technique seems a bit terrible.I work in a factory, hand soldering through-hole components and repairing the boards if there’s some smds missing or short circuits etc. and here’s the things I spotted.1) Never put the tip on the green coating. You’ll make the board look nasty, and also have a chance of delaminating the board and burning holes to it. Just don’t.2) Hold the tip vertically. Approach the pad from above and hold the side of the tip along the component’s leg and press the tip, or corner of the tip against the pad.3) Dab a little solder between the tip and the leg, which helps conduct heat much better to the leg. Press the leg of the component against the side of its hole and dab more solder at that point, and you should see the solder getting sucked into the hole because it follows the heat, and the leg of the component is hot.4) Lift the tip up by dragging it along the leg of the component quickly. The surface tension of the solder will make it stick to the tip and take the excess away.But if there’s still too much solder left: put the tip back to melt the joint, dab the joint lightly with solder to get new flux on it, and the excess solder climbs up the tip. Lift the tip off, clean it on the sponge, repeat if necessary.No need to fumble for the wick. Using the wick is a bit problematic anyways, because it conducts heat very well and you can easily burn the coating off the board with the end splaying around the pad.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413679",
"author": "Bill",
"timestamp": "2011-07-06T11:56:03",
"content": "In the USA the L is silent. Deal with it. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413682",
"author": "Dax",
"timestamp": "2011-07-06T12:07:19",
"content": "Of course, in a factory you would use a much hotter tip to work fast, and to get the solder through to the other side on boards that can be 2-3 millimeters thick with 8 layers.If you have a very thick board, or large areas of copper around the pad that draw the heat off, there’s a 10 second rule where you pre-heat the pad for 2-3 seconds, add solder, and hold the tip there a maximum of 10 seconds.If you have an iron with a power gauge, you can observe how the thermostat increases power to the tip as the pad draws the heat away from it. The power gauge is an indirect way to measure the temperature of the pad, since heat loss is proportional to the temperature difference between the heating element and the thing that it’s trying to heat. The power goes up, and once it starts to go down you know the pad is getting closer to the temperature of the tip and the solder should be climbing down to the other side.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413683",
"author": "G",
"timestamp": "2011-07-06T12:08:41",
"content": "From the Merriam-Webster Dictionary:sol·dernoun\\ˈsä-dər, ˈsȯ-, British also ˈsäl-dər, ˈsōl-\\So the preferred pronunciation is without the L sound. Smartasses.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413707",
"author": "that1guy",
"timestamp": "2011-07-06T13:36:52",
"content": "SMT components are not too bad but if there’s anything I can recommend – invest some money in a DECENT soldering iron. If you are spending less than 200 for an iron it probably isn’t ideal for SMT work. You need an iron that can get hot really fast and not lose all of its heat the second you touch a larger SMT pad. Especially if your board has a ground plane, the heat will get wicked away by the pad and your iron needs to be able to keep up. You can compensate by heating your board on a hot plate before soldering.Also, the actual solder pencil is extremely important. It needs to fit well in your hand and feel natural to use, and the cord has to be light enough to stay out of your way. For reference, this is the absolute best solder pencil I have used:http://www.amazon.com/Weller-WMRP-Soldering-Pencil-Stations/dp/B001D0GYPQ/ref=sr_1_16?ie=UTF8&qid=1309959376&sr=8-16",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413709",
"author": "Cybergibbons",
"timestamp": "2011-07-06T13:38:37",
"content": "G – no, the preferred pronunciation is solder. Merriam-Webster is an American English dictionary, so of course it mentions the American one first.Solder is used as a loan word in a lot of languages and it is always pronounced solder.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413715",
"author": "blue carbuncle",
"timestamp": "2011-07-06T14:37:28",
"content": "Can anyone post a link to the code for the soldering iron ADK? My iron turns on but I can’t get it to recognize the solder. Also I keep frying out serial cables trying to get them to handshake. Problems with my pwm perhaps?/To all who read this and are sweating- you simply need a bigger Arduino and to ground pins 4 and 6 together.//Also great tutorial and keep em coming HaD! Maybe we’ll have a blinking LED project that uses capacitors again instead of code if this real info keeps up :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413763",
"author": "G.Dubya",
"timestamp": "2011-07-06T17:20:32",
"content": "Listen up.This is an American hacking blog that likely has a readership mostly made up of Americans.The American English pronunciation of solder is “sodder”. It is pronounced as such in multiple dictionaries and even specifically cited as the “American” pronunciation in the Cambridge dictionary.Different countries can have different pronunciations. Around here we call it “sodder”. Deal with it or go read hackaday.co.uk.Americaaaaaaaaaaaaaa…fuck yeah!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413792",
"author": "G",
"timestamp": "2011-07-06T18:21:30",
"content": "It’s the preferred way to pronounce it HERE. By the fact that that’s how it’s stated in the dictionary (albeit an American dictionary) that’s the way we’re TAUGHT to pronounce it. It’s not a colloquialism, it’s not slang, it’s not due to some regional accent or lack of education or intelligence. It’s the accepted American pronunciation and that’s why Americans pronounce it that way.There are plenty of stupid people (in all countries) that mangle their respective languages but in this case (as with the whole aluminum/aluminium thing) we are pronouncing it the way it’s most commonly accepted here. So it’s different than yours, big deal. Not my fault, and I’m not gonna look like an idiot by pronouncing it “sol-der” in a room full of American engineers.And to the earlier point, I’ve never once heard an American refer to a soldier as a “sodjer”. We *do* pronounce the L there, sorry if it’s a bit softer than you may like.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413831",
"author": "Andreas Kosel",
"timestamp": "2011-07-06T21:06:10",
"content": "An awesome tutorial, very detailed!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414119",
"author": "dan",
"timestamp": "2011-07-07T12:23:52",
"content": "I agree that anyone should be able to use their countries respective way of saying something. especially if they are taking their time to help you out by providing helpful guides.To me sodder sounds strange, but that’s the way I’ve been taught…The only thing that made you look like a complete arse. (that’s arse as in buttocks, or fanny as you septics like to call it [and that has a different meaning in English too] not ass as in donkey) was this:>Deal with it or go read hackaday.co.uk..com originally specifies commercial, and whilst it has long been opened up to not just commercial entities, what it definitely does not signify is that it’s an American site… Perhaps if it were hackaday.us your point might have been valid. but it’s not.(for everyone too young or stupid to understand a joke, ass arse fanny fanny is clearly meant as a joke.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414365",
"author": "black soap",
"timestamp": "2011-07-07T20:14:22",
"content": "For anyone interested in looking it up, the word comes from a middle english word (“soudur”) without an “L” – unless you care to accuse the Middle English of getting the translation wrong, you have the choice of pronouncing the “L” and accepting you are saying an imported word, or leaving the “L” silent as it is pronounced in English.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,149.765232
|
||
https://hackaday.com/2011/07/05/take-to-the-skies-with-this-flying-rc-superhero/
|
Take To The Skies With This Flying RC Superhero
|
Mike Nathan
|
[
"Toy Hacks"
] |
[
"radio controlled plane",
"rc",
"toys"
] |
It’s a bird! It’s a plane! It’s….
A flying RC super hero?
No, you’re not imagining things. Maker [Greg Tanous] loves both RC airplanes and super heroes, so he thought it would be awesome to
combine his two loves into one spectacular toy
. The RCSuperhero comes in two flavors, measuring 75″ and 57″ tall. The larger plane can be purchased as a kit, but the smaller unit is only available in plan form.
The flying superhero weighs in at just about three pounds, and is constructed from foam, carbon fiber, and various other lightweight materials. When using the recommended motor, the RCSuperhero can be launched from a standing position, doing away with the need for runways. The craft looks to be just as maneuverable as any regular RC airplane, making it easy for any seasoned pilot to pick up the controls and get started.
RC planes are pretty cool, but we’ve got to admit that the idea of a vertically launching, flying superhero sounds like a lot of fun!
Stick around to see [Greg’s] RCSuperhero in action.
[youtube=http://www.youtube.com/watch?v=c1F1OpRxY-k&w=470]
| 42
| 42
|
[
{
"comment_id": "413433",
"author": "Marc",
"timestamp": "2011-07-05T17:28:00",
"content": "Coool",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413434",
"author": "sneakypoo",
"timestamp": "2011-07-05T17:29:28",
"content": "Now I could be all serious and type a well thought out response, or, I could just do this:That’s fucking awesome!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413436",
"author": "L1nk3D",
"timestamp": "2011-07-05T17:33:10",
"content": "That is pretty awesome I do have to say!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413439",
"author": "Limey",
"timestamp": "2011-07-05T17:43:30",
"content": "Where’s the cape? Would look so much more like a superhero with a cape.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413443",
"author": "andrew",
"timestamp": "2011-07-05T17:53:50",
"content": "Awesome.. He should paint it gold and red, and put some lights on it’s palms to look like ironman.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413444",
"author": "Squintz",
"timestamp": "2011-07-05T17:55:10",
"content": "That’s awesome.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413448",
"author": "mark g",
"timestamp": "2011-07-05T18:07:59",
"content": "@LimeyA cape would probably: cause excessive drag, kill lift, and possible foul the prop.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413449",
"author": "Stevie",
"timestamp": "2011-07-05T18:08:12",
"content": "So that’s how they do it in the Hollywood films!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413451",
"author": "Colecago",
"timestamp": "2011-07-05T18:24:13",
"content": "That looks kinda creepy",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413453",
"author": "karl",
"timestamp": "2011-07-05T18:28:56",
"content": "All it’s missing is a ‘phone booth to pop out of.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413455",
"author": "GPPK",
"timestamp": "2011-07-05T18:40:35",
"content": "That. Is. Awesome!!How does it fly? I can’t see from the video…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413457",
"author": "andar_b",
"timestamp": "2011-07-05T18:45:29",
"content": "I wonder how long before this gets sighted and reported to the local news and the so-called journalists try to make up something?Remember the one that said Jupiter was a UFO?It is totally cool from the videos, though a cape made from touile or tissue paper or something would make it even better. Still, without the cape this definitely has the “It’s a bird, it’s a plane…no – it’s a Superhero!” silhouette.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413460",
"author": "Vampyredh",
"timestamp": "2011-07-05T19:03:53",
"content": "All I have to say is……THAT IS FUCKING AWESOME!!!!!!!!I WANT I WANT!!!!!andDude you are about to make many of my kind very happy and yourself a very rich man.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413463",
"author": "M4CGYV3R",
"timestamp": "2011-07-05T19:10:27",
"content": "Even from the angles it doesn’t look like a normal person-type superhero, it looks like a friggin’ transformer or something…so it’s just that much cooler.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413464",
"author": "pRoFlT",
"timestamp": "2011-07-05T19:13:34",
"content": "i have some small helicopters and thought getting a RC plane again would be great. but like everyone has said THIS IS FUCKING AWESOME!!!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413466",
"author": "John",
"timestamp": "2011-07-05T19:18:26",
"content": "That is way too cool.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413467",
"author": "Phil Burgess",
"timestamp": "2011-07-05T19:19:20",
"content": "OMG, this would’ve been the greatest thing to have whizzing around on Rapture Day!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413474",
"author": "ferdie",
"timestamp": "2011-07-05T19:48:34",
"content": "i wand onebut it look even cooler if it come as a ironman version the feet have alredy the lights",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413475",
"author": "nikescar",
"timestamp": "2011-07-05T19:51:52",
"content": "That looks pretty convincing from a distance. Great idea!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413477",
"author": "AllThatJazz",
"timestamp": "2011-07-05T19:55:08",
"content": "Proof that with enough power, you can make a lawnmower fly. Oh wait, they already did that…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413485",
"author": "Rock Salt Lamps",
"timestamp": "2011-07-05T20:23:19",
"content": "This is really awasome…!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413496",
"author": "MrX",
"timestamp": "2011-07-05T20:59:45",
"content": "Holly sh**!!! This totally wins the HaD award of the year!! That guy has some really nice aeronautics skills! Serious, paint me impressed!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413503",
"author": "Max",
"timestamp": "2011-07-05T21:51:27",
"content": "Wouldn’t it have been easier to come up with a way for a regular person to fly with rocket propulsion built into gloves and boots like Iron Man?No?Can we do it anyway? :(",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413507",
"author": "Patrick",
"timestamp": "2011-07-05T22:07:49",
"content": "What’s the Big Deal.I can fly like that all by myself.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413513",
"author": "Patrick",
"timestamp": "2011-07-05T22:14:18",
"content": "I live near the White House, so I think it would be fun to have it zip by El Presidente during an out door event, just for fun of course.Though, I’m sure the Secrect Service would shoot it down, and I’d never see it again.On second thought maybe that’s a bad idea. Never mind.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413516",
"author": "joesugar",
"timestamp": "2011-07-05T22:24:48",
"content": "This guy just raised, nay destroyed, the bar for the rest of us.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413522",
"author": "Scott",
"timestamp": "2011-07-05T22:36:13",
"content": "THAT IS COOL!!!! I WANT!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413550",
"author": "j8g8j",
"timestamp": "2011-07-06T01:09:57",
"content": "This is sooooo cool! How does it land? By parachute?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413552",
"author": "arnold",
"timestamp": "2011-07-06T01:22:36",
"content": "Now all we have to figure out is how to reduce the effect gravity has on our bodies to the point where we only weigh 3 lbs!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413553",
"author": "andar_b",
"timestamp": "2011-07-06T01:27:22",
"content": "One of his other vids shows he has tiny landing gear on his pecs and chin, plus skids on his toes.Battery powered too.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413555",
"author": "DrSinister",
"timestamp": "2011-07-06T01:37:58",
"content": "Why does everyone want to be a “super hero” ?Being a “super VILLAIN” is much more fun.(a la “Evil Overlord”).Or perhaps the morally ambiguous“man-with-no-name” personifed by Clint Eastwoodwesterns.Being a “super hero” makes one adhere toa moral code of conduct.Super Villains (and Evil Overlords) have nosuch constraints.Now, if you’ll excuse me I have some prisonersto execute (corrupt politicans and cops). Nopretentious moral high ground here, just diga hole in the desert (a la Joe Pesci’s stylein Goodfella’s). Street Justice, not “super hero”morals.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413558",
"author": "ed",
"timestamp": "2011-07-06T02:06:13",
"content": "nice, you guys know how to have fun and thrills",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413593",
"author": "m1ndtr1p",
"timestamp": "2011-07-06T04:48:16",
"content": "Here’s another video with LEDs in the eyes, both hands and feet… All its missing is a red and gold paint job.http://www.youtube.com/watch?v=HxQgGdaQxBM",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413685",
"author": "robomonkey",
"timestamp": "2011-07-06T12:13:35",
"content": "It’s Ultraman!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413724",
"author": "Richard",
"timestamp": "2011-07-06T14:58:29",
"content": "I want one…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413751",
"author": "MrX",
"timestamp": "2011-07-06T16:46:07",
"content": "I can already see the people owning the rights over “Iron Man” selling Iron Man rc airplanes based on his design…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413813",
"author": "Sam",
"timestamp": "2011-07-06T19:19:24",
"content": "Edna: It will be bold! Dramatic!Bob: Yeah!Edna: Heroic!Bob: Yeah. Something classic, like, like Dynaguy. Oh, he had a great look! Oh, the cape and the boots…Edna: [throws a wadded ball of paper at Bob’s head] No capes!Bob: Isn’t that my decision?Edna: Do you remember Thunderhead? Tall, storm powers? Nice man, good with kids.Bob: Listen, E…Edna: November 15th of ’58! All was well, another day saved, when… his cape snagged on a missile fin!Bob: Thunderhead was not the brightest bulb…Edna: Stratogale! April 23rd, ’57! Cape caught in a jet turbine!Bob: E, you can’t generalize about these things…Edna: Metaman, express elevator! Dynaguy, snagged on takeoff! Splashdown, sucked into a vortex! No capes!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413824",
"author": "robo",
"timestamp": "2011-07-06T20:27:56",
"content": "Like everyone has said THIS IS FUCKING AWESOME!!!!Put some lasers and plasma cannons on it and send it to Pakistan!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413871",
"author": "Vampyredh",
"timestamp": "2011-07-06T22:24:15",
"content": "he did do a cape version.http://www.youtube.com/watch?v=NvHam3iuT-A&feature=related",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413932",
"author": "Aviator747",
"timestamp": "2011-07-07T02:00:35",
"content": "I used to fly rc years ago. That is pretty slick. I have seen flying witches, porsches and lawnmnowers. I am suprised this one hasn’t been done./demented modePush this setup off of a bridge or tall structure. And before it hits the ground, fire it up and fly away. hehe/demented mode off",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413934",
"author": "John",
"timestamp": "2011-07-07T02:03:30",
"content": "I hope the modelling community can continue to dazzle us with innovation and creativity of this magnitude without FAA restrictions!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "519439",
"author": "Viola Ladt",
"timestamp": "2011-11-26T10:41:47",
"content": "Thank you, you now have me thinking a little different, Thanks",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,149.58272
|
||
https://hackaday.com/2011/07/02/game-boy-communicates-directly-with-an-sd-card/
|
Game Boy Communicates Directly With An SD Card
|
Brian Benchoff
|
[
"Nintendo Game Boy Hacks"
] |
[
"gameboy",
"sd card"
] |
[kgsws] just finished his Game Boy upgrade that allows him to load games from an SD card. Loading a game off an SD card has been done before, but [kgsws] decided to not to use a cartridge-based device. In the end, he threw out all the stops and finished his project by having the
Game Boy access an SD card directly
.
[kgsws] his project trying to figure out how to put some GPIO pins on a game cartridge, but figured that this would take too much hardware. After looking at the specs of the link port, he realized that it was the wrong polarity. Not to be deterred, [kgsws] realized that there was something
like
a general-purpose I/O on the Game Boy – the
joypad input
.
After figuring out the logic of accessing the SD card through the joypad, [kgsws] set to work building a FAT32 parser and a simple BIOS on an EEPROM. The entire system runs off an ATmega32, and he was kind enough to include the
schematics
and
all the code
. The end result is really neat – it can load and save 512kB Game Boy ROMs and save data, read .txt files. As an added bonus [kgsws] put in a custom boot logo to replace the top-scrolling Nintendo logo.
While the joypad buttons don’t work when the SD card is being accessed, and the battery draw is larger than the already power-hungry DMG-001, we’re amazed by [kgsws]’s hardware hackery. Check out the video of [kgsws]’s hack below.
[youtube=http://www.youtube.com/watch?v=8tcam0vDfhY&w=470]
| 26
| 25
|
[
{
"comment_id": "412447",
"author": "phase",
"timestamp": "2011-07-02T15:34:26",
"content": "finished finished.Great post :). I love it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412448",
"author": "Paul Potter",
"timestamp": "2011-07-02T15:40:44",
"content": "Very nicely done.Did any games ever replace that boot logo? I’m wondering as it’s changes to a black box if no cartridge is installed. And of course, corrupts if there is a contact problem etc.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412453",
"author": "Villadelfia",
"timestamp": "2011-07-02T15:54:40",
"content": "No, no games did that because they could not. The boot logo is saved on the cartridge (which is why there is none without a cartridge and it is corrupted with bad contacts) and the bios does a checksum before loading the rest of the rom.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412454",
"author": "leerz",
"timestamp": "2011-07-02T15:58:47",
"content": "@Paul Potter, yes, from my experience, one of my old carts when I was still young said “nihihu” instead of nintendo, same thing was written on the cart itself (engraved), the profile of the cart seem to be smaller too.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412456",
"author": "Anonymous",
"timestamp": "2011-07-02T16:03:46",
"content": "Any chance this will work on a Game Boy Color?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412461",
"author": "FaultyWarrior",
"timestamp": "2011-07-02T16:23:28",
"content": "Great project! I like it!On a side-note – HaD…WTF is up with the recent rash of poor speelling an grammer [all sic]? It’s usually little stuff, but still.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412463",
"author": "furrtek",
"timestamp": "2011-07-02T16:25:40",
"content": "Some pirate cartridges showed a different logo by using some sort of address comparator chip to give out the good Nintendo logo when the BIOS was doing the check, and the modified one when it was copied to VRAM to be displayed on the screen.Those carts typically hang on the Gameboy color since the logo check isn’t performed in the same way.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412479",
"author": "zacdee316",
"timestamp": "2011-07-02T17:23:41",
"content": "@FaultyWarrior, I noticed that too. My guess is they have a new guy writing up the posts and he doesn’t know how to use spell check.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412482",
"author": "kgsws",
"timestamp": "2011-07-02T17:34:41",
"content": "FaultyWarrior: i am sorry for bad grammar, english is not my main laguage, feel free to correct meAnonymous: sure, but it will need some changes like bigger game RAM (MBC5 instead of MBC1) and bios in GBC modeAlso few notes,– ATmega32 is not used– it can’t save games, only 8kB RAM dumps",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412484",
"author": "t&p",
"timestamp": "2011-07-02T17:39:38",
"content": "The logo wasn’t on the system but on the romThis was used as a thing for Nintendo to keep you from programming on it as the Logo was copyrighted.In order to make a game work the bios check the crc of the logo and if it didn’t match it wouldn’t run the program.If you did put the logo in the rom Nintendo would sue you so hard for copyright of their restricted trademark that you basically couldn’t make a game for it professionally without their consent.This was done up to the NDS. Don’t know too much about the DSi or 3DS.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412497",
"author": "Miff",
"timestamp": "2011-07-02T18:19:39",
"content": "@t&p If I recall correctly, Sega (I think) tried that on one of their newer systems but when they went to court for it, the judge ruled that since the logo was necessary to run the software, copying it for that purpose wasn’t trademark infringement.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412524",
"author": "ChalkBored",
"timestamp": "2011-07-02T21:21:16",
"content": "@miffhttp://en.wikipedia.org/wiki/Sega_v._AccoladeThe SEGA in the rom was covered by the copyright part of the lawsuit.The trademark they sued over was“PRODUCED BY OR UNDER LICENSE FROM SEGA ENTERPRISES LTD.”That was displayed because of the string SEGA being in the rom, was also the only way Acoolade could get their games to run on the Genesis Mark 3.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412538",
"author": "Lovro",
"timestamp": "2011-07-02T22:40:35",
"content": "I love this sick people who know everything about digital electronics… I dont know shit how to make anything similar to this!!! Good work!!!!!! :P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412548",
"author": "dormantlabs.com",
"timestamp": "2011-07-02T23:04:31",
"content": "I really like all the wires on this hack.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412572",
"author": "bothersaidpooh",
"timestamp": "2011-07-03T00:12:58",
"content": "Nice, wondered when someone would get around to doing this.Actually there is a way around the copyrighted logo, just generate a file which has the same CRC as the real one. Verifiably NOT the copyrighted logo but the GB won’t care.Personally I think that the GB is so old now that Nintendo should basically say “go ahead, hack it if you like but don’t expect any support if you break it”… that would be kind of them.Plus its not like they would lose any money as no current games work for the GB/C any more.IIRC Myvu Corporation did the same thing, and interest in their product jumped substantially.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412683",
"author": "xorpunk",
"timestamp": "2011-07-03T11:35:47",
"content": "This is interesting. I would of put work in on something with a backlight and color, but to each their own.The security on nintendo devices has never been that complex, usually RAM partitioning bits in some form. You can kill most of them by glitching clocks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412725",
"author": "Paul Potter",
"timestamp": "2011-07-03T15:14:44",
"content": "Thanks for the info all.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415226",
"author": "JackH",
"timestamp": "2011-07-09T14:56:22",
"content": "Keep it up!Sell me a pack soon…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415335",
"author": "sanju",
"timestamp": "2011-07-09T20:30:58",
"content": "do gameboy advance also have a slot",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417113",
"author": "Will",
"timestamp": "2011-07-13T18:09:40",
"content": "@Sanju there are commercially sold GBA flashcarts that have SD card slots. example: the EZ Flash IV",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "425479",
"author": "Conner",
"timestamp": "2011-07-29T23:38:30",
"content": "I ‘m surprised that a hardcore hacker like this doesn’t have a website of his own to share on.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "592755",
"author": "Milovan",
"timestamp": "2012-03-01T18:16:13",
"content": "how to do this on gba",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "592757",
"author": "Milovan",
"timestamp": "2012-03-01T18:19:43",
"content": "how to make sd adapter for game boy advance",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "690221",
"author": "Julez",
"timestamp": "2012-06-28T12:05:53",
"content": "this looks great, I looked around at options, and short of shelling out $40 for a flash cart this is the best option. I had a few questions:How big can the SD card be? size limitations?would this work on a GB Pocket?is the original port usable after the mod? (just curious)this is a very interesting project, I think I am going to start this in a few weeks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "2784260",
"author": "Stipin",
"timestamp": "2015-11-04T20:32:48",
"content": "I want to make it, but the website is down :(",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "3017191",
"author": "devicemodder1",
"timestamp": "2016-05-11T02:24:23",
"content": "use archive.org.http://web.archive.org/web/20111025174357/http://gamehacking.org/vb/threads/5297-Game-Boy-communicates-directly-with-an-SD-card",
"parent_id": "2784260",
"depth": 2,
"replies": []
}
]
}
] | 1,760,377,149.704414
|
||
https://hackaday.com/2011/07/01/a-mame-cabinet-fit-for-a-doctor-who/
|
A MAME Cabinet Fit For A Doctor (Who)
|
Mike Nathan
|
[
"home entertainment hacks"
] |
[
"arcade",
"dr. who",
"mame",
"tardis",
"video games"
] |
While many people would be satisfied leaving a MAME console on their desk, others take the time to put their MAME creations in a nice, authentic arcade cabinet. Some people like [Simon Jansen] take the craft to a whole new level,
crafting a TARDIS from the ground up in order to house a MAME console
.
