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https://hackaday.com/2011/06/06/halloween-props-trash-can-jack-in-the-box/
|
Halloween Props: Trash Can Jack-in-the-box
|
Mike Szczys
|
[
"home hacks"
] |
[
"Halloween props",
"jack-in-the-box",
"trash can"
] |
Last year [Bob] didn’t let the little kids get some candy and continue on their way without giving them quite a fright first.
His modified trashcan
lures you in and then scares the bejesus out of you.
He calls it Oscar the Trash-bot. The image on the left shows a ghoulish-looking head peeking out of the partially opened lid of the trash can. It has some movement, but is slow and quiet. The small, slow movements catch your eye and seem safe enough. Until you get a bit closer. A range finder triggers when the unsuspecting victim draws near, causing a much bigger, faster, and bloodier beast to pop up and stick out a claw. Check out the two videos after the break. One of them shows the claw mechanism, which is made with the help of a brake cable and shows very realistic and blazingly fast movement. The other is an overview of how the entire setup works.
[youtube=http://www.youtube.com/watch?v=fYpjM76gNEY&w=470]
[youtube=http://www.youtube.com/watch?v=oBFVg1RHt34&w=470]
[Thanks Alex]
| 15
| 15
|
[
{
"comment_id": "402207",
"author": "Effigy",
"timestamp": "2011-06-06T11:51:04",
"content": "OMFG is it Halloween already?! I love halloween hacks…Oh? whats that? It’s nowhere near Halloween yet this year? oh….moving on….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402208",
"author": "34",
"timestamp": "2011-06-06T11:52:19",
"content": "Wow. I wanna see a video of this thing in action- scaring the bejeezus out of passing kids (and adults)! LMAO",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402214",
"author": "Matrixis",
"timestamp": "2011-06-06T12:20:26",
"content": "Just because it’s not Halloween yet, doesn’t mean that you don’t have to start designing and building stuff months before.Rome wasn’t built in a day and I can imagine this wasn’t either.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402217",
"author": "Blastar",
"timestamp": "2011-06-06T12:29:35",
"content": "Excellent work and really scary.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402237",
"author": "Frank",
"timestamp": "2011-06-06T13:39:55",
"content": "I thought the face thing on the left looks like a troll face",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402273",
"author": "Pete",
"timestamp": "2011-06-06T15:48:43",
"content": "…which reminds me, I haven’t seen Troll 2 in quite a while.http://youtu.be/HyophYBP_w4",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402274",
"author": "James",
"timestamp": "2011-06-06T15:55:25",
"content": "BOGLIN!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402284",
"author": "Pete",
"timestamp": "2011-06-06T16:16:11",
"content": "@JamesI believe it is “NILBOG”. Which is, of course, goblin, backwards. Which is a “wait, what?” kind of moment when you recall the name of the movie is Troll 2.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402306",
"author": "Olivier",
"timestamp": "2011-06-06T17:05:14",
"content": "Very cool! And the sounds from Duke Nukem 3D is great.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402308",
"author": "Thopter",
"timestamp": "2011-06-06T17:06:49",
"content": "Aw, I used to have one of those puppets. Now I’m all wistful and desirous of another one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402310",
"author": "Thopter",
"timestamp": "2011-06-06T17:08:50",
"content": "@PeteJames is right, it’s a Boglin, a puppet toy from the ’80s.http://en.wikipedia.org/wiki/BoglinI had one as a kid. Seeing this video has made me want one again.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402319",
"author": "ice9er",
"timestamp": "2011-06-06T17:50:04",
"content": "When I saw the picture on the front page, I went straight to the comments to say… “OMG BOGLIN!!” but you guys beat me to it.. a bunch of you. I’m feeling the boglin love. I had that exact one. hurray for growing up in the 80s.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402320",
"author": "Kevin Harrington",
"timestamp": "2011-06-06T17:52:04",
"content": "Bob and I made this is about 8 hours of build time. We used the robot controller that was designed and built by us as the first product in a new startup called Neuron Robotics. The code is all in java and is all open source and can be found here:http://code.google.com/p/nr-sdk/under the projects folder in the svn.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402338",
"author": "pete",
"timestamp": "2011-06-06T18:53:07",
"content": "@thopterYup, i was way off on that one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "403251",
"author": "Andres",
"timestamp": "2011-06-09T01:06:19",
"content": "Excellent stuff guys :)Adding a tumble drier to make the trash bin rattle would bring it to the next level.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,175.312004
|
||
https://hackaday.com/2011/06/15/mits-esuperbike-takes-on-the-isle-of-man/
|
MIT’s ESuperbike Takes On The Isle Of Man
|
Mike Nathan
|
[
"Transportation Hacks"
] |
[
"arduino",
"ebike",
"isle of man",
"racing",
"superbike"
] |
While the Isle of Man typically plays host to an array of gas-powered superbikes screaming through villages and mountain passes at unbelievable speeds,
the island’s TT Race is a bit different
. Introduced in 2009 to offer a greener alternative to the traditional motorcycle race, organizers opened up the course to electric bikes of all kinds. In order to entice participants, they even put a £10k prize on the line for the first bike that completes the race with an average speed of 100 miles per hour or faster. While no one has claimed the prize just yet, that didn’t stop the MIT Electric Vehicle team from tossing their hat into the ring this year.
Their entry into the race is the brainchild of PhD student [Lennon Rodgers] and his team of undergrads. They first designed a rough model of the motorcycle they wanted to build in CAD, and through a professor at MIT sourced some custom-made batteries for their bike. Through a series of fortunate events, the team found themselves in front of BMW management, who donated an S1000RR racing bike to the project. After a good number of alterations, including the addition of an Arduino to control the bike, they were ready for race day.
While the team didn’t take the checkered flag, they did finish the race in 4th place. Their bike managed to complete the course with an average speed of 79 mph, which isn’t bad according to [Rodgers]. He says that for their first time out, he’s happy that they finished at all, which is not something every team can claim.
| 32
| 32
|
[
{
"comment_id": "406088",
"author": "Dax",
"timestamp": "2011-06-15T12:15:47",
"content": "“37.7-mile circuit”Next challenge – drive the circuit both ways on the same battery and maintain at least 60 mph average speed.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406092",
"author": "FaultyWarrior",
"timestamp": "2011-06-15T12:19:57",
"content": "Looks great!Just for kicks, somone at A123 Systems should the KillaCycle, lol. Fastest electric-powered vehicle…period.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406093",
"author": "FaultyWarrior",
"timestamp": "2011-06-15T12:20:34",
"content": "Comment FAIL. They should ENTER the KillaCycle…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406096",
"author": "Rob",
"timestamp": "2011-06-15T12:29:32",
"content": "The KillaCycle would fail miserably. The chassis is far too raked out and enormous to allow the agility to average 100 MPH on the Isle of Man.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406098",
"author": "NeilJB",
"timestamp": "2011-06-15T12:37:10",
"content": "Well, at least the KillaCycle would make it to the first corner ahead of the pack, but after that it might just have some problems (like turning the first corner).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406100",
"author": "Bogdan",
"timestamp": "2011-06-15T12:45:46",
"content": "Wait…. did they say an arduino controlls it?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406101",
"author": "Elias",
"timestamp": "2011-06-15T12:50:48",
"content": "Arduino? Really? Give me a fucking break…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406102",
"author": "Elias",
"timestamp": "2011-06-15T12:52:13",
"content": "In addition of my previous post, I would seriously consider using an FPGA for that kind of an application. Guys from MIT have gone very low on this one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406104",
"author": "Entropia",
"timestamp": "2011-06-15T12:53:46",
"content": "Juuuuuust had to get the Arduino in there as well.*Sigh*We aren’t going back to Arduino a Day, are we?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406107",
"author": "xorpunk",
"timestamp": "2011-06-15T12:59:17",
"content": "If a team of trust fund babies at M.I.T. with a free BMW motorcycle and piles of disposable currency can’t do it nobody can",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406122",
"author": "NatureTM",
"timestamp": "2011-06-15T13:35:02",
"content": "Best part about arduinos is how mad they make people. More arduinos pls!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406131",
"author": "Joe",
"timestamp": "2011-06-15T14:10:11",
"content": "HAHA a huge FUCK YOU to all the anti-Arduino douchebags out there :DNow stop your whining and GTFO asshats",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406132",
"author": "Fffffuuuuuuu",
"timestamp": "2011-06-15T14:12:39",
"content": "It is great when you can come to a site and get exactly what you expect: complete douchebaggery by most of those who read/comment.Seriously people? These guys are MIT engineers/students, one of which is working on his PhD. They are likely more intelligent than you and clearly have constructed far cooler things. But you know you are awesome too, sitting at your desk job bitching about stuff other people have built while you scratch your ass.I love that people thought this was cool until they saw the dreaded “A” word. Oh noes, an ARDUINO – it must be shit!FPGA? Great idea! Lets buy a system that is 3x more expensive than an Arduino! Then we will spend a bunch of time designing the hardware itself before having to program it to do what we need. Awesome! Or…we can use an Arduino that costs $30, has an IDE that does everything we need, giving us more time to ride our awesome ebike!To be good hackers you do not need to constantly reinvent the wheel. Most of you are not sitting at home building your own capacitors and resistors from scratch – you go to digikey. Who among you has built your own PC from scratch? Not many, if any.Working smarter not harder is the key to efficiency and innovation, pissing and moaning about people using an Arduino is not.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406145",
"author": "leafy",
"timestamp": "2011-06-15T15:03:35",
"content": "the TT race wasn’t introduced in 2009, its the tourist trophy event that has run for longer than I’ve lived. If you followed the link to MIT then you’d see in the first paragraph how they talk about its yearly TT race but ALSO an electric event.Also show some respect and call it petrol, the isle of man isn’t in America after all.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406147",
"author": "M",
"timestamp": "2011-06-15T15:18:43",
"content": "There’s an electric motorcycle entering the pikes peak race this year too:http://www.autoweek.com/article/20110610/CARNEWS/110619990",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406149",
"author": "Devin",
"timestamp": "2011-06-15T15:25:38",
"content": "It’s not that Arduinos don’t have a place, but they’re better suited for hobbyists and designers who don’t mind something that’s underpowered and overly-complicated as long as it’s easy to set up and learn. I would have hoped that MIT wasn’t that place..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406151",
"author": "Luke",
"timestamp": "2011-06-15T15:44:08",
"content": "Why all the Arduino hate? I think what they are doing is great, regardless of what development board they are using.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406158",
"author": "Saccrolux",
"timestamp": "2011-06-15T16:03:11",
"content": "@Devin and others,If the Engineering mecca that is MIT has embraced the Arduino, perhaps it is a signal that its time to get off the soap box and find something constructive to do.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406164",
"author": "Captain Heindsight",
"timestamp": "2011-06-15T16:13:14",
"content": "“Next challenge – drive the circuit both ways on the same battery and maintain at least 60 mph average speed.”they do 2 laps, and the zero record is an average speed of 99.6mph over the two laps… troll better (the petrol powered ones also do 2 laps before a pit stop for more fuel + new tires, 6lap total)attack the one thing that’s valid – recharge times :) needs an onboard hydrogen generator…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406265",
"author": "Jack",
"timestamp": "2011-06-15T19:48:53",
"content": "$15000 Motorcycle, $30 Arduino. Proof that just because you go to MIT doesn’t mean you are a skilled engineer.What’s next, senior design projects based around mindstorms?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406346",
"author": "twopartepoxy",
"timestamp": "2011-06-15T21:58:16",
"content": "I think that this is a decent enough project, but its not rocket science. The batteries were given to them by a commercial company (free advertisement!), the bike was given to them by a company (free advertisement!). brand association?o.k. they did a bit of work with the arduino, fair enough, and even did a bit of “machining and welding parts from scratch”, well done.But (maybe I didn’t look properly, quite possible) I can’t see the designs/code/drawings/plans etc. on the website, or a link that will reveal them. (IP issues?).So, in the end, whilst it might be mildly interesting to know that they did this, without knowing how they did this exactly, its not that educational.I don’t really understand the problem that people have with arduinos, I personally prefer the mighty mighty PICAXE (prefer BASIC to C/+ or whatever it is) but anything that enables people to do stuff they otherwise couldn’t do is great.Hats off to Banzi, Cuartielles, Barragan, Maeda and all those who contributed to the arduino.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406349",
"author": "razorconcepts",
"timestamp": "2011-06-15T22:03:29",
"content": "I’m pretty sure most of the anti-arduino people are the ones who learned the hard way of assembler and traditional C style programming. It’s like how Python is taking over the computer programming area, it appears to be “easy” and not enough low level coding, but in reality its a language that [i]makes sense[/i].I’m heading to MIT next year and my language of choice will be Arduino-style with a bit of traditional bit manipulation for speed. I don’t want to waste time for every single little project to set up a project (still takes me a couple minutes to make one on AVR Studio).I just hope they didn’t use the Arduino hardware and a shield for the bike, though!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406365",
"author": "xorpunk",
"timestamp": "2011-06-15T22:37:43",
"content": "If you don’t like arduinos then you’re not cool..who cares how stuff works..we just want to attach everything to a programmable device..have they lowered the math prerequisites for grade school diplomas to addition and subtraction of integers in america yet? it’s amazing how lazy people have got there..good for other countries though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406373",
"author": "twopartepoxy",
"timestamp": "2011-06-15T23:06:20",
"content": "@razorconcepts:yes, python python python!can’t wait till its fully operational on a progammable microcontroller.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406413",
"author": "Mike",
"timestamp": "2011-06-16T01:19:50",
"content": "@Jack: I’ll sell you an Arduino for $2,400. Does that make it more suitable? What is the ideal control-to-hardware ratio?@AllTheArduinoHaters: What controls your electric motorcycle? Oh wait, you don’t have one. Do a better job or stfu.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406476",
"author": "Scott",
"timestamp": "2011-06-16T04:12:13",
"content": "This is awesome, it incorporates 3 of the things I love the most:Hacking,Motorbikes,and Arduinolove it!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406482",
"author": "anti-fanboi",
"timestamp": "2011-06-16T04:55:33",
"content": "“Brainchild”???? I don’t think that word means what you think it means…Do eBikes already exist – in exactly the same format shown?YESAre all the components available as “off the shelf”?YESDoes this offer ANYTHING novel?NOThis is just a weak attempt to associate the terms MIT and PhD with Arduino… Isn’t that the definition of lame?@Mike: Where’s yours? Are you going for hypocrisy or irony, I can’t quite tell? Fisher-Price tools make for Fisher-Price thinking. Thanks for proving that point… again.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406513",
"author": "xorpunk",
"timestamp": "2011-06-16T07:17:25",
"content": "@anti-fanboi: he probably has a hoveround with arduino controlled led arrays.There have been efficient electric scooter on the china market for years. This is just people throwing money around and achieving nothing..arduinos do suck..I have no favorites..I just don’t like everything based around a single device cause it teaches nothing..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406633",
"author": "anon",
"timestamp": "2011-06-16T15:14:58",
"content": "I just thought I’d mention that the isle of man TT races are not purely electric. The recently introduced TT ZERO race is the electric race, the rest of the races use normal bikes",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "407119",
"author": "Myke",
"timestamp": "2011-06-17T14:55:09",
"content": "@Fffffuuuuuuu: You obviously don’t know what an FPGA is. IT’S NOT A COMPLETE SYSTEM like a shitty arduino, but a very capable integrated circuit. And the prices of average FPGAs don’t nearly reach the price of a crappy overpriced Atmega328 with a slow dev. environment and pathetic PCB, that’s used by people, who can’t design their own circuits.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "407302",
"author": "c--b",
"timestamp": "2011-06-18T06:52:30",
"content": "Heres how I see this, arduinos are usefull affordable one-off microcontrollers for people who want to build cool stuff and dont really care just how they get there or if it’s a viable commercial product. When the hell did hackers start caring about the quailty of the microcontroller?That said, this is MIT; and probably isn’t any place for arduinos or hacks in general at all. You expect a bit more from an institution or corporation.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "407309",
"author": "c--b",
"timestamp": "2011-06-18T07:05:15",
"content": "Just read the story, sorta reads like they just stuffed a custom made battery into a gas powered racing bike chassis. No regenerative braking? No weight reduction following engine removal? Come on guys :p",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,175.205252
|
||
https://hackaday.com/2011/06/15/ereader-battery-never-goes-flat-in-the-sun/
|
EReader Battery Never Goes Flat (in The Sun)
|
Mike Nathan
|
[
"handhelds hacks",
"Solar Hacks"
] |
[
"charge",
"ereader",
"kobo",
"solar"
] |
Instructables user [flapke] has a Kobo eReader and
wanted to add some solar cells
to it in order to charge the battery for free. The modification
is similar to others we have seen recently
, though his work was done so well that it almost looks stock.
He started out by sourcing a pair of solar panels from DealExtreme that purported to supply 5.5v @ 80mA. Like most of us are inclined to do, he tested them before use and found that they actually put out around 50mA instead. While the performance was a bit off, they still fit his needs pretty well, as the charge current needed to be at or less than 100mA to avoid damaging the battery.
He opened the Kobo’s case, and carefully removed a section of the back panel to make room for the solar panels. Once they were soldered together in parallel, he wired them to the eReader’s battery through a Schottky diode to prevent the battery from draining.
While we think his solar modification is a great way to ensure that he never runs out of juice while reading by the pool, we would certainly add a bit of extra charge circuitry to ours to prevent damage to the battery. What do you think?
| 22
| 22
|
[
{
"comment_id": "406059",
"author": "argo",
"timestamp": "2011-06-15T11:12:37",
"content": "well …fine, but….as well as for the example of the mobilephone: Don’t understand the need for cutting the case in order to put solar cells. why not just using adhesive velcro strips over a thin and small external platform?!!?anyway …good job!!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406060",
"author": "Bogdan",
"timestamp": "2011-06-15T11:12:59",
"content": "Just another thing i wouldn’t leave in the sun…I wonder how many people are actually using these devices in areas where they can charge (it’s sunny enough) or are really away from power….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406065",
"author": "AU518987077",
"timestamp": "2011-06-15T11:23:30",
"content": "i think even minimal solar panels should be standard on a lot of devices. cellphones, handhelds, cars.i know i am liking my solar charged watch.sit it in the usn for the day and i’m good for a month or two.not looking to go completely off the grid at first, but enough to give the device enough charge in say an hour to get you started or make an emergency call or 20 minutes of use to check something.start small and work your way up as technology improves",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406066",
"author": "AU518987077",
"timestamp": "2011-06-15T11:24:52",
"content": "i think even minimal solar panels should be standard on a lot of devices. cellphones, handhelds, cars.i know i am liking my solar charged watch.sit it in the sun for the day and i’m good for a month or two.not looking to go completely off the grid at first, but enough to give the device enough charge in say an hour to get you started or make an emergency call or 20 minutes of use to check something.start small and work your way up as technology improves",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406068",
"author": "Pup",
"timestamp": "2011-06-15T11:25:51",
"content": "Have to agree with Bogdan. While the prospect of free electricity is appealing, cooking your ereader in the process of charging it really isn’t.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406077",
"author": "Rob",
"timestamp": "2011-06-15T11:37:57",
"content": "The thing all you guys are forgetting is that these things only draw power when they need to refresh the display. E-ink doesn’t require constant refresh rates. It can get JUST enough charge to refresh the display while he’s reading a page, therefore allowing him a continuous stream of reading in his hammock on a sunny day, even while running low on battery. This obviously isn’t meant to be a main charging method, but rather a battery extension method.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406083",
"author": "fartface",
"timestamp": "2011-06-15T11:56:10",
"content": "And the fact that once again they used too small and B grade cells. for that e reader to charge at a DECENT rate the entire back needs to be covered and they should have used higher grade solar cells that put out far more power.http://www.goldmine-elec-products.com/prodinfo.asp?number=G17096for starters is a good choice. to get a decent charge rate of 5V at 2.5 amps these would need to be used in an array to deliver the 5 volts. (I would go to 6 volts and regulate down to give a decent charge rate in non optimal light conditions. best would have been a fold out panel, flip over the e reader and flip open the panel to get 2X the e reader’s surface area for charging.Thus is the problem. Go tiny solar so you can charge it in a few days, or go large solar and get a full charge in 2 hours.At least cover the entire back in solar. Come on guys, go all the way with these solar projects!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406084",
"author": "jim",
"timestamp": "2011-06-15T11:57:12",
"content": "The thing is that if you’re reading it, the cells are in shade, and it’s not like you can read e-ink at night (because desert islands have no electricity or bright enough fires or even Tiki torches good enough to read by).So I guess it’ll never get overcharged unless you abandon it face down on a beach :3 But if you do, it’ll eventually explode :|",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406090",
"author": "TOC",
"timestamp": "2011-06-15T12:18:48",
"content": "Ahh, he is missing a circuit to stop charging when / if the battery is full.Wouldn’t you just use the existing charging circuit?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406095",
"author": "jeff",
"timestamp": "2011-06-15T12:24:11",
"content": "Nice, well-executed hack.. I am impressed.I think I’d rather modify a folder-style carrying case, though. You could put more cells on the inside of the front cover, and the unit could charge while you were reading. If you got a case with a reading light, you could get rid of the light and modify the battery holder to accept the charge from the cells, then provide it to the reader.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406109",
"author": "Ken",
"timestamp": "2011-06-15T13:00:29",
"content": "Is anyone else uncomfortable with trickle charging a lithium ion battery? Proper li-ion chargers are both current- and voltage-regulated and have a low current cut off.Relying on the battery’s high voltage cutoff seems like a bad idea since it the cutoff is necessarily higher than recommended charging voltage and it allows trickle charging, which is not acceptable for these batteries.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406117",
"author": "moldboy",
"timestamp": "2011-06-15T13:23:18",
"content": "Yeah a li-ion cell maximum charging voltage is 4.2V and most charge regulators are spec that at 0.5% or 1%. My understanding is that this is ~5 in the right sun minus the diode drop which changes by batch, current and temperature. That’s just asking for the battery to die or otherwise (explode).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406139",
"author": "hospadar",
"timestamp": "2011-06-15T14:27:25",
"content": "Why not just hook it up to the USB power? The usb power certainly has some charging circuitry before it hits the li-ion cell.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406160",
"author": "Nate",
"timestamp": "2011-06-15T16:04:43",
"content": "I’m not sure I understand why people are worried about trickle charging.When you plug in your eReader into a wall outlet charger, its not the wall wort that terminates the charge, its the device. As long as this cells are providing power through the normal charge path, its a non issue. (Granted I can’t check the original site cause it appears to be down)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406162",
"author": "moldboy",
"timestamp": "2011-06-15T16:06:18",
"content": "@NateThe cells aren’t providing power through the normal path. They are connected directly to the battery",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406169",
"author": "Chris",
"timestamp": "2011-06-15T16:20:40",
"content": "The normal charging path (USB) might require more current to operate reliably than solar cells can provide.I wonder though if you could, in addition to the schottky, add a zener as a shunt to limit the max voltage of the solar cells. With a 1N4731 4.3V zener, you’d see about ~3.9V across the battery. Although it won’t be able to fully charge the battery, it should keep it operating indefinitely (given enough sun) without risk of battery damage.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406172",
"author": "Dante",
"timestamp": "2011-06-15T16:26:39",
"content": "If I were in a location without electricity long enough for my eReader to die I would also be hunting my own food and building shelter out of tree branches.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406197",
"author": "Haku",
"timestamp": "2011-06-15T17:35:30",
"content": "One word on the matter of safely charging a lithium cell:MAX1551",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406214",
"author": "Rectifier",
"timestamp": "2011-06-15T18:23:04",
"content": "A neat idea, but hasn’t anyone noticed that the cells are on the back, which usually faces DOWN when you are reading? And I’m not just going to leave an ebook lying in the sun by itself, it’ll grow legs pretty fast.These sissy cells will not put out anything unless pointed directly at the sun, really.Better to just use a solar->usb charger, put it facing the sun and plug the ebook in. You get regulated charging, no holes in your ebook reader, and probably around the same price with no risk or effort. I don’t usually say it, but this hack is lame.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406233",
"author": "bothersaidpooh",
"timestamp": "2011-06-15T18:56:38",
"content": "Sounds like a good idea, a simple voltage sensor that cuts the power when the cell voltage rises to 4V would be adequate and result in a near 90% charge.Maybe something based on one of those 1381 voltage sensors?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406283",
"author": "moldboy",
"timestamp": "2011-06-15T20:24:10",
"content": "@bothersaidpoohNo the battery would only be 20% – 40% charged at 4.0Vhttp://www.limn2o4.com/battery/charger2.jpgOkay so it’s for a LiMn2O4 battery but the curves are very similar. You need to hold the battery voltage at 4.2V (Not 4.0) until the current has decreased substantially for a complete charge.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406552",
"author": "strider_mt2k",
"timestamp": "2011-06-16T09:14:42",
"content": "I still think you’d be doing better with a fixed solar charging solution and interchangeable external batteries giving USB power for standard no-hassles charging of modern devices.Swap a battery out a day, no muss no fuss.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,175.063661
|
||
https://hackaday.com/2011/06/14/turning-beer-cans-into-bells-with-35kv/
|
Turning Beer Cans Into Bells With 35kV
|
Brian Benchoff
|
[
"classic hacks"
] |
[
"beer can",
"franklin bells",
"high voltage"
] |
It looks like we now have
another way to annoy ourselves with extremely high voltage
.
The bells operate under the same principles as the
electrostatic see-saw
we covered last month. A voltage is applied to one can while the other can is grounded. An insulated pendulum is placed between each can, and with a little coaxing can be made to oscillate back and forth between the cans. As the pendulum touches the charged can, it is repelled as it gains the charge and moves to the grounded can. There, the charge is released and the cycle continues again. A homemade
Cockcroft Walton multiplier
is used to generate the +35kV needed to get the pendulum moving.
[Ben Franklin] invented the
Franklin Bells
while he was investigating electricity in the 1750s. Originally an extension of the kite & key experiment, the bells were historically used to warn of approaching thunderstorms – when the bells rang, the atmosphere was charged and lightning could strike. Even though the voltage between the bells is
huge
, very little current is drawn – the
Oxford Electric Bells
have been ringing since 1840 using the same
electrostatic battery
.
| 9
| 9
|
[
{
"comment_id": "405847",
"author": "Bill",
"timestamp": "2011-06-14T23:08:03",
"content": "I achieve this effect onstage using a piece of mylar and a Van de Graaf generator. My body acts as the ground and the mylar will fly back and forth between my hand and the generator.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405851",
"author": "Bajakens",
"timestamp": "2011-06-14T23:12:43",
"content": "I’ve done this using an old TV as a voltage source. Just covered the screen with aluminum foil.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405855",
"author": "Alan Yates",
"timestamp": "2011-06-14T23:21:07",
"content": "I did this some time ago myself:http://www.youtube.com/watch?v=h_cP8HEgIxAUsed one of those Van de Graaff mylar flying toy wands to power it. TV sets also work briefly, as do rectified flybacks or coronatron supplies from photocopiers.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405906",
"author": "jethomson",
"timestamp": "2011-06-15T02:25:39",
"content": "The grounding wire isn’t strictly necessary. The “bells” will ring until the charge on both cans has equalized. Then you can drain charge from the second bell and the ringing will start again even if the original source of high voltage has been removed. Science!http://www.youtube.com/watch?v=wb7GLs0yM1U",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405907",
"author": "jethomson",
"timestamp": "2011-06-15T02:27:50",
"content": "This would also work better if he turned the cans upside-down. Those sharp edges bleed charge.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405945",
"author": "Hirudinea",
"timestamp": "2011-06-15T04:53:45",
"content": "Soups on!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406112",
"author": "elektrophreak",
"timestamp": "2011-06-15T13:06:14",
"content": "Was I the only one who read Franklin Balls up there? :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406191",
"author": "THeOReos",
"timestamp": "2011-06-15T17:21:41",
"content": "@elektrophreak: you saved my day, allready thought i’d be the only one whose brain was down for a second :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406429",
"author": "Greycode",
"timestamp": "2011-06-16T01:56:28",
"content": "Cockcroft Walden Ladders are the coolest circuit in electronics. The voltages that can be achieved are scary. You need a Ladder to run Soviet Night Vision Goggles and I think that it is wicked cool that you can take 9V and turn it into 3K volts. Plus you can use the Ladders in cattle prods, and stun guns. Some of these Ladders become wicked high and start flaring, nothing like the smell of ozone in the morning!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,174.899932
|
||
https://hackaday.com/2011/06/14/man-spends-30-years-helping-disabled-gamers/
|
Man Spends 30 Years Helping Disabled Gamers
|
Mike Nathan
|
[
"Playstation Hacks",
"Xbox Hacks"
] |
[
"accessibility",
"controllers",
"disabled",
"gaming",
"sip & puff"
] |
Using our hands to manipulate game controllers is something most of us take for granted. However for quadriplegics, whose arms and legs are completely paralyzed, gaming becomes a nearly impossible task. One man
has spent the last 30 years of his life
trying to help quadriplegics once again “pick up” the controller and enjoy a few rounds of their favorite video games.
Retired aerospace engineer [Ken Yankelevitz] has been using his skills to create game controllers that can be easily used by disabled gamers, offering them for sale at cost. Starting with Atari joysticks in 1981, he has been perfecting his craft over the years, creating some 800 mouth-operated game controllers. As the systems and their controllers became more complex, so did [Ken’s] designs. His new Xbox and Playstation controllers use all manner of components, including sip-puff tubes and lip-activated buttons in order to allow users to access every single controller function.
Even as he approaches his 70th birthday, he is busy making controllers, though at a slower pace than he has in the past. He has said that he will continue making them for as long as he can, but at some point he will have to close up shop. This has disabled gamers worried that they may no longer have someone to turn to for custom controllers, though we hope someone steps in to fill the gap whenever that day comes.
Be sure to check out his site to
take a look at his designs
, what he has done for the disabled community is amazing.
| 26
| 25
|
[
{
"comment_id": "405832",
"author": "Roman Dulgarov",
"timestamp": "2011-06-14T22:09:07",
"content": "I’m surprised there is not a major manufacturer in this market. madCatz or some one. As cheap plastic is the only investment is in the first mold and I’m sure even with a profit margin added many disabled gamer’s would be willing to purchase them. maybe even if it was made in a “kit” form where some one had to assemble it. By the way with the advancements in price dropping significantly on 3d printers and 3d printing service houses popping up everywhere this may be even easier then before. Once the 3d model is finalized the plastics could be ordered by interested gamer’s and maybe pcb/assembly done at one of these one-off pcb services also.. then you’d just need to put together the final assembly.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6660149",
"author": "leon saeland",
"timestamp": "2023-07-07T23:14:02",
"content": "I think I used one of the first designs for the qaud stick",
"parent_id": "405832",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "405834",
"author": "glitch77",
"timestamp": "2011-06-14T22:11:04",
"content": "Wonderful stuff!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405836",
"author": "NatureTM",
"timestamp": "2011-06-14T22:19:48",
"content": "Ken Yankelevitz is an inspiration. Thanks HaD for once again reminding the community about the need for these sorts of projects. It’s too bad the big manufacturers won’t make stuff like this dispite it not being profitable, even if for the sake of PR.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405842",
"author": "Mike",
"timestamp": "2011-06-14T22:43:01",
"content": "The man is a saint!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405844",
"author": "strider_mt2k",
"timestamp": "2011-06-14T22:47:08",
"content": "Staggeringly cool.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405848",
"author": "Ray",
"timestamp": "2011-06-14T23:10:22",
"content": "At first I was like :Dthen I was like D:Hopefully someone with his mad skillz steps up to the plate.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405886",
"author": "Haku",
"timestamp": "2011-06-15T01:11:19",
"content": "If Sony wanted to start to make amends for their recent screwups, funding this guy with a no-strings contract and creating a divison to continue and expand/enhance his work to provide controllers at cost for those who are unable to use conventional pads would be a definite positive start.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405899",
"author": "jim",
"timestamp": "2011-06-15T01:52:35",
"content": "I like the first post about using rapid prototyping. A university or group could start an open source project to design and provide the plans for a controller that anybody can have made.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405902",
"author": "Thor",
"timestamp": "2011-06-15T01:57:18",
"content": "Must feel pretty bad getting a beat down in game from a quadriplegic.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405903",
"author": "Jim123e",
"timestamp": "2011-06-15T02:00:03",
"content": "This would be a perfect project for the hackerspace movement. Partner up some retired super techs with youth and pass on the skills to the next generation.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405910",
"author": "DigitalStone",
"timestamp": "2011-06-15T02:37:44",
"content": "I for one salute you sir. Well done and wish you the best in bringing the joy of fragging to those in need.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405920",
"author": "Pylon",
"timestamp": "2011-06-15T03:23:56",
"content": "Thanks a lot for your work brah.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405933",
"author": "jakesan",
"timestamp": "2011-06-15T04:27:31",
"content": "“This has disabled gamers worried that they may no longer have someone to turn to for custom controllers, though we hope someone steps in to fill the gap whenever that day comes.”Upon reading this comment, I thought to myself “Ben Heck is allready in his 70s?!?” ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405944",
"author": "R",
"timestamp": "2011-06-15T04:50:01",
"content": "The reason it’s not done commercially is because the demand is too low for it to be profitable – it would cost 5x as much. 3D printers can’t handle semiconductors, etc. and quadraplegia would prevent them from assembling it themselves.Unless someone is willing to take over from where he left of, it looks like his hobby will die with him. They really should create a charity in his honour, to carry on his work.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406006",
"author": "MauiMaker",
"timestamp": "2011-06-15T07:52:21",
"content": "I agree its a great hackerspace/open source project idea. I broached the subject with Mr Yankelevitz via email. He is sorta open to the idea but warns many of the parts are rare and have long lead times, etc. He orders big batches. To me it sounds like a digiFab project. Ken said the best way to replicate would be to buy one of his controllers and reverse engineer it.I’d be up for this if I wasnt buried under 10k projects already.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406008",
"author": "Olivier",
"timestamp": "2011-06-15T08:02:12",
"content": "@Haku: it’s Sony. They don’t care about their customers, so I don’t see why they would care about disabled gamers.Since Ken Yankelevitz doesn’t know how long he would be able to build his devices, I think it would be great to open source everything. That way, people could continue his work.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406027",
"author": "K!P",
"timestamp": "2011-06-15T08:50:33",
"content": "Open source it, redesign some part for easy 3d printing and hope smoe hackerspaces pitch in!DO IT internetz! :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406033",
"author": "Barrie",
"timestamp": "2011-06-15T09:48:44",
"content": "Great article, Mike.Inspired by this and Ken, I’ve cribbed and posted an interview with Ken taken from 1984:http://switchgaming.blogspot.com/2011/06/ken-yankelevitz-30-years-of-enabling.html@Thor – Technology can be a great equaliser. People are regularly getting thrashed by all manner of gamers on-line using all manner of alternative hacked-up accessible controllers.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406035",
"author": "SPARCS",
"timestamp": "2011-06-15T09:49:05",
"content": "When a little bloody microswitch cost $100 to allow my son to do some switching on his computer this guy is a god… in disability think of how much it should cost and add a zero. With him doing it at cost it will be making HUGE differences in peoples lives.Perhaps he could have a stab at usb switches on the iPad …please please so ProLoQuo2Go can feature scan and select…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406046",
"author": "Syrus",
"timestamp": "2011-06-15T10:36:47",
"content": "See, not all hackers are evil *cough*Great to look at some work, that has a proper function or relative goal.Damn, it would suck, not being able to game. No more campers and stuff.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406078",
"author": "Barrie",
"timestamp": "2011-06-15T11:42:14",
"content": "@R“Unless someone is willing to take over from where he left of, it looks like his hobby will die with him. They really should create a charity in his honour, to carry on his work.”Recommend taking a look here – there are many working on accessible controllers, and some charities needing hacker community support:http://www.oneswitch.org.uk/1/AGS/AGS-bespoke.htmhttp://www.specialeffect.org.ukhttp://www.specialeffect-games.org.ukhttp://www.broadenedhorizons.com/videogaming.htmhttp://www.ablegamers.org/about-us.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406294",
"author": "Quinn Dunki",
"timestamp": "2011-06-15T20:31:18",
"content": "Let’s not forget everyone’s favorite console hacker, Ben “benheck” Heckendorn. He’s long been making one-handed and other types of controllers for disabled folks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406299",
"author": "sadpanda",
"timestamp": "2011-06-15T20:36:27",
"content": "While Ben’s work is nice, these controllers seem quite a bit more advanced than his. A one handed controller is tricky – a no handed controller is downright difficult.Besides, I have not seen him do a whole hell of a lot since starting in on his video gig. Aside from those videos of course.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406326",
"author": "uzerzero",
"timestamp": "2011-06-15T21:12:24",
"content": "@Quinn DunkiThat was my thought too. Ben Heck has made some pretty innovative controllers. A big tip of the hat to both him and Ken Yankelevitz for their work. It’s nice to see people who aren’t disabled doing something for disabled people – a great show of selfless behavior.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406719",
"author": "steve",
"timestamp": "2011-06-16T17:49:22",
"content": "Great work. Truly an inspiration.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,175.417829
|
||
https://hackaday.com/2011/06/14/celebrating-the-design-principles-behind-cellphones/
|
Celebrating The Design Principles Behind Cellphones
|
Mike Szczys
|
[
"Cellphone Hacks"
] |
[
"design",
"Engineer Guy"
] |
Want to improve the finished look of your projects? There’s a lot you can learn by looking at the choices made in consumer electronics. [Bill Hammack] explores what is perhaps the most refined electronic device out there, the cell phone. Specifically,
he discusses the seven design constraints
that face every cellphone maker. They are: compactness versus usability, consumer preference, availability of energy, economic resources and available infrastructure, knowledge of materials, societal needs, and cultural constraints.
Anyone who’s whipped out their hacked-together project in a public space understands cultural constraints. Especially when
forgetting your backpack in a public place
can put the bomb squad of full alert these days. But aside from the anecdotal issues, [Bill’s] look at now-and-then cellphones really shows off the smart design that we enjoy thanks to the evolutionary process that went into what has become the wristwatch of the 21st century. See what he has to say in the video after the break.
[youtube=http://www.youtube.com/watch?v=z7r8sKzt7HM&w=470]
| 4
| 4
|
[
{
"comment_id": "405839",
"author": "patman2700",
"timestamp": "2011-06-14T22:29:29",
"content": "I love these videos – straightforward and easy to understand, yet not too dumbed-down for us to watch.Keep ’em comin’!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405905",
"author": "madcows",
"timestamp": "2011-06-15T02:19:48",
"content": "These would be great for PBS, or even some of those “science” channels.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406271",
"author": "Yann",
"timestamp": "2011-06-15T20:02:52",
"content": "Ahah! Got you! I love this guy’s videos, but this one contains an error (and this is the first time I catch him doing one). Assisted GPS is not what he’s talking about, which is cell triangulation. Assisted GPS is true GPS in terms of precision, it’s just the possible satellite position and radio frequency is preloaded from the cellphone network to speed things up.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406748",
"author": "Whatnot",
"timestamp": "2011-06-16T19:00:43",
"content": "I’d not celebrate cellphones, that whole thing went sour IMHO.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,175.35405
|
||
https://hackaday.com/2011/06/14/excuse-me-ipad-may-i-cut-in/
|
Excuse Me IPad, May I Cut In?
|
Mike Szczys
|
[
"iphone hacks",
"ipod hacks"
] |
[
"bondo",
"clamshell",
"dock",
"docking connector",
"dremel",
"rocketfish"
] |
[LostSpawn] loves his clamshell keyboard for the iPad, but he had one major beef with the design. When the tablet is installed in the landscape orientation there’s no way to plug in a dock connector for charging or other uses. He pulled out the cutting tools and
altered the case to meet his needs
.
The case is a Rocketfish iCapsule which provides a Bluetooth keyboard when you need to do a lot of typing. The hard shell does a great job of protecting the iPad, but who wants to pull it out to charge it? The thing that we can’t believe is that there’s a slot milled in the other side of the bezel so that you can plug in headphones. How did they overlook the dock connector?
To add it himself, [LostSpawn] started by drilling a dotted line along the portion that he wanted to remove. He finished shedding material with a Dremel and then set about sanding it flat. To make sure it didn’t look too much like a hack he used Bondo to build up the working edge and then sanded and painted for a factory finish. Now he can plug in the cable or an SD card adapter like the one seen to the right of the keyboard.
| 13
| 13
|
[
{
"comment_id": "405778",
"author": "Paul Potter",
"timestamp": "2011-06-14T20:18:28",
"content": "Really odd that they had not thought of that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405829",
"author": "obsoehollerith",
"timestamp": "2011-06-14T22:02:55",
"content": "Nice! The days of proprietary and penitentiary tech are given one more busted window. Bring up the artillery!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405830",
"author": "Hirudinea",
"timestamp": "2011-06-14T22:05:05",
"content": "Just correcting a bad design, he should make a little rubber plug for it though when the hole isn’t in use, just to look nicer.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405867",
"author": "therian",
"timestamp": "2011-06-15T00:02:51",
"content": "if he wanted a netbook why he get an ipad?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405921",
"author": "nope",
"timestamp": "2011-06-15T03:25:43",
"content": "“if he wanted a netbook why he get an ipad?”I’m so glad someone else said this.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406064",
"author": "doragasu",
"timestamp": "2011-06-15T11:23:26",
"content": "Just sell the iPad and buy a netbook.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406071",
"author": "Dino",
"timestamp": "2011-06-15T11:30:04",
"content": "It has now become even MORE magical! I hope he didn’t breath too much of the Unicorn dust when sanding! :)Good hack!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406137",
"author": "John",
"timestamp": "2011-06-15T14:23:45",
"content": "I am sure all the iTards out there are amazed by this. Next Hack Plz",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406174",
"author": "tampopo",
"timestamp": "2011-06-15T16:28:47",
"content": "It’s better than a netbook. Now he have an neetbook and ipad in one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406718",
"author": "Echoes",
"timestamp": "2011-06-16T17:48:01",
"content": "Nice idea. A laptop with a relatively small touchscreen. And a keyboard.I wonder if someday someone will ever create a computer like that.Maybe they could even add a few usb ports, who knows. In a few years, the tech progress may allow to do those wonderful things…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406826",
"author": "Anons",
"timestamp": "2011-06-16T22:21:36",
"content": "How is this story worthy of hackaday?I have an article, it goes like this:“The other day I bought a broom. The handle was too long so I drew a line for what size I wanted it to be, then used a hacksaw and some sandpaper to cut it. THE END”Now… Where is that tips link?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "409639",
"author": "Fallingwater",
"timestamp": "2011-06-24T18:46:26",
"content": "Slow news day?Seriously, I have 20+ things I’ve dremeled to make them more suitable to my needs, and yet somehow I think if I posted them all here they wouldn’t get accepted. I wonder why…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "480820",
"author": "iPad",
"timestamp": "2011-10-15T19:47:09",
"content": "It’s a notebook it’s an iPad , it’s aNotepad!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,174.856748
|
||
https://hackaday.com/2011/06/14/adjustable-voltage-and-polarity-tester/
|
Adjustable Voltage And Polarity Tester
|
Mike Nathan
|
[
"Tool Hacks"
] |
[
"ham",
"PIC12F675",
"polarity",
"powerpole",
"voltage"
] |
Instructables user [Rudolf] wrote in to share
a handy little tool he created
with ham radio operators in mind. Now and again, he found himself connecting to an unknown power supply, and rather than blow out all his expensive radio gear, he decided to put together a simple polarity and voltage tester that can be easily carried out in the field.
The tester features a pair of powerpole connectors, which are used quite often for connecting HAM gear. A PIC12F675 runs the show, acting as an adjustable comparator for detecting voltage levels. By default, his probe glows amber when the supply voltage is below 11.5V, turning green when the supply is between 11.5V and 15V. When the detected voltage is too high, the built-in LED glows a bright red. When the polarity is reversed, the LED flashes red regardless of the supply voltage.
All of these trigger levels can be set in the PIC’s code, which [Rudolf] is kind enough to include on his page, along with schematics for making your own.
| 20
| 20
|
[
{
"comment_id": "405776",
"author": "KD7LRI",
"timestamp": "2011-06-14T20:14:04",
"content": "Awesome. I used to have a polarity checker but never thought to do voltage as well. Will be making one of these for my kit.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405784",
"author": "Adrian",
"timestamp": "2011-06-14T20:33:06",
"content": "Very very nice! Clean interface with the LED and power connectors, and nice design and board. I really wish this wasn’t behind instructibles though – this is a project that I wanted to check out, but due to a promise never to use instructibles, I won’t be able to. One thing I might emphasize for anyone else who wants to use the circuit is to read carefully the section detailing the voltage divider – it determines the range of input voltages that you can hook this detector up to. Thanks for this!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405788",
"author": "Colecago",
"timestamp": "2011-06-14T20:43:04",
"content": "If you operate a HAM radio I should hope you own a multimeter of some kind…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405798",
"author": "Bogdan",
"timestamp": "2011-06-14T20:57:55",
"content": "Nice tool!you can also alter it so that it indicates the reverse polarity and its magnitude.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405810",
"author": "Adrian",
"timestamp": "2011-06-14T21:13:53",
"content": "@ProfPCheck out the power supply schematic. Although its not laid out the way you usually see a full bridge rectifier, it is indeed there.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405812",
"author": "vtl",
"timestamp": "2011-06-14T21:17:58",
"content": "So isnt this what a multimeter is for?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405820",
"author": "pmods",
"timestamp": "2011-06-14T21:41:08",
"content": "@vtl: Yes, and his ham radio does what cellphones are for.I am in search of a free program to help me reverse-engineer circuits (a see-through image of the PCB in the article could be autotraced). Any hints?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405840",
"author": "hawkeyaez1",
"timestamp": "2011-06-14T22:35:36",
"content": "Why not use an AC/DC bridge, a voltage regulator, and potentially a voltage booster to guarantee he has the proper polarity and voltage no matter what he plugs in to (within reason)?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405841",
"author": "Adrian",
"timestamp": "2011-06-14T22:41:29",
"content": "@haweyaez1Is an AC/DC bridge anything like the bridge rectifier he has in the schematic? Other than the boost circuitry you mentioned, everything has already been implemented in his circuit.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405845",
"author": "Shazzamy",
"timestamp": "2011-06-14T22:50:37",
"content": "@Colecago, @vtl – Yes, using a multimeter would most likely be a bit more helpful in determining the exact voltage but lets put a scenario into play here:Scenario 1:Imagine yourself out and about when you spot this new ‘Used Junk/Electronics Store’. You say to yourself“Hmm… used junk eh? I’m gonna have to check this out.”You walk into the store to find a shelf with unmarked power supplies, then you think“I’ll just pull out my trusty (cumbersome) multimeter and check out what this thing puts out!”You fumble around a few moments then you figure the voltage is ~12.3V.Scenario 2:Imagine yourself at a friend’s apartment whom had just purchased an unmarked power supply. You ask him what its estimated electric potential energy is and he fumbles around with his trusty multimeter. Meanwhile you know you have your “Headless Electric Potential Estimator and Polarity Analyzer” (HEP-EPA for short) in your pocket for times like these. Before he gets a chance to plug his multimeter in to check, you’ve already determined its polarity and made sure it is between 11.5V and 15V, which is ideal for your HAM equipment.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405870",
"author": "therian",
"timestamp": "2011-06-15T00:04:50",
"content": "‘Adjustable voltage and polarity tester” you mean voltmeter ?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405873",
"author": "david",
"timestamp": "2011-06-15T00:11:41",
"content": "Seriously, I’ve got an autoranging multimeter that’s the size of a thick credit card and it also checks diodes, fuses, and reads resistance…So, now ypu’re at that swap meet and you find a table with some transformers and power supplies. You quickly determine that the poer supply is borked due to a bad fuse, short the fuse and determine itis a 14.5 volt ac transformer and use it to determine that the transformers are actually 8k:16ohm output transformers. Serious win for the guy with the $9 pocket multimeter.Honestly, this is a solution looking for a problem.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405913",
"author": "Shazzamy",
"timestamp": "2011-06-15T02:48:01",
"content": "David, that sounds like an awesome multimeter!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405974",
"author": "ejonesss",
"timestamp": "2011-06-15T06:02:51",
"content": "if you are allowed to open up the radio without voiding warranty or fcc license you can check the wires from the plug to the board.usually the + is red, connected to the fusethe – is usually connected to the ground of the device and to the traces on the board that run along the outter edge of the board.a good radio will have a diode to protect it in some way.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406005",
"author": "Bogdan",
"timestamp": "2011-06-15T07:47:37",
"content": "Ok, you guys keep pointing that you can do that with a multimeter. Didn’t it ever happen to you to check a PSU and ignore the minus sign in front of the display?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406058",
"author": "Mister X",
"timestamp": "2011-06-15T11:06:56",
"content": "Great hack good sir, I built a similar but less sophisticated one of these 19 years ago when I became a Ham. Back then we weren’t aware of Anderson Powerpole connectors, and we used Molex connectors on our low voltage emergency Ham radio gear, so I took a new connector and I soldered in an LED that lit up Flashing Red for incorrect polarity, Green for correct, and Orange if AC was on the line. I fit all the components inside the Molex connector, so all one could see was the LED, it was sick.Of course, this was for emergency communications where out in the field one may find equipment/power supply’s that are missing polarity information, and my tiny Molex LED test connector took up virtually no space and saved my gear more than once, it’s no toy. I also built and carried a tiny polarity reverser Molex connector/adapter so if I did encounter it I was prepared for it.Yes, I have an ancient Fluke 87 but no way am I taking a DMM no matter how small, out on an emergency communications event where every ounce counts against you in the field, my fail safe LED test connector is smaller and more robust.73",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406208",
"author": "FredP",
"timestamp": "2011-06-15T18:03:41",
"content": "@Bogdan – No.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406627",
"author": "Karl",
"timestamp": "2011-06-16T14:40:24",
"content": "This obviously won’t do anything that a multimeter can’t, but it’s the sort of thing that’s easier to use in less-than-ideal-conditions (in a hurry, in the dark, etc.)Obviously if you never leave the confines of your brightly-lit on-the-grid workshop, this is just a toy.(Also, the metaphor is inexact, but just because you have a pair of vise grips doesn’t mean that you shouldn’t have a hammer and a decent set of wrenches or any of the other tools that vise grips are a poor but functional substitute for.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406632",
"author": "N1IR",
"timestamp": "2011-06-16T15:13:08",
"content": "too funny…I have a similar idea that is small and uses surface mount (SLAB_M)http://www.n1ir.com/2011_02_01_archive.html, I’ll have to add an led on mine for polarity. Great job!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "407447",
"author": "Standard Mischief",
"timestamp": "2011-06-18T19:14:24",
"content": ">…emergency communications event where every ounce counts against you in the field,Drama much? I was unaware there was a weigh-in on Field Day, much less actually deducting points for extra weight. Maybe you plan to fly to your Field Day date and are afraid of excess baggage fees?That being said, I own a half dozen multi-meters and still use this:http://en.wikipedia.org/wiki/Receptacle_testerregularly. Chill with the hatin’.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,175.479389
|
||
https://hackaday.com/2011/06/05/livelight-is-an-expertly-crafted-ambilight-clone/
|
LiveLight Is An Expertly Crafted Ambilight Clone
|
Mike Szczys
|
[
"home entertainment hacks",
"LED Hacks"
] |
[
"ambilight",
"ATmega32",
"boblight",
"ftdi",
"led",
"livelight"
] |
[SunWind] (Edit 2018: who now goes as [nerdaxic]) developed
his own version of the Phillips Ambilight system
which he is calling LiveLight. We’ve seen more than a few of
these hacks
, many of them are
based around Arduino
, and most
use LED strip lighting
. [Nerdaxic] is using strip lighting as well, but his design is clean and polished quite a bit more than anything else we’ve seen. In our minds this would be welcomed by even the most discriminating of A/V enthusiasts.
He found just the right size of project box and managed to fit everything in on a nicely milled PCB. The enclosure itself has also been milled to allow the mini USB B connectors for each of the nine RGB LED strips. But he didn’t stop there, the top of the enclosure has labels milled into it to help when hooking everything up.
An ATmega32 addresses the LED strips based on data pushed in from a computer. An on-board FTDI chip adds USB connectivity and [nerdaxic] used a hack to rewrite the EEPROM on that chip so that it enumerates with the name “LiveLight USB Interface”. A program called
Boblight
gathers the data from the currently playing video. You can see the final project in the video embedded after the break.
[youtube=http://www.youtube.com/watch?v=ILArJQlQPN0&w=470]
[Thanks Lauri and Jussi]
(2018 Edit: The old forum post, which details the development of this project, can be found
here
.)
| 30
| 30
|
[
{
"comment_id": "402110",
"author": "Hackerspacer",
"timestamp": "2011-06-05T23:19:32",
"content": "I thought this was the worlds fullest USB hub at first….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402111",
"author": "espie",
"timestamp": "2011-06-05T23:31:54",
"content": "Looks very impressive! Would have loved to test this myself :)Hate sounding like a ****, but the only gripe with all these excellent ambilight projects is that most require a PC-based program to feed data to the system. Playing most movies from PS3 etc. myself, are there any alternatives? Is the only solution to build a HDMI pass-thru to analyze picture and colors? That sounds too hard…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402112",
"author": "DeadlyFoez",
"timestamp": "2011-06-05T23:35:04",
"content": "I want one. How much do I have to pay for it? I don’t care to do the build work myself besides just the soldering if need be. But I definitely want one.Respond with an email address of how I can order one and the cost and I will pay up for it right away. This thing is great.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402119",
"author": "Panq",
"timestamp": "2011-06-06T00:13:21",
"content": "Espie: tap into the VGA/component video, use three integrating op-amps to determine how much R/G/B there is in the signal.(Full credit tohttp://hackaday.com/2011/02/17/more-ambient-lighting-monitor-hacks/#comment-335997for the idea)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402124",
"author": "TheCreator",
"timestamp": "2011-06-06T00:34:36",
"content": "Makes the screen look so much bigger. I might have to squeeze this in once I finish up some of my other projects.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402129",
"author": "drallorf",
"timestamp": "2011-06-06T00:42:49",
"content": "@panq;The ps3 stops outputting composite when it outputs hdmi – or at least it used to (may have been an update)…I’ve wanted to make one of these for my projector for years – I just picked up some addressable led strips and they’d be perfect, but again, the problem is in getting the data. I was tempted to install a webcam that just WATCHED the projected image and built the colour wash accordingly.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402132",
"author": "Peanut",
"timestamp": "2011-06-06T01:30:24",
"content": "@espie and others – I second the HDMI passthrough idea – this is a great attempt but I don’t think it would ever reach the home user market if you had to use a PC running a secondary program… not that I think they’re aiming for a home user market, but with a product like this I think they could/should……..Also, unrelated but The Lion King was probably the greatest possible test movie! :-D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402137",
"author": "Amos",
"timestamp": "2011-06-06T01:57:14",
"content": "The problem with HDMI passthrough is HDCP; AFAIK, the PS3 won’t play BD’s (not sure about games) through HDMI without an HDCP monitor.What about some unobtrusive (fiber coupled?) light sensors at the edges of the screen?Another idea: tap into the data going to the panel (for LCD/Plasma). (In fact, I just realized that would be a fairly easy way around HDCP…)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402141",
"author": "Microguy",
"timestamp": "2011-06-06T02:19:42",
"content": "One way, might be able to use a simple R/G/B sensor pointed at the screen to pick up the “average” color of the screen, and transfer that to the LED driver.Lets see…. possibly even one RGB LED could do the job as sensor. A little lens… I think the issue would response time, flicker, etc…Not a great solution, but it’d get rid of the PC.But the project itself is a fantastic build. Great box, nice finishing touches, nice PCB. Very good quality work done here.I’d like to see more work from this user. Man, sure is nice to see a quality job, over those rats nest wiring jobs from hacks.Really, it doesn’t take that much longer to do some nice wiring. You don’t have to have milled enclosures, just a nicely done project.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402145",
"author": "Jas",
"timestamp": "2011-06-06T03:05:08",
"content": "Would be a lot better if, instead of screwing around with FTDI crap, he’d just used an ATmega32U4.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402156",
"author": "Daren",
"timestamp": "2011-06-06T04:23:29",
"content": "FTDI has publicly available software that lets you customise the name of your device. No need to hack that part.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402171",
"author": "civicturbo",
"timestamp": "2011-06-06T06:14:42",
"content": "Very nice, Iv’e seen Phillips flat panels with this technology when they first came out, this is a very good copy.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402174",
"author": "Jac Goudsmit",
"timestamp": "2011-06-06T06:40:55",
"content": "Nice work! But I wonder what the price difference is between that Sony TV plus the PC plus the hardware plus the nice box plus plus plus, versus a Philips TV with the feature already in it ;-)By the way: Philips only has one ‘L’.===Jac",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402183",
"author": "_Sin",
"timestamp": "2011-06-06T08:44:18",
"content": "Apologies if this double posts – I posted earlier and it hasn’t shown up.I built something like this, but I wanted it to work with all my sources, including HDCP encrypted digital ones, and thus the PC based solution wouldn’t work.I opened up my video processor (which is external to the TV in my case) and found the pin-out for the HDCP decoder. I tapped the digital signal from that before it gets re-encrypted for output.It works great, even on PS3.What it doesn’t do, is give me different colours per-edge. That’s going to be v2.0 :)Sensors pointing at the screen are probably never going to work very well due to the difficulties of getting accurate colour, ambient lighting and reflections in the screen, and general overhead and lag.If I rebuilt this, I’d probably try to either hack an off the shelf HDCP stripper (or an HDMI splitter/sender which has hackable internals) or else try to build an HDCP decoder in an FPGA…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402189",
"author": "anonymousjoepie91",
"timestamp": "2011-06-06T09:26:16",
"content": "It would be nice if it could read ahead and then anticipate and change gradually.Right now, it’s impressive but you can really notice the slight delay. The colors on screen change and then the backlight radically alters to match – with a slight delay.It’s not very subtle.What camera was used to record that youtube video? Seems like it might work well in a movie theatre :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402197",
"author": "andy king",
"timestamp": "2011-06-06T10:32:49",
"content": "mhmmm seems quite good but this kind of system is all well and good but you need a dedicated pc to run it and even then….. it looks a bit laggy for a cinema enthusiasts taste (mine included) really these projects need some sort of hdmi passthrough for this to be useable/cost efficient for 99% of people again this includes myself ive spent well over £2500 on my cinema setup but another £500 to implement a backlight? id rather not…. but hey rome wasnt built in a day and commendable effort guys the colour rendering looks great and definately rewflects the on screen action quite well, id like to see it operating on a fast cut action scene though to see how it can cope with fast transitions.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402198",
"author": "Till",
"timestamp": "2011-06-06T10:48:09",
"content": "A HDCP Stripper Setup or this TVhttp://hackaday.com/2009/10/01/tv-hack-bypasses-hdcpmight help getting rid of the PC.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402203",
"author": "_Sin",
"timestamp": "2011-06-06T11:26:21",
"content": "Here’s a link to a page about my build, which I mentioned above:http://www.avforums.com/forums/members-home-cinema-gallery/762287-_sins-living-room.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402205",
"author": "bogdan",
"timestamp": "2011-06-06T11:27:17",
"content": "great work!Maybe the delay can be fixed if you delay both the sound and image with a certain value to compensate… I really don’t know how to do that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402213",
"author": "fartface",
"timestamp": "2011-06-06T12:11:49",
"content": "HDMI passthrough will never work…. Why? because hollywood is a bunch of morons. the brain dead HDCP that protects NOTHING is required on a lot of garbage that makes such devices impossible.Unless people STOP buying HDCP required content and HDCP enabled equipment and screams at the manufacturers about it it will only get worse.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402231",
"author": "Zoltan",
"timestamp": "2011-06-06T13:20:46",
"content": "Why not use the video-out signal in the SCART on the tv ?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402332",
"author": "John Laur",
"timestamp": "2011-06-06T18:16:20",
"content": "The HDFury is a fairly inexpensive dongle that will convert HDCP-protected HDMI to VGA. So going from an HDMI source to a splitter, then to the TV and HDFury. The HDFury would then be connected to a VGA based version of this thing.One of the main problems with doing the VGA processing is you don’t want to just average the scene but average the color in quadrants around the edges. I think it’s probably a job for an FPGA but I have never really looked into it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402376",
"author": "Brennan",
"timestamp": "2011-06-06T21:49:56",
"content": "@John LaurWhat about something cheaper like this?http://www.amazon.com/SPDIF-Component-Ypbpr-Converter-v1-3b/dp/B002SFT3ZI/ref=sr_1_1?s=electronics&ie=UTF8&qid=1307396774&sr=1-1Do you think that would be good enough to get a decent VGA output for external processing? I think that might be the best idea for my setup, since my receiver switches all HDMI sources into one output, so I could use it with all my content. Of course I would have to design a board to decode the VGA and average the colors.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402396",
"author": "raikol",
"timestamp": "2011-06-06T22:18:05",
"content": "I will use a specific STB with linux enigma2 and so on …. so i will have the output from the STB and with the lights …. :)I am very bad at soldering :S how much will cost the whole bunch done? (i want only to freak with something …. i am not sure if my girlfriend will let me to put that in the TV :) )I have seen something done with RGB strips (shiftbarts, rgb brites) …. that could be done by me … but this seems better (at least …. cheaper :S)Thank you :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "403240",
"author": "Drew",
"timestamp": "2011-06-09T00:33:31",
"content": "@espie: I was just thinking the same thing. If you stuck with YPbPr (component) cables, you could do this fairly easily, the only difficulty would be filtering out the sync signal on the Y channel, but you could do it all on an analog level, without even needing a microcontroller, let alone a PC.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "403242",
"author": "Drew",
"timestamp": "2011-06-09T00:38:34",
"content": "But that would only give you one value for RGB, not what looks like at least 4 in this implementation.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406081",
"author": "Benjamin",
"timestamp": "2011-06-15T11:50:53",
"content": "Couldn’t you mirror the video signal and just stick an old monitor/LCD screen behind the TV showing the same video? Seems a lot simpler to me and old flat screens are getting pretty cheap nowadays. Maybe use mirrors to direct the light outwards.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406591",
"author": "Jasper",
"timestamp": "2011-06-16T12:59:00",
"content": "If someone would like so see the origin of this project. This can be found here, it’s about 80 pages (translated from Dutch).http://translate.google.be/translate?js=n&prev=_t&hl=nl&ie=UTF-8&layout=2&eotf=1&sl=nl&tl=en&u=http%3A%2F%2Fgathering.tweakers.net%2Fforum%2Flist_messages%2F990389%2F0&act=urlAll info can be found here. I myself made the first version with 3 Led Bars and is working nicely.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "439543",
"author": "RINGO",
"timestamp": "2011-08-22T16:01:18",
"content": "Diy ambilight with led striphttp://www.youtube.com/watch?v=J9sOysWosEc",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "534060",
"author": "aptilight",
"timestamp": "2011-12-13T11:04:50",
"content": "hi to all.http://www.aptilight.ruit is a my project. my device work between 2 cables dvi or hdmi. But doesn’t support HDCP (",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,175.138621
|
||
https://hackaday.com/2011/06/05/washing-machine-mechanical-timer-replaced-with-microcontroller/
|
Washing Machine Mechanical Timer Replaced With Microcontroller
|
Mike Szczys
|
[
"home hacks",
"Microcontrollers"
] |
[
"18f872",
"7 segment",
"pic",
"relay",
"servo",
"solenoid",
"washing machine"
] |
After the electromechanical timer on [Paul Canello’s] washing machine broke for the third time he decided he needed to stop repairing it and find a more permanent fix. He decided to build
his own microcontroller-based system for washing his clothes
(
translated
).
Caution:
The image links on [Paul’s] page seem to be broken and will unleash a never-ending storm of empty pop-up windows if you click on them. We’ve embedded all of the images after the break to save you some hassle.
The controller on a washing machine is nothing more than a mechanical alarm clock. It starts the cycle, then moves through various modes based on the passage of time. [Paul] started his hack by observing how long the delay between cycles was meant to be, and recording which parts of the machine were switched on and off at each stage.
It turns out that when the mechanical knob is turned, it reroutes how water flows through the detergent chamber. Since that knob won’t be in the new system [Paul] came up with a way for the microcontroller to handle this by using a servo motor. The rest of the control involves relays to control the motor, and solenoid valves for the water. There are also pressure switches that give feedback for the level of the water in the machine. A PIC 16F872 serves as the new controller, with the help of a 7 segment display, a buzzer, and a pair of buttons as the user interface.
This is an older project, but after reading about
the Arduino controlled dishwasher
[Ramiro] sent us a link. Thanks!
| 12
| 10
|
[
{
"comment_id": "402136",
"author": "jim",
"timestamp": "2011-06-06T01:53:21",
"content": "I hate to say that the images work fine in OS X Safari.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402170",
"author": "Life2Death",
"timestamp": "2011-06-06T06:12:40",
"content": "What, it doesnt tweet or text me when my wash is done?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "565487",
"author": "reason",
"timestamp": "2012-01-23T16:43:34",
"content": "No, I don’t want it to text or tweet me. Just have it hang all the clothes up and turn a fan on.",
"parent_id": "402170",
"depth": 2,
"replies": []
},
{
"comment_id": "565488",
"author": "reason",
"timestamp": "2012-01-23T16:45:50",
"content": "Awesome! Nice work!",
"parent_id": "402170",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "402175",
"author": "Muhz",
"timestamp": "2011-06-06T07:12:52",
"content": "The images work fine in Windows 7 Firefox too. They DON’T work on the google translated page however.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402180",
"author": "mh",
"timestamp": "2011-06-06T08:29:24",
"content": "A friend of mine recently got one of those energy and water efficient top loading washers.While the high efficiency machines may use less water, they take forever to do a load. (5 hours for one load of bleach laundry – mostly because of the multiple rinses needed to actually get the bleach out ).I was speculating about the possibility of creating a new controller for the machine to make it do a better job. She took the simper approach of upgrading to an older style machine that uses enough water to actually rinse clothes, and does it in a tolerable amount of time.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402211",
"author": "smoker_dave",
"timestamp": "2011-06-06T12:00:16",
"content": "I don’t see details of a watchdog timer implemented on the PIC.I wonder if he has considered what fault modes this “hack” could find itself in and what implications they will have…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402241",
"author": "Rob",
"timestamp": "2011-06-06T13:59:14",
"content": "@smoker_daveI could just see the machine not shutting off the water and flooding the house. Or the machine is stuck in spin mode for 2 hours while you are at the store. Or in spin mode while out of balance and it destroys the the entire laundry room.Then there is always the point where it becomes self aware and decides it doesnt want to do you laundry any more.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402257",
"author": "bothersaidpooh",
"timestamp": "2011-06-06T15:12:55",
"content": "@Rob ROFL!!!Actually this is a valid concern.I would use two microcontrollers in master/slave mode running different code in a different order with one running from battery backup so that if one locks up then the other shuts the machine down in a controlled way.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402287",
"author": "asheets",
"timestamp": "2011-06-06T16:24:45",
"content": "@Rob — The 3 problems that you list are usually prevented by other hardware not built into the timer assembly.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402443",
"author": "Dan",
"timestamp": "2011-06-07T01:28:27",
"content": "I noticed that he didn’t mention the door interlock that is common on all new machines and will need to be taken into account.See:http://www.anglia-electrics.co.uk/anatomy%20of%20a%20washing%20machine.htmlI like the way he added new features. I would like to see a leak detector incorportated to shut off the water and sound the alarm. I have not found that feature on any machine and it’s more important the older the machine becomes.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "5903962",
"author": "RoboMonkey",
"timestamp": "2019-02-22T14:33:49",
"content": "Reminds me of one of my first useful hacks WAAAAAAAAY back in the 1980s. I lived with my Aunt and her timer broke. We had NO money to fix it.I read the wiring diagram (conveniently left in the machine by the manufacturer) and determined that with some multi-pole switches and a little bit of control logic I could fix the machine but make it a manual process to operate.Kitchen timer in hand, I built the box.Yes Virginia, if you fall asleep you can have the clothes agitate for 24 hours.The fill and spin/drain functions I modified to be able to take the sensor data for water amount into account and only fill to the preset point on that dial and spin only for about 10 minutes after the water level sensor said the drum was empty, gotta love the 555 timers.She used that washer until the transmission broke about 8 years later. Best machine she had she told me once. That felt good to hear.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,175.257828
|
||
https://hackaday.com/2011/06/05/faking-high-speed-video-photography-of-repetitive-events/
|
Faking High-speed Video Photography Of Repetitive Events
|
Mike Szczys
|
[
"digital cameras hacks",
"Video Hacks"
] |
[
"high speed photography",
"high speed video",
"piezoelectric",
"pulse generator"
] |
[Destin] has been doing some high-speed and high-resolution video photography using a standard DSLR. He accomplishes this using a bit of ingenuity to
capture images of repetitive events at slightly different points in time
.
The banner image above shows a bullet travelling through a set of matchsticks. [Destin] uses the sound of the gun firing to trigger the flash that captures the image. A piezeo transducer picks up the sound, triggering a precision pulse generator. That pulse generator then triggers the flash, adding a delay based on the settings. In this way, [Destin] can capture video by firing a bullet for each frame, but adjusting the delay period of the pulse generator to capture the image when the bullet is in a slightly different place from the previous frame. It’s an old technique, but after some post-processing it produces a high-quality output without sinking thousands of dollars into an actual high-speed camera. Check out the video we’ve embedded after the break.
We like this guy’s style. We saw him
strapping a camera onto a chicken
back in December and we hope to see a lot more from him in the future.
[youtube=http://www.youtube.com/watch?v=PR0gwyZYZ_Q&w=470]
| 18
| 18
|
[
{
"comment_id": "402068",
"author": "moo",
"timestamp": "2011-06-05T20:36:16",
"content": "pretty neat",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402074",
"author": "zuul",
"timestamp": "2011-06-05T20:54:04",
"content": "hey no bible verse, cool",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402088",
"author": "Zee",
"timestamp": "2011-06-05T21:37:31",
"content": "I don’t know why but this guy gives me a wierd vibe sort of like the Jehova witnesses that come by to preach the name of the Lord.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402089",
"author": "Techartisan",
"timestamp": "2011-06-05T21:47:07",
"content": "“It’s an old technique, but after some post-processing it produces a high-quality output without sinking thousands of dollars into an actual high-speed camera.”Two words……Casio Exilimhttp://www.casio-europe.com/euro/exilim/exilimhighspeed/Im pretty sure the ex-f1 is the only one going over $1k",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402092",
"author": "Destin",
"timestamp": "2011-06-05T21:54:54",
"content": "Sorry Zee… I just like to do science experiments. It’s the haircut, isn’t it?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402094",
"author": "zing",
"timestamp": "2011-06-05T21:59:50",
"content": "Awesome",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402108",
"author": "Reggie",
"timestamp": "2011-06-05T22:59:58",
"content": "the resulting video just looks wrong, having his face pulling random shapes in the background really doesn’t add to the illusion.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402116",
"author": "TomF",
"timestamp": "2011-06-05T23:52:47",
"content": "“Faking” sounds so negative. Wouldn’t that be called subsampling in information theory?…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402118",
"author": "Eric",
"timestamp": "2011-06-06T00:12:00",
"content": "I’ve done the same thing with a high speed water droplet setup. I just uploaded the ‘raw’ results. If I remove some of the sloppy frames and re-arrange some of the frames near the end I think I can get it to look really nice.http://www.youtube.com/watch?v=qkjzDg6PWbg",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402120",
"author": "Eric",
"timestamp": "2011-06-06T00:13:22",
"content": "Note: Each of the above photos was shot on a Canon 5d mkII at 21MP. Lets see your high speed camera do that ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402121",
"author": "Munden",
"timestamp": "2011-06-06T00:15:34",
"content": "Techartisan, Look at what you linked… All of those cameras that can record in “high-speed” trade off resolution for speed.Take a look at their product manuals…210 fps 480 X 360420 fps 224 x 1681000 fps 224 x 64",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402125",
"author": "MyYz400",
"timestamp": "2011-06-06T00:36:06",
"content": "We’ve been doing the same thing for years. Our company uses a single frame PiMax camera (~$40k/ea) at roughly 50nS shutter lengths @1024×1024. We do 250nS delay increases between frames allowing us to do 80+ frame events at ~10FPS lasting the 20uS time span of our experiment. Not new, but nice to see it done with a “low” cost solution.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402152",
"author": "clide",
"timestamp": "2011-06-06T04:03:57",
"content": "The Casio Exilim line is great, but there is no way you are catching a decent shot of a bullet with one.Here are a few exampleshttp://www.youtube.com/watch?v=ojAFzGDSLwEhttp://www.youtube.com/watch?v=CnO8uiaIZCY",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402161",
"author": "andar_b",
"timestamp": "2011-06-06T05:10:05",
"content": "@ZeeI think the reason you get that odd vibe is that he rehearsed his presentation (or has cue cards) but he’s not good at making it sound natural. It sounds like he’s giving a speech.And at least you open the door. ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402220",
"author": "Keith",
"timestamp": "2011-06-06T12:58:54",
"content": "Nice use of a cool toy!For those curious, that is a $3500 toy. The cheap version (2 channel) is $2500. Wish they would “give” one to me too.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402224",
"author": "Zee",
"timestamp": "2011-06-06T13:09:58",
"content": "@Destin: Yes it might be the haircut. Your experiments are awesome nonetheless.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402323",
"author": "Andrew",
"timestamp": "2011-06-06T17:58:29",
"content": "Same technique I used to capturethisvideo of a water droplet.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402404",
"author": "Wolf",
"timestamp": "2011-06-06T22:40:53",
"content": "Very cool.I feel like guns are underused by the hacker community.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,175.536246
|
||
https://hackaday.com/2011/06/05/a-big-transformer-because-its-cool/
|
A Big Transformer, Because It’s Cool!
|
Nick Schulze
|
[
"HackIt",
"Misc Hacks"
] |
[
"flyback transformer",
"fryback",
"high voltage"
] |
[Grenadier] Had some spare wire, electrical tape, and a giant ferrite core laying about and decided to create a massive and pretty snappy looking disk shaped flyback transformer. Dubbed the
Fryback
, he claims that it will “revitalise your health and bring wondrous wealth and prosperity to your family”.
He chose a disk shaped transformer because they look cooler, fair enough.. (oh and they reduced inter-winding capacitance and the voltage difference between layers). The construction is fairly simple, but time consuming. Grenadier goes through the important steps on his website, but be prepared for 25 hours of winding wire if you decide to make your own.
Running at 48V the Fryback can output 8kV at a very high current, producing some nice thick 30cm long sparks. Check out the video after the break to see the Fryback in action.
[youtube=http://www.youtube.com/watch?v=5l9pTXYeM40&w=470]
| 29
| 29
|
[
{
"comment_id": "402043",
"author": "jc",
"timestamp": "2011-06-05T18:51:57",
"content": "The rubber chicken is a very nice touch :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402047",
"author": "gumnos",
"timestamp": "2011-06-05T19:04:29",
"content": "After reading the article-title, am I the only one that was disappointed at a lack of an Autobot/Decepticon build?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402049",
"author": "Hackerspacer",
"timestamp": "2011-06-05T19:16:53",
"content": "““revitalise your health and bring wondrous wealth and prosperity to your family”.”Or kill you.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402052",
"author": "Hackerspacer",
"timestamp": "2011-06-05T19:19:21",
"content": "48V isn’t *too bad* but still demands some respect. Also, why hand wind for 25 hours?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402054",
"author": "grenadier",
"timestamp": "2011-06-05T19:24:10",
"content": "@hackerspacer48V can’t be felt with dry hands, things only start to become noticeable at >60VDC.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402055",
"author": "grenadier",
"timestamp": "2011-06-05T19:26:15",
"content": "@hackerspacerThere was really no other way to wind it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402056",
"author": "Monty Werthington",
"timestamp": "2011-06-05T19:26:35",
"content": "Nice introduction into the world of transformers, one question though.Is that electrode on the end of a metal rod?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402059",
"author": "grenadier",
"timestamp": "2011-06-05T19:38:59",
"content": "Yep it’s metal, and the arc is hot enough to burn it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402084",
"author": "Hackerspacer",
"timestamp": "2011-06-05T21:20:59",
"content": "48VDC might produce a mild tingle on dry skin. But get it wet or penetrate the skin and with that much current behind it… *could* be a problem.Depends on the path to ground, amperage, type of current, etc.But it is running at 48V. It produces 8,000 volts at “a very high current”. A high current is meaningless if the voltage is so low that it can’t penetrate (unbroken, dry) skin. But that’s not what we are making here.Also, there have got to be ways of winding this using some kind of mechanical advantage, even if you have to spend 3 or 4 hours building a bobbin winder mechanism or some such.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402085",
"author": "Hackerspacer",
"timestamp": "2011-06-05T21:23:08",
"content": "For what it is worth, recent NEC code does talk about “high” voltage DC current and even allows “low” voltage DC current (even at thousands of amps) to be used in literally bare metal bus bars. I believe the threshold is 50 or 75 VDC. Anything under that is considered “low” voltage in bus bar application – even if you have thousands of amps of current.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402093",
"author": "MrX",
"timestamp": "2011-06-05T21:56:01",
"content": "“producing some nice thick 30cm long sparks”This is misleading. A 8kV flyback is only capable of producing a spark through a couple of centimeters of air. In the video he can only go to 30cm due to the breakdown of air into plasma which is better conductor. Try doing the same horizontally and you will get a nice jacob’s ladder.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402106",
"author": "darkshadow6921",
"timestamp": "2011-06-05T22:52:54",
"content": "I don’t get it? How do I cook the hot dog with it?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402114",
"author": "grenadier",
"timestamp": "2011-06-05T23:45:32",
"content": "@MrXYeah it’s arcs not sparks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402146",
"author": "madcows",
"timestamp": "2011-06-06T03:10:09",
"content": "Hole E. Shit. I’ve never seen an arc look so thick and fire-like. I too would like to bring wealth and prosperity to my family.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402160",
"author": "Jp",
"timestamp": "2011-06-06T04:58:09",
"content": "ooooohhh that looks just like aplasma torch.How warm/hot do the wires get on the primary side? They look a little thin …Spark, yes, for the ignition, which then transforms into (plasma) arc.I now see the rubber chicken! tres nifty :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402166",
"author": "grenadier",
"timestamp": "2011-06-06T05:45:35",
"content": "@jpThem wires get toasty!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402199",
"author": "Garbz",
"timestamp": "2011-06-06T10:59:06",
"content": "@hackerspaceThe NEC doesn’t actually define Low Voltage, only High Voltage as being >600V.Interestingly enough they are missing a definition since <60VDC according to DIN, IEC, BS, and AS would actually be Extra-Low Voltage.Also IEC rates maximum safe touch potential as 50VDC.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402200",
"author": "Till",
"timestamp": "2011-06-06T11:19:37",
"content": "Just do not lick at 50VDC and you will be fine. ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402201",
"author": "Till",
"timestamp": "2011-06-06T11:21:31",
"content": "BTW 48V is about to be the next voltage level used in cars to lower the expensive copperuseage. There are quite some miles of wire in a modern car.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402244",
"author": "bothersaidpooh",
"timestamp": "2011-06-06T14:09:24",
"content": "Just spoke to someone today about the new hybrid gas fired boilers being built which also double as a grid tied inverter.It seems that in order for the magnets not to degrade with heat they use a variant of the AC induction generator that runs on high frequency AC instead, taking advantage of skin effects.High voltage low current at many hundred kHz = small device which fits into something not much bigger than a conventional CH pump yet can comfortably generate a couple of kilowatts of power when driven at several tens of KRPM.The other variant was a thermoelectric generator which takes the waste heat from the gas burner and uses a countercurrent multiplier to get a large enough temperature differential to generate power.Makes more sense to “dump” the excess heat as electricity rather than mixing with cold water methinks.The same tech is being used on the newest electric cars to avoid using rare metals in the magnets; silver coated enamelled copper wire stator and rotor is the “secret sauce” here as its surface conductivity is better than copper at HF.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402248",
"author": "abobymouse",
"timestamp": "2011-06-06T14:15:04",
"content": "@grenadier – UK regs state 50v as maximum safe voltage.Don’t forget that 48v is plus/minus some %",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402293",
"author": "asheets",
"timestamp": "2011-06-06T16:34:09",
"content": "Reminds me of the time my college roommate and I build spark generator out of a 3vac power supply and the flyback from an old B&W TV. Was supposed to be safe enough that a person could touch it.However, my dumbass roommate decided to substitute some parts without telling me, particularly the 12vac power supply and the flyback from a color TV. I eventually regained the use of my arm. :(",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402294",
"author": "Steve Shockley",
"timestamp": "2011-06-06T16:35:54",
"content": "He should make a Jacob’s Ladder. You know, out of a real ladder.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402352",
"author": "Magnet18",
"timestamp": "2011-06-06T19:58:24",
"content": "To those worrying about 48V, I assure you that the 8000 volts will bite much worse.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402378",
"author": "asheets",
"timestamp": "2011-06-06T21:55:22",
"content": "re: 48VDC… I work with the stuff all the time in the IT/telco world… I’m much more worried about dropping a tool across the terminals (thus blowing up some expensive glass-encased lead-acid batteries, as well as melting said tool) than actually touching the terminals with my bare hands…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402572",
"author": "Punkguyta",
"timestamp": "2011-06-07T10:33:50",
"content": "@ Steve ShockleyLol, that’s something I would say, however it wouldn’t exactly be a ladder if the rungs were removed and it was split open like a pair of woman’s legs.@ AsheetsI agree, I’d be more worried about the lead acid batteries (I take it you’re working with backup power supplies in the termination buildings?). I HAVE dropped a wrench between the terminals on my tractor battery once, needless to say I was scrambling around for something to smash it out from the terminals quickly! Thank god it was already nearly toast and didn’t have a good charge in it.I’ve also often wondered if I were to short out the terminals of the POTS termination box on the outside my house, if my telephone company would just have some kind of temporary fuse on my telephone line, kind of like if you short out a usb port, just shut off the computer for a while and it resets. Or would you blow the POTS splitter card up the street in the termination building?This is something I’ve wondered for a long time, also too, anyone here held onto the wires outside their house and have someone call? I have, try it sometime. No really, try it :P Cursing and swearing will ensue.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "476093",
"author": "Az",
"timestamp": "2011-10-09T11:48:54",
"content": "Does anybody else notice that this could have been even *better*?In the opening they note that they cracked the core, but repaired it ‘good as new’ with some super glue. According to my understanding of transformers though, the continuity of the magnetic flux will now have an extra break in it, changing the shape of the field overall. This would result in a loss in performance, though someone else would have to do the math on that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "885709",
"author": "fun with electricity",
"timestamp": "2012-11-17T23:02:35",
"content": "Probably due to the video angle, but at around 1:15 to the end, It looks like (i believe) the transformer in the back is smoking up. but that could be the razor or (what i think it is), the quarter that could be the cause of the smoke.I am not very knowledgable on this subject, but i very much like the fact that you can make (once again what i think it looks like) a plasma arc outside a vaccume tube.and aside from all that i dont know about transformers and arcs, i wonder how much “fun” you would have trying to swipe your hand or fingers BETWEEN the arc. im sure its just like touching both ends, but again, not that smart upon this particular subject.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "2453330",
"author": "CH",
"timestamp": "2015-02-25T15:22:51",
"content": "I worked in the UK telecoms industry in the 1970s and the electro-mechanical telephone exchanges then used 50 VDC for main power ‘because it was safe’. True, I rarely had a shock from the equipment unless a sizeable relay was powered down by my taper-nosed pliers (81s ?) clearing a fault. In the hot summer of 1976 when the temperature in the exchange reached 32 deg C you could get quite a belt (probably several hundred volts) from the back emf in the relay coil. I’ve also seen a pair of pliers, accidently rested across the two busbars at the top of the equipment frame glow white hot and start to shower sparks before they were violently kicked off.The power used to ring the telephone bell when a call is received was 50 VAC. This was called ‘ringing current’, and could give quite a belt too as it was AC. AC was used because, for reasons of reliability, the solenoid-armature-bell setup in the phone didn’t have a breaker to interrupt the supply as a buzzer does.CH",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,175.60309
|
||
https://hackaday.com/2011/06/05/how-to-make-a-hand-drill-out-of-a-pencil-sharpener/
|
How To Make A Hand Drill Out Of A Pencil Sharpener
|
Jeremy Cook
|
[
"Tool Hacks"
] |
[
"drill",
"pencil sharpener"
] |
Necessity is the mother of invention, or so they say. [Jason] was in such a situation where he needed to install some safety railing at his grandmother’s house. He didn’t have the necessary tools available, like a drill, so he
fashioned one himself
out of a pencil sharpener and some fittings and wire that he was able to find.