It all started with a computer that had no real purpose. [Simon] decided it would be great to use as a MAME console, so he started brainstorming ideas for an enclosure. As he tells it, he was staring out a window looking for inspiration when his eye caught a giant billboard for [Dr. Who], complete with a TARDIS. The rest was history.
The MAME cabinet is about 3/4 the size of an on-set TARDIS, and crafted mostly from MDF. Plenty of time was spent analyzing the different TARDIS designs featured on the show over the years, paying special attention to even the smallest of details. Once the construction of the TARDIS was complete, [Simon] started work on the MAME portion of the project.
His MAME console was built to completely fit inside the TARDIS when closed, but it also had to take into account the box’s inward folding doors, which take up a good bit of space. The base was also made from MDF, and includes a durable white plastic panel in which the controls are mounted.
The final result is amazing – it does the TARDIS justice, and it looks like plenty of fun to play as well.
| 20
| 20
|
[
{
"comment_id": "404464",
"author": "Scott",
"timestamp": "2011-06-11T17:58:07",
"content": "EPIC, nothing else to say but EPIC Great job",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "404471",
"author": "Hackerspacer",
"timestamp": "2011-06-11T18:22:46",
"content": "I seem to recall the actual TARDIS being quite a bit bigger inside than this build.Made out of MDF… this thing must weigh a ton! Awesome build though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "404480",
"author": "BobSmith",
"timestamp": "2011-06-11T19:04:47",
"content": "The LCD panel just sitting on top is a bit lame, in comparison the rest of an amazing build. It should be housed somehow, to fit with the rest.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "404486",
"author": "ehrichweiss",
"timestamp": "2011-06-11T19:19:44",
"content": "You haven’t read the instructions, have you? They’re on the door, what does it say at the bottom?Pull to open.;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "404488",
"author": "Vitti",
"timestamp": "2011-06-11T19:23:27",
"content": "@Hackerspace this is a 3/4 scale build.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "404494",
"author": "Decius",
"timestamp": "2011-06-11T19:51:49",
"content": "@BobSmithThat’s so the insides can fold in.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "404516",
"author": "Havel",
"timestamp": "2011-06-11T21:16:16",
"content": "Smashing! I can now go off to defeat the Daleks… Again!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "404518",
"author": "Max",
"timestamp": "2011-06-11T21:21:26",
"content": "*GASP* It’s bigger on the inside!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "404548",
"author": "Simon",
"timestamp": "2011-06-11T22:42:52",
"content": "Heh, funny seeing this here. I was sure it had been posted before? It’s 3/4 scale because my ceilings aren’t big enough for a full scale model. It wouldn’t fit in the house! The monitor does need finishing really. I never did get around to that.And the pull to open thing in the recent Dr Who annoyed me. It is true that real police box doors opened outwards the “Pull to Open” on the sign actually refers to the small door behind which there was a telephone.It’s so sad I know that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "404570",
"author": "ferdie",
"timestamp": "2011-06-12T00:22:36",
"content": "whats out that the doctor not call te tardis backfor the next part of the serie.now i now ware the doctor is go towhen he run of in the serie XD",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "404574",
"author": "ferdie",
"timestamp": "2011-06-12T00:33:16",
"content": "But it look gread nice jobonly that lcd must be in style of the lcd screen in the tardis i think that make it compleet i think.im a big Doctor who fan from the nieuw serieand for the fan,s david tannant wil be back play the doctor how i no it take a look at imdb and the cast list for this serie",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "404575",
"author": "neorazz",
"timestamp": "2011-06-12T00:35:39",
"content": "it needs a sonic screwdriver and a few more random things attached to the console to look more like the newest tardis console",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "404616",
"author": "josh",
"timestamp": "2011-06-12T02:48:59",
"content": "@vitti I think you missed the joke that hackerspace was making.I’ve thought of doing something like this, only a Dalek or Cyberman build. Was the blue a difficult color to match, or was it an off-the-shelf color?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "404636",
"author": "Simon",
"timestamp": "2011-06-12T03:42:33",
"content": "@Josh The blue was tricky. If you watch the series you’ll see how the colour changes along with the Tardis props over the years. I don’t know if there is any official Tardis blue. I just picked something out of the colour charts that seemed right! You can’t see it in the pictures but the paint is heavily applied with a coarse brush to simulate wood grain. MDF is completely smooth of course.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "404737",
"author": "critic",
"timestamp": "2011-06-12T11:47:36",
"content": "@SimonI thought it was posted here already, too, but apparently it was on Makezine 4 years ago:http://blog.makezine.com/archive/2007/03/tardis-mame-console.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405180",
"author": "robomonkey",
"timestamp": "2011-06-13T11:50:28",
"content": "Saw this years back when researching my mame cabinet….awesome all the same.With infinite time I’d do a B9 robot mame cabinet build…um, can I borrow the TARDIS for a bit?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405279",
"author": "IJ Dee-Vo",
"timestamp": "2011-06-13T16:35:44",
"content": "Awesomeness",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405509",
"author": "medwardl",
"timestamp": "2011-06-14T05:49:03",
"content": "If you do a printout of one of the tardis console rooms large enough to fit the whole door stick it behind the console and it could look bigger on the inside.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406114",
"author": "PoodleNoodle",
"timestamp": "2011-06-15T13:19:04",
"content": "Is this the same guy behind the beer brewing Bender?http://i.imgur.com/lXPxs.jpg",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "424500",
"author": "Josh",
"timestamp": "2011-07-28T14:54:38",
"content": "Hehe, wanted to add this before the article is repaired:Looks like the Doctor himself took this project for a joy ride, because the article jumped to the impossible publication date of Nov 29th 1999 ;-)",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,149.64338
|
||
https://hackaday.com/2011/07/01/automated-led-hallway-lighting/
|
Automated LED Hallway Lighting
|
Jeremy Cook
|
[
"home hacks"
] |
[
"home easy",
"led",
"lighting"
] |
If normal hallway lighting just doesn’t live up to your standards,
this hack
may be for you. When [Sean] fitted his kitchen, he replaced the flooring leading up to it. In true hacker form, he decided to forgo (supplement?) traditional lighting and came up with his own solution.
This solution involved embedding the skirting used around his hallway hardwood with blue LED lights. Unfortunately, these LEDs were actually longer than the skirting was thick, so some plaster carving was also necessary. It is all hidden very well behind the skirting, so you can’t tell. These blue LEDs give a really cool effect, similar to what can be seen at some movie theaters.
Although impressive in itself, [Sean] decided to also hook his setup up to a
“Home Easy”
device for control. A passive infrared sensor for this system has also been ordered so the lights can turn on without human interaction. We can see this being fantastic for those late night trips to the kitchen for a drink. With this low light solution, you won’t be wondering back to the bedroom without your night vision.
| 14
| 14
|
[
{
"comment_id": "412238",
"author": "Keith",
"timestamp": "2011-07-01T19:55:15",
"content": "LEDs are always nice. Not that he needed anything else for this project, but if the LEDs were all home wired individually you could add effects like chasing and cascading.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412262",
"author": "TheCreator",
"timestamp": "2011-07-01T21:10:02",
"content": "Should use a narrow angle infrared IRLED and photo-transistor combo for the trip wire. paired with a Uc and transistor/ mosfet to drive LED’s and create effects.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412295",
"author": "Dax",
"timestamp": "2011-07-01T23:41:43",
"content": "Is it just me, or does it look a bit tacky to use LEDs like this?It always reminds me of the bar in a cheap holiday cruise ship with the tiny spots of light on the staircases to make it seem more “70’s disco” than it should?I think it might look better if you instead put a small gap or a groove to the baseboard and let the light shine out of it, spread more evenly.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412296",
"author": "Mr. Name Required",
"timestamp": "2011-07-01T23:52:48",
"content": "nice idea – I had the same thought long ago, so that I wouldn’t need to turn on lights when I got up in the middle of the night. But blue LEDs? Of all the color LEDs available, blue has to be the most unfriendly and emotionally cold. Blue LEDs started appearing on everything ten years ago when they could finally manufacture them properly (ie ‘Because they could’), but thankfully this fad has changed and we get good old green and red again. But personally, give me warm white LEDs anyday.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412297",
"author": "Dax",
"timestamp": "2011-07-02T00:00:40",
"content": "Also, warm lights are more suitable for low levels of illumination, because while stark blue light may look cool and you can sense it at lower intensities, it tends to bleach the rhodopsin in the eye.Rhodopsin is responsible for low-light vision, and it’s the fourth primary color that we can sense, appearing kinda like purple, but it only works if there’s very little light. It’s the twilight color.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412303",
"author": "Brian",
"timestamp": "2011-07-02T00:19:36",
"content": "@Mr. Name RequiredI don’t know, I /like/ the cool blue. You can’t tell from this picture, but I wouldn’t want them too bright. They would need to provide a small amount of illumination, but not so much as to kill any low-light vision you have. Being as they can be seen fairly well with the normal lights on, I think these would be too bright for my personal liking.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412321",
"author": "AussieTech",
"timestamp": "2011-07-02T01:49:54",
"content": "It is worth noting that red rather than blue should be used since blue light resets your circadian rhythm.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412335",
"author": "steve",
"timestamp": "2011-07-02T03:49:17",
"content": "cool, haz leds",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412336",
"author": "steve",
"timestamp": "2011-07-02T03:49:44",
"content": ">blue light resets your circadian rhythmGarbage, not at this intensity",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412341",
"author": "elias",
"timestamp": "2011-07-02T04:46:08",
"content": "“…you won’t be wAndering back to the bedroom…”Jesus, I’m not even a native english speaker.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412357",
"author": "mixadj",
"timestamp": "2011-07-02T06:06:00",
"content": "I would have gone with red to preserve night vision…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412362",
"author": "patman2700",
"timestamp": "2011-07-02T06:38:44",
"content": "I’ve got to admit, this post was quite well-written, except for the “wondering” at the end – a simple typo that spell-check won’t catch.Interesting idea. I would’ve rather used a diffused acrylic trim that would fan out the LED’s glow. As Dax said, I, too, think they look a tad tacky.@mixadjOn that note, better to use a simple uC to control the lights via PWM and make them pulse softly at night, as with a bunker. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412557",
"author": "D_",
"timestamp": "2011-07-02T23:24:39",
"content": "Me. I’m wondering why they cut a channel into the plaster to make room for the wiring, rather than cut the channel into the back of the mop boards?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413140",
"author": "nebulous",
"timestamp": "2011-07-04T14:14:16",
"content": "I’m not a native English speaker either, but the words ‘wondering’ and ‘wandering’ mean completely different things, and it irked me too. Take the crit in stride, and just learn from it, dude. :)Nice idea this. Plenty could be done in terms of animation, to make it look even cooler. And I agree on the warm glow beating harsh points of light.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,149.852764
|
||
https://hackaday.com/2011/07/01/boobie-board-powered-twitter-notifier/
|
Boobie Board Powered Twitter Notifier
|
Mike Nathan
|
[
"Microcontrollers",
"Misc Hacks"
] |
[
"boobie board",
"lua",
"notification",
"twitter"
] |
The team over at Archonix frequently challenge themselves to create a full working project in under 20 minutes. [Andrew Armstrong] put together a blog post detailing their most recent “Quickproject” –
a simple Twitter notifier built using their Boobie Board
.
They started by putting together a small notifier breakout module that could later be attached to their Boobie Board. The module is pretty simple and includes a trio of LEDs to alert you to activity across several online services, though only the Twitter notification module is currently complete. The notifier’s code was written in LUA, and primarily designed to interact with Linux desktops. They do not currently have a Windows compatible version of the code available, but they are more than happy to host it if someone desires to port their code over.
The notifier was put into an old candy tin with a plastic window, which is perfect fit for their project. All in all, the entire thing took them about 40 minutes, with half spent on hardware, half on code. The notifier does just what it was intended to do, but they have a healthy list of improvements that they would like to add, including the use of the other two notifier LEDs.
| 16
| 15
|
[
{
"comment_id": "412263",
"author": "mad_max",
"timestamp": "2011-07-01T21:16:37",
"content": "Haha, boobie.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "412312",
"author": "Matt",
"timestamp": "2011-07-02T00:53:39",
"content": "Beat me to it :p",
"parent_id": "412263",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "412270",
"author": "dr_strangelove",
"timestamp": "2011-07-01T22:08:58",
"content": "haha, that’s what i thought.but i was too embarresed to write it.btw site is down :/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412327",
"author": "GCL",
"timestamp": "2011-07-02T02:23:51",
"content": "Very funny.But their site is not at home. I suspect its off on a dinner break. Or worse.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412347",
"author": "Senthil",
"timestamp": "2011-07-02T05:24:20",
"content": "You can do the same using phidgets too. here is the documentation:http://www.uthcode.com/blog/2011/04/tweets-on-phidget-LCD-using-python",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412368",
"author": "con-f-use",
"timestamp": "2011-07-02T07:44:05",
"content": "Is it just me, or is there no way to buy a boobie board on the whole website?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412378",
"author": "Mike Calder",
"timestamp": "2011-07-02T09:26:01",
"content": "It looks like you can’t buy these boards anywhere, no-one knows pricing, the software on Instructables is alpha, and there is nowhere a precise definition of what the board actually does (apart from vaguely being a i/o pin driver via a usb serial port with some simple Lua demo software).I’d guess this is some guy’s attempt at market research for a simple sub-Arduino project to see if there is sufficient latent demand before setting up production and a supply channel.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412384",
"author": "Andrew",
"timestamp": "2011-07-02T10:03:58",
"content": "Hi guys, sorry if our site was down I think our host gets overloaded from time to time.The Boobies are currently in their final stage of production with final revision hardware (much better than whats on the site) hence no shopping cart, however, I can see now it is best to let potential customers know this and I will mention it on the site.Cheers,Andrew",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412388",
"author": "liebesiech",
"timestamp": "2011-07-02T10:45:16",
"content": "Boobie? Well, something get’s into my mind but I believe they refer to thishttp://www.galapagos-inseln.net/blaufusstoelpel-blue-footed-boobie/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412401",
"author": "Haku",
"timestamp": "2011-07-02T11:35:48",
"content": "@con-f-use, on the main page for the product it says you have to email them for pricing and availability, which suggests to me they’re prohibitively expensive for hobbyists.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412406",
"author": "Andrew",
"timestamp": "2011-07-02T11:55:23",
"content": "With regards to Haku’s comment about the price, I can assure they are not prohibitively expensive – our target market is hobbyists.It is just that we have not started shipping yet.Incidentally, if anyone wants to leave a message in the appropriate section in our forum (under Boobie Boards – Beta Testers) there as a chance they will receive free hardware when we start shipping.Andrew",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412480",
"author": "LeftyX",
"timestamp": "2011-07-02T17:24:42",
"content": "Andrew, please let us know what processor chip this is based on.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412653",
"author": "Andrew",
"timestamp": "2011-07-03T08:16:43",
"content": "LeftyX with regards the processor I have not mentioned it as I am still confirming the final design, but as it stands it is a PIC16F688 with all pins available on the header.In the case where there are already peripherals fitted on the board such as oscillator, USB converter (FTDI RS232R), these can all be disconnected via solder-jumpers so the user has full control in their own designs.There is also a programming header that will accept any of the recent microchip ICD programmers and the pickit2.What is not shown are the accessories, I will be updating the site to show these, the most important of these is a the development board and enclosure. The enclosure has laser cut end panels so your projects can be professionally finished.This is to allow the more advanced hobbiest to “finish” their project.With regards the software being in alpha, its just open source sample code we have released as an API to your desktop. We do not define how the user has to interface to the boards, however we do pre-program them with a basic interface so that you can use the boards out of the box.For the most part, it is how we end up using the boards ourselves, rarely dipping into programming the boards directly. The headers are very development board friendly.Occasionally we do program them directly when experimenting, e.g. to play a tune on a piezo element, read/write to an SD card, perform some basic signal processing.Andrew",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412656",
"author": "Mike Calder",
"timestamp": "2011-07-03T08:42:54",
"content": "Thanks, Andrew; info like that on a detail page on the website would be good, as would some description of the “basic interface” that you intend.Remember, if you’re marketing to hobbyists, they’re infovores.I’d be interested in picking up a couple if the price point is reasonable compared to competitors – bit whackers and servo controllers can be had between £9 and £20 or so in the UK – it’s always nice to see local stuff.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413085",
"author": "elektrophreak",
"timestamp": "2011-07-04T09:53:50",
"content": "boobie board?want one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "563414",
"author": "Andrew",
"timestamp": "2012-01-20T15:52:37",
"content": "Thanks to all the Beta testers for their support, we are happy to announce the production units are now available.Latest revision Boobie Boards now available athttp://www.archonixtech.comThere is a GIT source repository being kindly hosted athttps://github.com/lokidokicoki/boobieThanks,Andrew",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,149.905803
|
||
https://hackaday.com/2011/07/01/flogo-a-floating-foam-logo-generator/
|
Flogo – A Floating Foam Logo Generator
|
Mike Nathan
|
[
"Misc Hacks"
] |
[
"advertising",
"bubbles",
"flogo",
"helium",
"stencil"
] |
Check out this floating foam letter machine that was shown off at last year’s IFA show in Berlin, the German equivalent of CES.
The contraption is called Flogos
, and comes from a company named SnowMasters based out of Alabama.
The Flogos machine consists of a helium and compressed air bubble generator positioned below a custom stencil cutout. As the bubbles form, they are forced into a relatively tight formation as they exit the stencil. Once a nice thick layer is established, a small plastic arm is dragged across the surface, liberating the foam from the stencil allowing it to float through the sky as you can see in the video below.
We think it’s pretty cool, and we wouldn’t mind having one around just for kicks. If you were to lay some stencils over a tweaked version of
this foam generator we featured last year
, you could probably have your own floating foam printer up and running in no time.
Stick around to see the video from IFA that originally caught our attention.
[Thanks DMF]
[youtube=http://www.youtube.com/watch?v=rN-mfQsno2g&w=470]
| 29
| 29
|
[
{
"comment_id": "412195",
"author": "Alex",
"timestamp": "2011-07-01T17:27:25",
"content": "Very clever! I like that it’s not over-engineered. Stencils work just fine.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412197",
"author": "Oren Beck",
"timestamp": "2011-07-01T17:30:46",
"content": "Why waste good Helium when Hydrogen might add some effects potential?Dyes+ Lasers with enough Testes to provide Foam Ignition- even on a “Per Color” granularity being one path to investigate.This is a VERY nice basic concept Hack that may end up spawning many Stunning derivatives.I will be trying to clone this someday.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412199",
"author": "bob",
"timestamp": "2011-07-01T17:37:02",
"content": "I’m not a big fan of pissing helium away into space.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412200",
"author": "Alex",
"timestamp": "2011-07-01T17:43:14",
"content": "@bob: better start stockpiling then, because right now helium is inexpensive and available to anyone who wants to inflate balloons!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412205",
"author": "abobymouse",
"timestamp": "2011-07-01T18:03:10",
"content": "Helium is a non-renewable gas. Any bulk users of helium (eg NASA) are careful not to waste it; not just to keep costs down but because they know it’s non-renewable.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412218",
"author": "Alex",
"timestamp": "2011-07-01T18:46:04",
"content": "@abobymouseWhen they finally get fusion plants up and running, we will have plenty of helium! But you’ll want to stock up on hydrogen.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412222",
"author": "brad",
"timestamp": "2011-07-01T18:56:09",
"content": "@abobymouseNASA waste things? Don’t be ridiculous.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412228",
"author": "abobymouse",
"timestamp": "2011-07-01T19:04:40",
"content": "http://www.nasa.gov/offices/oce/appel/ask-academy/issues/volume3/AA_3-3_F_helium.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412234",
"author": "fabien",
"timestamp": "2011-07-01T19:34:54",
"content": "Ok, that’s beautyfull. But… :-How much soap did they spread in environnement just to make their demo ?-Is hackaday the right place to speak about something that shows its patent number everywhere on the website ?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412239",
"author": "Will",
"timestamp": "2011-07-01T19:56:59",
"content": "@abobymouseI feel this thing uses far less helium, than your average child’s brithday party. think HUGE waste of helium there. At least this thing is fun",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412251",
"author": "Volkemon",
"timestamp": "2011-07-01T20:29:31",
"content": "Wow… try following MAKE: online and you would have seen this almost two years ago… Still cool, and the laser+hydrogen addition…… good idea Oren!!!http://blog.makezine.com/archive/2009/08/commercial-technology-for-floating.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412256",
"author": "Hirudinea",
"timestamp": "2011-07-01T20:39:42",
"content": "Needs coloured bubbles.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412267",
"author": "Drake",
"timestamp": "2011-07-01T22:00:26",
"content": "Now suspend a throwie in it …Or @OrenMake it a game … Shoot the err logo?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412269",
"author": "Elias",
"timestamp": "2011-07-01T22:08:10",
"content": "That is very cool for sure :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412304",
"author": "M4CGYV3R",
"timestamp": "2011-07-02T00:20:51",
"content": "It’s like cartoon smoke signals, except for real.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412326",
"author": "Hack Cell",
"timestamp": "2011-07-02T02:20:08",
"content": "Like for these comments, M4CGYV3R, Oren Beck, abobymouse@fabien, Who cares if they’ve got a patent number on their site? And it is a form of physical advertising that doesn’t leave any actual trash left over so I will overlook the minuscule bit of bubble liquid spread into the environment by the few of these machines that exist. If you want to complain about environmental stuffhttp://www.nytimes.com/2010/08/03/us/03spill.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412328",
"author": "Joshua",
"timestamp": "2011-07-02T02:29:32",
"content": "Hydrogen and a laser sounds awesome.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412334",
"author": "nikescar",
"timestamp": "2011-07-02T03:46:29",
"content": "If they made a matrix of holes that could be opened and closed they’d have a dot-matrix foam printer.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412344",
"author": "notmyfault2000",
"timestamp": "2011-07-02T05:00:59",
"content": "Helium is non-renewable? Doesn’t it go right back where it came from (i.e. the atmosphere) just to be harvested again?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412345",
"author": "Techie",
"timestamp": "2011-07-02T05:16:54",
"content": "@notmyfault and others: of course Helium is renewable if you are counting on another “Big-Bang”….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412375",
"author": "CameronSS",
"timestamp": "2011-07-02T08:52:09",
"content": "@notmyfault2000: Helium is refined from natural gas deposits. It’s too light to stay in the atmosphere and eventually floats off into space. Natural gas reserves are directly proportional to helium reserves.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412408",
"author": "benboy00",
"timestamp": "2011-07-02T12:06:29",
"content": "I call toast. This thing was posted ages ago.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412409",
"author": "benboy00",
"timestamp": "2011-07-02T12:07:00",
"content": "Possibly not from these people though",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412639",
"author": "Trivino",
"timestamp": "2011-07-03T06:23:59",
"content": "Mr Oren Beck, please forgive my ignorance, but what “Dyes+ Lasers with enough Testes to provide Foam Ignition” really means?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412681",
"author": "FBI, Agent Douglas",
"timestamp": "2011-07-03T11:24:58",
"content": "This is a neat machine, would be great at our meetings (not everyone listens) colored bubbles would be great but UV bubble mix would be better and have a much cooler effect at night. Sell these to the ravers and you have your main market.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412735",
"author": "Oren Beck",
"timestamp": "2011-07-03T16:16:42",
"content": "@Trivino:I’m just a working stiff often called a “Senior Engineer” So bear with me a moment while I flesh out the concepts behind my comment.In one overly simplistic explanation:Dyes WILL burn if you pump enough thermal energy in. Power level= Testes AkA “Balls” in crude terminology..I’ve been asked by PM to expand on this for a few folks waiting for me to prototype something.. Be patient on a model- my Real Soon Now list’s a bit full. But for the moment- here’s the fleshing out:Your basic “bubble” of any soap based chemistry tends to be mostly transparent at the single bubble level. That “mostly” qualifier applies to effects like scattering and diffraction which in bulk masses of bubbles produce an appearance of “white” as the reflectivity averages a net balance.Which makes any color of Laser inherently be reflected plus diffused by each bubble’s inner and outer wall. Further details like power per unit of area calcs are out of scope here.The simplest videos showing the effect are those of a red Laser bursting a blue balloon inside a red balloon.Thus, dyes could potentially reproduce the effect in dyed masses of bubbles.Oh, there’s a whole basic field we could play “Laser Whack-A-Bubble” in. By tuning dye and bubble ratios to interact with Lasers of varied color, focus and beam diameter.IF any of us make something AWESOME from all this- do please open source it as a matter of Karma..Using 100% O2 in some foam areas and 100% H2 in others could make it go from ignition to detonation..Don’t try that one– EVER, lest ye wish to meet Darwin.The history lesson to close this for now describes how a Razor blade became a unit of relative Laser power:http://www.techrepublic.com/article/geek-trivia-measures-for-leisure/6070431",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413128",
"author": "talkingjazz",
"timestamp": "2011-07-04T13:01:15",
"content": "But of cause you might run into problems shining lasers up into the sky.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "3028816",
"author": "Liz",
"timestamp": "2016-05-22T20:35:05",
"content": "How totally utterly disgusting and wasting helium :'(",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "3417068",
"author": "SP VERma",
"timestamp": "2017-02-19T13:28:08",
"content": "someone please give idea about how to make helium gas at home with cheap and accident free method. or can we use hydrogen in place of helium, what would be effect if we use home made hydrogen",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,149.970262
|
||
https://hackaday.com/2011/07/01/livescribe-shuts-down-developer-program/
|
Livescribe Shuts Down Developer Program
|
Brian Benchoff
|
[
"News"
] |
[
"developers developers developers",
"livescribe",
"smartpen"
] |
[Kelly] sent in a tip saying that Livescribe, the company behind a remarkable smartpen able to record handwriting, was shuttering the developer program by taking down their dev forums and removing the SDK, taking away the ability to write custom apps. [Kelly]
posted about this on her blog
.
Livescribe has a thriving community around it and the
pens
themselves have had some incredible hacks, like
Zork played on an Echo smartpen
.
Livescribe’s official reason for shutting down the development program is to concentrate on, “cloud access, storage and services.” While we’re still wondering why Livescribe would sideline the developers that give a platform more functionality, it’s astonishing that a company would take down the SDK and delete the dev forums of their own product.
Although the largest Livescribe development and hacking forum has been shut down, we fully expect an independent forum to pop up within the week. We’ll be sure to post a link to that forum when we get word of it. If you know where the new forum is, be sure to send it into the
tip line
.
| 35
| 32
|
[
{
"comment_id": "412148",
"author": "xorpunk",
"timestamp": "2011-07-01T15:18:45",
"content": "why? cause companies die by force when they don’t cover costs..who here had one?I work in software, I know all about the general public wondering how no-return affects your company..people who aren’t even ‘in the game’ have it all figured out though..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412152",
"author": "scottb",
"timestamp": "2011-07-01T15:25:43",
"content": "ill be happt to provide and host the website if anyone wants one and can provide a copy of the sdk",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412154",
"author": "teabaggs",
"timestamp": "2011-07-01T15:31:07",
"content": "I don’t think its so much a money issue (we can’t affort to support the community, please support yourselves) as it is a (we losing our f*king asses on software and game opportunities by having all these close minded, shitty developers coming up, or not coming up, with ideas to support our hardwar product)Livescribe: we’re sorry we cannot continue to support the maintenance and monitoring of our independent developer community. As such, we have turned over our forums to (Hackaday, makezize, instructables, etc) and are no longer supporting, nor will continue development on the public SDK.This is a lot different in tone fromScrew you guys. I’m going home. and I’m taking my ball.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412160",
"author": "Aaron",
"timestamp": "2011-07-01T16:01:03",
"content": "xorpunk: I think you called it; I’ve never even known anyone who knew anyone who had one, and I have been asking because I’m interested in the idea even if it does strike me as probable that “pen computing” will never be anything other than an awful hack with a terrible user interface.teabaggs: I realize there are a lot of people who are putting their emotions into this, the same way there were over (for example) TI telling hobbyists they could either quit reversing the units’ encryption keys or get the fuck out entirely. But there’s no reason to do so. There’s no spite or malice coming from Livescribe, at least not where anyone can see it; the strong impression I get, given their statement and especially given the times, is that this is what the company is doing because it’s either this, or go out of business entirely — and what good would that do the developer community?Could they have done it more gracefully? Of course they could have. But given that their entire product line is aimed at what is at best a niche market — I doubt they intended that, but that’s how it’s turned out — I have a sneaking suspicion that, by this point, they’re getting pretty damn desperate to avoid a situation in which they’ll be forced out of business no matter what they do. It’s a shame that this is the only way out they see, but I don’t blame them for doing it if they feel they have to, especially in these times. I hope it works out for them the way they need it to.(And you should too! Because if it does, then maybe they’ll get to a point where they’re flush enough again to reinstate their SDK and developer program. No guarantee it’ll happen, of course…but if the company goes out of business, that’ll certainly guarantee that it *won’t*.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412163",
"author": "DeAuthThis/Corrosion",
"timestamp": "2011-07-01T16:13:34",
"content": "I’d put one up today but I’ve gotta goto work and if I pay for a domain now we’ll… it’ll end up we have 3-4 forums and the one done first wins… so….. yeh…If theres no word by sunday perhaps but I’m sure a new one will be up today if anyone’s ambitious",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412168",
"author": "xorpunk",
"timestamp": "2011-07-01T16:28:47",
"content": "All I can say, is try your own philosophy and logistics on your own company and see how long you last..If it was easy there wouldn’t be a fortune 500..I see electronics and software companies tank at least a couple dozen per-year do to no-return or not enough return in one way or another. If not enough people buy your product..get this..you can’t make anymore or fully support it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412177",
"author": "Hungry_Myst",
"timestamp": "2011-07-01T16:59:30",
"content": "I’m a little confused about something though, how does having people develop their own applications for your product reduce sails? Or is this a return on investment thing?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412185",
"author": "mad_max",
"timestamp": "2011-07-01T17:12:11",
"content": "xorpunk is right. I know ONE person that owns one of those pens, and he’s a comp sci major; he just bought it because he thought it was cool. I’m friends with a lot of journalism majors (the target demographic, I would think) and none of them own one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412191",
"author": "teabaggs",
"timestamp": "2011-07-01T17:19:30",
"content": "So here my philosophy then:take down the forums. kill the SDK. concentrate on “cloud access, storage and services” and create a livescribe marketplace, similar to app store or android market. reopen forums and SDK. make some money on developer fees and % of sales from marketplace same as the aforementioned dev communities.One problem with the livescribe is that there is no place for ads on the device unless it injects some ad in the digital copy of your work or something like that.The other problem with livescribe is that IMO it will die anyway because while it is incredibly neat technology, it exits in niche market. And i suspect the market for a digital pen will continue shrinking as the market for tablets and handhelds grows.I guess we’ll wait and see how livescribe fairs. In any case, I’m sure we’ll see someone posting a homebrew sdk in less than a month. If we do I think that bodes well for the company since it means there is enough interest in development to warrant it which means that there is a market for the software. They just need to figure out how to be the ones in charge of it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412219",
"author": "Aaron",
"timestamp": "2011-07-01T18:49:57",
"content": "teabaggs: Sure, if they want to kill it and everything it might do for their product. The reason you release an SDK is because you want people who buy your product to give other people *more* reasons to buy your product.You don’t do it out of the goodness of your heart, or out of ideological commitment to open source or to some vague notion of “community”. You do it because you know people are going to look at your product in a store, say “huh that’s neat but what would I do with it?”, and keep on walking. That’s what happens when you invent a completely new form of user interface in this day and age, and in the absence of a pre-existing niche for it, the best you can do is hope it takes off so well among geeks and hackers that they’ll write a bunch of software for it which will then give those “but what would I do with it?” people an answer that’ll convince them to buy the damn thing.If that’s what you need out of your hobbyist community, the *last* thing you want to do is try to exert tight control over them, to “be in charge”, because there’s few better ways to drive off the very people you need to make your product worth the purchase.Speaking of said community, the more I think about it, the less sympathy I’m finding I have with them. It’s like with Minidiscs; all you need to do is look for a minute at the company behind the technology and you can see perfectly well it’s doomed — in Sony’s case because they’ve been chasing that “world’s only media format” lightning for thirty years and haven’t caught it since, and in Lightscribe’s case because there just isn’t a wide market for a big blobby pen that doesn’t fit in your pocket well and doesn’t seem on the face of it to do a whole lot other than transcribe your notes for you. I certainly can understand the appeal of technology that’s neat for its own sake, but if you’re going to get really serious about something, it’d well behoove you first to consider the chance of it still being around in five years.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412250",
"author": "xorpunk",
"timestamp": "2011-07-01T20:25:52",
"content": "@Hungry_Myst: You know a way to manufacture material assets without money for materials and operations? Please do tell :)You could save the product with your wisdom xD**This is almost as thick as people who think putting digital copies of a software(piracy) on a free market(warez scene) doesn’t affect the vendors who made it..Go run a software company, or any type of company and see how long you last when the product you invested time and money in is distributed free..Money off support and loyal users? riiiggghhtt..lets see it oh wise one",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412311",
"author": "Jiang",
"timestamp": "2011-07-02T00:46:56",
"content": "ORLY? They also need to work on Linux support.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412367",
"author": "Drone",
"timestamp": "2011-07-02T07:17:11",
"content": "Ahhh… More idiocy spawned by the evil and greed of the American MBA. Then again, there’s a good chance there’s a Trial Lawyer behind this. Pick your poison…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412373",
"author": "nes",
"timestamp": "2011-07-02T08:48:58",
"content": "Interesting device. I had not really noticed them before but a local store has them on special offer at the moment so I am tempted to pick one up.Reading the bitter comments on here, running a good forum and dev programme requires lots of dev and moderator time not just the hosting fees. If the company is on the edge, shutting it down would be a quick way to be able to loose some headcount. (Had direct experience of that one.)@xorpunk: regarding Warez, it only really matters if your customers don’t care about being licensed, in which case they probably don’t have the money to spend anyway. Case in point Microsoft’s major products have always been available this way and up until about WinXP sp2, they did almost nothing at all to mitigate it. You can’t seriously suggest this strategy has hurt them at all?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412411",
"author": "xorpunk",
"timestamp": "2011-07-02T12:38:07",
"content": "@nes: Case in point: your point is flawed..MS software is OEM software and has been since the 80s..I’m a senior level software engineer at a major studio, if we just make a little over the investment we literally can’t afford to do another project.The same applies to *any* business, if you think I’m off on this feel free to prove me wrong by managing a business that doesn’t tank under your logistics..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412424",
"author": "twopartepoxy",
"timestamp": "2011-07-02T13:43:14",
"content": "i don’t have a livescribe, i don’t know anybody who has one, but its quite an interesting bit of tech to be fair. looks very expensive for what it is though, and you have to keep buying the special paper. i can’t see anybody buying one for well over £100. i don’t see how it can compete with the age-old tradition of writing on bits of paper (and remembering anything important!). if i needed to really digitise writing, i’d get a cheap tablet for about £20. livescribe is a solution for a problem that didn’t exist.I agree with some of the commenters here who can’t see how removing any SDK will actually sell more hardware units, and I imagine thats what’s killing their company at the moment.Perhaps they are re-gearing some of the underlying tech to use in another product and want to shut off any IP leak. These companies move on, if something isn’t making money, get rid of it and use what you can elsewhere (and good luck to them!).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412510",
"author": "nes",
"timestamp": "2011-07-02T19:42:37",
"content": "@xorpunk: guess we have to agree to disagree in that case.Like I say it probably depends very much on your target demographic. If your business is business software (as mine is), then the sort of customers you want just aren’t daft enough to risk doing business on ripped off software (unless they are located somewhere the authorities turn a blind eye). Everything I’ve worked on until now has turned up cracked as a torrent or on usenet. We’ve been going since 1981 and are still healthy.On the other hand, if you’re developing games, say, then it probably matters a great deal more.If you’re developing a digital pen, I’m not sure how this would affect you at all.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412561",
"author": "Spork",
"timestamp": "2011-07-02T23:43:59",
"content": "@nesYou make quite valid points. Being around software a lot and writing a fair bit, I very much agree that it depends on your end product.Take Adobe for example – Everything of theirs is pirated and available online; However, I know the last two companies I have worked for have purchased at least $30,000 in software from them. Buying up Macromedia makes me think that they’re not hurting too badly from piracy either.Now lets take the android platform as a whole. The users have a free SDK and can create/publish (free) software that others can install without any piracy. This value-adds to the platform and the developer doesn’t have to pay for that service. Yet android still survives — because it still solves the problem of creating your own device-specific OS. [twopartepoxy] nailed it when he said livescribe solved a problem that didn’t exist, the other companies mentioned all do an exceptional job of solving problems that did exist.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412706",
"author": "xorpunk",
"timestamp": "2011-07-03T14:12:39",
"content": "In some dimension I’m sure free distribution of a software that costs millions to develop ‘doesn’t hurt’..unfortunately in the real world, if you’re not an OEM licensee, or OEM licensee+Owner of the worlds leading raster graphics software, that logic will have you on the fast track to sleeping under a bridge..***feel free to go and prove me wrong ^^***",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413478",
"author": "Matt",
"timestamp": "2011-07-05T20:02:38",
"content": "Just for the record. I do have a livescribe. Several of my friends and past co-workers have livescribes. They were invaluable for professional services consulting teams. A single team member could record notes / meetings and post them back to the client wiki so that any future on site consultant could refer to notes via OCR’ed searchable text / date of recordings / or even voice . Also hand sketched diagrams and the sort would also be available. I mean… it was and is an incredibly useful tool in some areas of business. the biggest issue with them is that you can’t stop them from recording audio and that means you need everyone to know you ARE recording audio when it’s on.That being said… I’ve seen several of the major hacks for these pens. One of the areas the pens saw heavy use … was as a peripheral for blind people. A keyboard can be a daunting instrument for a blind person… but a pen that can provide voice feedback is not. Not to mention it could be used to literally sketch new interfaces.The loss of the SDK for this pen is going to hurt a lot of people who simply aren’t target market for livescribe. They are just people benefiting from the technology existing. Without free/opensource maintainers many projects literally cannot exist.But aside from that lamentable woe, the reality is the way in which livescribe completely pulled an about face without any notice to developers on their product is utterly galling. It is a betrayal of the trust of people who had invested time, money, and expertise in their product. And as a company their image is now permanently tarnished. This will impact them.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "427575",
"author": "fuggetaboudit",
"timestamp": "2011-08-02T23:17:30",
"content": "I just bought one. They’ve been out for about four years, but I just got one a couple of weeks ago and I LOVE IT! (Engineer/inventor) Only to find out the paper isn’t available in B&M much anymore, only online. Amazon’s doing a great business selling these things. Livescribe+Evernote is a wonder to behold. Some things, like sketches and math problems are simply not easy to do on a computer…yes, I’ve owned MathCad since the 80s and it is still easier to work on paper. Livescribe is simply the best tool in the world when it comes to capturing interviews and listening to voice mail (record from speakerphone while jotting notes). Niche maybe, but lots and lots of stuff is still captured with pen and paper. Try leaving a note on someone’s door with a tablet/pda. My last speeding ticket was on paper too. The only thing that makes Livescribe a niche is poor marketing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "463788",
"author": "viroos",
"timestamp": "2011-09-25T11:06:52",
"content": "Hi,Did anyone make backup of SDK and doc? I was googling a lot and didn’t find it :(",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "477932",
"author": "jamie",
"timestamp": "2011-10-12T01:06:26",
"content": "I have version 1.4 – but the license precludes me from redistributing it. If someone can get LiveScribe to release me (us) from the license restrictions, I’m happy to make it available.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "538934",
"author": "Markus Hecher",
"timestamp": "2011-12-19T00:53:46",
"content": "Could you share it?",
"parent_id": "477932",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "497622",
"author": "zac",
"timestamp": "2011-11-02T13:07:28",
"content": "Hi, i really need sdk. Can anyone provide this? Cannot find anywhere. Contact me: tempmail -at- trashmail.net",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "528910",
"author": "predator",
"timestamp": "2011-12-07T17:39:23",
"content": "Hi guys . I desperately looked for that SDK with no luck . I would really appreciate if somebody could send it . predator1003 at gmail dot com",
"parent_id": "497622",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "538933",
"author": "Markus Hecher",
"timestamp": "2011-12-19T00:53:19",
"content": "Can someone upload the sdk to rapidshare or some other file hoster? please",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "549242",
"author": "Chris C",
"timestamp": "2012-01-02T13:58:25",
"content": "Did anybody started a new development forum on the Livescribe pen? Did anybody backed up the posts on the old forum before they deleted it?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "580691",
"author": "W.",
"timestamp": "2012-02-11T14:25:28",
"content": "Chris C – mail me, please.wykrywek@wp.pl",
"parent_id": "549242",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "555535",
"author": "Tom M",
"timestamp": "2012-01-11T01:16:20",
"content": "The comments here are so sadly uninformed- yet righteous! Like the other Livescribe owners posting here- I also fell in love with the thing and its potential immediately. The pen completely and painlessly transforms my historically useless jumping scribble during lectures, meetings, interviews, voicemail (great suggestion, above) into a completely automatic graphic map of the original sound stream. Suddenly, my shorthand WORKS- a tap on some mystery symbol of forgotten importance can now replay exactly what I was hearing when I wrote it- and I can also skip back to find out why I needed to draw the mark. I can finally pay attention to audio CONTENT rather than forcing myself to speed illegible attempts to capture everything- at the COST of the content of interest. The market for the pen is EVERYONE who gets tired of writing too much and then remembering too little. (Audio recording is also very easy to stop and start- it is NOT obligatory, as posted incorrectly above.) The desktop software uploads the ink images in a timeline, and maintains an index of page identities automatically. It can output an audio-annotated animated PDF ‘penlet’ that progressively tints the writing to show the timeline of notes during the audio recording. You can hear what went with a written note, you can see what a sound led you to write. It is amazingly helpful. and the ‘special paper’ is a red herring- it’s decent paper priced comparably to other archival journals.The SDK promised the ability to develop printable forms with programmable fields for buttons, OCR, outputs on the pen’s display and so on. With the SDK is was possible (for example) to develop physical data collection pages of forms (inked signatures will be required for some things, forever) that are automatically available as digitized facsimilies- with accompanying time-stamped audio logs.The dev program could not have been a substantial drain on Livescribe, and some costs were recovered as developers populated the app store at livescribe (that one poster sagely advised Livescribe should have developed). Those devs who posted products to the store supposedly get some shared remuneration. My suspicion is that there is- as suggested- some patent skeleton in a trial lawyer’s closet that generated a cease-and-desist. It’s a complete shame they stunted the dev program and shorted all who invested time aiming to post apps in the store. I am sure the company will suffer from the loss of independent development.My end user experience has convinced me that developing portable, disposable, printable data input devices based on the undying need to jot notes (how many do you find in pockets each night?) does turn out to have a very interesting future- but now many fewer minds have the opportunity to explore it. Opportunities lost, for what cost?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "615459",
"author": "Inanias",
"timestamp": "2012-03-29T17:36:43",
"content": "I use the smartpen for several yers now and I really like it.Now, 2 years later, I just realized that you can program it on your own and this was a point which made me really happy and I was either looking for the SDK when I landed here.I let the developers know, that even if they wont support their product anymore, its still good to publish the sdk as the community is a powerful might that can turn lost projects into success storys.Its still good to Give the people the possibility to improve your products!And even if its forbidden to share the SDK, I cant image, that the license either forbids to still use it for ptivate causes only, which I really would like to do.Is there really no way to get it?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "661394",
"author": "Goraek",
"timestamp": "2012-05-28T08:00:14",
"content": "so….Has anything happened with regard to a developer forum being hosted somewhere?Has the SDK been seen in the wild?(the team I’m with has looked VERY thoroughly for it with no success)any news? anyone?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "842565",
"author": "Space",
"timestamp": "2012-10-29T06:40:39",
"content": "I’ve been doodling with this thing for a while now.I tired looking around for a un-official forum but wasnt able to find one.I have the resources and space to put one up if there isn’t yet. I def see a use for one.Am I simply not seeing the forum? Or shall I take that first step?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "2443529",
"author": "truls",
"timestamp": "2015-02-18T07:26:32",
"content": "please share the sdk @ trulspedersen*hotmail.com if anny stil got a copy would be very pleased as im trying to set up the opensouce butterfly net (penpaper)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "2443538",
"author": "truls",
"timestamp": "2015-02-18T07:38:02",
"content": "(trulsjmpedersen@hotmail.com)",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,150.143955
|
||
https://hackaday.com/2011/07/01/electro-active-polymers/
|
Electro-active Polymers
|
Mike Szczys
|
[
"chemistry hacks"
] |
[
"acrylic",
"eap",
"electro-active polymers",
"muscle"
] |
What’s that you say? You’ve got rigid materials that change their shape when exposed to electric current? Sign us up for some! Although the fabrication process looks a bit daunting, we love the results of
working with electro-active polymers
. These are sheets of plastic that can flex by contracting in one direction when the juice is turned on. It has an effect very similar to muscle wire but distributed over a larger area.
From what we saw in the video after the break it looks like this is not the most resilient of materials. Several of the test shots have broken panes, but we’re sure that will improve with time. It looks like there is
some info out there about fabricating your own EAP
but the processes seem no easier than what’s going on at the research level. We might stick to
building our own air muscles
until EAP is easier to source for projects.