Although crude, and probably not what one would choose to use if an actual drill was available, this “drill-pencil-sharpener” actually does a pretty decent job of cutting through plywood as seen in the video after the break.
[youtube
http://www.youtube.com/watch?v=aUI1T4jkQ-0&w=470%5D
Certainly this is not the first hand-cranked drill, but it just may be the first one made out of a pencil sharpener (also probably the first one to inspire a pseudo-nursery rhyme). If you like this, check out this
router mechanism
that is probably a bit more refined.
| 27
| 27
|
[
{
"comment_id": "402010",
"author": "Maave",
"timestamp": "2011-06-05T17:41:24",
"content": "This makes me think. A pencil sharpener is like an inverted drill.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402012",
"author": "Jesse",
"timestamp": "2011-06-05T17:43:36",
"content": "Bigger handle would make it go way quicker.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402013",
"author": "Hackerspacer",
"timestamp": "2011-06-05T17:52:22",
"content": "Walmart has “drills” for $20. If one truly wanted or had to make this, neat… but when other superior, cheap, faster, easier and arguably safer alternatives exist…. why bother?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402014",
"author": "Mman1506",
"timestamp": "2011-06-05T17:53:45",
"content": "How did you not mention Macgyver in this post??",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402015",
"author": "Wolfin",
"timestamp": "2011-06-05T17:58:27",
"content": "@HackerspacerObligatory devil’s advocate, I see. If you call yourself a hacker, you know the answer to your question.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402016",
"author": "JeremyC",
"timestamp": "2011-06-05T17:58:39",
"content": "@Maave – Yeah, funny you should say that, I was thinking it’s kind of like the difference between a milling machine and a lathe. Glad I wasn’t the only one that had that kind of thought.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402017",
"author": "Hyp3rlink",
"timestamp": "2011-06-05T18:05:17",
"content": "[Insert corny MacGuyver joke here]I love to see the ingenuity of the hacker community at work!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402020",
"author": "Anonymous",
"timestamp": "2011-06-05T18:06:50",
"content": "@Wolfin: What hacker doesn’t have a drill?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402031",
"author": "Hackerspacer",
"timestamp": "2011-06-05T18:10:57",
"content": "I hack when I need to because other alternatives simply don’t exist or can’t be obtained at a reasonable cost. All else equal, yes it matters that you *can* improvise/hack. That is a huge skill that I am in no means trying to undermine. But I personally choose to hack only when I have exhausted all other viable alternatives or when a simple solution can’t be otherwise obtained. YMMV.In this case, yes, this *works* but in my opinion, the fastest/best option aside from having a drill in the first place (provided there was a store nearby and the author has transportation) would be to just drive and buy one.Of course that isn’t in the spirit of this site of course but it remains the best solution (using the right tool for the job) and can be obtained at minimal cost and time.But if this works with a minimum amount of fuss and hassle and time to throw together and is reasonably safe, great!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402037",
"author": "J. Peterson",
"timestamp": "2011-06-05T18:26:25",
"content": "No drill, but he does have a digital camera, video camera, computer, internet connection…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402039",
"author": "Joey Y",
"timestamp": "2011-06-05T18:35:26",
"content": "@J. Peterson: Or he has a cellphone.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402042",
"author": "tc",
"timestamp": "2011-06-05T18:50:56",
"content": "A hacker sometimes finds themselves with a job that needs to get done right away. Occasionally, the hacker doesn’t have the right tools on hand and is forced to make due with what *is* at hand.Myself personally, I’ve performed numerous complex repairs on things using only a pocket knife, the occasional lousy assortment of rusty screwdrivers and, if I was lucky, a pair of pliers. I’ve modified tools and assorted “trash” items to meet the immediate need many times.I’ve been forced to drill holes with screwdrivers, pliers and other objects; I’ve used bare drill bits (wearing gloves of course). I *wish* I had a pencil sharpener to rig up as a hand drill at times like that.He only had a bare assortment of tools, but still got the job done – kudos to him!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402045",
"author": "Daniel",
"timestamp": "2011-06-05T18:58:08",
"content": "Have to remember how this was done if I some day should end up in prison. I can just steal a pencil sharpener and drill my way out :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402051",
"author": "Aaron",
"timestamp": "2011-06-05T19:19:11",
"content": "Or maybe Grandma’s house is two hours from his and he forgot his drill, or something? Sure you could give Wal-mart twenty bucks (actually these days more like forty) for a cheap piece of junk drill, and I guess leave it at Grandma’s in case you ever need it again. The way I see it, the drawbacks of that solution are no less than the drawbacks of this one.The way I see it, there are times when hacking isn’t the optimal solution to the problem — for example, when you’re building something somebody else is going to have to maintain, taking shortcuts tends to complicate that person’s life severely. But this looks to have been a one-off, improvised solution to a problem for which it seems about as good a solution as any other. Why waste energy caviling about it? Go do something nifty instead.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402053",
"author": "Aaron",
"timestamp": "2011-06-05T19:23:21",
"content": "And as far as safety goes, it seems a bit silly to worry too hard about it by proxy. He’s a grownup; he can do his own risk evaluation. If he screws it up, he’ll probably do better next time.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402073",
"author": "neighbor",
"timestamp": "2011-06-05T20:53:00",
"content": "I’m all for cool hacks, necessity, and all that. But why not borrow one from a neighbor?Of course that would typically require human interaction…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402083",
"author": "Scott",
"timestamp": "2011-06-05T21:20:51",
"content": "cool, but when you have the opportunity to make one rather than buy one and it helps you avoid walmart then hack on my drill building brother…hack on",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402086",
"author": "Dino",
"timestamp": "2011-06-05T21:23:56",
"content": "Now that’s a hardware hack!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402091",
"author": "Harvie.CZ",
"timestamp": "2011-06-05T21:50:33",
"content": "Actual hand-cranked drill would have some gearbox to make drilling bit less frustrating…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402109",
"author": "Joey Y",
"timestamp": "2011-06-05T23:06:01",
"content": "@Harvie.CZ: Hand-operated pencil sharpeners have planetary gears to increase the blade’s speed. This is probably why he thought to use one for a drill…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402157",
"author": "jeicrash",
"timestamp": "2011-06-06T04:24:25",
"content": "Now this looks like something I’d do, been several times I have slapped/hacked together parts as temp tools. When I was a kid, metal gears out of toys and a small toy motor where my poor mans version of a dremel and cut-off wheel.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402176",
"author": "Retroplayer",
"timestamp": "2011-06-06T07:25:59",
"content": "The real question everybody should be asking is why does he (or his grandma) have a drill bit, but no drill?My cynical side says people come up with these stories to fit their ‘hack’ after the fact. My guess is he was bored, saw two items and thought, “hmm, I wonder…” and decided to try it. Yep, it did. Cool.No ill will, just sayin’",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402196",
"author": "strider_mt2k",
"timestamp": "2011-06-06T10:17:19",
"content": "“Look, grandma, I put up your safety railing using nothing but a…Grandma don’t lean on it, GRANDMAA!!”I hope it all worked out well, but one wonders…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402574",
"author": "Punkguyta",
"timestamp": "2011-06-07T10:44:33",
"content": "@RetroplayerI agree!! I thought the same thing, where did he find a drill bit at his grandmothers, but no drill? Not even an old hand drill from the 70’s? Maybe he had forgotten the drill at home, but not the case of drill bits.Or maybe like you said, he just threw this together out of curiosity and it worked, and the grandmother and missing power drill story, is simply that, a story. Why else is he testing this out on a random piece of plywood, instead of the actual railings he was apparently installing?While the hack and information is there, if THAT is actually what happened, and it was just more of a “hack story” put together after the fact, it’s almost a form of false information and it’s a form of corruption that happens around this planet from day to day.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402853",
"author": "dc",
"timestamp": "2011-06-08T01:23:07",
"content": "Probably one of the most clever hacks I’ve seen on here in awhile, IMHO. Great work! My grandma has a pencil sharpener in her garage, maybe I’ll destroy it someday :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "1016497",
"author": "Brittany",
"timestamp": "2013-06-16T14:04:33",
"content": "thank you you help me a lot i’m a 12 year old and my teacher expect me and my friends ( 6 include me) to build handrill and i was quite shocked but this help me a lot thanks :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "3802803",
"author": "Reny Thamian",
"timestamp": "2017-07-26T08:35:45",
"content": "What if the pencil sharpener is made of plastic material? Is this strong enough? Cause I can’t get the metal sharpener in my local place.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,176.082696
|
||
https://hackaday.com/2011/06/05/vocera-b1000a-teardown/
|
Vocera B1000A Teardown
|
Mike Nathan
|
[
"Teardown"
] |
[
"teardown",
"vocera",
"voip",
"wifi"
] |
[Gray] over at Geek Chique had a bit of an eBay mishap and was suddenly the proud owner of
16 Vocera B1000A badges
. If you are not familiar, these badges are small, lightweight communications devices similar to the famous Star Trek communicator, which allow users to talk to other individuals via VOIP. He was working on getting the remaining badges up and running by reimplementing the server software, and figured that since one of the badges he purchased was not working, he might as well take it apart.
It took him awhile to get the well-made badges apart, requiring a rotary tool and some elbow grease to get the job done. Inside, he found that the device was split into two circuit boards, one being the “WiFi” board, and the other the “CPU” board. The WiFi board uses a Prism WiFi chipset, which was incredibly common at the time of construction. The CPU board sports small SRAM and flash chips as you would expect, with a Texas Instruments 5490A DSP running the show.
While it remains to be seen if tearing the device down helps [Gray] to get things up and running again, it never hurts to take a closer look to see what you are working with.
| 17
| 14
|
[
{
"comment_id": "401979",
"author": "1000100 1000001 1010110 1000101",
"timestamp": "2011-06-05T15:49:19",
"content": "The hospital I work at uses these…If you are not scavenging these for parts, they make fairly good paperweights.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402005",
"author": "anonymousjoepie91",
"timestamp": "2011-06-05T17:25:23",
"content": "Sorry, so whats the point of this article? He bought some badges and took them apart.Not trolling or anything. Just wondering if I’m missing something.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402007",
"author": "M4CGYV3R",
"timestamp": "2011-06-05T17:37:33",
"content": "So…are these like WiFi FRS radios? I guess I don’t understand why you wouldn’t just use radios or a cell phone instead.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402009",
"author": "Gray Simpson",
"timestamp": "2011-06-05T17:40:20",
"content": "You’re not missing much, to be fair. My basic aim is to reproduce the software to be able to use these without the £20,000 server application. Buying the 16 extra badges wasn’t really intentional, but since I had them I decided to tear the broken one apart. Ideally, I’d love to dump the contents of the flash chip and have a look at what it’s made of, but this is made harder by the fact that everything’s BGA. It was still interesting as a curiosity exercise that the device is not much more complicated than an arduino with a wifly shield.. The big problem with the project is that to easily reverse a network protocol, you need to be able to listen to communication between both ends – and I’ve only got one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402011",
"author": "Gray Simpson",
"timestamp": "2011-06-05T17:42:01",
"content": "@M4CGYV3R The point of Vocera badges is that they’re nominally hands-free. You press one button, and the server uses speech recognition to understand what you’re trying to do, e.g. “Call Doctor Samuels.”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402061",
"author": "Zee",
"timestamp": "2011-06-05T19:58:50",
"content": "So hospitals have them but they don’t use them?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402065",
"author": "rasz",
"timestamp": "2011-06-05T20:20:19",
"content": "so basically they are WiFi VOIP phones .. with no keypad?do you have sniffed captures?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402069",
"author": "Gray Simpson",
"timestamp": "2011-06-05T20:37:51",
"content": "@Zee No, hospitals do use them – they’re nicknamed ‘nurse crack’. @rasz I have captures of the initial requests from the badge to the server, but I haven’t been able to source a copy of the software, and the only place near me that uses it is Plymouth hospital – I figure if I started sniffing there I’d be in trouble. My local Apple store just has walkie talkies.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402103",
"author": "m1ndtr1p",
"timestamp": "2011-06-05T22:35:06",
"content": "@Gray SimpsonNot sure if this is what you’re looking for, but this may be an alternative to the Vocera server software… It seems as if Lync (what the video is about) is able to communicated with the Vocera badges possibly on it’s own, without the Vocera server software.Check it out here:http://www.youtube.com/watch?v=zB5C6gwDNSY",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402311",
"author": "Gray Simpson",
"timestamp": "2011-06-06T17:08:50",
"content": "We’re back up, sorry about the downtime – dyndns went funky on me. @m1ndtr1p – Thanks for the lync (sic) but I’m afraid on closer inspection they’re still using the agent interface of the Vocera System Software. (And it’s still not open source!) It’s still a pretty interesting video, and I want a white badge now!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402578",
"author": "Chris",
"timestamp": "2011-06-07T11:22:55",
"content": "http://cgi.ebay.co.uk/31X-Vocera-Communications-B1000-Voice-Badge-Repair-/120724899065?pt=LH_DefaultDomain_0&hash=item1c1bc3c4f9I saw this and thought of this….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402640",
"author": "Gray Simpson",
"timestamp": "2011-06-07T14:53:43",
"content": "There’s also this one!http://cgi.ebay.co.uk/Vocera-System-C2000-Chargers-x-2-B1000A-Badges-x-16-/320697421826?pt=UK_Computing_Networking_SM&hash=item4aab0e5002#ht_500wt_951– In the UK, mostly working and with everything you need (Except for the Vocera Server Software)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "1026287",
"author": "ben gould",
"timestamp": "2013-07-13T16:55:11",
"content": "hey you hacks, interesting conversation I have stumbled upon albiet old….we use a lot of these, but can’t find anyone to repair them….lets do some business….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "3515771",
"author": "jbphilly",
"timestamp": "2017-04-09T06:54:06",
"content": "I seem to be really late to the party looking at the post date but I can’t really find to much out there on what if anything can be repurposed to use in other DIY projects? I have accumulated a handful of these over the years and although I still lean heavily towards novice when it comes to electronics, I’ve been breaking apart and salvaging parts from every thing and before I toss these I figured there had to be a few good components. As for the use they were extremely helpful when I worked in the OR. As you can imagine the need for a hands free communication device is absolutely necessary. They could also do a lot more depending on your clearance like asking it where someone is? And it would tell you the location of whoever.. Etc and could also call outside lines not limited to the network. Anyway, hope you didn’t get stuck with 16 paper weights but if it’s something you ever revisit I believe I could help with what you were looking for.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6248194",
"author": "Gray",
"timestamp": "2020-05-25T02:35:56",
"content": "Actually, currently I’m at about 40 paperweights. 18 of them work properly, of which three are B2000 and the rest are a mix of the B1000 versions.Problem is, I only have one side of the conversation. I’ve been able to get three different handshake messages from the badge. Problem is, the only message I have from the server side is one I found in an old screenshot on a Cisco blogpost.The problem I’ve always had, is that I only have half the conversation. Without a transcript of a badge logging in to the server, I can essentially go no further.The original plan with the teardown was to see if I could recover data from the flash chip, either directly or through some kind of jtag/serial interface. But I’ve torn down both a B1000 and a B2000, and in both it’s a pretty gnarly looking BGA part. Even if I’d been able to do that, I’d have been stuck with the thorny problem of asking someone else to decompile and describe the process, so that I could then write clean room code.I picked these up to play with today, and I’ve learned some more things about them – but there’s a lot that looks vaguely dead end-ish. I always suspected the four exposed test points on a B2000 were the usb ethernet connection mentioned in the firmware configuration tool, but while I’ve found a ground, none of the other four are power – so I’m struggling to see what the other three pins are – USB without power would only need two of them. When you actually pull the sticker off, they’re revealed to be part of two blocks of fourteen pins. Tracing them by eye is a nogo.No idea what to do now!",
"parent_id": "3515771",
"depth": 2,
"replies": [
{
"comment_id": "6671495",
"author": "Colton Huggins",
"timestamp": "2023-08-10T10:32:19",
"content": "Any update on your project? I work at a vet hospital that could really use this but 20000 is not in our budget + the company has flat out ignored us once they learned our size",
"parent_id": "6248194",
"depth": 3,
"replies": [
{
"comment_id": "6745464",
"author": "Jack",
"timestamp": "2024-03-29T00:23:23",
"content": "github.com/combadge",
"parent_id": "6671495",
"depth": 4,
"replies": []
}
]
}
]
}
]
}
] | 1,760,377,176.240366
|
||
https://hackaday.com/2011/06/05/putting-the-flex-back-into-the-rds-80-soldering-station/
|
Putting The Flex Back Into The RDS 80 Soldering Station
|
Mike Nathan
|
[
"Tool Hacks"
] |
[
"ersa",
"rds 80",
"silicone wire",
"soldering station"
] |
[Markus]
was looking to upgrade his soldering station
, and having had good luck with Ersa in the past, opted to purchase one of their new stations, the RDS 80.
Once he got the iron home however, he was very disappointed to see that while his previous Ersa model used a silicone cable to connect the iron to the base station, his new iron used a stiff, non heat-resistant PVC cable instead. He found plenty of people complaining about the same issue online, but no one seemed to have a fix, so he set off to figure it out for himself.
He thought that he could disassemble the iron and change the wiring out once it was apart, but it seemed that there was no way of doing so without destroying it. Instead he chopped the wire off at the end of the soldering iron, replacing it with a new silicone cable. He did the same thing at the base station end, since he was forced to reuse the proprietary 4-pin plug Ersa decided to use there.
His modifications worked out nicely, and he is now happily soldering away.
If you happen to have one of these soldering stations, be sure to swing by his site to get a closer look at how he swapped out the cable.
| 16
| 16
|
[
{
"comment_id": "401972",
"author": "spellcheck",
"timestamp": "2011-06-05T15:12:29",
"content": "Nicely done. It’s a risky modification (having to cut the wires off so close to the end of the iron), but the result looks perfect.It may interest readers here to know that the Aoyue stations from Sparkfun use silicone insulated cables. It’s super flexy, anyway.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401973",
"author": "st2000",
"timestamp": "2011-06-05T15:17:21",
"content": "Now I’ll just twist these wires together and get my soldering iro… what?… hey… wait a minute!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401975",
"author": "1000100 1000001 1010110 1000101",
"timestamp": "2011-06-05T15:27:16",
"content": "@st2000Haha, exactly what I thought, but you beat me to it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401976",
"author": "hack-a-jack",
"timestamp": "2011-06-05T15:34:08",
"content": "Good solution for my 18 watter Antex iron too.The original power cord is so heavy and stiff and the awkwardness of it’s stiffness is made worse by the fact the Antex itself is so light.I’ve had it nearly a year and the kinks in the cord has yet to fully straighten out.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401984",
"author": "abobymouse",
"timestamp": "2011-06-05T16:14:22",
"content": "Nice hack. I love tweaking things to be just right.I’m gently concerned about weak points in a cable that does move a lot, but that’s just me.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401987",
"author": "Voiding Warranties",
"timestamp": "2011-06-05T16:19:42",
"content": "The plug appears to be a standard 4-pin DIN connector. Nothing proprietary about it. I use them all the time in projects.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401988",
"author": "Tech B.",
"timestamp": "2011-06-05T16:22:40",
"content": "Typo? “..to have a fix, so he set *of* to figure it..”I did something kinda similar with my phone charger, it was too short to lay on my night-stand, so I cut it, and extended it.Good job!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401991",
"author": "Jay",
"timestamp": "2011-06-05T16:26:03",
"content": "Seems to me like a bit of a risk to leave the wires open to the air there… Obviously the iron can’t hit that part, but it seems like it would be easy to flex one of them to the point that it didn’t make contact…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401999",
"author": "wulfman",
"timestamp": "2011-06-05T17:12:15",
"content": "Hmmm no heat shrink tubing ?I just buy used professional soldering stations on ebay. I also have one i purchased over 30 years ago still going strong after replacing the heating element. It really don’t pay to buy the cheap ones.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402008",
"author": "macona",
"timestamp": "2011-06-05T17:39:48",
"content": "Yep, 4 pin-mini din.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402038",
"author": "J. Peterson",
"timestamp": "2011-06-05T18:34:12",
"content": "Yeah – this brings to mind Sparkfun’s April 1st joke:http://www.sparkfun.com/products/10624",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402082",
"author": "cpmike",
"timestamp": "2011-06-05T21:05:35",
"content": "@jay + wulfman:read the actual article link and youll see not only did he solder and heatshrink every wire, he put another layer of heatshrink over the entire thing and even reinstalled the flex/strain relief.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402162",
"author": "jpr",
"timestamp": "2011-06-06T05:32:16",
"content": "Does anyone know where to buy cable like that? He just got it from the old station.I can’t seem to find any good sources for simple 2-4 conductor non-shielded cable. Sure digikey/mouser has some, but its usually 100ft minimums.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402168",
"author": "Markus Gebhard",
"timestamp": "2011-06-06T06:06:25",
"content": "You’re right and I was wrong: The plug is a standard 4-pin DIN connector (no mini DIN though). I first thought it was proprietary, because my local dealer did not have it. Also the article about DIN plugs in the german wikipedia does show a different pin layout for 4-pin DIN plugs…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "1016583",
"author": "Simeon Petkov",
"timestamp": "2013-06-16T21:59:56",
"content": "Can somebody tell me what is the resistance of RT80’s sensor, and also, is it NTC or PTC ?Thank you !",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "3002682",
"author": "Arturs Bebris",
"timestamp": "2016-04-26T17:26:24",
"content": "You are wrong about proprietary 4-pin plug. It is a standard 4pin DIN plug… and in fact, soldering station has standard DIN socket with locking. And you can use it with following plug, to get the locking functionality: LUMBERG \t0132 04 DINhttp://lv.farnell.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId=15001&langId=371&urlRequestType=Base&partNumber=1814828&storeId=10166",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,175.903257
|
||
https://hackaday.com/2011/06/04/programming-robots-like-you-would-train-a-pet/
|
Programming Robots Like You Would Train A Pet
|
Mike Szczys
|
[
"Robots Hacks"
] |
[
"dog",
"leash",
"training",
"walk"
] |
[Jim] has been working with a team from various Universities to develop an intuitive way to guide and train assistance robots. They focused on one particular technique,
training a robot to follow on a leash in the same way you would a pet dog
(PDF).
He was inspired to send in a link to his research after reading about
the Kinect-powered shopping card robot
. He figures that that project is similar to his own, but his does have several added benefits. The first being that if a robot is on a leash, everyone knows who that bot is following or assisting. But there is the added benefit of the user needing no training whatsoever. That’s because the act of walking a dog on a leash is commonplace in developed societies; you may not have ever owned a dog, but you’ve seen others walking them on leashes numerous times and could do so yourself without any training.
The leash connects to a sensor-filled turret in the center of the robot’s body. The bot can sense when, and in which direction the user is pulling the leash. There’s also an emergency kill switch on the handle for added functionality. Take a look at some of the test video after the break to see how quickly humans can adapt to this type of user interface.
[youtube=http://www.youtube.com/watch?v=W3KCLH9rNQo&w=470]
| 13
| 13
|
[
{
"comment_id": "401785",
"author": "Darkstar",
"timestamp": "2011-06-04T22:26:32",
"content": "Holy crap, they’re still using good old Pioneer robots? We had these 10 years ago, and even then they were already old stuff. Might have to do with the fact that all of our robots had single-digit serial numbers but hey, we have 2011 by now and there are much better designs available-Darkstar",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401788",
"author": "Arjan",
"timestamp": "2011-06-04T22:47:39",
"content": "But then again… if it does the job…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401801",
"author": "Chris",
"timestamp": "2011-06-04T23:26:16",
"content": "Unless you’re research concerns low-level motion control or requires a cutting edge platform, there is no reason to spend your precious research dollars on the newest gadgets. I’d rather see older but adequate robots being used and have the savings go to pay for more graduate students to use them. Bravo on the interesting project.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401806",
"author": "somedude",
"timestamp": "2011-06-04T23:42:11",
"content": "i think something like roomba + kinect would be good for this sort of thingyou could make it recognise hand signals etc..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401819",
"author": "Pat",
"timestamp": "2011-06-05T01:04:40",
"content": "I want somethink to train pets same way like programming robots. (:",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401860",
"author": "Slegiar",
"timestamp": "2011-06-05T05:30:19",
"content": "all well and good, but when will this turn into K-9? still, a cool concept and neat to see the “following robot” idea took a few splits in how people researched it",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401872",
"author": "ColinB",
"timestamp": "2011-06-05T05:55:07",
"content": "Is anyone else thinking that training a pet is much more work than programming behavior directly in a programming language??",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401875",
"author": "pahosler",
"timestamp": "2011-06-05T06:14:00",
"content": "I tried to train my cat but the fraken fraker bit the frak out of me when I tried to plug in the usb cable!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401920",
"author": "Piku",
"timestamp": "2011-06-05T10:26:01",
"content": "Now they need to make the robot randomly stop, weave in front of you or pull you across the street to go sniff another robot’s rcharge point.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401958",
"author": "fileark",
"timestamp": "2011-06-05T14:41:32",
"content": "@Piku ROFL.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401986",
"author": "abobymouse",
"timestamp": "2011-06-05T16:18:22",
"content": "@ColinB – training allows semi-emergent behaviour. Programming requires a coder.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402041",
"author": "Pun",
"timestamp": "2011-06-05T18:42:43",
"content": "I wish I had the source code to my family’s dog.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "1102711",
"author": "pumper",
"timestamp": "2013-11-15T23:13:34",
"content": "txz",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,176.021182
|
||
https://hackaday.com/2011/06/04/canon-a70-ccd-replacementrepair/
|
Canon A70 CCD Replacement/repair
|
Mike Szczys
|
[
"digital cameras hacks",
"Repair Hacks"
] |
[
"a70",
"canon",
"CCD"
] |
Looking for an underwater camera setup, [Imsolidstate] picked up a Canon A70 and a Canon water-tight housing on eBay for around $45. Unfortunately the camera arrived with a non-functioning CCD. Another trip to the online auction site landed him
a replacement CCD which he set about installing
.
We have this exact model of camera with a cracked LCD display. Being that we like to hack around on things we’ve pulled it apart in order to replace the screen and believe us, there’s no extra room inside that thing. The video after the break shows the teardown, and you can see what a pain it is to get the unit apart. That process in only eclipsed in difficulty by the reassembly itself.
In the end it wasn’t a problem with the CCD itself, but with the connector on the PCB that received the flat cable. It wasn’t holding the contacts tight, but [Imsolidstate] fixed that with a strategically placed piece of foam.
[youtube=http://www.youtube.com/watch?v=9Znno5MhP2k&w=470]
| 19
| 18
|
[
{
"comment_id": "401768",
"author": "macpod",
"timestamp": "2011-06-04T21:21:40",
"content": "I used to own this camera model. Now it’s part of harford hackerspace’s roto-photo setup:http://harfordhackerspace.org/2010/11/haha-wins-first-place/The picture quality was ok for it’s time, but what a horrid battery-sucking vampire it was…Canon held a recall on some of these cameras because when left in a hot environment like a car, the cmos (or perhaps this connector) melted and detached. I believe you can still take advantage of this recall program if you happen to suffer from this issue. In my case, it put a bunch of lines through the image and gave what was visible a tan/purple hue.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401784",
"author": "Parker",
"timestamp": "2011-06-04T22:17:10",
"content": "Umm I think you have the wrong video. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401799",
"author": "The Ideanator",
"timestamp": "2011-06-04T23:20:35",
"content": "Nice video, informative for a noob, but I see no resemblance to a camera fix in it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401802",
"author": "carbinefreak",
"timestamp": "2011-06-04T23:31:24",
"content": "Decent video, but i don’t think its relevant with the camera repair…….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401809",
"author": "NishaKitty",
"timestamp": "2011-06-04T23:59:12",
"content": "That’s one messy desk I wouldn’t be taking cameras apart on it >.>",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401820",
"author": "youtube link",
"timestamp": "2011-06-05T01:08:07",
"content": "Follow the link for the correct video..http://www.youtube.com/watch?v=9Znno5MhP2k",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401821",
"author": "strider_mt2k",
"timestamp": "2011-06-05T01:08:25",
"content": "The camera is a lie!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401825",
"author": "Will",
"timestamp": "2011-06-05T01:35:51",
"content": "@strider_mt2k Nooooo, the cake is a lie!Anyways, cool fix! And high-five for the video fail!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401832",
"author": "Can On",
"timestamp": "2011-06-05T02:07:09",
"content": "Great disassembly video. I had one of the cameras on thelistof affected Canon cameras. Was tempted to DIY, but sent it in because I was still within the eligible timeframe.Unfortunately for me, the jostling during shipping must have “fixed” the loose connector, because I received the camera back a couple of weeks later with a notice saying they disassembled it, fixed the problem, and sent it back to me, yet it failed in precisely the same way as it had when I sent it out.(I don’t fault Canon for this: I’d already proven to my own satisfaction it was a mechanical fault; flexing the camera fixed the problem for a few seconds. It was just bad luck that during shipping, the camera’s connector had been jostled into a “fixed” position when the Canon tech received it, found himself unable to reproduce the problem, and presumably declared it “fixed” before putting it back in the box. :)The reason I didn’t DIY was because theoriginal advisorysaid “connecting parts of the internal wiring of the CCD used in affected products may become disconnected, especially if the affected products are stored or used in high-temperature and high-humidity environments”, which I misparsed as “oh, some sort of chip-to-substrate binding problem that I can’t fix”, rather than just a routine crappy connection fault between a connector and a flexible PCB.I retired the camera with the idea of trying it some rainy afternoon, but never got around to it owing to the innumerable screws and flexible PCB bits surrounding the CCD, as well as the lack (at the time) of a good teardown.Thanks, Imsolidstate, for the inspiration to solve this problem and resurrect my old point-and-shoot cam. I can see why Canon decided to dissuade end users from attempting it themselves – never mind the flash cap, one fingerprint in the wrong place and the CCD is presumably toast.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401833",
"author": "Parker",
"timestamp": "2011-06-05T02:09:34",
"content": "Here is the video if anyone wants to seehttp://www.youtube.com/watch?v=9Znno5MhP2k",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401850",
"author": "cutandpaste",
"timestamp": "2011-06-05T03:41:00",
"content": "Someone needs to teach that guy the joys of a magnetic screwdriver.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401938",
"author": "bothersaidpooh",
"timestamp": "2011-06-05T13:22:20",
"content": "Anyone run into this problem with the Fujifilm Finepix series?I have one here with obvious blue lines on the CCD on the top third of the picture.had a look online but the CCDs seem to be made of unobtainium..thanks!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1812891",
"author": "shamik",
"timestamp": "2014-09-11T17:46:18",
"content": "yeah..my Fujifilm finepix L55 is suffering..need some help!!",
"parent_id": "401938",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "401977",
"author": "dmcbeing",
"timestamp": "2011-06-05T15:42:00",
"content": "The second video has the dude from the Shop Lighting post :D.On the Camera hack,its quite impressive how the build those things :D.Equally impressive how he disassembles it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402167",
"author": "Life2Death",
"timestamp": "2011-06-06T06:01:51",
"content": "I have beat the crap out of my Sony (only sony things i will ever buy are cams) and my Nikons.The nikon SLR series has been through a war, I think thats enough for me. I take them in -40’F weather drop them in the snow, mosh pits in metal shows full of sweaty, beer flying events. Into the sand during tractor pull shooting…Lame.I love imsolidstate though, awesome hacks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402181",
"author": "herhor",
"timestamp": "2011-06-06T08:32:04",
"content": "Canon was replacing CCD for this camera (an other models) for free even long after warranty period. There was a problem with CCDs in many Canon cameras.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402286",
"author": "Xb0xGuru",
"timestamp": "2011-06-06T16:22:23",
"content": "I have the A85 which suffered the same problems with the CCD. I contacted a local Canon authorised repair centre and they fixed it for free. I still get the odd line so not 100% sure if it’s been replaced with a new one :s.I did a teardown on it first and with the help of an online service manual, managed to piece it back together :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "423002",
"author": "George",
"timestamp": "2011-07-26T08:32:12",
"content": "Sorry folks, this video contains some not really nececessary music (ahem) – and now we can`t have it in Germany – since it is blocked for lacking rights conerning that music!!! Could anybody upload another file without that music or give away another link than that one on youtube?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "3013252",
"author": "VincentTag",
"timestamp": "2016-05-07T02:18:12",
"content": "http://fds9923sdsd.coycbuf",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,176.295559
|
||
https://hackaday.com/2011/06/04/shop-lighting-weighing-cost-and-efficiency/
|
Shop Lighting: Weighing Cost And Efficiency
|
Mike Szczys
|
[
"home hacks"
] |
[
"ballast",
"fluorescent",
"led",
"qtp4x32t8",
"t12",
"t5",
"t8"
] |
[Ben Krasnow] wanted to upgrade his shop lighting but before he made any decisions he decided to educate himself about the options that are out there. Luck for us, he shares
the facts about different lighting in terms of cost and efficiency
.
His old setup uses fluorescent light fixtures with T12 bulbs. These are rather bulky and inefficient bulbs. Many folks, ourselves included, would think of LED as a logical replacement. [Ben] started by looking into the various high-intensity LED modules that are available. He grabbed a catalog and started doing a couple of different calculations to compare Lumens/dollar for the upfront cost, and Lumens/Watt for the operational costs. Hands down, newer fluorescent bulbs come in cheaper on both counts and provide a wider spectrum of light.
The next decision was between purchasing the newer T5 bulbs which are rated at very high efficiencies, or to go with T8 bulbs which are better than the T12 standard but can use the same fixtures. After doing some digging he found that T5 is not much more efficient than T8, but they use an electronic ballast to boost efficiency. He ended up replacing his old magnetic ballasts with electronic ones to get high T8 efficiency at a cost that was lower than buying new T5 fixtures.
See [Ben’s] own recount of this process in the clip after the break.
[youtube=http://www.youtube.com/watch?v=UQ7BIyEd89U&w=470]
| 29
| 28
|
[
{
"comment_id": "401748",
"author": "andrew",
"timestamp": "2011-06-04T20:16:10",
"content": "This is how “going green” should be done. Bravo",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401754",
"author": "daniel",
"timestamp": "2011-06-04T20:32:45",
"content": "I did some looking into efficiency and lifetime for fluorescent tubes a couple of years ago. Something that I noticed is that Philips only gave longevity figures for 8 hours of operation per day, turning on and off only once per day.My suspicion is that power cycles dramatically decrease the life of these lights. In certain situations (bathroom lights, break-room lights) is it better to have LED or even incandescent, considering the degree to which long life is important to the cost-effectiveness of fluorescent?If anyone has further insight or info, I would love to check it out.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6312973",
"author": "GDUPTREEDUP",
"timestamp": "2021-01-18T18:18:49",
"content": "First of all the lumen output of the calculation is great for lighting a room and sure spectrum is ok but plants don’t grow with lumen or lux. Since it is now 2021 with the technological advances and innovation in led and understanding about spectrum and what plants need to successfully grow and develop properly it’s a total different calculation. It’s measured by PPFD,PAR UMOL",
"parent_id": "401754",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "401758",
"author": "Tim",
"timestamp": "2011-06-04T20:43:19",
"content": "Putting up some Sheetrock on the ceiling and painting it white would go along way also.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401761",
"author": "Hackerspacer",
"timestamp": "2011-06-04T20:46:24",
"content": "LEDs are much better. Unfortunately, for the time being at least, they are much more expensive.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401762",
"author": "Zee",
"timestamp": "2011-06-04T20:49:28",
"content": "The flicker free and hum free is what sold me",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401763",
"author": "ss",
"timestamp": "2011-06-04T20:49:57",
"content": "Great video and information! Great job! Thanks for sharing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401766",
"author": "Chris",
"timestamp": "2011-06-04T21:07:39",
"content": "What Ben neglected to consider in his comparison is reflector efficiency and restrike. No matter how much light is produced, it’s useless unless it reaches its destination.T5’s can use mirrored reflectors that reflect light more efficiently than white surfaces. They also have optimized shapes, which direct light that bounces off the reflector around the bulbs, thus minimizing restrike (light lost due to hitting the bulb).T8’s could also use mirrored reflectors, but due to the wider bulb, the reflectors would also have to be scaled up proportionally to a size which is considered impractical for most fixtures. So instead we see only the simple, white, inefficient reflectors in commercial products. (Although there is potential for making DIY T8 reflectors if you’re so inclined, I’ve toyed with the idea of building scaled up T5 designs inexpensively with cardboard and mylar.)So while T5’s are not significantly more efficient by themselves, the reflectors they can be paired with make them much more efficient in practice. Good reflectors will set you back some money, but the energy savings will pay for them in due time. *Especially* if you air condition the lighted area, because more efficient lighting means you need less wattage, so there’s less heat the AC just has to pump back out of the room. Here in the Deep South that’s a nice double-whammy.Of course, LEDs need no reflectors and have zero restrike, so they an even bigger efficiency bonus in practice that you will not see by comparing numbers in a catalog. Although their initial expense and spectrum leave something to be desired, as Ben correctly noted. In my opinion it’s wise to hold off on them for a few years longer and see how they develop.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401775",
"author": "Hackerspacer",
"timestamp": "2011-06-04T21:50:26",
"content": "WTB: Cheap, durable, efficient solar cells and LED lights. It’s always “just around the corner”.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401783",
"author": "supershwa",
"timestamp": "2011-06-04T22:12:32",
"content": "Funny..at first glance, I saw “Shop Lifting” in the title…On the subject, I personally have 2 ballasts each with 2 T8s in the garage…incandescent bulbs in the basement. LEDs would be nice, except the damn things are still too expensive.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401793",
"author": "asto",
"timestamp": "2011-06-04T23:04:15",
"content": "I replaced the fluorescent lights on the stairs of my building with LEDs. The light is acceptable even if the plastic of fixture absorb much light. My neighbors are happy and it’s possible to change color and start a light game with a simple IR remote. What fluorescent light can do the same ?NB : fluorescent light contain mercury (Hg) but only few people know.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401803",
"author": "grovenstien",
"timestamp": "2011-06-04T23:34:59",
"content": "You can buy T12 to T5 adapters now! They clip onto the ends of a T5 bulb and then fit older T12 fittings.http://saveiteasy.co.uk/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401805",
"author": "tantris",
"timestamp": "2011-06-04T23:40:41",
"content": "leds and modern fluorescents are very comparable when it comes to lumen/watt. leds are more easily dimmable but commercial fixtures are often under-powered and not sufficiently cooled.the efficiency and lifetime in the datasheets are given for 70F, at higher temperature both is significantly less, a 90+ lumen/watt led might only give you 80. trying to design them as light bulbs (a design optimized for minimal heat loss) makes it even worse.i would go with leds for directional lighting, spot lights, or dimmable -and add lots of aluminum surface area. for general lighting fluorescent is the cheaper and equally efficient solution.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401807",
"author": "Standard Mischief",
"timestamp": "2011-06-04T23:50:27",
"content": ">WTB: Cheap, durable, efficient solar cells and LED lights. It’s always “just around the corner”.A service station around here had the lights on their fuel island retrofitted from fluorescents to LEDs. It looks as though at least in some cases, there’s an acceptable payback time (although odds are that there’s a fscking government subsidy in there somewhere fscking up the market signals).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401814",
"author": "Tomasito",
"timestamp": "2011-06-05T00:30:22",
"content": "Another option is to use electromagnetic induction fluorescent lamps.They are electrode-less, making the bulb theorically everlasting. They fail only if the electronics fail.And are very efficient too.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401848",
"author": "John",
"timestamp": "2011-06-05T02:57:38",
"content": "Take it from someone that works in the lighting industry, cheap T5 ballasts screwed to painted white 1×4 boards and $.50 sockets on bent brackets work like a charm. (Just don’t forget to add a “ground” wire below the entire length of both bulbs or else they won’t strike) In an unfinished basement, they blend rite in. The decrease in performance over ideal $100-$500 fixtures is quite acceptable if only used a few hours a day (it is a shop rite?). Just for god sake, replace all the incandescent bulbs down there.Regarding number of re-strikes, it is a function more of the ballast than the bulb and new electronic ballasts are all pretty good. GE specks 10,000 re-strikes on their bulb/ballast combo with only nominal decrease in output. If you burn out a 20,000 hour bulb in you shop, you either need “real” lighting anyway, or need to get better about turning the lights off.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401849",
"author": "macona",
"timestamp": "2011-06-05T03:27:58",
"content": "I used to do commercial lighting retrofit and service. First you need to differentiate, there are two kinds of T5. Standard output T5 and High Output T5. There is a significant difference in output.T5HO is not necessarily more efficient, but you have much more light per tube which gives you all sorts of options. A standard 4 foot (Actually shorter, metric size) lamp is 54 watts, darned near double what a T8 is.There is one other thing. Virtually all T5HO fixtures use programmed start ballasts that preheat the filament before igniting the lamp. Virtually all T8 ballasts are instant start ballasts where they just put high frequency voltage to the pins on the end and ignite them that way. The problem with this is if you turn your lights on and off more than one or two times a day the lamp life is significantly reduced. You will soon see black ends on the lamps and the lamps fail. Programmed start ballasts, like the ones that are on T5HO’s, eliminate this issue.T5HO has one other feature, the lumen drop over time is less than T8 and Metal Halide. You can get about 2 years out of a T5HO lamp, 8 hours a day, before the output is getting poor.I have used T5HO’s quite a bit at home. I have a 4 lamp F54T5HO fixture in by lab and I used to use 6 F54T5HO lamps in my 120 gallon salt water tank.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401854",
"author": "Oren Beck",
"timestamp": "2011-06-05T04:18:48",
"content": "Total cost of “Ownership” is the overview.We can hack up whatever kipple around us into something that makes light. And some good work’s been done by Hackers willing to prove that the commercial manufactured shite is shite BY DESIGN.After all, we’re often interested in building something that our grandchildren’s kids will still be using. Or at least, be so visually stunning that the grandkids will be influenced by it:} The fact of our Hacks being built to last is a bonus point multiplier..Call that Hacking against planned failure?@Tomasito:Those Induction Lamps were/ARE “too good” and essentially scared the Gehenna out of several industries! Look at how much white sign neon is still alive after many decades for proof that yes, gas tube lights can last a long,long time.The supreme shame of many mass market/commercial designs is that for a trivial percentage of difference, we could make things that truly *LAST* and work better too. Those Neon signs are proof that we used to.I’ve contemplated digging out my notes on induction driving depleted cathode “circlines” in a Wrapped Toroid topology. Envision a Toroid coil where the “core” is a Circline lamp. My prototypewas an 8 or so inch diameter tube excited by 25W of 27 mhz RF. NOT a winner for daily use, but good as concept proof.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401891",
"author": "richms",
"timestamp": "2011-06-05T08:04:28",
"content": "Not seen a T12 in the wild here for about 20 years. Thought that everyone had swapped out to T8’s by now.Anyway, the issues I have had with cheap T8 fixtures is the ballasts just die on them. With the electricans always wanting cheaper, cheaper cheaper its not uncommon to see magnetically ballasted T8’s with starters still going in for new installations, when T5’s with controlled ballasts would easily have a repay time of under 1 year.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401924",
"author": "Stoneshop",
"timestamp": "2011-06-05T10:51:09",
"content": "This sentence ” After doing some digging he found that T5 is not much more efficient than T8, but they use an electronic ballast to boost efficiency.” suggests that T8 come with conventional ballast as standard, and T5 have electronic ballast.Around here I have all kinds of fixtures, including T5 with conventional, and T8 with electronic (instant-start and programmed). No retrofits; they came from the manufacturer like that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401931",
"author": "richms",
"timestamp": "2011-06-05T11:46:41",
"content": "Wasnt aware that T5 with magnetic ballast was a permissable combination? Certainly not seen any here like that.Plenty of confusion between T5 and T5HO about tho. Many people getting cheap 28w lighting store fixtures and then finding that a 54W lamp wont work in them for their aquarium.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401941",
"author": "earl",
"timestamp": "2011-06-05T13:33:53",
"content": "I’m an electrician, and we do lighting retrofits all the time. As of right now, the T8 is so much more common place that the lamps have commodities pricing which is hard to beat. There are many different versions of T8s, (most common is a 741, but upgrading to an 841 gives you a boost in lumens.) Almost all of our retrofit jobs consist of replacing old fixtures (T12s or Metal Halide) with new T8 841 lamps. The new fixtures have a large mirrored reflector, and everyone has been extremely happy. With some rebates from the power company, retrofit payback periods are coming in at 1-2 years only. It’s a no brainer.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401949",
"author": "Helgi",
"timestamp": "2011-06-05T14:01:41",
"content": "This light discussion needs to be separated into Bulbs, Ballasts and Lamps.Bulbs: (Create visible light)T12, T8 and T5 bulbs are all the same design so they should theoretically have the same efficiency. The only difference between types is the length and the diameter. Smaller bulb has less room for gas inside the bulb, and less glass for coating on the inside (Fluorescent bulbs create light by shooting electrons through gas inside the bulb, the coating on the inside makes the light visible, different coatings give different “color” of light). Since the gas and the coating break down with usage, the smallest bulbs (T5) should start dimming sooner than the other ones. And since they have less gas and coating, they should give less light, when new, than same length T8 or T12. There are some High Output or Long Live bulbs that use the same technology but more expensive gas and coating. These differ from one bulb manufacturer to another.I was in charge of lighting in the building of a previous employer. My experience on my job, where part of the building had the same type of lamps, some using T5s and other T8s, was that the T5 bulb lamps are generally dimmer than the same lamp with T8 bulbs. The difference becomes easily noticeable with bulbs that are couple of years old. There are also unbelievably obvious differences in quality between bulb manufacturers.Ballasts: (control bulbs)The electronic ballasts do make a huge difference in lifetime of the bulbs. They usually make less noise. The electronic ballasts themselves have limited lifetime. They’re quite often hard to replace so you have to replace the whole lamp should the ballast break down.Lamps: (direct light from bulbs to objects)Lamps have different characteristics and each has huge effect on the efficiency of the lighting. For hanging or ceiling lamps. Lighting that is directed straight down is most efficient but “softer” lighting that is reflected down from ceilings has positive effect on peoples moods and health.Leds: (create visible light)Have no ballasts, as such, but often have electronic circuits to control the light.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401983",
"author": "ynp",
"timestamp": "2011-06-05T16:07:06",
"content": "well this sure is timely. we’re building out a new shop and have been dealing with this exact issue. using T12s to light the shop right now, but also went out and bought a little T5 fixture for the special garden plants. interesting learning more than just ‘T5 is brighter’.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402040",
"author": "metis",
"timestamp": "2011-06-05T18:37:27",
"content": "@ helgioverall you’re a little off, macona and John nailed it though. the smaller lamps are (in theory) made to higher manufacturing tolerances with more precise and particular phosphors in them, so your assessment of t12 v t8 v t5 while anecdotal, is incorrect.industry standard terms are:lamp: the chunk of stuff that produces light, be it the LED diode, or the florescent tube, and any stuff that comes along with it as one unit. i.e. in CFLs the “lamp” includes the ballast, as the whole package screws into the fixture.ballast: the widget between power source and lamp that gets the power to the lamp in a way that makes it illuminate properly in lamps that require a “strike”, not to be confused with dimmer, power supply, or driver, which vary the power supplied to vary light out put via a variety of measures. you can have a dimming ballast, but that does not make it a dimmer.fixture: the thing you shove the lamp into, which holds the lamp where you want it, which may or may not have the ballast, or other things included in it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402325",
"author": "steve",
"timestamp": "2011-06-06T18:05:19",
"content": "Thanks Ben. Really nice and informative vid!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402362",
"author": "foo",
"timestamp": "2011-06-06T20:25:20",
"content": "This analysis doesn’t seem to take into account ballast/transformer efficiency. The watt rating is how much power the bulbs themselves use. You can cook an egg on some T8 ballasts.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402702",
"author": "Helgi",
"timestamp": "2011-06-07T17:42:55",
"content": "@Metis.I may not have the English name 100% correct but I still say that T5, T8 and T12 all work in exactly the same way and smaller bulbs (lamps) last for shorter periods before becoming dimmer. :DI also say that the difference between same size bulbs (lamps) between different manufacturers is huge.And if the electronic ballast breaks down, which happens a lot more often than the old style “brick” ballast and separate starter, you often have to replace the whole lamp (fixture). I’ve often had to replace electronic ballasts in lamps (fixtures) that were only couple of years old.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "457585",
"author": "john",
"timestamp": "2011-09-17T14:11:46",
"content": "I have replaced bulbs a few times myself. The main thing to consider at all times is how close to pure sunlight is the output of the fl bulb. The ones which do have better purer output have always been available but at a slightly higher cost. They aren’t quite 6500K’s but dern close. Regardless of the fixture (not the ballast of course) these are well worth it, easier on the eyes, and have a notably improved output. If you call the right people, all the manufacturers can & will mail you a complete bulb catalogue-phillips, ge, sanyo etc. The objective of any std light source is to try and mimic sunlight. All else is pie in the sky.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,175.969984
|
||
https://hackaday.com/2011/06/04/help-2600-magazine-compile-a-list-of-dates-for-their-hacker-calendar/
|
Help 2600 Magazine Compile A List Of Dates For Their Hacker Calendar!
|
Jeremy Cook
|
[
"News"
] |
[
"2600"
] |
2600, the magazine familiar to many as a preeminent hacking quarterly, is
publishing a calendar
. While, according to the
2600 site
, most calendars only mark holidays, 2600 intends to “provide as complete a guide to milestones in the hacker world as humanly possible.” Not an easy task considering that, depending on your definition, hacking could extend to the discovery of fire, or at least the wheel.
2600 gives some examples in which they only list events back to March 3, 1885, when AT&T was founded. If this example is followed, that “only” gives one 126 years to work with, but compiling a full list of hacking dates is still a daunting task. If you can think of any dates worthy of consideration, email them to:
calendar@2600.com
. We think maybe September 5th, 2004 might be a notable date to include. We’ll leave it up to figure out what that date is, in case it wasn’t painfully obvious.
| 12
| 12
|
[
{
"comment_id": "401734",
"author": "anon",
"timestamp": "2011-06-04T19:14:17",
"content": "+1 for inclusion of 5 Sep, 2004!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401738",
"author": "somedude",
"timestamp": "2011-06-04T19:28:07",
"content": "june 4 2011 the day not a single fuck was given",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401742",
"author": "Gar",
"timestamp": "2011-06-04T19:35:08",
"content": "What no link ?http://hackaday.com/2004/09/05/radioshack-phone-dialer-red-box/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401744",
"author": "tjb",
"timestamp": "2011-06-04T19:44:48",
"content": "November 5th 1955",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401747",
"author": "Reckless",
"timestamp": "2011-06-04T20:05:53",
"content": "Someone’s going to have to explain the significance of 5th Sept 2004 for me. Google isn’t turning up much!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401751",
"author": "Ren",
"timestamp": "2011-06-04T20:26:52",
"content": "Well, there’s January 1st, then January 2nd, followed by January 3rd…Hmmm, you’d think hackers could write a script to list all the days of the yearB^)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401764",
"author": "God Mode Enabled",
"timestamp": "2011-06-04T20:58:32",
"content": "Aw man, I was an engineering student in college and it was the 2nd week of my sophomore year..And hackaday came into my life 9/5/2004 with:[http://hackaday.com/2004/09/05/radioshack-phone-dialer-red-box/]",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401778",
"author": "CH",
"timestamp": "2011-06-04T21:52:46",
"content": "The day the robots fought back.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401779",
"author": "Gravis",
"timestamp": "2011-06-04T22:04:28",
"content": "i give up, what happened on September 5th, 2004?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401790",
"author": "gizmo",
"timestamp": "2011-06-04T22:57:31",
"content": "09/05/2004 definitely worthy!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401810",
"author": "filespace",
"timestamp": "2011-06-05T00:04:17",
"content": "wiki started",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401811",
"author": "filespace",
"timestamp": "2011-06-05T00:06:39",
"content": "just kidding… HAD is soo much more informative than wiki.,,,,,",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,176.391703
|
||
https://hackaday.com/2011/06/04/build-your-own-panoramic-pinhole-camera/
|
Build Your Own Panoramic Pinhole Camera
|
Mike Nathan
|
[
"classic hacks",
"digital cameras hacks"
] |
[
"3.5mm",
"camera",
"photography",
"pinhole"
] |
While it seems that the digital camera is king, some people still love shooting with good old 35mm film – [Costas Kaounas], a high school teacher and photographer certainly does. He recently published plans for
a great-looking 35mm pinhole camera
over at DIY photography that we thought you might enjoy.
[Costas] put together a set of simple hand-drawn plans for the camera, that you can easily replicate with a bit of free time. The camera is built mostly from card stock, both in 1mm and 3mm flavors, also incorporating popsicle sticks and an aluminum can. The popsicle sticks are used to create a manual shutter for the camera, while the pop can is used to form the pinhole aperture.
It’s a pretty simple hack as you can see, with nary an electronic part to be found. It will take you a bit of time to construct however, since you’ll need to let the glue dry between certain steps.
Love it or leave it, you’ve got to admit that the panoramic shots it takes are pretty nice!
If we’ve piqued your interest in pinhole cameras, be sure to check out this
Lego pinhole camera
as well as this
beer can pinhole camera
.
[via
Lifehacker
]
| 3
| 3
|
[
{
"comment_id": "401733",
"author": "Daniel",
"timestamp": "2011-06-04T19:13:43",
"content": "Yes this is copied from the site, but it’s a comment i made and i’ve tidied it up.If you don’t feel like making the whole camera from scratch an old 6×9 (6×6 would work as well but not as dramatically) medium format folding camera is a good candidate. You can normally find them cheap on eBay or a car boot sale (flea market is the American term i think); since you don’t need the lens or a working shutter you shouldn’t have to spend a lot, even go out of your way to find a broken one.* Remove the lens, and struts holding the bed to the body, use some sturdy pliers to twist and pry them off.* Keep the bellows if they are in decent condition.* Drill a hole in the center of the front lid for the pinhole lens, you can buy pinholes or make one.* Close the lid and stick it in place to the body with tape, blu-tack or glue etc.* If you kept the bellows stick them around the pinhole for extra light proofing.Tricky part is making a good shutter, though you can just use a piece of tape as a shutter if you want. I found this page with links to various shutter designs for pinhole cameras,http://home.online.no/~gjon/pinhole_shutters.htmNow you have a very wide angle pinhole camera.If you however don’t want to use medium format film you can make some 35mm cassette holders for medium format cameras from old 120 spools (i found Fuji spools work best for this), stick them in the back and you have wide angle, panoramic 35mm camera, takes 24x90mm shots on a 6×9 body; and you can still use it with medium format as well if you want.I think you can buy the 120 to 35mm cassette things but i made them, not my image but you can do it like this,http://www.flickr.com/photos/nefotografas/3361366374/sizes/o/in/photostream/Though if you want a panoramic without the wide angle you can just use the 120 to 35mm converter spools in a medium format body without any modification to the camera.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401756",
"author": "Mark",
"timestamp": "2011-06-04T20:35:35",
"content": "I’ve mad pinhole cameras from oatmeal boxes, as this guy did here:http://users.rcn.com/stewoody/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401829",
"author": "cmholm",
"timestamp": "2011-06-05T01:57:10",
"content": "I still shoot 35 on occasion, and this is ‘way too straightforward a project to pass up. With my wife’s crafts stockpile, I can pretty much get started without need to leave the house.Thinking ahead… now that we’ve got so many thrashed point-n-shoot digitals lying around, can this project also provide a body for a next-gen multi-ccd pinhole panorama? Just for starters, the inability to butt the sensors against each other is an issue. I don’t know if there’s enough of a parallax problem for more distant subjects that you couldn’t “solve” the sensor gap by stacking several bodies, each with a sensor to placed to cover a different fraction of the arc. Or, would the images not be able to stitch cleanly?",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,176.344049
|
||
https://hackaday.com/2011/06/04/two-kinnects-plus-one-hd-projector-makes-the-coolest-snowglobe-ever/
|
Two Kinects Plus One HD Projector Makes The Coolest “Snowglobe” Ever
|
Jeremy Cook
|
[
"Kinect hacks"
] |
[] |
Looking for something to replace the flat screen display that was amazing in your house ten years ago? How about a circular
display similar to a snowglobe
(crystal ball?) that will display the image you are watching correctly no matter at what angle you view it.
This amazing student project from Queens University combines elements that many hackers are familiar with, including: Kinect sensors, a 3-D projector, and a giant acrylic sphere. Actually, most people have never worked with a giant acrylic sphere, but they look like fun. Check out the video after the break.
[youtube
http://www.youtube.com/watch?v=43D4QJe9vqM&w=470%5D
The resulting display is a “pseudo-3D” image in that what you see is not presented in three dimensions, but appears to be. The Kinect tracks a user’s position and adjusts the view accordingly. Additionally, hand gestures can be used to zoom the object in or out, rotate the object, and change the object to something else. If you like this, be sure to check out this
“People-tracking orb”
using some similar technology.
| 10
| 10
|
[
{
"comment_id": "401694",
"author": "Bob",
"timestamp": "2011-06-04T16:34:12",
"content": "HAD… When everything is amazing then nothing is. Please explore other adjectives when describing interesting and evolutionary, not revolutionary, items. The word is, like, overused. Thanks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401700",
"author": "Zee",
"timestamp": "2011-06-04T17:03:00",
"content": "Masters CANDIDATE? What is that?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401715",
"author": "mason",
"timestamp": "2011-06-04T17:35:28",
"content": "HD or 3D?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401720",
"author": "eni_",
"timestamp": "2011-06-04T17:51:49",
"content": "…Cylinder?http://www.youtube.com/watch?v=UniqFEMls8M#t=0m22s",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401722",
"author": "DrMacinyasha",
"timestamp": "2011-06-04T17:54:50",
"content": "Reminds me more of a Goa’uld long range visual communication device than anything else.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401757",
"author": "bothersaidpooh",
"timestamp": "2011-06-04T20:40:26",
"content": "@DrMacinyasha LOL! Yeah, this occurred to me as well.What next, a radio controlled walking Asgard ‘bot? Would make a great prank for Halloween 2011 :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401760",
"author": "JeremyC",
"timestamp": "2011-06-04T20:46:00",
"content": "@mason – both HD and 3-D according to the article.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401774",
"author": "Nick Short",
"timestamp": "2011-06-04T21:47:54",
"content": "Zee:When pursuing a Masters degree, you are referred to as a Candidate until you get the degree. It’s “awarded” to you upon completion of your program. You should actually stop by a university and observe a graduation ceremony for Masters Candidates. It’s pretty interesting.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401925",
"author": "Max",
"timestamp": "2011-06-05T10:52:24",
"content": "Oh, but this is obviously a Palantír…Jokes aside, nice gimmick – in a sort of presentation kiosk sort of way (for just one person though). However, it has the same problem as most “novel” input technologies – so far, nothing beats a few clicks of a mouse in convenience of handling data, especially not having to constantly use your hands or entire body to do it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401947",
"author": "eni_",
"timestamp": "2011-06-05T13:57:00",
"content": "@Max:I’m afraid you’re right, until we find a truly more efficient (and, importantly, convenient) way of processing and controlling data, these kinds of devices will merely be a gimmick.Of course, all that needs to be done really, is for a very accurate form of Kinect to be developed, wherein it captures and uses the movements of just the fingers of your preferred hand.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,176.442111
|
||
https://hackaday.com/2011/06/04/amazing-3d-telepresence-system/
|
Amazing 3d Telepresence System
|
Mike Nathan
|
[
"Kinect hacks"
] |
[
"3d",
"Kinect",
"telepresence",
"tracking",
"video"
] |
It looks like the world of Kinect hacks is about to get a bit more interesting.
While many of the Kinect-based projects we see use one or two units,
this 3D telepresence system
developed by UNC Chapel Hill student [Andrew Maimone] under the guidance of [Henry Fuchs] has them all beat.
The setup uses up to four Kinect sensors in a single endpoint, capturing images from various angles before they are processed using GPU-accelerated filters. The video captured by the cameras is processed in a series of steps, filling holes and adjusting colors to create a mesh image. Once the video streams have been processed, they are overlaid with one another to form a complete 3D image.
The result is an awesome real-time 3D rendering of the subject and surrounding room that reminds us of
this papercraft costume
. The 3D video can be viewed at a remote station which uses a Kinect sensor to track your eye movements, altering the video feed’s perspective accordingly. The telepresence system also offers the ability to add in non-existent objects, making it a great tool for remote technology demonstrations and the like.
Check out the video below to see a thorough walkthrough of this 3D telepresence system.
[youtube=http://www.youtube.com/watch?v=OOy-Dnr3xyU&w=470]
| 22
| 22
|
[
{
"comment_id": "401655",
"author": "Serountree",
"timestamp": "2011-06-04T14:26:21",
"content": "Holodeck 0.1 program ready?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401663",
"author": "marks256",
"timestamp": "2011-06-04T15:11:14",
"content": "That’s cool!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401664",
"author": "Tropica",
"timestamp": "2011-06-04T15:12:16",
"content": "As of right now the picture quality looks like crap, but damn that idea is fucking awesome! Keep up the good work",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401666",
"author": "cpmike",
"timestamp": "2011-06-04T15:16:21",
"content": "Wow awesome!! The effect reminds me of a real-life Portal opening..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401668",
"author": "h3po",
"timestamp": "2011-06-04T15:20:20",
"content": "they should consider coupling the dof sensors with some better cameras. their efforts in improving the depth map look pretty good (compared to the other projects out there), but the texture quality is very disappointing with the cinect webcam.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401681",
"author": "sun god",
"timestamp": "2011-06-04T16:01:48",
"content": "2:08 and the credits are the real money shots. Point Of View with the cardboard cut out head says alot.This reminds me of the living room with virtual walls made of lcd TV’s, and human tracking.http://hackaday.com/2010/04/16/virtual-windows-that-track-a-viewers-position/When someone does THAT with a Kinect and a Big screen tv (Projector) then I’ll go out and buy a kinect. I wanna feel Like i’m in orbit around Saturn !!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401682",
"author": "Tea@ict",
"timestamp": "2011-06-04T16:06:52",
"content": "It really is time for a high resolution Kinect or something that works like that.I think it will eventually come, but we’ll have to wait something in the range of 5 to 7 more years (unless a competitor puts some pressure on Microsoft).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401685",
"author": "ITIL Prince",
"timestamp": "2011-06-04T16:12:25",
"content": "@h3p0 That’s a great idea. Kinect is good at depth mapping but is not a great camera. Marry two things together and create a better, third one.I’m impressed by how far they’ve come in a short time, so I’m relatively confident they’ll do more soon.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401697",
"author": "jeicrash",
"timestamp": "2011-06-04T16:44:49",
"content": "drop the price of the kinect by 50% and soon we can play halo without a controller. Very cool guys, keep it up.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401710",
"author": "wardy",
"timestamp": "2011-06-04T17:09:26",
"content": "Apparently you can use Kinect to play video games with too. Imagine that. I guess MS were a bit off the mark with their target audience.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401721",
"author": "Gravis",
"timestamp": "2011-06-04T17:53:22",
"content": "while this is cool and all, the quality is low, the hardware cost is high and the tech for it is patented. stereoscopic cameras have significantly higher quality and are _designed_ to measure depth without having to compensate for parts of the image lacking. in short, it’s an interesting idea but not practical at all.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401755",
"author": "ENKI-][",
"timestamp": "2011-06-04T20:33:46",
"content": "If it doesn’t have any actuators, it hardly counts as telepresence. Although technically impressive, this is better termed “3d-rendered video chat”, not telepresence.I could see this having quite a bit of utility in AR applications, but you would expect AR applications to have much of the hardware that this project duplicates with software (head-tracking with accelerometers on head mounted stereo display hardware, for instance). To be fair, people using a system like this will not look like Geordie LaForge whenever they vid.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401818",
"author": "joedirt",
"timestamp": "2011-06-05T01:04:31",
"content": "A lot of pains, minimal gains.You tripled your video bandwidth requirements, and added computational overheads.Probably easier just to ask the other party to turn their head.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401834",
"author": "coral422",
"timestamp": "2011-06-05T02:10:06",
"content": "If live TV broadcasting would use that technology, that would be rockin’ awesome",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401857",
"author": "Brad",
"timestamp": "2011-06-05T05:17:37",
"content": "How long before this is used for porn/webcam sites?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401858",
"author": "Haku",
"timestamp": "2011-06-05T05:17:59",
"content": "Tropica expressed my sentimens almost exactly, the picture quality is like playstation 1 graphics, but the working concept is fricking amazing!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401926",
"author": "Max",
"timestamp": "2011-06-05T10:59:26",
"content": "Admirable achievement. Once it becomes mainstream, I’m sure it will be at least as popular as today’s video calling, which nobody seems to use, according to mobile operators.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401997",
"author": "Bob",
"timestamp": "2011-06-05T16:59:19",
"content": "How did they simultaneously use 4 Kinects, is it a shutter based system?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402035",
"author": "Thomas Wrobel",
"timestamp": "2011-06-05T18:19:26",
"content": "“stereoscopic cameras have significantly higher quality and are _designed_ to measure depth ”Thats not true at all. Steroscopic cameras are just meant to reproduce a 3D image for a human. All you get is two 2D images at known points. You can extract depth by looking for similiar points and triangulation, but theres many case’s where you have to completely guess. Surfaces the same colour as the behind, for example.The Kinect, or Ladar/Time of flight, or other “true” depth systems can deal with this fine – two colour cameras would be useless, however, as there isnt enough information to work with.Also, the hardware costs of 4 Kinects is actualy very small compared to any other hardware that could do the same thing right now.(which probably would involve lazers), thats why your seeing the Kinect used for so many projects, its because it is pretty cheap relatively speaking.“How did they simultaneously use 4 Kinects, is it a shutter based system?”Good question.You can polarize to get 2 working at once, so maybe a combination?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402163",
"author": "chris",
"timestamp": "2011-06-06T05:34:17",
"content": "Wait until the next kinect sensor is released by Microsoft. Might be a software update but I know down the road there will be a hardware revision 2 that’ll perform better. Just takes time =)Remember how much time passed from personal computers coming out until we have these advanced 3D graphics?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402179",
"author": "Eirinn",
"timestamp": "2011-06-06T08:28:59",
"content": "@Haku You’ve never seens playstation 1 graphics then.And yes the concept is amazing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402679",
"author": "gt",
"timestamp": "2011-06-07T17:02:38",
"content": "this kind of reminds me of the 3-d video sequences seen in minority report.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,176.499656
|
||
https://hackaday.com/2011/06/02/simple-vga-interface-for-tiny-fpga-boards/
|
Simple VGA Interface For Tiny FPGA Boards
|
Mike Nathan
|
[
"Video Hacks"
] |
[
"adapter",
"fpga",
"vga",
"video out"
] |
[devb] has been playing around with XESS FPGA boards for ages, and as long as he can remember, they have had built-in VGA interfaces. His newest acquisition, a XuLA FPGA board, doesn’t have any external parts or ports aside from a USB connector.
He needed to get video output from the board
, so he decided to build a VGA interface himself.
He prototyped a 512-color VGA interface board which worked just fine, but he thought it would be way too cumbersome to use for each and every project. To keep life simple, he designed a small PCB that integrates a VGA connector and all of the resistors he needed to get the signal from the FPGA. His boards plug directly into a breadboard, so only a handful of wires is needed to connect the FPGA to a monitor.
As you can see on his site, the adapter works quite well, allowing the FPGA to put out a crisp 800×600 image with little fuss. [devb] has also posted all of his design files on his site in Eagle format for anyone interested in replicating his work.
| 10
| 10
|
[
{
"comment_id": "401015",
"author": "THeOReos",
"timestamp": "2011-06-02T18:05:34",
"content": "why do all those build ups on breadbords look so nice here. mine are more like 5 diffrent cable colours and totally cluttered! :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401026",
"author": "DanJ",
"timestamp": "2011-06-02T18:41:56",
"content": "LOL! Me too THeOReos.Now just to come up with a cool idea that needs a FPGA. These boards look pretty neat.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401027",
"author": "hpux735",
"timestamp": "2011-06-02T18:45:04",
"content": "That does look really cool. $70 is pretty steep though…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401037",
"author": "Fili",
"timestamp": "2011-06-02T19:06:26",
"content": "It’s always better to have 5 different colors for the wires. It’s easier to track them down.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401045",
"author": "DanJ",
"timestamp": "2011-06-02T19:20:24",
"content": "Perhaps it’s all relative but $70 for a 200k gate FPGA and 8 MBytes SDRAM (plus supporting circuitry) doesn’t seem too pricey to me. You could probably fit a few soft arduinos in there. He has a cheaper version for $40.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401058",
"author": "nah!",
"timestamp": "2011-06-02T19:33:34",
"content": "It looks good because its a “beauty wire” for showing off",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401061",
"author": "makomk",
"timestamp": "2011-06-02T19:42:24",
"content": "Wait… rather than just buying a VGA connector, he sawed off the end of a $200 high-end FPGA board that had one on?! Wow.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401283",
"author": "Squonk",
"timestamp": "2011-06-03T09:26:14",
"content": "Even the wires match the VGA connector color!Compared to it, my protos really look like a kind of “Technicolor-Spaghetti-Mess”…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "403263",
"author": "Chuckt",
"timestamp": "2011-06-09T02:32:17",
"content": "Nice project. Just a couple of questions.Where is the zip file for the project? I looked and I don’t see it.The message board for the other project won’t let me post because the editor doesn’t open up on my screen.What is VGA connector part and where can I order it?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "516468",
"author": "electrocoder",
"timestamp": "2011-11-22T23:01:48",
"content": "beatiful. thank you.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,176.552493
|
||
https://hackaday.com/2011/06/02/vga-out-on-a-maple-board/
|
VGA Out On A Maple Board
|
Brian Benchoff
|
[
"Microcontrollers",
"Video Hacks"
] |
[
"cortex-m3",
"maple",
"microcontroller",
"vga"
] |
The team at Leaf Labs just released a new library to demonstrate the
VGA capabilities
of their Maple dev board. Although it’s only a 16 by 18 pixel image, it shows a lot of development over past video implementations on the Maple.
The
Maple
is a great little Ardunio-compatible board with a
strangely familiar IDE
. We’ve covered the Maple
before
. Instead of the somewhat limited AVR, the Maple uses an ARM running at 72MHz, making applications requiring some horsepower or strict timing a lot easier.
We’ve seen a few projects use the increased power, like a
guitar effects shield
. It’s possible the Maple could be made into a game console that would blow the
Uzebox
out of the water, but we’re wondering what hackaday readers would use this dev board for.
Watch the video after the jump to see how far the Maple’s VGA capability has come after only
a few months
, or check out Leaf Lab’s
Maple libraries
.
[youtube=http://www.youtube.com/watch?v=rT1eKLEvIvo&w=470]
| 8
| 8
|
[
{
"comment_id": "400923",
"author": "Mattster",
"timestamp": "2011-06-02T13:39:27",
"content": "Hmm a Commodore 64 emulator, Battlebot controller, guidance system for a rocket. Oh wait can’t do that else it would be a missle. Considering my old Nokia 3650 has a 50mhz Arm and plays some good games, this will be fun to play with.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400977",
"author": "John P",
"timestamp": "2011-06-02T16:07:44",
"content": "Ardunio?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401063",
"author": "Chris",
"timestamp": "2011-06-02T19:47:26",
"content": "The maple rocks. I’ve been playing with one and barely have use for all its mighty POWER. Instead of getting yourself another arudino, get a real maple and you won’t regret it. Am going to have to try out this VGA stuff soon..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401068",
"author": "MoJo",
"timestamp": "2011-06-02T19:56:46",
"content": "If you have a look on YouTube there are a few examples of ARMs generating video. Because you can use DMA to produce the output at high speed while keeping the CPU freed up you can get some good resolutions with minimal overhead.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401108",
"author": "poslathian",
"timestamp": "2011-06-02T21:12:18",
"content": "Mojo, IIRC this implementation was DMA free (used timers) – but you are definitely right. There is a VGA demo in the examples directory based on timers anyway.Would love to see DMA VGA!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401383",
"author": "Munch",
"timestamp": "2011-06-03T14:34:26",
"content": "Cool; however, using the Arduino’s SPI port, folks have produced higher resolutions. You can get the precision timing by ditching Sketch/C++ and writing some assembly language code. Counting cycles — its what real-time coding is all about.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401415",
"author": "RevAaron",
"timestamp": "2011-06-03T16:06:59",
"content": "It’s kind of neat, but the Propeller has been able to do all of this for ages. The Parallax’s Propeller Demo Board has VGA, PS/2 keyboard, and PS/2 mouse ports on board if you want to play with VGA right away. IIRC, the Prop’s VGA tops out at 1024×768.http://www.youtube.com/watch?v=jHx9Rm2v3V8",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401698",
"author": "ColinB",
"timestamp": "2011-06-04T16:46:35",
"content": "@poslathian wrote, “Would love to see DMA VGA!”Brilliantly done here:Thinner client using STM32 and NTSC monitor (HaD)(Link)",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,176.596934
|
||
https://hackaday.com/2011/06/02/snap-together-pcb-mill/
|
Snap-together PCB Mill
|
Brian Benchoff
|
[
"cnc hacks"
] |
[
"CNC mill",
"pcb"
] |
[Jonathan Ward] came up with the MTM Snap,
a snap-together pcb mill
as part of the Machines That Make group at MIT.
We covered [Jonathan]‘s
previous work
made out of half-inch plywood, but the new iteration of his PCB includes a clever snap-together mechanism instead of screws and bolts. Although the MTM Snap looks a lot like3d printers such as a reprap, the similarities end with the off-the-shelf stepper motors. Instead of using motor drivers and control electronics from a reprap, the project uses custom
stepper drivers
, controlled by a bare Arduino.
We’re really impressed with the results of the MTM Snap compared with what is possible on a reprap-derived milling machine like a
makerbot
or
wolfstrap
. We’re thinking that’s due to the mass of this project compared to the printed ABS parts of the ‘common’ 3d printers, but any MEs are more than happy to correct that notion.
Check out the video after the break to see the machine in action and a great view of the snap-fit mechanism.
[blip.tv ?posts_id=5080926&dest=-1]
| 26
| 26
|
[
{
"comment_id": "400884",
"author": "Sergio",
"timestamp": "2011-06-02T12:46:37",
"content": "I will be watching closely this project, it would be great to have my own CNC and having more options to choose is always wellcome!And this one seem ideal to create small PCBsI hope they will be offering soon a kit, at least the snap together frame :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400892",
"author": "Scott",
"timestamp": "2011-06-02T13:07:34",
"content": "This looks like something that would turn up in a Craftsman/Dremel mass-market catalog. It could be a real hit – I hope they run with it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400926",
"author": "Akoi Meexx",
"timestamp": "2011-06-02T13:52:42",
"content": "Likewise. Just make people supply their own steppers and milling motor, and that could really open up CNC for individuals looking to get started on their own.I want one. :p",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400928",
"author": "Reggie",
"timestamp": "2011-06-02T14:05:31",
"content": "I’m sure I saw this on engadget, the bom ends up being $658",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400957",
"author": "Hackerspacer",
"timestamp": "2011-06-02T14:49:27",
"content": "Wait…. what results? I watched the video and don’t see any. I just saw it moving around. How good is this thing? It has potential but where are the results?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400961",
"author": "xorpunk",
"timestamp": "2011-06-02T15:09:41",
"content": "I usually ignore these milling projects, but this is pretty impress and innovative.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400964",
"author": "ddt",
"timestamp": "2011-06-02T15:28:16",
"content": "Stiffness would be the correct wording, not mass. This mill’s increased stiffness improves the mill’s accuracy when subject to cutting forces. More Stiffness -> Less deflection under the same loading.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400973",
"author": "Isotope",
"timestamp": "2011-06-02T15:39:50",
"content": "Neat toy. Probably does a decent job milling PCBs and foam for mold making/casting, but certainly don’t expect it to be able to do real machining. The rigidity just isn’t there.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400990",
"author": "xorpunk",
"timestamp": "2011-06-02T16:41:15",
"content": "@Isotope: probably a good thing they don’t claim it can. It’s certainly the best PCB milling rig I’ve seen because of the clean design and portability.If they used a dense/heavy polymer and better motors they could do metals and wood too.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401003",
"author": "SpiralBrain",
"timestamp": "2011-06-02T17:05:40",
"content": "neat!would love to get my hands on this baby if they put this into production. I hope they do because milling machines are really very expensive to own.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401011",
"author": "pff",
"timestamp": "2011-06-02T17:48:44",
"content": "personally i think this is dumbthe difficult and expensive part of cnc is the precision, that means expensive drive mechanismsreprap is a failure because the whole point was you could build one and then help other people build their own, except nobody wanted to make parts and ship them for free to anyone.makerbot was a failure because it was an attempt to make a low cost cnc type thing but guess what it was expensive and it sucked.this kind of “open source” stuff is simply not suited to projects where the whole design is pretty simple an idiot could have made it, but then relies heavily on expensive parts that have to be bought or sourced second hand at still high cost.when someone can build a reliable, accurate, repeating drive mechanism for cheap then sure, perfect. until then these projects are doomed.anyone who gets fooled into paying money for what is essentially a box because it means they only have to snap it together instead of build it… well…call yourselves hackers?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401024",
"author": "Reggie",
"timestamp": "2011-06-02T18:28:24",
"content": "I’ll say it again, a bom of $658 is not what I’m looking for, as pff has said, the design is simple enough, the only bit that is remotely interesting is the clip together part but at that price it just isn’t worth the effort.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401132",
"author": "silvesterstillalone",
"timestamp": "2011-06-02T22:13:01",
"content": "i have been tinkering with various cnc designs and configurations. it is exceedingly difficult to get the cost low while maintaining good results. granted even the cheapest machine is better than all but the most skilled humans however it still costs hundreds.the big cost that cannot be mitigated readily by the diy community right now is proper steppers. they cost. even the drivescrews and bearings that can be technically manufactured at home would be hard to make precise on diy equipment and would not cost much less. the frame gets the most attention yet is just a small fraction of the overall cost.i, along with everyone else it seems, am trying to make a design that has a low price point at reasonable quality. the few that do bring products to market usually state things such as “Having precision linear bearings.” that are actually just bits of plastic with no bearings at all. worse, claiming the machine’s resolution is the same as its precision. most steppers can microstep down to .0000625″ and similar ridiculous numbers when the screws that they are connected to can only do .003″ per foot.tl;drall diy machines are crap, but people are trying to change it",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401175",
"author": "The Steven",
"timestamp": "2011-06-03T00:16:17",
"content": "I think some of you are missing the point. They’re not trying to mass-produce high precession parts for nuclear reactors, they’re giving hobbyists a way to make a few parts when needed.Sure, a coat hanger may not be the height of design, but if I needed to crank out ten pcb’s once in a while, or make a custom case for an Arduino based project these are an interesting alternative to going to a machine shop and having project made for me.I’d like to see this device crossed with a Make-Bot. First the Make-Bot lays out the gross structure, and then the cutting tool comes in and refines the shape and cuts whatever holes are needed.Keep the total cost under $1000.00 and then folks will snap it up at the Craftsmen department at Sears. I sure would.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401193",
"author": "Devin",
"timestamp": "2011-06-03T01:42:02",
"content": "Why would anyone buy a plastic mill for $700, when harbor freight has a cast iron one for $600? I’ve never understood these cheaply-built pseudo-machine-tools. Just buy the real thing, or build it yourself (see: Dave Gingery’s books). The whole idea reeks of software guys trying to design hardware.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401203",
"author": "mjrippe",
"timestamp": "2011-06-03T02:59:00",
"content": "@Devin – Why would anyone buy a “cheaply-built pseudo-machine-tool” at Harbor Freight? I have seen new out of the box tools from them that are so grossly out of spec that they were dangerous. Spending hundreds on poorly cast iron is no better than spending it on plastic.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401263",
"author": "Drone",
"timestamp": "2011-06-03T07:30:01",
"content": "The MakerSlide has been funded on Kickstarter:http://www.kickstarter.com/projects/93832939/makerslide-open-source-linear-bearing-system?ref=searchPlus there are at least two funded CNC machines on Kickstarter, and a bunch of others that are either unfunded or in-process.But I agree with most of the posters so-far. All these DIY CNC machines I’ve seen to-date are far too expensive to take off.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401270",
"author": "pff",
"timestamp": "2011-06-03T07:43:38",
"content": "@Dronekickstarter is the worst thing i have ever seenany CNC forum has hundreds of designs that are probably better than this one in some way or another, and none of them involve some whiny kid asking for money from people for some unnecessarily machined bar stock and some v bearings bolted to a panel.The slide is arguably the easy part. get back to me when someone makes a cheap linear drive",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401272",
"author": "Fili",
"timestamp": "2011-06-03T07:53:38",
"content": "I got my CNC from china brand new for about 900$ and it’s an excellent machine. It has rigidity and precision well above any plastic frame could deliver. It includes a very nice controller box that keeps everything nice and compact. The work size is also larger than this (about 12″ x 8″ x 2″). So why bother get a plastic one when I can get an aluminum one? They even sell smaller ones, for about 600$ and they still are one class above this one.I’m not against building your CNC. I’ve build wood CNCs that sucked compared to my new aluminum one. At the moment I’m building a 5 axis one just because I can’t find a commercial CNC that doesn’t cost a fortune. I’m just against building something almost as expensive as a commercial unit but much worse. If this was about 100$, then great, I’d get one too. But for 500$, there are better options.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401287",
"author": "Meinaart",
"timestamp": "2011-06-03T09:47:06",
"content": "@Fili caring to share the name of the $900 Chinese CNC you bought?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401310",
"author": "polossatik",
"timestamp": "2011-06-03T11:07:31",
"content": "The cheapest pcb miller i found are “cmode cnc” (just search for that) for around 650 euro on ebay, not sure if that is any good, cannot find any reviews or user impressions about them.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401330",
"author": "steve",
"timestamp": "2011-06-03T12:05:03",
"content": "When all mills have been built, all repraps assembled and every stupidity tried out, man will notice that PLASTIC IS JUST NOT STABLE ENOUGH FOR MILLING ANYTHING EXCEPT CHEESE",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401597",
"author": "Fili",
"timestamp": "2011-06-04T06:53:11",
"content": "@Meinaart: search for CNC 2520 on ebay. That one is only $499. Mine is a little larger, I think.You could also search for SABLE 2015. It’s smaller but I think it’s more rigid. Also $499 :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401659",
"author": "John Conti",
"timestamp": "2011-06-04T15:00:50",
"content": "I think this highlights that academia could probably improve the practicality of these designs. Of course this brilliant exercise points out that snap together is a good choice for making bigger parts out of smaller removal technology instead of 3D printers. This is a good point.However, the reprap community seems to obsess over “Vitamins” or non-printed parts. In reality they probably could print a bunch more stuff if simple non-printed materials were included. In this case sheet plastic, but think about angle-iron (the kind with holes). One could print parts that just clip in the angle-iron’s holes? This commonly available material is cheap and rigid.I work at an industrial site where they stock the somewhat fancier u-track used to hold electrical and plumbing to structures. They make everything out that stuff! Screws together, or snap printed plastic to it.What we need is better CAM software I think…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401928",
"author": "Panikos",
"timestamp": "2011-06-05T11:33:10",
"content": "@FiliThe SABLE 2015 you mentioned looks like an interesting little machine for PCB’s. This thread has a chat on it.http://www.cnczone.com/forums/want_buy_need_help/62815-sable-2015_cnc_router_engraver-mil-3.htmlThanks for the tip",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "1253291",
"author": "priyatham",
"timestamp": "2014-03-11T10:38:42",
"content": "which type of controller are used in this project siri am using arduino mega 2560 bord so plz tel me witch type of board is best",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,177.131003
|
||
https://hackaday.com/2011/06/02/trick-mouse-keeps-the-screen-saver-at-bay/
|
Trick Mouse Keeps The Screen Saver At Bay
|
Mike Nathan
|
[
"Misc Hacks",
"News"
] |
[
"atmega",
"mouse",
"servo"
] |
[Jerry] wrote in to share
a little device he built to solve a problem he was having at work
. You see, every computer in his office has a policy-enforced idle timeout, requiring the user to enter a password in order to regain access to their desktop.