[youtube=http://www.youtube.com/watch?v=4XGVMXCxBNA&w=470]
[Thanks Kristoph]
| 22
| 20
|
[
{
"comment_id": "412138",
"author": "Roman Dulgarov",
"timestamp": "2011-07-01T14:19:30",
"content": "If made as a bunch of strips it may work as “muscle” fabric … not sure what the strength and power requirements are though… but looks very interesting one application I can see is possibly to alight solar cells to the sun for best extraction…you would use the provided energy to keep the alignment but again not knowing how much it takes its hard to tell if added efficiency is worth it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412140",
"author": "kabadisha",
"timestamp": "2011-07-01T14:24:18",
"content": "That’s awesome.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412157",
"author": "alex shenkin",
"timestamp": "2011-07-01T15:51:15",
"content": "good for energy-harvesting from a flag flapping in the wind? would obviate the need for complicated windmill setups (surely for smaller power requirements).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412182",
"author": "Icarus",
"timestamp": "2011-07-01T17:11:23",
"content": "well I guess that for the moment since it’s hand made with “fragile” materials it won’t likely be able to lift anything but I’m more interested in how fast can it move…dragonflies-like drones anyone?hope this gets further studying",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412203",
"author": "MrX",
"timestamp": "2011-07-01T17:53:30",
"content": "That’s a good concept but this implementation look fragile and doesn’t look like the material is going to last long..And did I read well?? 4000 V? This discard pretty much every application I thought off..",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "2581871",
"author": "John",
"timestamp": "2015-05-26T04:00:33",
"content": "All you need is to transform the voltage…",
"parent_id": "412203",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "412212",
"author": "brad",
"timestamp": "2011-07-01T18:24:42",
"content": "@MrXI read it as 4.000 V…Hard to tell from the picture though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412220",
"author": "hpux735",
"timestamp": "2011-07-01T18:52:02",
"content": "Some places use a ‘.’ rather than a ‘,’ to mark thousands… It’s hard to say for sure what voltage there is. I assume if it was just 4 volts there wouldn’t be the need for 4 significant digits…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412224",
"author": "tiopepe",
"timestamp": "2011-07-01T18:58:47",
"content": "Is similar a bimetalic sistem?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412233",
"author": "Nardella",
"timestamp": "2011-07-01T19:28:21",
"content": "Materials science is awesome. Video was well put together as well.The end result has a very “organic” look about it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412248",
"author": "igor.rf",
"timestamp": "2011-07-01T20:04:15",
"content": "Bat-man is one step closer to the real world =p",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412258",
"author": "Chris",
"timestamp": "2011-07-01T20:45:06",
"content": "Yes, it really is 4kV.It’s basically a capacitor, where the electrostatic pressure between plates causes physical deformation in the insulator in a predictable direction.They can be stacked and run in parallel to move some very heavy loads. They have a good power to weight ratio. They can move incredibly fast. And since it’s a capacitor, stored charge can even be partially recycled.A few years back I spent some time trying to imagine how you could DIY robot muscles with these. You’d need three things:1) Flexible electrodes. I did figure out a possible simplification here. Conductive graphite-loaded grease is available and cheap. It conforms and clings. While it has a relatively high resistance, it’s not such a big issue at these high voltages, and should work well; assuming of course the next item is not degraded by it…2) Very thin, defect free sheets of silicone or some other elastomer. The thinner the sheet, the more responsive the actuator is at lower voltage. But the thinner it is, the higher the possibility of any defect (like an air bubble) leading to an arc-through. I have some experience solvent thinning common silicone, and figured it might be possible to create a sheet composed of multiple very thin layers; doing it this way prevents any defect from going all the way through. Essentially the same technique used by tesla coil builders in making high-voltage caps with multiple layers of polyethylene. But I never got around to testing this, because you also need…3) A high-voltage driver capable of charging or discharging the actuator to any DC voltage from zero to 2-4kV. Good luck with that. :) Even if you can build one to experiment with, building several to make a real project like a robot arm/hand would be quite expensive, bulky, and possibly unsafe.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412261",
"author": "Travis",
"timestamp": "2011-07-01T21:07:39",
"content": "They can also be used to make cool robots:http://www.hizook.com/blog/2009/12/28/electroactive-polymers-eap-artificial-muscles-epam-robot-applicationshttp://www.hizook.com/blog/2010/04/22/electroactive-polymer-eap-robot-blimp",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412275",
"author": "Khai",
"timestamp": "2011-07-01T22:26:03",
"content": "anyone else thinking Battlemechs……….?(oh if only. ok I know they’re impractical, walking targets… but.. )",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412281",
"author": "aztraph",
"timestamp": "2011-07-01T22:55:50",
"content": "Looks a little unstable, and i think i saw some melt or tear. lots of potential in that stuff.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412308",
"author": "Mattster",
"timestamp": "2011-07-02T00:31:11",
"content": "Thinking of wings that can change shape based on the airplane’s speed",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412462",
"author": "Ptr",
"timestamp": "2011-07-02T16:23:51",
"content": "Was I the only one who was thinking of the cape from batman begins, when reading the article?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412661",
"author": "dito",
"timestamp": "2011-07-03T08:59:46",
"content": "ohhh batcap!!!! who long do we have to wait.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412766",
"author": "Whatnot",
"timestamp": "2011-07-03T17:41:16",
"content": "Seems to me they could achieve the same by using tubes that are filled with pressurized air/gas.This does however confirm my theory that I need a team of 6 people to make my hacks for me, a team that has things like lasercutters :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413270",
"author": "Kristoph",
"timestamp": "2011-07-04T23:54:57",
"content": "Your welcome for the link guysMissus stumbled upon it and showed me and I knew the perfect people to send it to",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "888117",
"author": "Rabia",
"timestamp": "2012-11-21T11:22:10",
"content": "Where can i buy these?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "3435054",
"author": "William DeGroot",
"timestamp": "2017-03-06T19:35:55",
"content": "I’m working on it.",
"parent_id": "888117",
"depth": 2,
"replies": []
}
]
}
] | 1,760,377,150.02493
|
||
https://hackaday.com/2011/07/01/cnc-pdbu-pancake-batter-dispenser-unit/
|
CNC-PBDU (pancake Batter Dispenser Unit)
|
Mike Szczys
|
[
"cnc hacks"
] |
[
"cnc",
"flapjacks",
"griddle",
"lego",
"nxt",
"pancakes"
] |
Flapjacks taste infinitely better when they’re machine-made. Well, that’s true for [Mexican Viking] who
built an automatic pancake maker
to the delight of his family.
Obviously, the building material of choice is Lego. The machine consists of a base with two linear gears on either side. A gantry is held high above this base, travelling upon geared towers to either side. The writing nozzle, fashioned out of ketchup bottles, can move back and forth along this gantry for a full range of motion along the X and Y axes. Lego pneumatic pumps supply pressurized air which forces the batter out of the bottle reservoir. This dispensing system is extremely clever and worth reading a bit more about. But if you just want us to make with the good stuff, you can see it grilling up pancakes in the video after the break.
The only thing missing is
automatic flipping
.
[youtube=http://www.youtube.com/watch?v=2aux0ZQJVBk&w=470]
[Thanks Hackadayisgreat via
Gizmodo
]
| 11
| 11
|
[
{
"comment_id": "412129",
"author": "Mad Flapper",
"timestamp": "2011-07-01T13:45:18",
"content": "Flippin’ Great !",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412132",
"author": "mbtronics",
"timestamp": "2011-07-01T13:47:55",
"content": "Is that not PBDU then?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412139",
"author": "twopartepoxy",
"timestamp": "2011-07-01T14:22:17",
"content": "nice, wish i had one of these when i was a kid!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412145",
"author": "Destate",
"timestamp": "2011-07-01T14:55:42",
"content": "Ha, looks like you switched B and D in the title",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412156",
"author": "Vampyredh",
"timestamp": "2011-07-01T15:40:33",
"content": "Wish I had one now lol. Cooking is my true passion above all others and that would be a great toy for my kitchen.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412159",
"author": "IdiotMan",
"timestamp": "2011-07-01T15:57:54",
"content": "Need a dispenser here!Oh boy, this is so cool and unnecessary. I want one. Sort of.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412230",
"author": "Amos",
"timestamp": "2011-07-01T19:11:12",
"content": "Clever, far from perfect, made “because I can”… Yep, that’s a hack :DBesides the auto-flipper, it needs:* A tank or two to store pressure and a valve to control it, so it can dispense (and begin dispensing) more quickly* A valve on the ketchup bottle to prevent drips* A second bottle with a larger nozzle for “flood filling”* An automatic batter mixer that can load the “feeder” bottle(s)I still prefer the automatic waffle maker featured a few months ago, though, simply because I prefer waffles to pancakes :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412280",
"author": "aztraph",
"timestamp": "2011-07-01T22:50:38",
"content": "now watch, Disney will come in and yank the video because, damn, those ears sure do look familiar. great build. i bet flipping those is a bitch.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412364",
"author": "Migpics",
"timestamp": "2011-07-02T07:04:02",
"content": "@AmosThanks so much for the tips! I’m hoping to improve upon it so your suggestions mean a lot.Miguel",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412442",
"author": "Tim",
"timestamp": "2011-07-02T15:08:09",
"content": "Some hacks just make you smile, this is one of them. It’s also an awesome way to get the next generations of hackers engaged. Great hack.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "474602",
"author": "yesyes",
"timestamp": "2011-10-07T15:53:02",
"content": "You could reverse pressure to prevent the dripping. A bit of under-pressure should suck those drops back into the bottle.Amazing project though. Love it !!! :D",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,150.074402
|
||
https://hackaday.com/2011/07/01/importing-pcb-layout-into-google-sketchup/
|
Importing PCB Layout Into Google Sketchup
|
Mike Szczys
|
[
"Tool Hacks"
] |
[
"cad",
"design",
"google",
"idf",
"pcb",
"sketchup"
] |
If you’ve been spending hours with the digital calipers while designing enclosures for your circuit boards there may be a better way. [Phil] tipped us off about a new software package that will let you
import PCB layout files into Google Sketchup
. This way you can start working on the enclosure in CAD before you’ve populated your first board. Of course this adds to the pain of realizing there’s an error in your layout, but what are you going to do?
The free software was developed by RS Components, a European component distributor. It takes IDF files, which can be exported from most PCB design software, and converts them to a format compatible with Sketchup, Google’s 3D design software. For those who enjoy a very dry demonstration video you won’t want to skip seeing what we’ve embedded after the jump.
We’re kind of surprised that this hasn’t already been done. If it has, leave a link in the comments.
[youtube=http://www.youtube.com/watch?v=ACNCB69-G9E&w=470]
| 16
| 16
|
[
{
"comment_id": "412120",
"author": "steaky",
"timestamp": "2011-07-01T12:35:14",
"content": "We have to export our PCB’s as a DXF file, then import into ProE.Bit of a pain though",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412126",
"author": "pinky",
"timestamp": "2011-07-01T13:30:00",
"content": "Why would you ever use Google Sketchup?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412136",
"author": "elektrophreak",
"timestamp": "2011-07-01T14:15:38",
"content": "well, to design chairs and stuff :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412158",
"author": "Robot",
"timestamp": "2011-07-01T15:55:38",
"content": "This is enough to make me take a second look at Sketchup. However, I would welcome any suggestions for a free or less than 100 USD alternative 3D modeling software. (I wish I could afford a seat of SoldWorks, I love that program.)– RObot",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412167",
"author": "improprietary",
"timestamp": "2011-07-01T16:27:35",
"content": "Robot, i sent a mail to Dassault Systémes SolidWorks Corp (the new tongue twister corp) about them making solidworks available on a per month basis like photoshop. No reply yet.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412186",
"author": "NsN",
"timestamp": "2011-07-01T17:12:19",
"content": "If you are just looking for pretty pictures of your PCB i have to plug Eagle3D. It uses poray to render, but it can still be helpfull to spot hard to reach buttons, or bad connectors.http://www.matwei.de/doku.php?id=en:eagle3d:eagle3dSome more current examples:http://www.mikrocontroller.net/topic/114555#2035124http://www.mikrocontroller.net/topic/184662#1974569(Text it in german, but look how shiny!)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412231",
"author": "Nardella",
"timestamp": "2011-07-01T19:22:36",
"content": "@pinkyWhy wouldn’t one use sketchup?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412264",
"author": "Ian Lake",
"timestamp": "2011-07-01T21:22:05",
"content": "Don’t dis Sketchup before you’ve tried it! We started messing around with it a few years ago, and now we do all our detailed product design in it (having built a library of all our parts). Seetrax Designer XL PCB exports 3D DXF, stright into Sketchup & into the job. We use SU for design, build info and publicity shots. See the results onhttp://www.trtest.com.Not perfect, but great value for money.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412272",
"author": "itsmike",
"timestamp": "2011-07-01T22:15:24",
"content": "My employer has been doing this for some time. We’re a half Altium / half Autodesk Inventor design shop, so we take Altium PCB models, use Altium’s built-in Export as STEP tool, and import into Inventor. Works like a charm. Plus both Altium Designer and Autodesk Inventor are infinitely scriptable, so you can add all manner of pre- and post-processing to your designs.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412306",
"author": "Dax",
"timestamp": "2011-07-02T00:24:13",
"content": "Just export a jpeg of the board layout, import it to sketchup and extrude shapes over the components that are most likely to get in the way.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412307",
"author": "Dax",
"timestamp": "2011-07-02T00:31:10",
"content": "@NardellaPrecisely. It is actually a very powerful tool.For instance, if you make a rough representation of a bolt, you can then make it a component, then copy it ad infinitum to represent the bolt that you’re going to use in your machine.Then you can take one of those copies, and refine the shape to better represent the real bolt you’re going to use, and it changes all of them.It’s a 3D sketching up tool. I just drew a CNC machine with it by drawing one linear bearing mechanism, first as a rough sketch, then aligned three copies up for the assembly, then refined the sketch to better represent the actual parts I’m going to use, and I didn’t have to redraw the entire model just because one bolthead was actually two millimeters narrower than I thought it would be.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412310",
"author": "Dax",
"timestamp": "2011-07-02T00:46:09",
"content": "http://koti.mbnet.fi/jeti/kone5.jpghttp://koti.mbnet.fi/jeti/kone6.jpgHere’s the concept drawing made in Google Sketchup. The point is that you could make that without any machining tools beyond a drill and a drill press stand, and the parts should cost you less than a hundred euros if you’re lucky.Though there are some problems with the design. The gap between the runners is too shallow for the edge of the L strip to run in so it slips off if you put any force on it, so I’ll have to widen the gap between the rollerskate bearings and turn the L strip into a wedge between the gap somehow. I’m trying to figure out how to turn a piece of plastic into a wheel with a groove, that sits around the bearings.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412323",
"author": "Mike M",
"timestamp": "2011-07-02T02:00:25",
"content": "Wow, I needed to do this recently because my office is 3000 miles away from the guys with solidworks seats, so every time I wanted to check my work, I had to send it over to them and have them import into SW and send me jpgs back. I had started a sketchup plugin to import these files simply so I could see the IDF output. It’s not hard and wondered why no one did it before. This will help greatly when verifying the parts before I send it to the mechanical guys.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412687",
"author": "Elias",
"timestamp": "2011-07-03T12:25:13",
"content": "Great post! I actually started the other way around just the other day, by first making a rough shape of how the design would look in Sketchup before designing it in Eagle. Going back and forth would be a great added benefit. I do see a couple of problems though.. As far as I know, Eagle does not allow you to specify the “height” of a component, so this would have to be done in Sketchup after the import. This has to be possible with DesignSpark PCB since they already have a 3D viewer built into the software. Also, it is an .exe file, not very useful to us OS X developers. Hopefully someone skills can make an Eagle to Collada ULP : )",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413214",
"author": "Whatnot",
"timestamp": "2011-07-04T19:53:32",
"content": "@Dax I think you also need more support for the drill, just holding it at the neck with a thin L shape does not seem smart and sold and stable, it will twist and vibrate and ruin the results I expect.Also you need to think about where the powercord and such is going to go, it needs something to guide and hold it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "470817",
"author": "Ryan",
"timestamp": "2011-10-03T19:16:17",
"content": "Absolutely need more support for the drill – but great idea nonetheless. We actually design and build PCBs so this was a pretty interesting article.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,150.31048
|
||
https://hackaday.com/2011/07/01/external-text-display-for-nexus-one/
|
External Text Display For Nexus One
|
Noah Dunker
|
[
"Android Hacks",
"Arduino Hacks",
"Cellphone Hacks",
"Microcontrollers"
] |
[
"android",
"arduino",
"cellphone",
"lcd",
"microcontroller",
"usb"
] |
[follower] prototyped a
2-line external display for his Nexus One
using an Arduino with a USB Host Shield, and the Android Open Accessory Protocol. There are two basic software pieces at work: an Arduino sketch that handles displaying data sent from the phone, and a lightweight android app to detect the presence of the external screen and send data to it. As shown here, it diplays the time and the beginning of the most recently received SMS message.
This project coalesced from several other things [follower] had been working on with regards to USB accessories, background services, interfacing with the Arduino and handling SMS messages, so it’s modular and open-source. If you’re interested in mashing up microcontroller projects and your android phone, there’s plenty of stuff in this project to help you get off the ground.
As hacks go, this is very much a “because you can” sort of deal that’s designed to tie a bunch of cool things together. You’re unlikely to catch us carrying an LCD and breadboard around in our pockets any time soon, but it paves the way for some potentially fun phone accessories.
| 4
| 4
|
[
{
"comment_id": "412105",
"author": "BacklitVillain",
"timestamp": "2011-07-01T11:22:04",
"content": "Nice. Could be good to veiw sms/email/notifications etc without having to remove you phone from you pocket, via a watch or something, perfect for in a meeting or out jogging.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412124",
"author": "sidthetaff",
"timestamp": "2011-07-01T13:11:20",
"content": "I’m pretty sure you can already get watches that do exactly that. I believe sony ericsson did it a couple of years ago, working via blutooth. Whilst as the article says this is a because you can hack, i can’t see any use for this commercially.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412171",
"author": "Nathan",
"timestamp": "2011-07-01T16:43:48",
"content": "I’ve got the sony ericsson watch … two lines and vibration via bluetooth, bidirectional communications and everything you’d expect.It took me 6 months to acquire one, the knockoff on thinkgeek didn’t live up to my standards.google searching for mbw-150 xda androidwill get you some nice imagery",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412249",
"author": "doubleup",
"timestamp": "2011-07-01T20:24:20",
"content": "This, in a nutshell, is what I don’t like seeing arduinos used for. Just my personal opinion. But while it was easy to make, it is now useless for practical purposes until it is entirely re-designed. Many microcontrollers can do this job in a much smaller package than an arduino shield, but it’s a whole new project.Arduinos are great, but this is just impractical. Still, good for fun.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,150.434294
|
||
https://hackaday.com/2011/06/30/new-conductive-ink-allows-circuit-prototyping-with-a-pen-and-paper/
|
New Conductive Ink Allows Circuit Prototyping With A Pen And Paper
|
Mike Nathan
|
[
"News"
] |
[
"circuits",
"conductive",
"ink",
"paper",
"pen"
] |
Why spend time etching circuit boards and applying solder masks when all you really need is
a rollerball pen and some paper?
That’s what University of Illinois professors [Jennifer Lewis and Jennifer Bernhard] were asking when they set off to research the possibility of putting conductive ink into a standard rollerball pen.
The product of their research is a silver nanoparticle-based ink that remains liquid while inside a pen, but dries on contact once it is applied to a porous surface such as paper. Once dry, the ink can be used to conduct electricity just like a copper trace on a circuit board, making on the fly circuit building a breeze.
Previous ink-based circuit construction was typically done using inkjet printers or airbrushing, so removing the extra hardware from the process is a huge step forward. The team even has some news for those people that think the writable ink won’t hold up in the long run. The ink is surprisingly quite resilient to physical manipulation, and they found that it took folding the paper substrate several thousand times before their ink pathways started to fail.
While we know this is no substitute for a nicely etched board, it would be pretty cool to prototype a simple circuit just by drawing out the connections on a piece of paper – we can’t wait to see this come to market.