This is a huge pain, since he sporadically uses an old computer for the sole purpose of monitoring some applications running in his data center. With the computer timing out every 10 minutes, he is constantly required to enter his password in order to take a 10 second glance at the screen to ensure everything is OK.
Rather than circumvent the screen saver using a local security policy or by implementing a microcontroller-based signal generator, he opted to create a mechanical solution instead. His computer’s optical mouse resides inside a wooden frame, and is periodically swept from side to side by an ATmega-controlled servo, keeping the screensaver permanently at bay.
Call it a hack, call it a kludge, call it what you will. All we know is that while we might have done it a little differently, it works just fine for [Jerry], and it generates all sorts of interesting conversation to boot.
Stick around for a quick video demonstration of his mouse wiggler box.
[youtube=http://www.youtube.com/watch?v=GxcZMUxAHzc&w=470]
| 94
| 50
|
[
{
"comment_id": "400848",
"author": "Xb0xGuru",
"timestamp": "2011-06-02T11:31:50",
"content": "Sorry for this being the first post, but all I can say is it’s pointless. You’re defeating the purpose of your company’s IT policy to ensure unattended workstations are locked. Not only are you putting your own workstation at risk, but you could be breaching company policy which could result in disciplinary action.There’s a reason why it locks out and you’re dismissing it without asking the question.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "2998956",
"author": "r ho",
"timestamp": "2016-04-22T20:21:24",
"content": "This article inspired me to look for a way to do this a little simpler. I found “Screen Saver Killer” on the iOS app store. It does a similar job by projecting a pattern the mouse “sees” and “keeps the screen saver at bay”!!! It even has a timer. Great for working at home!",
"parent_id": "400848",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "400849",
"author": "addidis",
"timestamp": "2011-06-02T11:32:24",
"content": "hehe the mouse i made for darkfall would do the same thing, only with out all the hardware, but who doesnt like some over engineering.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400850",
"author": "yetihehe",
"timestamp": "2011-06-02T11:35:24",
"content": "Putting optical mouse on a watch also works.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400851",
"author": "nes",
"timestamp": "2011-06-02T11:40:52",
"content": "^^ genius! But what if your IT department forces you to use gear that has not been upgraded in a decade?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400852",
"author": "wardy",
"timestamp": "2011-06-02T11:41:59",
"content": "It’s missing something… perhaps an arduino-powered web-enabled wifi PIR laser device to tweet the fact that you’ve moved the mouse again.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400853",
"author": "Seth",
"timestamp": "2011-06-02T11:43:15",
"content": "also pressing win key(opening Start menu) prevents from screensaver",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400854",
"author": "Chris",
"timestamp": "2011-06-02T11:45:18",
"content": "I had the same issue at work. I just made a small executable that sent a double “Scroll-lock” key every five minutes. My boss loves my fix, my IT security guy hates it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400855",
"author": "Jac Goudsmit",
"timestamp": "2011-06-02T11:45:46",
"content": "Heh I can think of at least 5 different ways to accomplish the same thing, but this is not one of them. Kudos for originality!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400858",
"author": "Doc Oct",
"timestamp": "2011-06-02T11:49:03",
"content": "This is pretty stupid. Why not set up a microcontroller with a usb hid device to pretend to be a mouse or keyboard and send a movement or keystroke every so often? Or hell, open an old ball mouse up and stick a 555 timer on one of the axis to send a pulse train. Get a 556 and you can have one timer with a long period which activates another one to send the pulses every once in awhile. Build it on veroboard and put the output on a pair of IC clips and it doesn’t even have to be permanent if you’re lucky.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400859",
"author": "Jeff",
"timestamp": "2011-06-02T11:49:32",
"content": "I just run windows media player on repeat.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400861",
"author": "fartface",
"timestamp": "2011-06-02T11:52:39",
"content": "Wait, he is in IT and in a data center and finds it harder to adjust the ONE small thing to change the local security policy than it is to spend a weekend designing a rube goldberg device to move the mouse once in a while? He claims it’s a monitoring PC that should already have this change, and if he really is in IT and doing monitoring, then he has the local admin password to get in to do this..If he was intentionally trying to do it a silly way, then kudos. Silly has a place.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400862",
"author": "Jason!",
"timestamp": "2011-06-02T11:53:08",
"content": "Or, write some software to let you know if something is broken, rather than having to go check every 10 minutes to see if it’s still ok. That’s like the worst IT job ever.But, kudos for making the automated mouse mover.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400864",
"author": "smoker_dave",
"timestamp": "2011-06-02T11:59:14",
"content": "Hi Mike Nathan,I suggest a change to your post. Take the sentance – “Rather than circumvent the screen saver using a local security policy or by implementing a microcontroller-based signal generator, he opted to create a mechanical solution instead.”And make it say “instead of doing it the easy way, he decided to go down the difficult route instead.”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400865",
"author": "Aaron",
"timestamp": "2011-06-02T11:59:18",
"content": "or just use killsaver…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400866",
"author": "Aaron",
"timestamp": "2011-06-02T12:00:23",
"content": "I wish I had that much time to screw around at work.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400867",
"author": "_txf_",
"timestamp": "2011-06-02T12:00:49",
"content": "this reminds me of this:http://thedailywtf.com/Articles/Fisher_Price_Technology_Integration.aspx",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400869",
"author": "kj",
"timestamp": "2011-06-02T12:06:13",
"content": "wow, what a way to completely over-engineer a solution.i had a similar problem at my work and it was easily resolve by software (http://www.zhornsoftware.co.uk/caffeine/)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400872",
"author": "nes",
"timestamp": "2011-06-02T12:15:53",
"content": "I’m guessing where he works the security policy is so anal, unplugging the mouse himself would need a ream of paperwork. (Government department perhaps?) I’ve been on a site where the usb plugs were simply glued in and any spares epoxied over. And having a flash drive on your person would likely earn you castration followed by polite dismissal. Then again if it were that bad, how does he program the Arduino?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400873",
"author": "Bogdan",
"timestamp": "2011-06-02T12:18:18",
"content": "Moving apart from the security measures and reasons behind this hack, it is still funny.It’s not as ingenious as the mouse over the clock, but still works.If it were me, i would just load the atmega with an USB ASP and make it act like a mouse that moves a bit every few minutes. Put everything disguised in an old flash drive and the system is much better.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400876",
"author": "Tuck",
"timestamp": "2011-06-02T12:25:25",
"content": "Why is it not made of LEGO?? -1",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400877",
"author": "tw",
"timestamp": "2011-06-02T12:26:08",
"content": "I’ve got the same issue here, a machine hooked up to a 6′ x 12′ projector for displaying the current health of of the datacenter/network. I just dropped it off the domain, and run manual updates, BUT wouldn’t an easier solution be this:http://www.thinkgeek.com/computing/usb-gadgets/ae83/?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400879",
"author": "Mark",
"timestamp": "2011-06-02T12:27:40",
"content": "There are several bits of MOUSE JIGGLER software out there, many can run off a memory stick…much easier and less obvious than this contraption.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400880",
"author": "icebox",
"timestamp": "2011-06-02T12:29:48",
"content": "I really hope this was made just to fool around.Otherwise that’s a lot of time in which you could flip the mouse, point it towards a fluorescent light and go have some beer.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400881",
"author": "smoker_dave",
"timestamp": "2011-06-02T12:32:53",
"content": "My solution to this problem:Create an application in Visual Basic .NET which uses the built in SendKeys method to generate a key press event every time a timer expires.This takes one line of code and less than a minute to produce.Maybe there is a restriction on the software the guy can run on his machine though? You did say he worked in IT didn’t you?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400882",
"author": "Nutrino",
"timestamp": "2011-06-02T12:44:43",
"content": "There’s a commercial product that does this – they took a microcontroller from a mouse, added movement code, then stuck it in a flash drive case (like more than one person said above)http://www.wiebetech.com/products/MouseJiggler.php",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400885",
"author": "Derrick",
"timestamp": "2011-06-02T12:48:06",
"content": "This is why application monitoring services usually do things like..send emails, and text messages… Or you could just stick the mouse on top of a clock with the cover removed so the hands move the mouse ball.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400887",
"author": "Steve",
"timestamp": "2011-06-02T12:58:35",
"content": "“With the computer timing out every 10 minutes, he is constantly required to enter his password in order to take a 10 second glance”Well there’s your problem right there. A 10 second glance should’t make your 10 minute screen saver turn on. But yea, probably easier to build that device than getting IT to fix the screen saver. I just hope your device shuts off after 10 minutes ;-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400888",
"author": "Josh",
"timestamp": "2011-06-02T13:01:41",
"content": "Awesome.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400890",
"author": "Royyor",
"timestamp": "2011-06-02T13:04:32",
"content": "LOL, funniest hack I’ve seen in a while. I think that most of the comments missed Jerry’s point that “it generates all sorts of interesting conversation to boot” which was probably the real design goal. That goal and doing something just because he could do it is what made it fun. Which is why we do this kind of stuff anyway.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400893",
"author": "Guest",
"timestamp": "2011-06-02T13:07:59",
"content": "I use this:http://mousejiggler.codeplex.com/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400895",
"author": "Tony",
"timestamp": "2011-06-02T13:10:26",
"content": "@smoker_dave, .Net is a bit of overkill when vbscript works fine.Moving the mouse pointer and then putting it back works better than SendKeys.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400897",
"author": "Medox",
"timestamp": "2011-06-02T13:11:45",
"content": "nothing beats the “optical mouse on a watch” method. it’s that baterry powered / easy to hide / excuse-proof workaround which always works.get a SH one for – what? – 2-3 bucks?then again, if one can bring such a machine at work without getting fired, why not bring a cat and tape the mouse on its tale? just saying…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400899",
"author": "Scott",
"timestamp": "2011-06-02T13:12:45",
"content": "If silly has a place, and so does biology – why not bring in a *real* mouse and have it run around over a flipped optical mouse? Okay, there’s the poo problem but you’d get a pet out of the deal…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400901",
"author": "Threeway Handshake",
"timestamp": "2011-06-02T13:18:41",
"content": "Or you could have just bought thishttp://www.cdw.com/shop/products/WiebeTech-Mouse-Jiggler-Fast-Version/1712991.aspx",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400916",
"author": "techjoker",
"timestamp": "2011-06-02T13:21:15",
"content": "Being in IT, I must agree with Xb0xGuru.Disregarding or circumventing your companies security policies could well get you fired. Even if it doesn’t get you fired it could result in the company losing clients.Where I work we have a client that requires regular audits. Among the many things that are checked is what our security policy is (they frequently add requirements, many of which are ‘silly’), they then verify that the policies are implemented and not compromised.In this scenario, I could see the auditor walking through the office (already secured with card key access and many other protections) and seeing a device not locked down causing us to fail the audit and lose the client. Which incidentally in this case would cost about 30 – 40 people there jobs.What a way to stop the inconvenience of entering a password. Potentially cost you and 30 – 40 of your co-workers their job, so you don’t have to type a password. Brilliant!I am all for hacking together a solution for a problem, but when it comes to work, you probably should not be circumventing your companies policies, it could impact a lot more than just you and your job.In this case, I would ask IT to set up a restricted workstation that is exempt from the policies. That is how it is here, the Phone Operators station and my Nagios Station are exempt from the policies, but restricted to accessing their specific systems.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400919",
"author": "jm",
"timestamp": "2011-06-02T13:28:30",
"content": "Solution – Write a screensaver to show the information he needs to monitor..This would keep the system locked and he could see what he needs with no fuss..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400922",
"author": "IJ Dee-Vo",
"timestamp": "2011-06-02T13:38:35",
"content": "@Doc Oct=Oh no hgow dare someone do something in a way I would not. Only my solutions to others problems must be implimented!Awesome!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400924",
"author": "Chris Muncy",
"timestamp": "2011-06-02T13:40:43",
"content": "For all of you NON Admins out there:1. a REAL sysadmin won;t use his admin creds as his normal login creds.2. a REAL sysadmin will have GPO in place to prevent the installation of unmanaged and unauthorized software.3. Yes we have 1 AND 2 in effect at my work.So what he did was a Rube Goldberg way around his screensaver but it would violate our security policy as well since an unattended pc needs to be locked.I applaud the effort.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400927",
"author": "anti-fanboi",
"timestamp": "2011-06-02T14:01:50",
"content": "If any HaD story deserved the “Arduino hacks” tag…Good call jm!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400929",
"author": "DigitalKlepto",
"timestamp": "2011-06-02T14:06:59",
"content": "Cool hack, I guess…but way over-engineered.I had a similar issue, and found a simple solution. I monitor a live feed of statistics for a call center, and needed a secondary PC to stay awake despite forced policies from the domain. I used a nice little scripting program called AutoIT to simulate a mouse movement every 5 minutes for 8 hours, then used Task Scheduler to run it at the start of business during the weekdays.I also don’t leave my equipment unattended. If I’m away from my desk, everything is locked up.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400939",
"author": "G-Reg",
"timestamp": "2011-06-02T14:21:35",
"content": "Over, Under, poor, what ever engineered. I can see the reason for such a cumbersum system is to be simply that. Something thats going to be next to impossible to be left on by accident (like a program). I will not argue the idiocy behind the idea being it is a safty measure being surcumvented, but such a delightfuly, refreshing way to do it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400940",
"author": "wtf",
"timestamp": "2011-06-02T14:21:56",
"content": "“a-something” was All advantage. LOL",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400941",
"author": "Booker T. Worthington",
"timestamp": "2011-06-02T14:22:06",
"content": "Optical mouse + watch = brilliant. I would have just written a program to send keystrokes every so often.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400943",
"author": "wtf",
"timestamp": "2011-06-02T14:23:24",
"content": "looks like my other comment was blown away. oh well",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400944",
"author": "Jamen",
"timestamp": "2011-06-02T14:25:25",
"content": "I would have built a small treadmill for the mouse, and put the mouse on a wire so it stayed in place while the treadmill ran underneath it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400951",
"author": "Bill",
"timestamp": "2011-06-02T14:37:16",
"content": "In my scenario, the domain controlled computer doesn’t allow any software to be installed, including any new device drivers; Anything that looks like or (heaven forbid) actually has memory on it plugged into the computer results in immediate firing. And it has the same lockout screen saver policy.So all the suggestions for writing a program, script, etc or building a HID usb dongle would not work.I’d argue the system would not reasonably violate the spirit of the security policy if it externally monitored my presence in front of the computer. IE, a PIR motion sensor or simple contact switch on my desk chair, etc. But that depends on the insanity of your local domain security controller.But just continuous random movements from a wrist watch or similar does seem like a bad idea.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400953",
"author": "Jessica",
"timestamp": "2011-06-02T14:40:26",
"content": "Not many of you seemed to have actually read his article. First thing he says is:“Ok, I’ll admit it. It’s excessive and more than a bit Rube Goldberg-ian. But it does work and it beats the heck out of typing in my password twenty times a day.”He already knows it’s a silly solution. He also doesn’t care. I’m pretty sure he was using this as a learning experience too.Also, it doesn’t say anywhere that this computer is in some lone cubicle far away from him. I might be wrong, but I get the impression that it’s within sight, and thus never truly unattended.We don’t know if he was allowed to run his own software stuff. We don’t know if he could plug in something to pretend to be a mouse/keyboard. But it doesn’t matter.Why do I even read HaD comments :\\ It’s a hack. It doesn’t have to be a beautiful solution to the problem.Anyway, clever hack Jerry :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400976",
"author": "dr_time",
"timestamp": "2011-06-02T15:57:35",
"content": "There’s a little program called Caffeine that can accomplish this with much less tom-foolery.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400982",
"author": "Terc",
"timestamp": "2011-06-02T16:23:53",
"content": "Erm, seems like a much better solution would be to find a way to access the data presented on this computer from his main computer. Then virtualize this thing. And… oh whatever. But seriously, that’s pretty well over-engineered.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400989",
"author": "Chris Allick",
"timestamp": "2011-06-02T16:36:05",
"content": "why not use a teensy as a usb dongle and just send a “click” message every 8 minutes.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,176.979156
|
||
https://hackaday.com/2011/06/01/cheap-and-cheerful-arduino-breadboard-basics/
|
Cheap And Cheerful Arduino Breadboard Basics
|
Jesse Congdon
|
[
"Arduino Hacks",
"how-to"
] |
[
"arduino",
"stripboard"
] |
For those less experienced folks looking to move their Arduino projects to more permanent installations, this is just for you! [Martyn] Posted a three part series, VeroBoardUino, over at his
blog
about moving your Arduino project to a soldered breadboard.
Part
one
kicks off with the appropriate breadboard requirements, modifications, and a simple 7805 power supply. In the guide [Martyn] is using strip board, so copper connections will have to be broken using a drill or just by scraping with a hobby knife. Strip board also saves a bit of wire routing in the end. Part
two
handles the reset button, serial connection and chip socket (Part
2.5
has also been added to include schematics of the breadboard). Finally, part
three
installs the crystal and connects your Atmega chip to power and ground.
Next post he will be covering more on the software end of things, burning the bootloader and uploading programs to your new board so stay tuned for updates!
| 8
| 8
|
[
{
"comment_id": "400650",
"author": "Paul Potter",
"timestamp": "2011-06-01T21:36:55",
"content": "That sounds worth checking out.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400671",
"author": "Lee",
"timestamp": "2011-06-01T22:06:19",
"content": "Apart from it is not using breadboard, it is veroboard.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400710",
"author": "MC",
"timestamp": "2011-06-01T23:57:46",
"content": "Does anyone know of any suppliers in the US for stripboard? I’ve looked several times and nobody seems to carry it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400753",
"author": "Haku",
"timestamp": "2011-06-02T02:19:17",
"content": "Hopefully this will lead to more projects being showcased on HaD that aren’t just a “look what I done!” with pre-built Arduinos & shields of some sort, but a thought out board (even stripboard) that contains just the components needed for the projects.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400801",
"author": "smoker_dave",
"timestamp": "2011-06-02T07:55:05",
"content": "MC – Did you checkhttp://www.newark.com/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400847",
"author": "Sean",
"timestamp": "2011-06-02T11:27:04",
"content": "I actually use a variation of this – building to padboard (a variant of veroboard that has no connections between each pad) using 30AWG Kynar wire.With stripboard you lose a pad each time you make a cut and it is inefficient when there are parallel busses. 3 pieces of 30 gauge Kynar can be ‘threaded’ through one hole and routed around the board and the ends are easy to strip with a good pair of snips and practice.Normally I first create tracks where it is sensible to do so by soldering a piece of stripped Kynar wire along pads then start ’embroidering’ the rest. This makes for a much higher density than would normally be available.Obviously crosstalk means this is not good at high frequencies but then neither is breadboard and anything fast enough to cause grief probably shouldn’t be built using pad or stripboard anyway.The result is surprisingly robust and I have pieces of kit that have boards built this way that are still working years later.I even prototype this way these days as I hate breadboards. If I end up not using the board then I pull the chips, desolder the sockets (I use turned pin) and keep the boards for robbing of the cheap components if and as I need them. On a few occasions I have even depopulated and cleaned a piece of board to re-use it when I’m out of fresh board.A lot easier to show than describe so maybe I’ll do a tutorial someday.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400870",
"author": "Billy Bob",
"timestamp": "2011-06-02T12:08:26",
"content": "http://www.radioshack.com/product/index.jsp?productId=2102845",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401130",
"author": "Gösta",
"timestamp": "2011-06-02T22:09:22",
"content": "I love this hack and the way it is documented!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,177.076081
|
||
https://hackaday.com/2011/06/01/archaeopteryx-a-large-colorful-midi-controller/
|
Archaeopteryx: A Large, Colorful MIDI Controller
|
Mike Szczys
|
[
"Musical Hacks"
] |
[
"hub",
"keyboard",
"korg",
"midi",
"nanokontrol",
"usb"
] |
This is [Robert Jarvis’] new
MIDI controller which he has christened the Archaeopteryx
. It makes its home (quite nicely might we add) in a discarded wooden cutlery case. This provides a strong and stable base for the controls while keeping the electrical connections close at hand for any rewiring or repair work.
The interface is made up of several different input devices. The guts from two Korg Nanokontrols donated the sliders and pots. These are both USB devices and they join with a USB keyboard which has been rewired to work with the colorful push buttons. All three devices connect to a hub inside which makes the device work using just one cable connection to the computer.
There’s a lot of wiring shoved into that shallow case. But if he keeps the keyboard mapping straight we think it won’t be too hard to configure the device. We like it that [Robert] included a snapshot of the back-of-the-envelope prototyping plans he made. This kind of ‘how I got there’ information is what we’re looking for when choosing projects to feature.
| 10
| 10
|
[
{
"comment_id": "400630",
"author": "zool",
"timestamp": "2011-06-01T20:37:56",
"content": "nice",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400643",
"author": "fermicirrus",
"timestamp": "2011-06-01T21:07:17",
"content": "http://www.midibox.org/?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400646",
"author": "M4CGYV3R",
"timestamp": "2011-06-01T21:12:26",
"content": "That’s awesome.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400662",
"author": "Paul Potter",
"timestamp": "2011-06-01T21:51:44",
"content": "Very nicely done.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400718",
"author": "Decoy",
"timestamp": "2011-06-02T00:52:00",
"content": "Anyone else crave skittles?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400797",
"author": "Yen",
"timestamp": "2011-06-02T07:17:04",
"content": "Oddly enough, “archaeopteryx” is also the name of a Midi generator, written in rubyhttps://github.com/gilesbowkett/archaeopteryx",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400874",
"author": "Bogdan",
"timestamp": "2011-06-02T12:20:20",
"content": "It somehow reminds me of that funny picture with the two boxes with switches labeled ‘man vs woman’.Still, great work! The mechanical work is admirable.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401006",
"author": "Nicholas",
"timestamp": "2011-06-02T17:27:22",
"content": "Yeah,http://www.midibox.organdhttp://www.ucapps.de",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401673",
"author": "James",
"timestamp": "2011-06-04T15:51:48",
"content": "Yen: I have a hard time thinking this is a coincidence, and think the creator of this new hardware device should change the name.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "1012990",
"author": "jbdevelopment",
"timestamp": "2013-06-05T20:38:52",
"content": "I want one of this do you sell it ?",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,177.028167
|
||
https://hackaday.com/2011/06/01/kickstarter-roundup-wednesday-june-1st/
|
Kickstarter Roundup: Wednesday, June 1st
|
Mike Nathan
|
[
"News"
] |
[
"Crowd Funding",
"roundup"
] |
We have been getting tons of emails lately recommending we take a look at various Kickstarter projects. We used to ignore them since they all boil down to a request for project funding, but since there are so many cool projects out there, we figured we might as well share a couple. Some of these projects have already met their funding goals, but we thought they were worth a mention anyhow.
Solar Powered Coffee Roasting
We’re all about both coffee and alternative energy, so
this one caught our eye right away
. While this coffee roaster won’t exactly fit on your back porch, it would be perfect for a coffee shop located in a sunny locale. Based off “power tower” solar concentrator systems, this rooftop-mounted solar harvester has big potential. Pair this with sopme sustainably-grown coffee, and you’ve got quite the tasty combo.
HexBright – an open source flashlight
What do you get when you combine milled aluminum hex bar and a Cree XM-L LED? A lightweight,
extremely bright flashlight
that won’t roll away on you. The HexBright puts out 500 lumens and sports a built-in rechargeable battery that can be topped off via your computer’s USB port. Not only that, the high-end version can be programmed to support any pattern or brightness that you choose. We’ll take two, thanks.
Arduino Project Board
[
Randy Sarafan
] of
Clap-off bra
fame is working on a slimmed-down Arduino board for use in the final stages of project development. He really doesn’t see the need to put an entire Arduino development board into his finished projects and often makes a quick perfboard circuit for his builds once he is finished prototyping. He’s grown tired of the process and developed a small circuit board that has all the connectivity he needs, without all the extra bits found on Arduino development boards.
| 21
| 21
|
[
{
"comment_id": "400611",
"author": "Bill",
"timestamp": "2011-06-01T19:36:31",
"content": "These projects look cool, and I like that HAD posted them.But I’d feel better about it if the projects were promising to open source the design. Then it’s not so much a commercial for a product.Not that I checked these projects did or didn’t say they would, just responding to HAD’s feeling on posting them.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400618",
"author": "TBO",
"timestamp": "2011-06-01T19:56:30",
"content": "For the Arduino project board, why not just use an RBBB (http://shop.moderndevice.com/products/rbbb-kit)? Quite cheap, optionally breadboard compatible (just solder in the included headers), and you can optionally cut it down if you don’t need power regulation.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400633",
"author": "ravenflyer",
"timestamp": "2011-06-01T20:42:10",
"content": "interesting projects, though i personally dont like flashlight one, not enough scalability.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400644",
"author": "wardy",
"timestamp": "2011-06-01T21:09:04",
"content": "Why does a flashlight need firmware again? I must have missed something. Also, USB is not a very efficient way to recharge a battery – any kind of battery. Who’d going to turn on a bloody PC to charge a flashlight?Kickstarter provides yet more comedy products.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400648",
"author": "IceBrain",
"timestamp": "2011-06-01T21:21:43",
"content": "@wardy: I see you haven’t been introduced to the wonders of the cheap charger with an USB plug on its end.Since phones will all start using USB for power, it reduces the number of charges you need lying around.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400654",
"author": "xorpunk",
"timestamp": "2011-06-01T21:42:41",
"content": "firmware for a flashlight..and designed by a NASA engineer? What’s wrong with a button and a few analog components? Last I checked USB charging didn’t need a chip either..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400661",
"author": "DanJ",
"timestamp": "2011-06-01T21:49:12",
"content": "Is there a link to the flashlight’s schematic or firmware? It claims to be Open Source.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400666",
"author": "loans",
"timestamp": "2011-06-01T21:55:24",
"content": "The hexbright project looks bad ass. Why firmware? because I’m tired of buying flashlights with retarded settings. High and low make sense, but I never need a blinking light and definitely don’t want to click through an SOS setting too.DanJ, in the comments the head of the project talks about plans to eventually release code, schematics and even mechanical drawings.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400667",
"author": "TheCreator",
"timestamp": "2011-06-01T21:56:08",
"content": "Your missing a reverse biased diode on your arduino breakout board. Also C4 looks to be used as a filter cap for the lm7805. If that’s the case you should also use a .1uf cap as a bypass capacitor for the atmega328 chip. C3 is spec’ed to be a .33uf cap from the lm7805 datasheet, i don’t believe those come in a radial package. Like @TBO said, just buy a RBBB they come in kits, are cheap, and easy to assemble.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400682",
"author": "Hackerspacer",
"timestamp": "2011-06-01T22:25:22",
"content": "Open source Surefire flashlight, I like it! Do they use 7075 aluminum alloy like I think the Surefires do?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400702",
"author": "Taylor Alexander",
"timestamp": "2011-06-01T23:40:31",
"content": "If you want a high quality flashlight now, check out Fenix. They are just as good as Surefire but much cheaper. I have a Fenix LD01 that I’ve carried on me every day for 6 months now. Great battery life and extremely bright for its size. Its amazing how useful having a real flashlight at all times is, rather than trying to use your cellphone, even compared to the LED flash on phones.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400743",
"author": "h_2_o",
"timestamp": "2011-06-02T01:41:03",
"content": "if the flashlight is so open source where is any information on it except for the length at? sorry but kickstarter is starting to piss me off, 31k to open source a flashlight, i call BS.sorry for the rant, i just don’t get this really pay me to get something you can get for free over athttp://www.candlepowerforums.comyeah i’ll say it, go there instead and support a real open source community",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400813",
"author": "liard nelson",
"timestamp": "2011-06-02T09:00:27",
"content": "@h_2_o, Taylor Alexander, wardy:Thank you.A Flashlight with a Cree Emitter and a 18650 Cell… U know how much of them are on the Market already? You can grab them for cheap almost everywhere.I’ll stick with my cheap aluminium waterproof LED flashlight, after changing the three 0.5W LED against 3W ones, i am really satisfied.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400817",
"author": "Jesse",
"timestamp": "2011-06-02T09:21:56",
"content": "Cool projects! Yes, it’s easy to go and buy a cheap flashlight, but where is the fun in that!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400925",
"author": "IJ Dee-Vo",
"timestamp": "2011-06-02T13:44:24",
"content": "@xorpunk So Nasa engineers should not design flashlights? How about doing a flash light project and posting it here?@wardy Because of course I would only turn my pc on just to charge my flash light. I would never have my flash light simply plugged into a USB port as I happen to be using my PC for other things",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400942",
"author": "nullterm",
"timestamp": "2011-06-02T14:22:36",
"content": "I never thought I’d see the Hexbright mentioned outside CPF.o.O",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400956",
"author": "Matt",
"timestamp": "2011-06-02T14:48:26",
"content": "For the solar-powered coffee roaster, wouldn’t it be much easier to use a parabolic dish lined with reflective material? Less moving parts with just as much roasted coffee at the end.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400979",
"author": "am_i_evil",
"timestamp": "2011-06-02T16:19:54",
"content": "@wardy – I have lots of USB-chargeable devices in my car and on my backpack.Now since you don’t get it, you are -likely- assuming this is accomplished with some kind of desktop computer and AC inverter in my car.. lulz.Mintyboost and a fistful of Enerloop AA’s, for the win…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401034",
"author": "Andrew",
"timestamp": "2011-06-02T18:54:08",
"content": "Sometimes I think Kickstarter requests are a bit abusive of the system — I can see using it for acquiring funding for large projects that would otherwise be out of your means, but some projects on there are only asking for a few hundred bucks, which I’m sure the askers could front themselves (considering they probably own laptops and cameras to make the videos, etc.). Seems like a great way to get the word out on projects, though, so maybe that’s where most of the motivation comes from.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401117",
"author": "Matt",
"timestamp": "2011-06-02T21:36:50",
"content": "There’s some really good projects on Kickstarter, and some really awful ones, just like everything else. It’s a shame most of them aren’t open-source.A bit of a shameless plug, I’m developing an open-source EEG with hackers/makers/developers in mind, and doing fundraising via Kickstarter (athttp://kck.st/lQp25n). Hopefully, there will soon be an affordable, multi-channel, wireless, open platform for people to make awesome brainwave projects with!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401353",
"author": "gerald",
"timestamp": "2011-06-03T12:33:59",
"content": "awesome flashlight.. ordered mine today.. good find..",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,177.192279
|
||
https://hackaday.com/2011/06/03/i-am-root-ip-camera-shell-access/
|
I Am Root! – IP Camera Shell Access
|
Mike Szczys
|
[
"Linux Hacks"
] |
[
"camera",
"ip camera",
"root",
"rosewill",
"terminal",
"wifi"
] |
[Shawn] emailed us some pictures and a description of his latest hack. He cracked open a
Rosewill RXS-3211 IP Camera
because the output of the web interface made him certain that it was running Linux and he wanted to unlock some more potential from the device. These cameras are used for security, and offer a browser-based interface via a WiFi connection. After studying the circuit board he started poking around an unpopulated set of four pads and managed to get a serial connection up and running. The device’s serial terminal operates at 115200 baud using eight data bits, one stop bit, and even parity.
He wonder where to go from here and we have a few ideas. You can see in the terminal readout above that it announces when motion is detected. We think this motion detection would be quite useful with a small rover while adding live video broadcasting at the same time. An embedded Linux system should be able to interface with the device and we think that a bit of creative coding would open up the WiFi connection for other use as well. Not bad for a module that can be had for as little as $29. We’ve included all the images [Shawn] sent us after the break and we’d love to hear your thoughts on what you’d use this for in the comments.
| 26
| 26
|
[
{
"comment_id": "401346",
"author": "Rogan Dawes",
"timestamp": "2011-06-03T12:13:44",
"content": "Next step is to reverse engineer the firmware to see if you can build your own custom firmware for the device. With any luck, it is using standard Linux drivers for things like the wifi and the camera, and you can use it as the controller for the rover, with your own vision application running on it.He doesn’t give any details about the amount of flash or RAM, or the actual devices making up the board, so that is probably one of the first things to do, before reversing the firmware.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401347",
"author": "Rogan Dawes",
"timestamp": "2011-06-03T12:16:16",
"content": "Don’t forget this, though:http://secunia.com/advisories/44721",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401349",
"author": "dancinbojangles",
"timestamp": "2011-06-03T12:21:55",
"content": "Autonomous stray cat repellent water gun system.Automatic shaming system for office fridge-raiders.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401350",
"author": "QW",
"timestamp": "2011-06-03T12:31:22",
"content": "Could be used to create a serial to shh bridge for connecting retro computer to the net.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401352",
"author": "Rogan Dawes",
"timestamp": "2011-06-03T12:33:27",
"content": "And finally, another guy also hacking around with these devices:http://spareclockcycles.org/2011/05/23/exploiting-an-ip-camera-control-protocol/Last post from me, I promise.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401354",
"author": "plaes",
"timestamp": "2011-06-03T12:34:20",
"content": "This also smells like a case for gpl-violations.org :S",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401360",
"author": "IceBrain",
"timestamp": "2011-06-03T13:06:15",
"content": "@plaes: it’s only a violation if you *ask* the company for the sources and they don’t provide them. They don’t need to distribute them with the camera.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401368",
"author": "fartface",
"timestamp": "2011-06-03T13:14:47",
"content": "Cool, but using those pieces of junk for security? good grief. Maybe he can hack it more and figure out how to hook a real camera to the mainboard instead of the $1.99 garbage cam on them. they have HORRIBLE light sensitivity and video quality because the camera portion is garbage.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401370",
"author": "Ivan",
"timestamp": "2011-06-03T13:26:43",
"content": "If this cam was 30$, it looks like the price suddenly more than doubled.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401372",
"author": "Rogan Dawes",
"timestamp": "2011-06-03T13:40:17",
"content": "Ivan, Amazon had 1 left for $29. Looks like someone took it since I last checked, though :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401377",
"author": "ss",
"timestamp": "2011-06-03T14:00:17",
"content": "@IceBrain: Actually, they are required to do one of the following: a) provide source code with the product, b) provide a written offer to send you the source code, or c) pass on the written offer provided by whoever gave them the software. I couldn’t find any of these on their site (or in the user manual), but maybe they package a CD or written notice with the camera itself.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401379",
"author": "Shawn",
"timestamp": "2011-06-03T14:11:30",
"content": "Actually I saw no mention of the providing Source Code on the box, in the manual or on the cd. I thought the same thing about the GPL when I got this. The Linksys WRT54G Routers say right on the packaging it’s Linux based.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401398",
"author": "bosnyak",
"timestamp": "2011-06-03T15:40:00",
"content": "The RXS-3211 is not wireless, it is wired ethernet only. I think this makes it a bit less attractive especially at the $60 price point.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401405",
"author": "Chris",
"timestamp": "2011-06-03T15:56:44",
"content": "I break into little embedded devices like these all the time. Usually, you need little more than a TTL/3.3V to RS232 serial/level converter and a piezoelectric buzzer. I use a device based on the Prolific PL-2303, as it goes straight from TTL to USB. The buzzer can be used to probe what you think is the serial TX port as you reboot the device. It will make chirping noises as text is sent to the port. Most of the time though, just find 4 pads, and probe with a voltmeter. Ground is usually pretty obvious, then find positive, the 2 that are left are RX and TX. Just connect to them and done. If you don’t get text, swap the lines. Almost everything modern runs at 11500/8/1You would be SHOCKED how often little embedded devices run Linux, and sometimes devices you don’t expect it in.I have found Linux based firmware in LG xxLG50 series TVs, cable boxes, an Ademco high end alarm system, cheap Chinese DVD players, and several IP phones.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401408",
"author": "Doktor Jeep",
"timestamp": "2011-06-03T16:00:40",
"content": "This is some good stuff right here.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401424",
"author": "asheets",
"timestamp": "2011-06-03T16:19:05",
"content": "rosewill==good, cheap, hackable stuff that occasionally overheats… . Love the brand.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401445",
"author": "Mike",
"timestamp": "2011-06-03T17:35:37",
"content": "Is it a MIPS or ARM based CPU?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401454",
"author": "Shawn",
"timestamp": "2011-06-03T18:11:06",
"content": "@bosnyak your right I just noticed he posted that in the article. I got it for $29.99 cheapest IP camera around and from a semi-known brand.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401456",
"author": "Shawn",
"timestamp": "2011-06-03T18:13:14",
"content": "@Mike its ARM9 based, it has a Prolific PL1029",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401483",
"author": "Doktor Jeep",
"timestamp": "2011-06-03T19:52:19",
"content": "If it’s Linux, can Motion be installed on it?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401514",
"author": "Retroplayer",
"timestamp": "2011-06-03T21:55:47",
"content": "I have a couple of these:http://cgi.ebay.com/Wireless-WiFi-IP-Internet-PTZ-Dual-Audio-Camera-3G-/220755850175?pt=LH_DefaultDomain_0&hash=item336612f3bfNot from this seller (don’t remember who I bought them from) and it actually has a labeled serial port on it on the PCB. I also connected it up and found it was run on linux, but I never really thought of what I really wanted to do with it. It has so many features built in already. Maybe change the web interface? I did think about whether it would be possible to use a different compression algorithm (like xvid) since motion JPEG is so freakin large. But I doubt it has the processing power for that. The web interface requires an activex control to be installed so I have not been able to log into it from work or my smartphone (not android or iphone.)There also appears to be a JTAG port and possibly a second USB port (1 is used by wifi, the other by the camera….which probably means you could add a USB video converter if you had the linux drivers.) It’s actually a cool little camera. Video quality isn’t too bad and the IR LEDs work pretty well. The two-way audio portion is pretty useless though (too choppy and buzzy to really comprehend.) The trigger in and alarm out is pretty useful as you can use the trigger in to cause the camera to move to a preset location. Ahh, there’s an idea… add more trigger signals for the various resets. I could pretty much monitor my entire lower level that way. Also maybe motion tracking, since it is pan/tilt.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401528",
"author": "Biomed Bob",
"timestamp": "2011-06-03T23:03:23",
"content": "anyone know what the minimum distance is for it? My parents have a small bird’s nest underneath their eaves that the parent’s keep coming back to each year, and they’d love to put something like this in so they can watch the nest easily from. Challenge is that it’s less than 4″ straight down from the bottom of the roof to the nest. Coming in from the side is a similar challenge. It’s either something like this or a borescope with a simialr interface if I can find one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401773",
"author": "Rick Dean",
"timestamp": "2011-06-04T21:46:37",
"content": "The feature to add is DLNA support so it can be viewed from a Samsung TV. I run minidlna from my linux server, and it is tiny enough that it might fit on the camera.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402518",
"author": "Kris",
"timestamp": "2011-06-07T06:50:49",
"content": "Newegg has these bad boys for $40.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "407317",
"author": "Jeremy Grosser",
"timestamp": "2011-06-18T07:38:22",
"content": "I grabbed one of these from Amazon after seeing this post and documented my experience tearing it apart here:http://blog.synack.me/2011/hacking-the-rosewill-rxs-3211-prolific-pl1029",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "451348",
"author": "Justice",
"timestamp": "2011-09-09T16:12:27",
"content": "@Jeremy GrosserYour link is down. I was exceptionally curious in figuring out how one established the serial link. More info?",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,177.256165
|
||
https://hackaday.com/2011/06/03/diy-inkjet-printer-begs-to-be-hacked/
|
DIY Inkjet Printer Begs To Be Hacked
|
Mike Nathan
|
[
"Peripherals Hacks"
] |
[
"cnc",
"diy",
"open source",
"printer"
] |
[Nicholas C Lewis, Patrick Hannan, Jared Knutzen, and Joy Markham], students from the University of Washington, have recently taken the wraps off a project which they have been collaborating on,
a DIY inkjet printer
. The group set out to construct a low cost, open source inkjet printer for personal use that utilizes standard inkjet technology. Their working prototype, pictured above, satisfies all of those requirements, making it an ideal device for the at-home hobbyist.
The printer was constructed from easy to obtain components such as steel rods and stepper motors, along with other parts that can be printed using a RepRap or similar machine. An Arduino Mega manages the steppers and repurposed print head, recreating whatever Processing-generated image it has been given.
The printer is quite a hit so far, and people are already talking about adapting the design to print on spherical objects (think EggBot), to create direct etch resist PCBs, and more. We think it would make a great
direct to garment printer
with just a few small tweaks.
Check out the short video embedded below to see the printer in action.
[via
Make
]
[youtube=http://www.youtube.com/watch?v=fYeYeTGkvJM&w=470]
| 17
| 15
|
[
{
"comment_id": "401313",
"author": "twopartepoxy",
"timestamp": "2011-06-03T11:15:36",
"content": "nice work, i’m going to have a really good look at this, could use some of the mechanisms in similar projects.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401318",
"author": "Bogdan",
"timestamp": "2011-06-03T11:32:21",
"content": "Unimpressive… most of the technology of inkjet printing is in the print head… the part that they got readily made(the whole cartridge). The thing is as low cost as the cartridge/print head they are using, and if that is bought, it is not cheap enough. Think of cheap printers, they cost under $30 and a set of new cartridges will require $50 or more and print a handful of pages.I don’t really see not having something on the marked as a reason to make it. The reason why there are no kits available might be because of their lack of use…If i needed to use a printer for garment or pcb printing I’d be better off buying one and hacking it.Now, what i really want to see is something like CISS that works better, every time, without problems. That would make a low cost solution.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401329",
"author": "nes",
"timestamp": "2011-06-03T12:03:25",
"content": "Fairly certain direct print etch resist only works with Epson piezo type cartridges and the yellow ink they use, not the HP ones unfortunately. If someone has reverse engineered the mechanism for driving those, this could be a winner.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401331",
"author": "nk",
"timestamp": "2011-06-03T12:05:33",
"content": "@Bogdanthe reason the printers are dirt cheap is that the companies make revenue from the ink cartridges. Why do you think there are so many printers out there which does not let you refill and reuse the same cartridge or toner?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401343",
"author": "Zilog8",
"timestamp": "2011-06-03T12:09:44",
"content": "Injet is so 90’s. What we need is a DIY laser printer :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401345",
"author": "Bogdan",
"timestamp": "2011-06-03T12:13:38",
"content": "@nk,I know that. That is the actual problem. They have used a ready made cartridge, which is where the technology really is, and no matter which model you choose, it is expensive.If the design was about making a good quality, cheap printhead.. that would be a totally different story. But I think such a design is well beyond hobby level.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401381",
"author": "turn.self.off",
"timestamp": "2011-06-03T14:27:47",
"content": "if nothing else, it is a nice illustration of a ink jet at work.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401384",
"author": "kabukicho2001",
"timestamp": "2011-06-03T14:38:32",
"content": "i’d like to see a wireless micro robot-like printer with cameras accelerometer gps gyroscope inside.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401396",
"author": "am_i_evil",
"timestamp": "2011-06-03T15:33:36",
"content": "@BogdanYou still do not get it. Hacking and “fixable products” is not always about lower cost.An open printer is also designed to LAST longer, to be self-serviceable (or shop repairable), and as this article points out… easily customized.If something like this became a real standard, we have less needless waste and pollution.You admit you understand the manufacturer sells these things below cost. The manufacturer also designs inkjets to last very short times (went through 6 Epson printers in 8 years at my home). The manufacturer can afford to do this because of 2 things: vendor lock-in on expensive replacement ink, and taxpayer subsidized disposal of the device when it fails.(Fact is electronics are routinely mixed in with common trash, and must be sorted out at the local landfill. In essence, the taxpayer subsidizes the inkjet manufacturer’s profit model. This is both unfair and not sustainable.)I’m also not sure that non-disposable inkjet printers would actually cost more. Maybe initially, but print engines would go from being proprietary parts, to interchangeable commodity parts.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1236088",
"author": "Robert Eastwood",
"timestamp": "2014-03-04T08:46:24",
"content": "What amazes me, is the guy make a printer, that skips the basic problem, the size and cost of the ink cartridge, and as you mention, the longevity of the product really is the issue.There is no social reason for planned obsolescence it is a factor of capitalism trying to supply in a system where it has to create demand. (capitalism is built for markets that always have demand higher then production, and fails society when production capability is above demand, creating price fixing, and other methods to protect the production of products that are not helpful to society, but keep factories making things.)If someone is going to make a printer, increase the ink cartridge size while they are at it.Although I think all the printing issues and costs are intentional to get everyone to have to use digital systems that can have the content monitored and changed when someone is targeted by some agency.",
"parent_id": "401396",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "401401",
"author": "noah",
"timestamp": "2011-06-03T15:45:38",
"content": "It’s just a simple cartesian ‘bot, nothing special there. The neat bits are getting the print cartidge/head to do it’s thing on command. I’m a little sad that it has to be specific hardware that HP makes and could stop making…I remember the DIY inkjet post on here a while back.. possible combination?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401460",
"author": "Knightmare",
"timestamp": "2011-06-03T18:33:36",
"content": "Would be pretty easy to make it print a binder on to a resin powder bed for 3d printing too. Interesting.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401524",
"author": "pff",
"timestamp": "2011-06-03T22:54:00",
"content": "If you buy cheap crappy printers and don’t look after them of course they will break. I have an HP i bought over 7 years ago, it still prints perfectly fine and hasn’t ever broken down on me yet.I guess if your impatient with your printer and don’t take care of it, don’t keep it clean, sure its going to break. just like anything mechanical it has moving parts prone to failure, incorrectly loading paper, pulling out jammed sheets the wrong way, letting dirt/bits of cereal get in the gears all have a detrimental effect of the printer gizzards.I appreciate the project as a flat bed plotter type, as stated it would be useful for direct to garment printing among other things not suitable for the usual paper paths involved in printers, but i doubt the usefulness as an actual printer.Certainly claiming the project is “open source” is far from accurate. I remember a video about where they make the cartridges, and i would love someone to correct me but i remember a quote that the element inside the cartridge, for a very brief time, reaches temperatures hotter than the sun. A major amount of work goes into these cartridges, i would maybe have a think before having a go at printer companies.I am also sceptical about am_i_evil’s comment:why would a manufacturer design a product to sell below cost to break easily? It would make more sense to design it to last longer and make money selling ink for that printer than loosing more money on a printer and waiting for the test cartridges to be used up before a new one is bought. something doesn’t add up.My major concern about the project as is is with reusing ink cartridges.Without proper care and attention its very easy to end up with blocked nozzles from old and dried up ink.lastly..hard copy2011seriously guys get with the times",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1236099",
"author": "Robert Eastwood",
"timestamp": "2014-03-04T08:53:29",
"content": "Because a black room at a telecom can not see what you read when you read it on a printed page of paper.Because capitalism fails when there is less demand then production, and a quality printer with cheap ink, people would not need to buy any printers, and they would be out of business, so capitalism must create demand, and that hurts product quality to keep factories building stuff, to keep people working.It is price fixing so they have a market to sell to.Everyone could have a 300 dollar printer, at 1200 dpi, that prints hundreds of pages for a dollar of ink, but then people would be using paper communication.And they can’t censor, nor change, nor put different information for different groups when information is on a flyer or news letter.",
"parent_id": "401524",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "401603",
"author": "bothersaidpooh",
"timestamp": "2011-06-04T07:34:03",
"content": "I was just thinking about this, having nearly spent £44 on a set of new cartridges for my steam driven RX520 but luckily found bargain basement ones instead for the princely sum of £2 from Jessops.(i like these, you can stick any old Crapola Inc cart in there if it fits, and tape the old infinitely resettable chip back on!)My thought is to make a piezo driver based on two opposed sounder disks (the large ones found in old telephones work nice) driven at acoustic resonance as someone else has done on HaD.Fill that with ink and provide a very small hole at the base and you can print single lines of text at quite high resolution methinks.If you stacked up several dozen of these and combined the outputs (use old syringe needles from a printer refill kit or your friendly vet’s surgery who has a bunch of opened-but-unused ones) you could probably make a printhead.To make the essential micro sized hole I would feed the nozzles through a block of prepared bismuth-indium-tin alloy (BiInSn) in order to get a planar surface then if required lap the surface to ensure all the nozzles are straight.email me on mandoline atp cwgsy ddt net(substitute poison and phosphate to email)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401641",
"author": "Max",
"timestamp": "2011-06-04T11:41:11",
"content": "@am_i_evil: No, I think Bogdan got it just fine.If one’s aim is to get a printer of an arbitrary size/shape, or just play around with X-Y plotting mechanisms, then this does that just fine (well, not so fine, resolution-wise, actually).But if one’s aim is to break away from the expensive inks (apparently made from unicorn blood or something) and print heads in use today, than this fails to achieve that.As it has been said: if this would be a home-produced print head with cheaply available ink, it would be really important (but the technology of that is likely out of reach). As it is, it’s just a custom rigging for an existing print head, and of a lot less interest…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402373",
"author": "nes",
"timestamp": "2011-06-06T21:41:08",
"content": "Probably works better for him than this poor fellow’s printer:http://youtu.be/CSK1D3bZhRs",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,177.310889
|
||
https://hackaday.com/2011/06/02/the-laser-guided-wheelchair/
|
The Laser Guided Wheelchair
|
Jeremy Cook
|
[
"Transportation Hacks"
] |
[
"haptic feedback",
"laser",
"visually impaired",
"WheelChair"
] |
Using a scanning laser similar to those used in industrial safety systems, a
new wheelchair
developed by Sweden’s Luleå University of Technology allows those who are visually impaired to drive it without assistance. A driver is given haptic feedback as a navigation aid, reportedly similar to using a cane.
Although something like this is good in concept, this idea is already a working prototype. Doctoral student Daniel Innala Ahlmark (who is visually impaired himself) has already taken this wheelchair on a test run in his university’s busy Computer Science, Electrical, and Space Engineering Department. After this test run he remarked that he “felt safe like using a white cane.”
It’s really neat to see engineering and hacking skills put to use to help people who are impaired in some way (even cooler to see someone visually impaired helping with the process itself!). For more “hacks” related to helping people check out this
brain controlled wheelchair
, or this
mobility device
for kids.
| 10
| 9
|
[
{
"comment_id": "401171",
"author": "Hirudinea",
"timestamp": "2011-06-02T23:55:39",
"content": "This is somthing that should be commericalized PDQ!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401173",
"author": "Rick",
"timestamp": "2011-06-03T00:06:35",
"content": "I like the idea, but I would like to see more information about the haptic feedback device.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401231",
"author": "bothersaidpooh",
"timestamp": "2011-06-03T05:00:25",
"content": "I agree @Hirudinea, sounds like recycling HP printer scan assemblies might be a way to reduce costs.Could do the same with cheap webcams from AA1 and other small netbooks as the resolution needed is not very high- I looked into using these as a 3D microscope not so long ago and the only snag is connecting to two video streams on the same PC as the software doesen’t want to play nice.BTW HaD have you considered doing a monthly competition with a prize, a la 555 contest?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401253",
"author": "rsa",
"timestamp": "2011-06-03T07:03:22",
"content": "That is some clever use of 3DOF haptic device. The one in the picture is Falcon (http://home.novint.com/) which is low cost device geared towards gaming / consumer market.There are couple of libraries that you can use with Falcon in addition to their own SDK. One worth looking at is H3D (http://www.h3dapi.org/).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401366",
"author": "barry99705",
"timestamp": "2011-06-03T13:12:05",
"content": "How many can you fit in a B52??",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401376",
"author": "Miroslav",
"timestamp": "2011-06-03T13:57:11",
"content": "…And the laser used is harmless to human eyes?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "401431",
"author": "barry99705",
"timestamp": "2011-06-03T16:32:24",
"content": "Stop staring at the handicapped guy and you’ll be alright.Should be just as harmless as the lasers in the kinect.",
"parent_id": "401376",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "401378",
"author": "Garreth",
"timestamp": "2011-06-03T14:03:00",
"content": "GOALITH ONLINE",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401527",
"author": "pff",
"timestamp": "2011-06-03T22:59:25",
"content": "why not just have a normal wheelchair?it’s not like blind people have proper jobs to go to or anything, so they don’t really need to be anywhere, and most people are nice enough to get out of the way when they see one coming.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402229",
"author": "Alessandro",
"timestamp": "2011-06-06T13:17:40",
"content": "Speaking of haptic devices I’m still amazed by the possibility of these devices, like the one seen time ago on Instructables:http://www.instructables.com/id/Haptic-Feedback-device-for-the-Visually-Impaired/I suspect that a number of these devices tied to wrists, knees, head, back or seamed into clothing might open (possibly they do it already) new areas of support to sight-disabled people.It is amazing how the brain re-maps senses.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,177.835818
|
||
https://hackaday.com/2011/06/02/update-laser-powered-auto-focus-assist-version-2/
|
Update: Laser-powered Auto Focus Assist Version 2
|
Mike Szczys
|
[
"digital cameras hacks"
] |
[
"auto focus",
"laser pointer"
] |
We don’t know if our feature from a couple of days gave [Adrian] a kick in the pants, or if he was just on target to finish is writeup this week, but he’s posted about
version 2 of his laser auto focus assist project
.
The
original idea
was to use an unfocused laser pointer dot to give his DSLR auto focus feature a kick in the pants since the built-in light doesn’t come back on when photographing moving subjects. The original version worked, but he had to operate the laser manually and the hardware was kind of spread out all over the camera.
The latest version (2.0) can be seen above, housed in a project box that mounts to the hot shoe and keeps everything together in one package. The laser operation is now automatic, coming on when the shutter trigger is depressed half way, or when the auto focus enable button is depressed. The controls on the project box include an on/off switch as well as a potentiometer which varies the intensity of the laser.
It looks like this won’t be the last version of the hardware that we see. [Adrian] covers a few outstanding problems in his post. Most notably, the laser light is still a bit too strong. At a recent live event, another photographer took issue with the fact that his images included the red splotch from [Adrian’s] diy hardware.
| 12
| 12
|
[
{
"comment_id": "401142",
"author": "lokerin",
"timestamp": "2011-06-02T22:35:07",
"content": "actually the red splotch would be good if you frequently are hired as the photographer for a event where there is no other photos that are supposed to be taken. dance recitals, plays and musicals",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401149",
"author": "b0b",
"timestamp": "2011-06-02T22:48:00",
"content": "A red splotch on his photograph?Could be a hot pixel or ketchup. ;D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401169",
"author": "Aki Korhonen",
"timestamp": "2011-06-02T23:49:25",
"content": "I did an AF-assist light for my Nikon D2H a couple of years ago and I used the shutter release pin from the cable release connector. I figured out that I could get the button information from there to activate the led automatically when the button is pressed.The case should be the same with Canon cameras too that the lines are at somewhere around 5 volts when the shutter button isn’t pressed and they get grounded when the button is pressed half-way down and fully down.I added a new schematic on my old AF assist light page on my website (http://akikorhonen.org/projects.php?action=view&id=648) that I haven’t tested yet but it should work in theory. Try out on your own risk.1) When button isn’t pressed, the bases of T1 and T3 are high (T1 is an inverter for T2’s base) so T2 is low and the led is off.2) When button is pressed half-way down for focusing, the focus line pulls T1’s base low and T2 goes up and the led turns on.3) When button is pushed all the way down, the shutter line goes low and T3 turns off turning the led off.Using the flash shoe’s pin isn’t a very good idea because it gets pulled low when the shutter is fully open, the shutter line goes low immidiately with the button.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401255",
"author": "Renee",
"timestamp": "2011-06-03T07:09:09",
"content": "Had no idea people standing still in front of a laptop were hard to focus on. I thought this was suppose to be for no light fast moving objects?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401321",
"author": "fartface",
"timestamp": "2011-06-03T11:48:43",
"content": "there is TTL data coming out of the flash hot shoe to give all the information needed",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401323",
"author": "fartface",
"timestamp": "2011-06-03T11:51:28",
"content": "I knew something existed….http://www.google.com/products/catalog?hl=en&client=firefox-a&rls=org.mozilla:en-US:official&biw=1380&bih=702&q=promaster+module+canon&bav=on.2,or.r_gc.r_pw.&um=1&ie=UTF-8&tbm=shop&cid=2440619961068919880&sa=X&ei=hcroTcHHK8jj0gG2hL3CAQ&ved=0CFMQ8wIwAQuses IR so you dont get red blotches",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401324",
"author": "steve",
"timestamp": "2011-06-03T11:54:03",
"content": "Stupid. He should use a laser grating to create a holographic pattern as Sony did for their “Hologram AF”. Furthermore, the laser he uses is far to dangerous to use in this kind of application. This needs eyesafe uW laser. And if it shows up on other peoples photos, it’s obviously garbage.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401325",
"author": "Adrian",
"timestamp": "2011-06-03T11:54:56",
"content": "Yes, there is TTL data coming out of the flash hot shoe, but to my knowledge there is no publicly available standard on how to decode that data.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401351",
"author": "Bogdan",
"timestamp": "2011-06-03T12:32:06",
"content": "Why not use white light? White light might be less distracting on most pictures. My nikon D90 has a white AF light. You could use some narrow angle white led…The problem with the strong and concentrated AF lights is that the also bother the ones photographed. I know many cameras(usually compact ones) that have spots of red/green/orange lights that are very annoying when when pointed at someone’s eyes.My external flash does not put a concentrated spot but rather a larger grid which i find not annoying when looking at.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401375",
"author": "Garbz",
"timestamp": "2011-06-03T13:49:32",
"content": "@steve laser pointers are generally weak enough and he has dramatically defocused the beam too spreading the power over a large area. This is not dangerous.Also everyone’s focusing light shows up on other people’s photos. Try not to take photos while other people are focusing is always a good trick. You should see how bright the AF assist lights on many flashes really are.This is a neat hack.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401645",
"author": "The Ideanator",
"timestamp": "2011-06-04T12:49:42",
"content": "Why not use an IR laser? It won’t show up except on others photos, stealth AF!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "2487253",
"author": "Dominick",
"timestamp": "2015-03-20T13:30:22",
"content": "There may be big differences in performance based on the type ofdevice used to view your site. Internet Marketing Advice For Beginners And Newbies.The overall idea is to make such an impact that people will think that the only company with the potential is yours.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,177.362863
|
||
https://hackaday.com/2011/06/02/fan-throttling-for-ps3-temperature-control/
|
Fan Throttling For PS3 Temperature Control
|
Mike Szczys
|
[
"Playstation Hacks"
] |
[
"7 segment",
"arduino",
"fan",
"ps3",
"thermistor"
] |
This setup will let you
monitor Play Station 3 temperatures and throttle the cooling fan accordingly
. [Killerbug666] based the project around an Arduino board, and the majority of the details about his setup are shared as comments in the sketch that he embedded in his post. He installed four thermistors in his PS3 on the CPU heatsink, the GPU heatsink, the Northbridge or Emotion Engine, and one in front of the air intake grate to measure ambient room temperature.
Above you can see the setup he used to display temperatures for each sensor on a set of 7-segment displays. The project also includes the ability to push this data over a serial connection for use with a computer or a standalone system.
The project is still in a prototyping stage. It works, but he likens the fan throttling to the sound of a car engine constantly revving. Future plans include smoothing out the fan speed corrections and scaling down the size of the hardware used in the system. We’d suggest doing away with three of the displays and adding a button that lets you select which set of sensor data you’d like to display.
[Thanks User]
| 10
| 10
|
[
{
"comment_id": "401115",
"author": "PoopieHead",
"timestamp": "2011-06-02T21:29:28",
"content": "PID is usually the ideal solution for this kind of thing. Best of all, he probably already has the “P” part of this down with his current design…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401144",
"author": "pff",
"timestamp": "2011-06-02T22:39:21",
"content": "wow…..code has some way to go. pretty messy in there.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401158",
"author": "Life2Death",
"timestamp": "2011-06-02T22:54:52",
"content": "What the hell, why not use a thermisistor?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401200",
"author": "Tony",
"timestamp": "2011-06-03T02:34:34",
"content": "@Life2Death, he is using a thermistor, but only to sense temperature, not to directly control fan speed.PWM is a better way to control speed, I’m assuming that’s how he does it since I didn’t really want to look thru all that code for the bit that actually did something.@PoopieHead, PID control is overkill, you don’t really need to hold the temperature at an exact level. And it’s not as easy as people think.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401233",
"author": "dext0rb",
"timestamp": "2011-06-03T05:20:13",
"content": "if(0<1)print \"too many if statements :p\"",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401243",
"author": "Knuckleballer",
"timestamp": "2011-06-03T06:01:10",
"content": "Ps3’s run SO hot. If there is any device that is actually worthy and quite possibly in need of a liquid cooling unit. This is it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401273",
"author": "smoker_dave",
"timestamp": "2011-06-03T07:53:49",
"content": "“And it’s not as easy as people think”Statement is wrong. Take some time to look on Google for PID tutorials and you will see it is very easy.My suggestion would be to do away with the 7-segment displays all together. All you need is four bi-colour LEDs that show green if the component temp. is within a defined margin from the ambient sensor and red when the component goes outside of that margin.You will also need to add some hysteresis into this design as I’m sure you will find out.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401297",
"author": "depeje",
"timestamp": "2011-06-03T10:37:48",
"content": "Make sure Sony doesn’t come and get you.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401487",
"author": "defyboy",
"timestamp": "2011-06-03T20:02:24",
"content": "Redundant.The PS3 has internal temperature monitoring and fan speed control.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401550",
"author": "tantris",
"timestamp": "2011-06-04T00:34:00",
"content": "before arduinos people would carve their own pwm controllers out of driftwood and then walk 10 miles uphill through the snow to mine some lead for the solder.http://www.nomad.ee/micros/pwm555.html-no ntc however, one would have to add that. and unless you place the thermistor directly into the air stream of the fan without connecting it to a heat sink the whole thing will not oscillate.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,177.487529
|
||
https://hackaday.com/2011/06/02/cube-solving-robot-shatters-the-world-record/
|
Cube Solving Robot Shatters The World Record
|
Mike Szczys
|
[
"Robots Hacks"
] |
[
"rubik's cube solver"
] |
This cube-shaped bot just
shattered the robotic Rubik’s Cube solving record
by about 8 seconds. It did it in a blazing 10.69 seconds to best the old record of 18.2 seconds. There was immediate confusion here at Hackaday as some of us thought the record was actually around six seconds. And it is, for humans. That’s right, the human record holder completed a cube in 6.24 seconds…
faster
than a robot by almost four seconds. It’s surprising that we can still beat mechanized devices at some repetitive mechanical operations.
Take a look at the speed run shown in the video after the break. What strikes us is that the motions are incredibly efficient, and the bot is very quite. Compare that efficiency to
CuBear
, a solver that uses a different motor for each side of the cube. That one doesn’t need to grip the cube making us think it could beat this version if the firmware were quite a bit faster.
[youtube=http://www.youtube.com/watch?v=oWtBTKpWVXk&w=470]
[via
Physorg
and
Reddit
]
| 36
| 33
|
[
{
"comment_id": "401073",
"author": "lightningflashfire",
"timestamp": "2011-06-02T20:08:43",
"content": "The guy who holds the current world record was allowed to analyze the cube for as long as he wanted before he physically solved the cube. The robot creates an algorithm on the fly, the human does not. Who is the real winner?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "2717678",
"author": "bunedoggle",
"timestamp": "2015-09-16T18:55:36",
"content": "If you let the computer study it then it takes this machine one second to solve it:https://youtu.be/laPVTrzGDpA",
"parent_id": "401073",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "401078",
"author": "Robo",
"timestamp": "2011-06-02T20:21:53",
"content": "Impressive! What a great student project",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401087",
"author": "Wile E. Coyote",
"timestamp": "2011-06-02T20:37:37",
"content": "Very cool, but I was not aware that people still cared about the Rubik’s Cube. Either way, it is very impressive!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401088",
"author": "masterburner",
"timestamp": "2011-06-02T20:38:09",
"content": "Wow, cool project. Very solid and fast movement of the robot arms. I wonder what their budget was…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401089",
"author": "Jac Goudsmit",
"timestamp": "2011-06-02T20:38:12",
"content": "The robot is very _quiet_",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "798769",
"author": "Galane",
"timestamp": "2012-09-28T05:21:48",
"content": "It’s quite quiet.",
"parent_id": "401089",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "401091",
"author": "Bogdan",
"timestamp": "2011-06-02T20:48:10",
"content": "The robot is impressive…but let’s not think that we cannot build a machine that solves it faster. All this would need is faster mechanical components. The movement is the one that takes time, analyzing the image needs very little resources considering that the camera is fixed. And computing the solution is nothing for a normal home computer.Also, i’m a bit confused about comparing the timings. Are they compared by starting with cubes scrambled in the same way?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401093",
"author": "Darkstar",
"timestamp": "2011-06-02T20:52:21",
"content": "“…and the bot is very quite.”That makes even me cringe, and I’m not even a native English speaker ;-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401094",
"author": "Dax",
"timestamp": "2011-06-02T20:53:03",
"content": "Of course it is quiet – they put a plexiglass box around it to block the sound.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401097",
"author": "gdogg",
"timestamp": "2011-06-02T20:56:29",
"content": "quite quiet",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401098",
"author": "Thomas Grainger",
"timestamp": "2011-06-02T20:56:44",
"content": "What about CubeStormer?http://www.youtube.com/watch?v=f1y1m6YLnu8that’s sub 10 seconds and made of lego",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401099",
"author": "Effigy",
"timestamp": "2011-06-02T20:57:13",
"content": "Certain starting conditions can lead to very expedited steps in such a procedural approach and therefore a time such as 6 seconds can safely be assumed to have been a very lucky start mix up and a very good solver.Additionally, a computerized solver CAN implement the ideal algorithm which is simply a lookup table of all possible permutations and the fastest solution for the machinery, whereas a human will always need to follow a procedural approach.My point is that, if you were comparing any sort of data whatsoever, rather than the two extremes, saying that humans solve cubes faster than machines is pretty wrong…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401100",
"author": "Matt",
"timestamp": "2011-06-02T21:02:05",
"content": "I would just like to let you know that for robots the time the get to scan the cube is still counted in their time. For humans the can look at the cube before the time is started.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401105",
"author": "twopartepoxy",
"timestamp": "2011-06-02T21:10:08",
"content": "i need to take all the stickers off the squares and stick them back on again.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401106",
"author": "poslathian",
"timestamp": "2011-06-02T21:10:36",
"content": "This is awesome. Although I could have sworn the human cube record was faster than 10s. It looks like the machine only images one face. Does that mean it spends moves to capture the cube state?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401112",
"author": "crenn",
"timestamp": "2011-06-02T21:24:09",
"content": "From my limited understanding of the robot, it scans 3 sides of the cube with the camera, works out the moves required to solve the cube and then executes them.As for humans doing it faster. I bet you the ‘fastest’ human if given a completely random cube, they will take a lot longer than 10s to solve.-CrennStudent at Swinburne Uni",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401125",
"author": "silvesterstillalone",
"timestamp": "2011-06-02T21:59:43",
"content": "@Effigya minor point, a lookup table to solve a cube would be terriby inefficient. it would have 43,252,003,274,489,856,000 entries each with up to 20 steps.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401127",
"author": "Sea Shadow",
"timestamp": "2011-06-02T22:05:09",
"content": "@Thomas GraingerI was thinking the same thing, cubestormer has been around for ages too. Plus it has an auto-loader.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401147",
"author": "Hirudinea",
"timestamp": "2011-06-02T22:45:24",
"content": "First the chess playing robot, then the juggling robot and now this, three robots that can do things I can’t! I feel so inadequate! :.(",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401156",
"author": "Jac Goudsmit",
"timestamp": "2011-06-02T22:53:33",
"content": "What I would like to see is a robot that takes a Rubik’s cube apart and reassembles the parts in record time. That’s the way MOST people solve it, right? ;-)===Jac",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401159",
"author": "Vince",
"timestamp": "2011-06-02T23:05:04",
"content": "I think we need to make a robot that takes the stickers off and re-attaches them, and then compare that to a human. :)The computerized solution will inevitably be faster for this approach to solving, because when in boils down to it, the rubiks cube solution is just an algorithm, which computers are very good at running through. With some really good programming and enough processing power, the bottle neck then becomes the physicality of a rubiks cube.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401162",
"author": "gmcurrie",
"timestamp": "2011-06-02T23:20:07",
"content": "@Egffigy – “simply a lookup table of all possible permutations”http://en.wikipedia.org/wiki/Rubik%27s_Cube#Permutations“The puzzle is often advertised as having only “billions” of positions, as the larger numbers are unfamiliar to many. To put this into perspective, if one had as many 57-millimeter Rubik’s Cubes as there are permutations, one could cover the Earth’s surface with a layer 275 cubes thick.”That’s some lookup table : )",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401163",
"author": "Hackerspacer",
"timestamp": "2011-06-02T23:22:15",
"content": "“It’s surprising that we can still beat mechanized devices at some repetitive mechanical operations.”For now.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401188",
"author": "jarrod",
"timestamp": "2011-06-03T01:21:07",
"content": "Using a faster camera would knock off about 2 seconds, looks like its fairly slow at the start to allow the camera to get a clear image.Also, are they intel heatsinks at the base of the cube clamps?With metal clamps and more powerful servos, the only limit would be the mechanical reliability of the cube itself. and whatever time it takes for the image capture and analysis.2nd aussie uni project featured this week. woo",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401211",
"author": "Peter",
"timestamp": "2011-06-03T03:14:22",
"content": "CuBOT would probably not be eligible. In the form linked to in this article at least, it requires modification of the cube which, in most reasonable records/tests should disqualify it.Unless, maybe they counted the scrambling stages.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401235",
"author": "Joe",
"timestamp": "2011-06-03T05:25:06",
"content": "Who cares what color the squares are… It looks prettier all jumbled up. NOT impressed.When a robot gets two layers done, then puts it down and goes to watch TV because the thrid layer just isn’t worth the effort… THEN I’ll be impressed.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401240",
"author": "Ocau-er",
"timestamp": "2011-06-03T05:43:00",
"content": "From one of the team himself.http://forums.overclockers.com.au/showthread.php?t=962866",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401244",
"author": "Knuckleballer",
"timestamp": "2011-06-03T06:04:44",
"content": "6.24 seconds!! That sounds like stupid luck to me!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401245",
"author": "Raymond",
"timestamp": "2011-06-03T06:08:24",
"content": "@DaxI don’t believe the plexiglass box is blocking very much sound. You can still hear the rubix cube when the robot shifts the tiles around.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401269",
"author": "Andrew",
"timestamp": "2011-06-03T07:42:15",
"content": "I believe you meant “quiet” not “quite”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401442",
"author": "japkin",
"timestamp": "2011-06-03T16:53:45",
"content": "It cheated. It watched him mix up the cube beforehand. Sneaky bastard.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "2716520",
"author": "macw",
"timestamp": "2015-09-16T02:37:26",
"content": "+1",
"parent_id": "401442",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "401449",
"author": "Brennan",
"timestamp": "2011-06-03T17:53:45",
"content": "@KnuckleballerIt’s FAR from luck.Also, I love the way the robot tilts the cube at the end after it solves it. Nice little touch.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401488",
"author": "Thierry",
"timestamp": "2011-06-03T20:07:20",
"content": "6 second world recordhttp://www.youtube.com/watch?v=t32VQ2HeELA",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "798636",
"author": "Jake",
"timestamp": "2012-09-28T01:16:48",
"content": "Solves in 5.352seconds, made from lego, epic song.Your arguments are invalidhttp://www.wimp.com/robotsolves/",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,177.571015
|
||
https://hackaday.com/2011/06/02/edward-the-vehicle-of-the-future/
|
EDWARD The Vehicle Of The Future
|
Nick Schulze
|
[
"Transportation Hacks"
] |
[
"diwheel",
"edward"
] |
If there was a competition for coolest transportation device for the future, the diwheel would be at the top of the list with hover cars and teleportation. Over the past 3 years students at Adelaide University have been working on an
E
lectric
D
iwheel
W
ith
A
ctive
R
otation
D
amping or
EDWARD
.
EDWARD is an entirely electric diwheel, the operator is strapped into the bucket seat between the two large wheels with a 5 point harness and can control the machine with a gaming joystick. Full dynamic stability and slosh control allow the operator to maneuver the vehicle at up to 40km/hr, inversion control even allows you to drive upside down (if you are that way inclined). The next question is just where can we get one? Check out the video after the break for a demonstration of EDWARD in action.
[youtube=http://www.youtube.com/watch?v=Uf6Gh-hPDeo&&w=470]
| 57
| 50
|
[
{
"comment_id": "401038",
"author": "Taylor Alexander",
"timestamp": "2011-06-02T19:08:42",
"content": "I feel like this is an appropriate time for me to ask this:Can we stop assuming that all robotic/mechanical things need acronyms for names? Its sooooooo overplayed. This has always been a major peeve of mine.The last few robots I built were named Fred and Edgar. No acronyms, just nice names.Anyway, not trying to troll, this has just always been something that annoys me. Thought I would see what other people think.Thoughts?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6692376",
"author": "Rick Talmer",
"timestamp": "2023-10-19T06:42:11",
"content": "🤣🤣🤣 Sorry you’re in the wrong place for Comedy.",
"parent_id": "401038",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "401042",
"author": "Taylor Alexander",
"timestamp": "2011-06-02T19:13:29",
"content": "Sorry, not trying to be negative. The project is certainly awesome!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401043",
"author": "P",
"timestamp": "2011-06-02T19:14:08",
"content": "I feel as though I have seen this somewhere before…http://en.wikipedia.org/wiki/The_Entity_%28South_Park%29",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401047",
"author": "elektrophreak",
"timestamp": "2011-06-02T19:22:19",
"content": "oh no, it looks like that contraption from South Park… :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401048",
"author": "DanJ",
"timestamp": "2011-06-02T19:22:39",
"content": "Very cool. But am I the only one who immediately thought of South Park and winced?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401049",
"author": "elektrophreak",
"timestamp": "2011-06-02T19:22:55",
"content": "I found the link for it:http://en.wikipedia.org/wiki/The_Entity_%28South_Park%29",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401052",
"author": "madcows",
"timestamp": "2011-06-02T19:26:30",
"content": "So it’s sort of like a Segway in a can? At 40kmh, I’d have to imagine that the brakes do nothing more than cause you to tumble into whatever is in front of you.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401054",
"author": "Shining",
"timestamp": "2011-06-02T19:29:08",
"content": "Segway style stabilization should work to keep it more managable",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401059",
"author": "John",
"timestamp": "2011-06-02T19:34:18",
"content": "hmm, someone cobble together a parts/price list for a DIY version of this. There really isnt anything complicated going on there.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401060",
"author": "blackspyder",
"timestamp": "2011-06-02T19:39:20",
"content": "Need one of these for burningman. =]",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401066",
"author": "ralf",
"timestamp": "2011-06-02T19:50:36",
"content": "Do want!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401067",
"author": "fluxster",
"timestamp": "2011-06-02T19:54:09",
"content": "it is me or is there no way to steer this thing? or is steered like a tank..like they said a la joystick!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401070",
"author": "johnmc",
"timestamp": "2011-06-02T20:00:34",
"content": "Might be a useful transport in inner cities as its parking footprint is reasonably small in a two seat configuration. The problems I see are that the wheel buggies have insufficient clearance for real world use. Ground clearance would need to be increased as well.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401072",
"author": "Aaron E.",
"timestamp": "2011-06-02T20:03:30",
"content": "I guess with proper use of forward and backward wheel power you could prevent yourself from simply rolling forward on a sudden stop.Seems pretty cool, but I imagine they’ll be as common as segways…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401080",
"author": "Ren",
"timestamp": "2011-06-02T20:29:09",
"content": "I’d like to see one go down the Spanish Steps in Rome!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401084",
"author": "MrJodie",
"timestamp": "2011-06-02T20:33:55",
"content": "Okay, so now what we want to know is… 1) Are they going to improve the top speed? 2) How long does the battery last? and 3) Will Congress give special vouchers for saving fuel and being REALLY cool?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401085",
"author": "Pilotgeek",
"timestamp": "2011-06-02T20:34:05",
"content": "Thank you, South Park.http://3.bp.blogspot.com/_110wcPq1TEY/S6qRezZL2WI/AAAAAAAAGMY/SieIFO2TgDo/s400/south_park_it.gif",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401101",
"author": "xorpunk",
"timestamp": "2011-06-02T21:03:07",
"content": "expect to pay at least 4k for something that costs hundreds to manufacture..go buy a smart car or motorcycle for 5k more..brand new.I’m surprised DOT would pass this..what happens when one of the wheels gets a locked bearing? or you hit a bump at street speed? Hope you like brain damage and gforce..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401110",
"author": "DudeGuy",
"timestamp": "2011-06-02T21:17:19",
"content": "Now I can drive to the store AND get terrible motion sickness?!? Sign me up!In all seriousness though, if this thing were stable, it would be pretty nice.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401116",
"author": "Tony",
"timestamp": "2011-06-02T21:35:44",
"content": "I always wanted a monocycle until I saw how dangerous they were.I still want one, just not as much.At least with bolting two of them together you can see where you’re going…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401124",
"author": "Ross Barnes",
"timestamp": "2011-06-02T21:51:11",
"content": "Great design. The principles of engineering are not new but the lateral way they have been cobbled together is inspiring. I am sure this prototype can be improved and has potential as an alternate means of short distance commuting. It also has some useful concepts that may be incorporated into wheelchairs. Trust Australians to come up with a segway type vehicle that you can sit in. Congratulations to Adelaide University and the team.Ross",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401145",
"author": "Hirudinea",
"timestamp": "2011-06-02T22:39:58",
"content": "Well its a good thing you can drive it upside down, saves you from puking on yourself.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401148",
"author": "MrX",
"timestamp": "2011-06-02T22:46:41",
"content": "Is someone else also thinking in ROLLCAGE!!! Old school games apart, this is a really really nice build..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401167",
"author": "Retroplayer",
"timestamp": "2011-06-02T23:38:50",
"content": "I’m surprised nobody mentioned Jimmy Neutron’s vehicle. I have the RC version of it that Radioshack sold. And yes, it operates like a tank.With the toy, anyway, the rider sits steady due to the center of gravity being below the center of the wheel.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401172",
"author": "bacchus",
"timestamp": "2011-06-03T00:00:20",
"content": "This is bollocks.There are a number of these things on the Internet, involving either 1 or 2 large wheels. They all suffer from the same problem – Tumbling, which is at its worst when you need it least, followed swiftly by crashing.There’s no way to stop them tumbling apart from sticking something out to stop the rotation, which kind of loses the cool quotient.Segway-type control isn’t going to help much as the dynamics are quite different.Sure, they’re funny – There’s a youtube of a car of similar but larger construction, and guess what? It can’t stop either.40kph and an oldster walks out, say, 10 metres further down the road, or even 20. Whadda you gonna do? Pray your victim’s descendents are physically unfit and don’t have anger management issues? Stick out a piece of two by four?I hope they learned a lot from this, not least Newton’s laws of motion (as in “Yerrr canna change…).Vehicle of the future? Purleezzz…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401179",
"author": "Kevin",
"timestamp": "2011-06-03T00:33:29",
"content": "an electric scooter is better,and its from the past",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401184",
"author": "drphill",
"timestamp": "2011-06-03T00:51:00",
"content": "Cool, but it’s billed as the vehicle of the future? As cool as it is to stand it on its head and the like, what is the vehicle of the future going to be used for? Lets see it do normal stuff too like drive straight lines and navigate turns, climb and descend hills, you know, more than circles in a parking lot. Nice toy but not likely to be vehicle of the future. Obvious stability issues there.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401185",
"author": "jarrod",
"timestamp": "2011-06-03T00:58:23",
"content": "@bacchus well with decent programming tumbling can be prevented, just program it not to exceed the most efficient stopping angle, which wold be when the C.G of the carriage is as far back as possible ie, when the carriage is tilted 90 degrees backwards. its like ABS, where tumbling is analogous to a 4 wheeled vehicles wheels locking up and skidding (although the dynamic friction of a skidding car will have a greater stopping power than tumbling.. that makes it even more important to prevent tumbling) of course the vehicle will have a minimum stopping distance at a particular speed, but every vehicle does..I think I know which youtube video you are thinking of, its a single wheel “monocycle” right? that one fully relied on human control and had a petrol engine for propulsion. it didnt handle stopping very well, as soon as the carriage tipped back more than 90 degrees, the CG of the whole contraption was so high above its rotating axis that the gyroscopic effect of the wheel could no longer keep it stable (single wheel remember) that it would wobble all over the place then flip in ways it was not designed to and.. you would not want to be the driver.I made a hampster-ball robot back in 2004 for a high school project. never did anything more advanced than direct remote control, but the physics of it was similar, just with another dimension of rotation added. it was a PITA to control manually, would always oscillate as it had no feedback to cancel it out (behaved just like at the start of this video, where the carriage would rock forward and backwards) it would also tumble with disastrous effects as there was no system to prevent it.At the end of the day this is not really anything more than an experiment. the stopping distance is rather large because it relies on the offset mass of the carriage to stop.. it would be interesting what stopping distance these guys calculated and achieved on their prototype.The only use I can think of for something like this is maybe extraterrestrial terrain, where you could have two huge wheels, or a ball which will be less likely to get stuck.hm sorry about the long post guys",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401196",
"author": "bacchus",
"timestamp": "2011-06-03T02:10:47",
"content": "@jarrodThere are loads of things like this all over the place.It isn’t the same as anti-lock brakes, which actually work using the time honored technique of “cadence braking” which seeks to keep the braking force as high as the contact patches of the tyres can handle. In short, it seeks to make the most efficient use of what you have.In your scheme, braking force is reduced to prevent tumbling. In other words, one of your prime safety systems degrades itself when you most need it to overcome a basic deficiency of the design. That this degradation will be variable according to your circumstances is just going to add to the unpredictability of the vehicle. Suppose your road car varied the amount of braking force it allowed you to apply to the contact patch? You can’t overcome bad design with control systems, although they can obviously help except in tragic designs like this.If you have access to a car with ALB, try standing on the brakes in a corner with ALB on, then with it switched off. You may well find you prefer the handling with it switched off. So may your underwear :). In the unlikely event you enjoyed that, try the same thing on an ALB-equipped motorcycle. It’ll brown your trousers for sure…The only way I could see this turned into “The vehicle of the future” is if you could apply a contra-rotating force to the chassis, for instance using a flywheel of some sort. The obvious snag with this is that you would end up using something between a big, heavy, slowly rotating, flywheel, and a small, light, very rapidly rotating version of same. Getting the right compromise here would be vital if you intend to turn corners, or you would experience a “funeral precession”, if you’ll pardon the pun.Of course this is a tongue-in-cheek project, presumably to learn about control systems rather than turn out a usable product. It just seems like poor engineering to me, as well as a joke that’s been done so many times that it just isn’t funny anymore.I used to be very interested in “feet first” motorcycles, which suffer from a different but related dynamic flaw, and they’ve pretty much disappeared now, in spite of some pretty intense development, apart from that Swiss abortion with training wheels that automatically deploy when you go slowly, and Harleys, which have a low seat height that helps you use your legs more effectively.I note that no extra-terrestrial vehicles so far have used anything other than good ol’ wheels, and lots of ’em :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401208",
"author": "Cabe",
"timestamp": "2011-06-03T03:05:51",
"content": "Looks more like the Hailfire droid tanks from Star Wars.http://starwars.wikia.com/wiki/IG-227_Hailfire-class_droid_tankAnything that tried to take out Jar Jar Binks is all right in my book.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401209",
"author": "jarrod",
"timestamp": "2011-06-03T03:06:56",
"content": "@bacchus“In short, it seeks to make the most efficient use of what you have.” thats exactly what I was describing, you will have the maximum deceleration when the mass is as far back as possible. if the angle is any more or less than 90 degrees braking force is reduced. think about it.yes it is using a control system to overcome a less than ideal situation, but it will make control better, especially in emergency situations where the default human response would be to jam on the brakes, causing you to tumble. I was only using the ABS analogy as an.. analogy.agree with everything else you said.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401210",
"author": "jay",
"timestamp": "2011-06-03T03:09:07",
"content": "Great job EDWARD Team! So what if there is not practical application for this vehicle? It looks like a great learning experience for engineering students who will take what they learned in this project to more practical designs for automobiles, aircraft and pretty much anything else that “goes”.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401212",
"author": "Cynyr",
"timestamp": "2011-06-03T03:20:19",
"content": "@BacchusMy car does reduce the braking force that it can provide with a set contact patch, well the weather does, it’s called snow.I agree with you about ALB in a corner though, first time you do that on snow and find yourself in oncoming traffic is scary, although I have to wonder if i would have spun otherwise.As for the ETVs using wheels, that’s a simple answer; the fewer the moving parts the less to break. Most of them are hub motors as well.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401213",
"author": "haexn",
"timestamp": "2011-06-03T03:31:29",
"content": "I wanted to see it go 40 mph ( or kph can’t remember). I don’t really care that it can go upside down or in circles.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401250",
"author": "Max",
"timestamp": "2011-06-03T06:54:27",
"content": "I can imagine such a vehicle not with a pair, but with a double pair of wheels. Normally, the doubles would stay perfectly concentric with the original wheels (behaving like a single set of slightly wider wheels), but as you try to brake, they could start extending forwards, effectively giving you a conventional 4-wheel platform to break on. Obviously, keeping “concentricity” might be a bit of an issue – this could be alleviated by sacrificing one more bit of coolness and making the second set of wheels slightly smaller than the original (that way they would be guaranteed not to interfere with the main wheels when approximately concentric).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401251",
"author": "Max",
"timestamp": "2011-06-03T07:02:38",
"content": "Another idea might be to create an “inner rim” on which the flexible tube of the wheel runs around, normally held stiffly circular by ex. hydraulic pressure. On braking, however, the rim might be partially “deflated” effectively distorting the wheel shape into something that now has a longer surface of contact with the ground (like an initially circular thread flattened into conventional tank shape) instead of a single point.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401252",
"author": "JDN",
"timestamp": "2011-06-03T07:02:57",
"content": "I don’t see why you can’t achieve the same thing with normal spoked wheels and hub motors. Maybe not as cool looking but functionally the same, much simpler and less vulnerable to mud and muck in the bearings.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401256",
"author": "Max",
"timestamp": "2011-06-03T07:13:42",
"content": "Ok, final suggestion – I promise to shut up now. It seems to me that the passenger seat is currently solidly mounted inside the wheel-bearing frame. What if it were actually mounted on a hinge placed somewhere “high up” in the frame? This would allow to swing the whole seat well outside the circle of the wheels – sure, it would have to be very tightly controlled to avoid hard hits of the “swung out” seat/cage on the road surface when the vehicle tends to roll over, but this doesn’t sound more complicated that what they are currently doing (or a segway balancing).However, a seat/cage “swung” well back would actually give you the equivalent full braking capacity of any conventional vehicle on their front wheels, at the point when their back wheels start lifting from the ground (in other words, “huge”, and probably more than what the wheels can handle without starting to skid anyway).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401260",
"author": "Max",
"timestamp": "2011-06-03T07:19:09",
"content": "@JDN: you certainly could – I think the main difference is that in this design, you could conceivably make a two-seat version where the seats were actually extending _into_ the wheels, while a set of spoked wheels would always have to extend sideways from the frame. Probably not _all that big_ of a difference in width, though…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401268",
"author": "BOB d",
"timestamp": "2011-06-03T07:41:10",
"content": "vevy gool but can you actually move from point A to point B with that thign since the whole demostration was just spinning the thing arrounf on a small area. Never saw it actually move steadily forward or backwards.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401275",
"author": "Fogger",
"timestamp": "2011-06-03T08:04:40",
"content": "One way to counteract the acceleration and braking forces would be to add a significant number of batteries to it, and then shift the weight of the batteries forward or backward as needed. It would also have the side effect of increasing the range and possibly top speed. But since the rider would be heavier than the batteries, why not slide the whole seat & rider forward and backwards.Another option is to modify it into a tracked vehicle. This would add a lot more grip, as well as add stability while accelerating or braking. That would make it more practical, but probably not as much fun.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401280",
"author": "Pinky",
"timestamp": "2011-06-03T08:48:14",
"content": "Whoever asked for a parts list – read the final report, it’s very detailed with names and sources for all parts. <3 Pinky",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401328",
"author": "steve",
"timestamp": "2011-06-03T11:57:54",
"content": "Plain awesome. Wish I had one…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401361",
"author": "FaPPeR",
"timestamp": "2011-06-03T13:06:17",
"content": "I’d want to see that contraption climb a hill",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401380",
"author": "dcept905",
"timestamp": "2011-06-03T14:17:30",
"content": "I love all the trolls who criticize and can’t even be bothered to read. Questions about stopping distance as well as stabilization are all completely discussed in their report. Yes, there’s a BOM too that shows the build cost. “Hackers” that can’t even be bothered to read for themselves… awesome. On a more positive note: Awesome build! Ignore the criticism from asshats b/c no matter what they say, that’s one hell of an accomplishment!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401409",
"author": "jarrod",
"timestamp": "2011-06-03T16:00:56",
"content": "@dcept905what page of the final report does it outline stopping distance? must have missed it the first time.All I found is that they have a manual emergency brake, which would not be fun to use at 40km/h.I suppose for the non-emergency brake system the slosh control would have some angular limit programmed in (for non-inverted mode :P), although I cant find mention of it.yeah epic project though. really nicely made and designed",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401466",
"author": "tantris",
"timestamp": "2011-06-03T18:58:12",
"content": "@taylor: i assume taylor stands for “tired of acronyms yet likes other robotics”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401540",
"author": "nicotrial",
"timestamp": "2011-06-03T23:42:16",
"content": "seems more stable when up side down to drive…..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401581",
"author": "Vampyredh",
"timestamp": "2011-06-04T04:29:19",
"content": "I think a weight maximizing the stabilization to keep you sitting straight and a nice shell for rain would make this thing nice. Sorry but I don’t think having my feet in the view of forward motion is all that safe. I think it is a great concept now just fix the tumble and skin it I would buy one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401594",
"author": "JJ",
"timestamp": "2011-06-04T06:31:37",
"content": "The purpose of this project was not to build the vehicle of the future – it was probably one of the coolest Mechatronic Final Year Projects at the uni. They were improving the slosh control, and having a lot of fun at the same time. I believe it was more stable than the video suggests because they filmed the fun/interesting parts. It was a very complicated project for undergraduates to work on and they achieved an excellent result.It really isn’t as simple as a lot of people on this seem to think and it was to test control systems not to develop a form of transport. Give them a break.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,177.657021
|
||
https://hackaday.com/2011/06/01/sinister-tone-generator-brings-the-bass/
|
Sinister Tone Generator Brings The Bass
|
Mike Nathan
|
[
"Musical Hacks"
] |
[
"analog synth",
"sound generator",
"tone generator"
] |
[RichDecibels] wrote in to share a new device he built called the “
Sinster Tone Generator
”. It’s basically a bass drone synthesizer that uses two pairs of heterodyning oscillators to generate the output. If you swing by his site, he has a long audio demo of the device in action with a bit of reverb and filtering applied to enhance the sound. After listening, we agree that it sounds pretty sinister!
The device is relatively small and handsomely packaged in a plastic project box he had custom cut by Ponoko. [Rich] says that this particular unit is a one-off that he has produced for a charity auction, and that bidding is open through Sunday if you really want to get your hands on it. If you happen to have the time to build one yourself, he has uploaded schematics and layout files to his site (as usual), so feel free to stop by and grab a copy.
| 8
| 8
|
[
{
"comment_id": "400577",
"author": "Hirudinea",
"timestamp": "2011-06-01T18:11:19",
"content": "Sounds like my farting keychain when the batteries run down.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400679",
"author": "Dino",
"timestamp": "2011-06-01T22:14:45",
"content": "I freakkin LOVE this! Nice one!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400691",
"author": "zokier",
"timestamp": "2011-06-01T23:20:12",
"content": "I’m actually more interested on that neat looking casing. I wonder how difficult making similar construction with hand tools (no laser cutter here :/)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400794",
"author": "leafy",
"timestamp": "2011-06-02T06:58:28",
"content": "his site exceeded its bandwidth already :( I’m too late to the party",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400795",
"author": "leafy",
"timestamp": "2011-06-02T07:00:18",
"content": "found a working audio version herehttp://matrixsynth.blogspot.com/2011/06/sinister-tone-generator-for-charity.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400803",
"author": "Rich Decibels",
"timestamp": "2011-06-02T07:57:35",
"content": "Ah peas! Sorry about the bandwidth peeps that’ll teach me for living in the third world. My ISP tells me they’ll have it reactivated in “12-72 hours”.Photos and schematics are here:http://www.flickr.com/photos/rdbartlettSample is here:http://soundcloud.com/rich-decibels/rich-decibels-drone-explosion",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400900",
"author": "Matt Lovett",
"timestamp": "2011-06-02T13:13:23",
"content": "Google Cache of his site:http://webcache.googleusercontent.com/search?sclient=psy&hl=en&safe=off&nord=1&site=webhp&source=hp&q=cache%3Ahttp%3A%2F%2Frichdecibels.com%2Fblog%2F%3Fp%3D166&aq=0&aqi=&aql=&oq=&pbx=1&bav=on.2,or.r_gc.r_pw.&fp=fe409b5e99404bc&biw=1680&bih=905&ion=1&ion=1",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400920",
"author": "Harvie.CZ",
"timestamp": "2011-06-02T13:29:23",
"content": "Wow. I like the heterodyning trick with shared capacitor. I’ll try it on my Lunetta(-like) synth soon.BTW casing is also very nice.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,177.923761
|
||
https://hackaday.com/2011/06/01/gpu-password-cracking-made-easy/
|
GPU Password Cracking Made Easy
|
Mike Szczys
|
[
"Security Hacks"
] |
[
"cain",
"crack",
"gpu",
"hash",
"ighashgpu",
"password",
"windows"
] |
The power that a Graphics Processing Unit presents can be harnessed to do some dirty work when trying to crack passwords. [Vijay] took a look at some of the options out there for cracking passwords and found that
utilizing the GPU produces the correct password in a fraction of the time
. On a Windows machine he pitted the
Cain password recovery tool
which uses the CPU for its calculations against
ighashgpu
which uses ATI or Nvidia graphics cards to do the deed. Hands down ighashgpu is the fastest; with Cain taking about one year to crack an eight character password while ighashgpu can do it in under nineteen hours.
We were very interested to see how easy it is to use this package.
We looked in on GPU cracking in September
but didn’t focus on the software packages that are out there. Now that you know how easily your password can be unearthed perhaps you will get some use out of
this article discussing the usability and security of longer passwords
which we ran across over on
Reddit
.
| 37
| 35
|
[
{
"comment_id": "400551",
"author": "Bob",
"timestamp": "2011-06-01T17:10:34",
"content": "That is what we call an order of magnitude difference in speed, which doesn’t make me think that the GPU is fast but that we are using the CPU inefficiently.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "541705",
"author": "not_so_new",
"timestamp": "2011-12-21T21:56:02",
"content": "The CPU isn’t used inefficiently, just the GPU has a few hundred “cores” while the CPU doesn’t. The GPU cores are pretty specialized and can’t do every instruction, but they can do simple things and can do them fast. GPUs use SIMD (single instruction, multiple data) and it’s what is needed for password cracking. You need the same computation over loads and loads of data. So it’s clear why GPUs are that much faster in password cracking (as they are in video/audio encoding and so forth)",
"parent_id": "400551",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "400552",
"author": "Tristan Lear",
"timestamp": "2011-06-01T17:10:40",
"content": "what about a tool for linux?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400556",
"author": "fartface",
"timestamp": "2011-06-01T17:19:57",
"content": "does this scale? What if I have a SLI card setup? will it use the extra processing of the second video card to make it even faster? what about Quad SLI that is coming around the corner?What I can see is getting well over super computing level power in the dirt dirt cheap price of under $4000 computer to utterly destroy a password hash like that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400558",
"author": "Alex Chamberlain",
"timestamp": "2011-06-01T17:26:06",
"content": "This shows that passwords are no longer strong enough and that we will soon be using some form of 2 factor authentication regularly.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400559",
"author": "cptfalcon",
"timestamp": "2011-06-01T17:27:01",
"content": "Bob: you should expect to see at least an order of magnitude performance difference between CPU and GPU for memory bound tasks, because the relative effective memory bandwidth is roughly 10x faster on the GPU. If you are computation bound, its not even a fair comparison, the GPU should win hands down – it simply has more computational elements. The GPU has more silicon area dedicated to computation and less to things like speculative execution and branch prediction which wouldn’t help much for brute forcing passwords. Brute forcing passwords is mostly explicitly parallel and so results that show an order or two performance improvement are not surprising.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400560",
"author": "abobymouse",
"timestamp": "2011-06-01T17:27:26",
"content": "Who still uses 8 character passwords?8 chars is a minimum length that you only use if you’re forced to. And then you make it a random mix of uppercase, lowercase, numbers and symbols.@bob – The GPU is much faster than the CPU because of the different types of math each processor is designed for.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400567",
"author": "mogpharau",
"timestamp": "2011-06-01T17:48:23",
"content": "It should scale with SLI, Pyrit does.http://code.google.com/p/pyrit/It’s only a little bit more than 2x improvement with 4x GeForce 295 GTX cards, versus 2x 295 GTX cards. But it’s still more than 2x.(Pyrit brute-forces WPA and WPA2 pre-shared keys.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400579",
"author": "Vijay",
"timestamp": "2011-06-01T18:14:00",
"content": "@ Bob: The thing is a GPU uses all its it’s “cores”. In this example 800 cores. If you want CPUs to match, you need about 150 CPU cores at 3GHz.@ fartface: It should be possible.@ Alex Chamberlain: I would say Salted passwords are relatively stronger and will hold up longer.@ cptfalcon: I think there won’t be much of a difference when you increase the memory bandwidth. I have already tested overclocking the vieo memory of my 5770 but of no use. Only core overclocking shows a difference.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400581",
"author": "Tech B.",
"timestamp": "2011-06-01T18:23:54",
"content": "olm-hashcat does the same thing:http://vimeo.com/16204254",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400582",
"author": "fartface",
"timestamp": "2011-06-01T18:24:17",
"content": "@mogpharau 2X is enough for tought cases.. heck even a 1.5X would be enough for a very hard multi day crack.10 days versus 20 days is a significant change.Very cool stuff.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400586",
"author": "Matthias Welsh",
"timestamp": "2011-06-01T18:37:41",
"content": "While we’re on the subject of passwords/password cracking… anyone who uses Wachovia needs to bombard their support with requests to step into 2011. They’re still forcing a 14char max password… probably storing it in plain text somewhere. Also, @Alex Chamberlain, I’m feeling fairly safe using lastpass with a ubikey for 2 factor authentication and some crazy long passwords of total noise. It’s not real 2 factor auth but I feel safe enough. With proper salting I doubt this would be all that effective, even renting time on something like the EC2. Steve Gibson is claiming he’s going to change the whole password world on Thursday on his podcast Security Now (grc.com) and given all his work over the years I’m looking forward to hearing his take. If you’ve ever used one of his “perfect paper passwords” he’s claiming you’ll never need one of those again.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400589",
"author": "Reliq",
"timestamp": "2011-06-01T18:43:55",
"content": "Thats why I use a windows xp cd key with alternating caps and lowercase every few characters.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400590",
"author": "mogpharau",
"timestamp": "2011-06-01T18:48:20",
"content": "@fartface I agree that 2x is a huge increase in these cases. For a somewhat complex password, 6 months versus 1 year could mean a lot! :) What I found interesting is that Pyrit has a *more* than 2x speed increase with only a 2x hardware increase. I would be interested to see if ighashgpu does this as well.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400597",
"author": "puzzle",
"timestamp": "2011-06-01T18:58:43",
"content": "oclhashcat is another gpu cracking program worth looking at. it appears to support more algorithms and i’ve had great results using it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400612",
"author": "muzzy",
"timestamp": "2011-06-01T19:37:13",
"content": "Salting only protects against parallel cracking of multiple password hashes at the same time, it doesn’t really make single password cracking slower.Even 6 character passwords can be fairly secure if the hash algorithm is slow enough and the charset wide enough. Modern password hashing systems will allow you to adjust number of rounds to make the hash calculation slower. Works especially well on systems that don’t see high rate of logins such as home servers. You could even have 100ms cost for hash calculation and it’d take a year to exhaust the key space of 6 character password for lowercase alpha charset, or a whopping 65k years for full alphanumeric. Obviously 100ms hash calculation has other severe issues though, weakness against DoS attacks for example :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400614",
"author": "Pun",
"timestamp": "2011-06-01T19:42:43",
"content": "I’d love to use my GPUs to crack passwords, but they’re all busy mining Bitcoins… :P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400620",
"author": "gdest",
"timestamp": "2011-06-01T20:08:00",
"content": "3200M?? latest oclHashcat-lite makes 75000M!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400625",
"author": "abobymouse",
"timestamp": "2011-06-01T20:15:54",
"content": "@Matthias – Steve Gibson hasn’t done anything useful since Spinrite. For sure, PPP is well respected by security people, but Gibson is known for making dramatic statements about things which are very ordinary.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1652419",
"author": "Faye Kane",
"timestamp": "2014-07-21T01:18:43",
"content": "Gibson is also known for just making sh it up, like that the magnetic domains on am HDD fade with time. Other stuff, too. He’s a real, REAL good assembler programmer, but I lost a lot of respect for him when I read that.-faye kane ♀ girl brainsexiest astrophysicist you’ll ever see nakedtiny url dot com slash kanecave",
"parent_id": "400625",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "400631",
"author": "DanS",
"timestamp": "2011-06-01T20:38:36",
"content": "Seriously. I’m sick of seeing bitcoin forum spam. Enough.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400670",
"author": "Brammers",
"timestamp": "2011-06-01T22:06:09",
"content": "Has anyone considered using a CueCat? It’s a handheld barcode scanner spits out a load of scrambled junk when you scan a barcode, such as “C3nZC3nZC3nWCxjWE3D1C3nX.cGf2.ENr7C3v7D3T3ENj3C3zYDNnZ”. It’s quick to use as an input device, and you could use pretty much any barcoded item in your house as a password.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400714",
"author": "M4CGYV3R",
"timestamp": "2011-06-02T00:17:59",
"content": "That works pretty damned well.27 Mil passwords a second or so? Nice. How do I turn off the GPU overtemp shutdown?The only thing to keep in mind is salted passwords will be x characters longer than the passwords allowed by whatever system you are unhashing this from.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400716",
"author": "Truth",
"timestamp": "2011-06-02T00:27:52",
"content": "It would be nice if there was source code.With all the interest in MD5/SHA1-SHA256 hashing I’m surprised that no one has made ultra high powered processors dedicated to this task alone. Yea FPGA’s have been programmed to provide hashing functions but they are not as fast as a dedicated VLSIC could be.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400722",
"author": "Maave",
"timestamp": "2011-06-02T01:07:10",
"content": "I’m surprised that this comes so late to HackADay, I’ve seen high-speed hash cracking for years.The problem is that even with GPU acceleration you won’t often be able to get past 8 characters. Rainbow tables are more effective.ighashgpu is neat but it hasn’t been updated in over a year.oclHashCat really nice, it’s an OpenCL version of HashCat. It’s fast and EXTREMELY flexible- to writer made it in such a way that allows distributed cracking. There are multiple version of oclHashCat, each optimized and suited for different methods of cracking (dictionary, single hash, distributed, etc). I highly recommend this one for its flexibility.RainbowCrack is a monster but they don’t provide many tables. There’s a CUDA accelerated version but that doesn’t support as much as the normal version (CUDA isn’t really needed anyway, tables are fast as hell). RainbowCrack is sweet if you find the right tables.Cain and Able supports rainbow tables. It’s not as fast as Rainbow crack but it does work.Ophcrack is a nice easy rainbow table based cracker for Windows passwords. They have good tables available on torrents.Now I know I’m missing a good GPU cracker but I don’t remember what it is. It’s a competitor of oclHashCat. I’m pretty sure it’s not CUDA Multiforer, too old. If anyone knows please comment.Make note: CUDA is nVidia-only. OpenCL works on both ATI and nVidia but ATI has optimized their drivers to work much more efficiently with it.@TruthGPUs are actually perfect for this task. Multi-parallel processing is exactly what’s needed for cracking hashes.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400726",
"author": "FontFiend",
"timestamp": "2011-06-02T01:12:06",
"content": "I’m really impressed by the mad hacking skills of someone who was able to run two pieces of software and compare execution times. True hacker.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400738",
"author": "cptfalcon",
"timestamp": "2011-06-02T01:18:39",
"content": "@Vijay: You are absolutely correct that cracking passwords is not a memory bound task (but perhaps it would be if you were using a tables based approach). However many other GPGPU applications are constrained by memory performance, particularly with scientific computation. In addition, overclocking memory speed may not do anything if the memory controller is a bottleneck. I think this is why you dont see any difference when changing the cycle frequency for the memory. I’m pretty sure that modern GPUs actually put the memory controller on-die, so that it is reasonable that it is tied to the core clock rate rather than memory frequency. Lowering the memory clock rate should decrease performance.@Maave: what is the restriction for GPU’s with 8 character passwords? Simply computation time for brute forcing 256 times more possibilities?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400740",
"author": "cptfalcon",
"timestamp": "2011-06-02T01:24:15",
"content": "@Truth: making hardware is expensive! A chip tapeout is at least $250,000 for one run. This might result in 100 chips or so, depending on complexity etc. The higher the volume the lower the cost – most of that is setup costs. Economically outside of perhaps a few government organizations it doesn’t make sense – and with FPGAs pushing 600Mhz+ it is much more economical to stick to fpgas. Remember you can compensate for the lack of performance per one FPGA by putting multiple FPGAs on a single board.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400762",
"author": "Redmond",
"timestamp": "2011-06-02T03:37:39",
"content": "Barswf is way faster…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400772",
"author": "Vijay",
"timestamp": "2011-06-02T05:02:23",
"content": "@Redmond: As far as I have heard, Barswf is no faster than ighashgpu. In fact it’s slower.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400917",
"author": "epix",
"timestamp": "2011-06-02T13:23:23",
"content": "oclhashcat-lite is fastest",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401140",
"author": "Seuros",
"timestamp": "2011-06-02T22:20:08",
"content": "@MaaveWhitepixel!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401189",
"author": "tantris",
"timestamp": "2011-06-03T01:22:33",
"content": "going from an 8 to 9 character password changed the decoding time from 18 hours to 48 days. same thing with the wpa-cracks so far: just go with something longer and you’re safe.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401234",
"author": "mrb",
"timestamp": "2011-06-03T05:24:52",
"content": "Maave: perhaps you were thinking about my open source GPU-accelerated password bruteforcer whitepixel ;)http://whitepixel.zorinaq.com",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401271",
"author": "Paulius",
"timestamp": "2011-06-03T07:52:08",
"content": "At my work place we have built custom with custom water cooling system for 2 x Radeon HD6990 GPUs for cracking SL3 hash. We are using it for unlocking Nokia phones :)http://forumas.modding.lt/viewtopic.php?f=13&t=5803",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401687",
"author": "gsmfan",
"timestamp": "2011-06-04T16:19:07",
"content": "use ighashgpu or ocl? what is best 6990?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "475819",
"author": "r",
"timestamp": "2011-10-08T23:38:01",
"content": "How do u get this software",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,178.112904
|
||
https://hackaday.com/2011/06/01/jeris-dress-lights-up-when-someone-invades-her-personal-space-step-back-nerds/
|
[Jeri’s] Dress Lights Up When Someone Invades Her Personal Space — Step Back Nerds!
|
Mike Szczys
|
[
"LED Hacks",
"Wearable Hacks"
] |
[
"analog",
"barbot",
"dress",
"instamatic",
"jeri ellsworth",
"schmitt trigger"
] |
[Jeri] threw down the geeky fashion gauntlet by
building this LED enhanced dress
. She chose to assemble the project for her trip to BarBot 2011, and we can’t think of a more appropriate setting for such a garment. It uses a motion sensor to set off a delayed pattern of blue lights hidden underneath the fabric.The best part of the hack is the instamatic camera. It looks like a fashion accessory, but it’s really hiding all of the circuitry for the lights.
Inside the camera a PIR sensor waits until it detects motion, sending a signal through an op-amp to the trigger circuitry. A 74LS14 Schmitt Trigger chip teams up with some resistor-capacitor timer circuits to build a delay chain for the LEDs. This way, after motion is detected the LEDs come on and off in a staggered pattern that doesn’t require a microcontroller and is very pleasing to the eye. See the Analog win for yourself after the break.
[youtube=http://www.youtube.com/watch?v=RLFLwZ-JGaU&w=470]
| 34
| 34
|
[
{
"comment_id": "400524",
"author": "jacubillo",
"timestamp": "2011-06-01T16:12:26",
"content": "Looking at that picture, I wanna make her dress light up A LOT!lol",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400529",
"author": "SelfSilent",
"timestamp": "2011-06-01T16:19:11",
"content": "I need a Jeri of my own, she’s lovely.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400532",
"author": "Colecago",
"timestamp": "2011-06-01T16:20:22",
"content": "I bet she definitely needs something like this when she’s out and about given all the comments on HaD",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400534",
"author": "Dino",
"timestamp": "2011-06-01T16:25:33",
"content": "You guys need girl friends! :)Love the instamatic Jeri. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400535",
"author": "jacubillo",
"timestamp": "2011-06-01T16:27:00",
"content": "I have a gf… but I still wanna make her dress light up. haha",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400536",
"author": "The Ideanator",
"timestamp": "2011-06-01T16:27:41",
"content": "@jacubillo@Troll_Dragon@SelfSilenthttp://xkcd.com/322/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400539",
"author": "xorpunk",
"timestamp": "2011-06-01T16:37:45",
"content": "not surprised where it’s showing given the crowd..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400544",
"author": "Will",
"timestamp": "2011-06-01T16:50:20",
"content": "Hate to nitpick but a PIR is a motion sensor, not a proximity sensor. HaD got the title wrong, Jeri even mentions it as motion activated in passing in the video. Motion is still cool but proximity would be really funny. Especially if it had sound too… “Please step away from the geek!”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400545",
"author": "johnas",
"timestamp": "2011-06-01T16:50:53",
"content": "that’s one sexy geek…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400546",
"author": "CP",
"timestamp": "2011-06-01T16:51:05",
"content": "Ha ha, we’re all unable to appreciate the hack because we’re 14-year-old horndogs!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400547",
"author": "vlad",
"timestamp": "2011-06-01T16:53:27",
"content": "Jeri is soooo hot.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400549",
"author": "Bob",
"timestamp": "2011-06-01T16:59:50",
"content": "She seems to be missing legs. And most of an arm :p",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400561",
"author": "Reggie",
"timestamp": "2011-06-01T17:36:40",
"content": "does ‘invading her personal space’ include looking at her breasts? If so the light just below on the right in the image is entrapment.‘I swear I was looking at the light, honest.’",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400564",
"author": "Alex",
"timestamp": "2011-06-01T17:40:05",
"content": "Anyone else thinking, “Danger, Danger. High voltage” :P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400569",
"author": "lostalaska",
"timestamp": "2011-06-01T17:53:39",
"content": "The dress is pretty nifty, and the description says most all the electronics are tucked inside the camera which is a nice way of hiding all the gear in plain site, but what the hell is she holding in her left hand that has 2 NES controllers and some kind of screen… awwwwwww it’s a NERD trap and I fell for it… what I meant to say was …. she’s all hawt and stuff… yeah….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400574",
"author": "robomonkey",
"timestamp": "2011-06-01T18:03:36",
"content": "Now combine that with some form of remote eye tracking and make the dress light up where the other person is looking. Giving easy reference to “my eyes are up here, guys.”Mind you all those brains in that awesome body? PRICELESS!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400580",
"author": "Tech B.",
"timestamp": "2011-06-01T18:17:10",
"content": "The title is very misleading.The PIR will trigger once she herself moves, or if it see someone/something else move.Proximity would be with a some kind of range finder, not PIR.Which does give me some ideas…..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400584",
"author": "Jac Goudsmit",
"timestamp": "2011-06-01T18:28:23",
"content": "To all of those who just want a peek under Jeri’s dress: your wish will be granted in this video but maybe not in the way you expect :-)Great video Jeri!===Jac",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400593",
"author": "0.zer0",
"timestamp": "2011-06-01T18:51:27",
"content": "Interesting project…like pretty ladies in dresses…still, that NES thing she’s holding is what’s got me intrigued…lol",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400599",
"author": "lizardb0y",
"timestamp": "2011-06-01T19:03:31",
"content": "@lostalaska The device she’s holding is her purse.http://www.jeriellsworth.com/?p=18",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400621",
"author": "goober",
"timestamp": "2011-06-01T20:11:22",
"content": "Repelling nerds with LEDs? Isn’t that like trying to repel lions with steaks?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400649",
"author": "twopartepoxy",
"timestamp": "2011-06-01T21:28:54",
"content": "meh",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400651",
"author": "Hirudinea",
"timestamp": "2011-06-01T21:37:36",
"content": "@lizardboy – I just checked out the purse, cool! And you gotta love a chick with a soldering iron in her purse.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400683",
"author": "SpiralBrain",
"timestamp": "2011-06-01T22:28:11",
"content": "Someday we might see female robots like Jeri…Sigh!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400684",
"author": "ENKI-][",
"timestamp": "2011-06-01T22:34:45",
"content": "If I recall, the head-mounted EEG-controlled lightbulb project used a similar electronics-in-a-pendant deal. Could you fit the electronics for both the dress and the EEG bulb in the instamatic enclosure? Would it be reasonably safe? (Don’t know the voltages involved with the PIR and the under-dress lights).I’m a big fan of wearable electronics. I hope Jeri keeps up her experimentation in this field.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400703",
"author": "Whatnow?",
"timestamp": "2011-06-01T23:44:31",
"content": "Why does it look like she peed her pants?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400757",
"author": "Pilotgeek",
"timestamp": "2011-06-02T02:45:25",
"content": "/Obligatory “I’d like to light up her dress” type comment.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400802",
"author": "bob",
"timestamp": "2011-06-02T07:55:40",
"content": "repelling nerds with leds like repelling lions with steaks MAJOR LOL.more of everything jeri,more projects and more of you please,you are a eyecandy jewel in amonst a sea of jewelessbelly buttons (whoops, just given away my best nerd chat up line, damn it) LOL",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400878",
"author": "TSA",
"timestamp": "2011-06-02T12:26:26",
"content": "Just don’t go to an airport with that dress on.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400936",
"author": "Roman Dulgarov",
"timestamp": "2011-06-02T14:19:03",
"content": "Geez, I can see the nerd dr00l oozing out of my monitor…. calm down guys lol I’m also getting flashes of Napoleon Dynamite and his uber “nun-chuck” skillz for some reazon… with Pedro blinking rapidly in backround",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400958",
"author": "nes",
"timestamp": "2011-06-02T14:50:05",
"content": "She says she is using 74LS logic, but I’m not sure that would light up LEDs the way it does in the video. Max source current in the case of a grounded LED is only ~0.4mA and a high output is pretty darn close to VF for a blue LED. I would expect half the LEDs to be very feint.Perhaps it was some other logic family, or the buffers are non inverting?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401199",
"author": "tantris",
"timestamp": "2011-06-03T02:29:50",
"content": "@nes: according to her drawing towards the end of the video, the buffers are inverting.i get your point. “guaranteed operating range” of 74ls04 is 0.4ma, but e.g. 74act04 could drive a led.and oblig comment on jeri’s looks: the pose in the top picture reminds me of karen gillan in doctor who.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401286",
"author": "Donov4n",
"timestamp": "2011-06-03T09:44:59",
"content": "This is so lame, it just kills me…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401881",
"author": "fuzzy",
"timestamp": "2011-06-05T06:39:00",
"content": "Jeri rocks as always.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,178.04133
|
||
https://hackaday.com/2011/06/01/buying-selling-and-bartering-hacking-hardware/
|
Buying, Selling, And Bartering Hacking Hardware
|
Mike Szczys
|
[
"Misc Hacks"
] |
[
"classifieds",
"grenadier",
"parts",
"surplus",
"the junkbox"
] |
Regular reader [Grenadier] wrote in to let us know about his newly published
hacking hardware trading post called The Junkbox
. Apparently when he’s not
blowing up capacitors
or
building his own
high voltage ones, he makes time to code up a website where you can buy, sell, and barter leftover components.
We have something like this right here at Hackaday. The dollar sign icon along the right column, just underneath the featured posts banner will take you to
our classifieds section
which at the time of writing had a whopping nine items posts. But these things to ebb and flow. Check in on the
newly posted link
from time to time to see that number grow.
Whether it’s over at The Junkbox or in our classifieds section, we think the biggest problem is finding what you need when you need it. This is nothing new. If you missed it before, we’ve embedded an older episode of the EEVblog after the break where [Dave Jones] tours Apex Surplus. It’s as if a hacker who has hoarding tendencies bought a store forty years ago and just kept piling more and more merchandise to the sky.
[youtube=http://www.youtube.com/watch?v=XesfMfS5usY&w=470]
| 5
| 5
|
[
{
"comment_id": "400508",
"author": "Tron9000",
"timestamp": "2011-06-01T15:16:12",
"content": "Any chance of a UK & europe section?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400514",
"author": "Colecoman1982",
"timestamp": "2011-06-01T15:45:26",
"content": "@Tron9000: It sounds like real estate is a little outside the scope of their concept.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400533",
"author": "Squintz",
"timestamp": "2011-06-01T16:24:18",
"content": "I like the idea but the site is very hard on my eyes.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400583",
"author": "RyanCSmith",
"timestamp": "2011-06-01T18:24:53",
"content": "Apex Surplus is awesome, you could easily spend 2 days there looking around. It’s my go to for any kind of wire or heavy duty cable.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401036",
"author": "mixadj",
"timestamp": "2011-06-02T19:03:03",
"content": "It looks the costco in the movie idiocracy…….",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,177.877835
|
||
https://hackaday.com/2011/06/01/prototyping-the-new-office-clock/
|
Prototyping The New Office Clock
|
Mike Szczys
|
[
"clock hacks"
] |
[
"7 segment",
"arduino",
"ds3234",
"xbee"
] |
[Damage] was tapped to build a new clock to hang on the wall at the office. He got a hold of some 6.5 inch seven segment displays for the hours and minutes, as well as some 4.5 inch modules for the date and month. Rather than jump right in with the large hardware (especially because he’s waiting for the PCB order to arrive)
he built this prototype
with more commonly sized displays.
His build is Arduino powered. In the video after the break he mentions the temperature compensated crystal oscillator that keeps the time. We’d wager that’s the DS3234 based RTC module
that Sparkfun sells
. This is the same chip family as the
Chronodot
and it was our choice for the
Ping Pong Clock
.
The finished clock will hang high on wall, out of reach when you need to set the time. This shouldn’t need to be done much – if ever – since that RTC includes a backup battery. But [Damage] took the time to develop a remote programming device anyway. Using another Arduino, an LCD display, and an Xbee pair he whipped up a remote that can be used to navigate and change the main unit’s settings.
[youtube=http://www.youtube.com/watch?v=Qql_7a3p8tk&w=470]
[Thanks Paul]
| 10
| 10
|
[
{
"comment_id": "400476",
"author": "fartface",
"timestamp": "2011-06-01T13:14:20",
"content": "Again with the lame Xbee stuff… Put a wifi shield on it and make it sync with NTP and call it done…http://www.arduino.cc/playground/Code/TimeX-bee sucks for it’s price. if they lower the price to reasonable levels then I’d look at it, but this design requires a second setup on a PC and special software to set the time. NTP baby all the way.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400496",
"author": "lwatcdr",
"timestamp": "2011-06-01T14:17:22",
"content": "You could use the XBee to connect to a server running NTP. Depending on the location they may not allow Wifi in the office. How if they had spare Ethernet port and where using POE they could use that for both power and NTP.I love the idea of network addressable clock. You could add an LCD to it as a title and have it also be say a Count down clock. I have to say the WiFiShield I do find interesting.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400639",
"author": "oldfart",
"timestamp": "2011-06-01T20:48:54",
"content": "WiFi sucks for power consumption, ZBee runs at a fraction of the demand. In this app, I’d probably use an IR remote for less $ and no need for a special TX unitMore importantly – use a coin type supercap to hold the D323x chip up. I keeps the RTC on the money for well over a week, and you never have to rplace the battery.Moving the clock, blackouts and other hiccups are a thing of the past.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400647",
"author": "Damage",
"timestamp": "2011-06-01T21:15:55",
"content": "Hello All, Thanks for the writeup and comments. Yes the article is correct in most of its points, the RTC3234 is the RTC being used. The larger version will have its own logic board and won’t use breakout boards. This is going to be hung in a warehouse that does not have internet access. I am fairly new to Arduino (been tinkering for about 6 months) so trying to manage a TCP/IP stack is at this point would be a little above my skill level. I intend to build other Easter eggs into this unit, such as perhaps a mode to count down until the end of the shift. My coding skills are barely passable at best. I am doing this because I thought it would be a fun project within my reach that would be a good learning experience and produce a nice project at the end. The IR remote is an intriguing idea I hadn’t considered. for anyone interested in more on this, I will post updates as I progress on my hack-hut page. Thanks, Damage aka Tom",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400672",
"author": "Drone",
"timestamp": "2011-06-01T22:07:11",
"content": "This needs about four more Arduinos.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400754",
"author": "Snide",
"timestamp": "2011-06-02T02:22:20",
"content": "Screw this standardized time stuff. Strap a photocell on the thing and have it set itself daily to local noon. Drill a hole through the ceiling so it can see out.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400769",
"author": "oldfart",
"timestamp": "2011-06-02T04:39:19",
"content": "Supercap + DS3231 that I use is great.Generally less than a second per month in drift.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400770",
"author": "oldfart",
"timestamp": "2011-06-02T04:42:59",
"content": "BTW – if anyone is using the sundial method (photocell behind a pinhole) – try a small length of tube over the sensor with narrow slots cut in opposite sides to accommodate azimuth change over the year. The circular end of the tube provides the sine/cosine correction for light falling on the (phototransistor) – but sorry – can’t help with DST adjustment ;o)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400835",
"author": "Alex",
"timestamp": "2011-06-02T10:44:18",
"content": "Somewhat overkill on the arduino front… Nice project otherwise…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401192",
"author": "error404",
"timestamp": "2011-06-03T01:41:12",
"content": "@Snide: Awesome.@Damage: Where’d you get those digits, they look really nice?And assuming you’re in North America somewhere, why not ditch the $40 worth of ZigBee stuff and one of the $40 Arduinos and replace them with a WWVB receiver? SparkFun sells one for $11 (http://www.sparkfun.com/products/10060) to set the time? You’d have to write the protocol decoder, but it’s not particularly difficult.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,177.969579
|
||
https://hackaday.com/2011/06/01/devil-horns-adorn-the-hood-of-my-truck/
|
Devil Horns Adorn The Hood Of My Truck
|
Mike Szczys
|
[
"Misc Hacks"
] |
[
"dental alginate",
"hood ornament",
"resin",
"zombie"
] |
When you’re hunting zombies you’ve got to give them something to fear. [Shannon Larratt] is getting ready for that eventuality by
adding devil horns as his hood ornament
. It looks awesome from afar, but when you see the close-up images you realize how lifelike this is. That’s because it’s not a sculpture. [Shannon] cast the ornament in a mold made from his own hand.
The process started with some dental alginate which he slobbered all over his hand as he held the devil horns pose. After the mold had hardened he cast the ornament using fast-curing black plastic resin.
With the ornament now in hand he needed a way to secure it to the hood of his vehicle. He picked up a threaded U-bolt. A hole and a slot were carved in the base of the ornament to receive the U-bold and a straight bolt for a trio of anchor points. More of the black resin fills the holes, securing the bolts and making it a snap to mount the ornament by drilling through the hood.
We also find it awesome that during this process [Shannon] took the time to cast his daughter’s fist for use as a door knob at home.
| 31
| 31
|
[
{
"comment_id": "400465",
"author": "CB4",
"timestamp": "2011-06-01T12:41:00",
"content": "and this is on the rear?http://www.bumpernuts.com/nice hand btw :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400469",
"author": "fartface",
"timestamp": "2011-06-01T12:53:11",
"content": "Add some truck nuts and you will have completed the redneck look.Get some huge truck nuts, make them out of steel so they drag and spark.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400475",
"author": "s1500",
"timestamp": "2011-06-01T13:12:55",
"content": "Is Hackaday now “You Drive What?”. I’ll go to YDW and look for a low-cost ECU hack on there.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400479",
"author": "Hackerspacer",
"timestamp": "2011-06-01T13:21:22",
"content": "As … interesting as this is – is this really a hack? It seems to be more of an aesthetic addition than a functional hack. Man makes alginate mold and pours in casting resin then mounts on truck hood. Not saying it is pointless or useless or anything like that but what does it “do”?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400483",
"author": "TheInternet",
"timestamp": "2011-06-01T13:37:04",
"content": "This is a site about hacking, if you can’t find a way to apply the process and adapt it to your own purposes, than maybe you shouldn’t be on this site?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400487",
"author": "Haku",
"timestamp": "2011-06-01T13:47:45",
"content": "Looks more like the head of a snail.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400490",
"author": "Keith",
"timestamp": "2011-06-01T13:54:33",
"content": "Worthless! Now if it where a set of hidden high-frequency antennas ….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400491",
"author": "valtrig",
"timestamp": "2011-06-01T13:58:31",
"content": "Nice hack. I hope the base is not spring loaded, because the pointy fingers can serve dual purpose you know. Not only do they improve your aiming when hunting for pedestrians, they also ensure that whoever you hit will certainly have their guts splattered all over the hood, if the winch hook doesn’t manage to do its job properly beforehand.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400493",
"author": "lwatcdr",
"timestamp": "2011-06-01T14:04:05",
"content": "chirp, chirp chirp crickets…..Yea… ahh. I would have to give this a 0.5 on the HAD scale. Of course we should all be thankful that he didn’t make a mold and cast another part of his body and put it on the hood.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400495",
"author": "Shannon Larratt",
"timestamp": "2011-06-01T14:10:19",
"content": "This is as “hack” as any case mod project for example (to say nothing of the more serious hacks to the vehicle mechanically). I realize that it might not fit the stereotype that people expect of the site but many of the same techniques are used. Don’t make yourself seem classist or culturally prejudiced by writing it off because it seems trashy.This is my truck BTW. If you prefer more stereotypical posts, well, I suppose skip this one or feel free to look at my blog as well to see the work I’ve done with electronics, microcontrollers, casemods, and other more obvious “hacks”. Either way I’m a big fan of this blog and happy to see my work here and not too concerned about people who don’t get it or want to distance themselves from it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400501",
"author": "Avaviel",
"timestamp": "2011-06-01T14:42:25",
"content": "This is about casting something, anything, for you to use wherever you want.Do you want a custom case for your arduino? You can make it.Do you want to make your own computer case? You can.Do you want to make a 3d version of one of those hack-a-day sculls? Follow what this guy did and you’re able.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400504",
"author": "Drake",
"timestamp": "2011-06-01T14:50:35",
"content": "Nice jeep …Id carve out a small cavity in the bottom of the hand and embed a neodymium magnet in it though. Now its movable … just a thought",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400505",
"author": "Maloushe",
"timestamp": "2011-06-01T15:00:09",
"content": "Don’t do it in Europe..the cops will get ya….EC DIRECTIVE 74/4836. PARTICULAR SPECIFICATIONS 6.1. Ornaments 6.1.1. Added ornaments which project more than 10 mm from their support shall retract, become detached or bend over under a force of 10 daN exerted at their most salient point in any direction in a plane approximately parallel to the surface on which they are mounted. These provisions shall not apply to ornaments on radiator grilles, to which only the general requirements of item 5 shall apply.http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=CELEX:31974L0483:EN:NOT",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400507",
"author": "Drake",
"timestamp": "2011-06-01T15:13:24",
"content": "@Maloushe BAsicly it means if a person hits your orniment then it needs to move rather then impale them. once again. magnets would solve it. If you needed it to not be completely removed use a bit of steel cable to loosely attach it to the hood",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400509",
"author": "Maloushe",
"timestamp": "2011-06-01T15:22:45",
"content": "@Drake I didn’t and don’t disagree with you. Just not the way he did it….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400513",
"author": "Zizzle",
"timestamp": "2011-06-01T15:41:30",
"content": "Looks like a nice fuel efficient, socially and environmentally responsible vehicle… oh wait this is America we are talking about…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400554",
"author": "tenfingers",
"timestamp": "2011-06-01T17:15:34",
"content": "One man’s devil horns, another man’s texas longhorns. You’d be popular at the University of Texas during football season.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400566",
"author": "Jim",
"timestamp": "2011-06-01T17:48:10",
"content": "@Zizzle: No, actually, it’s Canada.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400570",
"author": "Hirudinea",
"timestamp": "2011-06-01T17:56:04",
"content": "Nice hand job! (Ah, come on, you we’re all thinking it!)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400571",
"author": "vonskippy",
"timestamp": "2011-06-01T17:56:21",
"content": "That’s sad. Maybe they have a support group for men with small penises in his area.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400573",
"author": "jml",
"timestamp": "2011-06-01T17:58:29",
"content": "Zizzle–Shannon’s in Canada. Nice jumping to conclusions, though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400595",
"author": "Shannon Larratt",
"timestamp": "2011-06-01T18:54:10",
"content": "@vonskippy, the funny thing is you getting all butthurt and taking it seriously, seemingly unaware that this is something done with humor, and even akin to some kind of nerdy cosplay fun. I’m alright with my penis, thanks for having it be the topic of your thoughts. I must ask though if they have a support group for men with small senses of humor in your area. Haha.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400600",
"author": "0.zer0",
"timestamp": "2011-06-01T19:09:36",
"content": "It’s an interesting mod to be sure. I especially like the “Toronto Dpt of Zombie Disposal” on the side. The horns are a nice touch.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400623",
"author": "JohnM",
"timestamp": "2011-06-01T20:14:13",
"content": "The dude should at least pay his respects to the late Ronnie James Dio (one of the true heavy metal gods).If it wasn’t for him, the “devil horn” thing never would’ve caught on.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400629",
"author": "lwatcdr",
"timestamp": "2011-06-01T20:37:39",
"content": "@Zizzle Because nobody in Europe drives a LandRover, RangeRover, BMWX3, BMWX5, Mercedes G class or S class, or Volvo SUV… they all drive smartcars that run off of fairy farts.Oh and Toronto is in Canada. That is the problem with Europeans they think Europe is the center of the world and don’t even know the difference between the US and Canada.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400635",
"author": "Pilotgeek",
"timestamp": "2011-06-01T20:44:04",
"content": "Next up on “Arts & Crafts-A-Day”…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400686",
"author": "jpayne",
"timestamp": "2011-06-01T22:47:43",
"content": "hmmmm… Thanks looks like a Hook’em to me",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400709",
"author": "tehgringe",
"timestamp": "2011-06-01T23:55:27",
"content": "@lwatcdr Lol @ your first comment, fairy farts. It is true though, we do drive some fairly hefty stuff in the UK, but even they provide better fuel economy, but its economies of scale, we pay rotten prices for cars.Although your second point is way off. First of all I don’t think their are many people in Europe with a ‘European’ identity. They locate themselves to their respective countries, generally distrust/hate anyone else in the EU, and blame them for their respective countries debts/diseased crops/pregnant teens etc.As for the post, I declare it a hack. Case modding up above makes a good comparison, this is about re-purposing/altering something to suit your requirements, beyond the manufacturers original intention/specification.Also kudos to the EU law geek who provided the the reference to the regs on why Jaguars now have what looks like a moon face on the bonnet.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400756",
"author": "damntech",
"timestamp": "2011-06-02T02:38:55",
"content": "@JohnM Yeah, Deo did start the bull horn thing kinda… He got it from his mom who was warding off evil spirits with holy water and the sign of the bull. The bull horn sign is old and has many interpretations. But much like you when I see it I remember Dio too! :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400863",
"author": "wardy",
"timestamp": "2011-06-02T11:57:37",
"content": "I’m just grateful it’s his _hand_ he decided to make model of.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "404876",
"author": "jon_glassees",
"timestamp": "2011-06-12T19:08:18",
"content": "hackaday bringing people together since …whenever…i’ve seen this truck in my area a few times , like the finger on the license plate a nice touch of creepy…(by the by i was the one who talked to you at the gas station on friday)",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,178.179835
|
||
https://hackaday.com/2011/06/01/radio-packets-from-spaaaace/
|
Radio Packets…from Spaaaace!
|
Mike Nathan
|
[
"Radio Hacks"
] |
[
"APRS",
"ham",
"radio",
"space station"
] |
[Bill Meara] was watching the International Space Station and the Shuttle Discovery pass overhead a few weeks ago, which rekindled an interest he gave up long ago –
sending and receiving radio packets from space
.
Years ago, he used to send APRS packets into space with a small rig powered by a 286 computer and HandiTalkie. These packets would drift off into space most of the time, but occasionally they would bounce back to Earth whenever the space station or PC Sat would fly by. The packets were often captured by other ham operators across the globe, who happened to be tuned to 145.825 MHz.
His interest renewed, he dug out his old HandieTalkie and Kantronics Terminal Node, aiming them towards the sky via an antenna situated in his back yard. When he returned 10 hours later, he found that he had collected all sorts of “space packets” from across the globe.
While not exactly a hack, it is definitely a neat exercise in ham radio operation. We can imagine slinging data packets off the space station would be an exciting experience for any budding operator (and OMs as well!)
| 20
| 20
|
[
{
"comment_id": "400457",
"author": "Alex Parting",
"timestamp": "2011-06-01T12:07:52",
"content": "I don’t get it",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400460",
"author": "fartface",
"timestamp": "2011-06-01T12:20:16",
"content": "Yeah, other hams and I have been doing this for years…. The ISS has had a packet station up there for almost the entire time it has been in orbit. MIR did as well.This is not new to ham radio operators. In fact during field day there has always been a special additional points for getting ISS both voice and packet.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400471",
"author": "xorpunk",
"timestamp": "2011-06-01T13:04:27",
"content": "it’s called packet radio and uses ax.25, a lot of people have used it not just HAMs.I wonder how much of the data is encrypted?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400473",
"author": "blue carbuncle",
"timestamp": "2011-06-01T13:11:52",
"content": "Oh good times! Always fun to see what is bouncing around out there. Perhaps the “Numbers Lady” will host a Letterman style Night Talk Show this New Year’s Eve hehe.Even “dead air” is fun to mess with: the blips and crackles and freq swells sound really neat with some reverb and delay on them :)Makes me want to break out the radio gear at the parents house again.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400474",
"author": "Doc Oct",
"timestamp": "2011-06-01T13:12:29",
"content": "Encryption is expressly forbidden on ham frequencies, so none of it. If you’re talking about any downlinks outside of the ham band, I don’t know.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400486",
"author": "xorpunk",
"timestamp": "2011-06-01T13:46:33",
"content": "@Doc Oct: yeah..i forgot we were talking about HAMs for a second..the cub scouts of the electronic frontier..just kidding",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400497",
"author": "chango",
"timestamp": "2011-06-01T14:25:00",
"content": "Nothing new indeed. Almost 2 decades ago in high school I used a handheld and a homebrew packet modem (Baylink compatible) to catch the OSCAR-16 beacons. Unfortunately my radio and antenna weren’t beefy enough to make a connection.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400510",
"author": "DvD",
"timestamp": "2011-06-01T15:27:59",
"content": "Not the first time I have heard this either but it does make me want to get a radio and try this out. I looked up handitalkie and damn there are a few. Coincidentally a few weeks ago I was looking in to some old Radio Shack hand scanners that could be modded to scan a larger range of frequencies.My question to HAD- if I were going to get a HandiTalkie as my entry point in to the HAM world- which one? Or if not that- what should I be looking for? Is everything still in the 144.000 to 146.000 range? help….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400515",
"author": "TiMan",
"timestamp": "2011-06-01T15:49:03",
"content": "I just took my license exam and got a General license in one day. If you know electronics the test is not hard, and there is plenty of review material out there.You can get a very capable handie-talkie for about $120 (made in china of course).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400519",
"author": "Barrett Routon",
"timestamp": "2011-06-01T15:55:28",
"content": "Nice, I’ve been looking for something cool to do with APRS and my HT.@DvD: Check out the Wouxum KG-UVD1P. It’s a 5 watt dual bander (2m and 70cm) and its the HT we get all of our newly licensed hams at our college ARC.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400521",
"author": "Truth",
"timestamp": "2011-06-01T15:57:35",
"content": "Packet modems had(have?) a cool feature, if you messed up the settings and it no longer worked – sending “KISS” over RS-232 and it was reset back to factory defaults.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400526",
"author": "Alex",
"timestamp": "2011-06-01T16:12:49",
"content": "@xorpunk: Quit trolling. Try more like eagle scout. They don’t do it for a living, but I’m sure you’d like to have one around if you got stranded out in the wilderness.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400540",
"author": "N5DUX",
"timestamp": "2011-06-01T16:38:02",
"content": "Hey! I have that QSL card. From a voice contact I made. It’s archived onhttp://www.issfanclub.com",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400603",
"author": "Ian",
"timestamp": "2011-06-01T19:27:31",
"content": "Being a fairly young guy, I have never seen HAM radio equipment. I find this type of stuff fascinating though. How can I get into it? How can I get started?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400626",
"author": "asheets",
"timestamp": "2011-06-01T20:26:58",
"content": "@Ian — A US Technician Level licence, an old 286 laptop, a couple of transistors, and an even older RS HTS-100 10m transceiver is how I got started. Right now, I have a 10 meter propagation beacon, an APRS I-gate, a HFFAX station, and a NOAA POES receiver operational (the last two don’t even need a license).There’s lots of fun stuff to play with in HAM, and most of the time you don’t even need a whole lot of money to play with stuff. You can build a decent, world-wide transmitter for under $20 and purchase a Chinese-made multi-band receiver for $40 on eBay.kd0gjz",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400627",
"author": "Shadyman",
"timestamp": "2011-06-01T20:27:20",
"content": "@Ian: Look up your local Amateur Radio club and find out when their meetings are. They’ll be more than happy to give you guidance.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400767",
"author": "Daniel Mackey",
"timestamp": "2011-06-02T04:13:22",
"content": "I have a QSL Card from MIR confirming a digital contact. Got it 2 months before they abandoned MIR and dropped it in the ocean… NOW if I could just get one from the ISS also..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400807",
"author": "Max",
"timestamp": "2011-06-02T08:33:35",
"content": "Not to knock the craft, really – hey, I still remember checking what movies were playing using lynx, a home-made 1200 baud modem and a small Yaesu through a net gateway over a decade ago – but this sort of thing changed a lot in the recent past. It used to be something that only HAM enthusiasts could do, and it became something that only those with an interest in the actual radio technology care to do; not really surprising once people could stop thinking in landlines as sole means of communication and started carrying a tiny multi-band radio in their shirt pockets (otherwise known as a “cell phone”). It’s kinda like going to the North Pole – once regular charter lines by air are in place, only those who are in it for the sport of it bother going there by a dogsled – it’s just zero exotic appeal and not all that fun anymore.But hey, if that’s what floats your boat – by all means, I’m not trying to talk anyone out of doing it… go right ahead.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401071",
"author": "Oren Beck",
"timestamp": "2011-06-02T20:01:35",
"content": "One overlooked source for VHF and UHF gear of decent power outputs is retired Police/Taxi/Fire radios that are NOT narrowband capable. Details out of scope for HAD, but reassigning an old Mocom or Syntor etc to Beacon Duty is a worthy project for Hackerspace Ham clubs. As many radios of that general type can be run 24/7 Key Down with only slight derating. \\\\The related modes are Meteor Scatter and Aircraft reflections. Near space and slightly farther space counts as from space after all.Also, Beacons need not be a boring callsign loop alone. The details of what’s possible to stack into a properly modulated carrier are really astounding these days. Like our old hack of Dial Pulsing the PL tones :}",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "424192",
"author": "coolmike8789",
"timestamp": "2011-07-28T03:25:26",
"content": "What’s the space core’s favorite key? Spaaaaace!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,178.237738
|
||
https://hackaday.com/2011/05/31/a-keygen-for-the-real-world/
|
A Keygen For The Real World
|
Mike Nathan
|
[
"cnc hacks",
"Security Hacks"
] |
[
"3d printing",
"cnc",
"keys",
"reprap"
] |
[Nirav] found that he rarely printed anything useful with his RepRap, so to shake things up, he decided he needed to work on a project that didn’t involve printing yet more RepRap parts.
The goal of his project was to
create working replicas of house keys
by simply using the code imprinted at the factory. He purchased a handful of used lock sets from eBay, then carefully measured the keys with a ruler and calipers to get the blank dimensions just right. After that was done, he looked around online and was eventually able to create an OpenSCAD model using a chart of pin depth specifications he located. By changing the last line in the model’s code he can print any coded key. For keys lacking a code, he can manually measure the height of each bit and print replicas that way as well. Once printed, he says that they keys are strong enough to turn most locks he has come across, including deadbolts.
This is undoubtedly a neat project in its own right, though we would be interested to see if someone could get it paired with a program like
SNEAKEY
to generate bit measurements by sight alone.
| 39
| 36
|
[
{
"comment_id": "400290",
"author": "caleb",
"timestamp": "2011-05-31T23:04:36",
"content": "makes me feel safe at night",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400292",
"author": "TheCreator",
"timestamp": "2011-05-31T23:10:57",
"content": "this would save alot of time if i had a reprap. I don’t know how many jobs i go on that have do not duplicate keys that i end up cutting myself from a blank and a dremel.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400293",
"author": "dattaway",
"timestamp": "2011-05-31T23:15:09",
"content": "Next, an Android app that takes a cell phone picture of a key…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400294",
"author": "Maave",
"timestamp": "2011-05-31T23:17:00",
"content": "Cool, but I’d much rather mill it into a blank metal key than from a chunk of plastic.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400296",
"author": "Taylor Alexander",
"timestamp": "2011-05-31T23:22:05",
"content": "Wow, I’m surprised the RepRap has enough precision. I’ve only ever seen them in pictures but it never looks like they’re all that good.Also surprised the keys are strong enough.Very awesome.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400297",
"author": "Urza9814",
"timestamp": "2011-05-31T23:23:40",
"content": "Could a locksmith duplicate the plastic key? And even if they can — would they? Could be an easy way to get around those ‘do not duplicate’ keys…though I guess @TheCreator’s method of cutting a new one with a dremel would work just as well for that…",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1155037",
"author": "Rich Grise",
"timestamp": "2014-01-04T03:51:57",
"content": "I went to one of those “keys made” places, and the gal asked, “Howcome it says “do not dupoicate?” but she pronounced “duplicate” like the noun. (doop-li-cut.) I said something like, “Oh, it’s OK, I own the place.” and she went right ahead. It’s just words, after all.",
"parent_id": "400297",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "400302",
"author": "turn.self.off",
"timestamp": "2011-05-31T23:42:09",
"content": "This is just the tip of the 3d printing iceberg.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400318",
"author": "Hackerspacer",
"timestamp": "2011-06-01T00:35:38",
"content": "No need to marvel at the “precision” the reprap can produce. It’s more that these keys are so sloppy than the reprap is amazingly precise.And ABS keys….. with torque? No thanks, I would rather not dig a broken one out of a lock.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400323",
"author": "barry99705",
"timestamp": "2011-06-01T00:51:39",
"content": "@Urza9814That’s what those plastic colored key covers are for. A dab of super glue so it doesn’t come apart easily, beat it up a bit, and sharpie “house” on it. They almost never check.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400325",
"author": "Bob",
"timestamp": "2011-06-01T00:54:11",
"content": "Meh…I can look at your car key while its on the bar, read the bite, walk out to my car, kachunk me a quick copy, and open your car… cant drive it without the chip, but whats yours is mine…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400333",
"author": "Maave",
"timestamp": "2011-06-01T01:02:58",
"content": "@Urza9814Teeth on a key (usually) have 9 possibles heights. A locksmith can spot those teeth heights from a mile away and make a key with matching teeth. Whether or not he would actually do that for someone I’m not sure.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400338",
"author": "HacKan",
"timestamp": "2011-06-01T01:24:28",
"content": "It’s quite a nice idea, but lockpicking is a lot easier! This would be awesome for certain hard-to-pick locks, instead of every lock!Good work anyway ;)",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1155045",
"author": "Rich Grise",
"timestamp": "2014-01-04T04:00:10",
"content": "I once had a GF who had a kid who locked his key in the car that his dad had given him. We called a locksmith, and my GF, her kid, and her kid’s friend and I all went out to watch this guy pick the lock. He poked around and poked around and poked around, then stood up, said, “This isn’t working,” and walked over to the other side of the car. He had the lock picked before any of us even bothered to walk over and watch him. Like, three seconds! And none of us got to see him do it. )-;Back on topic, I wouldn’t trust a plastic key. I even broke off a brass one once, but the notch nearest the handle end was cut to the deepest level, leaving a weak spot.",
"parent_id": "400338",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "400339",
"author": "nrp",
"timestamp": "2011-06-01T01:35:03",
"content": "@HackerspacerPLA, not ABS, but you could always use a torsion wrench with it on a stiff lock.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400348",
"author": "Hackerspacer",
"timestamp": "2011-06-01T02:21:15",
"content": "What is PLA’s tensile strength vs ABS? No real desire to spend 5 minutes looking it up. This strikes me as more of a gimmick that works some of the time rather than a real solution. Now, laser sinter these or medicos in stainless or titanium and then you are on to something.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400351",
"author": "zacdee16",
"timestamp": "2011-06-01T02:29:57",
"content": "What about instead of a picture, you use something like radar to get measurements of the key? You might (this is a stretch) be able to use the radar to see the internals of the lock itself and generate a key for that so you don’t need access to the key.These are all just thoughts. Nothing concrete in my idea.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400358",
"author": "nick",
"timestamp": "2011-06-01T03:00:32",
"content": "Throw the model up on shapeways and you’ll get a stainless steel key…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400364",
"author": "Stevie",
"timestamp": "2011-06-01T03:51:54",
"content": "Seems like this project is getting a bit of a hard time. I doubt the idea is that the keys replace their metal counterparts full time. But as a handy cheap backup or a quick one-time key, it’s pretty cool.As someone said, you could use a torsion wrench if you’re that worried.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400389",
"author": "MorganLeFay",
"timestamp": "2011-06-01T06:27:42",
"content": "One word. Shapelock.Ought to do the job, AND you can melt it into a shapeless blob when the job is done.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400402",
"author": "jordan",
"timestamp": "2011-06-01T07:38:47",
"content": "It must be a glorious time to be a criminal. This sort of thing plus some social engineering and/or monitoring tools would make all kinds of grand heists more attainable.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400404",
"author": "Ben",
"timestamp": "2011-06-01T07:48:02",
"content": "+1 re: Sneakey suggestion",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400410",
"author": "uzerzero",
"timestamp": "2011-06-01T08:29:52",
"content": "I’m more intrigued by how he’s using the factory code to generate keys. It makes sense now that the factory code is a serial code and would correlate to the unique key, but I never knew this before.Also, maybe it’s just me or how the focus is blurred on the original key or the angle it’s taken at, but the second and third pins looks slightly off. Still, kudos for this interesting hack.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400411",
"author": "K!P",
"timestamp": "2011-06-01T08:30:45",
"content": "a lot of negative comments: Its a KEY! printed! Now wire the shopbot up so it can print my flying car. 2011 is here!nice job, and most locks dont need a lot of torque, just push/pull/lift the door a bit. if still worried use a tension wrench, this still works better (faster/less skill) than picking it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400419",
"author": "Lucia",
"timestamp": "2011-06-01T08:57:00",
"content": "This is an amazing, creative use of reprap, showing how weak key security is, at least for these keys, opening up possibilities and all I read here is ‘meh’ and retarded comments.Kudos to the hacker.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400426",
"author": "Entropia",
"timestamp": "2011-06-01T09:32:09",
"content": "I can’t believe people still use unsecure pin/tumbler-locks on their houses. Sheesh.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400427",
"author": "xorpunk",
"timestamp": "2011-06-01T09:36:23",
"content": "Even if you have high security locks(like a ASSA 8800 deadbolt), it’s stupid to depend on a door lock for home security. It needs an alarm.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "400455",
"author": "barry99705",
"timestamp": "2011-06-01T11:57:28",
"content": "I think your spell check changed firearm to alarm……",
"parent_id": "400427",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "400428",
"author": "Entropia",
"timestamp": "2011-06-01T09:51:44",
"content": "I have Abloy Exec at my apartment. ;-) No alarm though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400434",
"author": "jeff",
"timestamp": "2011-06-01T10:55:04",
"content": "@xorpunkeven if you have the best alarm system, it’s stupid to depend on an alarm for home security. you need a gun.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400442",
"author": "xorpunk",
"timestamp": "2011-06-01T11:30:41",
"content": "@jeff: indeed. Most people breaking into residential places are drug addicts and ex-cons who don’t have a care in the world.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400456",
"author": "smoker_dave",
"timestamp": "2011-06-01T11:59:23",
"content": "@MorganLeFayShapelock (called Polymorph here in the Uk) is no good for making keys.Like the person in this blog, I was strugling of things to make and the only thing I came up with was duplicating a key.I used a blob of Polymorph to make a mould, and then a second blob to create the duplicate key.The tolerances were well out, even on a very, very basic key. I was using a scalpal to clean it up, but still no use.Also for the thickness of the key, the Polymorph material was too flimsy. I was working on buiding the key around a sewing needle to give it some strength but lost interest very quickly.Btw, I think the point of this hack has been missed a little. He is not just “cloning keys”. If you give him the serial number from a lock, he can print you off a new key. Even without the original.Very cool.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400468",
"author": "xorpunk",
"timestamp": "2011-06-01T12:52:37",
"content": "@barry99705: no, crack heads and convicts tend to be quiet..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400478",
"author": "Kirov",
"timestamp": "2011-06-01T13:19:42",
"content": "Can it do ASSA Abloy type keys?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400482",
"author": "techjoker",
"timestamp": "2011-06-01T13:35:12",
"content": "Well I scoff at anyone who thinks any lock can keep their home secure! I haven’t seen many homes that can’t be ‘opened’ without a key in less than a minute or two. doors can be forced, windows opened…Locks are meant to keep honest people honest, nothing more.Alarms offer some piece of mind, but most of them aren’t that hard to get around if you know a little bit about how they are installed.Want to protect your property a shotgun and your presence is about the best way. Low light, bright light, no light, a little indiscriminate, but if your lurking in my house you won’t likely survive long.Creating a key from a serial number is a piece of cake too, that is done all the time.However, to this specific article I say great job. I have thought about building a reprap for a while now, but haven’t come up with many real world uses for one, so I haven’t done it. Being able to print a key for emergency use GREAT. To those who say plastic keys are stupid, I know a few years back you could by plastic keys (Auto and home) that were cut out of a credit card sized piece of plastic and fit neatly into your wallet. Will they stand up to daily use, probably not, but in an emergency, or to have another key made, sure works great, go through metal detectors too, so travel is easier. Though they would probably be considered a weapon.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400488",
"author": "xorpunk",
"timestamp": "2011-06-01T13:48:24",
"content": "@Kirov: for sure the main tumblers, the side-bar is another question. Dimple keys would also be interesting.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400500",
"author": "raged",
"timestamp": "2011-06-01T14:36:13",
"content": "i don’t have a raprap but couldn’t you inlay some metal to give it more tinsel strength? Could you just print on one/both sides of a strip of steel/copper?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400645",
"author": "YaBa",
"timestamp": "2011-06-01T21:11:25",
"content": "Hundred-dollar locks and special keys…state of the art alarms… shotguns… big dogs…Why? who whould want to steal your Star Wars collection?:)Just kidding. Nice project, out of the box thinking :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400712",
"author": "Standard Mischief",
"timestamp": "2011-06-02T00:07:47",
"content": ">Locks are meant to keep honest people honest, nothing more.Locks are meant to throw up a physical and psychological barrier to thieves. Even if they are not perfect security (and what is?), they cost a bugler time and make him more conspicuous.I have a >$100 deadbolt on my front door even though I know that someone could get inside quickly with only a circular saw (2×4, siding, drywall and a bit of insulation). He’d be pretty conspicuous doing so, where he could probably open a KW1 lockset with a bumpkey quietly in about 30 seconds.Back this up with an alarm or dog, a cellphone, and a personal firearm.When seconds count, the police are only minutes away – youtube /watch?v=OkS8mdbml0A",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,178.311057
|
||
https://hackaday.com/2011/05/31/electronic-bird-house-monitoring-goes-a-few-steps-further/
|
Electronic Bird House Monitoring Goes A Few Steps Further
|
Mike Szczys
|
[
"Arduino Hacks"
] |
[
"bird house",
"humidity",
"infrared",
"temperature",
"webcam",
"wifi"
] |
[Stephen Albers] offers his avian friends a lot of extras with this
electronically monitored bird house
. This will not only give you a look at what’s going on inside, but provide a source for several other bits of data as well.
First off, a camera has been mounted to the underside of the roof. This looks down on the nesting area and features night vision so that you can peek in any time day or night. He used a WiFi webcam that operates separately from the other electronics.
With the remainder of the setup he is able to harvest temperature and humidity data inside, temperature outside, force on the bottom of the house (although this turned out to be less useful than anticipated), and a in-and-out count for the doorway provided by an IR transmitter/receiver pair.
This offers quite a bit more than
the last bird house project we saw
. That one also left a lot to be desired as far as protecting the electronics. [Stephen] didn’t skip on that kind of protection. Most of the electronics are housed in an acrylic chamber in the base of the house. The sensors find themselves nestled in plastic enclosures, although some work needs to be done to ensure that the temperature and humidity sensors will still function correctly with this setup.
| 7
| 7
|
[
{
"comment_id": "400286",
"author": "The Cheap Vegetable Gardener",
"timestamp": "2011-05-31T22:52:12",
"content": "Cool setup, though not sure any birds will be brave enough to stay inside…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400291",
"author": "Alex",
"timestamp": "2011-05-31T23:10:26",
"content": "Cool, if not a bit overkill. I do have a couple of observations (constructive criticism, not whining). For one, the humidity sensor is in a sealed box – and will probably never change. Maybe add a hole or two for some airflow.Also the IR camera – won’t this interfere with the IR in/out sensor? And can birds see IR? Might drive them away…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400330",
"author": "andres",
"timestamp": "2011-06-01T01:00:44",
"content": "neat project. seems like that 7805 regulator on the back is quite the eyesore. a small switching regulator would be better. nicely done though!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400337",
"author": "J",
"timestamp": "2011-06-01T01:15:39",
"content": "@ AlexThey can’t. (I can’t believe i even looked it up, i have too much time on my hands, maybe i should build a birdhouse…)http://www.birds.cornell.edu/nestinginfo/nestboxcam/06_archives/barn_owl_ca/ca_ba_comments/talkback/1142621973/discussionitem_view",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400354",
"author": "zacdee16",
"timestamp": "2011-06-01T02:43:35",
"content": "@Alex, I don’t think they can see IR, but they see a lot of ultraviolet.http://en.wikipedia.org/wiki/Bird_visionAnd instead of drilling holes in the temp enclosure, you could find the temp difference that is made by it and then calculate the difference into your readings. This could help a lot, and make your sensor last longer.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400527",
"author": "Alex",
"timestamp": "2011-06-01T16:16:46",
"content": "@J, zacdee16:Thanks for the info on IR, lol.As far as hole drilling goes though, with the humidity sensor in a sealed box the humidity will never change no matter what the humidity is outside it, unlike the temperature.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400921",
"author": "Harvie.CZ",
"timestamp": "2011-06-02T13:33:25",
"content": "Put the heatsink inside, birds will love to get little warm.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,178.355973
|
||
https://hackaday.com/2011/05/31/modular-synthesizer-is-rack-mounted-and-reconfigurable/
|
Modular Synthesizer Is Rack-mounted And Reconfigurable
|
Mike Szczys
|
[
"Musical Hacks"
] |
[
"module",
"rack",
"synthesizer"
] |
[Dirk] let us know about this fantastic
music synthesis experimentation setup
(
translated
). Turn your computer speakers off (to avoid the auto-playing music when every page loads) and dig into the wealth of information in this repository. Literally dozens of modules have been built and superbly mounted on a rack system. Each can be connected with other modules into an incredible number of different setups using patch wires that terminate with banana plugs.
The module enclosures
themselves are made to fit in a standard 19″ rack. The front bezels were designed in CAD, with the rest of the housing made mostly of aluminum. Since each module tends to be quite small several are ganged into one rack skeleton to save space. You can see in the images above that there are as many as eight modules per rack slice.
You’ll enjoy reading about the
many different sound chips
that are in use here. But it doesn’t have to end there. If this has whet your appetite for your own rack-mounted system you’re in luck. The
download area
has schematics, board artwork, and build information for most of the modules.
| 9
| 9
|
[
{
"comment_id": "400255",
"author": "Hackerspacer",
"timestamp": "2011-05-31T21:04:00",
"content": "Reminds me of:http://peteann.hypermart.net/freepix/Men-Women-Switches.JPG",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400259",
"author": "Hackerspacer",
"timestamp": "2011-05-31T21:18:17",
"content": "Are all of his patch cables made from oxygen free copper Monster brand, carbon fiber and kevlar braided cables with magical pixie dust or are they simply normal copper patch cables like they appear to be? I hear that professional musicians need to produce high quality recordings and all. Seems odd that they don’t need such high quality cables to do a good job, right?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400265",
"author": "dattaway",
"timestamp": "2011-05-31T21:32:28",
"content": "Great read on the history of sound chips. I wish there were SPI versions for easy hookup to an Arduino.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400281",
"author": "Kuhltwo",
"timestamp": "2011-05-31T22:21:56",
"content": "reminds me of the “old” Moogs. Also of my days as an Instrumentation Tech in pre-digital days.Really gorgeous work",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400287",
"author": "Nemo",
"timestamp": "2011-05-31T22:55:16",
"content": "I kind of liked the autoplaying music actually. It added some drama to the page. A good read for sure, and a great project.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400310",
"author": "foo",
"timestamp": "2011-06-01T00:05:02",
"content": "There are now more modular synth manufacturers then there was in the 60s 70sWith the internet came a huge resurgence in interest check analogue haven for manufacturers and electro-music.com muffwigglers.com for diy forumsGoogle yusynth, cat girl synth, oakley modular, motm, mfos, papareil, fonitronik, jurgen haible, ian fritz, bridechamber, tellun corp,for diy projects",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400349",
"author": "Reggie",
"timestamp": "2011-06-01T02:23:24",
"content": "It reminds me very much of the doepfer A100 modular systemhttp://www.doepfer.de/home_e.htmI hope the guy mentioning the cabling is trying to be funny, with all that analog gear hooked up, the type of cables is going to be the least of his worries :D Just some bog standard 1/4″ mono jack leads will be fine.Just looked through some of the modules and he is in fact using some doepfer stuff :) I’m dead impressed with the ‘stuff’ he’s assembled there, lots of analog things for creating twisted ‘uncopyable’ noises, classic drum machines and sequencers, midi control, external trigger/clock for sequencer, lots of outputs, + all filters etc. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400458",
"author": "Sylwester",
"timestamp": "2011-06-01T12:15:11",
"content": "@Reggie:Afaik the cabling part is not the fun part. Themain advantage of using the banana jacks is: youcan stack the banana jacks together.I have seen Dirk’s synthesizer in real life – and yes – It’s a big mighty modular machine.Especially the “Synth” section on the website is really interesting.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400653",
"author": "Reggie",
"timestamp": "2011-06-01T21:38:21",
"content": "@sylvester:I’m highly aware of what the cables are for, they’re simple to use, easy to find, cheap patch cables, the fun is in the patching :)",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,178.404611
|
||
https://hackaday.com/2011/05/31/library-makes-arduino-to-arduino-serial-communications-dead-simple/
|
Library Makes Arduino To Arduino Serial Communications Dead Simple
|
Mike Nathan
|
[
"Arduino Hacks"
] |
[
"arduino",
"data",
"library",
"packets",
"serial"
] |
When [Bill Porter] works on a project, he says that he typically writes his own NMEA standard communications protocols to fit the job at hand. While it makes things easy to troubleshoot, he admits that his custom protocols are wasteful of both processor time and bandwidth. Binary communications on the other hand are more efficient, but a bit trickier to manage.
To make things easy for the common user,
he wrote a library called EasyTransfer
which abstracts packetized serial communications between two Arduino boards. The process is pretty simple – all one has to do is define a data structure on both Arduino boards so that they know what sort of data is coming over the wire, and EasyTransfer handles the rest. This allows users to worry less about communications protocols or transmission errors, and focus on their projects instead.
If you’re working on a project and searching for an easy way to get a pair of Arduinos talking, swing by his site and grab the library. It doesn’t get much easier.
| 12
| 11
|
[
{
"comment_id": "400233",
"author": "Bill",
"timestamp": "2011-05-31T20:11:56",
"content": "Thanks for the post Mike, though I really didn’t think this warranted a full post, I was only hoping to be in the next ‘Arduino Moment’ combo article.I wrote this in a day as a way to help out the handful of people that email me asking for help getting one Arduino with a PS2 controller (using my other library) to talk to the other. It’s a simple library with not much to it.Most Arduino user will undoubtedly know how to handle communications. This library is nothing special; it was targeted for the extreme beginner with no idea how to begin.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1638202",
"author": "Ricardo Barrera",
"timestamp": "2014-07-14T22:18:33",
"content": "Will this work with multiple Arduinos (i.e. 6) ? What connections need to be wired up?I am a beginner.",
"parent_id": "400233",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "400250",
"author": "DarkFader",
"timestamp": "2011-05-31T20:49:34",
"content": "“What’s better than one Arduino?” they must have thought.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400314",
"author": "Jack",
"timestamp": "2011-06-01T00:13:17",
"content": "How you guys compare this with VirtualWire library ? RF modules nowadays are deadly cheap, is it better when you can use two Arduinos in distance and still be able to communicate to each other ?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400378",
"author": "Nadir",
"timestamp": "2011-06-01T05:24:30",
"content": "details() function is missing!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400464",
"author": "Bill",
"timestamp": "2011-06-01T12:35:35",
"content": "@Nadirdetails() is not a function but a macro located in the .h file. Are you having trouble compiling?@JackWho’s comparing? VirtualWire is for a different purpose, using ASK radios. This is for using UARTS to communicate.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400467",
"author": "Nadir",
"timestamp": "2011-06-01T12:45:15",
"content": "“details() function is missing!”Sorry my fault.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400481",
"author": "Bill",
"timestamp": "2011-06-01T13:30:02",
"content": "np Nadir.If you are trying out the library let me know what you think of it. I’ve only had one non-expert person try it so far and give me feedback. If this really does prove useful I will try to add some features.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "724664",
"author": "ben",
"timestamp": "2012-08-05T20:56:10",
"content": "what about communication through rf module 434Mhz",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "910109",
"author": "Freddy15",
"timestamp": "2012-12-27T04:46:13",
"content": "How long can the cables between the arduinos be before communiction is no longer possible?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "1400253",
"author": "Newmaqn",
"timestamp": "2014-05-01T18:13:11",
"content": "I’ve been tearing my hair out trying to make 2 Arduinos talk.This is just what I needed – thanks, Bill and yes, please add more features!thanks, Newman",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6178477",
"author": "Power_Broker",
"timestamp": "2019-09-09T20:36:24",
"content": "Anyone interested in doing Arduino to Arduino serial communication, check out this library that handles all of the difficult parsing for you (it even includes delimiting, Consistent Overhead Byte Stuffing (COBS), and Cyclic Redundancy Checking (CRC)):https://github.com/PowerBroker2/SerialTransfer",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,178.734328
|
||
https://hackaday.com/2011/05/31/run-kindle-3-firmware-on-kindle-2-hardware/
|
Run Kindle 3 Firmware On Kindle 2 Hardware
|
Mike Szczys
|
[
"handhelds hacks",
"Kindle hacks"
] |
[
"firmware",
"kindle"
] |
After about six weeks of testing [Yifanlu] has released a stable version of the
Kindle 3 firmware for use with Kindle 2 hardware
. Everything seems to be working just fine with the patched firmware. We immediately jumped to the conclusion that the upgrade must run pretty slow on the older hardware. [Yifanlu] addresses that assumption in his post. The Kindle 2 hardware is not as fast as the Kindle 3, but it sounds like the upgraded firmware is no slower than the stock firmware was on the older units.
Since the firmware is proprietary, the upgrade method requires that you own both Kindle 2 and Kindle 3. Three scripts will pull the firmware image from the older hardware, copy it over to the new hardware and patch it at the same time, then copy the fully patched package back to the old hardware for use.
After the break you can see a video of a Kindle DX running 3.1 firmware. There’s also a link to the Reddit post where commenters have linked to pre-compiled versions of the patched package.