| 42
| 39
|
[
{
"comment_id": "411918",
"author": "KP",
"timestamp": "2011-06-30T23:14:58",
"content": "That’s pretty neat, but how am I going to solder to paper?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "411921",
"author": "Spork",
"timestamp": "2011-06-30T23:19:35",
"content": "“we can’t wait to see this come to market.”Took the words out of my mouth. This would be amazing and I really hope it goes far.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "411923",
"author": "sp00nix",
"timestamp": "2011-06-30T23:24:37",
"content": "Athlon XP/Duron over clocking got a bit easier.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "411924",
"author": "APE",
"timestamp": "2011-06-30T23:24:37",
"content": "Never seen conductive ink before. Ever. Nope.Oh wait I have. Being able to use a rollerball is a bit new though.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "581911",
"author": "BrainSlugs83",
"timestamp": "2012-02-13T23:01:13",
"content": "Really? I’m pretty sure you can buy these pens off the shelf at radio shack. I have a couple. They let through enough current to light an LED, but not enough to run a small DC motor…",
"parent_id": "411924",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "411925",
"author": "Sariel",
"timestamp": "2011-06-30T23:24:48",
"content": "SWEET! GO UI! one question — where can i buy one now?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "411927",
"author": "patman2700",
"timestamp": "2011-06-30T23:29:38",
"content": "I’ll take five cases. When can you ship?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "411928",
"author": "Alex Parting",
"timestamp": "2011-06-30T23:38:59",
"content": "sounds good but how would you solder or build the circuit?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "411929",
"author": "Spork",
"timestamp": "2011-06-30T23:41:22",
"content": "The last paragraph in the journal article says that they designed it for low-cost. Hopefully that means a fairly low consumer cost, because making ink from pure silver is going to be $$$ as is.I’d say they won’t be available commercially for at least a year still, BUT they’re fairly easy to make yourself if you have a centrifuge and some chemicals laying around (PPA, Silver, diethanolamine, water, and hydroxyethyl cellulose).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "411930",
"author": "Pilotgeek",
"timestamp": "2011-06-30T23:43:59",
"content": "http://www.radioshack.com/product/index.jsp?productId=3964901",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "581912",
"author": "BrainSlugs83",
"timestamp": "2012-02-13T23:02:40",
"content": "Exactly, I have a few of these at home.",
"parent_id": "411930",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "411931",
"author": "Boudico",
"timestamp": "2011-06-30T23:45:50",
"content": "I’ll order this!@Alex: Conductive superglue, of course",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "411933",
"author": "jj52",
"timestamp": "2011-06-30T23:48:14",
"content": "but not on papaer",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "411938",
"author": "Spork",
"timestamp": "2011-07-01T00:04:33",
"content": "@Pilotgeek,While still cool, that only writes on hard surfaces, which makes me think it’s not a roller ball pen, but a felt-tip or paint pen. This loses the novelty of ink that won’t dry in a pen, but will dry on paper (that pen is presumably sealed more than a roller ball) and it’s not flexible (due to acrylic binder)@Alex and BoudicoWhy not regular glue of any kind, then just a blob of this touching the side?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "411942",
"author": "Pix3l the B1t",
"timestamp": "2011-07-01T00:12:14",
"content": "This technology has been around for years… A graphite pencil! (not really :p)I can’t wait to see this on shelves, although it will probably cost an arm and a leg (and your firstborn son)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "411949",
"author": "M4CGYV3R",
"timestamp": "2011-07-01T00:29:46",
"content": "Haven’t you been able to buy conductive ink markers for about a decade at least? I seem to remember having seen these out there forever. Is it just a different type of conductive ink?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "411950",
"author": "M4CGYV3R",
"timestamp": "2011-07-01T00:30:44",
"content": "Yep.http://www.blockemf.com/catalog/product_info.php?cPath=763&products_id=5103",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "411958",
"author": "Dan",
"timestamp": "2011-07-01T01:00:24",
"content": "Origami paper and muscle wire!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "411962",
"author": "Marco",
"timestamp": "2011-07-01T01:07:54",
"content": "I’d be more interested in inkjet cartridges than yet another silver pen.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "411973",
"author": "GuiltyPixel",
"timestamp": "2011-07-01T02:22:12",
"content": "I agree with Marco, inkjet traces would be more useful. Something conspicuously missing from this article is how the components are mounted to the paper and what makes them maintain solid electrical contact with the traces… Sure the traces are reliable but what keeps your SMD LEDs from popping off and getting lost in the carpet?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "411993",
"author": "Steve-O-Rama",
"timestamp": "2011-07-01T03:42:07",
"content": "Few things make me giggle like a school girl. I’m happy to say that news of a cheap conductive-ink ballpoint pen is one of them.It’d be great if they added a (light) adhesive to this stuff, so the SMD parts don’t go flying away when I sneeze. :) Make it tacky until it’s dry, with alcohol(s) as a carrier/solvent. Giggity.There’s the solution, GuiltyPixel. And if they DON’T include it, I’m sure a dab of cyanoacrylate (superglue) would help keep them in place.Wonder what would happen if you draw with this pen, right on your skin. Could I then stick LEDs and a uC onto myself, and would they then work as programmed? LOL Oh the potential for hilarity and Halloween costumes!Still reading through the details, so please don’t flog me too hard if my questions are answered therein.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "581917",
"author": "BrainSlugs83",
"timestamp": "2012-02-13T23:05:29",
"content": "Neat idea! You could make your skin a multi-touch cap-sense surface.",
"parent_id": "411993",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "411995",
"author": "Associate",
"timestamp": "2011-07-01T03:42:54",
"content": "Radioshack has had this in stock, well a marker variation, for nearly two months.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412018",
"author": "MattQ",
"timestamp": "2011-07-01T04:33:15",
"content": "oh man, something to replace copper tape for repairing delaminated traces? Awesome. I didn’t realize that similar stuff currently exists, until earlier posters brought it to my attention. I know what my office is going to be ordering a case of. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412048",
"author": "peter",
"timestamp": "2011-07-01T06:09:45",
"content": "this is a very poor summary. conductive ink pens have been around for a very long time (i’ve heard folks say around 20 years, as this article has been making the rounds). there is one beside me.circuit prototyping has NOT traditionally been done with inkjet printers, and *that* is a new process only recently developed, and for which relatively few conductive inks exist. there has been a lot of research into using silver nanoparticles because of their relatively low resistance, and for their ease of jetting if you pair them with an appropriate carrier. there are a bunch of companies that currently do this, but their conductive ink is very expensive.using a large-tipped pen with conductive ink is /not/ meant as a replacement for rapidly prototyping or printing circuits with an inkjet process. inkjet allows extremely fine traces to be constructed — or even entire multilayer boards — and is in no way going to be replaced by the use of a giant pen and someones hand.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412049",
"author": "Jack",
"timestamp": "2011-07-01T06:13:57",
"content": "haha can’t believe people are comparing this so the shitty conductive pens you can buy at radioshack. if you had ANY idea what you were talking about, you’d know that pen is a worthless sack a shit, so quit whining about this “being done already”, it hasn’t been done correctly at all.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412054",
"author": "twopartepoxy",
"timestamp": "2011-07-01T06:33:31",
"content": "I’m confused. Can anybody tell me how this stuff is better (if at all) than the existing commercially available conductive inks?? Sorry for the scepticism, but I suspect that its another case of a research paper getting accepted because it has the word ‘nano’ in the title.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412094",
"author": "Joe beams",
"timestamp": "2011-07-01T10:23:34",
"content": "I think conductive hot glue would be cool and much more useful if you could print it and the. Just heat and place your parts…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412114",
"author": "Nemo",
"timestamp": "2011-07-01T11:47:12",
"content": "@twopartepoxy & others – This is about being able to use conductive ink with a ball-point pen. Yes, conductive ink has been done for years, but this stands out because it is the right consistency to be used in a ball-point pen without clogging it or drying out.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412116",
"author": "fartface",
"timestamp": "2011-07-01T12:10:59",
"content": "Glad they invented something I have been using for 40 years…Wow they are getting dumb researchers nowdays…And OOOH boy, ballpoint, yeah that has advantages over other methods… NOT. Ballpoints fail more times than marker types on different surfaces. Maybe I want to draw my duino circuit on a glossy magazine page!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412119",
"author": "Rajarshi",
"timestamp": "2011-07-01T12:34:54",
"content": "This is a really good idea! I was wondering if anyone has idea how we would get around the problem of burning the paper when trying to solder?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412128",
"author": "Roman Dulgarov",
"timestamp": "2011-07-01T13:44:54",
"content": "Conductive pencils … no one remembers using leaded pencil for this?? resistance is higher but still.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412137",
"author": "KanchoBlindside",
"timestamp": "2011-07-01T14:19:28",
"content": "@Roman; we used to overclock our AMD XP-1800/2000 CPUs with pencils!@Pilotgeek beat me to it lol.@Jack, hmm, I have one right here. I can meg it to 1000v and it writes on anything. As thin as I can draw it, a 12″ line on 20-weight copier paper is still 0.19 ohms.Not bad for my $13 at Radio Shack. I bet this rollerball pen is $50+ if it ever makes it to market.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412141",
"author": "teabaggs",
"timestamp": "2011-07-01T14:25:30",
"content": "I saw a similar product on the shelf at the local Radio Shack. it was not a roller ball, rather one of those felt tipped ‘paint’ pens. It worked pretty well on a frisbee I was adding some LED to. On paper it sucked up a lot of the ink. Would recommend a gloss or matte finish of some kind so its not so porous. I think the roller ball will give better precision and use less ink. already I’m thinking to create an adapter to drop it in to a plotter and print some paper circuits.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412155",
"author": "Hubert",
"timestamp": "2011-07-01T15:31:27",
"content": "I use a conductive pencil a long time. These penshttp://www.reichelt.de/bilder/web/xxl/X200/CW2200.jpgare sold here for ~38 Euro, nothing new there. You can also buy the conductve ink (Leitsilber in german) without pen much cheaper. for examle KEMO Leitsiber 3gramms 8Euro.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412172",
"author": "Colecoman1982",
"timestamp": "2011-07-01T16:45:30",
"content": "“resistance is higher”Yea, it’s not like the resistance of the conductors is something important in circuit design or anything…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412173",
"author": "Colecoman1982",
"timestamp": "2011-07-01T16:48:26",
"content": "Hell, I’m gonna start using iron for hooking up all my circuits from now on. It’s a lot cheaper than copper. I’ll just increase the amperage and voltage to overcome the increase resistance. Hey Roman, got any good sources for discreet components that work at 50+VDC?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412575",
"author": "bothersaidpooh",
"timestamp": "2011-07-03T00:19:58",
"content": "Nice, again the expense is likely to be high much like Wire Glue.Its essentially the same as the silver in those car demister repair kits, at least as far as it behaves.I have had some success making my own using an ultrasonic cleaner and silver gilding foil.It seems that according to the nice folks on 4HV you can improve on my discovery by using an ultrasonic fog generator (£12 from maplins) or just the element with a suitable driver- the higher frequency “chops up” the silver into smaller fragments.Not tried yet but should work…If anyone gets this to work please donate to keep us running, thanks so much.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412992",
"author": "Trollicus",
"timestamp": "2011-07-04T03:28:33",
"content": "All electronics has a conductive pen for $18.95http://www.allelectronics.com/make-a-store/item/CW-100P/CIRCUITWRITER-TM-CONDUCTIVE-SILVER-COATING/1.htmlI have used this and wire glue to make breakout boards for surface mount chips.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414647",
"author": "nave.notnilc",
"timestamp": "2011-07-08T13:09:51",
"content": "In the paper they glued the LEDs to the paper and then globbed on some more of their ink to the contacts. No solder involved.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "553698",
"author": "sanie",
"timestamp": "2012-01-08T03:39:34",
"content": "HiI did try to make this ink as they shown in video. I spent $8000 to brig all these chemicals and equipments, After 3 experiments i get only 5ml ink. But that ink never goes from pen. Than i inkjet it on paper with big needle siring. So I saw up liar is non conductive when i scratch it than i found very pure silver liar on paper that was conductive, So I am telling you they are hiding things (some other chemicals) or some method so no body can get accurate result and also its really very expenses experiment.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "582111",
"author": "Z",
"timestamp": "2012-02-14T07:34:26",
"content": "Lol ^",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,150.39262
|
||
https://hackaday.com/2011/06/30/androcade-is-a-controller-and-stand-in-one/
|
Androcade Is A Controller And Stand In One
|
Mike Szczys
|
[
"Android Hacks"
] |
[
"arduino",
"bluetooth",
"gaming",
"mame",
"retro",
"stand"
] |
We remember when retro-gaming required a lot of equipment and a serious time commitment to put together a gaming interface. [Scooter2084] proves that we’ve come a long way with this
gaming controller built to complement Android hardware
.
It’s not immediately obvious from the image above, but the controller itself looks just like Andy the Android. His head is tilted upward and acts as the tablet stand, while his torso hosts the controls. We don’t the arms and legs have a functional use but they are necessary to complete the look.
Traditionally arcade controls have used a hacked gamepad, or dedicated hardware like the
MAME cabinets that use iPac control boards
. But this rendition interfaces the joystick and four buttons using an Arduino. A Bluetooth shield lets you control the Android device wirelessly, and opens up the possibility to use this as a controller for laptop-based emulators and the like. Don’t miss the video after the break.
[youtube=http://www.youtube.com/watch?v=4nhah_YujOM&w=470]
| 8
| 8
|
[
{
"comment_id": "411914",
"author": "patman2700",
"timestamp": "2011-06-30T22:53:51",
"content": "“We don’t the arms and legs have a functional use…”I don’t want to sound too critical, but it seems as if editors aren’t even reading over their own articles before posting them.Errors aside, looks really clean. Only thing I’d do differently is raise the eye-level so Andy’s eyes were just barely peeping over the phone.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "411984",
"author": "Boricua",
"timestamp": "2011-07-01T03:18:17",
"content": "Great holds a tablet or a cellphone",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412001",
"author": "matt",
"timestamp": "2011-07-01T04:01:17",
"content": "all I want is a usb controller that my evo snaps into, like a gameboy adapter",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412019",
"author": "Stevie",
"timestamp": "2011-07-01T04:34:30",
"content": "Simple(ish) but a very clever idea. I like it :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412027",
"author": "fr4nk",
"timestamp": "2011-07-01T05:01:13",
"content": "Andy the Android?I thought he was called Lloyd…Anyway, nice work!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412051",
"author": "ewookie",
"timestamp": "2011-07-01T06:20:32",
"content": "andy likes to watch while you play with his joystick :O",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412112",
"author": "brad",
"timestamp": "2011-07-01T11:42:43",
"content": "“We don’t [think] the arms and legs have a functional use…”We don’t [think] you edit your posts.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412115",
"author": "Strider_mt2k",
"timestamp": "2011-07-01T12:05:07",
"content": "That is a pretty cool hack.I only recently discovered the Wiimote Control app for using a Wiimote as a controller with my Android tablet, so something like this seems great as well!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,150.482671
|
||
https://hackaday.com/2011/06/30/driving-and-old-receipt-printer/
|
Driving And Old Receipt Printer
|
Mike Szczys
|
[
"Arduino Hacks"
] |
[
"parallel",
"receipt printer"
] |
It seems like receipt printers are pretty popular as hacking targets lately. Aside from the wasted paper, they cooler than plain old blinking LEDs and we’d image there’s a ton of them floating around out there as advances in technology have prompted retailers to trade in the bulky dinosaurs for slimmer thermal printers. [Philip Hayton] picked up this Epson model at some type of equipment sale and set to work
figuring out how to control it
.
This unit is addressed via a parallel interface. After assessing the pinout and searching a bit for protocol information [Philip] hooked up his Arduino and printed out a fitting first message that reads: “Hello World”. He’s got a few tricks you can learn from when trying to talk to hardware with which you are not well acquainted.
Need a reason to go out and find your own receipt printer? Check out this
paper-based gaming system
for some inspiration. Now develop your own paper recycling setup and we can file this one under ‘
green hacks
‘.
[Thanks Andy]
| 18
| 18
|
[
{
"comment_id": "411888",
"author": "that1guy",
"timestamp": "2011-06-30T21:15:25",
"content": "Driving and old receipt printer what?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "411889",
"author": "Noodle",
"timestamp": "2011-06-30T21:15:37",
"content": "Corrections:In the title, “driving an old”.“they cooler than plain old blinking LEDs and we’d image there’s a ton of them floating around out there”, *they’re, *imagineGreat spellchecking.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "411891",
"author": "lbozz4",
"timestamp": "2011-06-30T21:16:26",
"content": "“Driving and old receipt printer”*an",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "411894",
"author": "truthspew",
"timestamp": "2011-06-30T21:40:21",
"content": "If you can find em’, Eltron label and receipt printers are for the most part all serially driven and you can still find the docs for em’.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "411895",
"author": "xeracy",
"timestamp": "2011-06-30T21:40:24",
"content": "Judge not a man by the quality of his grammar, but by the contents of his articles…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "411896",
"author": "Hans",
"timestamp": "2011-06-30T21:40:25",
"content": "Where’s the hack? He has just implemented Centronics, hooray. Nothing new here, not even an attempt to reverse the printer control language, just simple ASCII.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "411900",
"author": "Jax184",
"timestamp": "2011-06-30T22:02:30",
"content": "Reminds me of one I got from a hat store. Took a bit of fiddling to figure out, but it eventually worked. I couldn’t think of a use for it at the end though, beyond stuff likehttp://www.jax184.com/pictures/P1100557s.JPG",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "411912",
"author": "patman2700",
"timestamp": "2011-06-30T22:48:48",
"content": "Corrections v2“and we’d image there’s a ton of them”ThereISa ton of them?“and we’d imagine there are a ton of them”I’m surprised Noodle didn’t catch that one.Listen, HAD, if you’d like a volunteer assistant editor, I would love to help.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "411916",
"author": "rd",
"timestamp": "2011-06-30T23:08:33",
"content": "they’re still in use in a many libraries and make me want to tinker when i encounter one that is printing highRes which takes about twice as long as the lowRes mode which is all you need for a receipt.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "411922",
"author": "zigzagjoe",
"timestamp": "2011-06-30T23:24:35",
"content": "Yeah, this is just a *little* weak. Both in the article and the post on this site.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "411939",
"author": "Dave",
"timestamp": "2011-07-01T00:08:22",
"content": "Don’t care if it’s a brief overview… I’m inspired to pull a few of these off the shelf and play. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "411956",
"author": "M4CGYV3R",
"timestamp": "2011-07-01T00:45:00",
"content": "Nice. I have a Citizen iDP-3535 here that I could do some fun stuff with.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412111",
"author": "blue carbuncle",
"timestamp": "2011-07-01T11:37:48",
"content": "Someone gave Jamarius an OLPC without a phonics monkey. Gonna guess that there are spelling/syntax errors in the code too lol.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412133",
"author": "Colecoman1982",
"timestamp": "2011-07-01T14:01:39",
"content": "Heh, I don’t usually complain about the occasional typo in posts but this one reminded me of reading a spam e-mail selling v1@gr@…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412376",
"author": "Soundwavehi",
"timestamp": "2011-07-02T09:21:01",
"content": "Do you folks need a proof reader? Not trolling, I just need a job… Plus I form coherent scribblings quite well.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412379",
"author": "Soundwavehi",
"timestamp": "2011-07-02T09:31:55",
"content": "So as not to totally burn Mike, I understand everyone has a different grasp of English. Lots of my friends happen to write the same as they speak. Plus English is complicated as hell for my friends from Denmark. Kinda like those family guy characters that almost pass for American…I do enjoy seeing people repurposing old tech, I love that this will undoubtably trigger a wave of receipt printer hacks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412613",
"author": "uzerzero",
"timestamp": "2011-07-03T02:39:16",
"content": "I used that exact model of receipt printer for years when I used to work as a circulation specialist at my school’s library. Working in a library is, oddly enough, very boring, so I discovered lots of interesting features.As one commenter mentioned, you can print in low and hi-res modes. The drivers that we used (for XP) also enable it to be used as a printer in any program that supports it, so you could print fairly decent images and text. It was also capable of printing in portrait or landscape mode, although I can’t remember the max character width. My favorite feature was its ability to auto-cut the paper when it was done printing. All in all, a great little printer. I might have to pick one up whenever they decide to upgrade their systems.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "2211104",
"author": "Loz",
"timestamp": "2014-12-04T21:45:14",
"content": "I am trying to use one of the HC-05 Serial Bluetooth jobbies to connect to ,my Epson TM88iii receipt printer. At the moment I am using it connected to my PC via a null modem serial cable but i want to convert my whole till system to android. currently I am using VBA and chr$ to control the printer but the problem i’m having is deciding which of the 4 useable connections i should use. TX and RX obvious CTS and RTS i can tap off the board but what about DSR and DTR ??",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,150.541683
|
||
https://hackaday.com/2011/06/30/tweeting-home-alarm-system/
|
Tweeting Home Alarm System
|
Mike Nathan
|
[
"Arduino Hacks",
"Security Hacks"
] |
[
"alarm",
"arduino",
"security",
"twitter"
] |
Instructables user [willnue] wanted to build a DIY Tweeting alarm system from the ground up, but reconsidered after taking a close look at the scope of such a project. He settled on using an off the shelf security system,
taking care of the Twitter interface on his own
. He bought a GE 45142 Wireless alarm and promptly disassembled it to see how he might retrieve status messages from the unit.
He figured that monitoring the alarm’s LEDs would make the most sense, so he used a bit of Ethernet cable and wired all of the system’s indicators to his Arduino board. He hooked up an Ethernet shield to the Arduino, then wrapped the pair up in a plastic project box that closely matched the look of the security system. Once that was done, he wrote some simple code for the Arduino that monitors each of the alarm system’s six status lights, sending updates to Twitter via the ThingTweet service.
With this system you might not get your status messages in time to foil whoever is carrying off your plasma TV, but at least you will know what to expect once you get home!
If you want to keep tabs on [Will’s] security system to
find out the best time to rob him
see how things are going,
check out his Twitter feed here
.
| 9
| 9
|
[
{
"comment_id": "411873",
"author": "tony",
"timestamp": "2011-06-30T20:26:59",
"content": "I would love to see how to rig a up atracphone… i need to do somehting like this myself… howeverwe dont have any kind of telco/dsl/cable",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "411897",
"author": "Snark",
"timestamp": "2011-06-30T21:53:56",
"content": "It’s ThingTweet, not TweetThing :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "411901",
"author": "steve",
"timestamp": "2011-06-30T22:03:13",
"content": "Actually, this seems rather simple, but I think it’s ingenious! If you are away and your neighbors see that your broken in they can check. Kind of a real world application of a virtual network. Nice.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "411955",
"author": "ben",
"timestamp": "2011-07-01T00:38:04",
"content": "ur house is being robbed lol",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412022",
"author": "willnue",
"timestamp": "2011-07-01T04:56:23",
"content": "It is pretty simple, but sometimes that’s all you need! Also, don’t just think about it in terms of a security system. If you don’t set the alarm the sensors still inform the base station of their status so you can use the sensors for anything ie. add a door/window sensor to your mailbox, point a motion detector at you door for deliveries, dog door, bird house etc…Tony, Instead of a track phone you could substitute the Ethernet shield with a Cellular shield and have it send SMS text messages instead of tweets.Thanks for posting my project HAD!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412039",
"author": "Lol",
"timestamp": "2011-07-01T05:30:11",
"content": "Mah. First thing most clever thieves do is cutting telephone and ethernet wires. So if you alarm system fail this won’t help either.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "416480",
"author": "Jimm",
"timestamp": "2011-07-12T08:10:25",
"content": "I think it is too much trouble to create something not foolproof.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "432497",
"author": "Scot Johnson",
"timestamp": "2011-08-11T15:24:33",
"content": "So, if you were to recommend a vendor for what you’ve described above, who would you go with? (given that we’re talking about companies inside the continental USA)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "435694",
"author": "willnue",
"timestamp": "2011-08-16T03:58:40",
"content": "If you check out the Intstructable the first page includes links to all of the places to buy the parts and they are all in the USA.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,150.588908
|
||
https://hackaday.com/2011/07/03/sandbox-game-in-a-sandbox/
|
Sandbox Game In A Sandbox
|
Brian Benchoff
|
[
"Kinect hacks",
"Toy Hacks"
] |
[
"Kinect",
"sandbox game"
] |
The team at Monobanda have been working on a sandbox game called
Mimicry
that uses a Kinect to read the terrain of a sandbox.
From the
teaser video
and press release, the eventual goal appears to be controlling both a character in the game and the environment simultaneously. By reading the terrain of the sandbox with a Kinect, the team was able to import that into the game world. The team says the game world is inhabited by tiny virtual characters that, “roll around, jump and glide through the Mimicry world.” Anyone playing Mimicry can create obstacles for these little creatures or build them a race track. The Monobandia team says the point of this game is, “to create your own games.” With a fully editable world and its ‘rolling ball’ inhabitants, we can’t wait to make our own custom
Beyblade arena
.
Since the
release of the Kinect SDK
a few weeks ago, we’ve been seeing some
really amazing projects
that should have been day-1 demos from Microsoft. We’ve been impressed with the projects we’ve seen so far, and can’t wait to see what others come up with next. If you have a neat build, be sure to send it into the
tip line
.
Check out a video testing the game mechanics after the break.
[vimeo
http://www.vimeo.com/25665948%5D
| 21
| 21
|
[
{
"comment_id": "412824",
"author": "Volectorus",
"timestamp": "2011-07-03T19:36:36",
"content": "This would be Awsome for a motocross game.http://vimeo.com/25666910(additional vid)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412854",
"author": "GuyPaterson",
"timestamp": "2011-07-03T20:40:09",
"content": "If you cross platform this and make the integration real-time… Perhaps on a public server for FPS. Could you get it to recognise drawings on a sheet of paper or the colors of certain objects to recognize for an out-of-bounds area… Like a brightly colored string.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412864",
"author": "Jack",
"timestamp": "2011-07-03T21:07:47",
"content": "I like it.But one of the reasons I play sandbox video games is because it’s easier(and cleaner) than actually playing with a playbox full of sand.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412869",
"author": "GuyPaterson",
"timestamp": "2011-07-03T21:17:31",
"content": "This the sand-box is just for terrain editing and whatnot. Fit this on a server and you have seamless terrain integration! if you could do it with paper and different color markers, you could have the makings of an awesome FPS that changes every time you play it! I for one, am VERY excited about this tech.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412871",
"author": "jeicrash",
"timestamp": "2011-07-03T21:18:35",
"content": "This reminds me of the movie “The minds Eye” for some reason. This would be an awsome tool for schools.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412879",
"author": "CRJEEA",
"timestamp": "2011-07-03T21:49:24",
"content": "I would love to see someone map out an area using kinect and save it as a game environment. So you could have races or war games in your own nabourhood.Like having satnav that pulls data from google street view(ahead of time in all directions so that there is no lag time whilst driving) then over lay road data like street names and the line of the route.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412887",
"author": "kade",
"timestamp": "2011-07-03T22:20:08",
"content": "I smell a new scorched search terrain builder",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412897",
"author": "Hackerspacer",
"timestamp": "2011-07-03T22:56:07",
"content": "Might be better if it was a claybox game instead of sand. Sand falls – clay sorta stays in place.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412898",
"author": "Hackerspacer",
"timestamp": "2011-07-03T22:57:20",
"content": "This needs to have Dungeons and Dragons support added, stat.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412899",
"author": "Hackerspacer",
"timestamp": "2011-07-03T22:58:52",
"content": "It also needs a method of detecting the players. Right now it incorrectly thinks they are part of the (very tall!) terrain.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412941",
"author": "mrmm314",
"timestamp": "2011-07-04T00:37:59",
"content": "@Hackerspacer: Moonsand would be perfect for this.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412950",
"author": "Adrian",
"timestamp": "2011-07-04T01:03:08",
"content": "One of my colleagues and I actually did a similar project for a Micromachines style racing game, we have a video on youtube here:http://www.youtube.com/watch?v=S7qbjGNyi88",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412954",
"author": "uzerzero",
"timestamp": "2011-07-04T01:23:23",
"content": "It’d be interesting to see this integrated with objects as well, i.e. you could place blocks, toy cars, baddies, etc. and the software would render it while the character ran in a straight line.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412978",
"author": "Brianmanden",
"timestamp": "2011-07-04T02:31:29",
"content": "Great base for a tower defence game. Control towers with augmented reality badges.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412993",
"author": "Phil Burgess",
"timestamp": "2011-07-04T03:29:00",
"content": "My cat would flip out if I installed something like this on her litter box.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413115",
"author": "mog13",
"timestamp": "2011-07-04T12:04:45",
"content": "haha would make an interesting new map maker for something like AOE",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413120",
"author": "László Monda",
"timestamp": "2011-07-04T12:13:02",
"content": "Lemmings in Mimicry for the win!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413197",
"author": "Anon",
"timestamp": "2011-07-04T18:48:37",
"content": "One word: Populous",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413307",
"author": "C",
"timestamp": "2011-07-05T04:36:15",
"content": "This would be a cool way to make maps for tux racer.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413392",
"author": "Glen",
"timestamp": "2011-07-05T12:47:15",
"content": "An exhibit at Makerfaire UK in Newcastle earlier this year had something similar. A sandbox with small “insect” creatures video projected down into it from aboveby carving out the terrain you could make path for the video insects to follow or build up terrain to block them",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "415546",
"author": "corruptor",
"timestamp": "2011-07-10T11:32:33",
"content": "Sure this would be cool for games, but in a totally different area, this could be groundbreaking in robotics.One major challenge that robots have is things like distinguising between a shadow and a hole – which this seems to handle quite well. I see a lot of potential here.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,150.723336
|
||
https://hackaday.com/2011/07/03/a-simple-dolly-for-time-lapse-photography/
|
A Simple Dolly For Time-Lapse Photography
|
Jeremy Cook
|
[
"digital cameras hacks"
] |
[
"canon powershot",
"chdk",
"stepper"
] |
[Henrique] wrote in to tell us about his time-lapse
photography hack
. Triggering of the camera is done via
CHDK
, or Canon Hack Development kit. This experimental kit allows Canon Powershot cameras to run scripts as well as other neat features without permanently changing anything. User scripts for
this hack
and others can be found here.