[youtube=http://www.youtube.com/watch?v=OMFIYSGLz4M&w=470]
[Thanks Jason via
Reddit
]
| 12
| 10
|
[
{
"comment_id": "400223",
"author": "tux",
"timestamp": "2011-05-31T19:21:33",
"content": "it would be awesome if he found a way to solve the constant lockup problems the kindle seems to have",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400240",
"author": "Bill",
"timestamp": "2011-05-31T20:22:49",
"content": "Just in time for those of us that got the $85 Refurb Kindle 2 3G on woot last week.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400253",
"author": "zigzagjoe",
"timestamp": "2011-05-31T20:53:34",
"content": "Kindle 3 has the same processor as kindle 2. The only difference as kindle 3 has 256mb of ram vs 128 on kindle 2.At any rate, I’ve been waiting for a version that does not require a kindle 3 host. I’d been toying around with this idea myself but never got around to actually doing it.+1 for doing what amazon is being too corporate to do themselves.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "400254",
"author": "Xiong Fan",
"timestamp": "2011-05-31T21:01:41",
"content": "I think the post mentioned this, but there is a precompiled image (aka no host required):http://www.reddit.com/r/kindle/comments/hmyo5/hack_to_install_kindle_3x_on_kindle_2_and_dx/c1wofmx",
"parent_id": "400253",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "400257",
"author": "Bill",
"timestamp": "2011-05-31T21:11:26",
"content": "@tuxYou aren’t talking about the issue they found where clip on covers were shorting the battery?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400271",
"author": "·",
"timestamp": "2011-05-31T21:54:06",
"content": "@Bill: That’s not what it does:http://www.eevblog.com/2010/12/23/eevblog-135-kindle-case-mythbusting/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400370",
"author": "kd5uzz",
"timestamp": "2011-06-01T04:31:23",
"content": "now if only we could get the ability to checkout epub books from the library like most other ebook readers…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400405",
"author": "Isaac",
"timestamp": "2011-06-01T07:50:44",
"content": "Does anyone know the main differences between the two firmwares or a link to a list somewhere. I’m just curious if there’s anything compelling enough to make me change over.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400466",
"author": "Bill",
"timestamp": "2011-06-01T12:43:18",
"content": "@.Amazon admitted the problem and offered replacements for the case. I more inclined to believe that then some random blogger.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400771",
"author": "Jiang",
"timestamp": "2011-06-02T04:48:49",
"content": "Not bad! It works for me. I think it would be fun to have a totally homebrew firmware, though.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "400781",
"author": "Xiong Fan",
"timestamp": "2011-06-02T05:55:36",
"content": "Look up duokan. It’s an alternative for kindle OS.",
"parent_id": "400771",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "1014701",
"author": "ruxkor",
"timestamp": "2013-06-10T15:27:02",
"content": "Incredibly useful, especially since Amazon started re-selling the Kindle DX. Thanks!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,178.626175
|
||
https://hackaday.com/2011/05/31/laser-powered-dslr-auto-focus-assist-light/
|
Laser-powered DSLR Auto Focus Assist Light
|
Mike Nathan
|
[
"digital cameras hacks"
] |
[
"auto focus",
"camera",
"canon",
"hot shoe",
"laser pointer"
] |
[Adrian] uses his Canon 40D quite often in dark or low-light situations, and found the onboard auto focus assist functionality to be a bit frustrating. In certain focus modes, the auto focus assist light is programmed to turn off once focus has been achieved. He noticed that if his subject moves or the focus point changes before he snaps the picture, the AF light does not come back on to assist in refocusing the image.
To work around this problem,
he decided to build a supplemental auto focus assist light
that could be triggered at will. He purchased a cheap laser pointer with an adjustable lens, then cut it open to get at the good parts. He mounted it on top of his camera and tweaked the lens to produce an unfocused beam of light that measures about 6” x 12” at five feet.
The laser pointer did the trick – his images are coming out much nicer now that he can easily recompose his shots in low light. While it works great, he’s not completely satisfied with the build, especially with the fact that he has to manually trigger the laser pointer.
Version 2 is in the works however, which employs an old hot shoe to trigger the laser whenever he pushes the shutter release halfway down. According to his blog
he is having some timing issues
, causing him to capture the laser in most of the pictures he takes. [Adrian] is working hard to correct the problem, and we’re sure he’d appreciate any tips you might have.
| 28
| 28
|
[
{
"comment_id": "400206",
"author": "am",
"timestamp": "2011-05-31T18:36:20",
"content": "Great idea! I should try it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400207",
"author": "Bogdan",
"timestamp": "2011-05-31T18:37:14",
"content": "I think IR light will also do the trick, but i haven’t tried it.If it does, you just have to swap the laser for an IR one or some IR LEDs that can be left on all the time as they will not be seen in the picture.Maybe i’ll give this a try some time.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400208",
"author": "Luke",
"timestamp": "2011-05-31T18:45:47",
"content": "Canon needs to give this person a job. An integrated laser is a much better solution than carrying around a big ass flashlight (like I do).@Bogdan, the CMOS censors in the Canon cameras (and CCD in others) are sensitive to near infrared. It would likely show up in images. Also the auto focus works on visible light otherwise the focus would be off since infrared travels through the glass in the lens differently than visible light.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400209",
"author": "graymalkin",
"timestamp": "2011-05-31T18:46:38",
"content": "Quite cool, perhaps he could mod a lens such that when the camera attempts to AF the laser is fired with it, and stops firing when it’s done focusing?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400214",
"author": "I'm your father",
"timestamp": "2011-05-31T18:51:49",
"content": "@Luke: Yes, they are sensitive to near infrared; which is why they have an infrared filter in front of the sensor.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400215",
"author": "fartface",
"timestamp": "2011-05-31T18:52:04",
"content": "any decent camera flash will increase the AF light and you really do need to project a pattern as AF uses vertical edges to focus on.My low grade “promaster” flash has a huge AF assist lamp on front. make a huge difference than the useless built in one on the Canon DSLR’s.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400216",
"author": "Nick",
"timestamp": "2011-05-31T18:59:20",
"content": "(Warning, I don’t know electronics well)You could use the signal on the hotshoe to turn OFF the laser for xxx milliseconds while the camera is taking the picture, then leave it on as long as it’s switched on. Sure, not completely automated, but better than the current situation.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400218",
"author": "James",
"timestamp": "2011-05-31T19:01:38",
"content": "To be fair, im fairly sure you could just change the af assist function to always fire, though on some cams it would be a firmware change?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400220",
"author": "Bob",
"timestamp": "2011-05-31T19:15:49",
"content": "You can easily add a AF light that shuts off for the exposure by using the flash to trigger the light off:http://forums.dpreview.com/forums/readflat.asp?forum=1041&message=35988059",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400222",
"author": "Bob",
"timestamp": "2011-05-31T19:18:32",
"content": "http://forums.dpreview.com/forums/read.asp?forum=1041&message=35983456",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400248",
"author": "Renee",
"timestamp": "2011-05-31T20:38:19",
"content": "Interesting. Though I don’t see why one doesn’t just mark on the lens the distances associated with focus.This is basically substituting technique for convenience.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400249",
"author": "Bogdan",
"timestamp": "2011-05-31T20:42:36",
"content": "@Renee They don’t do that because not all lenses are parfocal(the same position of the focus ring doesn’t correspond to the same focus distance for various focal distances) and because in some cases the DOF is so small that a few cm off will make the photo useless.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400252",
"author": "Renee",
"timestamp": "2011-05-31T20:51:14",
"content": "Not knowing the subject of the photo I can’t really say much as to how much freedom can be take with DOF so I agree with you.However, it’s not entirely a grand mystery as to the nature of his lens. Making the safe assumption that it’s his camera in the pictures, he has a 50mm 1.14.It’s not that hard to learn the in and out of the focusing of a fixed focal length lens. Even including DOF.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400367",
"author": "aw",
"timestamp": "2011-06-01T04:10:31",
"content": "I have not tested it but if you search ettl pinout you can find a page with the pinout from the flash hotshoe. If I recall correctly the bottom left pin goes high when you hold the focus. I’m sure that logic can be used to turn on and off a LED.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400391",
"author": "bothersaidpooh",
"timestamp": "2011-06-01T06:30:46",
"content": "Watch your eyes though, because you can’t see it the danger of reflections is high.There is a good reason why they only used a 10mW diode in the Kinect.IIRC its a VCSEL, because they are single mode AND power limited due to the construction, so in worst case they just stop working rather than generating a dangerous situation.Same as “laser” mice which are just the thing for low power (1mA!) beam break detectors.Check out your local PC shop as they seem to regularly fail due to blunt force trauma and normally the diode lives on.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400408",
"author": "kombizz",
"timestamp": "2011-06-01T08:14:04",
"content": "It seems it is working – He did a good job. There are lots of application to his work. Hope Canon learn from him.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400432",
"author": "loans",
"timestamp": "2011-06-01T10:22:48",
"content": "Renee,do you have laser rangefinders for eyes? I know that shooting wide-open at f/1.8 I could never nail focus just with the index on the lens, for a variety of reasons.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400444",
"author": "another",
"timestamp": "2011-06-01T11:34:29",
"content": "I like how things are overengineered. From manual triggering to hotshoe sensors, arduino to time… Why not just stick a photodiode on the original AF lamp that will trigger the custom AF lamp?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400461",
"author": "Renee",
"timestamp": "2011-06-01T12:30:09",
"content": "I have a piece of tape that I use and I mark it with a pencil. If I know the general area my subject is going to be in, I mark the nearest and farthest point.Lenses use to have information like this printed right on them in the form of nice adjustable scales. I don’t know why they got rid of them. Probably because digital just makes everything super convenient.Not that I have a complete problem with that but it does cause some unnecessary reinventing of photography.How do you think people focused before autofocus was invented?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400462",
"author": "Life2Death",
"timestamp": "2011-06-01T12:32:52",
"content": "Sony has had two cameras that do this – the V1 and V3 both I had the pleasure of owning, awesome p/s cameras for their time.They blast a hologram on the subject and can see it plain as day, and can calculate range via it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400498",
"author": "James",
"timestamp": "2011-06-01T14:27:21",
"content": "How do you think people focused before autofocus was invented?(Even more) Inconsistently.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400499",
"author": "James",
"timestamp": "2011-06-01T14:30:23",
"content": "BTW – @bothersaidpooh, the kinect IR laser is 60mW.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400528",
"author": "bogdan",
"timestamp": "2011-06-01T16:17:37",
"content": "@aotherthat is the original problem, the normal af assist lamp doesnt stay on all the required time…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400664",
"author": "DivePeak",
"timestamp": "2011-06-01T21:52:03",
"content": "How do you think people focused before autofocus was invented?Cameras came standard with viewfinders that made it easier (split screen, microprism, etc) while now they just have ground glass. I can’t manually focus visually in low light, and I’m poor at judging distance so the distance markings are not a huge help to me.This is a brilliant idea. Too bad I don’t know enough about the electronics of the camera to offer any help.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401319",
"author": "loans",
"timestamp": "2011-06-03T11:45:51",
"content": "How do you think people focused before autofocus was invented?The same way I do with my MF lenses? Not well, in the dark. If you’re not looking at the ground glass, then a focus scale isn’t going to help at wide apertures, because a tiny movement of most focus rings is going to put your subject right out of the plane of focus.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401489",
"author": "Emm",
"timestamp": "2011-06-03T20:10:03",
"content": "The Canon ST-E2 or External Flash uses an infrared light to focus in complete darkness. Canon already has that solution.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "439064",
"author": "Kyle Hailey",
"timestamp": "2011-08-21T20:46:18",
"content": "@Emm – the ST-E2 has a focus assist just like the ohter main Canon flashes – nothing special and it’s regular light. The IR is used, not for focus assist, but for communication ETTL info between the ST-E2 and other flashes.@Renee – At 50mm f1.4 there is no room for error – 1 cm off can ruin the photo – yes eyes out of focus and nose in focus . There is no way a average human could make the calculations necessary with out some electronic help.– Kyle",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "522509",
"author": "flashingscotsman",
"timestamp": "2011-11-30T04:54:56",
"content": "@Renee I used to focus just fine in lower light situations before AF. I also had split screen to help me, and much younger eyes. Now, my problem is how to focus when using off camera flash, and shooting dancers that are continuously moving. Kinda hard to chase them around with a tape measure, or to see any markings that I might put on the lens, while chasing them around a dark room.I saw a guy the other night that was using off camera flash, but had a red focus assist light on top of his camera. Anyone have any idea what that was?",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,178.691471
|
||
https://hackaday.com/2011/05/31/guitar-pickup-101/
|
Guitar Pickup 101
|
Jesse Congdon
|
[
"Musical Hacks"
] |
[
"guitar",
"guitar pickup",
"hackaweek",
"winder"
] |
[Dino Segovis] is at it again! For this week’s installment of his “Hack A Week” series [Dino] is holding a guitar pickup
winding 101
. Professional guitar pickups can cost hundreds of dollars, but are all essentially a permanent magnet wrapped in a bunch of wire. Using some cheap headphones, magnet wire, and a spare bolt [Dino] produces his own pickup and throws it in a one string blues guitar. This is a great beginner’s project as it involves only a few very easy to find parts and touches on some interesting concepts such as inductance and magnetic flux.
The premise is really simple: Sandwich the headphone magnet between two plastic discs to make a spindle, hot glue a 1/4″ bolt to the spindle, connect to a power drill, and wind a few thousand loops of magnet wire onto the thing. Hook your coil up to an amp and lay down a jam.
We might be tempted to add a counter to the rig using a reed switch connected to the “=” key of a cheap pocket calculator, and a magnet glued to the bolt. We have also seen a more complicated
automated
spool winder but [Dino] is keeping it nice and simple.
Check out the video after the jump to hear [Dino] go all Seasick Steve on us.
[youtube=http://www.youtube.com/watch?v=wKS0ZWCHI4g&w=470]
| 18
| 18
|
[
{
"comment_id": "400183",
"author": "devcoder",
"timestamp": "2011-05-31T17:15:23",
"content": "and just like that the video is gone",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400184",
"author": "hoooooooooooooooooorj",
"timestamp": "2011-05-31T17:17:32",
"content": "I’m not sure where you guys might source this gauge of magnet wire easily, but I have only been able to find it in relatively high bulk (a pound or two) at around $30/lb. That’s not terrible for me, because I build guitars as a hobby, but if I were someone just dicking around, I would be apprehensive about getting that much wire.Also, it seems the video has been removed.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400188",
"author": "Jesse Congdon",
"timestamp": "2011-05-31T17:37:52",
"content": "Fixed the video, hopefully that sticks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400191",
"author": "Adam Ziegler",
"timestamp": "2011-05-31T17:59:22",
"content": "I used to design a build pickups… been about 10 years. At that a group of guys from the pickup-building community started up a re-sale of magnets, bobbins, and magnet wire for hobbyist winders. I did some quick searches and can’t seem to find them around any more. There was a very informative forum at the time too… this might get some folks on the right path:http://www.firebottle.com/fireforum/fireBB.cgi?cfg=gt&forum=pmgd&enter=go",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400192",
"author": "brad",
"timestamp": "2011-05-31T18:00:21",
"content": "I wound my own pickup for a 3 string cigar box guitar last year. I bought ~12k feet of 43 ga wire on ebay for something like $8.I used an electric drill, but no counter – just wound till the spool I made was full. Wrapped the wire in twine and dipped in wax to eliminate air. The permanent magnets were 3/16″ x 1/2″ neodymium.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400228",
"author": "CRJEEA",
"timestamp": "2011-05-31T19:56:33",
"content": "Think I will be using the counter from an old tape recorder (saves wasting a perfectly good calculator that I can make into somthing a lot more interesting)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400235",
"author": "alan",
"timestamp": "2011-05-31T20:13:28",
"content": "Why bother with any form of counter?If you know the diameter of the bolt that you are winding onto, you know the gauge of the wire and you know how many turns you want, then you easily can calculate what length of wire is required. Just cut a length slightly over size and wind till its almost all gone.Simples!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400237",
"author": "Jonathan",
"timestamp": "2011-05-31T20:17:34",
"content": "Nice!AFAIK however, loudspeaker magnets concentrate as much energy as possible in the narrow gap where the voice coil hangs, and not so much outside. (making the flux pattern very different than the presented one)There’s obviously enough leakage for it to work nicely, but if you have some conventional magnets (like [brad]’s) hanging around, you might be better off using them rather than sacrificing a speaker.A lower efficiency pickup _is_ a good excuse to push your amp to 11 though :DJo",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400256",
"author": "pff",
"timestamp": "2011-05-31T21:08:30",
"content": "I have seriously never heard anyone call enamel wire “magnet wire” before.ever.is this just an american thing?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400263",
"author": "brad",
"timestamp": "2011-05-31T21:30:26",
"content": "@alanwhen some pickups take 5000-8000 feet of wire, it’s not that simple… :P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400267",
"author": "Jonathan",
"timestamp": "2011-05-31T21:39:52",
"content": "If you’re a cyclist, you can probably rig your odometer to count the turns quite easily, without modifying anything.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400268",
"author": "Whatnot",
"timestamp": "2011-05-31T21:41:21",
"content": "That enamel wire is in so many products like old speakers and electric motors and such, surely you can find some junk that has a coil inside?Old computer fan maybe? Or old toy with an electric motor?@pff I see it more an more, I guess it’s how they call it when they teach kids with their first experiments in electromagnetism? even though it causes confusion since people think it’s some kind of special material.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400341",
"author": "t&p",
"timestamp": "2011-06-01T01:41:52",
"content": "I would call it a one string dulcimer. I made one in grade school ooooh so long ago in music class.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400376",
"author": "D_",
"timestamp": "2011-06-01T04:50:28",
"content": "An electric “strum stick”. Just don’t use the term strum stick where the guy who has trade marked it hear you. He will get on your case. I wonder if using the coil from the speaker that magnet was scavenged from would function as a pickup coil?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400439",
"author": "Whatnot",
"timestamp": "2011-06-01T11:23:39",
"content": "The speaker coil is always hard to separate from the plastic in those toy speakers (without breaking it), and it’s very thin and weak wire.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400759",
"author": "Peter Hiscocks",
"timestamp": "2011-06-02T03:15:37",
"content": "For anyone interested in measuring the amplitude and phase response characteristics of guitar pickups, there is an application note on our company web page:Measuring Impedance and Frequency Response of Guitar Pickupshttp://www.syscompdesign.com/AppNote.htmlunder ‘Applications & Educational Papers’.Peter",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401743",
"author": "Don",
"timestamp": "2011-06-04T19:36:32",
"content": "So technically, if I wanted to make a hex pickup, I could take the pole magnets from a regular pickup, remove the coil, and individually coil them?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "1081738",
"author": "Ricky Ricardo",
"timestamp": "2013-10-23T11:48:08",
"content": "Use the primary from a 12vdc adapter. It’s is just about right or if you can wait just buy a chinese pickup ready to go for $5seaguy@juno.com",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,178.791084
|
||
https://hackaday.com/2011/06/03/diy-high-voltage-electric-field-detector/
|
DIY High Voltage Electric Field Detector
|
Mike Nathan
|
[
"Tool Hacks"
] |
[
"diy",
"electronic field",
"high voltage",
"jfet",
"tools"
] |
Who needs a Fluke high voltage detector
when you’ve got one of these things
?
Actually, we still recommend a professional high voltage detector for serious work, but you’ve got to like this electric field detector that [Alessandro] recently put together.
The detector works by using a JFET to detect the high impedance electric fields that are generated by high voltage lines. The JFET amplifies the signal while dropping the impedance in order to drive a pair of NPN transistors which are used as a threshold amplifier. Once the voltage hits 3V, an LED is lit, indicating the presence of high voltage near the detector’s probe. A wire-wrapped resistor does double-duty serving as the probe while providing a high impedance path to ground, ensuring that stray charge does not accumulate on the JFET’s gate, causing false readings.
It’s a neat project, and something that can be constructed in no time, making it perfect for beginner electronics classes.
Keep reading to see a quick video of the HV detector in action.
[youtube=http://www.youtube.com/watch?v=Pp0A6QvwqQE&w=470]
| 23
| 21
|
[
{
"comment_id": "401506",
"author": "Jimbo",
"timestamp": "2011-06-03T21:21:43",
"content": "Kraus’ textbook “Electromagnetics” has a similar circuit for detecting atmospheric potentials and can be used to observe lightning discharges by putting the probe up high on a pole or chimney.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401513",
"author": "peony",
"timestamp": "2011-06-03T21:53:06",
"content": "i build something very similar this morning before this project was posted. I used a schematic from the first book of transistor circuits from talkingelectronics.comit uses 3 standard npn transistors, instead of 2 and the jfet, so is even more suited to beginners making stuff using junkbox bits!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401526",
"author": "Alan Yates",
"timestamp": "2011-06-03T22:56:43",
"content": "Cool. I like the leakage gate resistor, a diode pair might work just as well and protect the input a bit more too.Personally I’d redesign it for ultra-low quiescent current and 3V supply so it might be rendered into a keychain form factor with no power switch.Maybe a complementary pair monostable biased close to triggering and just the front-end JFET standing a few microamps with capacitive coupling into the monostable?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401534",
"author": "Chris",
"timestamp": "2011-06-03T23:28:57",
"content": "I have a graphite fiber tripod, and for some reason, whenever I am near high tension wires, it feels differently. I can literally feel some kind of process going on when I slide a finger along the tripod – its a 60 Hz – …something…My wife can’t feel it, I do. Its very noticeable. Anybody have any idea what’s going on, or experience something similar?Also, in the UK, I think, there is an artist who creates installations under high tension wires with grid-like arrays of flourescent tubes.. In that heavily energized a location, they flicker without being connected to the “mains” as they call it. Its eerie..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401546",
"author": "mvh",
"timestamp": "2011-06-04T00:09:53",
"content": "Chris, carbon fiber tends to be conductive, I’ve no doubt that there could indeed be some induction happening.I seem to recall there being a few cases of someone fishing near a high voltage line getting a slight case of the death when his carbon fiber fishing pole got a bit too close to the power line.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401557",
"author": "dattaway",
"timestamp": "2011-06-04T01:00:07",
"content": "I sometimes enjoy stringing transistors together in a darlington configuration. Just touching the base of the first will light an LED for a minute, much like a mosfet.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401565",
"author": "GZ",
"timestamp": "2011-06-04T01:06:15",
"content": "we used to use a bulb in some fish tank hose. I think it was florescent or neon… it would glow orange when you got it near the fly back transformer on a tv.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401568",
"author": "Tony",
"timestamp": "2011-06-04T02:08:34",
"content": "Using a FET to detect static has been around for a while, see –http://amasci.com/electrom/e-field2.htmlfor a simpler version.I’ve never had the enthusiasm to build a display like that though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401610",
"author": "Mustafa",
"timestamp": "2011-06-04T07:51:57",
"content": "I don’t get it. What is the purpose of TR2 there?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401637",
"author": "strider_mt2k",
"timestamp": "2011-06-04T10:32:34",
"content": "I love it!It needs a nice analog meter though, don’t you think?Wouldn’t that give a more dynamic readout than a simple on/off LED, or am I misunderstanding?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401940",
"author": "ejonesss",
"timestamp": "2011-06-05T13:32:01",
"content": "couldnt you use this as an emf detector for ghost hunting?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401955",
"author": "MDude",
"timestamp": "2011-06-05T14:17:39",
"content": "Only if you’re after the ten thousand volt ghost.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402184",
"author": "Alessandro",
"timestamp": "2011-06-06T08:49:12",
"content": "I’m the author, a few notes to comments:1) if you are after ghosts, JFETs are the answer, BJTs are out, so this circuit might be what you’re looking for…2) the LED blinking in the video is due to camera frame or CCD scanning while heterodyning with the LED flashing at 50Hz, sort of.3) The purpose of TR2 is now explained at the bottom of my post.4) For an analog meter, just replace R1 with 10k Ohm and place an analog meter (1mA f.s.) between V+ and Drain of FT1. Remove R3-R7, TR1, TR2, LED.Ciao.Ale",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "2664651",
"author": "Christian",
"timestamp": "2015-07-31T12:39:42",
"content": "Hello Alessandro,The site “5volt.eu” is no more accessible. Do you know where your article about the “high voltage electric field detector” could be accessible?Thanks, Christian.",
"parent_id": "402184",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "402186",
"author": "Alessandro",
"timestamp": "2011-06-06T08:56:30",
"content": "Almost forgot: if you are connecting the input to a high pole to detect static in the air, you definitely need protective diodes like Alan Yates (above) suggested (at the gate, after R1), otherwise your JFET will not last long!Again, ciaoAlessandro",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "735122",
"author": "JourneymanWizard",
"timestamp": "2012-08-14T18:36:42",
"content": "Original post dead link.Thoughts on HaD adding a “graveyard” for old posts where the post reference is 404’d?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "912811",
"author": "H3ll0_w0rld",
"timestamp": "2013-01-03T15:54:55",
"content": "I second the graveyard idea. Maybe you can add the old junkbox section of the site that noone ever used to it.",
"parent_id": "735122",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "1009769",
"author": "RHytonen",
"timestamp": "2013-05-29T16:04:08",
"content": "Useless. Initial link is dead. AND? Spoofed “Flash Update” !",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "1037437",
"author": "Joe",
"timestamp": "2013-08-08T13:47:58",
"content": "Does anyone have the schematic for building this with a parts list?? Building for a emf ghost project.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "2586437",
"author": "ai_kenzo",
"timestamp": "2015-05-30T13:57:29",
"content": "can you share the schematic circuit for this project…currently i’m working on emf ghost detector …please",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "2919373",
"author": "sebastian",
"timestamp": "2016-02-15T10:34:20",
"content": "seems the schematic is here:https://upverter.com/Vick77/0000000000006701/High-Voltage-Electric-Field-Detector/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "2990476",
"author": "Laban Gathu",
"timestamp": "2016-04-15T05:53:37",
"content": "i totally like it .Im also presenting a projeat like that one just give me the different typd of transistors like JFET & mosfet",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4377731",
"author": "H",
"timestamp": "2018-02-25T13:13:44",
"content": "Link is available in the web archive:https://web.archive.org/web/20110605202731/http://www.5volt.eu/archives/207",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,180.624941
|
||
https://hackaday.com/2011/06/03/dino-celebrates-the-131st-anniversary-of-the-photophone/
|
[Dino] Celebrates The 131st Anniversary Of The Photophone
|
Mike Nathan
|
[
"classic hacks"
] |
[
"amplifier",
"fiber optics",
"hack a week",
"photophone"
] |
[Dino Segovis] wrote in to share yet another installment of his Hack a Week series,
though this one is quite timely
.
It was 131 years ago today that [Alexander Graham Bell] unveiled the Photophone to the world. A precursor to fiber optic technology, [Bell’s] incredibly important invention can be easily replicated in your garage, as [Dino] shows us.
The original Photophone was constructed using a megaphone and crystalline selenium cells at the focal point of the receiver, however this version can be made with easy to obtain parts. [Dino] rigged his laptop up to a speaker on which he mounted a mirror, before setting it out in the sun. The vibrations of the mirror modulate the sunlight, reflecting it onto a solar cell positioned at the end of a long, black PVC tube. The solar cell’s leads are fed into an amplifier followed by a speaker, which broadcasts the audio.
The demonstration goes off without a hitch, and while some might be underwhelmed by the technolgy, imagine how incredible it would have looked 131 years ago!
| 24
| 24
|
[
{
"comment_id": "401481",
"author": "jamieriddles",
"timestamp": "2011-06-03T19:45:01",
"content": "Who knew solar cells could respond that fast…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401486",
"author": "zool",
"timestamp": "2011-06-03T19:59:00",
"content": "pretty cool",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401495",
"author": "Brad",
"timestamp": "2011-06-03T20:27:17",
"content": "What an outstanding hack. Can’t wait to do this with my kids.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401496",
"author": "addidis",
"timestamp": "2011-06-03T20:32:12",
"content": "The seriously amazing part is this is from 130 years ago…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401500",
"author": "Charlie",
"timestamp": "2011-06-03T20:46:54",
"content": "Underwhelmed?! It still never ceases to amaze me just how amazing some of this stuff is. We live in the future.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401503",
"author": "Christopher Mitchell",
"timestamp": "2011-06-03T20:58:26",
"content": "I remember first learning about this technique from the outstanding Forrest Mims guides a good 15 or more years ago. Very nice.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401509",
"author": "Ugly American",
"timestamp": "2011-06-03T21:27:23",
"content": "Bell tried to get glass fiber put up instead of wires but people thought the old man had snapped.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401519",
"author": "gmcurrie",
"timestamp": "2011-06-03T22:34:36",
"content": "Nice.What always gets me is the ‘nominative determinism’ of Alexeander Graham Bell:http://en.wikipedia.org/wiki/Nominative_determinism",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401532",
"author": "pff",
"timestamp": "2011-06-03T23:12:50",
"content": "He didn’t invent the BellI know lots of people with the surname Bell and none of them invented anything Bell relatedMaybe its just a coincidence?yep thought so get over it",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401537",
"author": "gmcurrie",
"timestamp": "2011-06-03T23:34:22",
"content": "@pff – “I know lots of lots of people with the surname Bell and none of them invented anything Bell related”…Are you wearing a lab-coat and occasionally consulting notes on a clipboard whilst speaking in a flat Germanic monotone?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401543",
"author": "twopartepoxy",
"timestamp": "2011-06-04T00:02:16",
"content": "Graham Bell was way way way way way ahead of his time, I wonder what he would be inventing if he was alive today?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401547",
"author": "pff",
"timestamp": "2011-06-04T00:17:38",
"content": "I don’t think i understand your commentwas it a lampoon?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401548",
"author": "david",
"timestamp": "2011-06-04T00:18:34",
"content": "Skype for Android (but with video)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401553",
"author": "gmcurrie",
"timestamp": "2011-06-04T00:46:40",
"content": "Well, you diss me, I kick back! – Simples : )(My riposte was an allusion to the film cliche of the Logic-Driven Nazi Scientist who knows everything except humanity, kindness & humour – Yep – a bit extreme – din really mean it at all – jus kidding – all the best to you now!)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401595",
"author": "Morbious Stone",
"timestamp": "2011-06-04T06:44:00",
"content": "Dude using this principal and a laser can i use it for beaming internet?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401621",
"author": "anti-fanboi",
"timestamp": "2011-06-04T09:14:02",
"content": "Champion effort!Cheers.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401661",
"author": "kabukicho2001 said,",
"timestamp": "2011-06-04T15:04:03",
"content": "ir-diodes can do the same thing",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401662",
"author": "Hitek146",
"timestamp": "2011-06-04T15:07:03",
"content": "^@Morbious Stone:http://www.freespaceoptics.org/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401767",
"author": "Morbious Stone",
"timestamp": "2011-06-04T21:10:45",
"content": "Hey thanks Hitek146 so awesome!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401769",
"author": "Whatnot",
"timestamp": "2011-06-04T21:22:52",
"content": "For a more direct read:http://www.google.com/search?tbm=pts&tbo=1&hl=en&q=Photophone+bell&btnG=Search+Patents= Google patent search for ‘photophone’ and ‘bell’(I find it more reliable and informative to actually see a patent rather than hear someone who heard someone tell about it.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401786",
"author": "Dino",
"timestamp": "2011-06-04T22:30:45",
"content": "A search results page is more direct? :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401929",
"author": "Whatnot",
"timestamp": "2011-06-05T11:33:33",
"content": "@Dino Yes, it shows relevant patent but there are a bunch of those and with various dates and on various aspects of the concept, so a single link to a single patent would not do.And besides, it’s google that provides the patent reading interface so it’s google anyway if I did a direct link to a specific one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401998",
"author": "Tech B.",
"timestamp": "2011-06-05T17:06:59",
"content": "“He didn’t invent the BellI know lots of people with the surname Bell and none of them invented anything Bell relatedMaybe its just a coincidence?yep thought so get over it”Last names usually indicate the family profession. His family most likely at some point made bells for a living, not that they invented them.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402304",
"author": "Munch",
"timestamp": "2011-06-06T16:56:40",
"content": "Folks, I hate to break it to you, but LASERS DO NOT WORK WELL for open-air optical communications. The atmosphere suffers badly from centimeter-sized convection currents which decoheres the light, leading to a crap-ton of fading and poor quality communications.High-powered LEDs work much, much, much, much, MUCH, MUCH, MUCH better.Seehttp://www.modulatedlight.org/optical_comms/optical_index.html",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,180.559291
|
||
https://hackaday.com/2011/06/03/onshoulderstv-knows-how-to-use-openscad/
|
OnshouldersTV Knows How To Use OpenSCAD
|
Gerrit Coetzee
|
[
"Misc Hacks"
] |
[
"3d printing",
"galivan",
"mathcast",
"onshoulders",
"openscad",
"reprap",
"steinman",
"thingiverse"
] |
Recently there’s been a increase in the popularity of OpenSCAD as the tool of choice in the 3d printing community. [Gavilan Steinman] is putting out a series of
webTV shorts
on the use of
OpenSCAD
. While it lacks a lot of the features of big CAD suits (such as the ability to generate drawings of your parts), the
community
has
proven
it’s effectiveness as a
design tool
. There are only two episodes out so far but they cover OpenSCAD, mathcast, 3d printing, and a
really neat robot design.
Watch them below.
[youtube=http://www.youtube.com/watch?v=LmKnvEcPTk8&w=470]
[youtube=http://www.youtube.com/watch?v=qaqrHuw4qY&w=470]
| 7
| 7
|
[
{
"comment_id": "401446",
"author": "K!P",
"timestamp": "2011-06-03T17:51:03",
"content": "ok, im not much of a programmer, but i would have made that servo a heck a way faster using a mouse driven modeling software. (like solid works or something) Also less mind tricks.. (for me)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401450",
"author": "Drake",
"timestamp": "2011-06-03T18:01:17",
"content": "strange that the 1st episode was Feb 27. Second was Mar 6 … now its June 3… Almost looks to me like he lost interest in the series …Anywho interesting stuff. I will be downloading openSCAD tonight!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401451",
"author": "Regulus",
"timestamp": "2011-06-03T18:02:32",
"content": "The big draw to OpenSCAD is that it makes changing a few parameters ad getting a new version very easy; a good thing if you want to share your design with folks that might not have exactly the same parts you do.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401480",
"author": "Otacon2k",
"timestamp": "2011-06-03T19:44:53",
"content": "@Regulus: Most “mouse-based” CAD-packages out there can use variables as well, you don’t always have to create fixed models.@topic: Nice, I like the more “programming” like aspect of OpenSCAD, gonna take a look for sure.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401569",
"author": "TP",
"timestamp": "2011-06-04T02:20:01",
"content": "OpenSCAD looks too much like Matlab (which I love the features but hate the UI). Why not try the free Creo Elements/Direct Personal Edition. It is WAY easier to use once you get the hang of it.http://www.ptc.com/offers/tryout/pe3.htm.Works similar to Google Sketchup, but has better dimensioning and you can create drawings.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401573",
"author": "Aaron",
"timestamp": "2011-06-04T02:31:01",
"content": "OpenSCAD is the ultimate parametric design tool. The dimensions can be changed on the fly. I think this is the benefits over Solidworks/Creo Element/Autodesk 123D, though not as intuitive.I’ve been using Soldworks for many years, but it is tooooo expensive that I cannot afford installation on my own computer. OpenSCAD and Autodesk 123D are very good alternatives, as they are free.Hope that one day a mouse-driven front end can be developed upon OpenSCAD.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402256",
"author": "David Rysdam",
"timestamp": "2011-06-06T15:01:32",
"content": "I like to code more than I like to mouse too…which is why I don’t get why OpenSCAD has such a terrible editor. Let me embed emacs in there!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,180.717897
|
||
https://hackaday.com/2011/06/03/warm-tube-clock-take-2/
|
Warm Tube Clock, Take 2
|
Mike Nathan
|
[
"clock hacks"
] |
[
"atmega328",
"DS3231",
"led",
"nixie",
"rgb",
"rtc",
"tlc59401",
"tube"
] |
[Mure] wrote in to let us know he has put the finishing touches on
the second iteration of his Warm Tube Nixie clock
. We featured his original creation
here last year
, and while many things remain the same, he has still found a few things that he was able to improve on.
The first notable feature is the new real time clock. Instead of using a discrete crystal to keep time and a temperature sensor for compensation, he has opted to use a DS3231 RTC IC. It is far more accurate than the crystal, and it features a built-in temperature sensor as well. The alarm functionality has been simplified too, moving the controls into firmware rather than having to use a sliding switch to do so.
With the mainboard redesign, it would have been easy to leave behind the nixie “shields” he created for his first clock, but with a focus on interoperability, he chose to make this clock fully compatible with version one’s shields and vice versa.
While the changes aren’t groundbreaking, it’s nice to see a project like this undergo continued refinements. If you want to build a clone of this clock, [Mure] has made sure that all of the schematics and source code are available on his site.
Continue reading to see a brief video demo of the clock in action.
[youtube=http://www.youtube.com/watch?v=G4ehGTG4MEM&w=470]
| 23
| 22
|
[
{
"comment_id": "401416",
"author": "addidis",
"timestamp": "2011-06-03T16:07:13",
"content": "Ok I have a stupid question. I dont futz much with high voltage things. . .Can some one explain the blue hue at the bottom of the nixie tubes. Its perplexing me.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401417",
"author": "addidis",
"timestamp": "2011-06-03T16:07:57",
"content": "Just led below it or what?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401419",
"author": "zulu",
"timestamp": "2011-06-03T16:10:00",
"content": "LEDS!?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401422",
"author": "vmspionage",
"timestamp": "2011-06-03T16:16:34",
"content": "I’m 100% sure it’s a blue LED. IMO the project would be better off without them, but whatever, it’s cool nevertheless.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401426",
"author": "vmspionage",
"timestamp": "2011-06-03T16:19:48",
"content": "His site explains that they are indeed SMD RGB LEDs",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401428",
"author": "Jake H",
"timestamp": "2011-06-03T16:25:28",
"content": "WHY do people keep adding LEDs to nixie tubes?! I don’t understand this. They already light up, and what makes them cool is that they are vintagey and warm in their glow. So why add cold, modern, dare I say boring LEDs? It’s a fine build and all, I just don’t understand why people do this.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "534602",
"author": "ed",
"timestamp": "2011-12-13T21:19:06",
"content": "if the guy likes to add blue leds to nixie tubes, let him. It ishísproject. If you build it, you can leave them out or add yellow ones. or lasers, or whatever",
"parent_id": "401428",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "401430",
"author": "marki",
"timestamp": "2011-06-03T16:32:18",
"content": "“7. configurable color of bottom RGB LEDs that blink at 1/2 Hz rate (or even turned off)”so turn them off if you hate them :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401432",
"author": "addidis",
"timestamp": "2011-06-03T16:36:19",
"content": "Im with ya jake. I didnt even consider they were leds at first because of that point.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401434",
"author": "elektrophreak",
"timestamp": "2011-06-03T16:41:17",
"content": "the leds can be turned off entirely in the MENU, it depends on your preference :)glad you like it btw…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401437",
"author": "fartface",
"timestamp": "2011-06-03T16:45:28",
"content": "It’s to get in on the steampunky craze…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401440",
"author": "Trav",
"timestamp": "2011-06-03T16:47:54",
"content": "I would leave the LED’s for indicators to show what is on the display, alarm, date, mode, etc. but not for general seconds. I think the neon colons do that just fine.BTW what is the life expectancy of Nixie tubes, and are they dimmable to a soft glow for a bedroom clock? My dad had a blue vacuum tube clock, and even on dim it was blinding to see in the dark.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401448",
"author": "K!P",
"timestamp": "2011-06-03T17:53:26",
"content": "my nixie clock lit up in blueish hue when i first powerd it up, a turns out they dont like multiple signs on at once :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401455",
"author": "moldboy",
"timestamp": "2011-06-03T18:13:02",
"content": "I’m with Jake. LEDs ruin the effect, just my two cents.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401461",
"author": "Tomasito",
"timestamp": "2011-06-03T18:38:23",
"content": "I like the two neon lamps for the “:”.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401477",
"author": "am_i_evil",
"timestamp": "2011-06-03T19:38:59",
"content": "I saw the earlier iteration of this on HAD… nice progression.I love HAD, but so many of the questions/comments on this post could have been made redundant… had the question poster actually read the very short article. :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401482",
"author": "Hirudinea",
"timestamp": "2011-06-03T19:48:42",
"content": "Ah, why did they ever stop making nixie tubes? Oh yea right, LEDs.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401490",
"author": "smithincanton",
"timestamp": "2011-06-03T20:13:11",
"content": "Anyone know if there is a place where I can buy a kit or at least the PCB? I have a laser printer so I could make the boards but they are dual sided boards I think and that might not be the best for “My first etching” or even capable of being etched at home.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401551",
"author": "CRJEEA",
"timestamp": "2011-06-04T00:41:51",
"content": "@smithincanton, personally what I used to do(ok still do sone times) for double sided pcb’s just make both sides as single sided pcb’s and stick them together(I actualy use the through hole components to do that some times if it’s practical) ok so the board is a few millimetres thicker thank normal but if space isn’t too big an issue it’s a good work around. (as long as you get them the correct scales and line them up right)Looks like I’m off to the carboot sale Sunday if a see some tubes a may well give this a go my self. One can never have enough clocks… (my house may become BTTF-esc one day haha)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "403001",
"author": "Spyrus",
"timestamp": "2011-06-08T13:49:43",
"content": "Where would one go about finding some of these Nixie tubes if they wanted to try and make a clock? I love the look and glow these give off and would love to put one on my desk at work.Thanks in advance",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "522557",
"author": "Rob R.",
"timestamp": "2011-11-30T06:22:20",
"content": "Hey Spyrus I found a couple on ebay just by googling it, andhttp://www.allspectrum.com/has both the tubes and kits, as well as controllers if you need themHope this helps!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "2209511",
"author": "No Hack",
"timestamp": "2014-12-04T10:01:00",
"content": "I found where PCBs are available for sale for this project:http://www.elecrow.com/warm-tube-clock-v2-pcb-board-p-1154.htmlWoho!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "2482525",
"author": "Peter",
"timestamp": "2015-03-17T15:56:44",
"content": "Hi to allLet me answer if exist any PCB components identification, for this interested project?I already order the PCB, and waiting for some components.Best Regards",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,180.445796
|
||
https://hackaday.com/2011/06/03/portable-sid-plays-chiptunes/
|
Portable SID Plays Chiptunes
|
Brian Benchoff
|
[
"classic hacks",
"Portable Audio Hacks"
] |
[
"chiptune",
"CUI32",
"pic32",
"sid"
] |
[Markus] on the DangerousPrototypes forum came up with a great little
SID player
.
The
SID
was (is?) the awesome sound generation chip inside the Commodore 64, and along with Game Boys and NESs laid the foundation for the chiptune scene. We’re happy to finally see a small SID player that doesn’t resort to SID emulation or a relatively huge
MIDIbox
.
The SID player itself is a shield on a CUI32 PIC dev board. The PIC32 emulates the 6510 and 6526 CPU and CIA chips found in the Commodore 64. A small USB memory stick stores the
High Voltage SID Collection
and the file system is navigated with an OLED screen. [Markus] says that the player draws 370 mA, so he runs it off a small wall wart. Still, we’re wondering if it’s possible to run this off of an SD card with a
SwinSID
so power draw can be reduced and a fully portable SID player can be realized.
We’ve got a touch of nostalgia for chiptune and demoscene music right now, so we’re going to listen to some
[Nelly Furtado]
[Janne Suni] right now, but you can check out the video demo [Markus] posted after the break.
[youtube=http://www.youtube.com/watch?v=gw-TQaskkQ8&w=470]
| 19
| 19
|
[
{
"comment_id": "401395",
"author": "dext3r",
"timestamp": "2011-06-03T15:26:06",
"content": "i love this player!check out my favorite site for old tunes:http://www.kohina.com/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401403",
"author": "DanJ",
"timestamp": "2011-06-03T15:49:39",
"content": "Neat project. I notice it’s another project that lacks bypass capacitors on the linear regulators. Which begs a question for you other EEs out there. Has anyone ever seen a linear regulator or LDO with stability problems because they didn’t have the correct bypass/compensation capacitors or too-large of ground loops?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401410",
"author": "mackhine",
"timestamp": "2011-06-03T16:02:06",
"content": "This site has the sids from the hvsc converted to mp3 from actual c64 (not emulation):http://www.6581-8580.com/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401421",
"author": "AppleIIGSFanBoi",
"timestamp": "2011-06-03T16:15:19",
"content": "Somebody needs to do the same with the ensonic chip from the AppleIIGS.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401429",
"author": "matt",
"timestamp": "2011-06-03T16:28:23",
"content": "This is so badass. It’s hard to tell from the video, but yes, there is an actual SID chip in there.I got chills when Last Ninja 2 Central Park came on… he should have let the song play out!Too bad it’s not battery powered. Current draw and the steady 9V supply requirement for the SID probably make that tricky.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401433",
"author": "matt",
"timestamp": "2011-06-03T16:37:22",
"content": "Also, does anyone happen to know who’s got the California license plate “MOS 6581”? Used to see that car parked in my old apartment complex, always wanted to track him down and give him a high five.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401438",
"author": "Bill",
"timestamp": "2011-06-03T16:46:10",
"content": "Yes, I’ve seen an LM340 regulator oscillate due to lack of a capacitor. It wasn’t your typical case, since it was driving 20 feet of wire, but it managed to completely wipe out TV reception on channel 5 with no other negative consequences. One capacitor between the output and ground solved the problem.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401484",
"author": "muriani",
"timestamp": "2011-06-03T19:56:10",
"content": "This is pretty badass. I’d really like to see this done with the SNES APU instead of the SID… portable SPC jukebox!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401497",
"author": "Brett W. (FightCube.com)",
"timestamp": "2011-06-03T20:36:46",
"content": "@DanJ, yes LDO’s are typically very sensitive to minimum capacitance requirements, and will oscillate out of regulation when a decent load is placed on them with not enough output capacitance. Also, at very cold temperatures the output chip caps tend to decrease in capacitance, so if you add the bare minimum you might have issues. I always double the minimum value to be on the safe side.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401508",
"author": "Ugly American",
"timestamp": "2011-06-03T21:25:55",
"content": "The SID made the long 1541 floppy drive load times worth it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401517",
"author": "Olivier",
"timestamp": "2011-06-03T22:10:23",
"content": "Great !“relatively huge MIDIbox.” it’s not that huge, it depends on what you build. A stereo Midibox SID without any controls isn’t big.But a Midibox octo SID with full controls takes of course some place.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401549",
"author": "svofski",
"timestamp": "2011-06-04T00:30:44",
"content": "I’m full of envy.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401649",
"author": "Andy7",
"timestamp": "2011-06-04T13:07:54",
"content": "That ROCKS!!!As a veteran games programmer I really ought to do the same with the old “AY” chip and re-live the 80’s!You can’t beat retro video game reconstructions.I’ve started on a rebuild of my Defender arcade machine starting with the SOUND BOARD, grab a look here.http://www.youtube.com/watch?v=-4NtdjF1EvI",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401695",
"author": "Dan Afonso",
"timestamp": "2011-06-04T16:40:53",
"content": "@DanJ, Ya, I’ve seen plenty of prototypes where the layout guy didn’t put the bypass caps in the right place or the ones where we forgot to put a 10uF on the board for local filtering from the wall wart. Every time you draw a buunch of power (turn on a LED) it reboots and you get that “WTF” look on your face.If your system’s demand isn’t spiky or your chips have tolerance for low voltage, you can get away with it, but at higher clock speeds the probability becomes very high. Random resets are a pain to debug.In this case, I’m guessing that the power demand is pretty constant so the filtering done at the wall wart is just about enough to make it work.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401736",
"author": "Markus Gritsch",
"timestamp": "2011-06-04T19:26:22",
"content": "Hi, I posted a follow-up video demonstrating digi-support. This allows playback of tunes containing sampled sounds. Two things to keep in mind:* The emulator code (TinySID) can only playback tunes in PSID format (in which the majority of the files in the HVSC are). However, with update #50 the digi-tunes in the HVSC have been replaced by ones in the newer RSID format. The old PSID digi-tunes are still avaliable separately here:http://www.hvsc.de/download/files/archives/C64MUSIC_PlaySID.rarSo use these for your digi pleasure :)* The SID 8580R5 needs a digi-boost hack to play the digis sufficiently loud. Add a 330 k resistor from EXT IN to GND, preferrably using a switch.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401737",
"author": "Markus Gritsch",
"timestamp": "2011-06-04T19:28:03",
"content": "Here’s the URL of the videohttp://www.youtube.com/watch?v=1nCUBvLy_ps",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405748",
"author": "Dustin moore",
"timestamp": "2011-06-14T19:16:11",
"content": "If you love chip tunes then you should check outhttp://Chiptunearchive.comit has over 250,000 chiptunes xD !!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "410654",
"author": "Age of Audio",
"timestamp": "2011-06-27T14:44:14",
"content": "I love chiptunes. If you want to read more, I have a small article here:http://www.ageofaudio.com/en/micromusic/chiptunes-making/how to do chiptunes with software and tips for beginners too.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "422098",
"author": "exit151",
"timestamp": "2011-07-24T07:16:57",
"content": "I hope someone is producing SID chips and that the masses are not eBaying old C64’s from potential good homes just to rip a chip out and discard them!!**JUST SAY NO TO SENSELESS C64 KILLING**",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,180.87692
|
||
https://hackaday.com/2011/06/03/kinect-driven-cart-makes-shopping-a-snap/
|
Kinect-driven Cart Makes Shopping A Snap
|
Mike Nathan
|
[
"Kinect hacks",
"Robots Hacks"
] |
[
"assistive technology",
"cart",
"Kinect",
"motorized",
"robot"
] |
[Luis de Matos] is working on
a neat Kinect project called Wi-GO
that aims, as many do, to enhance the lives of individuals with disabilities. While the Wi-GO project is geared towards disabled persons, it can be quite helpful to the elderly and pregnant women as well.
Wi-GO is a motorized shopping cart with a Kinect sensor mounted on the back. The sensor interfaces with a laptop and functions much as you would as you would expect, scanning the area in front of the cart for objects and people. Once it identifies the individual it is meant to help, the cart diligently follows behind as the person goes about their typical shopping routine. The robot keeps a safe distance to avoid collisions, but remains within reach so that it can be used to carry goods.
If you take a look a the video below, you can see Wi-GO in action. It starts off by showing how difficult it would be for an individual in a wheel chair to use a shopping cart alone, and follows up by showing how much easier things are with Wi-GO in tow.
While the project is only in prototype form at the moment, we suspect that it will only be a matter of time until you see devices like Wi-GO in your local supermarket.
[vimeo http://vimeo.com/24542706 w=470]
| 21
| 20
|
[
{
"comment_id": "401385",
"author": "salomon",
"timestamp": "2011-06-03T14:44:35",
"content": "So, finally Microsoft did something good, inventing the kinect",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1003230",
"author": "ThatOneDude",
"timestamp": "2013-05-11T17:00:40",
"content": "Hahaha Implying you’ve never used or relied on their operating system.",
"parent_id": "401385",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "401386",
"author": "Amos",
"timestamp": "2011-06-03T14:53:13",
"content": "I would have called it “Pearwood” (cf. Terry Pratchett’s “The Color of Magic”)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401388",
"author": "Matthieu",
"timestamp": "2011-06-03T14:54:56",
"content": "Isn’t that possible to add some sort of adaptated cart behind the wheelchair ? (and drag it around)I find the project awesome and really practical, but that’s what I thought at first when I saw the man pushing the cart.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401390",
"author": "IceBrain",
"timestamp": "2011-06-03T14:58:10",
"content": "Oh, cool, a Portuguese project.The problem I see is the path between the cash register and the car, and to transport the device in the car itself.It would have to feature bigger wheels for the more rugged floor and probably be foldable.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401392",
"author": "JW",
"timestamp": "2011-06-03T15:10:33",
"content": "Nice prototype but in the UK we have shopping carts that attach to the front wheelchairs so your arms are free. which kind of means you don’t need an expensive piece of kit",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401397",
"author": "Andrei Cociuba",
"timestamp": "2011-06-03T15:38:35",
"content": "i hope you do realize that it is much easier to make a shopping cart follow a wheelchair by attaching them together with a string, right?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401399",
"author": "lwatcdr",
"timestamp": "2011-06-03T15:40:32",
"content": "Very cool but not just for the disabled and pregnant women but anybody shopping with kids. How if you could combine it with RIFD and NFC so check out would be a swipe you would be all set.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401404",
"author": "Drake",
"timestamp": "2011-06-03T15:49:40",
"content": "@andreiNow pull that cart up a ramp or hill …Or around a tight corner in a store …Makes since now …",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401407",
"author": "Andrei Cociuba",
"timestamp": "2011-06-03T15:59:39",
"content": "@drake. i think it can be done with the string, and i also think it will be significantly faster and more energy efficient.not that i underestimate the potential utility of the design, i often considered building something similar myself to navigate between party attenders and distribute drinks.but in order to make a single shopping cart follow a single person in a wheelchair, at that distance, at a usable speed, you need pretty complex hardware and software algorithms to detect and isolate the specific person from all other individuals randomly navigating between user and cart, and avoid collisions, plus an infrastructure of chargers, batteries, etc…forgive me, but at this specific speed, in this specific scenario, i still think a string is the better option.i am not disabled, but i would be willing to try it on myself, if i find anyone willing to lend a wheelchair.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401413",
"author": "Josh",
"timestamp": "2011-06-03T16:06:12",
"content": "I doubt it would be much easier for someone in a wheelchair to drag something like a trailer around, especially in tight quarters like a shopping center. I may be wrong on that.This would be great for supermarkets to have one or two on hand. Maybe have a handheld remote to help it with more complex maneuvering, or reverse?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401423",
"author": "IceBrain",
"timestamp": "2011-06-03T16:17:27",
"content": "A string? Right. Only if you have someone to pick the stuff that the cart will keep hitting in each corner. Like those (glass?) jars in 00:34.And with the data that the Kinect provides I don’t think it’d be difficult at all to distinguish the person.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401425",
"author": "IceBrain",
"timestamp": "2011-06-03T16:19:12",
"content": "@Josh: I doubt supermarkets will provide them. They need to carry stuff to the car to be really useful, and then there’s simply too much risk of theft.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401444",
"author": "tjb",
"timestamp": "2011-06-03T17:02:36",
"content": "As some one who has been around a few people in wheel chairs I can say that a “string” will not work. Too hard to cut the corners or maneuver around the mid isle displays. I thing carts like this will show up in the same place and use as the scooters some shopping places have now.Given that this is a proof of concept I would not worry about how big the wheels are or max speed. I also thing we will be seeing units like this in the near future in shopping centers. Probably some sort of auto mode with manual over ride. The robo cart follows the person with the remote.I would expect the remote to have settings for following distance plus a joy stick or directional buttons.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401479",
"author": "Hirudinea",
"timestamp": "2011-06-03T19:43:06",
"content": "I wouldn’t mind one of these following me around while shoping, I’m perfectly able-bodied, just lazy, My question is if you go around a corner or somebody walks between you and “rover” how does it reaquire you?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401510",
"author": "monster",
"timestamp": "2011-06-03T21:45:04",
"content": "I used to work at a grocery store, and every customer but one would simply use a hand basket on their lap. what nobody has mentioned yet is how is this person going to get their full cart of groceries inside once they get home. people in wheelchairs are usually fiercely independent, I doubt they’d generally ask for help from neighbors.the one customer in a wheelchair who used a cart would hold the cart with both hands and weave back and forth like a snake. there was a scooter that moved with the same idea at my elementary school way back in the day. he could get going at a pretty good clip.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401530",
"author": "pff",
"timestamp": "2011-06-03T23:07:26",
"content": "anyone saying string is dumb; if you move and then stop the only thing that stops the cart is it hitting you.although to be fair; this invention is dumb.most wheelchair people probably dont want another reason to be stared at in addition to their gruesome abnormalities.If they cant use a shopping cart or a basket like a normal person then why not just use a home delivery service? Normal people use it too so theres no lame excuse about wanting to fit in and not be helpedwhich is a poor excuse about being dependant.whats the difference between a person helping you shop and a chair with wheels helping you walk?Unless they made the chair then they are reliant on someone to build the chair.If disableds stopped worrying so much about what normal people thought then maybe normal people would treat them like normal people",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401719",
"author": "Whatnot",
"timestamp": "2011-06-04T17:42:04",
"content": "I bet the video when he gets to to the cash-register is hilarious as the carts backs off when he tries to get the stuff out to be scanned.And this might be nice for him, but imagine a few of those and then how that is for people that are not handicapped, to have a wheelchair with a cart behind it at a distance takes up a lot of space, and I’m not sure you can walk inbetween without the thing getting confused. (Not that the non-handicapped don’t seem to deliberately take the space of 6 people and stand still in intersections on purpose though.)@pff “their gruesome abnormalities.”, wtf? I see no gruesome abnormalities, I see a guy in a wheelchair, are you on LSD?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401971",
"author": "Rex",
"timestamp": "2011-06-05T14:49:31",
"content": "First of all it’s great to see a Portuguese project here :D Força pessoal!!! :PSecondly, this is a proof of concept, not even a prototype, so:– (@pff) the cosmetic is not the best, it could be made more apealing and even desireable to “normal” people;– as already mentioned, it is better than a string. it’s far more complicated and costy but also allows much more functionalities to be added;– it still has some issues to solve, like when the person tries to put something on the basket it has to come closer, if the person reverses the wheelchair or does a 180 degree rotation, or the already mentioned issue of taking the stuff out to the cash-register;Despite all of this, i think that the concern for disabled people is the most important part of this project.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402019",
"author": "MrX",
"timestamp": "2011-06-05T18:06:16",
"content": "@salomon The kinect was not invented by Microsoft. The technology was invented by PrimeSense and Microsoft bought the right to use the technology. Thats it. What Microsoft did was the software that runs on the XBOX and which is NOT used in all the kinect hacks. The kinect outputs pretty much raw information which people use for their own purpose.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402745",
"author": "Mike",
"timestamp": "2011-06-07T20:00:12",
"content": "Towing a standard shopping cart a foot or two behind would be more practical.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,180.937456
|
||
https://hackaday.com/2011/06/03/precision-frequency-measurement-library-for-8-bit-microcontrollers/
|
Precision Frequency Measurement Library For 8-bit Microcontrollers
|
Mike Szczys
|
[
"Arduino Hacks",
"Microcontrollers"
] |
[
"arduino",
"crystal oscillator",
"frequency counter",
"Teensy"
] |
[Paul] has been working on porting over Arduino libraries for use with the Teensy microcontroller platform. This tends to be pretty simple since they both use the same Atmel chip architecture. But once in a while he finds the Arduino libraries are not what they’re cracked up to be. When looking to port over a frequency measurement library he ended up
writing his own that works better and is much more portable
.
He had two big beefs with
the Arduino Frequency Counter Library
. The first is that it required the compensation factor the be calibrated using an accurate frequency counter. That’s a chick-and-egg problem since many people who build a frequency counter with an Arduino are doing so because they don’t already have a standalone tool. The second problem is that the Arduino library was hardcoded for ATmega168 or ATmega328 chips.
This new library fixes both issues with just one trade-off. Your hardware setup must be using a crystal oscillator. You can see above in the image above that the frequency measurement is quite accurate with this method. The package also uses a thin abstraction layer which will make it easy to port to any 8-bit microcontroller which is programmed in C.
| 7
| 7
|
[
{
"comment_id": "401414",
"author": "Scott",
"timestamp": "2011-06-03T16:06:56",
"content": "It says this can measure up to 5mhz. Can it measure higher frequencies if I use a faster clock source for the MCU?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401427",
"author": "Paul",
"timestamp": "2011-06-03T16:23:50",
"content": "@Scott – yes, sort of. The AVR timer appears to require your input to be high for at least one CPU clock and low for at least one, so if your waveform is exactly 50% duty you could directly measure up to about half the AVR’s clock speed. So a 20 MHz crystal ought to get you about 10 MHz. The timer abstraction file doesn’t have a #define for 20 MHz, so you’d need to add that.I wrote 5 MHz to be a bit conservative. That transistor input amp doesn’t preserve the duty cycle nicely, so in my testing it crapped out not far above 5 MHz.Of course, you can indirectly measure much higher frequencies if you use flip-flops or counters to divide the input down.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401441",
"author": "therian",
"timestamp": "2011-06-03T16:48:13",
"content": "Pic have 4 cycles to do and it dosnt stop it to count above 60mhz",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401491",
"author": "Andrew",
"timestamp": "2011-06-03T20:14:13",
"content": "The crystal oscillators on Arduinos are (in my experience) commonly off by a few hundred parts per million at room temperature, and with thermal coefficients of more than 10 ppm per degree C, so take any claims of accuracy with the requisite number of grains of salt.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401531",
"author": "Jack",
"timestamp": "2011-06-03T23:12:25",
"content": "@Andrew: Well, perhaps the title is a bit closer to the truth than the summary. The library may still be precise while not perfectly accurate ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401538",
"author": "Paul",
"timestamp": "2011-06-03T23:35:48",
"content": "@Andrew – I wouldn’t be surprised by that on some boards.Atmel doesn’t publish a pin capacitance spec for XTAl1 and XTAL2, so the only way really design a good board is to guess about 5 pF and then try tuning by soldering different capacitors while checking with an accurate frequency counter.I did that on both Teensy boards using the OSCOUT fuse, and that BK Precision 1823A you see in the photo, soldering in 1 pF steps at a time, until I found between 10 to 11 pF, closer on the 10 side. A few times I’ve considered renting a far more accurate, NIST traceable counter, but since the 1823A matches pretty closely to that Protek B8010FD, I’ve been willing to call that “good enough”.Teensy also uses a higher quality crystal with ground connections to its case, and I put a dedicated (no other ground currents) ground plane under the crystals.Sadly, I suspect on many “duino” boards they just use 22 or 33 pF and never accurately measure or tune for their chip package and board layout. That’s sad, because just using the right capacitor makes the crystal as good as it can be. Unnecessary for most people, but then again, how hard is it to just use the best board layout capacitance value?The Uno even uses a ceramic resonator, which is truly sad. I tested on an Uno and it was off in the 4th digit. :-(But I tried to make the code as good as possible.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401613",
"author": "ColinB",
"timestamp": "2011-06-04T08:03:22",
"content": "@Paul: “The Uno even uses a ceramic resonator, which is truly sad. I tested on an Uno and it was off in the 4th digit. :-(”So true! On a $30.00 board can’t they spare another 50 cents for a crystal???",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,180.672419
|
||
https://hackaday.com/2011/05/31/vga-testers-for-the-children/
|
VGA Testers For The Children
|
Kevin Dady
|
[
"hardware"
] |
[
"VGA Tester"
] |
Recently on our
Hack A Day forums
a member asked about getting some VGA testers made in our “Request and Commissions” forum for a charity called the
World Computer Exchange
, who take old office PC’s and freshens them up to be used by children in developing countries for their education.
I sort of wanted to do a no brainier electronics build as I had been working on that Apple II weather display for quite a while at that point. I say no brainier because I decided to use one of the many already designed vga testers out there and all I really had to do was get it to fit in whatever box we ended up with.
I choose the
deogen
because it was already featured on Hack A Day, supports multiple raster patterns and resolutions (640×480 through 1280×1024), is already pretty darn small, and uses an ATTiny 2313 which is good because I am already set up for AVR micro controllers. For a case I choose to use some plastic “Ice Breakers” mint boxes, which due to their oval shape makes it quite a bit smaller than an altoids tin. The challenge is on to shove a PCB, switch, 9V battery, 2 buttons and a vga connector in the cramped space.
Join us after the break for a pile of pictures and some build notes.
First up would be the parts. I got most of the required parts from good ole Digikey. There were a few radio shack push buttons from another project, toggle switches from old dead power supplies and the VGA connectors came from a old multiport keyboard / vga switch (one of those with the giant mechanical rotary knobs). Including the parts I already had on hand the cost of a pair of these testers would run around 20$, though I got off a bit cheaper.
You can find schematics and a parts list on the main
Deogen
page, along with a properly laid out dual sided PCB. I wont be using the PCB as I have less space to work with, and I really do not feel like drilling holes, also the micro, power regulator, and crystal were substituted with fairly easy to handle surface mount packages. All passive components are normal through hole with their leads soldered to pads on the board. Have you seen a surface mount 18pf capacitor? At first I swore Digikey sent me an empty piece of tape!
The D shape PCB blanks were cut out on a band saw and smoothed over with a table top belt sander, and a test fit is made. As you see everything fits snugly inside of the box. At first I thought I was going to draw this PCB and reality kicked in when I remembered I needed to make a pair. Off to windows and
Express PCB
, where I quickly eyeballed the D shape of my PCB and laid out my design with quite a bit of slack over the rounded part.
I tried toner transfer, and I scrubbed the blanks with nylon pads, acetone, steel wool, and more acetone to get those things clean. I went to my parents house to use my dad’s brand new cannon laser printer. I used the fronts and backs of old fedex shipping label paper and how are my results?
Epic fail! I have never been good at making toner transfer boards but these are by far the worst ones ever. Toner didn’t stick and had a problem with smooshing. The iron I used is junk so it liked to scald the paper and screw up the copper surface. If that wasn’t enough, I didn’t measure the base of the switches which were too wide fit in the 2 holes I left in the PCB. After about the third time of this, I said “well its not getting any better” and I pulled out my little hobby knife and sharpie marker to fix any problems.
After etching, any left over problem areas were gouged out by using a super small chisel that came with a set of soldering picks, while under magnification. Both boards got each trace probed with a continuity meter, then all of the traces are coated in liquid flux in preparation for tinning.
Tinning is accomplished by pooling up a blob of solder on one of the large ground planes and you can simply dip into it with your soldering iron and paint over the traces. It looks a mess because the surface is not smooth caused by excess boiling flux, but one you start soldering on it, it flattens out real quick. I also scrubbed the board down with a toothbrush and denatured alcohol, this is vital or the board is coated in a thick gooey sticky flux syrup.
I soldered the components to the board in my layout. Unfortunately, in my layout, the board is mounted by the push button switches. The VGA connector has to be soldered in after both it and the PCB are mounted, so I need to start on the case.
First, the end is cut to fit the VGA connector. A template was made from a video card mounting bracket taped into place and crudely cut out, and cleaned up with a file. The PCB and battery were set in place and a mark for the power switch is made.While we are in there the (corrected) switch mounting holes in the pcb were used as guides to drill holes into the bottom of the mint box.
Back to the power switch. I measured it with my digital calipers and scribed its foot print in the bottom of the box, it was then cut out with a utility knife.
At this point I am ready to mount everything in the box, but I decided it needed some graphics too. Hopping back into windows, (because I cant get my wifi printer / scanner working right in linux) I set the box on my flat bed scanner and imported the image into inkscape to use as a template. I outlined my graphic and opened the resulting svg file into the gimp for paint, and printed it out on some feebee photo paper which is glued to the mint box.
Final construction involves first mounting the VGA connector to the box. Since its on the rounded end of the box the connector’s screw tabs were bent in to help match the contour. Next, the PCB is slid into place and I can now install the 2 push buttons through both the pcb and box. Finally the power switch is snapped into place and is re-enforced with a pretty thick bead of gorilla glue.
Final wiring is pretty simple evn though its in very cramped conditions. I soldered the 9v battery clip’s negative lead to a longer bit of wire and it iss soldered to a ground on the PCB. The positive lead goes though a diode and into the toggle switch, which is connected to the power input of the circuit. One side of both buttons is soldered to ground, and the other side each lead to a different pin of the microcontroller. Finally, the hardest part is hooking up the 6 lines coming from the VGA connector. They are; RGB that need to be soldered to the correct resistor dac, h sync and v sync which go direct to the micro controller, and a ground line (which connects all the grounds via a jumper wire on the vga connector).
Give the glue some time to dry, pop in a battery and snap the lid back on (which is now the bottom) and you are good to go! Both of the minty VGA testers work great and the Deogen setup is very handy when looking for defective LCD’s. Don’t just take my word for it, look at these happy campers!
We blasted through our huge pile of LCD’s thanks to you! they worked so well we are thinking of sending one of them off to one of our over 20 other chapters. Each month we have a group of volunteers who are regulars and some who come occasionally. everyone you see in the group photo there has dedicated a lot of their time to the cause. everyone there was impressed and appreciative of your contribution
| 11
| 11
|
[
{
"comment_id": "400163",
"author": "ian",
"timestamp": "2011-05-31T16:09:58",
"content": "Nice build, great article!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400165",
"author": "Bob",
"timestamp": "2011-05-31T16:16:26",
"content": "Kids today have it easy. When I was a kid, I had to test my VGA by hand. In the snow. And it was uphill, both ways.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400169",
"author": "fartface",
"timestamp": "2011-05-31T16:34:44",
"content": "Awesome! this is one of the best Hacks I have seen here in a long time.Anyone got a DVI version?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400177",
"author": "lwatcdr",
"timestamp": "2011-05-31T16:54:04",
"content": "now that is an Epic Hack for a good cause. Now that is what I call Hackvism.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400362",
"author": "Greg",
"timestamp": "2011-06-01T03:39:19",
"content": "Pretty cool…definitely a good hack. And for a noble purpose, too.I could have used one of these in my computer repair days…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400363",
"author": "blue carbuncle",
"timestamp": "2011-06-01T03:49:00",
"content": "I can see kids playing with this for days on end. Trying and noting extraneous permutations is one of my favorite ways to spend a Thursday. The best part is the ‘hidden’ reverse button! I bet they’ll be clawing at each other to skew the pattern notation results for years to come :) Great project!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400365",
"author": "Stevie",
"timestamp": "2011-06-01T03:58:11",
"content": "Nice. It’s good to see you took the time to help these guys out :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400377",
"author": "D_",
"timestamp": "2011-06-01T05:08:17",
"content": "I’ll bet when Bob was a kid VGA monitors where %100 hollowstate.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400431",
"author": "grovenstien",
"timestamp": "2011-06-01T10:05:23",
"content": "Will this output a composite signal as well?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400565",
"author": "Kevin Dady",
"timestamp": "2011-06-01T17:40:49",
"content": "“Will this output a composite signal as well?”Sorry, no",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400886",
"author": "paganpan",
"timestamp": "2011-06-02T12:48:30",
"content": "Oh god! I didn’t know you were going to be posting my reply verbatim! I didn’t grammarize it enough! and i used the word ‘everyone’ twice. Again, thanks.To be clear, we aren’t shipping the VGA testers to developing countries, we are using them to quickly see if a monitor is ready to be shipped to a school.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,180.771231
|
||
https://hackaday.com/2011/05/31/lcd-replacing-ccfl-with-leds/
|
LCD: Replacing CCFL With LEDs
|
Mike Szczys
|
[
"LED Hacks"
] |
[
"ccfl",
"digital picture frame",
"inverter",
"led backlight"
] |
[Fileark] had the backlight on his digital picture frame go out one day. These are generally Cold Cathode Fluorescent Lamps which require an inverter to source the voltage necessary for proper operation. When they stop working, the inverter is usually to blame. Since that circuit is made up of pretty small surface mount circuitry, he decided to
replace the backlight with LEDs
rather than repair the inverter.
In the video after the break [Fileark] will walk through the entire project. After snooping around inside the picture frame he sizes up a strip of LEDs on a flexible substrate. The metal retaining bracket that hosts the LCD must be altered to fit the new light source and for that, he’s included a hacking montage in his video. The final result looks stock and he estimates the screen is around 97% as bright as with the original backlight.
This isn’t the first time we’ve seen an LED edge-lit upgrade.
The last one we saw
even used a custom PCB to host the LEDs.
[youtube=http://www.youtube.com/watch?v=HojPTbUlk_o&w=470]
| 11
| 10
|
[
{
"comment_id": "400144",
"author": "steve",
"timestamp": "2011-05-31T14:34:49",
"content": "Cool. I did this for my handheld oscilloscope to reduce interferences caused by the CCFL inverter. Works beautifully and enables different tones of white and better looking colors.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400151",
"author": "Ol Crustacean",
"timestamp": "2011-05-31T14:46:23",
"content": "How effective do you reckon this would be as a laptop backlight fix? I work for a repair place, and being able to do that rather than wait on an inverter from Taiwan would make many people happy.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400152",
"author": "Reggie",
"timestamp": "2011-05-31T14:56:13",
"content": "looking at the end of the video with a bright picture, I would’ve thought people wouldn’t appreciate the uneveness of the the light from the leds, it really does look like a bunch of leds instead of an evenly spread out source, I wonder if it couldn’t be made better using a diffuser of some kind between the leds and the LCD edge?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "5707546",
"author": "Neil",
"timestamp": "2019-01-02T20:01:40",
"content": "I noticed this too, but he used an LED strip with considerably wide spacing. Using something with tighter spacing (commonly available) would solve this issue.",
"parent_id": "400152",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "400154",
"author": "cde",
"timestamp": "2011-05-31T14:59:43",
"content": "@Crustacean: This is like fixing their powersupply with ducttape instead of ordering a new one. Effective, but not good in the long run (If it breaks again, and you arn’t around, they are SOL [And hello liability]).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400157",
"author": "Guest",
"timestamp": "2011-05-31T15:38:55",
"content": "“In the video after the break [Fileark] will walk through the entire project.”will => we’ll",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400197",
"author": "cde",
"timestamp": "2011-05-31T18:17:03",
"content": "@Guest, no. You fail at grammar naziing. The audience is not who is walking through the project, Fileark is.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400258",
"author": "pff",
"timestamp": "2011-05-31T21:15:19",
"content": "i actually had to do something similar for a job onceit really looks patchy because of the point source and spread. you probably get away with it for a photo if its distracting enough not to notice, but i would definitely be generous with the led count and run them at reduced power. not just to spread the light better but also to keep it cool, i would be very concerned about the heat this would make running this many leds for that panel. i dont know maybe leds have come a long way since i played with the high(ish) power ones",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400352",
"author": "t&p",
"timestamp": "2011-06-01T02:31:21",
"content": "The LEDs themselves needs more dispersingCheck those dispersing sheets if they are in the proper order.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400591",
"author": "snowdruid",
"timestamp": "2011-06-01T18:49:03",
"content": "im wondering 2 things: how does the power consumtion look like compairable to cc or better/worse? also led stips have “normal” led on them wich have a quite narrow angle would large angle led not be better suited for such tasks? what about changing the brightness of the screen is this still possible (assuming of course you could do that in the first place)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "2913127",
"author": "ChainReaction",
"timestamp": "2016-02-09T05:00:58",
"content": "How about using LED filaments? making a homemade glass tube with the filaments inside then backfilling with He would be remarkably cheap and would allow recycling of otherwise useless panels that might easily last another 10 years.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,180.81906
|
||
https://hackaday.com/2011/05/30/solar-powered-bird-house-tweets-using-b-squares/
|
Solar-powered Bird House Tweets Using B-Squares
|
Mike Szczys
|
[
"Arduino Hacks"
] |
[
"arduino",
"b-squares",
"bird house",
"solar-powered",
"tweet",
"twitter",
"xbee"
] |
This bird house will tweet
to let you know when the occupants pass through the door… err… hole. It uses solar panels to keep a battery topped off, and an Arduino along with an optical sensor which monitors the doorway to pass along an alert via an XBee module.
Admittedly, the video after the break is a bit tongue-in-cheek and doesn’t safeguard against the elements, or even against bird poop. AND it’s basically an advertisement for B-Squares. But we still like it.
These squares use magnetic corners to connect the solar squares together, as well as the squares that house the Arduino and the battery. These magnetic corners also act as the power and ground rails. Two nails have been pounded through the roof of the bird house, acting as a surface to magnetically attach the solar panels to, as well as a conductor to pass the power rails through the wood. It’s no wonder that
B-Squares are closing in on raising five-times their Kickstarter goal
.
[youtube=http://www.youtube.com/watch?v=aQmtyG3buzc&w=470]
| 13
| 13
|
[
{
"comment_id": "399975",
"author": "lolwut",
"timestamp": "2011-05-31T03:14:31",
"content": "over-engineered project is over-engineered…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399977",
"author": "justDIY",
"timestamp": "2011-05-31T03:38:01",
"content": "why not use the microcontroller on the xbee itself? dispense with the arduino and its massive power requirements",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400005",
"author": "zool",
"timestamp": "2011-05-31T06:27:07",
"content": "seems like just an ad for those square things",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400030",
"author": "timbot",
"timestamp": "2011-05-31T08:16:50",
"content": "“over-engineered project is over-engineered…”You know, I came at this site because I had no experience in making and wanted to get involved. And I am very excited to see people building so much cool stuff and I am delighted with each piece of knowledge I acquire (got shift registers down in my last project).I am sick to death of snipers banging on about Arduino, over-engineering, etc. Here’s a suggestion, if you wish to criticise someone else’s project because it is over-engineered stick up a tutorial on how to make it more efficient. Those of us who are just starting in this world don’t want to hear any more nonsense from the seasoned pros who should be guiding us along.Put up or shut up.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400097",
"author": "fartface",
"timestamp": "2011-05-31T12:04:37",
"content": "Way over engineered… a low end picaxe would have done it far better and with less solar cell due to far less power being used.Arduino is fun, but please people, learn what else to use! picaxe if you cant learn real pics, real pic programming if you can… Hell you can program most real pic’s in C for free if you look hard enough.as for x-bee… why? I still can not find a reason to use that horribly overpriced system. the dirt cheap 433mhz modules are easier to use and I can buy 90 of them for the price of ONE xbee module.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400117",
"author": "G",
"timestamp": "2011-05-31T13:10:28",
"content": "B-Squares thus far look pretty stupid to me.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400119",
"author": "zengar",
"timestamp": "2011-05-31T13:16:29",
"content": "@fartface: So why don’t you write down your alternative that uses a picaxe or real pic and a 433mhz module for communication and drop us a link to it here? You don’t even need to build the thing, just give us a diagram or detailed description to prove that you’re not just parroting “arduino bad, pic good.” Okay, in your case I’ve read enough of your comments to know that you know what you’re talking about, but please _show_ us that your suggestion for improving this project is workable and superior, rather than just saying it is.Between the people who say “why not just buy X that does all of this off the shelf” and the “if it has more than one commercial component it’s not a real hack” crowd, I’ve just about given up on the comment section here at Hack-a-Day.Or to put it another way: “What timbot said.”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400141",
"author": "fartface",
"timestamp": "2011-05-31T14:18:20",
"content": "@zengar Fine I’ll one up you even harder…http://www.sparkfun.com/products/10665All done except for the door entry sensor which is trivial enough that even a n00b can do that.three Ni-cad AAA batteries for the power supply and a single surplus ebay Solar cell for charging.. heck with a charging circuit… NiCads can take it… if you want to go even cheaper, rob a pair of old solar yard lights for the nicads and the solar cells. all done. brain dead easy, smaller than it needs to be, throw in a 1 wire temperature sensor for inside the bird house for added “features” under $24.00 total by any decent scrounger and buying the Wixel new from sparkfun.Taking advantage of the fact that the wixel will tolerate 3v6 in and the discharge curve of nicads are pretty flat coupled with the fact they will sink excess voltage nicely from the solar cells.Write the software right for this and you dont even need the solar cells. the batteries would last all summer long.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400162",
"author": "Haku",
"timestamp": "2011-05-31T16:06:24",
"content": "@justDIY, what “massive power requirements”?Do you have actual test numbers to back that statement up or are you just guessing?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400219",
"author": "lobo",
"timestamp": "2011-05-31T19:05:12",
"content": "Had to bite… I have to agree with the ‘over engineered’ comments. Cobbling something together is always fun and usually educational but a hack that solves a problem in an elegant way (cheap, minimalist, novel, etc) is truly noteworthy. Retrieving my crumpets from the toaster with a knife _is_ a hack, but I hope I never see it on hackaday!@fartface – re: Wixel, spot on – game, set & match!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400225",
"author": "Parcanman",
"timestamp": "2011-05-31T19:44:54",
"content": "So there’s nothing holding the solar panels on aside from the magnets? and the Arduino stuff that could easily fit inside the roof is instead on the floor, so where are the birds supposed to go? I won’t say this is over-engineered because to be honest, I don’t think this setup would last a week outdoors.If anything it’s severely under-engineered, development kits are designed to be put together and taken apart easily, when people make tutorials like this that show how easy it is to use this stuff for permanent installations, I think this is actually damaging to the noob community since it shows how easy it is to do something when you completely ignore efficiency and durability. It’s just like the home improvement shows that show how ignoring building codes makes it so much easier to do your own electrical or structural work.Also, we were all noobs once, I didn’t get to the point I’m at now by complaining about people who know more than me and acting as if they owe me an education. If someone mentions something you’ve never heard of or don’t understand, instead of complaining, try going to google, typing in what they said, and maybe you might learn something you weren’t expecting to.When I was a kid, there was no hackaday, there was no google, hell I didn’t even get on AOL until I was in 7th grade. If you wanted to build something, you had to use your imagination and be creative and find your own way to do it, and you learn so much more that way. There’s no creativity in following a step by step tutorial.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400273",
"author": "Bubba Gump",
"timestamp": "2011-05-31T22:00:25",
"content": "The very and I mean VERY first useful thing for tweeting…lol…tweeting is stupid in the first place and tweeting is for the birds…look at me look at me LOOK AT ME!Did you hear that twitter, youtube and myspace are merging? The new site will be youtwitface.com…lolz….Twitter and tweeting…this thing is spot on…gotta go and describe my poopz in 140 character or less…cya.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400285",
"author": "Chris",
"timestamp": "2011-05-31T22:45:42",
"content": "Here’s a better use of magnets for prototyping:1) Make or buy electronic modules with standard standoff mountings, rather than simultaneously over-engineered and limiting connection systems like this one.2) Get some female-female aluminum standoffs with internal threads. Using JB Weld or some other epoxy, glue small supermagnets to one end.3) Attach the standoffs to the modules using matching screws.4) Get a piece of galvanized sheet metal, or other material that magnets will stick to, as a prototyping area.Your modules will snap securely into place on your sheet of metal, yet can be moved or removed easily if you need to.If you want, you can later permanently mount the modules on another surface by using unmodified standoffs.Connections are easy enough with spring terminals, or 0.1″ male headers with 0.1″ jumper wires (available at Sparkfun/Pololu, or make your own).Many useful modules are quick and easy to make on your own on a piece of perfboard. Especially when you don’t have to include the overhead of a “standard” mounting; like slapping a ridiculous 28-pin Arduino pass-through connector on an I2C device that only requires four connections (two for power, two for data).If you’re making your own modules, consider using right-angle 0.1″ male connectors and putting all connections on one side. You can still mount them horizontally while prototyping, But later, if you want a space-saving “stacked” format, you can mount the boards vertically from the non-connector side, using a right-angle bracket. You can even make these brackets yourself. Get some aluminum angle, cut off small sections, and drill two holes. I like to make them like this (copy and paste into Notepad or other fixed font size editor):+——+| O |+——+| O |+——+Which gives them extra rigidity. Plus the sides protrude from the board profile, which make them easier to screw into the mounting surface.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,180.499035
|
||
https://hackaday.com/2011/05/30/a-bright-idea/
|
A Bright Idea
|
Kevin Dady
|
[
"HackIt",
"LED Hacks"
] |
[
"brainwaves",
"jeri ellsworth",
"leds",
"opamp"
] |
[Jeri Ellsworth] had a bright idea –
a brain-activated light bulb that floats above your head
. While out and about, she saw some guy with a video game icon attached to metal rod sticking out of his backpack. The rod made the icon appear to be floating above his head (think The Sims), which was the inspiration for this LED powered light bulb. The bulb is connected to a metal rod, as well as a metal hoop which is springy enough to keep a pair of electrodes snugly attached to your head.