Once the Camera was set up to take pictures in a predetermined amount of time, a LDR (light dependent resistor) is used to detect when a picture is actually taken. A LED on the camera flashes every time an image is stored in the camera, so this provided an easy way to sense when this happens.
Once this signal is received, a PIC 16f84 processor and the associated circuitry then causes the stepper to step once per shot. The results of this experiment are very impressive, so be sure to check out the results after the break.
[vimeo
http://www.vimeo.com/25623454
w=470&h=225]
For another interesting camera trigger hack, check out this
trigger mechanism
made from an air freshener!
| 22
| 22
|
[
{
"comment_id": "412709",
"author": "saturnnights",
"timestamp": "2011-07-03T14:20:56",
"content": "canon, not cannon.http://en.wikipedia.org/wiki/Canon_%28company%29",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412720",
"author": "ic",
"timestamp": "2011-07-03T14:43:38",
"content": "Is there a page that details the build of this project? I’m very interested in learning how this is built so I can make my own. I only see the video of the demo shot.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412745",
"author": "luckycharms",
"timestamp": "2011-07-03T16:52:33",
"content": "I’d love to see the build of the track itself, servo specs, etc. I’d love to be able to make a curved one for use in my tropical forest sites! (think BBC’s Planet Earth shots of the corticeps mushrooms consuming insects – so cool.) Also, that looks like a pretty big servo! I wonder if there might be a smaller, more efficient one to use.Finally, thinking about taking this out into the forest, I wonder about tying a rock to a string and using that for the force to impel the camera along the track? That way, instead of a servo, perhaps you’d only need a little mechanical switch or something that would let a gear tick by a tooth or two each shot. Dunno, but just thinking about making it as low-power as possible.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412746",
"author": "Mojoe",
"timestamp": "2011-07-03T16:53:43",
"content": "Servos don’t step, stepper motors step.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412761",
"author": "Jeremy Cook",
"timestamp": "2011-07-03T17:30:00",
"content": "@Mojoe and saturnnights – right, corrected!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412767",
"author": "Henrique",
"timestamp": "2011-07-03T17:42:57",
"content": "@luckycharmsThis step motor it’s a 15kgf.cm using 1/5 gear reduction. Yes, it’s too much torque for what he is doing but was the one that I had at the time.I’m concerned on the power saving too and using this motor wont help saving any. The motor drive will drop the current after 10 seconds from last step and that’s too much so I was thinking on making a motor drive with discrete components and using worm drive for reduction (I can turn off the motor and the reduction will hold the position)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412768",
"author": "Mojoe",
"timestamp": "2011-07-03T17:43:21",
"content": "It’s still tagged with servo. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412771",
"author": "Henrique",
"timestamp": "2011-07-03T17:52:38",
"content": "later I will post about the specs and some thoughts for next step =)maybe we can work on some ideas to make a better dolly",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412777",
"author": "ChalkBored",
"timestamp": "2011-07-03T18:08:30",
"content": "@luckycharmsIf you can find a clock movement with enough torque to move the camera around, you could use that in place of the stepper motor.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412827",
"author": "biozz",
"timestamp": "2011-07-03T19:43:36",
"content": "where do you get these rails?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412921",
"author": "Microguy",
"timestamp": "2011-07-03T23:22:23",
"content": "@biozz I found some “C” rails at Home Depot. They’re made of steel, but my friend has some made out of aluminum. It’s basically a long sheet, but bent into a square “C” shape on the short length (so you get a long “tube”, but bent into a “C” shape. But the edges are rolled, this is perfect for putting a little steel wheel in (think “Pulley Wheel”). You can make a little trolley out of that pretty easy. Either using one rail, or two. (I know, it’ll make sense when you see it)Plus it has all the hardware for connecting this rail together, “T” shapes, “L” shapes etc…Don’t know where to get the aluminum rails though.Check out the area in HD that contains conduit etc… You may have to look for it. But I think it comes in 10 foot sections, so look for something long, standing on end probably. That’s what I saw, but it may be laying down flat too.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412922",
"author": "Microguy",
"timestamp": "2011-07-03T23:30:24",
"content": "But I fail to see the point of the dolly in the first place. Why move it after taking a photo?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412960",
"author": "Henrique",
"timestamp": "2011-07-04T01:39:06",
"content": "@Microguyhttp://en.wikipedia.org/wiki/Time-lapse#Time-lapse_camera_movement@biozzsearch for “aluminum extrusion” (the shape is close to “X”)and you can use liquid acrylic to make the linear guide-apply petroleum jelly to make the aluminum extrusion slippery and drop the liquid acrylic inside (I did use balsa with the aluminum profile to make the mold)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413035",
"author": "milo",
"timestamp": "2011-07-04T06:11:18",
"content": "The aluminum extrusion is called “T-slot” or “80-20”. You can buy it on amazon and on mcmaster’s website.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413036",
"author": "loans",
"timestamp": "2011-07-04T06:14:44",
"content": "@microguyI agree, at least as far as the demo video embedded in the post is concerned. With candles as the subject, you might as well pan it after the time-lapse is taken…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413069",
"author": "Mad Max",
"timestamp": "2011-07-04T08:42:11",
"content": "I’m with Microguy and loans on this one (even after reading the wikipedia article, yes). I guess “impressive” is a subjective notion after all.Though I have to admit, a circular track around a blooming flower in time lapse might provide a rather interesting anti-bullet-time (granted, you could just turn the flowerpot, but if there is a non-neutral background, it would make a difference)…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413122",
"author": "Dnny",
"timestamp": "2011-07-04T12:31:08",
"content": "There is even simpler open source timelapse dolly here:http://dynamicperception.com/Also check out the community site for Open-source Photographic Motion Control technologyhttp://openmoco.org/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413133",
"author": "supertreeX43",
"timestamp": "2011-07-04T13:14:38",
"content": "I think those pics could have looked alot more blended and dynamic if you took the exposure time right up to like 1/2",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413152",
"author": "Drone",
"timestamp": "2011-07-04T15:17:36",
"content": "Good luck getting a Canon camera that can use the CHDK firmware. By the time CHDK becomes useful on a particular Canon model, Canon removes it from the market (intentionally?)I challenge all HaD hackers to get on the band-wagon for completing the CHDK hack for the amazing Canon SX30is super-zoom camera. Yes you can still buy the SX30is, and CHDK for this camera is still in beta, but close.The SX30is is at the sweet-spot in super-zoom lens cameras. Much more affordable than any level of DSLR as you don’t get trapped into having to buy a bunch of costly lenses (marketing trap). CHDK gives you DSLR control (and more) on the SX30is camera.By design, CHDK does NOT modify the native firmware on the camera. It “intercepts” the bootloader and loads new options from the memory card. You are typically safe running CHDK on your memory card.No, I’m not affiliated with Canon in any way…Regards, David",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413186",
"author": "Olivier",
"timestamp": "2011-07-04T17:47:42",
"content": "@Drone: it would be stupid if Canon removed from the market their cameras just because of CHDK.I bought a Canon A480 just because of CHDK. And if in the future I need another camera, it’ll probably be a Canon if CHDK is still around.Anyway, I’ll never buy a sony camera (because of Lik-Sang close down, virus problems on audio CDs and all the things sony have against the hacking comunity).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413206",
"author": "loans",
"timestamp": "2011-07-04T19:18:03",
"content": "@Dronecalling SLR lenses a marketing trap is a new one. Especially considering the camera you write about costs nearly as much as an entry level DSLR kit, but locking you into optics. I’m not a fan of the ‘super-zoom’ point and shoots. They’re too big to be convenient to carry, and too slow to compete with an slr.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413333",
"author": "Cynyr",
"timestamp": "2011-07-05T06:29:12",
"content": "@loans,I agree, when you need a 1200mm lens, you need 1200mm lens and no amount of digital zooming will help you.Although the Canon SX30is $400, a nikon d3100 is $650 with an 18-55mm lens f3.5 lens.Also, It would seem that the canon does not have an adapter ring, so no filters or other attachments. There is also no ability to store images in RAW only JPEG.Overall the canon seems to be a high zoom, point and shoot, and not a replacement for an SLR film camera.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,150.656118
|
||
https://hackaday.com/2011/07/03/robotic-schadenfreude-quadrotor-blooper-reel/
|
Robotic Schadenfreude – Quadrotor Blooper Reel
|
Mike Nathan
|
[
"Robots Hacks"
] |
[
"fail",
"quadrocopter",
"quadrotor"
] |
While quadrotors might just become the killing machines of choice some time in the future, we’re pretty sure it will be awhile before they run amok and wipe humans off the face of the planet,
if the following video is any indication
.
The team over at UPenn’s GRASP Lab film everything they do when it comes to quadrotors for posterity’s sake. When your awesome job consists of directing quadrotors through all sorts of acrobatic hijinks however, mistakes are going to happen. Thankfully, the team doesn’t keep these a secret, and while we’re typically wowed by what these flying machines can do, it’s also pretty fun to see them fail in such spectacular fashion.
If you have a spare minute, kick back, fire up the video, and enjoy the mechanical mayhem that ensues. We certainly sleep better at night knowing that while these things are awesome, a well-placed hula hoop is all it takes to ensure continued human supremacy.
[youtube=http://www.youtube.com/watch?v=TVrxvqYlCDs&w=470]
| 29
| 29
|
[
{
"comment_id": "412698",
"author": "Colin",
"timestamp": "2011-07-03T13:11:12",
"content": "They may be bloopers, but some of that flying that they are attempting (e.g. putting a copter through a vertical slot or locating and flying through a hula hoop)is pretty damn impressive!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412700",
"author": "ANDY-MAN",
"timestamp": "2011-07-03T13:32:52",
"content": "Mass quadrotor suicide at 25 seconds! Is this humane what were making them do? It appears they just cant take it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412705",
"author": "clb92",
"timestamp": "2011-07-03T13:58:57",
"content": "These guys are doing a piece of work, experimenting with how we can use these technologies. These may be bloopers, but you learn from mistakes :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412713",
"author": "Andrew",
"timestamp": "2011-07-03T14:32:08",
"content": "I love the sound of angry quadrocopters. Bring on judgment day!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412727",
"author": "Bill",
"timestamp": "2011-07-03T15:33:18",
"content": "Funny, but not impressive.These guys are using a movie studio quality motion capture rig with near 100% position certainty and mm resolution. All processing is done off the copters. They may be getting really good at control systems and cooperative behavior, but there’s not much that can be applied to real world situations.Disclaimer: I work for a Naval research lab that specializes in vehicles with onboard autonomy and multi-vehicle cooperation in GPS denied or low position certainty environments. IE, the real world. This group’s videos get passed around the office every so often and get a few chuckles for research being done in a non-existent perfect world.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412728",
"author": "PJ Allen",
"timestamp": "2011-07-03T15:42:08",
"content": "I don’t know what the propellers are made of, but if that guy :32-:40 took one in the face it wouldn’t have been pretty.Q: Dueling scar, dude?A: No; twas quadcopter awesomeness.Net or no net, he ought to have had a face shield.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412732",
"author": "Fallingwater",
"timestamp": "2011-07-03T16:12:48",
"content": "I love it how at 0:25 one fails, then the others all freak out and tangle themselves in the web :P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412740",
"author": "Chris",
"timestamp": "2011-07-03T16:37:27",
"content": "@Bill: Let’s say you’re building an autonomous ‘copter, that works under real-world conditions, and of sufficient size to accommodate all processing on-board.In that case, although the location system cannot know the position of the ‘copter and surrounding objects with certainty, it would continually generate “best estimates” which would be passed to and considered as exact locations by other systems, including the control system.And the control system would still be much like what these researchers have developed to an uncommonly high degree of precision.So even though they’ve chosen to focus on a specific area while “cheating” on the others, I don’t agree that this has no real-world application. The control system alone is an essential part of any real-world app.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412778",
"author": "PHT3",
"timestamp": "2011-07-03T18:09:17",
"content": "Seems many readers here are unfamiliar withthe domain of high end RC helos. This sort ofstuff here is pathetic to watch !It’s taking steps backwards!“quadcopters” suck ! (and i’m an ATP with over10,000+ hrs flying everything from S-76C’s, to222’s, to Citation X’s).some ideas are meant to die, and quadcoptersare one of ’em !! (if it weren’t, Sikorsky orany of the other major airframe builders wouldbe building “real world” versions of them).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412781",
"author": "bdsmith",
"timestamp": "2011-07-03T18:14:37",
"content": "If one quadcopter can control its 4 rotors, then maybe a 4×4-copter can be made from 4 quadcopters, where each “meta-rotor” is a single quadcopter. And then a 4x4x4-copter where each meta-meta-rotor is a 4×4-copter. A scalable copter design based on fractals.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412818",
"author": "hackTheGibson",
"timestamp": "2011-07-03T19:22:15",
"content": "@BobDon’t they need to start somewhere? Develop something that works in a lab and then expand to real world? There are steps to these things. I don’t know if the Navy goes straight from concept to real world, but around here we test and test and then move on in small controlled increments.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412831",
"author": "Bill",
"timestamp": "2011-07-03T20:02:04",
"content": "@Chris,While it makes sense in theory, in practice systems designed from the ground up in a perfect world environment behave very poorly in the real world. I have seen many examples of this. Systems designed with the expectation of bad data do better in a real world environment.@hackTheGibsonI assume you mean Bill? No, we start in simulations that introduce errors on purpose to model real world problems, and then quickly move to real world tests asap.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412833",
"author": "intrader",
"timestamp": "2011-07-03T20:03:19",
"content": "Pretty impressive control systems and speed of algorithms",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412838",
"author": "Stevie",
"timestamp": "2011-07-03T20:19:00",
"content": "Personally I prefer the non-blooper videos that youtube offered up after this bloopers reel.I can see what Bob is getting at and he apparently has his Naval research to back up what he’s saying, but meh, I think it’s fine to start in a ‘perfect world’ environment and then later perfect/tweak/modify it for the harsher “real world”.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412940",
"author": "D_",
"timestamp": "2011-07-04T00:35:20",
"content": "LOL so many anonymous experts posting comments on the web. Just the opinion of an anonymous critic. As for no real world applications, haven’t people been saying that for ages? The first person to put a sharp rock on the end of stick was probably dismissed by someone. Not that I’m saying there aren’t real world application for these machines, just that I wouldn’t say there isn’t. Fun to watch though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413026",
"author": "henry",
"timestamp": "2011-07-04T05:11:34",
"content": "haters gonna hate.I wish they would tell us the number of takes to get it perfect.Also, i love this video series.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413055",
"author": "midnight",
"timestamp": "2011-07-04T07:38:05",
"content": "@Armytech guys…Not everything that flies is designed to kill and destroy.I can see many real world applications but I guess you were stuck in the army box too long.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413075",
"author": "pascal",
"timestamp": "2011-07-04T08:57:50",
"content": "@henry: well hopefully it worked all the time after that… it would be quite bad research if they took 20 takes to get it right.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413076",
"author": "Tachikoma",
"timestamp": "2011-07-04T09:09:28",
"content": "b… but does it cure cancer??????",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413094",
"author": "PHT3",
"timestamp": "2011-07-04T10:31:24",
"content": "It’s not “hating”.I’m sure many have seen the old black and whitefilm (title escapes me at the moment), “thosemagnificent men and their flying machines”.Where many aircraft designs were depicted. Someabsurdly ridiculous.You distill it down to basics, and a “quadcopter”is a solution looking for a problem. Heck, NASAused a version of it to train astronauts in the60’s for lunar landings (i believe the propulsionwere small rocket motors – on all 4 corners of aplatform designed to simulate the LEM).In all those decades, why do you think Sikorsky,Boeing, Northrop, etc – not exploited the conceptfor commercial gain ? Maybe because it just plainsucks!Not wanting to totally dismiss all ideas, perhapsit might have application as a heavy lift vehicleif it were to be scaled up. Sort of like the craftin “Space 1999” (4 corners w/lift devices).Or maybe a “Thunderbird 2”.Eh, not my money, more power to ’em.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413123",
"author": "Stephen",
"timestamp": "2011-07-04T12:41:45",
"content": "I like what Bill said about real world applications having to deal with bad data.also, did anyone know Schadenfreude is germnan fo the Joy of other Peoples misfortunes. Not to be confused with Scheidenfreude the Joy of pleasuring Vaginas.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413134",
"author": "horst",
"timestamp": "2011-07-04T13:41:21",
"content": "@PHT3so what do you propose instead of quadrocopters?And there are probably no “real world” quadrocopters because they have no advantage over normal helicopters there…The advantage of a quadrocopter is that it is much easyer to build in small scale.. the rotor is simply some blades fixed to a hub and no complicated linkage needed.So quadcopters are much cheaper to build and much easyer to repair than real helis of this size.If you scale everything up the handling advantages and the proven technology of the helis win but in small size other features count…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413137",
"author": "Miroslav",
"timestamp": "2011-07-04T13:59:38",
"content": "PHT3 probably proposes standard configuration, ie one large rotor and one smaller mounted sideways on tail. Tail rotor in that config. just eats power to prevent the heli. body to enter a spin. With quadrotor all the energy goes into lift… Just saying, I’m no expert like PHT3.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413138",
"author": "Volfram",
"timestamp": "2011-07-04T13:59:56",
"content": "In defense of the institute creating these videos, I’ve seen most of the “good” videos those takes are from, and even given the “perfect-world” scenereo the experiments are taking place in, they’re pretty impressive.The failures, on the other hand, are hilarious.Have to agree with the other people who said the guy inside the net needed a face shield. He looked visibly uncomfortable.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413219",
"author": "gcds",
"timestamp": "2011-07-04T20:17:18",
"content": "everything would be perfect if that quadrotor were independent because now they use pc and other sensors",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413346",
"author": "Ash",
"timestamp": "2011-07-05T07:23:26",
"content": "Anyone who has seen all the videos in this series should refrain from using the word ‘unimpressive’ as a descriptor. On a good day, these things are graceful and terrifying.While sensing is a problem today, the state of the art for sensors and mobile processors is advancing. Also, I’m sure that much of their software algorithm is highly parallel, and could be adapted nicely to some FPGA’s or ASICs.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413446",
"author": "Cubby",
"timestamp": "2011-07-05T17:59:37",
"content": "My first thought on the control issues may be in the phase alignment between the transmitting antenna and the receiving antenna as they cross over the vertical/horizontal alignment planes. There’s a null point, or a point where the phase angles cross over and the RF signal is all but eliminated (or at the least, greatly diminished), which may be causing a loss of control.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413711",
"author": "Alex",
"timestamp": "2011-07-06T14:12:16",
"content": "I love every video these guys have made. It’s like watching something out of science fiction. And Bill, yes we all know these aren’t done with on board processing and sensors. To me it’s still amazing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "419246",
"author": "austin",
"timestamp": "2011-07-18T19:51:50",
"content": "one advantage that quadrocopters have over helicopters is that it requires less powerful motors, with the downside of needing MORE of them and the subsequent downside of having more motors to maintain, as mentioned no need for a side motor for stability so all energy is put into lift.im guessing one of the biggest things that have held back large scale implementation is the mechanical mindset. why use 4 motors when you can use one and hook it up to a transmission to control speed for each rotor. or the idea of controlling the motors mechanically rather than digitally, and the use of gas and diesel vs electric (though it might be possible to do with 4 jet engines)i cant say that an electric engine is easier to control with a computer its very likely that is false but i dont know.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,150.792625
|
||
https://hackaday.com/2011/07/02/3d-display-using-a-kinect/
|
3D Display Using A Kinect
|
Brian Benchoff
|
[
"Kinect hacks"
] |
[] |
Youtube user [programming4fun] got a Kinect for father’s day and with just a little bit of code, came up with
a 3D display using only a Kinect
. Instead of the usual Kinect hacks like
computer vision
or
playing Mario
, we think the ‘Holographic display’ for the Kinect is one of the most useful implementations of the Kinect we’ve seen.
The build uses the Kinect SDK. The end result is a lot like the
Kinect snowglobe
we covered earlier, only instead of custom acrylic domes and a projector, this build enables pseudo-3D on any display. The hack works by having the Kinect track the users head. From that, it’s pretty simple to display a projection of a 3D model.
The system only supports a 3D display for one person, although with
shutter glasses
, that could be could be doubled. [programming4fun] says he’s thinking about adding anaglyph 3D – while the effect on video is pretty amazing, he says it’s not entirely convincing in real life.
We talked to the extremely modest [programming4fun], and he says the build isn’t technologically impressive at all. We’d disagree with that assessment because interfaces requiring movement have been around
since 1963
and they still haven’t caught on for a wide audience. While there have been a few motion controlled devices
that have worked well
, most of them
have been pretty bad
. The Kinect 3D display seems like it would have some utility with a Microsoft Surface type device.
[programming4fun] says if there’s enough interest he might be convinced to clean up his code and create an installer. Check out the video after the break.
UPDATE: [programming4fun] uploaded
another demo
with a “behind the scenes” look after this was published. Check it out.
[youtube=http://www.youtube.com/watch?v=YDHJEbTPs7o&w=470]
| 31
| 28
|
[
{
"comment_id": "412560",
"author": "fco",
"timestamp": "2011-07-02T23:39:02",
"content": "it’s great when people do fantastic things and their ego doesn’t fly up.Two thumbs up!One for the work, the other for his attitude.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412563",
"author": "mindbleach",
"timestamp": "2011-07-02T23:45:10",
"content": "I’m kind of surprised this wasn’t a day one project for Microsoft after Johnny Lee’s headtacking demos with a Wii remote and LED glasses. Seems like a neat (if occasionally silly) thing to slap on various first-person games.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412583",
"author": "sun god",
"timestamp": "2011-07-03T00:40:45",
"content": "Finally !! I’ve said it before, I Will not buy a Kinect until someone does exactly this. NOw instead of things popping out why not try making a window into another wOrLd. This is what I want a Kinect to do:http://hackaday.com/2010/04/16/virtual-windows-that-track-a-viewers-position/.Can you imagine having this as your screen saver, On your PC or Xbox.. Im in the Mile High but I want a Penthouse NewYork View today…Tomorrow I’ll have a window overlooking Tokyo’s skyline…..",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "412719",
"author": "Matt",
"timestamp": "2011-07-03T14:35:43",
"content": "HoW anNoyIng iS tHis?!?1/",
"parent_id": "412583",
"depth": 2,
"replies": []
},
{
"comment_id": "1014510",
"author": "Eternalgif",
"timestamp": "2013-06-10T01:18:52",
"content": "http://www.engadget.com/2012/07/10/winscape-virtual-window-makes-the-leap-to-kinect/",
"parent_id": "412583",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "412591",
"author": "Elias",
"timestamp": "2011-07-03T01:07:05",
"content": "Very nice hack!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412603",
"author": "Max",
"timestamp": "2011-07-03T01:56:18",
"content": "Made me go woah",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412619",
"author": "M4CGYV3R",
"timestamp": "2011-07-03T03:28:09",
"content": "Do want virtual ping-pong…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412623",
"author": "GryphoN",
"timestamp": "2011-07-03T04:00:10",
"content": "This looks like it would go along very well with a 3D glasses setup. As-is, this won’t provide a 3D depth as it’s still on a flat screen. But with 3D glasses, this looks like it would be able to provide a true 3D experience where you can peer around an object, something that typical 3D setups can’t do.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412624",
"author": "gonzotron",
"timestamp": "2011-07-03T04:19:45",
"content": "Next step should be to interact and (virtually)touch it with your hands using kinect.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412634",
"author": "Mike",
"timestamp": "2011-07-03T05:34:05",
"content": "@sun god and @programming4fun – want to start a project for this? We could make an opensource version of winscape!Let me know what you think.Mike",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412636",
"author": "Spork",
"timestamp": "2011-07-03T06:14:28",
"content": "Really cool. I’d like to see more of this, keep up the good work.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412643",
"author": "wardy",
"timestamp": "2011-07-03T06:47:40",
"content": "This is the second time I’ve seen this done, but this seems to be the better implementation. The only serious problem I can see is that it will only work for one person at a time because it can only track one set of eyes.But this still wouldn’t look 100% right in person anyway because the observer isn’t using stereoscopic vision to view the object. The answer to that is to keep one eye shut of course, then it would look normal, and would probably blend in with the background pretty well.Perhaps a more realistic model would enhance the effect further.You watch, in a year or so we’ll be seeing this on sale as a SolidWorks plug-in :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412644",
"author": "Joost",
"timestamp": "2011-07-03T07:04:38",
"content": "Great demo!Source code or an installer would be awesome!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412670",
"author": "jukus",
"timestamp": "2011-07-03T10:28:19",
"content": "Second that – Source Code would be very much appreciated. I would make sure you licence properly with clauses for commercial use though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412674",
"author": "TomF",
"timestamp": "2011-07-03T11:02:07",
"content": "Absolutely stunning. I also like the second video, where he shows the effect using a beamer on a wall. It looks really spooky.I guess, wardy is right though, this looks better on video than in real life, because of the missing stereoscopic view. So perhaps the next step would be to combine that with shutter glasses and you have your holo deck.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412675",
"author": "Programming4fun",
"timestamp": "2011-07-03T11:02:24",
"content": "Thank you for the article and the comments on my little hack!To answer some questions:I didn’t know Winscape, but it actually looks even simpler to do with Kinect than this: since distances are so big, there is no perspective change involved. It would simply be a matter of rotating the camera around a huge hemisphere projecting a panoramic image or half a cube with cube maps. Video backgrounds would be somewhat more challenging to implement and obtain.Open source… well, the demo uses my own garage-built 3D engine. It isn’t particularly well written and uses old-fashioned DirectX9, so I don’t think anybody would be interested in that. The relevant code for this demo is perhaps 10 lines of code and 10 lines of shadercode. I’ll try to set up a blog this week with this relevant code and some explanation on how to use it in your own project. Microsoft made it very clear in their SDK EULA that commercial use is strictly forbidden at this point.Thanks again!Davy",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412685",
"author": "Darkflame",
"timestamp": "2011-07-03T11:58:24",
"content": "So, its basicly what Johney-Lee did with a wiimote set up, but for the Kinect (which means no IR lights either side of your eyes needed).Cool, but given Microsoft employs Johney Lee, it seems bezire this isnt commercial for all first person games already.Id also like to see Nintendo do this for the 3DS, but that would have the (slight) added complication of needing to flip the L/R eyes of their autosteroscopic display based on where you are.Shouldnt be a big issue though, this form of headtracking has already been demod on the DSi, and the 3DS has a simliar front-facing camera and a lot more power to play with.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412703",
"author": "nism0",
"timestamp": "2011-07-03T13:47:43",
"content": "Been there, done that.http://www.youtube.com/watch?v=U8l8jxsU2N8But still, great demo!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412711",
"author": "Olm-",
"timestamp": "2011-07-03T14:30:19",
"content": "mmm … I’m using this technique for a video installation I’m finishing now, soon to be installed in a science museum.but combining it with video maping…more info later",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412753",
"author": "Whatnot",
"timestamp": "2011-07-03T17:08:33",
"content": "Very nice,To make the display 3D you’d really need to know the position of the eyes and to know that the precise angle of the head rather than just it’s position in 3D-space, but by knowing its position and the display’s position and assuming that it will be directed at the display and horizontal to the floor you can overcome that I imagine.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412760",
"author": "Whatnot",
"timestamp": "2011-07-03T17:24:46",
"content": "BTW that projection on the wall version is especially eye-catching, and you’d sell that to advertisers in no time, you can set it up that only one person at a time is in the vicinity like in a doorway or somethingI bet intel or valvesoftware or google for instance would not mind paying you a few grand to have that catch the attention of the guys with money at some tradeshow or visiting their HQ, and then the single-person limitation actually helps keep it original and interesting.Might also be cute to distract people and catch their attention as they go through metaldetectors at entrances, which also limits things to one person at a time.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412830",
"author": "Olm-",
"timestamp": "2011-07-03T19:59:50",
"content": "@Whatnot : please no, advertising is already too invasive … advertising is not art nor knowledge, only noise.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412867",
"author": "Hirudinea",
"timestamp": "2011-07-03T21:15:40",
"content": "Just amazing, hurry up and release the code, finally a reason to but a kinect!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412892",
"author": "Whatnot",
"timestamp": "2011-07-03T22:37:12",
"content": "@Olm- I know, and I avoid ads as much as possible too, but that’s also because the focus of advertisers is on annoying people and making their brandname stick in their heads that way, but you can do nice advertising too if you choose and as I said you could have say intel use it to wow steve jobs when he visits for talks – which is limited and 1 on 1 stuff.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412994",
"author": "Will",
"timestamp": "2011-07-04T03:31:16",
"content": "It’s been done. See this video from 2010.http://kinecthacks.net/crazy-head-tracking-androids/And there are a few more jagged ones from mid-november 2010 too.It works on the same concept.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413061",
"author": "xorpunk",
"timestamp": "2011-07-04T08:01:29",
"content": "This is literally the only way you can do this besides pixel shifting on two lcds. There is no single screen algo without supplemental hardware.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413231",
"author": "Whatnot",
"timestamp": "2011-07-04T21:11:11",
"content": "@will As said the original is the one with the wiimote, and it doesn’t matter to me who’s on first anymore, the internet ‘somebody already said that’ thing has saturated me to such concerns, and I’m sure this guy did not steal the idea to claim it his from the ones you linked to, it’s one of those ideas a number of people get, a number but not that many.I also like the idea of using it on a horizontal monitor and with a projector, that adds a lot to it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413959",
"author": "Will",
"timestamp": "2011-07-07T03:58:46",
"content": "Yeah, it’s true, and it is a very nice design. It looks like it works very well, from the vid.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "581882",
"author": "midnight",
"timestamp": "2012-02-13T22:14:55",
"content": "I was thinking if done correctly could this be used in the same way on video glasses for example being able to see it from all angles with motion tracking",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1181549",
"author": "Eddie Bowers",
"timestamp": "2014-02-05T07:13:44",
"content": "This would be perfect for a 3D (Stereo 3D) “Phantogram” where the image appears to come up out of the table. It’s impressive as it is, but adding the motion tracking would be fantastic.",
"parent_id": "581882",
"depth": 2,
"replies": []
}
]
}
] | 1,760,377,150.86785
|
||
https://hackaday.com/2011/07/02/controlling-a-cga-monitor-with-an-arduino/
|
Controlling A CGA Monitor With An Arduino
|
Jeremy Cook
|
[
"Arduino Hacks"
] |
[
"arduino",
"cga",
"monitor"
] |
CGA monitors may not be an amazing technological advance these days, but they can generally be found very cheaply. Additionally, they have a DB-9 connector and work off of TTL ranges (0-5VDC) making them ripe for experimentation.
This hack
takes advantage of all of these aspects to bring you an Arduino controlled CGA monitor.
One problem with experimenting with one of these monitors is that they are not that well documented. Fortunately, the detailed write up for this hack goes over some of the timing and frequency issues that one may encounter with this particular monitor. The article gives an Arduino pinout and the program used to drive the monitor with very detailed comments.
Although this hack is by no means a finished product, the now blurry test pattern seen above gives a pretty good proof of concept. It will be exciting to see if this hack inspires any other microcontroller-based projects. For some further information about CGA monitors, Wikipedia also has a fairly in-depth
write-up
about the technology.
| 18
| 18
|
[
{
"comment_id": "412537",
"author": "Gray Simpson",
"timestamp": "2011-07-02T22:37:26",
"content": "I’m interested in seeing if this could result in a CGA converter for other signals!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412541",
"author": "bootnecklad",
"timestamp": "2011-07-02T22:50:01",
"content": "That’s excellent! Now to develop it in real TTL!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412597",
"author": "rj",
"timestamp": "2011-07-03T01:28:54",
"content": "Gray: what, to convert CGA display to newer? If you’re willing to forsake brown, it’s just a bunch of resistors. If you want to display other content onto a CGA monitor, *why would you do that?*",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412617",
"author": "JC",
"timestamp": "2011-07-03T03:18:45",
"content": "@Rj – no not quite, you need a scan converter to to change CGA to anything modern (like VGA) which is a bit more logic than just resistors. But I’ll be happy to check out info on just using resistors if you have some links.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412662",
"author": "dwan",
"timestamp": "2011-07-03T09:02:19",
"content": "Some years ago i made an arduino-based vga sync generator :http://olb7.free.fr/arduino/syncInterrupt.pdehere is what im doing with it now :http://vimeo.com/25822107",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412666",
"author": "nex",
"timestamp": "2011-07-03T09:32:05",
"content": "it’s not just a test pattern. it’s a flag :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412701",
"author": "j_at_chaperon",
"timestamp": "2011-07-03T13:36:59",
"content": "*why would you do that?*Learning realtime programming with an Arduino the simplest way, since there is no extra hardware involved.Or simply because you can.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412762",
"author": "Whatnot",
"timestamp": "2011-07-03T17:30:19",
"content": "Those timing distortions might actually be a use, you could use the monitor to graphically see the timing of arduino code maybe :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412820",
"author": "Alexandre Souza",
"timestamp": "2011-07-03T19:26:59",
"content": "CGA monitors not well documented? Where is the world that you live? These are simple RGB NTSC monitors with a digital interface instead of analog…these cannot be simpler (when talking about CRT monitors), it is just a TV set without the tuner! :oP",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412834",
"author": "Agent420",
"timestamp": "2011-07-03T20:04:43",
"content": "I’m an avr guy at heart, but the Propeller is the only way to go for simple, cheap uc video projects. Avr’s and pics just don’t have the resources to create a worthwhile display.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412924",
"author": "localroger",
"timestamp": "2011-07-03T23:45:20",
"content": "It would make a lot more sense to do this with a Parallax Propeller, which can actually feed useful video while it walks and chews gum producing content.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412926",
"author": "localroger",
"timestamp": "2011-07-03T23:45:58",
"content": "Jinx!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412928",
"author": "localroger",
"timestamp": "2011-07-03T23:47:00",
"content": "Duh. How did I miss Agent420’s comment before adding my own? I blame the wine.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412990",
"author": "Alex",
"timestamp": "2011-07-04T03:23:08",
"content": "@Agent420: Some AVRs have plenty of power for cool video projects – check out the Uzebox:http://uzebox.org",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413078",
"author": "Gray Simpson",
"timestamp": "2011-07-04T09:13:07",
"content": "As for why, I have a whole bunch of these lying around my house from the early nineties. But not a lot of hardware hat can interface with them!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413175",
"author": "Agent420",
"timestamp": "2011-07-04T16:48:46",
"content": "@Alex: The uzebox is certainly one of the better avr video pprojects, but is limited to tv video and still relies on overclocking and the assistance of a supplementary video generator chip. The Propeller can do svga on it’s own, and cheap lcd monitors might be even easier to source than ntsc (though it could benefit from additional memory for complex graphics).Each has it’s own advantages, but I was surprised how easily video projects are implemented with the Prop.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413274",
"author": "Old Gamer",
"timestamp": "2011-07-05T00:58:38",
"content": "@Gray Simpson: If they sync down to 15.75kHz, they’re great (albeit small!) monitors for arcade machines. Now that the original CRTs on these games typically have heavy screen burn, an old Multisync or Commodore 1084 monitors (or equivalent) are great drop-in replacements for the original 14-15″ CRTs. (I doubt they ever made 19″ monitors back then that could sync down to 15.75kHz, which is kind of a bummer…)All the old raster-based arcade classics used RGB/sync (either separate H and V sync, or composite sync) for video, so it’s just a matter of looking up which pins on the game’s circuit board correspond to R/G/B/sync.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "785809",
"author": "eventbrite strony internetowe",
"timestamp": "2012-09-15T23:02:30",
"content": "Hi there just wanted to give you a quick heads up.The text in your content seem to be running off thescreen in Opera. I’m not sure if this is a formatting issue or something to do with browser compatibility but I figured I’d post tolet you know. The layout look great though! Hope you get the issue solved soon.Many thanks",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,150.918459
|
||
https://hackaday.com/2011/07/02/not-your-ordinary-led-book-light/
|
Not Your Ordinary LED Book Light
|
Mike Nathan
|
[
"LED Hacks"
] |
[
"book",
"led",
"lighting"
] |
[Steve Hoefer] is not a huge fan of traditional table lamps, so he set off to
build a reading light of his own
that was more aesthetically pleasing than the standard fare. He thought it would be pretty appropriate to construct his reading lamp out of a book, and we’re inclined to agree.
He stripped the pages from an old book he found at the thrift store, then built a plywood frame to fill in the recently vacated area. A second frame was built inside the first to support the installation of some warm LED strips as well as the acrylic sheet he used to diffuse the light. A whisker switch was installed in the corner of the frame, which turns the lights on when the book is opened. The lamp puts out about the light equivalent of a 40W bulb, and can be “dimmed” by simply adjusting how far the cover is opened.
It looks great on his bedside table, and like some of
his other book-related hacks
, it’s quite useful as well!
Be sure to check out the video of the light’s construction we have embedded below.
[vimeo
http://vimeo.com/25118139
w=470]
| 11
| 11
|
[
{
"comment_id": "412505",
"author": "Anton Onszers",
"timestamp": "2011-07-02T19:05:47",
"content": "I love the way you can regulate the beam of light in this design. This is especially practical if you have someone next to you you don’t want to disturb. Great idea. I want one of those!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412527",
"author": "grenadier",
"timestamp": "2011-07-02T21:33:44",
"content": "It needs a battery!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412542",
"author": "Hirudinea",
"timestamp": "2011-07-02T22:50:05",
"content": "Yea its pretty cool, but like everything else, Star Trek did it first, see…http://images4.wikia.nocookie.net/__cb20100610024848/memoryalpha/en/images/thumb/8/82/Lighting_panel.jpg/180px-Lighting_panel.jpg",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412570",
"author": "lochnessduck",
"timestamp": "2011-07-02T23:54:34",
"content": "This is great. Beautiful design, “urban ergonomic” aka pleasing to the eye and feels like a more natural light. Need light to read? Open another book!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412587",
"author": "mjrippe",
"timestamp": "2011-07-03T01:01:37",
"content": "Yeah, this would totally be a marketable item. You’d just have to find a lot of the same book or books with similar clever titles ;-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412618",
"author": "M4CGYV3R",
"timestamp": "2011-07-03T03:24:27",
"content": "Now if you can turn that copy of Don Quixote into a fan, I will truly applaud your talents…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412620",
"author": "Tripp",
"timestamp": "2011-07-03T03:37:02",
"content": "I love the book choice. “City of Light” it’s just so literal.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412673",
"author": "pod",
"timestamp": "2011-07-03T10:57:51",
"content": "I would have used a reed switch, but it’s still a cool build",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412697",
"author": "agtrier",
"timestamp": "2011-07-03T13:07:14",
"content": "Steve, if you read this – there seems to be a market for this kind of design. Off you go to Dragons’ Den. Can’t wait to see this in the shops …",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412863",
"author": "Hirudinea",
"timestamp": "2011-07-03T21:06:40",
"content": "@agtrier – No, no, just get a patent on it and live off the royalities (not live well, but live.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "1617723",
"author": "theixiancom",
"timestamp": "2014-07-05T18:34:52",
"content": "Beautiful looking lamp!If you would combine that on a shelf with the external harddrive named book that looks like a book (don’t remember who makes them).. you’d be confusing a lot of people :DThis should definitely find its way on etsy… if its not there already!btw… I use Check outa reading lightfor my reading in bed… so as to not wake up my wife :D",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,151.242446
|
||
https://hackaday.com/2011/07/02/poor-mans-peltier-air-conditioner/
|
Poor Man’s Peltier Air Conditioner
|
Mike Nathan
|
[
"home hacks"
] |
[
"air conditioning",
"peltier"
] |
It’s summer in Germany, and [Valentin’s] room was getting hotter than he could handle.
Tired of suffering through the heat
, and with his always-on PC not helping matters any, he decided that he must do something to supplement his home’s air conditioner. The result of his labor is the single room poor man’s A/C unit you see above.
He had a spare Peltier cooler sitting around, so he put it to good use as the basis for his air conditioning unit. He sandwiched it between a pair of CPU heatsinks before cramming his makeshift heat pump into a shoe box. Warm air is drawn into the box and across the cold side of the Peltier before being blown back into the room. On the hot side of the box air is also pulled in by a fan, drawing heat away from the unit before being exhausted outdoors through his window.
While he hasn’t quantified the machine’s cooling power, he seems quite happy with the results. We have a spare Peltier kicking around here somewhere, perhaps we should try building one just for grins.