Those electrodes, along with a third probe used for noise reference, are hooked up to a AD620 instrumentation amplifier. With the help of op amps, it modulates the red or green LEDs that are attached to the back side of the light bulb. The end result is an amusing way to show brain activity while being grilled on a Q/A panel, or while just wandering around taking in all the amazing sights presented at Maker Faire.
Join us after the break for a video demonstration.
[youtube=http://www.youtube.com/watch?v=Quz78xRxv1Y&w=450]
| 43
| 43
|
[
{
"comment_id": "399869",
"author": "Elettronica",
"timestamp": "2011-05-30T19:56:40",
"content": "Hi Jeri the electronics italian community love you!http://it.emcelettronica.com/energy-harvesting-%C3%A8-da-pazziAnalog Devices AD620 instrumentation amplifier is NOT for fools :)Great Idea!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399874",
"author": "alan",
"timestamp": "2011-05-30T20:11:29",
"content": "Got to love Jeri. She’s such a geek.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399877",
"author": "Dmitry",
"timestamp": "2011-05-30T20:24:28",
"content": "Indeed a very bright idea. I’ve always thought it’s hard to monitor the brain’s activity with just few electrodes. (Usually there is an electrodes net that we put on the full head and using some jelly for even better contact. It’s quite cumbersome) Very Nicely Done J.!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399885",
"author": "Oren Beck",
"timestamp": "2011-05-30T20:48:12",
"content": "Dude- disrespecting someone like Jeri is Doubleplus Uncool.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399887",
"author": "drn",
"timestamp": "2011-05-30T20:55:19",
"content": "amazing!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399892",
"author": "darkore",
"timestamp": "2011-05-30T21:18:15",
"content": "I generally like Jeri’s ideas a lot, but this is just stupid :(",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399896",
"author": "Philippe",
"timestamp": "2011-05-30T21:40:30",
"content": "@anon The old boys club again? Get some help.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399900",
"author": "Kevin",
"timestamp": "2011-05-30T21:53:12",
"content": "@Oren BeckAlso shes hot",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399903",
"author": "monti",
"timestamp": "2011-05-30T22:06:09",
"content": "cute",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399909",
"author": "TheCreator",
"timestamp": "2011-05-30T22:24:54",
"content": "I like how Jeri gets her own category tag.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399910",
"author": "shazzner",
"timestamp": "2011-05-30T22:28:48",
"content": "Is there a link to her talk?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399923",
"author": "Dino",
"timestamp": "2011-05-30T23:17:08",
"content": "I think this one is pretty cool. The circuit design is interesting…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399928",
"author": "CRJEEA",
"timestamp": "2011-05-30T23:30:59",
"content": "@TheCreator – and so she should (:@Oren Beck – I second that (: but only because you beat me to saying it first :DI sware if I thought I had a chance with Jeri I would be on the first flight out of the uk. Incredible woman. She has achieved so much I must admit I am a little envious (:All the same good luck to her. Hope the ideas keep flowing for many years to come.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399936",
"author": "anon",
"timestamp": "2011-05-31T00:01:23",
"content": "@CRJEEA – so what you are saying is you would smash her back doors in?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399937",
"author": "rallen71366",
"timestamp": "2011-05-31T00:14:22",
"content": "Circuit Design is an art, and Jeri is an artist. Like with all good art, some will love it, some won’t. I personally find her intriguing and inspiring. (And hot!)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399947",
"author": "steve",
"timestamp": "2011-05-31T00:55:13",
"content": "random flashes from the microcontroller would be as informative",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399949",
"author": "shazzner",
"timestamp": "2011-05-31T01:10:09",
"content": "Ah yes, the weekly ‘Jeri does something awesome and technically beyond most readers and all anyone posts about is that she’s hot’. I’m glad gender equality has come so far!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399968",
"author": "Kevin",
"timestamp": "2011-05-31T02:41:40",
"content": "@shazzner“Technically beyond most readers” – yes“Awesome” – maybe, I doubt most readers would WANT to do most of her projects even if they could.“all anyone posts about is that she’s hot” – We are just saying what we liked about the video… Have you ever watched a full infomercial? It’s not because you want to buy the product, its usually because they are selling bras or spanx or have a cute foreign girl as the host.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399976",
"author": "shazzner",
"timestamp": "2011-05-31T03:18:34",
"content": "Thanks for your insightful commentary Kevin, glad to know Jeri was trying to use her looks to sell something.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400024",
"author": "CRJEEA",
"timestamp": "2011-05-31T07:18:12",
"content": "@anon – there’s always one who has to lower the tone of the conversation…I would just settle for knowing her.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400057",
"author": "Kevin",
"timestamp": "2011-05-31T09:44:45",
"content": "@shazznerWell there all those ads and name dropping of element 14, which sells items….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400076",
"author": "Ryan Mercer",
"timestamp": "2011-05-31T10:43:07",
"content": "I love her, she’s awesome.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400107",
"author": "blue carbuncle",
"timestamp": "2011-05-31T12:30:51",
"content": "Good for her. Seems like a dumb idea though. Clean up the slobber boys, she isn’t a piece of meat. I generally enjoy her work, but this is a total pass for me.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400108",
"author": "t&p",
"timestamp": "2011-05-31T12:42:29",
"content": "On the sexual thing.1. I think she is with someone2. She alright.3. I see her more of like one of my professors.4. I still question if and why she doesn’t have a degree",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400110",
"author": "MrDC",
"timestamp": "2011-05-31T12:48:48",
"content": "All you phony chivalrous hypocrites who go out of your way to defend Jeri’s “honor” make me sick. So what if we drool over her being a hot chick?Get over it!We’re healthy hetero dudes that are reacting normally. As long as none of us jump on top of her against her will, there’s nothing wrong with admiring her for beauty AND brains.You want another hot science babe ?Anyone know who Lisa Randall is ? look her up.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400111",
"author": "jimmy",
"timestamp": "2011-05-31T12:49:23",
"content": "I used to feel the need to defend Jeri from idiotic comments.Now I know that she has been dealing with this nonsense from the beginning of her career. Didn’t faze her then; it doesn’t now (in person, she’d chew these morons up and spit them out…)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400116",
"author": "Alan",
"timestamp": "2011-05-31T13:03:26",
"content": "Some of you concern trolls forget one thing: When someone calls her hot, its in large part because of the brain in her head.Shes really pretty, but we can see that anywhere. What we really find attractive is that intelligence. It shows when she speaks and she demonstrates it in her body language.Shes incredibly smart, seems to be a nice person AND shes pretty. That is hot.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400118",
"author": "G",
"timestamp": "2011-05-31T13:13:34",
"content": "Goofy.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400134",
"author": "Miroslav",
"timestamp": "2011-05-31T13:38:20",
"content": "It would be nice to see a simplest possible circuit using an instrumentation amplifier, able to actually amplify and display brain waves. 3 electrodes max like here. As someone pointed out this is mostly picking up some muscle activity.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400136",
"author": "Kevin",
"timestamp": "2011-05-31T13:57:33",
"content": "@t&pI think she is with someone– So are most maxim models, so what?2. She alright.– Taste is a personal thing3. I see her more of like one of my professors.– Doesn’t that make her hotter?4. I still question if and why she doesn’t have a degree– Why? She does not need a piece of paper to validate whats in her head.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400137",
"author": "Life2Death",
"timestamp": "2011-05-31T13:58:27",
"content": "What is the sound of a 1000 geeks in their mothers basements posting to HaD?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400140",
"author": "Kevin",
"timestamp": "2011-05-31T14:04:21",
"content": "@Life2DeathIs it fap fap fap fap?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400155",
"author": "Zeno Arrow",
"timestamp": "2011-05-31T15:23:46",
"content": "@KevinThere’s nothing wrong with seeing someone is attractive, but there is no need to be so bawdy. Why can’t you treat female hackers as your equal (or in Jeri’s case, superior)?In other words, you were presented with a hack, talk about the hack. Your judgements on personal appearance, whilst you are entitled to them, are off topic. Show the respect you’d like someone else to show you.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400171",
"author": "bothersaidpooh",
"timestamp": "2011-05-31T16:39:32",
"content": "@kevin Yeah, a piece of paper has nothing to do with:- Experience, ingenuity or ability to problem solve.Jeri chose very early on not to go down the route of formal qualifications, preferring to do research for research’s sake. I feel that many people have a lot to learn from her methods of problem solving.My $0.02 worth.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400182",
"author": "TheRatatat",
"timestamp": "2011-05-31T17:09:44",
"content": "I think I would have drilled out the end of the lightbulb and put the lights inside. You can actually do it without breaking the bulb.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400193",
"author": "shazzner",
"timestamp": "2011-05-31T18:00:47",
"content": "Seriously, literally every week it plays out the same. Something Jeri does gets posted, some creepy retards talk how they want to sexually assault her, others call them out, more pieces of shit defend objectifying her, other mental-children chime in with more garbage.Why oh why, can’t there be a moderator to ban the idiots in the first place?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400226",
"author": "anon",
"timestamp": "2011-05-31T19:45:17",
"content": "I would fap out to her brains :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400244",
"author": "h4xorX",
"timestamp": "2011-05-31T20:31:06",
"content": "What started off as a tech discussion is now a geek obsession. I bet Jeri is lauhging her ass off reading these comments!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400308",
"author": "Jake",
"timestamp": "2011-06-01T00:00:47",
"content": "Stop feeding the goddamn trolls! Awesome project!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400336",
"author": "Kevin",
"timestamp": "2011-06-01T01:14:31",
"content": "@shazzner“other mental-children chime in with more garbage.”Seeing that you are not talking about the project, welcome to the garbage spewing child club",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400355",
"author": "reza",
"timestamp": "2011-06-01T02:48:34",
"content": "I checked out the circuit, doesn’t really do much other than change color based on the electrical pickup voltage – would be better as a heart rate monitor. you really need to add a FFT to the output rather than a comparator and change color based on dominant frequency — much more useful. I also find the inverted CM gnd unnecessary and only there (in datasheets) to help sell more ICs. A gnd hookup would work just as well. -reza",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400665",
"author": "Jordan",
"timestamp": "2011-06-01T21:54:00",
"content": "the first ten seconds look like my CPU light. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "429841",
"author": "bothersaidpooh",
"timestamp": "2011-08-07T10:20:34",
"content": "I mentioned Jeri’s invention to someone at the shop, they said that it was most impressive and wanted to know where to buy one.Wonder why they aren’t available as a kit yet, it would seem to be an ideal way for electronics hobbyists to get into EEG experimentation with theappropriate safeguards such as TOSlink or wireless based optical interface etc.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,181.077524
|
||
https://hackaday.com/2011/05/30/tree-climber-takes-a-page-from-the-inchworm-book/
|
Tree Climber Takes A Page From The Inchworm Book
|
Mike Szczys
|
[
"Robots Hacks"
] |
[
"climb",
"inchworm",
"tree"
] |
Sharp talons and a strong torso
let this robot climb trees
, even while carrying a heavy payload. It uses a simple principle, two gripping units allow it to grab onto the tree. These modules alternate, one grips while the torso moves the other up the tree.
You can make out the trio of rods which connect the front and back half of the robot in the image above. Watch the video after the break to see how the motors move these rods with the dexterity of an inchworm, allowing it not only to climb upwards, but to bend and flex to match the contours encountered in the wild.
This was presented at International Conference on Robotics and Automation a few weeks ago. Unfortunately we can only find
an abstract for the paper
so please leave a link in the comments if you know where to find the full monty.
[youtube=http://www.youtube.com/watch?v=zmqDePXM89Y&w=470]
[via
Adafruit
]
| 8
| 8
|
[
{
"comment_id": "399845",
"author": "Dino",
"timestamp": "2011-05-30T17:20:29",
"content": "Very ingenious! I’ve been thinking about wall climbing robots lately… this is inspiring.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399849",
"author": "Cthulu",
"timestamp": "2011-05-30T17:43:28",
"content": "Attach Camera, paint camo.Mobile surveillance anyone?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399871",
"author": "Tonje",
"timestamp": "2011-05-30T20:01:08",
"content": "inspiring :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399899",
"author": "gman",
"timestamp": "2011-05-30T21:50:14",
"content": "cool. Now give it a third arm and and basket then voila robotic fruit picker.For a more scientific purpose add a controllable camera and use it for mobile observation in forest canopies.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399913",
"author": "Axel Roest",
"timestamp": "2011-05-30T22:56:43",
"content": "I wonder what kind of propulsion system is used between the head and tail part, as it is so smooth. Just regular motors and screw-thread?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399914",
"author": "vonskippy",
"timestamp": "2011-05-30T23:00:25",
"content": "Chinese eh? Wonder who they stole the technology from?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400025",
"author": "Samiur Rahman Shah",
"timestamp": "2011-05-31T07:49:57",
"content": "@vonskippy: Nature, perhaps?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400632",
"author": "YO9GJX",
"timestamp": "2011-06-01T20:41:37",
"content": "It use just three endless screws and stepper mottor. The same sistem is at industrial robot for pipes surveillance",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,181.288715
|
||
https://hackaday.com/2011/05/30/reverse-engineering-embedded-device-firmware/
|
Reverse Engineering Embedded Device Firmware
|
Mike Nathan
|
[
"Security Hacks"
] |
[
"embedded systems",
"firmware",
"reverse engineering",
"security"
] |
While not necessarily an easy thing to learn, the ability to
reverse engineer embedded device firmware
is an incredibly useful skill. Reverse engineering firmware allows you to analyze a device for bugs and vulnerabilities, as well as gives you the opportunity to add features if you happen to be so inclined. When it comes to things such as jailbroken iPhones, Android phones, and Nooks, you can guarantee that a close look at the firmware helped to move the process along.
[Craig] works with embedded systems quite frequently and put together a detailed walkthrough demonstrating how he reverse engineers device firmware. The subject of his hacking was a new firmware package he obtained for a Linksys WWAG120 Wireless-N router.
His tutorial walks through some of the most common reverse engineering methods and tools, which allow him to slowly unravel the firmware’s secrets. When finished, he had a working copy of the router’s boot loader, kernel, and file system – all ready to be further analyzed. His writeup includes tons of additional details, so be sure to swing by his site if reverse engineering is something you are interested in.
| 17
| 16
|
[
{
"comment_id": "399831",
"author": "TheCreator",
"timestamp": "2011-05-30T15:41:59",
"content": "Learned some new tricks. Very interesting.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399834",
"author": "Panikos",
"timestamp": "2011-05-30T15:51:53",
"content": "fantastic read. Thats one for the favorites. I dont want to miss a tutorial by these guys",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399848",
"author": "Shane",
"timestamp": "2011-05-30T17:33:15",
"content": "Always wanted to learn this stuff. Time to take a peak.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399875",
"author": "bogdanm",
"timestamp": "2011-05-30T20:19:59",
"content": "Excellent article, thank you very much. YMMD :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399878",
"author": "Reikaze",
"timestamp": "2011-05-30T20:31:22",
"content": "Excellent, very informative and interesting.Even if you’re not going to hack this files, is good to know how to use those tools.Thank you!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399879",
"author": "MrX",
"timestamp": "2011-05-30T20:32:48",
"content": "Quite obvious for people used to work with embedded devices. However each person has its own tricks, so we can always learn something ;)Next step, how to extract Linux (kernel of course) configuration and build a custom kernel for the device. Where to find possibly vulnerable executables/scripts in the file-system (init.d, udev scripts, wwwroot web-based configuration). :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399889",
"author": "ColinB",
"timestamp": "2011-05-30T21:13:14",
"content": "When I heard “reverse engineering” and “firmware”, I was expecting something more interesting than just extracting the Linux file system from a firmware image.“Interesting” to me would include actual reverse engineering of machine code or discovering significant undocumented system design details or features.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1070803",
"author": "Pete Goolsby",
"timestamp": "2013-10-07T21:56:30",
"content": "I agree. The article is informative to be sure – to me, (like anyone G.A.F.F.) hacking implies having the facility to modify the operation of the device in a way that is meaningful to the hacker. Without disassembling the code section, understanding the i/o map of the embedded device architecture and knowing something useful about stored initialization variables, constants, interrupt vector usage, etc… it’s going to be tricky for a hacker to know how to alter this particular embedded router device. This router, being a linux based system gives it up on the OS in the article, which was interesting to read. As for the functional operation and execution of the object code, … ???",
"parent_id": "399889",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "399902",
"author": "Booker T. Worthington",
"timestamp": "2011-05-30T22:04:23",
"content": "@ColinBMay be simple, but an interesting read for those of us unfamiliar with the process.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399918",
"author": "Arran Short",
"timestamp": "2011-05-30T23:03:03",
"content": "I’m in the process of doing this myself with a zoom 4501.unfortunately its not as simple because it doesn’t use uboot but some weird bootloader called jboot.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399973",
"author": "Gdogg",
"timestamp": "2011-05-31T03:02:46",
"content": "@ColinB Yeah, but hopefully it’s an intro into that sort of thing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400048",
"author": "xorpunk",
"timestamp": "2011-05-31T09:21:31",
"content": "in realistic scenarios you usually end up reversing off dumps you get from shellcode injection or glitching, and it’s usually encrypted these days and you have to get a complete structure(like ELF) and send it through a decryption routine or hardware-oracle.Enabled OCD is something you only find on small toys and stuff nobody cared about.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400113",
"author": "atiti",
"timestamp": "2011-05-31T12:57:59",
"content": "Excellent read! I’m looking forward to trying this out on some other products very soon:D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400236",
"author": "NateOcean",
"timestamp": "2011-05-31T20:14:49",
"content": "Writing a disassembler is much easier than writing an assembler or compiler. For a disassembler there’s nothing “high level” to unravel or parse. The only problems I run into are embedded jump tables, which my disassembler attempt to disassemble. I have a inline flag that jumps around that. Occasionally you have to make several passes to find all the tables, but one you have, the assembly language code just snaps into place.Another trick I used, was to identify the compiler used to generate the code I’m disassembling. In one case the manufacturer made the compiler available online for free. That was awesome. I could now see exactly what machine language code was spit out for various common C language statements. For example, strncpy. That allowed me to substitute C statements in place of multiple assembly language statements, which made things a lot more readable.A third strategy, I employ early on, is to find the various data areas. This might be embedded tables, or bit maps for fonts or images and icons. In most cases you have a pretty good idea of what you’re looking for, since you’ve likely seen the fonts, or icons, or images used in the application when it’s working. Often it only takes a small amount of experimentation to determine the row and column numbers, and then you can disassemble these icons and images as well. From that, you can examine your disassembled code for references to the icons and images and fonts, and that gives you a lot of insight into what that code does. Often there is a structure that preceeds the data, and unraveling that is now much easier once you know what it’s referring to.Also, for an embedded micro, which has well defined I/O ports for various functions (serial, I2C, timers, etc) it’s helpful to generate symbolic references to these. That way your disassembled coded can refer to loading a baud rate counter, as opposed to just some anonymous value into some anonymous register. Then, once again, working backward, you can gain insight based on what other routines might be calling those I/O related routines that you’ve disassembled.So I guess a common theme here is that disassembly is an iterative process, and in many cases once you find a clue, you work *backward* from that point as well as forward.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400238",
"author": "NateOcean",
"timestamp": "2011-05-31T20:19:33",
"content": "One more thing…Part of that iterative process is to give meaningful names to routines and functions that you’ve deciphered. Then, once you’ve run your disassembler again, your coded now has symbolic names which makes the code easier to understand. The larger the program you’re disassembling, the more important this is.Just another part of the iterative process.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400283",
"author": "Retroplayer",
"timestamp": "2011-05-31T22:30:29",
"content": "There used to be an awesome program I used to extract graphics from files called byteraper. Basically, it was just a hex editor that displayed in RGB. You had a little window that you defined the size of data to look at and some settings for the encoding method. This was back in the DOS days, and I haven’t been able to get my copy working in windows. Been looking for a similar tool ever since.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "402133",
"author": "davidcmoisan",
"timestamp": "2011-06-06T01:31:30",
"content": "If this stuff excites you, look for “Reversing” on Amazon. It’s an old but excellent text on computer-related reverse engineering.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,181.344966
|
||
https://hackaday.com/2011/05/30/hackaday-links-monday-may-30th/
|
Hackaday Links: Monday, May 30th
|
Mike Nathan
|
[
"Hackaday links"
] |
[
"cnc",
"gamepad",
"gcode",
"laptop",
"laser",
"led",
"nes",
"playstation 3",
"portable",
"zigbee"
] |
Huge, fully functional NES game pad replica
Students at Dutch TU Delft university recently built
a huge replica of the original NES controller
(
Google Translation
), which is fully functional and can be used to play games on a large display screen they also installed. How big is it, you ask? It’s about 6 meters wide – over 30 times the size of the original NES game pad and requires participants to jump on the buttons to play.
Convert any image to G-code
Members of [Forskningsavdelningen], a Swedish hackerspace,
are working on software
that will allow users to vectorize bitmap images in order to convert them to G-code files for CNC milling. A good portion of the project is complete, but there is still a bit of work to do, so you won’t see it in action for a while. When it’s ready, we’ll be sure to let you know.
Convert your lame Dead Space plasma cutter into a bonafide laser weapon
If you forked out big bucks for the special edition of Dead Space 2,
you know how lame the included plasma cutter replica is
. Check out this video, that shows you how to convert your LED toy to a dual laser, fire starting, laser pistol. The process is pretty simple, so what are you waiting for?
Synchronized, LED-lit juggling balls
[Jonathan] wrote in to share a project he and some friends have just finished. He’s not sharing a ton of details at the moment, but
he has put up a video showing off their wireless LED juggling balls
. All we know is that they use bright RGB LEDS, Zigbees for communication, and that they are awesome. We can’t wait to hear more about them!
Water cooled PS3 Laptop
[Pirate] recently unveiled his latest work,
a water-cooled Playstation 3 laptop
. It looks pretty sharp, and can undoubtedly rival some of Ben Heck’s work, even if it does have an external PSU. Obviously having a separate power component isn’t necessarily ideal, but when you are cramming all of that water cooling goodness into such a small package, something has to give!
| 5
| 5
|
[
{
"comment_id": "399820",
"author": "G-reg",
"timestamp": "2011-05-30T15:12:30",
"content": "Water cooled PS3.. Same thing im working on so im goin to be a little critical here. Im just not focusing on it being a laptop. Kudos to that, but the fact you have an external unit to lug around, besides the laptop, seems to void (imo) the purpose of it being a laptop. Water cooling is premo, but the extra junk being next to the ps3 is an eye sore and messes with my ocd. But i have to thank you. If it wasnt for that being the trend, i prob wouldnt feel as pushed to create an all in one as i am.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399825",
"author": "xyz",
"timestamp": "2011-05-30T15:24:15",
"content": "That PS3 laptop looks pretty dodgy. Black case held together with silver button head screws? The cable from the power supply looks like it’s held together with electrical tape. Probably best not to comment on the photo of the internals.Ben Heck’s work may have the same questionably utility but other than that it’s in a different league.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399829",
"author": "jim",
"timestamp": "2011-05-30T15:41:33",
"content": "“Will not work in hot weather.”Yeah, that’s not due to the coolant being hot; its own heatsink can’t get below ambient temp either.I dunno, for a thousand bucks I could buy a good monitor with a PS3 and a bag to carry them in.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399830",
"author": "Jack",
"timestamp": "2011-05-30T15:41:40",
"content": "“held together with silver button head screws?”I agree 100%. It would have looked a lot better with some nice black countersunk machine screws. Hopefully he’ll consider that on his future builds.Looks like it was a fun project to design and build, though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399862",
"author": "kaoD",
"timestamp": "2011-05-30T18:52:36",
"content": "The video of the guys juggling is… erm… questionable as juggling. Looks cool tho.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,181.245601
|
||
https://hackaday.com/2011/05/28/quadruped-military-vehicles-from-back-in-the-day/
|
Quadruped Military Vehicles From Back In The Day
|
Mike Nathan
|
[
"classic hacks"
] |
[
"army",
"AT-AT",
"big dog",
"quadruped",
"star wars"
] |
While Boston Dynamics’ Big Dog is pretty impressive,
check out this video
of the US Army’s first attempt at a quadruped vehicle. Created in the early 1960s with the help of GE, this Army experiment was the first successful attempt of replicating a four-legged animal with a mechanical machine.
This “Walking Truck” was driven by a single operator who moved each of the vehicle’s legs using force-feedback hydraulic levers. Choreographing the machine’s movement was quite complicated, and during testing the Army found that the operator needed a mental break after only 15 minutes of use. As you can see in the video, the vehicle flexes some serious muscle. It kicks a Jeep out of its way with little effort, but it is still able to gently step on a light bulb without breaking it, due to the level of tactile feedback received by the operator.
If it weren’t for government budget cuts, we could be living out [George Lucas’] dream of AT-AT based combat right this minute!
[via
Gizmodo
]
| 14
| 14
|
[
{
"comment_id": "399186",
"author": "Stephen",
"timestamp": "2011-05-28T15:21:33",
"content": "This is an amazing example of old technology doing very complicated mechanical movements!Now if only this were an exoskeleton instead!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399190",
"author": "K!P",
"timestamp": "2011-05-28T15:26:35",
"content": "jam in some walking routines and a few powerfull pc’s and retry the concept! :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399198",
"author": "Mooseral",
"timestamp": "2011-05-28T15:35:06",
"content": "GE has how many more crazy exoskeleton projects in their closet?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399217",
"author": "JeremyC",
"timestamp": "2011-05-28T15:47:31",
"content": "That is really cool. Anyone remember that movie Robot Jox?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399251",
"author": "Jimmy",
"timestamp": "2011-05-28T17:02:49",
"content": "The light bulb demo is awesome. It looks cool, and proves nothing. Since the light bulb is on a pillow, you don’t need any tactile feedback — the operator just needs to visually check that the light bulb isn’t pushed too far into the pillow. The quad would be cool today let alone 1960, but that particular ‘demo’ is a bit disingenuous.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399267",
"author": "caleb",
"timestamp": "2011-05-28T17:39:02",
"content": "interesting. i agree, the lightbulb thing is just a gimmick. but that aside, i bet they didnt goto radio shack for their parts :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399277",
"author": "Hackerspacer",
"timestamp": "2011-05-28T17:50:59",
"content": "This shows that the mechanical parts and functionality were there all the way back in the 1960’s but the microcontroller controls needed another 50 years (!) to catch up.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399288",
"author": "j_at_chaperon",
"timestamp": "2011-05-28T18:40:23",
"content": "Give me a long cable and a spaceship and I make it fall !",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399339",
"author": "bzroom",
"timestamp": "2011-05-28T21:32:11",
"content": "at first i was all:http://www.youtube.com/watch?v=ZMGCFLEYakMbut then i:http://www.youtube.com/watch?v=cNZPRsrwumQI remember this robot from my early days of research. like when i was 10, building lego.CLASSIC Remember the big ATV APC with tri-star wheels? Can’t seem to find a picture of it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399340",
"author": "bzroom",
"timestamp": "2011-05-28T21:34:35",
"content": "Crap, sorry to auto embed those videos:Here’s the tri-star beast:http://books.google.com/books?id=vYxRVw955-oC&lpg=PA362&ots=SWVw2JsOu4&dq=tri%20star%20wheel%20robot%20builders&pg=PA363",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399419",
"author": "Gary",
"timestamp": "2011-05-29T04:11:04",
"content": "I have actually seen this. It is at the transportation museum in Fort Eustis Va",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399422",
"author": "BlueCoder",
"timestamp": "2011-05-29T04:41:25",
"content": "The first makes me think about the possibility of taking a small animal or insect and using it’s brain to operate the thing most of the time and allowing a human to override for specific tasks. And of course that would have to bring up ethical considerations. A cockroach brain should certainly be able to operate such simple lets with feedback.The second video is eerie, the legs look like they are moving so naturally.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399513",
"author": "RexOfRome",
"timestamp": "2011-05-29T15:42:22",
"content": "One RPG and that would be a pile of scrap. What were they thinking?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399650",
"author": "David",
"timestamp": "2011-05-29T23:49:34",
"content": "RPG’s do not fly straight. Also one RPG and just about every vehicle is done for.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,181.58532
|
||
https://hackaday.com/2011/05/28/wireless-controller-operates-your-cnc-mill/
|
Wireless Controller Operates Your CNC Mill
|
Mike Szczys
|
[
"cnc hacks",
"Playstation Hacks"
] |
[
"emc2",
"linux",
"mill",
"pendant",
"qtsixa",
"sixaxis"
] |
[Darrell Taylor] wanted to add a CNC control pendant to his mill but didn’t want to foot the bill which can often run several hundred dollars. These pendants are basically a physical remote control that operates the CNC software that controls the machine. Since he was already using a Linux box running EMC2, it wasn’t too hard to figure out how to
operate the mill with a PlayStation controller
.
To get the controller talking to his Linux machine he uses a package called
QtsixA
. The package identifies and loads the control through Bluetooth pairing. From there it can be used to map the buttons and joysticks as keys on the keyboard or as a mouse. In the video after the break [Darrell] demonstrates how he has his shortcuts set up. He’s able to move the machine head, and even start or step through the programmed routine. As he mentions, this is pretty nice if you’ve got dirty hands; just throw the controller in a zipper bag and you’re set to go.
[youtube=http://www.youtube.com/watch?v=ZIg2FO6e52k&w=470]
| 7
| 7
|
[
{
"comment_id": "399163",
"author": "Alex",
"timestamp": "2011-05-28T14:34:21",
"content": "Good idea! I was afraid he’d done something silly with the motion control, but this is pretty sane. I can see where it would be especially useful in a situation like this, where the PC is relatively far away from the mill.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399180",
"author": "td06",
"timestamp": "2011-05-28T15:09:37",
"content": "Sadly, the controller also goes into battery save standby mode, and can be a very dangerous thing to come out of.stick to the WIRED video game remotes for your high speed spinning tools!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399193",
"author": "anders",
"timestamp": "2011-05-28T15:31:14",
"content": "Here’s a more conventional MPG-build, also hooked up to EMC2:http://www.anderswallin.net/2006/11/jogging-emc2/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399240",
"author": "BiOzZ",
"timestamp": "2011-05-28T16:39:51",
"content": "i use an xbox 360 controller with a custom HAL on EMC2",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399306",
"author": "stunmonkey",
"timestamp": "2011-05-28T19:30:19",
"content": "using a WIRED playsation or xbox controller is totally normal and common, and the cnc software companies offer options to do just that, plug and play. in other words, yawn.the only thing this adds is a lot of dangerous, as Alex pointed out.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "403032",
"author": "Anthony",
"timestamp": "2011-06-08T15:47:42",
"content": "This is very cool, but the choice of pad rules out the possibility of a Konami code to mill out a secret file as an easter egg.Then again, I utterly suck at programming, so this is probably a trivial thing to implement if anyone felt like.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "8082055",
"author": "Nitrous",
"timestamp": "2025-01-12T16:45:33",
"content": "Can’t seem to find the QrsixA package.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,181.397507
|
||
https://hackaday.com/2011/05/27/speak-your-mind-and-help-radioshack-suck-less/
|
Speak Your Mind And Help RadioShack Suck Less
|
Mike Nathan
|
[
"News"
] |
[
"radioshack",
"suck"
] |
We can all agree that RadioShack
isn’t exactly the DIY mecca it once was
.
What used to be a haven for amateur radio operators, tinkerers, and builders alike has devolved into a stripmall mainstay full of cell phones and overpriced junk. RadioShack knows that they have fallen out of your good graces, and since you are the demographic that put them on the map, they are appealing to the DIY community for input.
They want to know what is important to you – what you would like to see at your local RadioShack, and what would bring you back through their doors. Obviously price is a huge concern, especially with online outlets like Digikey and Mouser just a few clicks away. At the end of the day however, if you require a component RIGHT NOW, it would be nice to have the ability to grab some parts locally.
We’re well aware of the fact that this is all part of a marketing scheme, but if it helps stock your local store with a few odds and ends that are actually helpful, it won’t hurt to let your voice be heard.
Stick around to watch the video appeal from RadioShack’s brand manager, [Amy Shineman].
[Thanks komradebob]
[via
ARRL.org
]
[youtube=http://www.youtube.com/watch?v=JxyDab_s_lY&w=470]
| 351
| 50
|
[
{
"comment_id": "398727",
"author": "aztraph",
"timestamp": "2011-05-27T22:10:02",
"content": "I have misgivings about this, I see it as a marketing ploy too, I used to work there (my wife too, that’s were we met). I will be giving all the advise i can, but do not have high expectations.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398728",
"author": "macegr",
"timestamp": "2011-05-27T22:11:06",
"content": "They can’t stock everything. However, they used to be good at stocking stuff that everyone needs from time to time. If they just had a big selection of switches, relays, connectors, resistors, capacitors, wire, enclosures, and prototyping tools I think they’d be back. Literature and kits would help too.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398729",
"author": "MRC",
"timestamp": "2011-05-27T22:12:12",
"content": "the problem is that the Niche market Radio Shack once occupied is no longer present. they had three things going for them at the time:1: the popularity of HAM and CB radio as a hobby2: no internet to cut into their business share for parts, devices, and supplies3: knowledgeable staff (for the most part) that could help customers, and sell them stuff they needed. not push crap they didn’t.#1 is no longer large enough to support a nationwide chain business.2&3 can be found on the net, and shipping is cheap enough to be competitive.unless modern consumer devices take a turn for the self-repairable, I wish Radio Shack luck in its continued survival.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1002436",
"author": "John H.",
"timestamp": "2013-05-08T20:37:33",
"content": "YOU ARE WRONG, and I think you must be a bean counter.",
"parent_id": "398729",
"depth": 2,
"replies": []
},
{
"comment_id": "1024715",
"author": "Ray Goodbend",
"timestamp": "2013-07-09T17:16:15",
"content": "All sentiment aside (John) — I think MRC has really struck the truth on points 2 and 3. But I think #1 needs to be expanded.The demographic of people needing components is not just HAM and CB hobbyists. I have never been in that demographic, but used to be in Radio Shack all the time. Anybody who likes to tinker with electronics needs components. From fixing electronics to building your own “toys”. This demographic is not large, nor has it ever been. But there are still geeks (like me ;-) looking for components. Old or young, they are out there.So I would have to disagree on point 1, I believe the demographic base is still large enough to support the “good-ol-days” of Radio Shack having a store full of components, wires, and various prototyping supplies.However, points 2 and 3 almost guarantee Radio Shack will never again be the go-to for us. I can not remember the last time I walked into a Radio Shack and spoke to an owner or staffer who would be able to tell the difference between a diode and a resister — let alone read the color code of a resister or suggest a MOSFET would be a better choice for the amplifier you are talking about building instead of bipolar in your hand! Nor do most of the staff seem to even care about such things. How could the store possibly stock the right components and other items we DIY nerds want when their staff are not even in this demographic?But even if they do manage to turn this problem around, Being price competitive with a store-full of components would be difficult. The only way I could see them doing it would be to treat their components stock as lost-leader with the goal of generating more business (thus selling bigger ticket items). More than that, stocking the bigger-ticket items as unique things the DIY electronic community (geeks) want.psst…Radio Shack execs….run-of-the-mill cell phones are not it…even though 1/4 of the store space is now dedicated to them.",
"parent_id": "398729",
"depth": 2,
"replies": [
{
"comment_id": "1688234",
"author": "Gary",
"timestamp": "2014-08-04T22:36:30",
"content": "They need to follow the Amazon philosophy. Sell the real estate and send the inventory to a central ware house then go on line. IMHO that’s their only hope.",
"parent_id": "1024715",
"depth": 3,
"replies": []
}
]
}
]
},
{
"comment_id": "398730",
"author": "aztraph",
"timestamp": "2011-05-27T22:12:58",
"content": "It would be nice to be able to get parts locally, i think i’ll stop by there and ask them about this, see what their take is. the manager and i went to high school together, see if i can get any details on what’s in place for this.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398736",
"author": "frank",
"timestamp": "2011-05-27T22:21:04",
"content": "The markup on their components is crazy! Same thing with Fry’s. I guess that is the cost to pay for convenience.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398738",
"author": "Sobachatina",
"timestamp": "2011-05-27T22:24:10",
"content": "I’m surprised and pleased that they are even pretending to care about DIYers. I want to encourage this behavior.I think they could (re)make their niche in beginners’ electronics education. Some of the best starter’s books I have were written by Forest Mims III and published by Radio Shack in the early 80’s. Publish cool project plans and stock the parts to make them and they’ll make friends with a new crop of young hobbyists.At that point they’re adding value that is hard to find on the internet. Sure you can get parts cheaper on digikey but it will cost you $8 shipping and which one of their 10,000 switches do you actually want?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398739",
"author": "Renet123",
"timestamp": "2011-05-27T22:25:55",
"content": "I think that if they really want to make it, they are going to have to give a little. I think that it would be cool if they had more of the entry level electronic diy stuff, maybe some arduino’s. I would also suggest they get into doing free ‘classes’ or ‘workshops’ doing things like – ‘put together an static LED sign or ‘how to solder’.. something cheap that would engage people to come by, and buy the things they have learned how to do. One more thing – stop trying to sell me a router for $120 that i can buy at Best Buy down the street for $65.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398741",
"author": "j_jwalrus",
"timestamp": "2011-05-27T22:28:23",
"content": "my $.02Sell more “development kits” and boards. Stock PIC, AVR, Propeller, Arduino, etc.Establish relationships with Adafruit, Sparkfun, Maker Shed, Seeed Studios, Parallax etc. Support these kits with DIY books that can get people started on these projects! (Example would be the 555 chip and the Forrest Mims Books that radioshack used to be famous for. They still sell Mim’s books, but they are harder and harder to find.)You could trial a few select products from the above vendors in your “DIY” section of the store.Don’t charge too much of a mark-up, or no one will buy them! See it as an opportunity to restore the radioshack name… Right now I think of radioshack as “BatteryShack” or “PhoneShack”.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398742",
"author": "strider_mt2k",
"timestamp": "2011-05-27T22:30:11",
"content": "I call bullshit.I think it’s just a way to get folks in there to sell them a cell phone.Radio Shack HATES the parts section, folks HATES IT.I worked for that company for five years up until a year ago and I’m confident that there is no love for the parts folks because parts isn’t a viable revenue stream anymore.While they are shaking your right hand you’d best keep any eye on their left hand.I don’t trust ’em, and I don’t love ’em.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398743",
"author": "j_jwalrus",
"timestamp": "2011-05-27T22:32:11",
"content": "another $.02 – Sparkfun had a awesome PCB vending machine at the San Francisco Bay Area Maker Faire this past weekend. It was stocked with common Sparkfun products like Arduino, Xbee, Lithium ion batteries, small kits and breakout boards. Granted it was a cash-only machine, it would get people into the radioshack store. Support the vending machine with knowledgeable staff and resources (books or even an online presence) and it would be gold.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398744",
"author": "CryonicTech",
"timestamp": "2011-05-27T22:33:09",
"content": "Being that I work for Radio Shack….and a tech head…I don’t like it. I find myself pointing out other places for pieces and parts mostly because the stuff we generally sell suck, and its way overpriced. Generally it is a 50%-75% markup. We are focused on getting sales regarding cell phones and accessories i.e. Someone comes in, our DM wants us to say “Welcome to radioshack, what did you bring to trade in?” and they look at us like we are retarded when we say it but if we don’t we get in trouble. Then we are required to get *at least* 2 accessories with phones and a warranty with the phones *and* accessories. Again…when we don’t we get yelled at because our numbers are low and our hours get cut because our sales aren’t high enough to justify the hours. It’s ridiculous. I’ll probably get fired for this comment since they track everything we employees do online (notified of this during last security and loss prevention training) as not to “skew” the Radio Shack name. I know most people don’t care about things like this but it really turns me off from buying things from a company like this, and I work there and get an at cost discount. *end rant*",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398746",
"author": "Jones",
"timestamp": "2011-05-27T22:35:45",
"content": "All of these ideas have to do with building a community. Not just attracting electronic component consumers, but creating them as well:1) workshops.Have free/cheap classes teaching my kids to solder and we’re probably going to by a few components for them on the way out.2) Hardware mods for the non-technical public.Offer small fees to upgrade cheap capacitors in Samsung LCD TVs, or to add usb ports to routers.3) Maker contestsBe the kind of place where people go to show off what they’re building, or to get ideas.4) Facilitate electronic clubsVolunteer a back room and a few breadboards for people to meet one evening a month to work on stuff.Help the community learn to appreciate the art of electronics. Do that and you’ll get people to eventually buy electronic parts.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398747",
"author": "cali_insomniac",
"timestamp": "2011-05-27T22:40:23",
"content": "The last time I ever set foot in a radio shack I was looking for a quick ‘cheap’ hdmi cable (expecting to spend around $15-$20). They tried to upsell me on their brand name special hdmi cables for $70 and when I told them I didn’t want to spend $70 on an hdmi cable they offered me to ‘finance it for $7 a month’. I felt so insulted I didn’t even respond I just walked out. I wouldn’t give them another cent of my money no matter what they do.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398750",
"author": "dontpanic",
"timestamp": "2011-05-27T22:41:40",
"content": "As a former RadioShack employee who was “asked to quit” because of my refusal to sell cell phones, I say to hell with you. I would never step foot in a Shack again, and I advise my friends to steer clear of your stores on a regular basis.Obviously RadioShack exists to shove overpriced and under-performing technology on to ignorants consumers. They hire ex-Sprint and ex-Verison kiosk drones over tech-savvy people for a reason: they want everyone that walks in the door to buy a cell phone contract.Use an online retailer or support your local small business. Don’t shop at The Shack.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398749",
"author": "Aaron",
"timestamp": "2011-05-27T22:41:44",
"content": "I wonder if they even employ anyone who can go through the mass of responses and pick out the ones that make sense to do.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398751",
"author": "Dino",
"timestamp": "2011-05-27T22:42:34",
"content": "I call BS as well. “What are the three things…” THREE!?? Are you kidding me?? Three things??? HAHAHAHA!!Just look at the video! It’s a metaphor of their current attitude.. first you see her looking directly at you, then, you get a close up of her from the side, as if she’s talking to someone else. Feel alienated? HELL YES!This is a very poor attempt at addressing the total lack of real electronic parts and supplies for the DIY community. It used to be the whole store, now it’s down to a few cabinets with drawers that are usually poorly stocked.I wonder just how many real projects she has built??This will be interesting to follow up on…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398753",
"author": "elephant",
"timestamp": "2011-05-27T22:44:30",
"content": "Sell development kits, microcontrollers and ICs from the 74HC logic family.Also, $2 for an op-amp is ridiculous. Stop marking your stuff up so much. RadioShack has become a highway robbery for parts compared to other suppliers.Partner up with a semiconductor company (like TI or Parallax) to provide cheap access to dev kits and ICs.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398754",
"author": "Mark",
"timestamp": "2011-05-27T22:47:48",
"content": "I’m sure the product they bring in will be some kind of Icrap.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398755",
"author": "boron",
"timestamp": "2011-05-27T22:48:18",
"content": "Knowledgeable staff would be a great addition. I called all 5 of our local radio shack stores last long weekend. I was looking for a crystal, and a npn transistor (very common).Not one person who answered the phone knew what a crystal was, one guy actually suggested I that I call the glass sculpture gift store in the same mall.Only one guy knew what a transistor was, but didn’t bother to check if they were in stock. I found out the hard way after a drive across town. Then he tried to sell me batteries.I stopped into another store on the way back, who also tried to sell me batteries and found the transistor myself despite the employee insisting they had nothing of the sort. Then he tried to sell me batteries.As far as picking a major product that DIYers would love to pick up locally, I think Arduino boards and proto kits would be a hands down favourite.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398756",
"author": "grndplane",
"timestamp": "2011-05-27T22:54:09",
"content": "I think kits and literature is a good place to start. Also a knowledgeable sales person would help.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398758",
"author": "sp00nix",
"timestamp": "2011-05-27T23:01:07",
"content": "Ugh… I miss Radio Shack. I used to be able to walk down around the corner, grab some parts and walk out. Now and then i pop in to grab a switch or some small part and i spend half of my time there shooting down battery and cell phone up sales. It makes it easy to not wanna go back.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398760",
"author": "Taylor Alexander",
"timestamp": "2011-05-27T23:02:14",
"content": "@j_jwalrusExactly what I was going to say!and @MarkIt’s iCrap! The punctuation matters. ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398763",
"author": "poodlepatrol",
"timestamp": "2011-05-27T23:06:23",
"content": "I’ll bite:Arduinos and kits that include loads of projects.Repair kits for common mishaps (eg. mangled cat 5 plugs; broken jack plugs) with associated web links to “how-to” from a video.Project demos, like home improvement store do for specific tasks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398764",
"author": "NXTreme",
"timestamp": "2011-05-27T23:07:05",
"content": "I think it’s a marketing scheme as well, but they’re asking, so I may as well say something.1. More knowledgeable salespeople. I’ve gone in there, asking for this or that, and in the 5+ RadioShacks I’ve been to, only one guy actually knew where what I wanted (LEDs, caps, ect.) was. And he wasn’t even wearing RadioShack branded clothing. Of course, he was the only person I’ve ever seen in RadioShack that actually was using a soldering iron when I walked in!2. More starter kits. Starter kits can really get people interested in things fast, if done right. A Arduino starter kit would really sell well, if done right, because of the wealth of information online. They could buy the Arduinos from a distributer, and sell them at a decent price (say $70 US) along with the basics needed to get started like two motors, a driver shield, a servo, distance sensor and a couple odds and ends. Just enough to build something like the “Start Here Robot” on LMR.3. Just a better assortment of pieces, period. Oh, and decent prices on them too. I’m not gonna pay three dollars for an LED, it’d be cheaper to get one from Digikey and pay $2.50 US shipping (which is an option).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398766",
"author": "Jac Goudsmit",
"timestamp": "2011-05-27T23:09:09",
"content": "I said it before and I’ll say it again: I think RadioShack should start a one-day PCB service. Email or post your PCB design one day, pick them up at the Shack the next day.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398768",
"author": "JJ",
"timestamp": "2011-05-27T23:16:11",
"content": "Is it just me, or is there no place to actually voice my opinion on the “3 things” ? No poll or anything on the blog. Are we supposed to just comment on their Facebook?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398770",
"author": "Andy",
"timestamp": "2011-05-27T23:16:18",
"content": "Taking them at their word, and ignoring the cynical “it’s all a ploy” attitude, what I think we as DIY’ers want would be pretty simple:As others have noted, a good stock of common parts and tools. Lead-free solder. Beyond just caps and resistors, let’s see a better selection of some common logic chips – HC and HCT series gates, shift registers, motor drivers, more in the sensors drawer, microcontrollers of a few flavors and programming tools (AVR, Parallax, Microchip)… breadboards, power supplies, maybe some of the low-end scopes from Rigol or Velleman or USB scopes. The cheap but useful LOGIC analyzer from Saleae… I wind up buying tons of one offs on parts from digikey now because the stuff just isn’t available locally.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398771",
"author": "Maes",
"timestamp": "2011-05-27T23:24:11",
"content": "PCB vending machine… now that would be an idea to explore. Completely automated, holds 5-6 different stock board sizes, takes gerber files as an input and spits out a finished, plated, silkscreened PCB some time later. Since the waiting time would be somewhat long-ish I could see a magnetic card / barcode + PIN authentification system for the customer to pick up his board a few hours later / the next day.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398773",
"author": "Tripointlogic Systems",
"timestamp": "2011-05-27T23:30:50",
"content": "Where else can you go and pay $3.99 for a single 47uF 16v capacitor ?? Lol",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398778",
"author": "Duncan",
"timestamp": "2011-05-27T23:37:41",
"content": "I dislike Radio Shack, their prices are too high. I can buy many, many resistors and a storage bin for them and still save money and have resistor values that I’ll never use. I’m usually up late tinkering and RS is already closed by then, and if I order from Mouser by 8 PM, I’ll have it the next day, and it’s much cheaper….I’ve given up on RS.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398781",
"author": "Chetchez",
"timestamp": "2011-05-27T23:42:52",
"content": "1 Get rid of the RC cars / cheap toys with movie tie ins2 Hire people who have a passion for electronics / DIY or something other than watching ESPN on the TVs. We’ve all heard the unofficial Radio Shack motto “You’ve got questions, we’ve got dumb looks”3 Get rid of the TVs and consumer crap that we can (and do) get a Best Buy for cheaper.4 No, I don’t want a new cell phone or DirectTV. We’ll go to the AT&T or Verizon store for a phone or order it online.5 Carry something other than cheap tools – We’d pay for a better soldering iron if you sold one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398782",
"author": "Joe",
"timestamp": "2011-05-27T23:45:06",
"content": "I agree that it would be great to have a decent selection of parts at the local Radio Shack, like they used to have. However, I don’t think the market can sustain this.Most consumers are just that. They consume and don’t know how anything works, or care to fix it. Throw it out and buy another one is the attitude.As for my three local Radio Shack stores, something has happened in recent months, but I don’t know why. At least two of the managers who have been there for many years are suddenly gone. It makes me think that Corporate forced them out for some reason. Now, one of those managers was a real jerk, but the other was knowledgeable and helpful.Radio Shack was an institution and a favorite place to go when I was growing up. Now I seldom go there, because they have almost nothing I want. I frankly don’t hold out much hope that they will survive another ten years.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398783",
"author": "qwerty",
"timestamp": "2011-05-27T23:47:53",
"content": "Being outside of the US I can’t comment on Radio Shack, but if they’re going the same line as other electronics stuff retailers in other countries then it’s normal. MRC nailed it: a shrinking market and the Internet killed what made those sellers competitive. Why stocking thousands of components that will become obsolete before someone buys them or hire knowledgeable salespeople when one can ask for directions in a forum and buy online?It’s not just Radio Shack, all good old electronics sellers recycled themselves into cellphone shops because not doing so would have killed them even before 2000.The PCB service can be a killer idea but don’t expect them to even consider it unless they smell a hundred customers/shop or more per month, so just forget it. I’m not sure if today PCB milling/engraving/cutting/whatever machines can work completely unattended; adding a guy who can operate such a machine, which costs a lot more than the average drone, could discourage them.Anyway submitting a good idea is still free, so why not?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398786",
"author": "Paul",
"timestamp": "2011-05-27T23:52:41",
"content": "Nothing short of an extremely wide and well stocked selection of electronic parts would ever make me want to step foot inside a Radio Shack ever again.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398788",
"author": "Zapp",
"timestamp": "2011-05-28T00:00:04",
"content": "Advice to “The Shack”: FOAD. And please, do it quietly.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398789",
"author": "xorpunk",
"timestamp": "2011-05-28T00:00:36",
"content": "Poor quality electronics selling for more than the better ones at other retailers..That’s been their MO for 2 decades now.My 0.02: Get with these popular bloggers and vendors and use their marketing before you tank..Also is it me or do they only hires burnouts and child support daddies there? I couldn’t get a job there as a teen but a bunch of morons on the interstate to nowhere can..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398791",
"author": "xorpunk",
"timestamp": "2011-05-28T00:05:29",
"content": "also the lady in the video is soo PR department..and look at the staged store set..nobody is going to buy that stuff for reasons other than that it’s chinese garbage at 2x the cost of quality brands..lol",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398793",
"author": "Elexorien",
"timestamp": "2011-05-28T00:09:20",
"content": "Project enclosures that actually fit the dimensions of the protoboards they sell…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398796",
"author": "matt",
"timestamp": "2011-05-28T00:15:06",
"content": "A good start would be training their employees to NOT joke around, asking if i’m making a bomb every time i walk up to the counter with a handful of parts.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398798",
"author": "mike",
"timestamp": "2011-05-28T00:18:58",
"content": "RS used to carry (maybe they still do?) project lab boards that had an assortment of resistors, transistors, etc. that had little springs for connectors and a book with projects that someone who wanted to learn about electronics could purchase. Maybe they could collaborate with Sparkfun, Adafruit, etc. to come up with some newer project “kits” or “labs” with Arduino, Parallax, etc. that have instructions that could help people with an interest in electronics get started?In addition to some of the above comments, more pieces parts, the vending machine,",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398801",
"author": "dwainedibbly",
"timestamp": "2011-05-28T00:31:39",
"content": "How timely. This happened just this week:Mrs Dibbly has a little LED light with fiber optic strands sticking out of the top. She uses it at her desk. It burns 3 AAs, but who wants to use batteries when it would be easy enough to solder a couple of wires to the contacts and use the wall, right? I have an old wall wart, 5V, so I decide that I’ll buy the opposite connector & wire it to the light. No problem. Send Mrs Dibbly to the Radio Shack. Guy there is absolutely unhelpful. “What’s it for? What’s he making?” etc, etc. After 10 minutes of this it turns out he doesn’t have the part anyway, suggests another RS across town. Forget that. I ordered from Lady Ada and had it in 3 days.It *would* be really good to have a decent selection in-store, but I’m not convinced that this is sincere. I’m not saying I’ll never to in the store ever again, but RS has some work to do.And quit asking for my name, address, etc, all the time. What do I look like, the Unabomber?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398807",
"author": "andar_b",
"timestamp": "2011-05-28T00:44:39",
"content": "Get rid of the phones. We’ll go to a…wait for it…phone store. I don’t know a single person who would go to Radio Shack for a TV or phone, period.Get rid of the low quality toys. Any toys you sell should be 100% hacker friendly or build-from-kit.Get rid of the useless employees, as previous posters have said.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398810",
"author": "bob",
"timestamp": "2011-05-28T00:47:57",
"content": "the problem is they sell the same crap electronics as evry big box store but at an inflated price. i went there to get things i could not get else where locally. i drive to st louis now 30 miles to get what i got at my local r.s. if i want a cell phone i go to sprint. if i want a tv i go to walmart. a computer best buy. what do i go to r.s. for nothing anymore.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398812",
"author": "bob",
"timestamp": "2011-05-28T00:54:00",
"content": "I’d be happy to buy at Radio Shack if they stocked anything I needed and did so at a reasonable price.Brick-and-mortar parts sellers are awesome for the prototyping phase because time is costly and I am guessing from day to day what parts I’ll need. A local source is very helpful.There are a few stores around that “get it” while Radio Shack has not for quite some time.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398813",
"author": "Marco",
"timestamp": "2011-05-28T00:56:28",
"content": "“Would you like to buy a cellphone with this 4 pack of batteries ?”(This really happened!)I don’t mind the mark up, if only they had a selection worth browsing. Cooperating with sparkfun sounds like a pretty good idea. Or at least stock similar products and get rid of the cell phones.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398814",
"author": "MS3FGX",
"timestamp": "2011-05-28T01:03:50",
"content": "Reading some of these comments is hilarious. Stop selling cell phones and consumer electronics? Only hire people with electronics/DIY knowledge? Are you serious?Like already said above, the VAST majority of people are simple consumers. They have zero technical knowledge and have no interest in even replacement parts, let alone actually building something from scratch.Thinking that refocusing Radio Shack on an extreme minority of the customer base is somehow going to make them more relevant than playing to the majority of American consumers is ludicrous.As much as we would like it, there simply isn’t enough demand for a large chain of electronic component/equipment retailers in the 21st century.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398815",
"author": "oldfart",
"timestamp": "2011-05-28T01:08:24",
"content": "Simply get Radio Shack to become a reseller of Jaycar Electronicshttp://www.jaycar.com.auThey have international presence and meet a good halfway point between retail and die-hard hobbyist. For less fluff, and more die-hard, tryhttp://www.altronics.com.auWe haven’t forgotten how to have fun with hot bits.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398816",
"author": "cknopp",
"timestamp": "2011-05-28T01:08:26",
"content": "As a current store manager, I whole heartedly concur with you guys spreading this like wildfire.We now have an accountant CEO instead of the solid stream of Marketing CEO’s, and dollars make sense to this man, Jim Gooch.We were told to reset our stores in anticipation to this influx, so it is the real deal.But please be kind… Help the stores that are there to help you. It is all well and good to add 3000 SKU’s to the stores, but you need to buy locally. Also drop a line about outdoor signage… From cellular to HaD emblems, I would love some kind of outside presence…Be specific as possible. Exact components, manufacturers, parts, small assemblies, everything. If you will shop at RS instead of mail order, you can have it all for a very long time.If anyone is near Turkey Creek in Knoxville, stop by and say HI!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1695760",
"author": "TNNinjaGirl",
"timestamp": "2014-08-07T13:51:47",
"content": "I stopped by the Turkey Creek store yesterday and was not particularly impressed but I guess it wasn’t terrible. I was asked for assistance and out of habit I said “No, thank you. I’m just looking.” I wonder over to the parts section to search for an Arduino. To my amazement there was a spot for it. To my horror there was not one there. I asked the employees there if may be an Arduino in the back and one replied “No, we keep all of our stock up front…”Ok, fine. I go to the Clinton Highway store. The store manager there asks if I need help and I say “I’m looking for an Arduino Uno.” To which she replies, “What is that?” I said “nevermind” and found one myself. She did ask me how I liked my cell phone plan which I guess was nice….??? (lady I’m buying an Arduino. If you knew what that was you’d know the buyer probably has a basic understanding of cutting edge technology and most likely A) has a phone and plan they like and B) wouldn’t buy it from RadioShack)I’m not sure if the employee at the Turkey Creek store knew what I was talking about or not but he did seem more pleasant than the manager at Clinton Highway. I wasn’t looking forward to the trip and I hope I don’t really ever have to go again. I usually get my small parts from Shields over off of Middlebrook and will probably continue to do that from now on as they have always had impeccable customer service.Really, who doesn’t know what an Arduino is?",
"parent_id": "398816",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "398817",
"author": "AussieTech",
"timestamp": "2011-05-28T01:11:29",
"content": "RadioShack operated in Australia as Tandy. They sold grossly overpriced worst quality components from day one, were staffed by people who didn’t know their arse from their elbow, and are thankfully now a rapidly fading (bad) memory.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398822",
"author": "Tech B.",
"timestamp": "2011-05-28T01:21:47",
"content": "The last time I went to the local RS the asked if I needed help, I said I was looking for a PIR module; they responded, “is that a new IPhone add-on or something?” Then proceeded to ask me 7 times to buy batteries. Literally 7 times. I cursed the idiot, who by the way kept glancing at the TV that had some basketball game playing. I will never ever go back to a RS again. The manager didn’t even know what a transistor was…..As for what I would like to see sold there, I would like to see them sell ice cream. At least they might know what ice cream is, and would be the only reason I ever step foot in the shit hole they run.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1060636",
"author": "Bob",
"timestamp": "2013-09-18T17:38:34",
"content": "It’s kinda hard to blame the employees, since RS just hires drones now–they know nuth’n else BUT to sell phones and batteries. Altho it doesn’t surprise me that they pestered you that much just to sell you batteries. I’ll bet that sales guy won’t be there next time you go. RS has a BIG turnover of staff these days. It’s daunting to go in RS now. They’ll NEVER change.",
"parent_id": "398822",
"depth": 2,
"replies": []
}
]
}
] | 1,760,377,181.530967
|
||
https://hackaday.com/2011/05/27/music-tank-puts-the-boom-in-boombox/
|
Music Tank Puts The Boom In Boombox
|
Mike Nathan
|
[
"Musical Hacks"
] |
[
"audio",
"batteries",
"music",
"solar",
"tank"
] |
When you think of Memorial Day weekend, what comes to mind? Well around here, all we can think about is
this tank cum boombox
that Instructable user [Elian_gonzalez] put together.
This build is actually the third version of his Music Tank, and it comes with all sorts of improvements over previous models. The tank is primarily constructed out of plywood, with cavernous compartments for holding all of its goodies. In its capacious body, the tank sports a 60 Watt stereo system that powers a pair of external speakers mounted on either side of the turret. The turret itself contains an air-powered cannon built from PVC tubing, which we imagine can be used to shoot a multitude of different projectiles.
While the concept itself is pretty cool, the tank happens to be nearly self-sustaining as well. The tank has a pretty deep battery well and uses a 50w home made solar panel to help keep things topped off while in use. [Elian] does not specify a total running time, but we imagine that it can go for hours on a nice, sunny day.
Keep reading to see a long video walkthrough of the Music Tank MK3 in action.
[youtube=http://www.youtube.com/watch?v=_1Rrjm9JhXQ&w=470]
| 7
| 7
|
[
{
"comment_id": "398674",
"author": "kobilica",
"timestamp": "2011-05-27T20:17:42",
"content": "So if 60watt usage + 50watt addage = 10watt usage… nice, but i believe 60watt stands for rms.still frickin nice, i’d own one",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398696",
"author": "bbbbbbill",
"timestamp": "2011-05-27T20:59:19",
"content": "Freudian slip?Awesome project, btw",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398731",
"author": "NishaKitty",
"timestamp": "2011-05-27T22:15:20",
"content": "this tank “cum” boombox…. Am I missing a joke here ;p",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398799",
"author": "beenareeno",
"timestamp": "2011-05-28T00:21:04",
"content": "C’mon people! Get your mind out of the gutter!Cum–prepositionwith; combined with; along with (usually used in combination): My garage-cum-workshop is well equipped.Origin:1580–90; < Latin: with, together with (preposition)Apparently this word is nothing new.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398831",
"author": "The Best Electronic Stock",
"timestamp": "2011-05-28T01:37:49",
"content": "i believe 60watt stands forms.missing a joke here",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399015",
"author": "patman2700",
"timestamp": "2011-05-28T08:11:41",
"content": "Cool invention.I don’t want to come off as too critical, but what does it actuallyDO?I get that it plays music through two side-mounted speakers; a simple plywood boombox with a battery, amplifier, and pair of speakers can do that. I just don’t see the relation between a battery-powered music system and a non-self-propelling tank shell.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399149",
"author": "mic",
"timestamp": "2011-05-28T14:14:44",
"content": "Oh noes you can’t send poor Elian back to his father in a communist dictatorship!!! Oh noess",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,181.439952
|
||
https://hackaday.com/2011/05/27/64-bit-os-written-entirely-in-assembly/
|
64-bit OS Written Entirely In Assembly
|
Brian Benchoff
|
[
"Software Hacks"
] |
[
"64bit",
"operating system"
] |
The folks at Return Infinity just released a new version of their
BareMetal OS
, a 64-bit operating system written entirely in assembly.
The goal of the BareMetal project, which includes a
stripped-down bootloader
and a
cluster computing platform
is to get away from the inefficient obfuscated machine code generated by higher level languages like C/C++ and Java. By writing the OS in assembly, runtime speeds are increased, and there’s very little overhead for when every clock cycle counts.
Return Infinity says the ideal application is for high performance and embedded computing. We can see why this would be great for really fast embedded computing – there are system calls for networking, sound, disk access, and everything else a project might need. There’s also ridiculously small system requirements – the entire OS is only 16384 bytes – lend itself to very small, very powerful computers.
With projects that are computationally intensive, we think this could be a great bridge between an insufficient AVR, PIC or Propeller and a full-blown linux distro. There’s just some questions about the implementation – we feel like we’ve just been given a tool we don’t even know when to use. Any hackaday readers have an idea on how to use an OS stripped down to the ‘bare metal?’ What, exactly, would need 64 bits, and what hardware would it run on?
Check out the Return Infinity team calculating prime numbers on their BareMetal Node OS after the jump.
[youtube=http://www.youtube.com/watch?v=ccLef8GLl6g&w=470]
| 112
| 50
|
[
{
"comment_id": "398611",
"author": "sp00nix",
"timestamp": "2011-05-27T18:33:13",
"content": "180 amps!!!! Im sure he meant watts :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398612",
"author": "razor",
"timestamp": "2011-05-27T18:33:14",
"content": "How about for Rainbow Table Generation, Key Hacking, RSA Hacking, SSL Hacking, Crypto functionality using algorithms that use 64-bit int’s at their core, like ThreeFish or SHA-384/512",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398613",
"author": "Sstsalazar",
"timestamp": "2011-05-27T18:36:12",
"content": "Now that is interesting, they developed something that is not only amazingo but a great learning tool",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398615",
"author": "Colecoman1982",
"timestamp": "2011-05-27T18:37:21",
"content": "I can’t really speak from experience, but I do know that lots (if not most) of scientific computing requires 64-bit precision. I remember hearing that it was one of the early stumbling blocks for using GPUs in reseach calculations.If they could get one, or both, of the high-end video card makers on board to either make GPU drivers for BareMetalOS, or to provide the BareMetal guys with enough technical data to make their own, then this might allow for even more performance to be squeezed out of clusters built from x86 PCs with GPUs installed on them. Also, this might allow for faster clusters designed for solving problems that aren’t well suited for being run on vector processors like GPUs.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398616",
"author": "Doc",
"timestamp": "2011-05-27T18:37:29",
"content": "I suppose this makes sense to me for embedded system applications that require a fair bit of high-precision math – I’m thinking video processing. So maybe useful for a rover or something.Still, I’m a bit confused as hardware’s fairly cheap. I guess if I were building something to leave the planet, I’d be interested in this kind of thing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398617",
"author": "haybales",
"timestamp": "2011-05-27T18:38:43",
"content": "If only consumer OS’s were programmed from the ground up like this…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398618",
"author": "Corwin",
"timestamp": "2011-05-27T18:44:11",
"content": "I’ve been thinking about tackling a BitCoin miner on this platform. Without the overhead might be able to get some decent performance. Although GPU mining would likely still out pace it by a good amount.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "549872",
"author": "Tgwizman",
"timestamp": "2012-01-03T11:26:11",
"content": "I would love to have a copy of your miner once you’ve got a working model! :D",
"parent_id": "398618",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "398619",
"author": "Burzmali",
"timestamp": "2011-05-27T18:45:05",
"content": "Keep in mind that the moment you cut straight to assembly, you make yourself platform dependent. Different processor? You could very well have to recode half your project.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6148999",
"author": "Jay Craswell",
"timestamp": "2019-05-13T23:40:40",
"content": "Its a poor reason now when everything is intel based. When you had PDP8, 11, SYSTEM 360,8008, (8080, 8085, Z80) 68000, 6805, 6800, 32000, 68HC05, eclipse, vax, etc you could use that as an argument. The problem with portability is that nothing ever really was all that portable. When you moved your operating system from a 68000 to VAX or whatever you had to write all the device dependent code for that machine. And nothing was the same as far as keyboards, display, I/O etc. The “Abstration” layer meant you had to have serious programmers doing all the hardware devices (in assembler) and then i/o it with the slower then hell programming language of the day. Which never was the same between versions. The syntax changed. You have “quick” versions, “Visual” versions and then new compilers so C went another abstraction layer of slowness to C++, then C# where it was really slowed down. There were other languages like PL/I, Basic, Cobol, Fortran, Agol, Lisp etc that some people had a lot of code invested in. More and more people knew less and less about how anything really worked and just cut and pasted crap code that someone else wrote. Then to retain compatibility all the old routines and bugs had to be retained when some idiot decided there ought to be another layer of abstraction.",
"parent_id": "398619",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "398621",
"author": "Stan",
"timestamp": "2011-05-27T18:46:52",
"content": "Perhaps it could be used as an RTOS for applications that require such a system like avionics and flight controls.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398622",
"author": "Verimius",
"timestamp": "2011-05-27T18:49:07",
"content": "Reminds me of what was said about the first laser invented in 1960: “A solution looking for a problem.”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398626",
"author": "razor",
"timestamp": "2011-05-27T18:59:11",
"content": "Someone mentioned to me when I mentioned this article to him: data processing for genomics and bio-modeling, you could use this doing base mathematical number crunching and 3D modelling as headless boxes that feeds the data back to a central server or machine that the scientist/physicist/astronomer/lab tech could actually interact with. They’ve made virtual universes for testing dark matter theory in server farms of 2000+ boxes running probably SUN Solaris or something for over a month to run one simulation of gravity models.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398628",
"author": "Deg",
"timestamp": "2011-05-27T19:12:33",
"content": ">>Any hackaday readers have an idea on how to use an OS stripped down to the ‘bare metal?This is why people take Computer Engineering :PI do wonder what computer advantages you gain versus a cluster of linux boxes; couldn’t you feasibly write code as a kernel module to gain a comparable hardware interface? (Not a CEng!)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398629",
"author": "h4xorX",
"timestamp": "2011-05-27T19:15:14",
"content": "So much could be done with this system! System could be used for robotics applications where high bandwidth data streams are in demand, i.e. robotic vision and ai, precise servo movement calculations, UAV auto-navigation and video streaming to operator. 64 bits of precision may also be used to reduce computational time and achieve higher accuracy in Finite Element Analysis/Modeling for Mechanical/Electrical/Physics simulations!Customize rendering algorithms – assemble multiple BareMetalOS Boxes for better graphics rendering, like real-time ray tracing! (Maybe just a dream)I haven’t looked at the specs in detail, but if BareMetalOS gives you hardware level control, why not experiment with linking multiple motherboards together over SATA? You can achieve higher bandwidth communications than with networking (4Gbps vs 10/100/1000 Base T) schemes and avoid network traffic. Massively Parallel Processing to the extreme – and is available to the public! Yeehaw people!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398631",
"author": "MrX",
"timestamp": "2011-05-27T19:21:57",
"content": "There is also MenuetOS which even has a GUI:http://www.menuetos.net/and comes in 32 and 64 bit flavors",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398633",
"author": "synergy",
"timestamp": "2011-05-27T19:22:59",
"content": "in the video, why does he want to “1” (the number) to primes, as far is I know 1 is NOT a prime?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398639",
"author": "IceBrain",
"timestamp": "2011-05-27T19:27:44",
"content": "I don’t get people here. Overhead? What overhead? When have you seen the kernel actually take a reasonable amount of CPU time in any modern (say, +1GHz) CPU?This may be useful for embedded devices, but for a decent machine the overhead is negligible. Of course, most embedded CPUs aren’t 64-bit either, so this is kind of limited. Especially since they programmed against x86 and not ARM.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398644",
"author": "Solder_guy",
"timestamp": "2011-05-27T19:34:09",
"content": "I wander if you can put this in a linksys WRT54G router?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398645",
"author": "Aaron",
"timestamp": "2011-05-27T19:37:24",
"content": "haybales: …they’d cost $10,000 per license and see one update per decade if we were very lucky.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398646",
"author": "h4xorX",
"timestamp": "2011-05-27T19:40:52",
"content": "@IceBrainThe overhead due to an OS is essentially negligible for one computer, i.e. calls to the processor from background programs do not inhibit performance of your main application. Like watching a Youtube video and having a chat client up. However, if someone builds a computational cluster, overhead due to an OS scales with the number of nodes used. So, in the movie industry where 1,000’s of nodes are used to process/render scenes where it may take hours to compute a frame, take that almost negligible OS overhead multiply it by 1,000 nodes and observe more inefficient computational time that may translate to lost money.In addition, a high performance compute application typically requires a central location to store finished data, in which case hard drives at each node are a non-essential to the application. They are then a waste of space and since they require power to idle they waste money. Again, multiply the power used by each hard drive at each node by the number of nodes and here is wasted electricity that converts to wasted dollars.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398669",
"author": "Anne Nonymous",
"timestamp": "2011-05-27T20:06:11",
"content": "What we need for comparison, is an OS written in Java, running on a Java interpreter written in Java.If Java is half as fast [or faster] as people make it out to be, it would be the optimum solution.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398672",
"author": "Hanswurst",
"timestamp": "2011-05-27T20:14:35",
"content": "This is useless except for fun.OS overhead is not a problem in HPC and noone has the time to write apps in assembler.Also not having a real scheduler means that you can not have more threads than cores, which is really useful to keep the cores busy while waiting for data.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398676",
"author": "Dave M",
"timestamp": "2011-05-27T20:24:06",
"content": "All early operating systems were written in assembly language. IBM, CDC, DEC, CRAY, etc. Unix caught on because people realized that their software investments could outlive whatever proprietary CPU and operating system they were using.If you are going to do floating point calculations all day long you won’t be spending much time *in* the OS kernel. So kernel performance isn’t that big a deal. Think applications like inter-process communications, networking applications that saturate the box with packet arrivals and context switches, etc. But apparently it doesn’t actually have a working TCP/IP stack yet… Oops, the reference TCP/IP implementation is written in C.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398677",
"author": "xorpunk",
"timestamp": "2011-05-27T20:26:50",
"content": "IceBrain most of them don’t know what PE and ELF are either..or how stacks machines work..do something productive..let me know when they does what a compiler or kernel does more efficiently..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398678",
"author": "Blue Footed Booby",
"timestamp": "2011-05-27T20:30:52",
"content": "There are really good reasons modern operating systems aren’t written in assembly. If you don’t know what they are, you really shouldn’t be doing any assembly programming.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398692",
"author": "Erich",
"timestamp": "2011-05-27T20:49:12",
"content": "I remember coding Conway’s life in turbo pascal for a 10MHz 286. I was getting one screen refresh every 30 seconds running under DOS.I redid it in assembler using the 80×25 character video RAM itself as the memory structure (array) for the program. I got 15 iterations per second, and then 45 per second when I ran it on a DX4-100.So, there you have it, everyone need look no further for the problem supposedly awaiting this solution….:-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398694",
"author": "Munch",
"timestamp": "2011-05-27T20:50:36",
"content": "@Blue Footed Booby — No, sorry, I utterly disagree. If you don’t know what those reasons are, then you *SHOULD* be doing more assembly. That’s the only way they’ll learn.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398695",
"author": "Munch",
"timestamp": "2011-05-27T20:52:25",
"content": "(That being said, I love assembly language coding. It’s fun and challenging. And, with the right libraries, just as productive as C or other languages. But, if you have said libraries, you’re already basically coding in C or other said languages, but with a different syntax. So you might as well code in C or said languages to begin with, and skip the learning curve.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398698",
"author": "am_i_evil",
"timestamp": "2011-05-27T21:02:12",
"content": "@Anne Nonymous –“Java” is a thing which comes in many profiles and environment. You can not benchmark “it” any more than you can benchmark Windows or Linux while not specifying what hardware you are testing.Java does not provide OS level services either. It’s an abstraction layer which depends on them.There is a Linux BIOS project which basically produces a less bare-metal, yet still stripped down OS service.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398707",
"author": "Decius",
"timestamp": "2011-05-27T21:24:20",
"content": "I know this is a 64bit written OS, but if I had the ‘know how’ I’d easily run this on the PSP with it’s 333MHz CPU and 64MB of Ram which should be plenty in running a small a distribution.Sadly, the only project that Linux has seen on the PSP is the poorly done uClinux port which doesn’t really utilize anything :/*wishes I was smarter*",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398708",
"author": "digitlworld",
"timestamp": "2011-05-27T21:26:45",
"content": "I just want a consumer-level bare-metal hypervisor so I can stop VMing in a slower host OS.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "398986",
"author": "Max",
"timestamp": "2011-05-28T06:47:15",
"content": "Get esxi 4.0. It was free and is now the future of vmware and costs money in 4.1",
"parent_id": "398708",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "398710",
"author": "fdawg4l",
"timestamp": "2011-05-27T21:30:24",
"content": "@haybales – You’d see a lot more bugs. When was the last time you saw a compiler bug cause an application to crash? Or even a kernel to Oops?Also, debugging assembly (machine code) isn’t the same as running your friendly debugger on a corefile. I dont know what tools they provide, but the reason for higher level languages is to make this bug-find-and-fix problem a little easier to live with.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398711",
"author": "z",
"timestamp": "2011-05-27T21:31:12",
"content": "I fail to see any value in writing an embedded OS in assembly for x86. This is like buying a Bugatti Veyron for your grocery trips.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398713",
"author": "Mark",
"timestamp": "2011-05-27T21:32:30",
"content": "They promote it for HPC usage? What the HPC area doesn’t need is yet another platform that will be unmaintained in 20 years time. There is a reason why the HPC world have OpenMP and MPI. HPC programs tend to live forever if they are doing something useful.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398717",
"author": "Benny",
"timestamp": "2011-05-27T21:39:02",
"content": "The guy just stumbled upon a bug in wolfram alpha. 1 is not a prime number =)",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "2551772",
"author": "Kyt",
"timestamp": "2015-05-03T18:31:06",
"content": "If I understood the parameters right, the program he used incremented by two, thus it would have skipped 2. Therefore, his program (mistakenly) had to identify 1 as prime to get the true number, as it missed a prime. Wolfram Alpha would have given the correct answer, as it most likely did not skip 2 and correctly identified 1 as non-prime.",
"parent_id": "398717",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "398726",
"author": "Zmaster",
"timestamp": "2011-05-27T21:59:27",
"content": "I agree with IceBrain, despite the fact that actually any OS contains pieces of assembly, this is just pointless for computation because the overhead is minimal.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398745",
"author": "xrazorwirex",
"timestamp": "2011-05-27T22:34:21",
"content": "Someone needs to figure out how to use this to generate bitcoins.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398748",
"author": "Ugly American",
"timestamp": "2011-05-27T22:41:12",
"content": "Classic assembly OSs like MULTICS and the Burroughs MCP (of TRON fame) had huge advantages in that they were written on CPUs designed with multitasking, multiple users and networking in mind.What people need to realize is that decades ago a MULTICS machines could be physically taken apart while users were logged in, moved part by part to another location and reassembled – all without the users knowing.The popular modern systems are driven by economic utility to the sellers (proprietary lock in) not technical merit or good engineering principles.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398784",
"author": "Vince",
"timestamp": "2011-05-27T23:49:23",
"content": "@IceBrain: There is tonnes of overhead in modern O/S Even with a really optimized O/S in modern terms you are using a few hundred MB of memory for holding the O/S and all the data associated. Then there are the tens of thousands of clock cycles being used to monitor user input, sensors, memory management, hard drive activity. When you strip all of that out you have the ability to perform more calculations per second, thus making it better for numeric calculations. The only reason you don’t notice the overhead is because as CPU power increases the necessary clock cycles are a smaller percentage of the whole.I think this would be a great application for cluster calculations, like rainbow tables or video processing, but there needs to be a lot more development and interaction with the orchestrator, but very cool.And really, I think the true spirit of hacking is captured when someone does not ask “Why would you want to do that” and instead “Why wouldn’t I want to do that”.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398785",
"author": "supershwa",
"timestamp": "2011-05-27T23:52:14",
"content": "A 16k OS? Sweet! Should turn some heads in the field!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398795",
"author": "MrX",
"timestamp": "2011-05-28T00:12:42",
"content": "@American I totally agree. Most of this situation was caused by the abusive Microsoft monopoly. IMHO, Microsoft did more damage to the technological evolution than good.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398824",
"author": "mstone",
"timestamp": "2011-05-28T01:24:47",
"content": "The value of simple assembly code is inversely proportional to the length of your CPU pipeline. The longer your pipeline, the more it hurts to handle branches the ‘simple’ way.Say you have a piece of code that checks a bit and executes routine A on a 1, routine B on a 0, then returns and does some other math with the results. Following that path directly is fine if the CPU completely executes one instruction before starting the next, but practically no CPU does that any more.. they break the execution process into stages, and execute them in parallel.The classic RISC pipeline is 5 stages long: fetch the next instruction, decode it, execute it, do memory I/O, then do register I/O. If we have to wait for the conditional to decide what the next instruction will be, it means there will be at least four empty slots in the pipeline. The first instruction of routine A or B won’t happen until at least 4 clock cycles after the conditional.Microcontrollers like the AVR and PIC have short pipelines — only 2 stages — so that doesn’t hurt too much.The IA-64 architecture, OTOH, has a 10-stage pipeline. It also has 30 execution units divided into 11 different groups, and its fetch mechanism can feed 2 instructions into the pipeline per cycle. The challenge is to keep them all working efficiently at once.For that architecture, it would be more efficient to load both routine A *and* routine B into the pipeline before the conditional even finishes executing. That way, at least the one you need will be ready to go by the time you decide which branch to take. The CPU will just drop the branch that wasn’t chosen, but that doesn’t cost any more than letting those units sit idle while you waited for the conditional. It would also be more efficient to pipeline any code that follows the call to A/B that can be executed independently of A/B, or which can treat the result of A/B as a value in register R.Point is, compilers don’t produce convoluted assembly code because the back-end programmers were dumb, and ‘simple’ isn’t necessarily a virtue when you have multiple paths of parallel execution.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398832",
"author": "The Best Electronic Stock",
"timestamp": "2011-05-28T01:38:09",
"content": "I remember hearing that it was one of the early stumbling blocks for using GPUs in reseach calculations.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398839",
"author": "zdavkeos",
"timestamp": "2011-05-28T01:43:34",
"content": "Just thought i’d mention that you can write your applications in c/c++, you are not limited to assembly. Just because the os and libs are written in assembly doesn’t mean that you are limited to assembly.I have it fired up in qemu, and it is a pretty fun toy.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398850",
"author": "Charles Shults",
"timestamp": "2011-05-28T01:56:32",
"content": "Okay, let’s think about it. You can use this incredibly small, fast OS to create whatever you want, because you could write a C compiler very easily. If you can’t, then you are not in a position to really see the advantages first-hand. And, C is portable and this implementation would be absolutely phenomenal for writing AI algorithms, code crackers, emulators, etc. I would love to have a plain vanilla OS for the best multi-core processor that supported little more than DOS and C. The things you could do with it!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398855",
"author": "MattE",
"timestamp": "2011-05-28T02:04:40",
"content": "First up, this project is brilliant (I like it), but the comments here have been really out-there. Writing a whole OS in assembler is fun and a useful thing to do as a learning tool, but for people arguing “oh but it’s faster!” for production use: I remain unconvinced that any speed advantages aren’t far outweighed by problems; portability (see next point), maintainability, etc.The people wanting to run this on their PSP/ARM board/Car ECU are both hitting the nail on the head — good luck, x86-only and realistically cannot be ported without a total rewrite — and sh1t out of luck.The people arguing that old mainframes had OSes written in assembler are ignoring the reasons: saving every byte was crucial when you had 2MB of memory and it cost you $2M, and old compilers were awful.Anyone wetting themselves about the newfound possibilities of your x86 machine running this — ZOMG I can calculate X now, I couldn’t before! — probably doesn’t realise how little overhead running, say, Linux has. You will not suddenly get a 50% performance boost by not running an OS written in C. You will not suddenly get “more precise calculations”; you’ll find your FP is exactly as accurate as it used to be and if you find you now can do 64bit integer stuff on your x86-64, you were running the wrong 32bit-only kernel before.Yes, GCC et al aren’t perfect. If you’re really concerned about your algorithm’s speed, write the core algo (and no more, go read Knuth) in assembler in userland AND hack on GCC to improve it. This is not the same as writing your OS in assembler. If your OS and compiler really do add lots of overhead, *fix them*, as they shouldn’t.HPC is more than just performance; OSes like Linux have necessary things like clustered filesystems, varied I/O (anyone want to write a FC/Infiniband driver for this asm OS?), and god forbid, compilers. Even FORTRAN. ;-)Rant almost over: Some of the memory footprint comments are both exaggerated and not as much of an issue as you make out. I don’t see HPC vendors desperate to reduce their kernel footprint from a few tens (yes) of MB to a few tens of KB. There are comments about your OS wasting cycles on managing devices, etc. Are you suggesting your OS polls all of your devices just for fun? If your OS is spending cycles managing your disc controller it is because, and only because, there is something disc-related that needs to be done! Whether your OS is baremetal or not, your data isn’t going to come off disc without you asking for it. The percentage of time “wasted” by this code being written in C is tiny, and the percentage of time your processor spends doing this is tiny, resulting in tiny^2 time wastage having a C driver doing this. I would much prefer my SATA driver/precious filesystem runs 0.1% slower if it’s less buggy!Wait, not quite over: In many HPC scenarios your application code (be it hand-written assembler, C or FORTRAN, depending on how much of a pervert you are) is running on your CPUs 100% of the time; your I/O will often be separated on different nodes to the computational nodes. Before someone complains about a 100Hz tick interrupt reducing the number of L33t Algorithm Cycles available to play WoW via a neural net, on many systems you may experience NO IRQs unless you want them. (E.g. IRIX has a “switch scheduling tick off” syscall ;-) ) Tickless kernels, huge pages, pinned CPUs, your working set fully RAM-resident; at this point your OS may as well be written in BASIC because it’s having to actually do anything while your application runs :P :) Plus, you won’t have to spend thousands of personyears writing drivers for all the hardware you need to use.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398857",
"author": "Jonam",
"timestamp": "2011-05-28T02:10:02",
"content": "Then there’s Kolibiri OS, a Russian developed system that’s been around for years and written entirely in assembly too:http://kolibrios.org/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398877",
"author": "M4CGYV3R",
"timestamp": "2011-05-28T03:08:46",
"content": "@mstone: It’s easy to handle race conditions like that with clever programming. Without having seen the code for this, I think that is likely one of the things they handled in this OS. It’s a pretty basic consideration in programming for a thread-capable architecture.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398888",
"author": "Irish",
"timestamp": "2011-05-28T03:57:41",
"content": "I’ll bet SETI could think of a few thousand signals to crunch with this.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398899",
"author": "TheInternet",
"timestamp": "2011-05-28T04:14:55",
"content": "Cool project, good learning experience, and somewhat useful.The problem is who is going to write applications for this, assembler has one hell of a learning curve and most modern programs are written in C/C++.If they want this thing to be used much, they need to port glibc or newlib to it. I would replace several virtual machines with it if they did. (I am only assuming they haven’t at this point.)I tried writing my own OS, and it’s a lot of fun and I imagine they do it more for fun than they do for some made up overhead and computational power reasons.For embedded though this is useless. 64bit x86 processors?! Embedded in what? A space shuttle?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398922",
"author": "FedeOrtiz",
"timestamp": "2011-05-28T04:42:07",
"content": "Great Project!! As many have said before it’s fantastic for learning purposes but may very well never find a real industry use.Either way, just great that someone took the time end effort to program, document and SHARE IT!!So thank you guys at Return Infinity! ;)",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,181.768022
|
||
https://hackaday.com/2011/05/27/chipkit-uno32-first-impressions-and-benchmarks/
|
ChipKIT Uno32: First Impressions And Benchmarks
|
Phil Burgess
|
[
"Arduino Hacks",
"Featured",
"Microcontrollers",
"Reviews"
] |
[
"32-bit",
"32bit",
"adc",
"arduino",
"bottleneck",
"chipkit",
"digilent",
"fractal",
"ide",
"lcd",
"mandelbrot",
"max32",
"pic",
"pic32",
"serial",
"uno",
"uno32"
] |
Following
Maker Faire
, we’ve had a few days to poke around with Digilent’s 32-bit
Arduino-compatible chipKIT boards
and compiler. We have some initial performance figures to report, along with impressions of the hardware and software.