| 68
| 49
|
[
{
"comment_id": "412472",
"author": "????",
"timestamp": "2011-07-02T17:10:19",
"content": "How effective is the cooling? No mention on how effective it is in the article.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6330614",
"author": "MM",
"timestamp": "2021-03-12T13:10:34",
"content": "Effective? Efficient?I guess not very efficient.",
"parent_id": "412472",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "412473",
"author": "Dave Eaton",
"timestamp": "2011-07-02T17:12:12",
"content": "I’m no HVAC guy, but it is all about heat load and efficiency. Still, it’s interesting enough, and with some thermal sensors here and there, one could gather enough data to learn a bunch, and perhaps also have an excellent school project. And if it cools a fellow off a little bit more, great.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4223165",
"author": "steve brim",
"timestamp": "2017-11-27T18:25:01",
"content": "Thermo-electric heat pumps are 85% inefficient. Meaning unless your power source is free! its a waste. An automobile engine that’s running anyway, solar, wind. Or in some places landlord supplied electricity.",
"parent_id": "412473",
"depth": 2,
"replies": [
{
"comment_id": "6178253",
"author": "Ziauddin Ahmed",
"timestamp": "2019-09-09T05:03:44",
"content": "Does it matter how efficient a peltier is? Do you have any information about compressor system AC which can run below 100W and cost below $100? Thermoelectric cooler is the best answer of it, which can easily be run by 100W air or solar power module and can cool down yourself whether reading or sleeping, but don’t bother to cool all furnitures and fixtures in the room.",
"parent_id": "4223165",
"depth": 3,
"replies": []
}
]
}
]
},
{
"comment_id": "412475",
"author": "Wizzard",
"timestamp": "2011-07-02T17:18:17",
"content": "More of a ‘fun project’ than anything useful- Peltiers are notoriously inefficient. Looks to be an 80W peltier, so he’d be lucky to be getting 8W of cooling ability.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "3010258",
"author": "Krish",
"timestamp": "2016-05-04T08:37:09",
"content": "I have two 12706 side by side now, fitted on the window (removed a glass) and driven by a 200W solar panel. Who cares about efficiency! :D Even though the cooling is nothing much, it dehumidifies the air decently enough ( RH is around 70% here )",
"parent_id": "412475",
"depth": 2,
"replies": [
{
"comment_id": "5959691",
"author": "acb13adm",
"timestamp": "2019-03-10T11:33:15",
"content": "I shouldn’t, but I gotta ask, why didn’t you fit them the easy way? Anybody else know what I’m talking about? I’ll give you a hint : why remove a glass?",
"parent_id": "3010258",
"depth": 3,
"replies": []
}
]
},
{
"comment_id": "6330605",
"author": "Iván Stepaniuk",
"timestamp": "2021-03-12T11:34:39",
"content": "Not even. If you add up all the losses and the fact that you are also pumping air from outside to compensate the pressure differential, you’ll find up you have a heater, not a cooler. It could feel nicer if it blows cooler air to your face, though. A fan does that better.",
"parent_id": "412475",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "412476",
"author": "somebody",
"timestamp": "2011-07-02T17:19:06",
"content": "i need something like this, 32c at day is to much for me",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1027285",
"author": "Cuthbert",
"timestamp": "2013-07-16T05:40:34",
"content": "This week we’re supposed to be hit with 38 to 40 Celsius! I also have a peltier kicking around, but I think it would be much better to draw cooling air in from outside, then vent it back.That way, you’re not sucking the hot outside air back into your house.",
"parent_id": "412476",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "412481",
"author": "Madsn",
"timestamp": "2011-07-02T17:29:49",
"content": "Any way to make a “poor mans AC” that is a bit more efficient than the 5-10% you get with a peltier?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412483",
"author": "Mike",
"timestamp": "2011-07-02T17:36:25",
"content": "@Wizzard: Peltiers aren’t THAT inefficient.Could be an 80W peltier like the TEC12709, in which case let’s see…80W electrical input, I’d approximate the temperature difference around 20 degrees between hot side and cold side, at which the peltier CoP is around 0.3 – 0.4. Therefore transferring about 24 – 32W of heat out of the air, and effectively 30-40% efficiency",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412485",
"author": "Dax",
"timestamp": "2011-07-02T17:42:32",
"content": "The power supply that runs the TEC probably outputs more waste heat than what he can remove from the room with it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412487",
"author": "Limey",
"timestamp": "2011-07-02T17:43:59",
"content": "^ Very true",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412492",
"author": "fonetek",
"timestamp": "2011-07-02T18:01:39",
"content": "Down talk this guy down too much. This isn’t meant to cool the whole room its meant as a spot cooler. If he’s happy with the results, then I say more power to the guy.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "780979",
"author": "heron",
"timestamp": "2012-09-12T05:46:41",
"content": "guys if you wanna make an air conditioner and maximize your peltier cooling effect just make the hot part cold enough so your peltier dont need to draw much heat and it will be colder enough..then it will now depend on your design…^^ have fun making this..nothings possible in this world only humans limit themselves but GOD created humans with limitless brains so make it happen…!!",
"parent_id": "412492",
"depth": 2,
"replies": [
{
"comment_id": "3032935",
"author": "Naeem",
"timestamp": "2016-05-25T19:23:51",
"content": "Your words inspired me to say, where does the ideas come from in our minds? I think He who created the brain pours down ideas in it? I have such an out of the box approach towards things that when ever the world say it is not possible I begin to think of possibilities, but knowledge is something that support ideas and it is pure power. One without knowledge is like an empty pot. Good luck heron",
"parent_id": "780979",
"depth": 3,
"replies": []
}
]
}
]
},
{
"comment_id": "412501",
"author": "Tom",
"timestamp": "2011-07-02T18:52:24",
"content": "@Dax,2nd’ed. From personal experience with these beasts, I can confirm, they take a whacking-great amount of oomph, to give cooling to a very localized area. Having worked with triple, and quad-staged cascade systems for my job, I can vouch for the amount of power they require to do anything aside from cooling small thermal loads.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412503",
"author": "Flame500",
"timestamp": "2011-07-02T18:54:58",
"content": "Using @Mike’s number of 32 Watts that comes out to 109.2 Btu’s. It takes aprox. 5000 Btu’s to cool a small room.Still a neat project, just not very useful.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412506",
"author": "joe pittsburgh",
"timestamp": "2011-07-02T19:16:50",
"content": "I did a similar trick with one 180w Pelt. I used my watercooling loop(external to my pc at the time) to cool the hot side, put the biggest CPU cooler I had at the time, It was like a desk cooler, the fan straight at me.Shoe boxes work too, the AC unit in my old office had four “panels” of peltiers with huge heat-piping(commercial design) this cooled a 20×30′ office with 28 PCs. The panels had to have thousands of watts. But the whole unit fit in the 10ft wall, no more than 3 inch deep.about 4ft wide.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412507",
"author": "Pete",
"timestamp": "2011-07-02T19:17:44",
"content": "I was looking at designing something like this to market. Would have been great if it could work. Only 2 moving parts. After doing the research I found that it would require far more power than a conventional unit to cool even a very small room. I figured there had to be a reason it hasn’t been made already. The only way i can see this being useful is as a supplement to a phase change system.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412508",
"author": "xorpunk",
"timestamp": "2011-07-02T19:23:22",
"content": "Peltier exchange, something most of the industry are too smart to realize the potential of.My friend works for a company who currently has the most efficient method in full manufacturing(using serial-wired iron pellet grids). We beat the best energy star fridge rating using 40 usd in parts one night…I still use it to keep food in the garage 2 years later..It’s a heavily underrated method, it can replace even industrial ammonia-gas systems at 1/5 the cost and consumption…HINT: If you can get the pellets, hot-glue is perfect for doing the grid method. It’s hard to do decent peltier coolers homebrew cause of the iron material resources and sizing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412509",
"author": "xorpunk",
"timestamp": "2011-07-02T19:28:52",
"content": "I’d like to see people getting into actually making homebrew manufacturing for these, the most efficient way to date is publicly documented by companies making them.It’s electric cooling and freezing..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412513",
"author": "sneakypoo",
"timestamp": "2011-07-02T19:54:35",
"content": "@xorpunk: Why don’t you start us off by doing a small write up on it (something fun rather than dry industry papers)? The hacking community is a force to be reckoned with, we just need a nudge in the right direction to get started.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412516",
"author": "aztraph",
"timestamp": "2011-07-02T20:33:35",
"content": "I AM an HVAC guy, and points for concept, but none for scale, and minus several for moisture control. most people don’t realize the First function of your AC unit is to dehumidify the air, it can be 110 degrees but if the air is dry, your sweat will keep your body temperature stable. The first thing this will do is try to remove the moisture from the air, he probably noticed it pooling in the bottom of the box. if he doesn’t have a drain, it will probably start to play host to all sorts of bacteria. of course he could have just gotten a dc electric cooler off ebay for $40 and added fans to it, works on the same concept.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412519",
"author": "Nikita",
"timestamp": "2011-07-02T20:48:39",
"content": "Using @Mike’s and @Flame500’s numbers about 50 Peltiers could give a small room a good cool down! but at what cost?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412523",
"author": "Thomas",
"timestamp": "2011-07-02T21:00:25",
"content": "A standard A/C will have a COP that is about 10 times better than that of a peltier.It would make more sense to put the peltier directly on the forehead or something like that.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1038927",
"author": "Bruce",
"timestamp": "2013-08-11T06:02:59",
"content": "if you want to freeze your skin tissue or die than yeah go for it",
"parent_id": "412523",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "412536",
"author": "D_",
"timestamp": "2011-07-02T22:31:51",
"content": "Going by the photo of the DMM, and the stated 18V supply voltage, less than 75 W is being consumed. I can’t see how that would be that noticeable especially if the mini AC is only cooling air already cooled by a home AC, as Mile Nathan suggests in his post. However I didn’t see a mention a home AC on Valentin’s blog detailing the build. In reading the spec sheets for TEC there is a recommended amount of force that should be used to make the “sandwich” to get the best performance I doubt the method use here meets that. And BTW a heat sink equipped with a fan is not a passive cooler. Anyway it is what it is, if Valentin had fun building it, and is satisfied with the results is all that matters, no one is required to duplicate it",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412540",
"author": "steve",
"timestamp": "2011-07-02T22:46:06",
"content": "He could have gotten 300 Watts of “cooling” by just exhausting the heat of his PC to the outside. But wait- thats to simple and doesn’t have Peltiers and LEDs.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412544",
"author": "nanomonkey",
"timestamp": "2011-07-02T22:52:08",
"content": "I’d like to see a wrist version of this for cooling your blood by contact with the veins in your inner wrist. Much more effective way to cool off your body.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1324941",
"author": "Toni",
"timestamp": "2014-04-03T16:14:13",
"content": "Not a bad idea, but the SF 49ers research has found that it works better by placing the cooler across the palm of your hand. Want to learn more? Google info on the “cooling glove”: after an initial workout and a few minutes of one hand in the cooling glove, athletes performed BETTER in the immediate follow-up to the glove, than they did in their original workout.",
"parent_id": "412544",
"depth": 2,
"replies": [
{
"comment_id": "1325223",
"author": "Phil",
"timestamp": "2014-04-03T18:25:31",
"content": "Very good, but if anyone tried that they really need to use a precise temperature controller, maybe one of those industrial standard PID controllers, to regulate how cold your hand gets. Too cold and the blood vessels constrict reducing blood flow and pretty much halting any further heat transfer. The stanford researchers are looking for a marketable item, but are they able to compromise by not using a vacuum to swell the blood vessels? Trying to include a peltier module into a ‘cooling glove’ is not necessarily the right approach here. Maybe a glove designed to be worn while driving a race car, with thermally conducting metallic wire with a high ability to flex a lot without breaking, sewn around very thin passages that air or water is run through? But what I really want is a car seat skin that can be installed into any car with this sort of thing. And it really should be air cooling because there’s also a humidity control factor I want to address concerning my backside regions.",
"parent_id": "1324941",
"depth": 3,
"replies": []
}
]
}
]
},
{
"comment_id": "412581",
"author": "Microguy",
"timestamp": "2011-07-03T00:34:09",
"content": "This was probably done for kicks. I’ve played with them some. Tried to make a beer cooler one time. Just WAY too much power consumed for what you get.I had a hard enough time making a smaller insulated cooler. So I can’t see using something like this even for a “spot cooler.”I’m sure anything this maker is feeling, is probably just the feel good from playing with these things and not actual cooling.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412586",
"author": "Haku",
"timestamp": "2011-07-03T00:51:22",
"content": "Dax’s noting about how the PSU could generate more heat than the peltier would offset probably holds water, I have a couple of 100watt peltiers I’ve yet to properly impliment into something and have hesitated because a 60watt 12v PSU brick I use for something else can get quite hot and I dread to think what heat a 100watt brick would put out.Currently to help keep sane in hot weather I have a set of 9 12cm computer fans stuck together and blowing air around the room, using a Picaxe 08m I can control the speed easily through PWM and have them almost silent whilst still blowing air.As for PSU heat problems there is none, they’re being powered from an old car battery charged from a 30w solar panel :)",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "412621",
"author": "Thisupend",
"timestamp": "2011-07-03T03:48:14",
"content": "1 for using solar battery setup",
"parent_id": "412586",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "412592",
"author": "Haku",
"timestamp": "2011-07-03T01:11:37",
"content": "@nanomonkey, there’s something similar that sits on your neck to cool you down, although it uses water evaporation instead of peltier effect.http://www.amazon.com/Coolware-Personal-outdoor-Cooling-Conditioner/dp/B003L08IKU/ref=sr_1_1/183-0374509-9240029?ie=UTF8&s=electronics&qid=1309655189&sr=8-1",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412627",
"author": "xorpunk",
"timestamp": "2011-07-03T04:43:30",
"content": "@sneakypoo: The actual design has to be done with magnification and super-fine soldering, using bulky size drastically decreases the efficiency. Also the materials(bismuth telluride is most efficient) is kind of hard to form into millimeter blocks at home..@ztraph: All solutions including newer non-ammonia gas systems in consumer appliances have that problem. It’s commonly reused for cooling where it vaporizes externally..In camping coolers that use this tech it’s also used to cool, it actually takes care of itself in those applications without pumping though by simply using ventilation.This ‘hack’ is just a manufactured unit poorly implemented. The tech is super useful though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412672",
"author": "Climate Change Kills",
"timestamp": "2011-07-03T10:53:45",
"content": "Bad idea, open a window",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412686",
"author": "Olivier",
"timestamp": "2011-07-03T12:22:13",
"content": "@Climate Change Kills: congrats, that’s the stupidest idea.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412690",
"author": "Stefan",
"timestamp": "2011-07-03T12:47:08",
"content": "@Flame 500I’m assuming you’re deliberately trolling. However, in the case that you’re not, BTUs and Watts are not the same thing – BTUs measure energy, Watts measure power (rate of change of energy). It’s really important that units are correctly used and understood – so often on Hackaday I find well-meaning comments that serve to confuse and misdirect.32W is, in fact, 109.2 BTU/hr. Notice the rate of change factor here. With this in mind, where does your 5000 BTU figure come from?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412739",
"author": "Fallingwater",
"timestamp": "2011-07-03T16:34:45",
"content": "This is exactly how those tiny car refrigerators work – for suitably small amounts of “work”. Peltiers are quite inefficient even for such small volumes of air, let alone cooling rooms. Whatever effect he thinks he’s feeling in this room from this contraption, he’s fooling himself.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412822",
"author": "Flame500",
"timestamp": "2011-07-03T19:30:36",
"content": "@StefanI was simply attempting to provide some useful metrics to help people analyze this project. You are correct, I neglected to include the /hr suffix. That was semi-intentional because I wanted to compare this project to the way consumer window AC’s are rated. They are marketed based on a cooling capacity in BTU’s. I believe this is actually BTUs/hr and was attempting to avoid unnecessarily complicating the matter.To answer your question, 5000 BTU/hr is the smallest window air conditioner you can buy and that size is only supposed to be capable of cooling a 150 sq. ft room.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412862",
"author": "Stefan",
"timestamp": "2011-07-03T21:03:05",
"content": "@Flame 500Thanks for clarifying. Re-reading my post, it probably came across more aggressively than I intended. It’s good to learn a bit about AC from someone who clearly knows more than I do about it – I’ve only ever seen BTUs used to rate the contents of flammable gas canisters.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412894",
"author": "sariel",
"timestamp": "2011-07-03T22:50:17",
"content": "i like the ingenuity, but wouldn’t he be better to use a cooling coil that runs through an ice chest and then a fan blow through something like a heater core from an automobile? lots of retrofitting, but that’s what we like on HAD right?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412973",
"author": "ejonesss",
"timestamp": "2011-07-04T02:18:11",
"content": "looks like you are using a power supply for a printer.you are probably going to burn that power supply.you will need a power supply that can supply more than 10 amp.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412985",
"author": "Amos",
"timestamp": "2011-07-04T03:09:56",
"content": "They’re big on solar stuff in Germany, right? He should scale this down and make an AC unit out of it:http://hackaday.com/2008/08/29/solar-powered-ice-maker/You can get plans (or at least the materials list and vague outline; i.e. enough for a real hacker to work with ;)) somewhere on the netmowebs. I think it uses calcium chloride deicer salt and ammonia.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412988",
"author": "xyzzy",
"timestamp": "2011-07-04T03:20:15",
"content": "I have some years of experience with a commercial print system that used peltiers to cool the recycled ink, and I can tell you that these things will kill *themselves* with internal condensation. The condensation on the cold plate will corrode the solder & eventually eat the copper between the blocks. If you want the unit to last, you have to seal that internal airspace.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "412991",
"author": "Trollicus",
"timestamp": "2011-07-04T03:25:02",
"content": "When I was 12 made an “AC” unit out of a fishtank pump a heater core and blower and a tub of water.I put the pump in a tub of water outside and put the heater core inside with the blower. It worked ok then I got the idea of burying the radiator and that worked much better. Me and my best friend spent two days and managed to get it about 6 feet in the ground.It was decently effective at making a “cool” flow of air, better than nothing when it’s 99 degrees F. humid and still.Germany’s ground temp should be even cooler than Southern Indiana.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413109",
"author": "diamantmatch",
"timestamp": "2011-07-04T11:23:20",
"content": "@ joe pittsburghi have done almost the same thing.i used the watercooling loop of my server (wich has the radiator dangling out the window) to cool the hot side of a peltier module. i used a shoebox as a seal between the hot and cold side. et voila a nice cooler that cools your legs/head/arms. its even better if you place it hanging above you ^^.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413407",
"author": "Chris",
"timestamp": "2011-07-05T14:24:19",
"content": "This “air conditioner” suffers from a defect common to many of the “portable air conditioners” that I have seen in that it fails to consider the source of make up air to replace the air exhausted outside will be more warm air. In order for this device to work, the warm side of the thermal interface should be outside of the building envelope and both the supply and return (basically a heat sink with a fan) should be there. The other side of the thermocouple should be inside the building envelope, where it can both draw its supply air and exhaust cool air without creating suction from outside. This will also improve air quality and make the device’s parts that have the potential to make people ill, (if they were to accumulate potential mold food which would get and stay wet from condensation.) more cleanable and accessible.There should be no air communication between the outdoors and indoors parts.The same principles apply to any cooling device.:)",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1039144",
"author": "Phil",
"timestamp": "2013-08-11T20:59:38",
"content": "I like that approach, cut a board(insulating foam panel?) to fit tightly in a window, mount the peltier device in the middle of the board through a hole in the board, use a fan on both sides, mount the PSU on the outside of the board(maybe use the PSU exhaust as the peltier hotside cooling?), mount a sun/weather shielding box(rest of the foam panel?) on the outside, mount an aluminum flex hose on the inside to aim the cool air to where you want it. Maybe run a plastic flex hose right to your chair and connect it to one of those air-conditioned shirts from japan?",
"parent_id": "413407",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "832738",
"author": "Gordon",
"timestamp": "2012-10-24T05:01:12",
"content": "5000 BTU comes from typical 120VAC home outlets with 15A CB. Electric Space heaters and 120 VAC window AC units create about 5100 BTU and typically heat/cool a small 12×12 room",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "963656",
"author": "sony",
"timestamp": "2013-02-21T22:10:18",
"content": "Design matters, integrated with proper cooling [hotside], peltiers are good and efficient than all you people think. and it can cool more efficient than current compressor type air conditioners, with less power. Use PC PSU s for powering peltiers, they are much efficient and outputs much less heat.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "996706",
"author": "Jeff",
"timestamp": "2013-04-23T19:17:55",
"content": "I was thinking about doing something like this with a solar panel I live in florida plenty of sun! Im sure its not that efficient but lets say like this setup I get a output of 32W thats 109.2 btu an hour if I have a pretty sealed small room and not much in the way of heat generation in it wouldn’t it keep the room cooler throughout the day?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "996721",
"author": "Greenaum",
"timestamp": "2013-04-23T20:16:20",
"content": "Not noticably. I have a 40W peltier mini-fridge. It can’t even cool a can of pop on a warm spring day. And that’s just cooling a square foot of insulated box!If you only have a solar panel you need some other method. Maybe pumping cool water round, or spraying it somehow. An indoor fountain might cool the place, maybe put a few drops of bleach in the water, to keep horrible things from growing.Peltiers really are no use for cooling anything much bigger than they are. And of course, in a closed room, they generate more heat than they take away. You’d have to window-mount it, but again, just opening the window would do much more cooling.",
"parent_id": "996706",
"depth": 2,
"replies": [
{
"comment_id": "996877",
"author": "s1ugh34d",
"timestamp": "2013-04-24T03:07:51",
"content": "Very true. In my experience only thing you can do is water cool the hot side, which an A/C unit would be more efficient than a pump and fan and pelt. I’ve done the water cooling route with a already water cooled computer and it can make for a 1C difference in a closed case",
"parent_id": "996721",
"depth": 3,
"replies": []
}
]
}
]
},
{
"comment_id": "999400",
"author": "Phil",
"timestamp": "2013-04-30T17:40:18",
"content": "PSU’s fan could be used for the hot-side. But I would look into connecting the hot-side air intake to the enclosure of that ‘always on’ PC in that room!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "1018884",
"author": "corne lukken",
"timestamp": "2013-06-23T17:18:20",
"content": "not to be an dick but why is the hot side on the bottom, hot air thends to rise so the hot air would get trapped against the heating element potentialy stopping the peltier effect",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "3700043",
"author": "Mary Johanssen",
"timestamp": "2017-06-25T12:26:36",
"content": "I’ve played with Peltier stuff. As far as I can see, it’s an interesting toy and that’s all. That’s why they haven’t caught on. I’d love my Peltier to be worthwhile but it never will be.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "3715213",
"author": "ken",
"timestamp": "2017-07-01T01:36:46",
"content": "I have seen a few 6 60 watt peltier devices that are water cooled … On my boat I have a limitless source of water in the low to mid 70 degree range. I wonder how many btu’s it can gobble up. My generator on the boat provides only 900 watts . Not enough to kick off the compressor on a 5k btu AC unit. I just want something to take the edge off and peltiers seem like the ideal solution for my boat. The aft cabin is the size of a queen size mattress and half of it is like 4 feet tall the other half just over 6 feet. 6 60 watt peltier modules should be about 1200 btu’s if I read some of these posts right my generator could probably supply two or so of these things . At night that would be around 2400 btu . That might just cut it. What do you think.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4144891",
"author": "David",
"timestamp": "2017-10-18T05:06:14",
"content": "A peltier’s module cooling efficiency is 5% tops. That means only 5% of the 6x60W are converted to BTUs/hr. 6x60x0.05×4.4= 79.2 BTUs/hr",
"parent_id": "3715213",
"depth": 2,
"replies": []
},
{
"comment_id": "4145140",
"author": "Greenaum",
"timestamp": "2017-10-18T06:54:03",
"content": "Some sort of evaporative cooler might help. The air in a boat is always going to be humid. And you wouldn’t want, for example, canal water squirting into your breathing air, you wouldn’t live long enough to switch it back off again. Maybe some sort of heat exchanger? Maybe a system where there’s a radiator by your feet with cold water run through it? You could stick your feet on it to cool down, and it should take heat out of the room.As David says, Peltiers are only useful for cooling small areas very inefficiently. Like the top of a computer’s CPU, but they don’t even use them for that much any more, CPUs started generating more heat than a Peltier could carry away.",
"parent_id": "3715213",
"depth": 2,
"replies": [
{
"comment_id": "4145147",
"author": "Greenaum",
"timestamp": "2017-10-18T06:56:31",
"content": "Actually I’ve thought of Plan B: Buy a fan. If there’s no vent in your cabin, install one.",
"parent_id": "4145140",
"depth": 3,
"replies": []
}
]
}
]
},
{
"comment_id": "3715217",
"author": "ken",
"timestamp": "2017-07-01T01:40:16",
"content": "This is the unit I saw although power requirement is a little higherhttp://m.ebay.com/itm/420W-6-Chip-Semiconductor-Refrigeration-Cooler-DIY-Radiator-Air-Cooling-Device-/252931088598?hash=item3ae3de20d6%3Ag%3ADqMAAOSwurZZE1~3&_trkparms=pageci%253Ae3e7aefb-5dfd-11e7-b3be-74dbd1805aa9%257Cparentrq%253Afbcbfd9715c0a9c4a9172730fff6f30f%257Ciid%253A22",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4771298",
"author": "bviloria",
"timestamp": "2018-07-24T03:15:36",
"content": "Air room temperature which will be eventually cools. Is been sucked to cool the heat side of the peltier. So. therefore, the air room cool temperature will never be cool. Examine a conventional a/c the room side is never suck to cool the condenser. Only the outside air cools the condenser. And the evaporator gets the cool air and recycle back to the air room cool temperature. Nothing is wasted.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6352710",
"author": "Bert",
"timestamp": "2021-05-30T03:10:28",
"content": "I’d like to try to convert an old fridge/freezer to run as an AC. This old Fridge would sit in the basement, and I’d have to pipe down the room air to circulate it through the fridge, and back up to the room. It would warm the basement, unless one manages to do something with the heat emitted from the back of the fridge, such as domestic water heating.I’m not sure what sort of trouble one might run into, such as ice build up from condensation, etc.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,151.111622
|
||
https://hackaday.com/2011/07/05/kinect-controlled-quadrotor/
|
Kinect-controlled Quadrotor
|
Mike Nathan
|
[
"Kinect hacks",
"Robots Hacks"
] |
[
"Kinect",
"motion controlled",
"quadrotor"
] |
The team over at the Flying Machine Arena has been busy
combining two of our favorite toys – quadrotors and Kinect
.
Like many other hacks, they are using Kinect to monitor their joint positions, mapping a handful of actions to the operator’s movements. Once the quadrotor is aloft, it can be directed around the room using the operator’s right hand. The gesture recognition system responds almost instantly, guiding the vehicle in all directions with ease. When the user’s left hand is raised, the quadrotor does a mid-air flip and awaits its next command, while a quick clap of the hands brings the machine to rest on the ground.
For the protection of anyone testing out the system, overhead motion tracking cameras are used to keep track of the Kinect’s position, creating an invisible midair barrier through which the quadrotor is not allowed to pass.
If you have a minute, check out the video below – controlling quadrotors looks way more fun than any Kinect game we’ve come across.
[youtube=http://www.youtube.com/watch?v=A52FqfOi0Ek&w=470]
| 10
| 10
|
[
{
"comment_id": "413422",
"author": "BobSmith",
"timestamp": "2011-07-05T16:13:00",
"content": "The hack is fun, but what’s really impressive is that quadcopter. It is astonishingly stable. I want one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413424",
"author": "SuperNuRd",
"timestamp": "2011-07-05T16:38:29",
"content": "I happen to agree with BobSmith I’m very impresed with the stability of te quadracopter mabey its because it dosn’t require user input at all times so there is less of the ability to conduct an error.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413438",
"author": "twopartepoxy",
"timestamp": "2011-07-05T17:35:58",
"content": "nice. very nice.every quadrocopter i have tried has been total crap, just basically flew into the nearest wall at top speed, anyone got any recommendations for ones i can buy in the shops that actually hover like this one?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413482",
"author": "Dion",
"timestamp": "2011-07-05T20:21:52",
"content": "@twopartyepoxy – the litte Gaui ones are pretty amazing when it comes to off the shelf stability. the flying arena quads are pretty tightly controlled.They hardly oscillate which probably comes down to the fact that a computer is at the helm so they can run wickedly stiff PID settings on their boards. And they’re pretty well optimised for their weight.Big win for the left handed pointing blooper at the end :p",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413487",
"author": "Pip",
"timestamp": "2011-07-05T20:25:12",
"content": "@twopartepoxy: once it flies it’s good for market, you’ve got to program the active stabilization part yourself.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413551",
"author": "Michael",
"timestamp": "2011-07-06T01:19:49",
"content": "I love how it hovers wherever it is. Im wondering though, it is controlled in three dimentions, right? Itd be anticlimactic if it wasnt.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413648",
"author": "Stuart Young",
"timestamp": "2011-07-06T09:50:34",
"content": "Err, not to complain or anything, but Jon Oxer did this same thing at linux.conf.au back in Jan 2011, in his talk ‘Use the force, Linus’. Can’t seem to find video of it online though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413674",
"author": "ftorama",
"timestamp": "2011-07-06T11:42:03",
"content": "Next video, Kinect actuated flush….This thing has enough power to do interesting things, no?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "414108",
"author": "steve",
"timestamp": "2011-07-07T11:54:45",
"content": "Frickn Kinect PR stunt. Just because they use a Kniect they get all that publicity. Cameras have been around for quite some time! This is just stupid.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "417188",
"author": "Pier",
"timestamp": "2011-07-13T20:49:25",
"content": "They are not using kinect here… they use 8 Vicon motion capture cameras.http://www.idsc.ethz.ch/Research_DAndrea/FMA/infrastructure",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,151.157319
|
||
https://hackaday.com/2011/07/05/voice-controlled-robot-controlled-by-an-android-phone/
|
Voice Controlled Robot Controlled By An Android Phone
|
Brian Benchoff
|
[
"Android Hacks",
"Robots Hacks"
] |
[
"android",
"irobot",
"open accessory",
"voice control"
] |
[Jeff] sent in a build of a
voice controlled robot
he just finished based on the
Android ADK
and an
iRobot Create
.
The robot is able to obey voice commands telling it where to go. Currently the robot responds to forward, reverse, left, right, stop, and ‘whistle while you work.’ It’s a creative use of the Android ADK with some obvious applications, but this project really shines with the write up on
instructables
. It’s rare that we’ve seen a project so well documented; it’s a great project for someone who wants to get their feet wet in the world of robotics.
[Jeff]’s write up goes through the steps of hooking up the ADK board to iRobot and providing all the electronic necessities. [Jeff] graciously provided
the code
for his robot if anyone would like to add to his project.
The ultimate goal [Jeff] is currently working towards is something akin to a
TurtleBot
, while keeping the voice control of the robot. In all, a very nice project.
| 2
| 2
|
[
{
"comment_id": "413399",
"author": "Nardella",
"timestamp": "2011-07-05T13:12:35",
"content": "In other news, there is now a steering wheel controlled robot controlled by a car.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "413413",
"author": "Dino",
"timestamp": "2011-07-05T15:19:34",
"content": "Pretty cool and well documented! I love the Roomba as a robot building resource. I just finished up another one here as well.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,151.197461
|
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