Disclaimer: Digilent has provided Hack a Day with Uno32 and Max32 boards for evaluation.
chipKIT isn’t the first attempt to extend the Arduino form factor to a 32-bit microcontroller core…other products such as
Maple
,
Netduino
or the FEZ Domino have been around for well over a year…but the chipKIT boards are notable for the effort Digilent has put into creating a seamless transition. The aim is to create a single unified tool both for traditional 8-bit Arduino boards and Digilent’s 32-bit work-alikes, where the same IDE, the same code, and a good number of the same shields can all work despite the different underlying architectures. In fact, they’re hoping the Arduino project accepts their integration method as an official means of adding new hardware to the Arduino IDE — not just for their own product, but for anyone else to use as well.
As noted in
our prior report
, we were impressed that they do appear to deliver on this promise. The transition between “classic” Arduinos and the 32-bit boards is indeed quite slick. But we’re finding at this early stage that there are still some rough bits to be worked out. So, for the time being, we’re keeping both the Arduino IDE and Mpide (Digilent’s multi-platform derivative) installed on the development system; the latter has not yet obviated the need for the former. But we see how the concept is supposed to work, and we like it.
For the most part, Mpide works as intended as a dual-platform IDE. Just select the appropriate device from the Tools->Board menu, recompile, and the code is now ready for the corresponding chip. But a couple things have bit us in the rear:
The
AVR compiler
in Mpide either isn’t fully optimizing, or the floating-point libraries were built sans optimization or something. This threw off our benchmark numbers initially — the results were atrocious! In order to keep the numbers realistic, we’re using the standard Arduino IDE for the corresponding benchmarks. To be fair, they did warn us about this performance issue in person at Maker Faire, but until it’s fixed they could be more forthcoming about it with some documentation or on the web site…otherwise it could look like they’re trying to skew benchmarks more in their favor.
The String() constructor is borked when handling integers. The following line compiles fine for AVR chips, but throws a tizzy fit with the PIC32 compiler:
String foo = String(42);
Given that the IDE was wrapped up literally hours before going live online and at Maker Faire, it’s understandable that there are some loose ends. Just be prepared as an early adopter that this won’t be as pain-free a transition as they’re aiming for. The great thing with
open source
is that we can get in there, spot such problems, and offer suggestions and submit fixes…the situation will no doubt improve with time.
Some Benchmarks
We wanted to create a fractal demo similar to what they were displaying at Maker Faire. We didn’t have the spiffy
SparkFun Color LCD Shield
on hand, so instead we had to settle for a serial LCD,
4D Systems’ uLCD-144
. This does affect the numbers somewhat, as we’ll see.
In MIPS alone, the chipKIT should beat the Arduino by a factor of five. Then there’s the native 32-bit-ness of it: when dealing with larger numbers, the AVR processor at Arduino’s core has to shift and fiddle bits between consecutive 8-bit values in order to achieve 32-bit results. So the PIC32 should show a considerable performance benefit beyond MIPS alone. In practice, this doesn’t always pan out.
The uLCD-144 is a 128 by 128 pixel 16-bit color
LCD
with a serial UART interface running at 115,200 bits per second. The graphics commands aren’t terribly efficient, and it’s necessary to send a five byte packet for every pixel drawn. This includes coordinate data; there’s no block write function in serial mode. On the plus side, it’s easy to talk to using the Arduino or chipKIT’s native serial UART.
Here’s the code for the Mandelbrot sketch, using floating-point math:
/* Simple Mandelbrot set renderer for Arduino vs. chipKIT benchmarking
w/floating-point math, via www.hackaday.com. This example uses the
4D Systems uLCD-144(SGC) serial display module, wired as follows:
uLCD Pin: RES GND RX TX VIN
Arduino Pin: 2 GND 1 0 5V */
const int
pixelWidth = 128, // LCD dimensions
pixelHeight = 128,
iterations = 255; // Fractal iteration limit or 'dwell'
const float
centerReal = -0.6, // Image center point in complex plane
centerImag = 0.0,
rangeReal = 3.0, // Image coverage in complex plane
rangeImag = 3.0,
startReal = centerReal - rangeReal * 0.5,
startImag = centerImag + rangeImag * 0.5,
incReal = rangeReal / (float)pixelWidth,
incImag = rangeImag / (float)pixelHeight;
void setup()
{
pinMode(13,OUTPUT); // Arduino status LED
pinMode(2,OUTPUT); // LCD reset pin
digitalWrite(13,LOW); // LED off
Serial.begin(115200);
digitalWrite(2,LOW); // Reset LCD
delay(10);
digitalWrite(2,HIGH);
delay(2000); // Allow time for reset to complete
Serial.write(0x55); // Issue auto-baud command
while(Serial.read() != 0x06); // Wait for ACK
}
void loop()
{
unsigned char cmd[20]; // Serial packet for LCD commands
int x,y,n;
float a,b,a2,b2,posReal,posImag;
long startTime,elapsedTime;
Serial.write(0x45); // Clear screen
delay(100); // Brief pause, else 1st few pixels are lost
cmd[0] = 0x50; // 'Pixel' command is issued repeatedly
digitalWrite(13,HIGH); // LED on while rendering
startTime = millis();
posImag = startImag;
for(y = 0; y < pixelHeight; y++) {
cmd[2] = y; // Y coordinate of pixel
posReal = startReal;
for(x = 0; x < pixelWidth; x++) {
a = posReal;
b = posImag;
for(n = iterations; n > 0 ; n--) {
a2 = a * a;
b2 = b * b;
if((a2 + b2) >= 4.0) break;
b = posImag + a * b * 2.0;
a = posReal + a2 - b2;
}
cmd[1] = x; // X coordinate of pixel
cmd[3] = n * 29; // Pixel color MSB
cmd[4] = n * 67; // Pixel color LSB
Serial.write(cmd,5); // Issue LCD command
posReal += incReal;
}
posImag -= incImag;
}
elapsedTime = millis() - startTime;
digitalWrite(13,LOW); // LED off when done
// Set text to opaque mode
cmd[0] = 0x4f;
cmd[1] = 0x01;
Serial.write(cmd,2);
// Seems the chipKIT libs don't yet handle the String(long)
// constructor, hence this kludge. Working backward, convert
// each digit of elapsed time to a char, with " ms" at end
// and text command at head. Length is variable, so issue
// command from final determined head position.
cmd[19] = 0;
cmd[18] = 's';
cmd[17] = 'm';
cmd[16] = ' ';
n = 15;
do {
cmd[n--] = '0' + elapsedTime % 10;
elapsedTime /= 10;
} while(elapsedTime);
cmd[n--] = 0xff; // Color LSB
cmd[n--] = 0xff; // Color MSB
cmd[n--] = 0; // Use 5x7 font
cmd[n--] = 0; // Row
cmd[n--] = 0; // Column
cmd[n] = 0x73; // ASCII text command
Serial.write(&cmd[n],20-n);
delay(5000); // Stall a few seconds, then repeat
}
And the timing results, in milliseconds, for the Arduino (top) and chipKIT (bottom):
Arduino: 54,329 ms.
chipKIT: 12,417 ms.
To reiterate (pardon the pun), due to some performance issues we used the traditional Arduino compiler, not the one included in Mpide. If you’re curious, the output from that compiler took about
8.5 minutes
to complete the task! Oof.
So, about a 4.4x speedup. Not bad, but we were expecting a more dramatic difference. Part of this is due to the inherent bottleneck of the serial communication with the LCD…we’ll get back to that in a moment. Another limiting factor is that both chips are emulating floating-point math. If we can use 32-bit integer data types, thePIC32 should really shine. So, a
fixed-point
Mandelbrot generator followed:
/* Simple Mandelbrot set renderer for Arduino vs. chipKIT benchmarking
w/fixed-point math, via www.hackaday.com. This example uses the
4D Systems uLCD-144(SGC) serial display module, wired as follows:
uLCD Pin: RES GND RX TX VIN
Arduino Pin: 2 GND 1 0 5V */
const int
bits = 12, // Fractional resolution
pixelWidth = 128, // LCD dimensions
pixelHeight = 128,
iterations = 255; // Fractal iteration limit or 'dwell'
const float
centerReal = -0.6, // Image center point in complex plane
centerImag = 0.0,
rangeReal = 3.0, // Image coverage in complex plane
rangeImag = 3.0;
const long
startReal = (long)((centerReal - rangeReal * 0.5) * (float)(1 << bits)),
startImag = (long)((centerImag + rangeImag * 0.5) * (float)(1 << bits)),
incReal = (long)((rangeReal / (float)pixelWidth) * (float)(1 << bits)),
incImag = (long)((rangeImag / (float)pixelHeight) * (float)(1 << bits));
void setup()
{
pinMode(13,OUTPUT); // Arduino status LED
pinMode(2,OUTPUT); // LCD reset pin
digitalWrite(13,LOW); // LED off
Serial.begin(115200);
digitalWrite(2,LOW); // Reset LCD
delay(10);
digitalWrite(2,HIGH);
delay(2000); // Allow time for reset to complete
Serial.write(0x55); // Issue auto-baud command
while(Serial.read() != 0x06); // Wait for ACK
}
void loop()
{
unsigned char cmd[20]; // Serial packet for LCD commands
int x,y,n;
long a,b,a2,b2,posReal,posImag,startTime,elapsedTime;
Serial.write(0x45); // Clear screen
delay(100); // Brief pause, else 1st few pixels are lost
cmd[0] = 0x50; // 'Pixel' command is issued repeatedly
digitalWrite(13,HIGH); // LED on while rendering
startTime = millis();
posImag = startImag;
for(y = 0; y < pixelHeight; y++) {
cmd[2] = y; // Y coordinate of pixel
posReal = startReal;
for(x = 0; x < pixelWidth; x++) {
a = posReal;
b = posImag;
for(n = iterations; n > 0 ; n--) {
a2 = (a * a) >> bits;
b2 = (b * b) >> bits;
if((a2 + b2) >= (4 << bits)) break;
b = posImag + ((a * b) >> (bits - 1));
a = posReal + a2 - b2;
}
cmd[1] = x; // X coordinate of pixel
cmd[3] = n * 29; // Pixel color MSB
cmd[4] = n * 67; // Pixel color LSB
Serial.write(cmd,5); // Issue LCD command
posReal += incReal;
}
posImag -= incImag;
}
elapsedTime = millis() - startTime;
digitalWrite(13,LOW); // LED off when done
// Set text to opaque mode
cmd[0] = 0x4f;
cmd[1] = 0x01;
Serial.write(cmd,2);
// Seems the chipKIT libs don't yet handle the String(long)
// constructor, hence this kludge. Working backward, convert
// each digit of elapsed time to a char, with " ms" at end
// and text command at head. Length is variable, so issue
// command from final determined head position.
cmd[19] = 0;
cmd[18] = 's';
cmd[17] = 'm';
cmd[16] = ' ';
n = 15;
do {
cmd[n--] = '0' + elapsedTime % 10;
elapsedTime /= 10;
} while(elapsedTime);
cmd[n--] = 0xff; // Color LSB
cmd[n--] = 0xff; // Color MSB
cmd[n--] = 0; // Use 5x7 font
cmd[n--] = 0; // Row
cmd[n--] = 0; // Column
cmd[n] = 0x73; // ASCII text command
Serial.write(&cmd[n],20-n);
delay(5000); // Stall a few seconds, then repeat
}
And the numbers:
Arduino: 27,734 ms.
chipKIT: 7,209 ms.
Now only a 3.8x difference, despite the PIC32 speaking its native tongue. What gives?
Even at 115,200 bits/sec, the serial LCD is seriously holding us back, as the code is going to “block” as each character is output. Some back-of-envelope calculations suggest how much time is being lost there:
128 x 128 pixels, 5-byte command per pixel = 81,920 bytes.
Including start and stop bits for each byte = 819,200 bits total
819,200 bits / 115,200 bps = ~7.1 seconds.
So our MCU is sitting there for seven seconds with its thumb up its ASCII in order to update the display. Sure enough, if we comment out the Serial.write() command but leave all the calculations in place, the results are significantly more dramatic:
Floating-point:
Arduino: 49,685 ms.
chipKIT: 5,822 ms.
9.3x improvement.
Fixed-point:
Arduino: 22,326 ms.
chipKIT: 168 ms
133x improvement. Hot
damn.
Now we’re talking!
So we could actually render this at interactive frame rates, for the want of a sufficiently fast interface to the LCD. This sort of limitation is going to crop up every time we connect to a real-world device. Not everything is 100% internal code and math…there are finite limits to I/O throughput, and that more than anything can cap the speed of the total application. So we really can’t give a consistent “Everything will be X percent faster” estimate for this board.
The performance looks good for math, especially if an algorithm can work in integer or fixed-point formats. Another thought we had was
analog-to-digital
sampling, which has applications in robotics…say for a
line-follower
or
balancing
robot. More frequent samples should yield smoother operation, or multiple samples can be averaged to yield higher-precision results. The PIC32 should
scream
in that regard. And yet…
void setup()
{
const int samples = 10000;
int i,n;
long startTime,elapsedTime;
Serial.begin(115200);
startTime = millis();
for(i = 0; i < samples; i++) {
n = analogRead(0);
}
elapsedTime = millis() - startTime;
Serial.print(samples);
Serial.print(" samples in ");
Serial.print(elapsedTime);
Serial.print(" ms = ");
Serial.print(((float)samples * 1000.0) / (float)elapsedTime);
Serial.println(" samples/sec");
}
void loop()
{
}
Arduino: 10000 samples in 1119 ms = 8936.55 samples/sec
chipKIT: 10000 samples in 1008 ms = 9920.63 samples/sec
Running full-tilt, the PIC32 is capable of up to 1 million ADC samples per second, compared to 125,000 on the Atmel chip. Certainly the library implementation is going to introduce some overhead, but what gives? Rooting through the library source code turns up this gem in wiring_analog.c:
//* A delay is needed for the the ADC start up time
//* this value started out at 1 millisecond, I dont know how long it needs to be
//* 99 uSecs will give us the same approximate sampling rate as the AVR chip
// delay(1);
delayMicroseconds(99);
This raises a couple of red flags. First, why should the sampling rate aim to match the AVR? For time-related functions like delay() and for Serial.begin() bitrates, of course we’d want similar numbers, those relate to temporal increments. But we don’t — or at least shouldn’t — measure time with ADC readings. And secondly, well, why not find out how long the ADC startup time really needs to be? A few minutes’ sifting through Microchip datasheets eventually turned up the correct answer:
two microseconds.
So, changing the line in wiring_analog.c to:
delayMicroseconds(2);
Yields dramatically different results:
chipKIT: 10000 samples in 101 ms = 99009.90 samples/sec
About a tenfold improvement, and the readings still look valid. This does break like-timing compatibility with the AVR-based Arduinos, but as we said, why? It’s understandable that some decisions may have been made in haste…it’s a monumental project, getting all this code ported to an entirely different chip, and the IDE is still fresh from the oven…but some of these little broken details do have us concerned about what other surprises may still lurk beneath.
Don’t get us wrong…we’re enthusiastic about the chipKIT boards. The technical challenge is met, and just needs some cleaning up. What remains for Digilent now is a marketing challenge:
who is this really for?
When we talk about things like megasamples and fixed-point algorithms, these aren’t exactly day-one topics familiar to the Arduino’s target audience of first-time programmers. And the more advanced user may have moved on already, leaving Arduino behind. So why keep this form factor? Why keep this IDE?
Obviously, part of the allure is the existing ecosystem of Arduino
shields
. There’s some pretty nifty stuff out there, networking and touch screens and stepper motor drivers, most of which will physically plug right in. Having an existing solution saves development time. Then there’s the ease and familiarity of the Arduino libraries. Even though they’re
slow and clunky in places
, it can be really handy sometimes just to squirt out some status information to a serial port without having to do all the UART setup manually.
The chipKIT boards are cleverly priced to approximate Arduino on a cost basis (even undercutting a bit). That’s a great start, with code and price parity, but where’s the
extra
value? What the Uno32 and Max32 may need are some killer apps. Ideas that the novice can implement, but that really take advantage of the PIC32 chip’s added performance and capabilities. Speed may be just one part of that. What can we do with the extra RAM and flash space that a normal Arduino just can’t handle, even with the fanciest of shields? Folks have done some mind-blowing stuff with the
little 8-bit AVR
. We’re looking forward to seeing if this is the tool that takes these hacks to the next level.
| 49
| 49
|
[
{
"comment_id": "398574",
"author": "Stefan",
"timestamp": "2011-05-27T16:22:54",
"content": "“To reiterate (pardon the pun)…”“…with its thumb up its ASCII…”Great, smart puns! More from this writer!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398578",
"author": "Jeremy",
"timestamp": "2011-05-27T16:31:15",
"content": "I’ve been wondering if this chip was really going to break new ground for the arduino crowd. I still have one foot in and one foot out of arduino. There are times that the arduino has shot me in the foot for having lack of programming space due to bloated libraries and there are times that the arduino just makes stuff easy! I’ve been waiting for a good review on Digilent’s new prize. Can you do a follow-up in the next few months as they roll out updates?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398580",
"author": "DanJ",
"timestamp": "2011-05-27T16:46:24",
"content": "I’m interested in this board because it seems a nice way to learn about the PIC32 without dropping $900 on Microchip’s compiler (and it works, now, on Linux/Mac) or having to spend the time building/installing/configuring my own toolchain. It lets me incrementally learn how to use the PIC32 (e.g. I can start writing some useful code immediately without having to spend time digging into some proprietary tool/set of libraries). Over time I can then add other library support or move to Microchip’s official (and seriously overpriced) development environment.Note to Microchip marketing people: Expensive tools are a disincentive to having people adopt your microcontrollers. You, of all companies, should understand this. Given the dominance of the ARM architecture, I would think you’d want to make use of the PIC32 as painless as possible.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398582",
"author": "smoketester",
"timestamp": "2011-05-27T16:47:24",
"content": "The existing ecosystem of Arduino shields was my reason for ordering one of these. Great review.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398585",
"author": "Phil Burgess",
"timestamp": "2011-05-27T16:58:20",
"content": "@DanJ: MPLAB X is free, the only limitation is that the higher optimization levels (-O2, -O3 and -mips16) are disabled. No code size limits. Pretty good deal.Something I neglected to mention in the review is that both boards have ICSP headers and can be used with the PICkit 3 and MPLAB X. So there’s an opportunity to use a “grown up” IDE with the chipKITs, at the loss of the Arduino libraries and C++ features (Microchip’s C32 is C only).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398588",
"author": "Straub",
"timestamp": "2011-05-27T17:09:11",
"content": "Another feature of the PIC32 that I haven’t seen mentioned is its built-in USB On-The-Go (OTG). This lets the PIC act as a USB master without the addition of extra boards/chips. This could be used to talk to USB slave devices, like USB flash drives, USB printers, etc. Do you think they’ll make a USB library for this? I’d be really interested in seeing that happen.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398591",
"author": "Diego Spinola",
"timestamp": "2011-05-27T17:12:58",
"content": "Great Article! I’m waiting for my own boards to arrive so I can run a Dhrystone benchmark on them",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398592",
"author": "Charles Gantt",
"timestamp": "2011-05-27T17:12:58",
"content": "Very nice article Phil. This really makes my coverage look quite amateur. Can’t wait to read more chipKIT coverage from you!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398593",
"author": "addidis",
"timestamp": "2011-05-27T17:13:53",
"content": "Yeah great review. I really hope the guys at Arduino see this as a good thing. In the end what makes arduino is the code or another way to look at it is the people who use it. There are people (my self for instance) who are completely put off by the stock problems of atmel, who initially learned on a 16f84. This opens the doors for me and like minded people. There is no debate really if this board will be more powerful with the proper tweeking. But the real benefit to the arduino community is the wide scale adoption of their platform, and willingly inviting their (microchip’s)loyal users the ability to contribute directly to the business side that drives Arduino. The shields. More users means more shields sold which means more incentive for people to make shields. This isnt so much subtracting from people buying Arduino TM, but ADDING people to the community that might otherwise have been excluded. More advanced users using the platform means faster improvements (think the silly serial lag problem) will happen making the Arduino platform even better, and more widely used.wow that was long winded.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398595",
"author": "Andrew",
"timestamp": "2011-05-27T17:23:08",
"content": "Just a nitpick: the Chipkit board actually has about a factor of7.5times the MIPS of an Arduino, since AVR delivers a max of 1MIPS/MHz (less around branches), and PIC32 is a max of 1.5MIPS/MHz (again, less if the pipeline gets blown).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398598",
"author": "zing",
"timestamp": "2011-05-27T17:47:10",
"content": "Awesome. As soon as they put out the communications shield that brings the ethernet pins out to a PHY, I’m getting the max32",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398599",
"author": "Haku",
"timestamp": "2011-05-27T17:53:56",
"content": "I think one aspect of the the chipKIT that is a downside, but which can’t be helped, is that the microcontroller is a surface mounted one which means it’s a step beyond the average electronics hobbyist to make their own boards using a bit of stripboard and a DIP IC as with the more traditional microcontrollers people use.On the upside it means chipKIT users will be heavily reliant on the pre-built boards and shields so the companies making/selling chipKITs and sheilds will do more trade.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398609",
"author": "Charles Gantt",
"timestamp": "2011-05-27T18:31:06",
"content": "@Zing, The official chipKIT ethernet shield will be out in June.@Haku, I have a feeling there will be some PIC32 bare chips with the bootloader already burnt on them. Its not hard to hand solder a lot of SMD stuff as long as you have a flux pen, thinsoldering tip and some very thin solder.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398620",
"author": "Diego Spinola",
"timestamp": "2011-05-27T18:46:52",
"content": "@Andrew You can’t quite compare them like that since the low level instruction parameters are 32 bit long in PIC32 vs the 8Bit AVR… a 32bit sum takes a single instruction on the PIC32 architecture ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398665",
"author": "asdf",
"timestamp": "2011-05-27T19:58:19",
"content": "@Danj, @Phil Burgess: Microchip’s compiler is just GCC, isn’t it? AFAIK you can recompile their source releases and get the full compiler, all optimizations enabled.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398699",
"author": "ftorama",
"timestamp": "2011-05-27T21:04:42",
"content": "What’s about a comparison between Maple and Uno32?As I bought a Maple recently, I’d be curious to know.Also, Arduino is far from being optimized. Look at DigitalWrite definition and think about replacing it with a simple register access.It’s made to be simple, but for this reason, it’s verrryyy slow",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398705",
"author": "You",
"timestamp": "2011-05-27T21:18:42",
"content": "why does the uno in the picture have two ICSP pins?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398723",
"author": "addidis",
"timestamp": "2011-05-27T21:53:42",
"content": "Here is the official forum (ie support) for the chipkits. I think it was left out of the above post.http://www.chipkit.org/forum/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398833",
"author": "The Best Electronic Stock",
"timestamp": "2011-05-28T01:38:47",
"content": "I think it was left out of the above post.Look at DigitalWrite definition and think about replacing it with a simple register access.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398872",
"author": "Andrew",
"timestamp": "2011-05-28T02:56:58",
"content": "@Diego that only means it’s faster by an evenlargermargin :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399032",
"author": "WestfW",
"timestamp": "2011-05-28T08:57:43",
"content": ">> AVR delivers a max of 1MIPS/MHz, and PIC32 is a max of 1.5MIPS/MHzThe PIC32 core is supposed to deliver about 1.5 “Dhrystone MIPS” (DMIPS) per MHz, which is a specific benchmark performance that is about more than just the raw instruction speed. The AVR apparently clocks in on a similar benchmark at about 0.3 DMIPS/MHz. (http://www.ecrostech.com/Other/Resources/Dhrystone.htm)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399057",
"author": "ftorama",
"timestamp": "2011-05-28T10:02:30",
"content": "@WestfWPIC32 seems to reach 1,5 DMIPS/Mhz on paper but…I didn’t find any real bench so this has the same reliability as 1 MIPS/Mhz from Atmel.Then, this value is given while memory is configured at “0 Wait State”. This means the max clock speed should be 30MHz. To reach 80MHz, wait state should be set to 2, reducing Dhrystone results.Anyway, it’s logical that a 32 bits chip is faster than a 8 bit, and hopefully, it is ^^",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399066",
"author": "threepointone",
"timestamp": "2011-05-28T10:24:11",
"content": "My personal impression of the ChipKIT is that if you’re doing a very quick project and want to use prewritten Arduino code, you just go for using the mpide compiler. The similar delay times are there to ensure that code is /completely/ compatible.If you’re doing real high performance stuff, though, you get the benefit of being able to use a PICKit to write more optimized code in C, so you get the best of both worlds.Things I really wish they implemented:a) why not switch between high performance and arduino compatibility mode? have two sets of libraries, one with delays, one without.b) why not have line-by-line debug??? they should have written the thing to work with a PICKit. I was talking to someone who recently switched to the MSP430 cheapo board, and he realized something I’d forgotten about Arduinos (I usually just do straight up PIC or microcontroller with the native programming tools): You don’t get the built-in line-by-line debug functionality! It’s built into the chip, but you can’t use it because it uses a silly bootloader! I was hoping a company like digilent would think to make that work out, but i guess not =/ Really, for an easy debug/prototyping tool, I really think giving the ability to do line-by-line debug and watching code is really, really great for a beginner to have access to.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399096",
"author": "Whatnot",
"timestamp": "2011-05-28T11:35:26",
"content": "Good writeup and well done on the controlled criticism and research.As for why arduino, I feel other systems than arduino might be better but they are often very confusing and convoluted instead of having a basic board and adding shields which is a simple clear setup.It’s a bit like {companynamewithheldbyauthor} does, it’s not that it’s not all available elsewhere cheaper and faster but the package is what makes it sell.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399133",
"author": "DigicamMan",
"timestamp": "2011-05-28T13:19:54",
"content": "Sounds like a very cool board and I *love* the common IDE: I can use a kit-built $15 ‘duino work-alike from Modern Device for low-end projects, and the Chipkit for more demanding stuff. The big disappointment for me is that the ADCs are still only 10-bit: I really want 12-bit (as in the Maple) for projects where measurement is more critical…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399247",
"author": "Peter Hamilton",
"timestamp": "2011-05-28T16:58:33",
"content": "Does anyone know if the PIC32 can handle SSL? Specifically HTTPS? a 32-bit processor should theoretically be able to handle that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399568",
"author": "Mark",
"timestamp": "2011-05-29T18:44:07",
"content": "We got the compiler speed problem fixed. The problem was a gcc vs g++ command for the step that converted the elf file. It needed to be gcc instead of g++Mark and Rick",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399572",
"author": "Fabio Varesano",
"timestamp": "2011-05-29T18:48:24",
"content": "Guys, this is a non libre hardware project. I wouldn’t even touch it.We arduino users enjoy an open and libre hardware/software/community .. let’s keep it that way.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399665",
"author": "wetware",
"timestamp": "2011-05-30T01:02:00",
"content": "@fabioWe arduino users enjoy a great community, with a great history of sharng code and project examples. This is being sold as a one piece, pre-built board that is compatible with that same community’s projects and code. Who cares if the board itself is closed source, copy out the bootloader code and plop it in a pic 32 if you want to make your own hardware on the platform level or simply wait till the chips are sold indivdually with pre-burned boot code.Want breadboarding? Simply get an adapter for tqfp smd chips and extend the vertical pins with wire…This is the first real step in the right direction to really open the arduino platform up to better micros, and then the “it’s not 100% open source” nutters show up…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399686",
"author": "system bored",
"timestamp": "2011-05-30T02:13:54",
"content": "I definitely second Fabio in calling out the none-libre aspect. The open design and the ecosystem of Arduino clones is a large part of its success. Success that chipKIT wants to ride to the bank with shield compatibility.Open Hardware is where we the DIY community have power and future. It is what we do. What would we gain by forgetting that? Vendor lock-in? Yum-yum!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399755",
"author": "WestfW",
"timestamp": "2011-05-30T10:00:17",
"content": "@fabio: which part are you complaining about not being open enough? HW: published w CC/SA license. SW: published modifications to Arduino IDE plus gcc/mips underlayer…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399776",
"author": "Fabio Varesano",
"timestamp": "2011-05-30T11:55:00",
"content": "Sorry, my fault! I didn’t noticed that there were downloadable sources of the designs..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400185",
"author": "Nico Verduin",
"timestamp": "2011-05-31T17:22:30",
"content": "Just bought one a couple of days ago. Should arrive sometime this week. I am still impressed with the price / quality ratio. Compared to my KIM-! microcomputer I bought in 1976 :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400412",
"author": "makomk",
"timestamp": "2011-06-01T08:36:06",
"content": "threepointone:If you’re doing real high performance stuff, though, you get the benefit of being able to use a PICKit to write more optimized code in C, so you get the best of both worlds.That’s not much use at all then, given that you have to pay $900 to Microchip if you want higher compiler optimisation levels enabled in their C32 compiler. (Which they didn’t even develop – it’s a rebranded version of MIPS gcc with copy protection added.) One of the advantages of this is that it seems to avoid the need to deal with Microchip’s horrid compiler licensing.@wetware: it’s not the board itself that’s closed, but stuff like the libraries they’re using (in particular,the C library is closed sourceand under an unclear license, and I believe some of the code and headers used to access peripherals are too).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400489",
"author": "Diego Spinola",
"timestamp": "2011-06-01T13:49:19",
"content": "@Andrew My point exactly =D , I’m waiting for mine to arrive right now",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400765",
"author": "Jason",
"timestamp": "2011-06-02T03:40:46",
"content": "I’m also excited about the Chipkits, but in the calculations of time above I have a few questions. When commenting out the serialWrite, we would expect about 7 seconds less for all boards if communications are running at the same speed (115Kb), but in your second floating point test for the Arduino the time measure is exactly the same (54,329 ms). Is this a typo or miscalculation?And another question I had, as I was sifting through the “wiring_analog.c” file and looking at the delay I noticed directly after it is a delay loop which is waiting for the interrupt flag to be set, so is the delay even necessary?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401007",
"author": "Phil Burgess",
"timestamp": "2011-06-02T17:27:23",
"content": "@Jason: Good catch…I’d copied the wrong number from my notes. The Arduino floating-point time without the Serial.write() calls should be 49,685 ms (article now updated). The improvement factor was correct as posted, just the time was incorrect.Not sure about the delay vs. interrupt flag. I needed to poke around in that file today anyway, and will try either case.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401012",
"author": "Phil Burgess",
"timestamp": "2011-06-02T17:49:11",
"content": "@Jason, part II: some delay is necessary, to allow the ADC time to ‘settle’ after being enabled and switched to a new input line. After a little experimentation, it turns out that the 2 uS delay is too short after all…it returns correct-looking readings, but they’re mapped to the wrong pins! Ditto if the delay is disabled.9 microseconds appears to be the minimum “safe” delay to get correct readings from the correct pins. This has minimal impact on the sampling rate: it still manages a very good 92,592 samples/sec.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401021",
"author": "Phil Burgess",
"timestamp": "2011-06-02T18:22:31",
"content": "@Jason, the final chapter: okay, found the real issue. analogRead() isn’t clearing the interrupt flag before testing, instead it’s done after the reading, which isn’t correct behavior (it’ll just get set again as the ADC free-runs). The 2 uS settling time is probably still a good idea though.So, original stuff in wiring_analog resembles this:delayMicroseconds(99);while ( ! mAD1GetIntFlag() ) { }analogValue = ReadADC10(0);mAD1ClearIntFlag();Should be changed to:delayMicroseconds(2);mAD1ClearIntFlag();while ( ! mAD1GetIntFlag() ) { }analogValue = ReadADC10(0);Now getting expected readings from expected pins at favorable speed, exactly 100,000 samples/sec.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401040",
"author": "Jason",
"timestamp": "2011-06-02T19:10:27",
"content": "@Phil, That is great news about the ADC. I’m not familiar with the overhead of the Arduino platform, but as I was looking through some of the files I didn’t see where the “sample bit” of AD1CON1 was set. So is that something that is done in overhead periodically?Thanks again for the updates.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401074",
"author": "Phil Burgess",
"timestamp": "2011-06-02T20:12:14",
"content": "@Jason: I don’t know the gritty details of PIC32 ADC, but my impression from the ADC_AUTO_SAMPLING_ON bit passed to OpenADC10() (still in wiring_analog.c here) is that they’re running the ADC in a sort of free-run mode and just taking one sample from the resultant stream when needed. Not exactly sure why that route was chosen, but it does produce valid results.I’m guessing that setting ADC_SAMP_ON and watching ADC_CONVERSION_DONE would be the equivalent for a single-shot ADC sample? It’s not a terribly huge function to get through, so maybe I’ll try rewriting it that way.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "401129",
"author": "Jason",
"timestamp": "2011-06-02T22:08:08",
"content": "@Phil, You are right. I checked the datasheet and found the “ASAM” bit is set which set up auto-sampling immediately after the last conversion. It also sets the “Sample” bit. So the delay makes more sense now. I’m guessing it allows for the a sample or two to be taken while changing channels and the sample actually taken is after a stable period.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "404417",
"author": "Matt",
"timestamp": "2011-06-11T15:44:43",
"content": "Does the Uno32 have any EEPROM for storage when the batteries are disconnected? I know the Previous Arduino had some. Or can you tap into the Flash?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "404431",
"author": "Phil Burgess",
"timestamp": "2011-06-11T16:34:46",
"content": "@Matt: not EEPROM proper, but there are ways of storing data in the program flash space. Google around for “pic32 eeprom emulation.”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "404433",
"author": "Matt",
"timestamp": "2011-06-11T16:37:45",
"content": "@PhilThanks. I’ve just ordered my Uno32! Looks good",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "410109",
"author": "Gene Apperson",
"timestamp": "2011-06-26T00:38:36",
"content": "Nice review and followup on the Uno32 board. I would like clarify one thing: Digilent (me specifically) designed the hardware, and we (some interns who work for me) ported some of the Arduino libraries, but Digilent did not do any of the work on the MPIDE, boot loader or the Arduino core files.That work was done by Mark Sproul and Rick Anderson (FUBAR labs) . I dont’t want to take credit for work we didn’t do.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "423238",
"author": "Will",
"timestamp": "2011-07-26T19:05:48",
"content": "It’s good to hear EEPROM is somewhat supportedhttp://www.chipkit.cc/forum/viewtopic.php?f=7&t=242",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "445812",
"author": "Marcus Fazzi",
"timestamp": "2011-09-01T20:12:25",
"content": "I tested that codes with a Emperor 795 + UBW32 bootloader and Pinguino IDE, using a ITDB02 Display 400×240, I take 48s for float version and 5.7s for integer version, note my display has so many more pixels and uses 16bit data bus + 4bit control bus…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "2960051",
"author": "Jovan Ivković",
"timestamp": "2016-03-20T21:42:06",
"content": "Hi Phil and all,5 years has past so I hope I find you well and my question is did anything change in respect of that ADC conversion speed.I just get ChipKIT Pi version with little slower PIC 32MX250xx UART version on 40MHz and to upgrade it to USB boot-loaded 50MHz version to be able to ADC some sensors from PC at top ADC speed because UART/serial is like limited and then i stumble up on your review and get relay disappointed to find out about >10x slower then specified (1.1MSPS) sampling speed.Is there any improvements in that MPIDE, code etc. area?",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,181.676187
|
||
https://hackaday.com/2011/05/27/minimalistic-555-adding-machine/
|
Minimalistic 555 Adding Machine
|
Nick Schulze
|
[
"classic hacks",
"hardware"
] |
[
"555 timer",
"calculator"
] |
How many 555 timers does it take to add up two 10 digit numbers? [Alan’s]
555 Adding Machine
does it with 102 of them, he designed the machine as an extreme entry to the 555 contest and the original plan was to make it even more complicated. This machine uses the 555’s to implement a nine decade accumulator and multiplexer, all inputs are managed by an old school dial from a rotary phone which apparently provide nicely timed outputs. Addition and subtraction are achieved using 9s compliment arithmetic which he discusses in the video after the break, for anyone who wants to brush up on 9s compliment or 555 theory.
Alan’s website has some nice pictures (We’re particularly impressed by all that minimalistic soldering) including schematics, and a very nice 33 minute video in which he discusses in detail how the machine works and even offers some history on the Pascaline, which is mechanical calculator that works on similar principles.
[youtube=http://www.youtube.com/watch?v=SVOliDG4AAc&w=470]
| 6
| 6
|
[
{
"comment_id": "398548",
"author": "MrCung",
"timestamp": "2011-05-27T14:49:55",
"content": "Not sure I would call this “Minimalistic”, but hey it’s really cool.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398553",
"author": "hospadar",
"timestamp": "2011-05-27T15:04:18",
"content": "He should have use 555 555 timers (or 227.5 556 timers, just chop one in half)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398594",
"author": "Hirudinea",
"timestamp": "2011-05-27T17:19:54",
"content": "That is very cool, needs nothing from a technical point of view but from just an asthetic point of view it needs a steampunk wooden and brass cabinet and nixie tubes, then it would be totally cool!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398834",
"author": "The Best Electronic Stock",
"timestamp": "2011-05-28T01:39:15",
"content": "a steampunk wooden and brass cabinet and nixie tubes, then it would be totally cool!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398955",
"author": "Drone",
"timestamp": "2011-05-28T05:19:21",
"content": "You just “discovered” this one HaD? Man, you’re late to the party…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399009",
"author": "mike",
"timestamp": "2011-05-28T07:50:30",
"content": "this would actualy output to a nixie just perfectly, the nixie’s have a seperate segment for each digit, and this has a seperate LED for each digit",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,181.810227
|
||
https://hackaday.com/2011/05/29/hidden-device-distorts-news-on-wireless-networks-brews-beer-is-time-machine/
|
Hidden Device Distorts News On Wireless Networks, Brews Beer, Is Time Machine
|
Brian Benchoff
|
[
"News",
"Wireless Hacks"
] |
[
"man-in-the-middle",
"newstweek"
] |
We covered the Newstweek, a wall-wart sized box that injects fake news stories over public WiFi connections last February, but now there’s a great
walk through
and it seems our doubts about this project were disproved.
The Newstweek uses ARP spoofing to change the text displayed on several news sites. After doing some field research, placing and configuring the device, there’s a simple web frontend that configures the man-in-the-middle hack. Right now, the Newstweek only allows a few news sites to be targeted, but the team is working on allowing anyone to add their own targets.
Aside from the relatively simple build, we’re wondering about the social engineering aspects of the Newstweek. In our previous
coverage
of the Newstweek, we couldn’t decide if this was a social commentary art project, or a real device. It looks like it’s both now. Would hackaday readers succumb to injecting, “President Bacon addressed the nation last night…” or would you do the responsible thing and put the “(D)s” and “(R)s” in their proper places?
The Newstweek team posted a video of a
short demonstration
, but check out the video after the break for the “incredibly geeky and thorough demo.”
[vimeo=http://vimeo.com/18637790 w=470]
| 40
| 39
|
[
{
"comment_id": "399609",
"author": "localroger",
"timestamp": "2011-05-29T21:23:10",
"content": "This is a bit more black hat than what I’m accustomed to seeing on HaD.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399614",
"author": "ferdie",
"timestamp": "2011-05-29T21:35:37",
"content": "wtf thats creapynow we can not trust the news from the bbc sitewhat is nextthis is more mind fucking and make pepole angry than hacking",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399615",
"author": "turn.self.off",
"timestamp": "2011-05-29T21:42:10",
"content": "This on top existing issues with MITM on public wifi…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399621",
"author": "ean bool",
"timestamp": "2011-05-29T21:53:40",
"content": "oh well.. the news wasn’t to be trusted anyway… now at least we -know- it’s being tampered with :)",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "3140367",
"author": "CrashSerious",
"timestamp": "2016-08-18T05:22:48",
"content": "Gosh, now I wish HaD had a “like” facility.",
"parent_id": "399621",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "399623",
"author": "jordan",
"timestamp": "2011-05-29T22:10:45",
"content": "This is easily the best thing i have ever seen",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399624",
"author": "UltimateJim",
"timestamp": "2011-05-29T22:11:42",
"content": "Where the beer?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399627",
"author": "Paul",
"timestamp": "2011-05-29T22:28:48",
"content": "fascinating idea with ironically very news-worthy consequences",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399628",
"author": "drake",
"timestamp": "2011-05-29T22:40:37",
"content": "Or instead of news add in some pay per view ads2) ???3) Profit?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399636",
"author": "Richard",
"timestamp": "2011-05-29T23:04:06",
"content": "Bring on the lulz…That has to potential to be wonderfully disruptive, especially if the feed that’s being ‘got at’ is the one a journalist is reading so they did the hard work for you with a little comedy of your choosing…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399643",
"author": "D_",
"timestamp": "2011-05-29T23:34:37",
"content": "LOL; as I was watching one of the videos I was thinking to myself it needs an AC power pass through, as not to hog a recp & getting unplugged. About that time someone plugged a carpet sweeper into one. That was before I found the parts list.Certainly hacking, and on several levels what to call it beyond that I don’t know.Also potentially disruptive, but will take a lot of long term dedication on the part of those creating similar networks to keep the faux news current with current issues. I have to admit I’m not entirely sure how the newstweek network functions. Not to mention keeping the hardware on locations as knowledge of this gets out. This is being described as an “art” project maybe they don’t intend any long term maintenance by the creators. The user of free hotspots who don’t do so know will of the learn to pay attention to the SSDI of the wifi connection they are using. That alone will have the appliance users calling for the heads of the spoofers.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399646",
"author": "David",
"timestamp": "2011-05-29T23:41:14",
"content": "You mean we could configure it to tell the truth!?That would be an amazing thing for many people to get a fresh injection of reality.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399647",
"author": "octel",
"timestamp": "2011-05-29T23:43:23",
"content": "@D_This device intercepts traffic and modifies keywords/sentences, relaying modified data seamlessly back to the client that originally requested the page.There is no maintenance or creation of fake news is required!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399660",
"author": "Andy",
"timestamp": "2011-05-30T00:37:30",
"content": "Anyone else notice that the london operative still had a European plug?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399663",
"author": "Shadyman",
"timestamp": "2011-05-30T00:53:41",
"content": "@octel:So what you’re saying is that it could be used to insert profanities into text where it would be fairly unexpected?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399664",
"author": "MrBishop",
"timestamp": "2011-05-30T01:01:00",
"content": "Now we just need to cook up a George Orwell’s styled web page, perhaps with a “live” video or audio stream. I think we all know how well it worked last time someone tried it. MAHAHAHAHAHAW",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399666",
"author": "TheCreator",
"timestamp": "2011-05-30T01:03:40",
"content": "@ shadymanThat is correct, i have several ettercap filters that i wrote that does exactly that. It can intercept on any TCP /UDP connection. Meaning it can be used on more than just http requests. Mine was set to work with AIM. Once the user sent out a packet it was manipulated so the receiver saw a totally different message. Same thing happened on incoming messages.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399674",
"author": "lwatcdr",
"timestamp": "2011-05-30T01:26:54",
"content": "Yea just think how bad this could be. How about “Small Pox threat at JFK” Or Terrorists use Nuclear Weapon to destroy LA.Please this think could be a disaster in a plug.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399675",
"author": "DanJ",
"timestamp": "2011-05-30T01:30:06",
"content": "@lwatchdr, not only in a plug but in a virtual machine in a laptop as well — in any public space. Brings the idea of crowdsourcing to a whole new level.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399678",
"author": "Hirudinea",
"timestamp": "2011-05-30T01:47:27",
"content": "Think what this could do to the Great Firewall of China, spreading the truth one coffee shop (tea shop?) at a time.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399683",
"author": "dbear",
"timestamp": "2011-05-30T01:52:27",
"content": "Have the Panther Moderns heard of this?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399689",
"author": "HellWarrior",
"timestamp": "2011-05-30T02:42:15",
"content": "I have set up something similar a while back with a original la fonera. Used it for packet injection and image spoofing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399737",
"author": "haexn",
"timestamp": "2011-05-30T08:03:12",
"content": "This could be the future of news… everyone knows the news is bull already, better to have absurdly-fake news than fake-believable news.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399753",
"author": "nosiam",
"timestamp": "2011-05-30T09:40:32",
"content": "If the BBC’s news was tweaked and altered, I still wouldn’t believe it; its the same bullshit.Interesting hack through.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399761",
"author": "Kim",
"timestamp": "2011-05-30T10:27:33",
"content": "Skynet will begin when these start injecting news stories about themselves…Wicked idea though, as with most things there are some ethically questionable uses for it though – as well as incredibly good ones.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399768",
"author": "highjumpman",
"timestamp": "2011-05-30T11:14:38",
"content": "I wonder what happens if someone plugs that thing in at the stock exchange…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399774",
"author": "KoPla",
"timestamp": "2011-05-30T11:36:35",
"content": "even if it’s “black” … it’s nice to see it here… the most you know the better… maybe this info become “white” for someone",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399788",
"author": "xorpunk",
"timestamp": "2011-05-30T12:37:00",
"content": "SSL or a newer router kills this..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399801",
"author": "Nick",
"timestamp": "2011-05-30T13:54:05",
"content": "@xorpunk, how does a newer router kill this? Do you just mean better wifi security kills it?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399827",
"author": "Pete",
"timestamp": "2011-05-30T15:36:55",
"content": "Here are a couple of options on how to defeat this thing (ordered easiest to hardest, least effective most effective):1: You can use HTTPS whenever possible. Some sites (like Google Reader) will work through HTTPS. Since the SSL/TLS mechanism used by HTTPS provides end-to-end encryption and integrity checks, it would be impossible for this thing to work without a spoofed SSL cert. Just be careful not to accept any new certs when visiting the sites and make sure to check to make sure you’re on an HTTPS-based webpage before accepting any news you get form it.2: Tunnel your browser connection through an SSH-based SOCKS proxy. There are plenty of instructions on the web on how to do this. Basically, you set up an SSH tunnel to a remote machine and then pipe all your web traffic through it. This won’t help if the remote machine is being victimized, but if that machine is on a wired connection at your house, then it’s far less likely to be attacked in this way. This will even protect you when using sites that don’t offer HTTPS.3: Use a VPN. A VPN works like #2 but will help to make sure all traffic (even non-HTTP) traffic gets encrypted and validated. So this is the best option if it’s available to you.All of these methods also protect against FireSheep and other forms of attack based on the complete lack security around HTTP.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399836",
"author": "TheCreator",
"timestamp": "2011-05-30T16:09:11",
"content": "@ peteyou can strip the SSL encryption request on the outgoing packet. This will send all information in plain text.Same thing with the SSH connection. Since the MITM attack can manipulate any protocol it is possible to strip the request for encryption causing the incoming packet to be in plain text. They also have SSL Strip, which will do the same thing without a filter.If you want to really secure this you can configure the router to reject duplicate IP’s. This is how the MITM attacks are performed by having the host (the box plugged into the wall) act like the router and manipulate the information that is passed through it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399865",
"author": "mithodin",
"timestamp": "2011-05-30T19:16:51",
"content": "You know what would be hilarious? Altering images with some face recognition system to give everyone in any picture a funny moustache.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399882",
"author": "TheReality",
"timestamp": "2011-05-30T20:41:48",
"content": "This is nothing new. I worked for a company which provided IT services for various government agencies like the AF and DOD and 10 years ago someone came in and demonstrated a product like this. The device was designed to be installed at the ISP level, but could be used at individual locations of a company/agency and then any data could be changed on any website or email.If you think you can trust information on the web, you are sadly mistaken. The government has complete control.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399884",
"author": "efnord",
"timestamp": "2011-05-30T20:45:38",
"content": "That router needs 5W to run; 1.5A of 3.3V. Why make this plug in? Seems to me it’d be trivial to build into a thick Frisbee-style disc with a solar panel on top. Network penetration by tossing a toy on a roof.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399898",
"author": "wabbit_",
"timestamp": "2011-05-30T21:47:13",
"content": "..can someone explain more,about how to more than the site??",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399901",
"author": "VogVoo",
"timestamp": "2011-05-30T21:58:00",
"content": "Whoa! A time machine? do want!http://www.privacy-web.no.tc",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399942",
"author": "Polymath",
"timestamp": "2011-05-31T00:34:40",
"content": "Two questions1: Does anyone remember what happened when War of the Worlds was broadcast for the first time over the radio?2: Where’s the beer?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399978",
"author": "Hitek146",
"timestamp": "2011-05-31T03:46:41",
"content": "^@Polymath1)Yea, that was some funny shit… :)2)In my hand!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400139",
"author": "TheCapt",
"timestamp": "2011-05-31T14:00:45",
"content": "Now, inject photos of the people in the cafe that you plug this in at.. and watch the fireworks as they are listed as “Wanted” or “Suspect”, better if they see themselves.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400221",
"author": "Pete",
"timestamp": "2011-05-31T19:17:55",
"content": "@TheCreatorI hadn’t heard of the method of stripping the HTTPS from the request. I’m really not sure how that would work. If the browser is expecting the request to be HTTPS, it will initiate a connection to port 443 to send the request and initiate the SSL connection before it even sends the header. So that would probably prevent such an attack from working because the request headers are never sent in the clear over the network.That sort of attack MAY work if you’re on an HTTP page and expecting a link to take you to an HTTPS page (such as with many sites that have logins on their HTTP pages that are supposed to post to their HTTPS sites). Of course, if you explicitly type the address (e.g. “https://reader.google.com”) into your browser (as I recommend), that sort of attack wouldn’t work.Any sort of MITM attack with SSH or HTTPS would have to attack those protocols and/or the implementation of those protocols in order to succeed. So it would take an entirely different (and FAR more sophisticated) kind of attack for that to actually work.So I still feel pretty confident that all three of my methods would be effective to varying degrees. The VPN and SSH-tunneling methods should be nearly fool-proof against this sort of attack (assuming users don’t accept fraudulent SSL certs or host identifiers).",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,181.88527
|
||
https://hackaday.com/2011/05/29/fixing-post-errors-with-a-single-key/
|
Fixing POST Errors With A Single Key
|
Mike Nathan
|
[
"computer hacks",
"Peripherals Hacks"
] |
[
"error",
"keyboard",
"kiosk",
"pc"
] |
Instructables user [Mike Craghead] was in the middle of building a very compact public computer kiosk
when he ran into a problem
with the processor fan. It was too big for the enclosure and had to be swapped out with a fan that did not allow the motherboard to monitor its rotational speed.
Motherboards don’t like this situation very much, and each time the computer was started, it would hang at the BIOS screen waiting for someone to press the F1 key to continue. Knowing that everything was just fine, and that there were no BIOS options which would allow him to ignore the error, he crafted a simple solution to the problem.
Since the computer just needed someone to press the F1 key, he figured he could rig up a small dongle that would always hold down the key for him. After verifying that the OS would ignore the stuck key, he tore apart a keyboard and traced the circuit matrix to identify which pins he had to short in order to represent the F1 key press.
Satisfied with his handiwork, he plugged the board into his computer and found that everything worked just fine. Sure it might not be the most elegant solution to the problem, but it gets the job done at a cost of zero dollars – you can’t beat that!
| 60
| 50
|
[
{
"comment_id": "399532",
"author": "Pedro",
"timestamp": "2011-05-29T17:01:57",
"content": "BIOS -> Power Options -> CPU Fan -> IgnoreZero dollar solution that doesn’t use up hardware, space in a cramped case or continually send a signal to the OS.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399534",
"author": "Kuy",
"timestamp": "2011-05-29T17:13:05",
"content": "This is a real hack of a hack, and not in a good way. A much better solution would be to take an attiny13, a low-end MSP430 or a (*shudder*) 555 and rig it to generate faked fan-speed pulses, or even better, simply generate real ones by interrupting a LED/photodetector pair with the fan’s spinning blades.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399535",
"author": "Terc",
"timestamp": "2011-05-29T17:15:43",
"content": "Uh. Wouldn’t it be _much_ easier to just find a way to simulate a fan at an acceptable RPM? Also, it’d have the extra benefit of not requiring a human to press the button (This is especially important since this is a kiosk).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399538",
"author": "fermicirrus",
"timestamp": "2011-05-29T17:20:31",
"content": "Terc, they dont have to push any buttons, it’s wired to keep F1 always on.I Love the idea of re-using old keyboards, there are waaaaay too many out there and they’re all cheap or free anymore. Why waste money/resources on NEW hardware? this is hack a day, not engineer a day.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399539",
"author": "fermicirrus",
"timestamp": "2011-05-29T17:21:15",
"content": "(not to say hacking and engineering aren’t related)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399542",
"author": "TheCitySpiders",
"timestamp": "2011-05-29T17:34:02",
"content": "a simple bios hack would suffice or even an update to a perhaps newer bios if available or contact vendor and request a revision for said feature{being able to ignore fan speed input}",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399546",
"author": "Justin case",
"timestamp": "2011-05-29T17:53:28",
"content": "Answer #2.nuff said.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399552",
"author": "ejonesss",
"timestamp": "2011-05-29T18:03:38",
"content": "couldnt you go simpler?use a 555 timer to generate the signal to fool the board to work?or using some duct tork have the fan somewhere else in the enclosure hp does a plastic 90 elbow duct to pull the heat from the cpu .",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399554",
"author": "salvo",
"timestamp": "2011-05-29T18:05:13",
"content": "Cool! I have a similar problem with my Dell that I use as HTPC: Bios hangs for no reason, waiting for F1 to be pressed. This solution wouldn’t work for me though, as the F1 key would have to be depressed after initial boot has passed… But good starting point maybe?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399555",
"author": "DarkFader",
"timestamp": "2011-05-29T18:07:52",
"content": "555 on the RPM sensor then?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399559",
"author": "YaBa",
"timestamp": "2011-05-29T18:26:56",
"content": "@Pedro: read the original article before posting dumb things. His BIOS doesn’t have the “ignore” option.@Kuy: The same goes to you, although that’s a really good idea, the guys said he doesn’t have the knowledge to do it.Nice hack. I had no idea that the OS would ignore stuck keys :|",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399560",
"author": "Hackerspacer",
"timestamp": "2011-05-29T18:27:34",
"content": "I don’t see how continually pressing F1 would simply be “ok” to a modern OS? Not only would it attempt to chord the F1 with other keys when you pressed them, there are generally limits on how many keys you can press at a time. Continually pressing a key seems like it could screw up input.All simpler solutions aside, an arduino pro mini could have monitored the POST and pressed F1 automatically just a single time, when needed and taken up just as little space.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399561",
"author": "Rohit Mahajan",
"timestamp": "2011-05-29T18:30:06",
"content": "In addition to ideas by Kuy, I see two other simple solutions-1> OBDEV’s USB HID implementation to send F1 3-5 secs after start-up. So other OSes without key ignore have no problems.2> Since he’s buying a new heatsink… the cause of the problem…. buy one with feedback! 0$ hack",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399563",
"author": "injulen",
"timestamp": "2011-05-29T18:36:19",
"content": "Guys.. it clearly states that he couldn’t do it in his BIOS options.And it says that the OS ignores the stuck F1.This is a brilliant work around. It is definitely more simple than pretty much any other of the suggestions in the comments so far.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399571",
"author": "Mike Bradley",
"timestamp": "2011-05-29T18:48:02",
"content": "Just curious, I build allot of machines, and I set every one to HALT ON NO ERRORS, thus I never see the F1 to continue.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399574",
"author": "Napalm",
"timestamp": "2011-05-29T18:50:47",
"content": "Just did a little testing. Standard Intel cooler pulls the sense pin to ground at 60Hz @ 12V standard with a 50% duty cycle. My spare Zalman high performance cooler pulls the sense pin to ground at 100Hz @ 12V with a 50% duty cycle.So in short a 555 would do just fine.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399577",
"author": "bzroom",
"timestamp": "2011-05-29T18:54:37",
"content": "I think the reason he doesnt care that the key is held down, or mixed with other keys, is he is likely using a touch screen for input with a custom application that uses no keyboard input.This is a good hack. Which is what we were looking for when we came here.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399582",
"author": "t&p",
"timestamp": "2011-05-29T19:06:38",
"content": "How do you sell kiosks? Some of my family can do pro wood work and I can do the PC and custom software, but who would want it and how would I sell it?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399583",
"author": "shpank",
"timestamp": "2011-05-29T19:20:22",
"content": "It’s actually enough if you take a 3 pin Molex plug and connect the RPM signal to ground. Always worked for me.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399585",
"author": "Max",
"timestamp": "2011-05-29T19:32:05",
"content": "I can see a 30mm fan on ebay that includes speed sensor. It costs £1.99 and free postage. How small does it need to be???Other options would include just putting the “big” CPU fan somewhere else in the build and using the new fan on the CPU powered by a different supply.And for anyone saying “but the original design has a 4 wire fan” a little bit of reading should show you that you can ignore the 4th wire. It is a PWM signal from the m/b to the fan. Without it, the fan just runs at full speed.(He isn’t getting this signal being used with the current hack anyway)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399586",
"author": "Max",
"timestamp": "2011-05-29T19:35:35",
"content": "That said, I do like the idea of single button keyboards. Mainly to hand out to users, map the button to run a browser with google and mark the button “when wanting answers, press me”.Or mark the button “IT Support” and program it to a message popup : “Turn it off and on again” ;-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399593",
"author": "jimchienandalusia",
"timestamp": "2011-05-29T19:58:54",
"content": "I found some 3 wire 25mm fans. They’re going to sound like an idling airliner, but they should be small enough.And to whoever was talking about F1 messing with concurrent keypresses: that’s only an issue if the key is on the same matrix.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399594",
"author": "Whatnot",
"timestamp": "2011-05-29T20:19:13",
"content": "The most odd solution for the issue indeed.I’d also rig a pulse somehow, and preferably one that would actually fail if the fan failed.(My initial thought was 555 though like many others here)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399597",
"author": "Drew",
"timestamp": "2011-05-29T20:28:01",
"content": "Haters gonna hate.I personally would have used a 555 to pulse the key after startup, but whatever. This was a quick and dirty hack, and I think it’s great.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399602",
"author": "Hirudinea",
"timestamp": "2011-05-29T20:53:09",
"content": "Hey if its stupid but it works, it ain’t stupid. Also this hack could be adapted as a prank, no?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399611",
"author": "oldfart",
"timestamp": "2011-05-29T21:27:41",
"content": "A great example of Wallpaper Syndrome.Don’t understand the underlyuing technology – so make something irrelevant to bury the problem for the next generation.If this was submitted as a key hack – great, but to take up the realestate and cost to do something badly is a poor reflection on hacking as a skill.No apologies for this one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399620",
"author": "Daid",
"timestamp": "2011-05-29T21:53:20",
"content": "Funny, I’ve seen machines ask for F1 to continue, when a key was stuck. (It was the same machine that asked for F1 when the keyboard was missing)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399629",
"author": "VV",
"timestamp": "2011-05-29T22:41:24",
"content": "I’ve had stuck keys come up as “Keyboard Failure, Press F1 to continue”Something I always found amusing!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399642",
"author": "edonovan",
"timestamp": "2011-05-29T23:32:41",
"content": "Or he could pull the F1 key off the kiosk keyboard and wedge a piece of paper inside to hold it down.Personally, I file this under “kludge”, not “hack”.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399659",
"author": "mjrippe",
"timestamp": "2011-05-30T00:30:12",
"content": "@Max – Is it plugged in?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399670",
"author": "D_",
"timestamp": "2011-05-30T01:12:14",
"content": "This person used the skills they had to work out a solution to a problem with what they had available to them at the time to keep the project moving, and have the final product perform as desired. While others would have done it differently doesn’t invalidate this solution. The only problem I would see is that it may created a fire hazard, but so would some of the alternates. Another comment applied a wall paper idiom. While that comment didn’t elaborate what it was that was being covered up I’d disagree, because it seems that the kiosk will work for the users as intended. Another called this kludge, fair enough, but I’d submit ALL hacks are kludges to some degree.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399682",
"author": "spiritplumber",
"timestamp": "2011-05-30T01:52:27",
"content": "Looks like a good kludge if you have to get something going NOW. Why all the hate?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399687",
"author": "Hackerspacer",
"timestamp": "2011-05-30T02:23:25",
"content": "I think the “hate” stems in part from the overly elaborate workaround that will inevitably produce a host of unintended effects down the line whenever somebody else tries to modify the system and gets completely unexpected results due to their completely understandable lack of expectation that such a work around would have been used.This hack may have fixed the problem at hand but it has the potential to introduce other unintended side effects, hence the kludgy moniker.As soon as one gets into the habit of implementing these “duct tape” solutions, projects go from well designed to a huge fucking mess (AHFM) rather quickly – and can at times spiral out of control so much as to necessitate scrapping of the entire project and starting over from scratch.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399688",
"author": "Greg",
"timestamp": "2011-05-30T02:31:41",
"content": "Jesus, guys. I doubt the kiosk is a matter of national security. He put something together and it worked. When you submit and have a project published come back and talk smack.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399720",
"author": "stunmonkey",
"timestamp": "2011-05-30T06:31:02",
"content": "1) connect the RPM signal pin to ground.2) spend like 3 bucks on the right sized fan with a sensor plug3) hot glue a freaking opto sensor on the existing fan if all else fails and you really want to keep functionality in the extreme case that #1 and #2 can’t work for some reason.this solution is about #8300000012 on the list, if arranged in an order that makes sense.as for those saying to get a project published; we do create projects, they just wouldn’t publish them here. either they involve too much actual engineering, they don’t involve an arduino, or both. either will get a big fat story spike.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399724",
"author": "TecKnight",
"timestamp": "2011-05-30T07:00:49",
"content": "Am I alone in thinking that this seems like an inelegant solution to a relatively simple issue ? (processor fan has no rpm feed).As Max points out, a compliant fan can be bought on ebay for $3 US.Analysing the root cause of the problem, one should conclude that the fan should be replaced or otherwise rendered compliant, thus eliminating the trip to the BIOS when booting up.Also, I have serious doubts that the shorted key will have no effect on any other keys that do need to be pressed and will cause no issues with the OS.I do admit, however, that the tiny circuit board with the one key on it looks pretty cool.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399730",
"author": "Max (the other one)",
"timestamp": "2011-05-30T07:32:14",
"content": "This does not belong on HaD.This belongs on ThereIFixedIt, right next to the 10001 duct tape “solutions”.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399743",
"author": "Philip",
"timestamp": "2011-05-30T08:04:51",
"content": "Isn’t hacking to do something the best you can and to have the hack function the way you want it?If so, this guy is 2/2.I say well done and keep up the good work.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399754",
"author": "Xb0xGuru",
"timestamp": "2011-05-30T09:44:22",
"content": "Weigh up the time and effort put into this and offset against a few dollars to do the job properly and it becomes a pointless exercise.It’s been posted online, so I assume the guy’s computer literate. How hard would it have been to ask the question elsewhere or at least research a workable alternative?I can’t find one positive for this kludge other than a literal definition of ‘going around the sun to get to the moon’.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399763",
"author": "Philip",
"timestamp": "2011-05-30T10:43:21",
"content": "But now he knows how keyboards work, he knows how to get the key he wants and he got it to work. Knowledge is much more valuable than time, plus he didnt have to spend a penny since he had the donor keyboard.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399775",
"author": "Bob",
"timestamp": "2011-05-30T11:45:21",
"content": "So now when his replacement fan stops his pc overheats and dies? Great hack!Fans with rpm sensors are available at any size, it would have been a much better idea to just get the right sort of replacment.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399790",
"author": "peet",
"timestamp": "2011-05-30T12:42:03",
"content": "why narrow it down to this rpm signal?it’s a nice hack to re-use old fashioned keyboards for ANY purpose!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399791",
"author": "K!P",
"timestamp": "2011-05-30T12:43:31",
"content": "its for a shoestring budged kiosk pc, there wont be a keyboard connect annyway, so no problem with the max keys pressed thing. Also: yeah its crude, but it works!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399794",
"author": "Snobound",
"timestamp": "2011-05-30T13:19:24",
"content": "Don’t people bother to read the post (and the instructable in the link)? He said he had a tiny space to work with and didn’t have the skills to build an emulator for the fan signal. He did have the skill to reverse engineer the keyboard matrix. Add to that a $0 recycle solution.I say KUDOS for this one!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399796",
"author": "blue carbuncle",
"timestamp": "2011-05-30T13:23:33",
"content": "Bravo on the fix but next time just go into BIOS and disable the “Halt on All Errors” option. There are even more sub-options available in most BIOSes. Fixed my problem on my P2 15 years ago lol.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399804",
"author": "Jon",
"timestamp": "2011-05-30T14:10:58",
"content": "Another fan with feedback crammed somewhere else (doesn’t have to cool anything) and extend the wires to plug into the CPU fan header.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399807",
"author": "GameboyRMH",
"timestamp": "2011-05-30T14:17:38",
"content": "If you have absolutely no choice you can rig up a circuit to emulate a fan’s tachometer signal. This is stupid.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399808",
"author": "GameboyRMH",
"timestamp": "2011-05-30T14:20:13",
"content": "Here is what he should have built instead:http://hardforum.com/showthread.php?t=1606397",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399809",
"author": "Tony",
"timestamp": "2011-05-30T14:27:06",
"content": "@blue carbuncle, ‘halt on all errors’ doesn’t cover fan alarms.Still, most BIOSes let you disable those as well, as TFA says his didn’t.Sometimes you build silly things to get around other silly things, make even sillier by having limited options & time.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399821",
"author": "blue carbuncle",
"timestamp": "2011-05-30T15:15:46",
"content": "@ Tony I hear ya :) I had to build my own LPT dongle “key” for Cubase on that same p2 lol. Not knocking his build as I have used WOL to power up another computer that was having (in a nutshell) power button fail issues lol. This was in my younger, more industrious days before the wife and her stink eye about random wires running across the floor ;)Another option would have been an R/C tweak on the fan speed wire to mimic the tics of the fan and tricking it into thinking the fan was spinning but that would involve breaking out the soldering iron real quick. Thanks for the input :)",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,182.040786
|
||
https://hackaday.com/2011/05/29/programming-an-attiny-using-an-arduino/
|
Programming An ATtiny Using An Arduino
|
Mike Nathan
|
[
"Arduino Hacks"
] |
[
"arduino",
"Atmel",
"attiny85",
"AVR",
"isp",
"microcontrollers"
] |
[Scott] is a big fan of the Arduino platform,
and he’s not afraid to admit it
. It does all the things he needs, but now and again he would like to use something a bit smaller, without all the bells and whistles the Arduino has to offer. He contemplated using an ATtiny for smaller projects, but after looking into what he would need to program the chip under Linux, he could never find the motivation to give it a go.
That all changed when he discovered the
Arduino-Tiny project
, which aims to bring a limited Arduino IDE to the ATtiny line of microcontrollers. He found the project to be quite useful, so he put together a brief tutorial that walks through everything you need to get started.
The tutorial is fairly straightforward, and even demonstrates how the Arduino can be used as an ISP for the ATtiny, removing the need to purchase a standalone programmer. Be sure to check it out if you are searching for an easy way to get started with ATtiny chips under Linux.
| 24
| 23
|
[
{
"comment_id": "399517",
"author": "Monty Werthington",
"timestamp": "2011-05-29T16:06:39",
"content": "Nice, a genuine move to enhance the usability of the ATiny chip for the less experienced hacker, reducing the skills required may result in slower execution should be seen as a step in the right direction.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399523",
"author": "kernelcode",
"timestamp": "2011-05-29T16:37:20",
"content": "Correct me if I’m wrong, but the Arduino IDE uses avr-gcc, avr-libc and avrdude, and the Arduino itself can be used as a programmer (http://hackaday.com/2009/07/15/avr-isp-programming-via-arduino/)Lazy much?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399525",
"author": "aggaz",
"timestamp": "2011-05-29T16:42:56",
"content": "Interesting. I want to use a little microcontroller but I don’t work in the electronics field and I have not time to learn another platform/language, so I think that this could be very usefull for me and for people like me.Surely this is not the best solution in terms of performance but is nice to have the possibility to use this stuff.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399527",
"author": "FuzzyOne",
"timestamp": "2011-05-29T16:45:15",
"content": "I’ve been using this technique for the past month, works really well.Don’t forget if your arduino has auto reset to stick a 120ohm resistor on the reset line",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399541",
"author": "Kuy",
"timestamp": "2011-05-29T17:29:37",
"content": "I’m baffled – [Scott] claims that programming an ATtiny the normal way would “require either expensive compilers or hard to use C or Assembler” – how are AVR-gcc and avrdude expensive? And how is coding in C any different than coding in the Arduino’s Wiring language (which is C++)?Maybe the right solution here is for someone to extend the Arduino IDE to compile and flash straight C[++] to any AVR via avrdude-supported hardware..?For all the good the Arduino has done I’m pretty convinced it’s created a fair amount of harm by fostering ignorance :-(",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399543",
"author": "Beat707",
"timestamp": "2011-05-29T17:35:39",
"content": "Perfect! :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399584",
"author": "Anonymous",
"timestamp": "2011-05-29T19:21:35",
"content": "What?“Hard to use C or Assembler”? Arduino is a bunch of macros (and libraries) for C anyhow.Expensive? AVR-GCC is right in the repositories!The only gripe I have with AVR development on Linux is that I could never get AVR Studio’s simulator to work under WINE.Who hasn’t programmed their Arduino in assembler?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399588",
"author": "Anonymous",
"timestamp": "2011-05-29T19:42:30",
"content": "Isn’t this what wiring is for? So basically it’s wiring ported to ATtiny?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399592",
"author": "Reggie",
"timestamp": "2011-05-29T19:57:27",
"content": "It’s great giving access to different chips with avr-tiny but does anyone else think the time seems to be somewhat wasted when there seem to be 5 or 6 projects all servicing the same chips? avr-developer.com seems to support the most in case anyone cares, the MIT stuff I know works too.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399612",
"author": "Jonas Dourado",
"timestamp": "2011-05-29T21:30:18",
"content": "I’ve been programming avr tiny this way for a long time.I use an AVR plugin for Eclipse(http://avr-eclipse.sourceforge.net/wiki/index.php/The_AVR_Eclipse_Plugin) and it works well. The main problem is configuring the avrdude, but some googling solves ;)Disabling reset and using internal oscillator gives 6 io, with PWM and ADC, enough for several projects!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399618",
"author": "trialex",
"timestamp": "2011-05-29T21:51:46",
"content": "@aggaz – great comment.I’m exactly the same – arduino lowered the entry barriers enough for me to get into the microcontroller world. Extending the environment, and more importantly the language to other devices is awesome.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399622",
"author": "Neasi",
"timestamp": "2011-05-29T22:07:23",
"content": "http://translate.google.com/translate?js=n&prev=_t&hl=cs&ie=UTF-8&layout=2&eotf=1&sl=cs&tl=en&u=http%3A%2F%2Fwww.abclinuxu.cz%2Fblog%2Fbystroushaak%2F2011%2F5%2Fjak-na-programy-z-arduina-v-atmega8-bez-bootloaderu&act=url",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399641",
"author": "CMJ",
"timestamp": "2011-05-29T23:29:29",
"content": "I’m all for an Arduino as a prototyping platform for throwing quick and dirty ideas together, but when it comes down to implementing these ideas I think they should be thought out and executed in a fashion that isn’t laden with macro’s and dummy functions. The point of a small uC is simplicity and space constraints, why not take that mentality to the code itself?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399657",
"author": "kernelcode",
"timestamp": "2011-05-30T00:22:04",
"content": "@trialexAs Kuy said, “For all the good the Arduino has done I’m pretty convinced it’s created a fair amount of harm by fostering ignorance :-(”The ‘language’ is C/C++, Arduino merely has some useful libraries. All a language is, is syntax. If you can write Arduino sketches you can write C! You should have a bash, I don’t reckon you’ll find it as hard as you think and you will definitely learn a valuable skill on the way :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399677",
"author": "trialex",
"timestamp": "2011-05-30T01:45:36",
"content": "@kernelcode – I agree that learning the “full” c language would mean I would be a better coder, and be able to do more, but the arduino syntax just makes it so much easier! Compare the code to change a digital pin – I’d rather type Serial.print(); than the equivalent C code everytime – and at 9600bps who cares if it takes and extra clock cycle or two?I totally DISAGREE that it is “ignorance” on my part. The arduino syntax allows me to do what I want with my projects, I’m not ignorant that there is more out there that I could do. Similarly I know basic geometry, but I don’t need to understand fourier transforms for what I do day to day. I know it’s out there though, I could look it up, learn about it and use it if I needed to.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399684",
"author": "therian",
"timestamp": "2011-05-30T02:11:13",
"content": "@trialthere is ignorance on you part. Most people can buils some kind of moving cart on wheels with motor, you can call it a car and it will work but we have to ignore efficiency and possability ithat t will blow up. Same here, the fact that it work for you doe not remove ignorance on subject",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399685",
"author": "therian",
"timestamp": "2011-05-30T02:12:33",
"content": "I hate touch keyboard",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399697",
"author": "grid",
"timestamp": "2011-05-30T03:23:39",
"content": "I’m all for people doing what they want, and if they want to use arduino, fine. But seriously on ubuntu, it took me about all of 5 minutes to get Eclipse w/ AVR plugin and avr-gcc and avr-libc installed using Ubuntu Software Center. It’s actually faster and easier than on windows. avrdude is much clunkier than the nice programmer utility built into avr studio though.And how do you ISP an attiny if you disable the reset line?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399746",
"author": "kernelcode",
"timestamp": "2011-05-30T08:51:41",
"content": "@grid – You can’t without a high-voltage programmer :(@trialex – I can see that, I guess we have different mentalities. For me, it appealed more to write my own USART library – good fun, educational, and can be built to exacting specifications. In any project where you would want to use ‘Serial.print()’ I use#include “../usart/usart.h”……usart_send(“Hello!”, 6)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399751",
"author": "aggaz",
"timestamp": "2011-05-30T09:34:22",
"content": "@therianI think you are basically right, there is ignorance, but your example is just too extreme.Please consider that we are not working with something dangerous that can blow up and that it is really a nice thing to be able to blink a led without having to known all the semiconductor’s physics. It seems to me that people here would like to have some kind of selection on who can blink leds, and I am not sure that this is a good thing.After my first blink, in my spare time I studied and learned a lot of things, and this actually is a decrease in ignorance, even if I am not an engineer and I will never be.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399760",
"author": "rsa",
"timestamp": "2011-05-30T10:19:52",
"content": "Good to know that there are options but claiming that setting up AVR programming in Linux is hard is a bit of a stretch. I, having close to zero EE experience:1. bought the TinyISP2. read this:http://www.evilmadscientist.com/article.php/avrtargetboards3. soldered my own target board for tiny2313 (later I did another one including a rs232 serial port).4. Installed the avr-gcc and skimmed through some examples5. Did some small programs using a text editor and command line tools (avr-gcc, make, avrdude..)6. And later found the AVR eclipse plugin, which is nice.Overall, I consider starting AVR programming in Linux an easy and straightforward task especially when there are masses of tools, documents and information around.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "454803",
"author": "cctsurf",
"timestamp": "2011-09-14T02:51:45",
"content": "I have to disagree with the ideas of some who say that it is ignorance to want to use an easy method to program devices. I have an ee degree, I have made silicon chips, I have programmed in a number of languages, and I use gentoo on my desktop, however, I find it much more user friendly to use the arduino interface and ide than to start from scratch using another system. I am glad when things are made simple for the average user, it used to be said, that a rising tide raises all boats. I am not interested in programming my own usart library, there are perfectly good ones out there. The more people we get working with these microcontrollers, the more will dig deeper and learn the more basic languages, but the more we are purist about them, and say that lfs is the only linux, or that hardcore programming is the only way to program, the more we kill interest in them.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "455093",
"author": "Beat707",
"timestamp": "2011-09-14T12:43:52",
"content": "+1",
"parent_id": "454803",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "533256",
"author": "broken_bazooka",
"timestamp": "2011-12-12T17:28:32",
"content": "The problem with Arduino is the huge amount of assumptions made, and new “concepts” introduced, just about all of them could have easily been avoided.* The weird pin numbering.* Why call C source code sketches? just confusing.* 16MHz crystal assumed and currently very hard to change* Many libs assume certain peripherals on certain IO-pins, you mostly need to dig into some lib header file to change theseThere are simple solutions:1. Since these so called sketch files are heavily preprocessed anyway, why not just have a macro which defines a clockrate, and changes all affected code?2. Same for pins, any lib which is for a hardware peripheral, should *always* be pin-configurable directly from your source code, you shouldn’t need to edit the library.3. There could be a preprocessing step which reads fuse-settings from a macro in your sketch.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,181.95055
|
||
https://hackaday.com/2011/05/29/aquabot-gets-around-more-than-youd-think/
|
Aquabot Gets Around More Than You’d Think
|
Mike Szczys
|
[
"Robots Hacks"
] |
[
"amphibious",
"carbon fiber",
"servo",
"tumbling"
] |
This doesn’t have the flashy futuristic appeal that we’d like to see from high-tech robots, but
this amphibious wanderer
is well suited for it’s intended purpose. It was developed by researchers at the University of Minnesota to navigate mostly wet environments, collecting data about water quality as part of a distributed army of sensor bots.
The two little arms sticking out in front of it are made of carbon fiber and attached to servo motors inside. The video below the fold shows the trapezoidal body tumbling end-over end to get around. But the awkward, baby-turtle-like locomotion isn’t the only thing in its bag of movement tricks. It can also adjust its buoyancy to float, sink, or hover somewhere in the wet stuff.
To get a better look at what went into developing this, take a look at the Adelopod developed at UMN a couple of years back. We also embedded a video of that tumbling robot because they share the build details we’re always on the lookout for.
[youtube=http://www.youtube.com/watch?v=GaAHO9TFlVQ&w=470]
Adelopod:
[youtube=http://www.youtube.com/watch?v=WPEL4JOk7Vs&w=470]
[via
Engadget
and
io9
]
| 12
| 12
|
[
{
"comment_id": "399497",
"author": "CRJEEA",
"timestamp": "2011-05-29T13:31:56",
"content": "I can see the military probably already making good use of this sort of technology in for instance surveillance operations to crawl, hide and listen extra. personally I think they would make great little cheep mine sweepers or terrain mappers (:",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399509",
"author": "kb",
"timestamp": "2011-05-29T15:13:01",
"content": "I’m really curious about how they control buoyancy. I couldn’t readily find any details.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399519",
"author": "CRJEEA",
"timestamp": "2011-05-29T16:22:56",
"content": "-kbI was wondering that too myself. If I was going to do it ivwould most likely end up with some sort of gas filled displacement chamber squashed with a geared down servo or something similar (so as not to take compressed air down that could potentially run out -although the small canisters for fast inflation of bicycle tyres would be good for that)I suppose that hard bit would be making the system small enough. These things are not that large. Light waight though considering all the servos and power source. I’m wondering how long that lasts when it has to operate the control gear and four servos and any potential extras? Maybe solar for land based and some sort of fuel cell charging system for water based applications maybe a hood direction to go in?Would love to see these things deployed in mass from some sort of arial vehicle (:",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399522",
"author": "tooth",
"timestamp": "2011-05-29T16:31:08",
"content": "i am guessing it works like a sub. it has a water ballast tank. When it wants to sink it would take on water thus making it heaver and sink. When it wants to raise to the surface it will use compressed air in a separate tank push water out of the ballast thus making it lighter.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399530",
"author": "twopartepoxy",
"timestamp": "2011-05-29T16:55:46",
"content": "nice,although this would give me the creeps if i saw it coming out of the water towards me.i didn’t see it ‘hovering’ in the video, it either sank or floated (ok, it kind of sat up a bit off the bottom). i guess its harder to get it to actually stay stationary somewhere in between.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399548",
"author": "pingbat",
"timestamp": "2011-05-29T17:55:29",
"content": "I was really hoping someone had found this washed up on a beach somewhere. Maybe one day.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399567",
"author": "pfhh",
"timestamp": "2011-05-29T18:41:42",
"content": "how are they powered, and what’s the battery life on those?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399595",
"author": "Alex",
"timestamp": "2011-05-29T20:19:16",
"content": "“well suited for it is intended purpose”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399601",
"author": "Hirudinea",
"timestamp": "2011-05-29T20:46:54",
"content": "“and here we see film of the first primitive water robots climbing onto land.”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399649",
"author": "ratata",
"timestamp": "2011-05-29T23:46:39",
"content": "“they are a strange species indeed. If we keep still, perhaps we can witness their mating ritual.”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399706",
"author": "D_",
"timestamp": "2011-05-30T05:02:08",
"content": "I hope it doesn’t come out of the water to head towards some mean domestic geese. Because it’s goose might be cooked. Wild geese may take off domestic geese stand their ground. Wouldn’t be great if they could mate, reproduce, free bots. Well on second thought, that could be the stuff a horror movie could be based on.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399729",
"author": "anonymous",
"timestamp": "2011-05-30T07:22:25",
"content": "these remind me of BEAM turbots (http://bestiary.solarbotics.net/2210_turbot_gal.html)",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,182.21446
|
||
https://hackaday.com/2011/05/28/this-robot-can-beat-you-at-pointless-games/
|
This Robot Can Beat You At Pointless Games
|
Mike Szczys
|
[
"Robots Hacks"
] |
[
"gameshow",
"PICAXE"
] |
We already know that robots can be smarter than us as evidenced by Watson beating [Ken Jennings] at Jeopardy, or Deep Blue beating [Garry Kasparov] at chess. Now [E024576] is striving to
build a bot to compete at physical games
.
For the challenge, he’s chosen one of the games from a television game show called Minute to Win It. This challenge is called Mad Dog, and lends its name to this robot. The goal is to pick up a ruler with two tic tac containers glued to it, then shake it until all of the candies are ejected from those containers. Check out what he’s come up with in the clip after the break. The machine is driven by a PIXAXE microcontroller, with input from an IR remote control. It reaches out, grips the ruler tightly, and shakes like there’s no tomorrow. Quite impressive, even if there’s very little purpose in its operation. That makes it the perfect task for robot, right?
[youtube=http://www.youtube.com/watch?v=OP4QTcKo53s&w=470]
| 8
| 8
|
[
{
"comment_id": "399348",
"author": "Matt",
"timestamp": "2011-05-28T21:51:11",
"content": "love it!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399354",
"author": "aztraph",
"timestamp": "2011-05-28T22:13:45",
"content": "wolf",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399410",
"author": "Haku",
"timestamp": "2011-05-29T03:03:46",
"content": "Utterly pointless and a complete waste of time, money and resources – perfect!Are those cinnamon tic-tacs? I think I got a couple of those packs somewhere, wonder what the expiry date on them is.BTW it’s spelt PICAXE, you don’t see me misspelling Ardiuno ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399420",
"author": "daud bukhari",
"timestamp": "2011-05-29T04:33:42",
"content": "This article is nice, but there is a big blunder in this article i.e you say that “robot can be smarter than us” i want to tell you robot is human made thing so how can robot is smarter we make robot not robot make us. I hope you understand.thanks and regards,",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399427",
"author": "JDN",
"timestamp": "2011-05-29T05:54:26",
"content": "Utterly pointless, except to show all manner of motion control with easy to get inexpensive bits and pieces. Good video and explanations, too. I love it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399616",
"author": "xecon",
"timestamp": "2011-05-29T21:42:26",
"content": "crazy idea, nice work :D5 stars :P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400299",
"author": "ga5tly",
"timestamp": "2011-05-31T23:26:33",
"content": "Garry Kasparov was “technically” beaten by Deep Blue, but it is a toss up as to if it was a legitimate win or not. I remember he won the first match between the two, then they met again the next year, and IBM was sketchy about the whole thing. Everything had to be played by their terms as to not be embarrassed again… Just my .02",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400301",
"author": "Shazzam121",
"timestamp": "2011-05-31T23:30:58",
"content": "@Haku: They’re a cinnamon/orange mix",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,182.167509
|
||
https://hackaday.com/2011/05/28/rsa-securid-breach-leads-to-intrusion-at-lockheed-martin/
|
RSA SecurID Breach Leads To Intrusion At Lockheed Martin
|
Mike Nathan
|
[
"Security Hacks"
] |
[
"emc",
"military",
"rsa",
"SecurID",
"two-factor authentication"
] |
It looks like Lockheed Martin is
the latest victim in what seems to be an endless string of security breaches
. This time however, it does not look like a lack of security measures led to the breach. In fact, it seems that Lockheed’s implementation of a widely-trusted security tool was the attack vector this time around.
Last month
we reported on the apparent compromise of RSA’s SecurID product
, and while many speculated that this intrusion could lead to subsequent attacks, the firm downplayed the breach. They stated that the stolen data was unlikely to affect their customers, but as usual, the problem appears to be far larger than originally estimated.
The breadth of the intrusion is currently unknown, and with both RSA and Lockheed officials keeping mum, it may be some time before anyone knows how serious it is. When military secrets are in question however, you know it can’t be good!
| 45
| 45
|
[
{
"comment_id": "399298",
"author": "2uro",
"timestamp": "2011-05-28T19:12:31",
"content": "dear god.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399301",
"author": "thelackey3326",
"timestamp": "2011-05-28T19:25:10",
"content": "You mean a security measure was proven not to be 100% effective? Gasp. Hopefully the REALLY important stuff has a few more walls surrounding it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399302",
"author": "Jeorgo",
"timestamp": "2011-05-28T19:25:38",
"content": "more like deer god",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399303",
"author": "xorpunk",
"timestamp": "2011-05-28T19:28:53",
"content": "F22 anti-radar technology anyone?That makes national power grid, top weapons manufacturer, what else?Also what’s funny is if you go into any of these places it’s mostly contractors from other countries ^^",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399305",
"author": "xorpunk",
"timestamp": "2011-05-28T19:30:16",
"content": "Oh I almost forgot..they use RF encryption for navigation and communication on on-board systems ^^ leaked",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399309",
"author": "xorpunk",
"timestamp": "2011-05-28T19:34:35",
"content": "further trolling: It probably doesn’t help that investors and management at these companies can barely use a computer..especially at lockheed",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399312",
"author": "doktorj",
"timestamp": "2011-05-28T19:39:12",
"content": "The next time a company like RSA gets hacked, I bet the same people will be saying how the information taken, couldn’t possibly be useful. The rest of us will know the truth.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399314",
"author": "Oren Beck",
"timestamp": "2011-05-28T19:46:02",
"content": "@thelackey3326:Those “few more walls” are not just a concept for Military stuff.If someone exploited the machine you are reading this on – what could happen to your life?Arguably the basic concepts of layered access plus nested encryption levels “might” lower risks at an acceptable cost/effort expense. But only if the risk of data loss or other exploits does not warrant true Offline/Air Gap handling of the data. We’ve developed all these elaborate policies up to and including Thermite enhanced computers etc- and all it takes is someone ignoring the rules.I worry more about the risks of ignored rules than all external exploits combined.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399319",
"author": "John P",
"timestamp": "2011-05-28T20:18:28",
"content": "Those securID keychain dongles make a great decoration for my keychain. Since it appears that’s all they are… lol",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399350",
"author": "Olivier",
"timestamp": "2011-05-28T22:02:08",
"content": "@John P : they are keychains which can display numbers. That’s what make them pretty cool :-P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399356",
"author": "truthspew",
"timestamp": "2011-05-28T22:16:33",
"content": "I cannot disclose the company I work for however I can say we had to expand our PIN’s from 4 digits to 8 digits.So at least the company was proactive about it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399357",
"author": "adam outler",
"timestamp": "2011-05-28T22:17:10",
"content": "SecureID is supposed to be a factor of authentication… something you have… but once it was hacked, its just something you know. That is no longer an additional security method.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399374",
"author": "caleb",
"timestamp": "2011-05-28T23:51:56",
"content": "just a thought.. what about more `offensive` methods, like perhaps when a breach takes place, the system automaticly sends a bug back to the intruding machine. a bug capable of first retrieving all data from the attacking computer for use in later legal matters, then basiclly frying the system. a castle doctrine for the internet world.. you break into my computer, i destroy yours. here in ohio, if someone breaks thru my front door, i dump a few loads buckshot at them, and wait for the authorities to come and clean up my kitchen. why cant the same be done for our PCs?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399376",
"author": "Wolfton",
"timestamp": "2011-05-29T00:10:37",
"content": "This really pisses me off for a number of reasons.Those of you who claim that any government secrets are protected by the RSA tokens need to shut up. That’s illegal.Also, those of you who claim that these contractors are not US Citizens also need to shut up. Department of Defense contractors are not able to hire foreign nationals for work on anything that is DoD classified, or on any software coding. That is also illegal.If you don’t know the laws, regulations, and policies, shut your yaps.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399400",
"author": "Steve Z",
"timestamp": "2011-05-29T02:09:24",
"content": "There are going to be more details before one can find out what went wrong. Did these computers have a trojan already on them to track their pin codes and user logins at a specific time? If so, then the only thing you can do is to protect your PC in the first place. RSA keys can only go so far to protect stupidity…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399403",
"author": "E-leeet",
"timestamp": "2011-05-29T02:31:26",
"content": "i’d assume, that one users machine was compromised, as a result the attackers were able to log what token he was using at what time and what their PIN was as well.With that data you can (like you used to be able to for the old tokens with cain and able) determine at which point in ‘time’ the token is at ( you need two naturally) and then log in whenever since the PIN is static..Increasing the Pin length just makes it less likely to guess. Doesnt matter if the box gets key-logged.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399411",
"author": "Chuckt",
"timestamp": "2011-05-29T03:07:12",
"content": "The moronic thing to do is to leave anything of value online. It is just asking for trouble.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399416",
"author": "Oren Beck",
"timestamp": "2011-05-29T03:44:39",
"content": "@Chuckt:Partial agreement.I’d word it with a few qualifiers.It’s sub-moronic to EVER have anything of security risk potentials UNENCRYPTED on any NETWORKED media.Access to anything of a security risk needs to be kept at a “only with clear NEED to access” ruleset. EX: Sales reps have no access need to process chemistry details or CNC files of internal parts etc! Same with an accountant having no need to take home an insecure laptop with the whole fracking projects database including program codebases…And even after the rules of having NEED to even log in on a secured network+ AUDIT TRAIL compliant methods have been 100% baked into the process, ALL even remotely risky info needs to be handled as encrypted folders. Transmitted in an encrypted transport “whatever” methodology.Perhaps up to and including schemes of user-targeted keypairs totally air gap detached from all the other layers?Compromise the RSA factor+PIN and still have to get past robust Audit Trail methods like reverse path logging to “really” gain entry. Let’s say you’ve suborned the human and have their complicity in that basic access layer penetration if spy movie stuff is thinkable here.The end game is over when there’s a few additional steps like a private key needed to decrypt the “jacket” and then generate a challenge/response session to the time sensitive jacket’s inner keypair. Hassle factor multiplication to the hilt, it’s barely “good enough” for some commercial espionage risks, let alone government wrecking secrets.The concept of uh- Disinfo seeding for one case, seems often way underused.. Some of us may seem tinfoil hat paranoids but others of us are too aware of how common crappy security is unremarkable.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399428",
"author": "rlanctot",
"timestamp": "2011-05-29T06:07:13",
"content": "World of Warcraft uses authenticators that look a lot like those (different shell, same six numbers). I wonder if they’ve been compromised as well…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399434",
"author": "Wolfton",
"timestamp": "2011-05-29T06:48:01",
"content": "If a DoD Contractor has anything classified on a network that is exposed to the outside world, then they won’t likely be a DoD Contractor much longer.So that which was allegedly exposed, should only have been company proprietary information. Its a tragic loss, and is likely to contain For Official Use Only information.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399435",
"author": "ejonesss",
"timestamp": "2011-05-29T06:48:52",
"content": "i have seen something like that used by verizon when they login to their setup page for dsl users.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399453",
"author": "Tuttomenui",
"timestamp": "2011-05-29T08:33:48",
"content": "China must have been after more data on stealth, they weren’t happy with samples of material they bought from Pakistan. =)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399463",
"author": "Gert",
"timestamp": "2011-05-29T09:12:44",
"content": "KLIK“SAM system active”“Target aquired”“F35-B detected, programming missile, jamming F35-B communications.”KLIK“Firing”“F35-B destroyed”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399492",
"author": "xorpunk",
"timestamp": "2011-05-29T12:23:34",
"content": "@Tuttomenui: China, Russia, Korea, and some other countries were all suspected to be in on the national power grid control center infiltration..The algo for these dongles were obviously sold on the black-market..Lockheed data is worth even more.What’s funny is it was likely a contracted US based researcher or one of the many many foreign contractors there who got them in ^^",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399511",
"author": "PJ Allen",
"timestamp": "2011-05-29T15:20:33",
"content": "The Beeb has an article, DoD unfazed —http://www.bbc.co.uk/news/world-us-canada-13587785",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399520",
"author": "DarkFader",
"timestamp": "2011-05-29T16:24:03",
"content": "“may be connected” is already a big assumption. Where’s the proof? IP-address match or something.Replacing those SecurID tokens is just a precautionary action. And there’s a whole lot more that just those tokens that might render the network vulnerable.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399521",
"author": "neorazz",
"timestamp": "2011-05-29T16:25:19",
"content": "security = cake",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399524",
"author": "GottaBeThatGuy",
"timestamp": "2011-05-29T16:40:44",
"content": "WTF, when are people going to realize that not EVERY computer needs to be connected to the interwebs. TWO networks are needed people, one in which you face out towards the real world to take care of day to day business. One that is internal and has no connection (I mean fucking none) to the former.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399531",
"author": "Hungry_Myst",
"timestamp": "2011-05-29T17:00:46",
"content": "Oh, the RSA breach back in April wasn’t completely pointless, and there was a reason people should worry?It’s a shame no one could have seen this coming…http://hackaday.com/2011/04/13/rsa-securid-two-factor-authentication-comprimised/#comment-379811",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399537",
"author": "EvilEngineer",
"timestamp": "2011-05-29T17:20:05",
"content": "The problem here in the security compromise wasn’t the RSA keys by them selves. Having the seed # by it’s self is pretty damn useless without knowing where it goes or the PIN to go with it.The big breach here was the phishing and malware attack vectors used to match the seed#’s to users and gain their PINs. Both of these vectors shouldn’t have worked… unless their IT department is inept or their users are idiots. Mostly the latter…Fire those who were phished… even if they were the ceo or board members. They’ve proven they can’t use technology and shouldn’t be anywhere near classified information or weapons technology.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399540",
"author": "thelackey3326",
"timestamp": "2011-05-29T17:22:38",
"content": "@GottaBeThatGuyThey do that already. Where I work, we have the company network, the contractor network, and secure facilities without outside access. Can’t even bring a cell phone in, especially one with a camera (what cell phone doesn’t have one now). You also have three security tasks to perform to gain entry.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399564",
"author": "xorpunk",
"timestamp": "2011-05-29T18:37:34",
"content": "@EvilEngineer: Engineers and technical people don’t lead major companies..if they did no millionaires would invest..Also fortune 500 companies and governments hire by credentials not talent..you think Geohot or some guy who does security frameworks or exceptional RCE could get a permanent job at MS, Apple, or RSA without credentials(whitch they don’t and don’t)? No.What will happen: Some other yuppies will do threat analyses around PR and you’ll see some patch to the server that socially mitigates the threat but in now way solves the problem…But hey look at these comments..everyone has it figured out..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399578",
"author": "Brian",
"timestamp": "2011-05-29T18:56:28",
"content": "@Wolfton Actually they could hire contractors to work on classified materials; it would just require the written permission of the Dept of State and DoD. I would imagine it currently is happening on the JSF since a certain amount of work for every contract has to go offshore. It was part of the deal struck with allies in order to get them to help foot he bill for development (hence the JOINT Strike Fighter).@GottaBeThatGuy Actually, they do have separate networks. I don’t work for LM, however I do work for a company that has many subcontracts with them and in fact used to be a part of LM. I personally have worked with LM Engineers on site. Per DoD requirements, all classified materials must be kept on a separate network. This network is NOT connected to the internet. In fact, the cables are run in an entirely separate conduit. Lockheed computer security is no joke. The have all computers and connections very locked down… it’s almost too tight to get stuff done sometime. I won’t go into any more detail as giving detailed information about their network would constitute a security risk, however I will say that it is one of the most tightly run networks I’ve ever seen.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399590",
"author": "Sinjon Smith",
"timestamp": "2011-05-29T19:43:20",
"content": "All the secure networks I know of are air gaped. Air gaped networks do work, its very hard to hack when have no remote access. BUT as IRAN found out that doesn’t help if your a target and the attacker is persistent and has inside knowledge. RSA was breached for a reason, now we know. Only a state sponsored program goes this far. And you can be sure this is not the end of it, nor will you hear just how BAD it is, RSA would lose more business. A security company that gets hacked, has the keys to the kingdom taken, its proprietary data used to attack its clients. I can see more of this on the horizon.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399676",
"author": "Joelman",
"timestamp": "2011-05-30T01:39:11",
"content": "LM Doesn’t contract out any of their design or engineering, it’s all done in-house.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399681",
"author": "D_",
"timestamp": "2011-05-30T01:50:22",
"content": "The ad on top of the page with the yellow backgroundvulnerability management for dummiesLOLFree download I guess",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399713",
"author": "Anonymous",
"timestamp": "2011-05-30T05:29:16",
"content": "Really sad to report speculation as fact, but the public facts so far are:* Lockheed has announced that the penetration was unsuccessful – they detected it and prevented it* Lockheed HAS NOT announced what was breached, and it’s pure speculation this has anything to do with SecurIDDon’t elevate the speculation of “impartial” security consultants seeking free PR as fact.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399784",
"author": "sandspur",
"timestamp": "2011-05-30T12:13:10",
"content": "LM advertised for some talent after the breach. Very entertaining job description:“Just two weeks ago, Lockheed advertised for a “lead computer forensic examiner” for the center, saying it needed someone who could work in a fast paced environment, understood “attack signatures, tactics, techniques and procedures associated with advanced threats,” and was able to “reverse engineer attacker encoding protocols.”Maybe they were just trolling for a hacker seeking recognition.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399799",
"author": "Tampopo",
"timestamp": "2011-05-30T13:38:25",
"content": "This is great for a reason. If USA become to powerfull is a serious hazard for the rest of nations. USA is the new and only true Skynet.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399806",
"author": "Luke",
"timestamp": "2011-05-30T14:16:07",
"content": "Meh,most government secrets are pretty boring, even at lockheed. Besides, maybe leaking lockheed data to the chinese will put *their* projects behind schedule and overbudget.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399822",
"author": "Miroslav",
"timestamp": "2011-05-30T15:16:21",
"content": "Some stealth aircraft data is known for 12 years, from this incident:http://en.wikipedia.org/wiki/F-117_Nighthawk#Combat_lossI guess you must expect some losses when you attack other countries. Ops, my bad, it was in USA self defense. Somehow on a wrong continent though ;/China can do no better than to make sure that they can defend themselves against another American “self-defense on another continent” error. As soon as invader has to pay a price, it won’t invade anymore.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399824",
"author": "caleb",
"timestamp": "2011-05-30T15:21:56",
"content": "yeah, because America is the only country that defends its self outside its borders. what a bunch of assholes we are huh?ooo jets! *looks outside* i love living next to Wright Patterson AFB",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399833",
"author": "Ron",
"timestamp": "2011-05-30T15:50:00",
"content": "Solution: unplug the Ethernet cable!It amazes me that we allow servers with sensitive data to even be connected to the internet in some way. As long the servers are connected they will be hacked. You would think that people could start using their brains again instead of the constant “bow down to the almighty internet” mentality.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399837",
"author": "Miroslav",
"timestamp": "2011-05-30T16:13:41",
"content": "@caleb: Americans are a great nation that I admire greatly for: idea of real liberty and democracy, technical ability, science, space exploration and other things. Unfortunately, your nation seems to go deeper and deeper into a morass. Old ideals have been abandoned, and you are pulled into conflict with everyone for profits of few. Plutocracy? Military-industrial complex? I don’t know. But things seem to get worse at fast pace.I hope that America will recover to its old ideals sooner than latter. Space exploration, science innovation, and all the good things you are admired for the world over. Not wars.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400634",
"author": "Miroslav",
"timestamp": "2011-06-01T20:42:51",
"content": "Paranoia is spreading: “US Pentagon to treat cyber-attacks as ‘acts of war'”http://www.bbc.co.uk/news/world-us-canada-13614125So they are going to bomb some country because of few hackers inside :) ?",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,182.29519
|
||
https://hackaday.com/2011/05/28/robot-juggler-sure-handles-a-lot-of-balls/
|
Robot Juggler Sure Handles A Lot Of Balls
|
Mike Szczys
|
[
"Robots Hacks"
] |
[
"camera",
"high speed",
"juggle"
] |
This robot juggler
, pictured above during its appearance at
Amper
2010, can keep five balls in the air at once. It was designed by the Department of Control Engineering at the Czech Technical Institute in Prague. We know it doesn’t look like much in that still image, but the two videos embedded after the break are pure gold.
To arms on vertical tracks do the juggling. They can move up and down on said tracks, and circular grippers attached to each can pivot horizontally. A third actuator resides at the bottom of the machine, collecting any balls that might drop, and launching them back into the realm of the juggling hands. A high-speed camera facilitates object tracking in much the same ways that
it’s been used for quadcopter control
.
The objects being thrown around in that protective enclosure are billiards balls. We guess the added mass helps to dampen any small irregularities in the throw or the catch.
[youtube=http://www.youtube.com/watch?v=gIheAjvEiBE&w=470]
[youtube=http://www.youtube.com/watch?v=f2leH_kvg0U&w=470]
| 21
| 21
|
[
{
"comment_id": "399264",
"author": "Unknown",
"timestamp": "2011-05-28T17:36:08",
"content": "“To arms on vertical”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399265",
"author": "Unknown",
"timestamp": "2011-05-28T17:37:03",
"content": "“They can move up and down on said tracks,”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399266",
"author": "Robot",
"timestamp": "2011-05-28T17:38:04",
"content": "It is not high speed camera, I have been talking to the guys at the show. They have models of balls, and predict where the balls are in the space/time.There is a bug in the machine – 3rd arm does have some problem in movement, and doesn’t throw the ball according to the model all the time. The ball will miss it’s windows and fall. Maybe some grease would help :)There is a big 19inch rack standing next to the “robot”, that contains all the electronics needed for the fun.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399270",
"author": "TheCreator",
"timestamp": "2011-05-28T17:41:42",
"content": "I like how it uses real time tracking rather then predetermined physics.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399274",
"author": "Hackerspacer",
"timestamp": "2011-05-28T17:48:51",
"content": "Could this technology be applied to erm… adult machines? My “friend” wants to know.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399276",
"author": "Peanut",
"timestamp": "2011-05-28T17:50:33",
"content": "i just imagine its powerful tiny juggling fists pummelling me into oblivion………",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399282",
"author": "neorazz",
"timestamp": "2011-05-28T18:07:59",
"content": "just great another robot that’s better at something than me…er.i for one welcome our robot overlords!!!!lest they find chainsaws and be controlled by the skynet",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399289",
"author": "balls",
"timestamp": "2011-05-28T18:45:19",
"content": "Holy cow.. No juggling in my neighborhood after 8pm and before 7am.. HOA noise ordinance. That thing’s LOUD!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399293",
"author": "vonskippy",
"timestamp": "2011-05-28T18:56:23",
"content": "And thus the first remote extension of Skynet is born…Help us John Conner, you’re our only hope.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399313",
"author": "RandomReader",
"timestamp": "2011-05-28T19:41:48",
"content": "thats grate ^_^off topic but id love to see the first roller coaster that fires you off its track catching you again carrying right on",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399318",
"author": "Hackerspacer",
"timestamp": "2011-05-28T20:11:56",
"content": "id love to see the first roller coaster that fires you off its track catching you again carrying right onid love to see the first lawsuit that resulted when it missed",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399320",
"author": "BrmLab",
"timestamp": "2011-05-28T20:23:20",
"content": "Cheers fromhttp://brmlab.cz/:-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399333",
"author": "ean bool",
"timestamp": "2011-05-28T20:48:03",
"content": "@Hackerspacer… I’ve been bending my mind in every direction but… what possible applications (in terms of ‘adult’ machinery) could your ‘friend’ have had in mind?I wouldnt let this thing juggle my balls, i’ll tell you that much",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399335",
"author": "Olivier",
"timestamp": "2011-05-28T21:02:38",
"content": "@Hackerspacer : Why ? There are some girls who can manage much more balls than this machine.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399342",
"author": "twopartepoxy",
"timestamp": "2011-05-28T21:36:00",
"content": "very impressive.20 years ago, i would have said this was the stuff of science fiction. the noise sounds like something out of a david cronenberg film.how long do people think it will be before countries are routinely using robots (not just uavs) in warfare, either autonomously (scary) or remotely. I’m saying less than ten years.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399424",
"author": "Stevie",
"timestamp": "2011-05-29T05:19:39",
"content": "Is there any brain to it or does it simply assume that the balls will always take the same route/time?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399470",
"author": "jukus",
"timestamp": "2011-05-29T09:39:47",
"content": "Anyone else get slightly annoyed every time someone goes on about skynet? Meh, maybe I just need some coffee, cool robot, though if what @Robot says is true…its lost its coolness. I would be really impressed if it could handle new ball models on the fly (lighter/more bouncy/oddly shaped).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399579",
"author": "cliff",
"timestamp": "2011-05-29T18:58:13",
"content": "@ twopartepoxyUS Army already has remote control tracked weapons platforms and is using them in several places.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399872",
"author": "m",
"timestamp": "2011-05-30T20:03:41",
"content": "You would hardly find a more useless system, maybe just the leavemealonebox would pass.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400071",
"author": "max",
"timestamp": "2011-05-31T10:22:21",
"content": "In the next decade, I foresee millions of jugglers losing their jobs as CEOs opt for automated systems like this.On the plus side, the increased efficiency of production will flood the juggling market, dropping consumer prices significantly.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "2529396",
"author": "w",
"timestamp": "2015-04-16T11:31:40",
"content": "This is just the beginning. In time these robots will be juggling… OUR VERY LIVES!!!!!!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,182.353887
|
||
https://hackaday.com/2011/05/26/adding-gps-to-a-viewsonic-g-tablet/
|
Adding GPS To A Viewsonic G-Tablet
|
Mike Nathan
|
[
"Android Hacks",
"gps hacks",
"Tablet Hacks"
] |
[
"android",
"g-tablet",
"gps",
"tablet",
"viewsonic"
] |
The hackers over at the xda-developers forum always seem to have something awesome brewing, and [fosser2] is no exception. He bought himself a Viewsonic G-tablet, but was a bit disappointed in its lack of a GPS module. He pried the tablet open in hopes of finding a spot where he might be able to cram one in,
and was happily surprised at what he found
.
It turns out that either Viewsonic had plans to include a GPS module and scrapped them, or they are planning on adding GPS to a future SKU. The tablet’s mainboard already had a spot laid out for the module, as well as the GPS antenna. He carefully soldered in a compatible module from Digikey, and then got to work adding the various other components required to get it working properly.
While the hack doesn’t require that you add a ridiculous amount of parts to the board, you had better make sure your soldering skills are up to snuff before giving it a shot. Those who can’t reliably solder SMD components should probably stay away from this one.
[via
Engadget
]
| 7
| 7
|
[
{
"comment_id": "398180",
"author": "Koplimi",
"timestamp": "2011-05-26T12:32:52",
"content": "There are a lot of soldiers mentioned in the tutorial.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398188",
"author": "fartface",
"timestamp": "2011-05-26T13:15:21",
"content": "?Nice to see a real hack… adding a feature the evil company decided to keep from us…Ha in your face viewsonic!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398264",
"author": "techuelx",
"timestamp": "2011-05-26T17:44:33",
"content": "wow. gps. thanks for this hack trick",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398268",
"author": "Tony",
"timestamp": "2011-05-26T18:02:23",
"content": "Not evil, it’s usually just cost-cutting.As the write-up says, there is probably supposed to be another model (+$).It’s very common, actually, especially with memory sizes. The cheaper item usually has an empty spot where a memory chip should be.Another good trick is firmware differences, cheaper models have different firmware to disable features, even though the hardware is exactly the same as the expensive ones.Often found with whitegoods like washing machines, you don’t need extra hardware to get all of those different wash cycles. Now that’s a bit evil…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398278",
"author": "nwndarkness",
"timestamp": "2011-05-26T18:45:25",
"content": "Gah it is so hard to not be distracted by “solder” being replaced with “soldier”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398361",
"author": "strider_mt2k",
"timestamp": "2011-05-26T22:22:16",
"content": "Android tablets are wonderful to tinker with.Soldier on.Soldier on.(flux off)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398732",
"author": "GameboyRMH",
"timestamp": "2011-05-27T22:15:29",
"content": "You can run MeeGo on these tablets too:http://wiki.meego.com/ARM/TEGRA2#Viewsonic_G_Tablet",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,182.401387
|
||
https://hackaday.com/2011/05/26/long-range-canon-dslr-remote-video-trigger/
|
Long-range Canon DSLR Remote Video Trigger
|
Mike Nathan
|
[
"Arduino Hacks",
"digital cameras hacks"
] |
[
"arduino",
"camera trigger",
"Canon 60D",
"ir",
"RF"
] |
Instructables user [Justin] generally enjoyed shooting video with his Canon 60D DSLR, though there was one small problem. The only way that the camera could be remotely triggered to shoot video was via a small IR remote with a paltry 10 foot range. Even worse, the remote had to be pointed directly at the front of the camera to work at all. To remedy the situation,
he decided to rig up his own long-range trigger mechanism
.
He cobbled together an Arduino with components he had sitting around, mounting it in a project box on top of the camera. A commercially available RF remote shutter release is also mounted on the top of the camera, and wired to the Arduino using a small 2.5mm plug. When he activates the RF remote, it sends a pulse to the Arduino, which in turn sends the appropriate signal to his camera via a small IR LED.
While he readily admits that he could have likely used a much simpler configuration, the Arduino does its job, and he’s quite happy with his solution. We agree with him about the Arduino, but it’s hard to argue with saving money by using components you already have on-hand.
| 8
| 8
|
[
{
"comment_id": "398167",
"author": "lamer",
"timestamp": "2011-05-26T11:31:54",
"content": "uhm….im just putting it out there as an option..what about just taking apart that 2$ ebay ir remote. and hook that RF remotedirectly to its button..possibly through a transistor if needed.and loosing that arduino all togethersmaller box. and much longer battery life!…just sayin..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398189",
"author": "fartface",
"timestamp": "2011-05-26T13:16:57",
"content": "Or commanding the camera through the USB port… sounds like he did not research it much, the command protocol os documented online and people have duinos doing things to these canon cameras.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398217",
"author": "st2000",
"timestamp": "2011-05-26T14:59:33",
"content": "Anyone know if the Canon camera can “talk back”? Or if there is a START-RECORDING & STOP-RECORDING IR command? I ask as with most video cameras the record button is a toggling function. Which always leaves me wondering “am I recording now?”.@fartface(“no offense”)Assuming the Canon is a USB peripheral, that would mean, in order to control it, you would need a USB host. Not something easy to do! In fact, most embedded processor are not up to it.Anyone know if any variation of an Arduino is up to it (being a USB host)?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398219",
"author": "invader",
"timestamp": "2011-05-26T15:05:36",
"content": "This could also likely be done useing a launchpad. Which would Mean it could be cheaply reproduced, have an illogically high battery life, it would be tiny and maby even microscopic compared to haveing a whole arduino board in there, quicker response time due to no bootloader, he wouldent have to change much due to that awesome new package that pretty much makes it so it can use arduino sketches, and the list of benefits goes on and on! And as a plus to the community of ppl who rushed to get em it would be getting use out of their launchpads",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398221",
"author": "Invader",
"timestamp": "2011-05-26T15:10:09",
"content": "Shoulda used a launchpad. The bonuses of useing one is almost endless. Includeing a rediculous battery life. And ppl would actually get use of the damn things because they aren’t used often compared to an arduino yet there are tons of em floating around.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398234",
"author": "Renee",
"timestamp": "2011-05-26T15:39:00",
"content": "There is a small headphone jack on the side too that can control basic features. Depending on what you ground you can either focus the camera or take a picture.I think if it’s set to video that will initiate video capture. The library of Canon USB commands can be found here:http://www.circuitsathome.com/category/camera-control",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398247",
"author": "Justin",
"timestamp": "2011-05-26T16:06:02",
"content": "@Renee – The 2.5mm jack on the side does NOT control video unfortunately, otherwise, I wouldn’t have had to go thru all the trouble, I would have just used the off-the-shelf remote. USB control might be a great project enhancement down the road.@Fartface – Price, time and my limited knowledge were taken into consideration. I saw the USB option, but researching it, figuring it out, buying the extra parts, etc weren’t what I was looking for. I used what I had and a trip to the local electronics store.To everyone else, thanks! I know there are simpler, cheaper, easier ways to do this. I used what I had on hand. Keep the ideas coming.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398267",
"author": "macona",
"timestamp": "2011-05-26T18:01:45",
"content": "@ReneeThe one thing that the jack cannot do is trigger video. The only way to stop/start video recording is with the button on the back of the camera or the IR. Not sure about video over USB though. I know if you trigger the jack while you are doing video it will make the camera take a still. Just like the shutter button, after all the button and jack are wired parallel.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,182.444921
|
||
https://hackaday.com/2011/05/25/arduino-based-biofeedback-unit/
|
Arduino Based Biofeedback Unit
|
Mike Szczys
|
[
"Arduino Hacks"
] |
[
"biofeedback",
"brainbay",
"galvanic skin response",
"gsr"
] |
[Michael Gerstenmayer] has been very successful in
developing a biofeedback system
. He’s based the build around an Arduino and started adding different chunks to the project to develop a full-featured unit. It can take your temperature (with an IR sensor…. not the hard way), measure your
galvanic skin response
(conductance), and produce feedback based on this data. Interestingly enough, he built a peripheral vision feedback system based on the glasses frames seen above. They have an LED on each side which are illuminated based on the sensor data.
By using the Arduino’s USB connection the data can also be processed by a PC. [Michael] spent some time working with an open source program called
BrainBay
to gather and map the stream from the sensors.
We enjoyed reading about the build, but there’s no information about what he’s got planned for this project. That shouldn’t stop you from setting up your own rig and using it as a lie detector, or for
the devilish purposes we’ve seen in the past
.
| 4
| 4
|
[
{
"comment_id": "398008",
"author": "TensorFlux",
"timestamp": "2011-05-25T22:13:23",
"content": "This is quite similar to a very well documented project that Pumping Station: One built for the Great Global Hackerspace Challenge:http://wiki.pumpingstationone.org/index.php/Biosensor_Array",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398162",
"author": "Vanessa",
"timestamp": "2011-05-26T11:05:39",
"content": "Nice work! :) Michael could play with it like we have, getting people to interact on a biometric level…. a little bit of critical design, forcing people to own up to their emotions and biometric responses in social situations. :)http://geekphysical.com/biometrics_fdc.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398232",
"author": "Matt",
"timestamp": "2011-05-26T15:32:51",
"content": "Oooh, good to see people utilizing BrainBay! Only thing it’s missing is EEG, then you could try and gauge level of attention/relaxation.Vanessa, I love the idea of that kind of feedback. I just recently launched a kickstarter project athttp://kck.st/lQp25nto develop a wireless multi-channel EEG that could definitely be used for “critical design.”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6752062",
"author": "Daire",
"timestamp": "2024-04-21T17:07:16",
"content": "The link to Michael’s project is dead and I can’t find it on wayback machine or even google‘s cahce. Anyone able to help me out?",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,182.484565
|
||
https://hackaday.com/2011/05/25/ps3-controller-spoofing-advancing-with-leaps-and-bounds/
|
PS3 Controller Spoofing Advancing With Leaps And Bounds
|
Mike Szczys
|
[
"Linux Hacks",
"Playstation Hacks"
] |
[
"bluetooth",
"dongle",
"mac address",
"sixaxis",
"spoof"
] |
Development has been progessing quite nicely on [Matlo’s] PlayStation 3 controller spoofing project. This is a
package that allows you to identify a PC as a PS3 controller
. We know what you’re thinking: why would you want to do that? When
we originally looked in on the project
about a year ago we mentioned that this allows you to use any Linux-friendly peripheral as a PS3 controller. In the clip embedded below you’ll see that nothing beats a good keyboard and gaming mouse when it comes to first-person shooters. [Matlo’s] solution not only allows you to use alternative control hardware, but there’s almost unlimited configurability.
And speaking of configuration, he’s done a ton of work on the GUI. After the initial package installation no terminal typing needs to be done to get the system configured. Once in place, you can set the MAC address of a Bluetooth dongle to spoof the address of your SixAxis controller. From there you can set up the button mapping, calibrate mouse hardware and the like, and even program macros (fantastic). Now go out and pwn everyone at deathmatch now that the PlayStation Network is back up and running.
[youtube=http://www.youtube.com/watch?v=MyxK8Pd1vds&w=470]
| 26
| 25
|
[
{
"comment_id": "397966",
"author": "Alex Parting",
"timestamp": "2011-05-25T20:55:38",
"content": "Nice one, he’s not great with a mouse and keyboard though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397972",
"author": "Tim",
"timestamp": "2011-05-25T21:05:38",
"content": "Very cool, but could it be done for Xbox 360?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397974",
"author": "monkeyslayer56",
"timestamp": "2011-05-25T21:06:45",
"content": "finally a reason to consider a console. I still probably wont get one because my (albeit ageing) PC still outdoes consoles hardware wise, but when i go to friends at least now i have a fighting chance :) Now time to prove keyboard+mouse > controler",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397977",
"author": "Colecago",
"timestamp": "2011-05-25T21:15:57",
"content": "Still waiting for good software to talk ps3 controller to pc.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397982",
"author": "Stryker",
"timestamp": "2011-05-25T21:24:50",
"content": "@Colecago: try GlovePIE. I personally think it’s one of the best pieces of software written.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397984",
"author": "NatureTM",
"timestamp": "2011-05-25T21:25:47",
"content": "Does this suffer from limited velocity like the old Xbox stuff? As an example, on a pc, the view shifts as quickly as you can move the mouse. On some implementations of mouse to joystick mapping, there is an upper limit on how quickly the view will rotate. This was due to the limit on how far you can move the joystick to the side. ie if you move the mouse really fast to the right, the view could never rotate faster than joystick-maximum-right would do. Thanks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397986",
"author": "Maave",
"timestamp": "2011-05-25T21:31:22",
"content": "This is sweet but it’ll be a problem for fair competition. People using controllers will get destroyed by the mouse/keyboard users and there’s probably no way to verify if someone is using a controller. Perhaps some aspect of joystick movement could be checked, like moving the joystick in a smooth circle since a motion like that would be nearly impossible to replicate on a mouse.@Colecago: the best software that I’ve used is MotionInJoy. It’s not great but it works, it makes the PS3 controller show as a DirectX input device.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397989",
"author": "keenox",
"timestamp": "2011-05-25T21:37:06",
"content": "isn’t it simpler to just plug in an usb mouse and keyboard into the ps3?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "2568653",
"author": "JasperTheMonkey",
"timestamp": "2015-05-15T16:57:08",
"content": "No! You NEED a controller. If u could do that, then would this software be written?",
"parent_id": "397989",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "397998",
"author": "cknopp",
"timestamp": "2011-05-25T21:53:50",
"content": "No couple this with an OpenCL facial recognition software, and will just be puters pwning puters…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398000",
"author": "anon",
"timestamp": "2011-05-25T21:55:59",
"content": "@keenox: Most game developers don’t support mouse and keyboard, which is really stupid. The PS3 supports it but the games have to explicitly support it for it to be used in a game.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398067",
"author": "Pete",
"timestamp": "2011-05-26T01:32:01",
"content": "At the moment, a custom controller for a PS3 seems about as useful as a navigation system on a car that’s missing a wheel.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398081",
"author": "Grayda",
"timestamp": "2011-05-26T03:01:41",
"content": "Uh oh, someone’s found out something about the PS3. Put on a belt because Sony’s gonna sue your pants off!Then get millions of accounts leaked again.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398086",
"author": "Stevene",
"timestamp": "2011-05-26T03:15:20",
"content": "hmm… this has got me thinking of a hardware emulator (possibly concept) that replaced the DVD drive in a 360 with a hard drive enclosure w/ hard drive, that had disc images on it.From what I remember it has a lcd and scroll buttons that let the user select the image. Once selected it would load the image, and from the 360 point of view, a disc would have been inserted.anyone else remember this? or have a link?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398094",
"author": "Stevene",
"timestamp": "2011-05-26T04:01:38",
"content": "I found this website,http://linitx.com/viewproduct.php?prodid=12992, that has something similar but not for 360",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398115",
"author": "Anonymouse",
"timestamp": "2011-05-26T05:57:23",
"content": "The curb stomping will be delicious.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398120",
"author": "Taylor Cox",
"timestamp": "2011-05-26T06:08:27",
"content": "Fuck PC gamers….I’ll pawn you with my ps3 controller..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398145",
"author": "BiOzZ",
"timestamp": "2011-05-26T08:59:10",
"content": "FINALLY! all the fun of a pc with all the identity theft of a ps3!http://www.gmanews.tv/story/221293/technology/sony-psn-hacked-again-100-m-users-info-stolenthink your safe after the update?think againhttp://www.pcworld.com/article/228632/new_sony_hack_nabs_user_data_of_2000_customers.html@Taylor Coxmicrosoft games learned the hard way that pc gamers are 50-80% better with there cloud “bridged” gaming projectsimple facts, more buttons, faster aiming with mouse, more precise aiming, quicker reflexes, better graphics, better AI, higher definitions, quicker team speaking over text and many more factors microsoft claims that cloud gaming is imposable with current consoles :Pand besides the PS3 uses a graphics card i had in 2008 2 cards ago XP",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398168",
"author": "wosser",
"timestamp": "2011-05-26T11:35:16",
"content": "Can it be modified to play kinect games with an old-school pong paddle?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398201",
"author": "CG",
"timestamp": "2011-05-26T14:10:38",
"content": "Hey! Here’s a novel idea! Why not learn to play the games using the same controller that all of your competitors are using, rather than spending time finding ways to win more easily without actually improving your abilities?I hope Sony finds a way to detect this sort of cheating and bricks all of your consoles.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398256",
"author": "sqny",
"timestamp": "2011-05-26T16:34:55",
"content": "@CG – I hope Sony just bricks all of your consoles by accident.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398261",
"author": "dontpanic",
"timestamp": "2011-05-26T17:15:34",
"content": "@CG“I hope Sony finds a way to detect this sort of cheating and bricks all of your consoles.”I thought I paid for my ps3? Don’t I own it? Sure, I shouldn’t be able to use my mouse and keyboard on PSN (if its ever up again), but why should Sony have the power to destroy something that is mine?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398388",
"author": "Agent24",
"timestamp": "2011-05-27T00:49:43",
"content": "@CGDon’t be pissed off just because game controllers suck for FPS… why should we try to learn to use some crappy controller so we can suck at the game?Mouse\\keyboard and PC in general is superior, as BiOzZ said.If you don’t like sucking at FPS games, get a PC.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398511",
"author": "STOSW",
"timestamp": "2011-05-27T11:13:10",
"content": "Would it be possible to hook up USB keyboard and mouse to the teensy board and use them directly?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398688",
"author": "Blue Footed Booby",
"timestamp": "2011-05-27T20:41:46",
"content": "God game platform elitists are the most annoying fucking thing.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400227",
"author": "k1LLb0x",
"timestamp": "2011-05-31T19:47:16",
"content": "Finally my many years of cs1.6 and source are gonna pay off… ahahaha.. but still feel sorry for the gamepad guys… :( Matlo FTW!!.. =P",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,182.547259
|
||
https://hackaday.com/2011/05/25/automated-hose-keeps-cats-from-watering-you/
|
Automated Hose Keeps Cats From Watering You
|
Jesse Congdon
|
[
"how-to",
"Misc Hacks"
] |
[
"cats",
"hose",
"pir",
"urine"
] |
Commenter [TheCreator] reminded us of this fantastic video from [
Craig Turner
] who you may recognize from SBS’s Top Gear Australia Video Competition. You see, [Craig] has been struggling for some time with the problem of neighborhood cats relieving themselves pretty much all over his stuff. Through surveillance he identified (and named) around 9 separate cats sauntering into his yard during the wee hours of the night. The only issue now was to humanely discourage them from entering his yard.
The best solution, in this case, was a simple spray from the garden hose, but who is going to stay up all night to watch for cats? [Craig]’s ’75 Galant happens to have aftermarket door locks. These typically contain a simple powerful 12V actuator that will push or pull when given current. The actuator is strong enough, and has enough travel, to depress your typical garden sprayer handle. The lock actuators even include enough mounting hardware to tack everything together. The only irreversible part of the hack appears to be the hole drilled into the sprayer’s handle.
The job of cat detection is handled with a PIR sensor (sourced from his home security system) and a paper towel tube to narrow the detector’s field of view. Placed at animal height the PIR detector works like a trip line, and flips a relay connected to an array of devices: A bright LED lamp, a DSLR set to take several quick photos of the victim, An HD video camera, and the sprayer solenoid. This whole rig is placed at a convenient choke point and hilarity ensues! A schematic is included in the video but is pretty difficult to interpret, we transcribed it for you. Some details are unclear but essentially a few relays are stapled together to provide either high or low switching signals.
Check out the video, [Craig]’s schematic, and our interpretation of [Craig]’s schematic after the jump!
[youtube=http://www.youtube.com/watch?v=uIbkLjjlMV8&w=470]
| 50
| 49
|
[
{
"comment_id": "397934",
"author": "Tech B.",
"timestamp": "2011-05-25T19:34:51",
"content": "I just posted this on Facebook yesterday lol. I found it via techeblog.com; great website to pass the time.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397941",
"author": "NK",
"timestamp": "2011-05-25T19:50:04",
"content": "Hey guys, are you playing with the websites themes-backgrounds?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397942",
"author": "BiOzZ",
"timestamp": "2011-05-25T19:53:03",
"content": "haha my friend linked me on youtubeWTF happened to the awesome looking site?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "397945",
"author": "Caleb Kraft",
"timestamp": "2011-05-25T19:55:13",
"content": "@I done goofed up. It should be fixed now.",
"parent_id": "397942",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "397955",
"author": "dmcbeing",
"timestamp": "2011-05-25T20:24:23",
"content": "This has to be the best hack video i’ve ever seen on hack-a-day ever :D.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397959",
"author": "Kibodwin",
"timestamp": "2011-05-25T20:32:50",
"content": "I need something like this and was thinkingof solenoid and a pan tilt hooked up toa garden hose. Then have a webcam detectmotion and have the pan tilt spray that area.I found lots of info on the needed bits hereit is just a matter of putting it together andtesting. I also have foxes which if I couldleave alone would be cool.K.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397962",
"author": "dmcbeing",
"timestamp": "2011-05-25T20:35:09",
"content": "That H??? relay should be Horn relay according to the video.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397965",
"author": "xorpunk",
"timestamp": "2011-05-25T20:42:44",
"content": "nice way to drive a ten cent nail with a 20k hammer ^^You could of done this with under ten dollars in electrical components and garden hardware..It wouldn’t of been millionaire style I guess..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397967",
"author": "NeatBasis",
"timestamp": "2011-05-25T20:57:46",
"content": "That last cat’s like auditioning for the next matrix movie. :D Really cool hack.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397968",
"author": "PoisonWaffle",
"timestamp": "2011-05-25T20:58:18",
"content": "Friggin’ awesome idea, and a great video!Totally subscribed to the dude. Props!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397969",
"author": "Morgauxo",
"timestamp": "2011-05-25T20:58:34",
"content": "Ok that is awesome. Did you really disable your car and home security system to do it though? You might want to check out your local junkyards and/or Ebay!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397970",
"author": "TheCreator",
"timestamp": "2011-05-25T20:59:25",
"content": "Love it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397976",
"author": "Queeg",
"timestamp": "2011-05-25T21:15:35",
"content": "I wonder if the cats would learn faster if it triggered a paintball gun instead of a hose.Only one way to find out.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397980",
"author": "The DON",
"timestamp": "2011-05-25T21:22:25",
"content": "I laughed so hard I cried.Awesome video.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397981",
"author": "Keith",
"timestamp": "2011-05-25T21:23:52",
"content": "Love the disclaimer at the end of the vid. And here I thought just the USA had irresponsible pet owners. Guess they are everywhere.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397983",
"author": "Matt",
"timestamp": "2011-05-25T21:25:34",
"content": "HAHAHA classic, love it. Could have hooked it up to a different type of trigger. Paracetamol (Tylenol) and tuna works also. Personally I have a low lying electric fence round my garden. Mint Galant too!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397985",
"author": "sean",
"timestamp": "2011-05-25T21:26:26",
"content": "My stomach hurts from laughing so hard!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397990",
"author": "James",
"timestamp": "2011-05-25T21:43:52",
"content": "@Matt – pathetic person you are.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397994",
"author": "anonymouse",
"timestamp": "2011-05-25T21:49:00",
"content": "@matt – I can’t believe you’re suggesting poisoning people’s pets.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397997",
"author": "leniu",
"timestamp": "2011-05-25T21:52:36",
"content": "I have that same problem with dogs. I must tray it :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397999",
"author": "PocketBrain",
"timestamp": "2011-05-25T21:54:39",
"content": "“the wee hours…” HAA! I see what you did there!Seriously, I have considered hooking up my sprinkler system to a motion detector. That @#$& neighbor’s mutt keeps paying my lawn a visit. It just ain’t right.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398009",
"author": "Elias",
"timestamp": "2011-05-25T22:14:52",
"content": "Hilarious video :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398013",
"author": "Fileark",
"timestamp": "2011-05-25T22:29:54",
"content": "What a terrific vid! Its hacking and funny cats, can’t beat it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398026",
"author": "supershwa",
"timestamp": "2011-05-25T23:06:02",
"content": "Hahahahahaha can’t hahahahaha stop hahahahahaha laughing hahahahahahahahaha",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398030",
"author": "MrX",
"timestamp": "2011-05-25T23:35:05",
"content": "Wow! The build is quite simple but it sure works. And the way they put it in the video is really a success! I love it! :DI beg for a improvement now. Maybe add some pan tilt mount with a IR camera and hose attached. That should teach them :)I would also replace the mechanical relay with a electronic one cause I think the cats might be hearing the “click” which is giving them some precious time to start jumping.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398046",
"author": "miked",
"timestamp": "2011-05-26T00:02:58",
"content": "I though of this one used for deer:http://www.amazon.com/dp/B000071NUSThis post reminded me to look for the deer deterrent for my sister. She has around a dozen deer in her yard every night eating up the garden, shrubbery, flowers, etc.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398075",
"author": "menotme",
"timestamp": "2011-05-26T02:43:47",
"content": "two words…coyote urinethough I love a good cat foiling",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398082",
"author": "Hirudinea",
"timestamp": "2011-05-26T03:03:26",
"content": "Everybody loves a wet pussy but did he have to disassemble his car to do it!? (But then again considering the car, that was probably the best use of it.)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398084",
"author": "Stevie",
"timestamp": "2011-05-26T03:11:37",
"content": "There’s been some really great stuff on HaD this week. Nice one!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398087",
"author": "Stevie",
"timestamp": "2011-05-26T03:23:58",
"content": "The idea seems solid enough but did it really need to be such high pressure? I think it would be more humane and just as effective (or ineffective as the case may be) to spray water at them at a much lower pressure.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398095",
"author": "CatEater",
"timestamp": "2011-05-26T04:01:54",
"content": "They still have fur on them. I say the pressure isn’t high enough.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398097",
"author": "salomon",
"timestamp": "2011-05-26T04:07:25",
"content": "I just cant stop laughing! OMG this is one of the funniest videos I’ve ever seen.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398101",
"author": "Digital",
"timestamp": "2011-05-26T04:22:52",
"content": "this isn’t exactly a new idea, I saw almost the same thing YEARS AGO!http://www.plasma2002.com/blenderdefender/very funny regardless. Love the names of the cats!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398116",
"author": "rossmarsden",
"timestamp": "2011-05-26T06:00:08",
"content": "Excellent!And the first time I have heard “solder” pronounced properly in projects featured on this site.Sodder? What is sodder?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398136",
"author": "Ashish",
"timestamp": "2011-05-26T07:31:33",
"content": "Looks awesome, but his website seems to be down because of all the traffic.Well, that’s the downside of getting featured on Hackaday. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398141",
"author": "monster",
"timestamp": "2011-05-26T08:18:52",
"content": "that was a lot funnier than i was expecting a build log to be",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398148",
"author": "JDN",
"timestamp": "2011-05-26T09:30:00",
"content": "The video’s well done and fun to watch.For controlling the water, I’d recommend a solenoid valve from an old washing machine. Even new, I can’t see that costing much.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398163",
"author": "Nicholas Farshidmehr",
"timestamp": "2011-05-26T11:05:47",
"content": "I would just stay up all night and shoot the cats.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398166",
"author": "KanchoBlindside",
"timestamp": "2011-05-26T11:30:42",
"content": "@ Matt, you know that is fatal at human doses, right? That’s a felony, and if caught you’d get more TV time than killing a person in most cases.I think the point of this was to NOT kill them, but really %#$@ with them without any harm (other than the cat itself trying to GTFO).I started laughing at “wee hours of the night” in the HaD description.Intended?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398174",
"author": "Whatever",
"timestamp": "2011-05-26T11:49:13",
"content": "That’s awesome! Great video and presenting, I laughed my ass off!Now regarding the motion sensor, most of them are simply closing a relay when tripped. No need to solder into the LED. 60€ for a state of the art Honeywell motion sensor, new. Probably less pricey than disabling a zone on the alarm panel of your house :)And if I left a couple of cameras in my yard at night, they’d be stolen in the next hour.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398178",
"author": "Jesse Congdon",
"timestamp": "2011-05-26T12:24:09",
"content": "@KanchoBlindside, I have to admit, it was a happy accident :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398282",
"author": "Ink",
"timestamp": "2011-05-26T19:04:08",
"content": "My dad actually set up something like this years ago. He wired several of the motion detectors (which he took off of the motion lights) into one of the sections of our sprinkler system. It was to keep the dogs from digging on the yard and worked rather well. Anytime the dog would walk on the yard the sprinklers would turn on until they walked off of the yard. Only problem was that sometimes a bird would fly by, or on windy days the trees would sway back and forth causing it to go off all the time.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398521",
"author": "Igor Peixoto",
"timestamp": "2011-05-27T12:12:33",
"content": "Awesome! Every hack should come with a video like this, LOL",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399184",
"author": "Reza",
"timestamp": "2011-05-28T15:18:17",
"content": "Hackaday is screening my emails. I sent this link in 2 weeks ago and they ignored it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399496",
"author": "Marius",
"timestamp": "2011-05-29T13:19:34",
"content": "Good stuff. I could not stop laughing :) thanks!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399591",
"author": "cyplesma",
"timestamp": "2011-05-29T19:50:04",
"content": "didn’t read all the comments, but you can always use the 120 ac volt controlled water inputs of a washer. hook up the main line to the common of the control and you can control the outputs with 120 volts ac. It gets you two outputs. Can be easily scaled up.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399989",
"author": "Don",
"timestamp": "2011-05-31T05:11:26",
"content": "You can buy a device that has the pir and valve already. Called a scarecrow. Otherwise a valve from a sprinkler system would be much more reliable.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "403261",
"author": "Craig Turner",
"timestamp": "2011-06-09T02:22:48",
"content": "Hey, awesome write up! best description I have seen! and nice work with the interpretation of the schematic. My mock up was mainly for entertainment purposes so it is a little misleading but you have encouraged me to draw it up properly when I get a chance and I will put it on my web site.FYI for anyone interested for now, in short;Basically every device had an independent power supply (battery & 240 volt) other than the actuator and relays. The HD cam was independent running to a DVR card with motion detection via software, thus to allow pre roll on the video. I also used a timer kit to allow the LED lamp and shutter switching on the camera to stay on a few seconds after the spray finished. The LED lamination time on the PIR was perfect duration for the spray duration though.Thanks for posting and I will try and get some details up online for those interested.CheersCraig Turner.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "403425",
"author": "Jesse Congdon",
"timestamp": "2011-06-09T12:39:38",
"content": "Hi Craig! I couldn’t fit the cat in the drawing though, making my interpretation wildly inaccurate. Also doesn’t that PIR detector already have a relay (or opto isolated switching circuit)? No need to waste precious angle grinding time at the soldering station. The AC cable was also reduced ’cause I had no space, 470 pixels wide is tiny :( Oh I think the lamp is a bit messed up too in my drawing (no ground for the switching signal input), anyway the idea is there! That video is a feat of tongue-in-cheek hacking we can’t wait to see more!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "407103",
"author": "Smaug",
"timestamp": "2011-06-17T14:02:49",
"content": "I can’t stop laughing!! It’s beautiful!!I made years ago an wire electrifier with a motorcycle HV coil to stop the cats to enter my property. It was also funny, and in a couple of days no cat was brave enough to repeat the experience.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,182.693588
|
||
https://hackaday.com/2011/05/25/color-object-tracking-with-an-8-bit-microcontroller/
|
Color Object Tracking With An 8-bit Microcontroller
|
Mike Szczys
|
[
"Microcontrollers",
"Video Hacks"
] |
[
"arm",
"c8051f360",
"color tracking",
"omnivision",
"ov7720"
] |
[Craig] sent in a link to this project which manages to implement
color tracking on an 8-bit microcontroller at 60 frames per second
. That’s some pretty incredible performance, but we’re also not talking about using a hobby-grade microcontroller. The
C8051F360
is an ARM microcontroller with 100 MIPS throughput and with a system clock that can operate at up to 100 MHz. You also must consider that the chip will be able to do nothing else while in the tracking mode. Even with those gotchase, it’s still pretty incredible.
The setup uses an Omnivision OV7720 camera module. It has its own 24 MHz clock, which is used as the clock signal on the microcontroller’s PLL to generate a 96 MHz system clock. The code, which is written in a combination of C and assembly language, pushes captured tracking data to a PC via a serial port connection. After the break you can watch a bare-bones demo video that illustrates what the camera sees and what data shows up on the PC.
If you had the system in hand, what would you use it for? Perhaps it’s a perfect addition to that
paintball sentry gun
at which you’ve been hacking away?
[youtube=http://www.youtube.com/watch?v=bAp0si1BOo8&w=470]
| 20
| 19
|
[
{
"comment_id": "397913",
"author": "Tywin",
"timestamp": "2011-05-25T18:43:26",
"content": "For the record, a C8051F360 is, as the name suggests, an 8051 microcontroller, not an ARM.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397916",
"author": "sqkybeaver",
"timestamp": "2011-05-25T18:50:17",
"content": "the c8051f360 is an intel 8051 variant manufactured by silicon labratories",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397917",
"author": "Ferdinand",
"timestamp": "2011-05-25T18:56:22",
"content": "The C8051F360 is not an ARM processor but an 8051 derivative (http://de.wikipedia.org/wiki/8051).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397918",
"author": "Jim",
"timestamp": "2011-05-25T18:59:13",
"content": "The C8051F360 is an 8051 core MCU, not at ARM.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397923",
"author": "dan",
"timestamp": "2011-05-25T19:13:11",
"content": "you know what. now i may be wrong… but i think it’s not an arm. but i mean i don’t know alll those fellas seem to think it needs to be reiterated^",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397935",
"author": "Tom",
"timestamp": "2011-05-25T19:37:45",
"content": "So who reads the comments before blindly posting?(not many people…)That’s some damn impressive performance there, not bad for a £6 processor…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397938",
"author": "someone",
"timestamp": "2011-05-25T19:45:01",
"content": "Yo, I heard the C8051F360 is not an ARM, but in-fact an 8051 derivative.What’s with the wood-paneling theme on Hackaday, or is that just me?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397939",
"author": "astro73",
"timestamp": "2011-05-25T19:46:56",
"content": "So he built a CMUcam? While cool, color tracking alone has some very serious limitations and doesn’t necessarily work well in the real world in my experience.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397944",
"author": "NsN",
"timestamp": "2011-05-25T19:55:09",
"content": "Apparently someone is trying out different templates for the site, i saw one other template before it changed back to normal",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "397946",
"author": "Caleb Kraft",
"timestamp": "2011-05-25T19:58:02",
"content": "RE: template.Yup, accidentally clicked on a goofy one, then switched to a boring one while we pulled a backup. Sorry folks.",
"parent_id": "397944",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "397947",
"author": "Colecoman1982",
"timestamp": "2011-05-25T19:58:57",
"content": "Hey, I can’t remember where I saw it, but I’m pretty sure the 8051 isn’t an ARM processor.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397957",
"author": "Nathan Lively",
"timestamp": "2011-05-25T20:30:19",
"content": "Looks like Mike Szczys got some of the facts wrong. Here’s the original post that this article is taken from:http://chipsight.com/easy-eye-silabs-camera/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397963",
"author": "Craig Sullender",
"timestamp": "2011-05-25T20:36:44",
"content": "Hey thanks for all the comments on my project!I am designing for a $2 (BOM) vision system including processor. Some of the methods I use on other projects include no frame buffers and no random-order memory accesses, so no DMA needed. Check out the ChipSight slides:http://ChipSight.com/chipsight-slides/If a microcontroller like the F360 (or Stellaris or MSP430) had a pixel-processing peripheral, you would get the best of both worlds – easy, low-cost, low-power vision with high resolution, high frame rate, multiple object targeting.Here is a short tutorial on consumer vision:http://chipsight.com/computer-vision-for-everyone/Right not I am building a camera module (4Cam) with a $10 BOM, includes camera and pixel processing. Connect it to your microcontroller via I2C. The main idea being that for vision functions you want object information from the image, not pixels.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398014",
"author": "Ray Moore",
"timestamp": "2011-05-25T22:33:35",
"content": "Might have to see if I can hack his code up to run on an AVR I might I might. No way I could do 60fps but I bet I could do 2 to 5 fps on a 20MHz AVR without too much trouble. Time to start HACKING!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398053",
"author": "o",
"timestamp": "2011-05-26T00:17:13",
"content": ">gotchaseGoat cheese?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398065",
"author": "Hitek146",
"timestamp": "2011-05-26T01:25:46",
"content": "“>gotchaseGoat cheese?”LOL..Should be “gotya’s” or “gotcha’s”.Short slang for “Got you at a disadvantage”…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398066",
"author": "Hitek146",
"timestamp": "2011-05-26T01:28:30",
"content": "^And, yes, the apostrophes are inappropriate, but I wanted to isolate the root word… :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398098",
"author": "ewertz",
"timestamp": "2011-05-26T04:15:55",
"content": "@Ray MoorePretty much done years ago.http://www.jrobot.net/Projects/AVRcam.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398108",
"author": "pRoFlT",
"timestamp": "2011-05-26T05:24:53",
"content": "i love how people are pointing out the avr 8051 thing. the first couple posts all happened at the same time. dont you read posts first!Anyways cool project. i have the f320 model of that chip. maybe i can get the code working on it..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "457635",
"author": "m7ammad7assan",
"timestamp": "2011-09-17T15:15:34",
"content": "My graduation project should have the same Idea",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,182.605171
|
||
https://hackaday.com/2011/05/25/the-ins-and-outs-of-lithium-based-battery-packs/
|
The Ins And Outs Of Lithium-based Battery Packs
|
Mike Nathan
|
[
"how-to"
] |
[
"battery packs",
"liion",
"lithium ion",
"rechargeable batteries"
] |
So, you’ve got your awesome project built and are ready to take it on the go, but how are you going to power it? You could use a couple alkaline cells or perhaps swipe a Litihium battery pack from some infrequently used portable device – however before you do that, why not
check out what [Lady Ada] has to say on the subject
?
The detailed tutorial on her site discusses the different types of Lithium-based batteries and their form factors, as well as the strengths and weaknesses of each type. Voltage ratings are covered, as well as why it is important to choose a Lithium battery pack that fits the task at hand. The dangers of improperly handling batteries are clearly noted, highlighting the importance of selecting a proper charger and resisting the urge to ever wire Lithium batteries together to increase capacity.
While the bulk of the information presented is nothing new to most of our readers, it’s definitely a worthwhile read for those just starting to use Lithium battery technology in their projects.
| 10
| 10
|
[
{
"comment_id": "397902",
"author": "Necromant",
"timestamp": "2011-05-25T18:00:49",
"content": "Hmm… Strange. They tell not to connect the LiIons in parallel… Well, that’s pretty fine if you charge each one separately beforehand… And if these are all the same exact battery. At least that worked for me with no explosions.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397903",
"author": "Hackplifier",
"timestamp": "2011-05-25T18:04:01",
"content": "Good stuff, it’s very detailed.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397909",
"author": "fartface",
"timestamp": "2011-05-25T18:24:42",
"content": "“The answer is that these batteries are assembled by a company that is experienced and certified to test and assemble battery packs. The individual batteries are tested and sorted by machine so that each pack has matching batteries with the same capacity and internal resistance. Individuals do not have this equipment, which is why you should not try to make your own packs. ”Oh good god. If you want to be a fraidy cat, feel free to follow their advice. Myself on the other hand have rebuilt several hundred battery packs and di exactly this without a problem. they do NOT specially test each battery to make sure they are balanced… they mass assemble by randomly picking cells to make the battery.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397919",
"author": "Emeryth",
"timestamp": "2011-05-25T18:59:27",
"content": "I think they decided to scare the newbies a bit so they don’t get careless with lithium cells.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397925",
"author": "Bill",
"timestamp": "2011-05-25T19:17:41",
"content": "Li cells in parallel inherently self balance.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397950",
"author": "jerm1386",
"timestamp": "2011-05-25T20:13:01",
"content": "fartface has it right. they do not specifically test and sort cells since new cells right from the manufacturer all have pretty much the same specs and charge levels. making packs out of new cells from a single batch from one manufacturer is standard and just about as safe as any battery pack.mixing different capacities/chemistries/ages of cells in parallel is slightly risky since one may reach the end of its life sooner and start self-discharging the cells in parallel with it.Butnever EVER put different capacities/chemistries/ages/manufacturers of cells in series. that’s just a recipe for trouble",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398012",
"author": "hpux735",
"timestamp": "2011-05-25T22:27:45",
"content": "Agree with fartface and jerm1386… You do need to be cautious with Li batteries, but come on. If people are to be designing their own electronics they should at least be comfortable working with batteries. You can absolutely parallelize Li-pos. Also, you can serialize them as long as they’re exactly the same cell type (i.e. make and model) and capacity. Just balance them. Cell balancers are not expensive or complicated.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398089",
"author": "Stevie",
"timestamp": "2011-05-26T03:26:01",
"content": "They sell knock-off nokia batteries here in CDRKING for about $2. Anyone know of a good way to connect to these batts? Is the only way to solder wires into the slots?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398392",
"author": "Spork",
"timestamp": "2011-05-27T01:05:53",
"content": "For future put the youtube video first and a warning “If you are not careful, this will happen. We assume no liability.” — Then get to the information. The incessant warnings were distracting to say the least.Besides being beaten over the head with “DO NOT DO THIS YOU WILL EXPLODE”, the information was pretty good. I would have enjoyed more in-depth information, but I guess it’s beyond the scope of the writeup.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399852",
"author": "Th3_uN1Qu3",
"timestamp": "2011-05-30T18:10:23",
"content": "@ Stevie: You can pry off the top plastic tab and have direct access to the protection circuit PCB, that way you can achieve much sturdier soldering than simply soldering wires to the slots.The disclaimers were pretty hilarious i think. Don’t put batteries in parallel… BS. Don’t charge batteries in series… That one is actually a valid warning, because the battery that is slightly weaker will start deteriorating fast, and it’ll drastically reduce the capacity of the entire pack after just a hundred cycles or so. But there’s nothing inherently unsafe in it when each battery has its own monitoring and protection circuit.Both “rules” are violated in every laptop battery pack. They always consist of multiple cells in parallel then series to achieve the required voltage and watt/hour rating. They are monitored individually so if one cell goes weak the whole pack gets shut down, but they are always charged in series with no balancing method employed. That’s why they age so quickly – planned obsolescence.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,182.748324
|
||
https://hackaday.com/2011/05/27/adding-persistent-memory-and-ethernet-to-vintage-arcade-machines/
|
Adding Persistent Memory And Ethernet To Vintage Arcade Machines
|
Mike Nathan
|
[
"classic hacks",
"News"
] |
[
"arcade",
"AVR",
"bus",
"ethernet",
"tcpip",
"video games",
"z80"
] |
If you are a frequent reader, you are undoubtedly familiar with hacker [Sprite_tm]. He has been working with fellow members of the TkkrLab hackerspace to get things ready for their official grand opening on May 28th, and wrote in to share
a project he recently completed to kick things off
.
As part of their preparations, they have been stocking the joint with all sorts of hacker-friendly goodies including plenty of tools and Club Mate, as well as a vintage ‘1943’ arcade cabinet. The game is a group favorite, though every time the power is turned off, it loses all of the hard-earned high scores. [Sprite_tm] knew he could improve on the current paper-based score register, so he pulled the machine open to see what could be done.
He used an AVR to tap into the machine’s Z80 logic board, allowing him to read and write to the entirety of the game’s RAM whenever he pleased. This enabled him to keep tabs on the high scores, restoring them to memory whenever the machine is powered back on. The addition of the AVR also allowed him to add a TCP/IP interface, which is used to send high scores to Twitter whenever someone beats the previous record.
His modular bus tap can be used in all sorts of Z80-based hardware, so if you have some vintage equipment laying around, be sure to swing by his site for a more detailed look at the build process.
| 13
| 12
|
[
{
"comment_id": "398532",
"author": "Grovenstien",
"timestamp": "2011-05-27T13:26:16",
"content": "For a minute then I read that as ‘a vintage arcade machine from 1943’!!! Duhhh!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "436158",
"author": "Conner",
"timestamp": "2011-08-16T20:00:22",
"content": "same here! brain fart!",
"parent_id": "398532",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "398541",
"author": "dext3r",
"timestamp": "2011-05-27T14:02:56",
"content": "I love video game hacks – this rules. And tweeting high scores is actually really cool. Great jorb!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398544",
"author": "Whatever",
"timestamp": "2011-05-27T14:31:40",
"content": "This rocks! Well done!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398550",
"author": "Ray",
"timestamp": "2011-05-27T14:59:40",
"content": "<3 1943Great hack!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398568",
"author": "ChalkBored",
"timestamp": "2011-05-27T16:00:47",
"content": "I like that you can send messages to the machine that are displayed in the game. Much better than just sending scores to twitter, which makes sense, but seems like an underutilisation of the hardware.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398605",
"author": "Daniel Mackey",
"timestamp": "2011-05-27T18:19:41",
"content": "Sounds like something to play with BUT it’s above my skill level. I have a RASTAN and P.O.W Jamma boards that have Z80’s on them.Excellent job.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398734",
"author": "Bakamoichigei",
"timestamp": "2011-05-27T22:18:57",
"content": "Oh wow, this is something I wanted to look into for NEO-GEO arcade hardware. I’ll definitely have to check this out!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398835",
"author": "The Best Electronic Stock",
"timestamp": "2011-05-28T01:39:36",
"content": "just sending scores to twitter, which makes sense, but seems like an underutilisation of the hardware.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398999",
"author": "Jonathan Wilson",
"timestamp": "2011-05-28T07:22:40",
"content": "For Neo-Geo you would need a different version of the hardware that was compatible with the 68000 used on the Neo-Geo board.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399071",
"author": "cantido",
"timestamp": "2011-05-28T10:39:54",
"content": ">BakamoichigeiTaking over the memory buses should be pretty easy I think.. but the Z80 and 68k have their own buses from what I remember, so if you want to mess with both you would need a fair bit of hardware. The Z80s databus is only used for audio data IIRC.. so you can probably ignore it.Taking over the 68k memory bus should be fairly easy. If you can take over control of DTACK the bus is basically yours. You just have to make sure you don’t break some other timing that other parts of the system rely on.The 68k’s I’m building a machine with at the moment are fully static, so I can stop the clock and restart it. I’m not sure if that is the case with the original 68000 used in the NeoGeo.@allThe Ethersex thing he is using looks interesting but all the docs are in German from what I can tell. Is there anything in English?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399073",
"author": "cantido",
"timestamp": "2011-05-28T10:43:45",
"content": "@BakamoichigeiAlso.. there is no reason why you can’t load your own code onto the 68k to play with the Neo’s NVRAM where it keeps the bookkeeping stuff (on the MVS at least). IIRC the unibios has a hack that does this and communicates over the 2up controls/second pad connector.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399166",
"author": "ehrichweiss",
"timestamp": "2011-05-28T14:40:24",
"content": "Wait!?!? A 1943 arcade cabinet?!?! I JUST saw one of those here in my town. Makes me wonder if they were just down the street from my house(literally, less than a block is a guy who has a ton of near-mint game machines).",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,182.801062
|
||
https://hackaday.com/2011/05/27/low-cost-low-bandwidth-wireless-arduino-to-android-communications/
|
Low-cost, Low-bandwidth Wireless Arduino To Android Communications
|
Mike Nathan
|
[
"Android Hacks",
"Arduino Hacks"
] |
[
"android",
"arduino",
"bit bang",
"NFC",
"wireless communications"
] |
[Joe] was experimenting with his Arduino when he started thinking about how he could get it to communicate wirelessly with his Android phone. Bluetooth is an option, but it requires some extra components, and Google’s ADK works as well – just not wirelessly.
Instead, he thought it would be neat to see if he could
get the two devices to communicate with a simple magnetic coil
. He constructed a small 1cm diameter coil, connecting it to the Arduino via a resistor and diode. Using the Android Tricorder app, he was able to locate his phone’s magnetometer, after which he ran some tests to narrow down the best sample rate and frequency range for communications.
To transfer data between the two devices, he had to bit bang the signal in software, since the Arduino’s UART has a lower limit far faster than the 7 bps data rate he was able to achieve with the magnetometer.
While his wireless Arduino to Android bridge isn’t likely to win any awards for throughput, it is a great proof of concept project. Be sure to check out the video below to see his “poor man’s NFC” in action.
[youtube=http://www.youtube.com/watch?v=FBT4h7RW0wA&w=470]
| 22
| 22
|
[
{
"comment_id": "398512",
"author": "Muzza",
"timestamp": "2011-05-27T11:17:44",
"content": "wow very cool…. not particularly useful but cool none the less! I would never have thought to use the magnetometer as a data interface!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398516",
"author": "Panikos",
"timestamp": "2011-05-27T11:41:35",
"content": "so out of the box. i like it. it must have been a fun few hours getting that done!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398518",
"author": "Zee",
"timestamp": "2011-05-27T11:49:04",
"content": "Now that is some impressive hacking",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398519",
"author": "GTMoogle",
"timestamp": "2011-05-27T11:56:57",
"content": "Well, it is a 3 axis magnetometer, he might be able to up the data rate by encoding more data in the direction of the magnetic field.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398522",
"author": "steaky",
"timestamp": "2011-05-27T12:21:20",
"content": "@GTMoogleHe states in the article about the 3-axis stuff.Not very useful, but very impressive",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398523",
"author": "Muzza",
"timestamp": "2011-05-27T12:24:08",
"content": "@GTMoogle3 axis would be the accelerometer, I think he has interfaced with the digital compass… would be a bit difficult to generate a 3 axis artificial gravity interface! who’s up to the challenge??",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398524",
"author": "Aakash",
"timestamp": "2011-05-27T12:35:05",
"content": "Whoa! A new (useless) idea – a shaking platform which transfers data wirelessly to the phone, using the phone’s accelerometer :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398525",
"author": "marclurr",
"timestamp": "2011-05-27T12:37:04",
"content": "Sounds excellent but that video doesn’t really demonstrate it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398527",
"author": "The Doctor",
"timestamp": "2011-05-27T12:56:27",
"content": "Most impressive.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398535",
"author": "elektrophreak",
"timestamp": "2011-05-27T13:35:18",
"content": "wow man, this is GREAT!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398536",
"author": "John",
"timestamp": "2011-05-27T13:40:42",
"content": "Great use of the tricorder app!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398539",
"author": "Anonymous",
"timestamp": "2011-05-27T13:48:16",
"content": "might there be a way to inject data to an application utilising the sensor?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398556",
"author": "yetihehe",
"timestamp": "2011-05-27T15:17:39",
"content": "I think acoustic coupling would be faster.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398587",
"author": "spiritplumber",
"timestamp": "2011-05-27T17:08:56",
"content": "Beautiful! I’ve been doing acoustic coupling for a while now and wouldn’t like this method because it effectively disables your compass, but this is how it’s done — simple and clever",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398614",
"author": "Tobie Nortje",
"timestamp": "2011-05-27T18:36:49",
"content": "I mean, this is what hacking is all about!It does not have to be super useful, but thats what we do!This might just trigger the cellphone people to install a simple radio system in their phones to make things even simpler!i thought this was super cool!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398675",
"author": "Harvie.CZ",
"timestamp": "2011-05-27T20:22:41",
"content": "Can attach the coil to audio output of another android device?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398712",
"author": "symndz",
"timestamp": "2011-05-27T21:31:34",
"content": "what about multibit encoding, since this isn’t digital interface? think about that :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398765",
"author": "Mike",
"timestamp": "2011-05-27T23:07:51",
"content": "You could use the 6 DOF sensors by making a rig that moves and rotates the phone in x,y,z, like a shaker rig modem.But that’s just crazy…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398836",
"author": "The Best Electronic Stock",
"timestamp": "2011-05-28T01:40:02",
"content": "he might be able to up the data rate by encoding more data in the direction of the magnetic field.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399088",
"author": "Max",
"timestamp": "2011-05-28T11:18:46",
"content": "Ok, what’s next? Having an LED dot matrix block display QR codes and have the phone decode them using it’s camera? It might actually be faster… :P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "405449",
"author": "auxiliary-character",
"timestamp": "2011-06-13T23:19:02",
"content": "Wouldn’t the coil in the microphone be faster? Neat hack, though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "491566",
"author": "arno",
"timestamp": "2011-10-26T18:57:09",
"content": "does the phone talk back?",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,182.860659
|
||
https://hackaday.com/2011/05/26/my-desk-is-my-computer-case/
|
My Desk IS My Computer Case
|
Mike Nathan
|
[
"computer hacks",
"home hacks"
] |
[
"computer",
"desk",
"pc",
"water cooling"
] |
If you think that your water cooled rig is pretty sweet, check out
this creation by Dutch PC enthusiast [Peter Brands]
(
Google Translation
).
With his computer tweaked as far as he could imagine, he decided to spruce up his office a bit. In the process, he ended up tweaking his computer just a little bit more. After seeing a build put together by another computer enthusiast, he set off to construct a desk in which he could show off his computer. He spent some time drawing up plans with Google Sketchup and with the help of a friendly neighbor, started construction of his desk/PC case.
The desk is constructed from 3mm thick aluminum, and houses most of his computer’s components under a thick piece of glass. The only portion of the computer that is not enclosed in the desk is the 9-fan radiator he used for his water cooling setup. That part resides in his crawl space, which he connects to his PC via a pair of large water hoses he punched through his tile floor. If you are interested, you can see
all 800+ pictures of the build here
.
Simply awesome!
[Thanks duchie]
| 39
| 37
|
[
{
"comment_id": "398288",
"author": "Pete S",
"timestamp": "2011-05-26T19:51:15",
"content": "Awesome work! A bit deep for my ergonomic taste but a great idea. I’m a sucker for triple monitor setups as well. Ain’t no going back to a dual screen setup after that…He did another write up in english here:http://www.xtremesystems.org/forums/showthread.php?t=256952",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398289",
"author": "Doc",
"timestamp": "2011-05-26T19:52:06",
"content": "Whoa…. fap fap fap.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "2207419",
"author": "Fungipro",
"timestamp": "2014-12-03T22:34:37",
"content": "k.",
"parent_id": "398289",
"depth": 2,
"replies": []
},
{
"comment_id": "2207427",
"author": "Dung beetle",
"timestamp": "2014-12-03T22:36:34",
"content": "Love it.",
"parent_id": "398289",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "398290",
"author": "BlackCow",
"timestamp": "2011-05-26T19:55:31",
"content": "Have fun dragging that thing to a LAN party 0_0I totally need to get two more monitors lol.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398309",
"author": "McSquid",
"timestamp": "2011-05-26T20:02:55",
"content": "I have my own version of the desk computer. They are nearly impossible to move (or at least mine is). I had a LAN party at my house and I couldn’t participate because I couldn’t even get it into the living room.http://www.facebook.com/media/set/?set=a.509652570993.2011291.99200509&l=7d9cfca79d",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398311",
"author": "Lion XL",
"timestamp": "2011-05-26T20:07:15",
"content": "uhhh…its a desk, isn’t meant for moving. I had this idea just couldn’t get around to actually doing it. Probably wouldn’t have come out as sweet as this one looks, I don’t have quite the necessary builders skills.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398314",
"author": "Bob",
"timestamp": "2011-05-26T20:24:35",
"content": "I wouldnt drink what he is having :-/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398315",
"author": "Bob",
"timestamp": "2011-05-26T20:28:29",
"content": "This has been around for awhile, but still a cool build :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398319",
"author": "Wizzard",
"timestamp": "2011-05-26T20:30:26",
"content": "Easy to do- The real champ would make it as thick as a normal desk, something around 1U would be reasonable. Watercool the whole thing, of course- This is just a flat box and some PCIe extenders.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398320",
"author": "Colecago",
"timestamp": "2011-05-26T20:32:58",
"content": "@McSquidCouldn’t you bring the LAN part of it to you via a helpful network cable or wireless card?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398352",
"author": "Sodor",
"timestamp": "2011-05-26T21:41:07",
"content": "Nice!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398359",
"author": "L3p / Peter Brands",
"timestamp": "2011-05-26T22:04:16",
"content": "Hi there !Thanks for posting it here :)This desk wasn’t created for lans, it’s for home use only.For lans i’ll take some other pc.I just wanted to create a very very silent but fast workstation, and most important, my wife had to like it too in the living room.If you want some more info about it, don’t hesitate to read some more here :http://www.l3p.nlorhttp://forums.bit-tech.net/showthread.php?t=197139Im also in the middle of a casemod contest.Feel free to vote :)http://casemod2011.coolermaster.com/profile.php?u=37&c=2",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398360",
"author": "strider_mt2k",
"timestamp": "2011-05-26T22:19:14",
"content": "Very nice looking setup.I remember Popular mechanics had an article on this a year or so ago.Not my cup of tea personally, but still extremely well executed.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398363",
"author": "JD",
"timestamp": "2011-05-26T22:30:33",
"content": "Awesome! Now get some of that Tint that can be enabled/disabled and place overtop for when the lights start to bother you.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398366",
"author": "Hirudinea",
"timestamp": "2011-05-26T22:42:45",
"content": "Sweet! Wonder what he’ll do with his laptop?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398367",
"author": "MrBishop",
"timestamp": "2011-05-26T22:44:59",
"content": "That is one amazing desk. I would love to one day have something like that. Although the water cooling system sounds massive. Could you just install a refrigerator unit and make it air tight to keep it cool? Or would that make it take more power then its worth? I am only a freshmen in CompEng so I am pretty green.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398368",
"author": "Standard Mischief",
"timestamp": "2011-05-26T22:46:52",
"content": "The glass of tonic water glowing there is a nice touch.However, isn’t this an unlicensed, unregulated, untaxed back-alley tanning salon?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398369",
"author": "Standard Mischief",
"timestamp": "2011-05-26T22:47:23",
"content": "The glass of tonic water glowing there is a nice touch. However, isn’t this an unlicensed, unregulated, untaxed back-alley tanning salon?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398373",
"author": "McSquid",
"timestamp": "2011-05-26T23:16:23",
"content": "@ColecagoI suppose I could have, but then I’d have to play in another room which kinda defeats the purpose of the LAN party. Might as well just play online at that point.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398376",
"author": "Dino",
"timestamp": "2011-05-26T23:24:18",
"content": "Now THAT is a damn cool hack! NICE!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398380",
"author": "BLuRry",
"timestamp": "2011-05-26T23:47:44",
"content": "I like it, except that he installed Windows on it. But for its hardware merits, it is teh bomb. :-D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398386",
"author": "Spork",
"timestamp": "2011-05-27T00:43:31",
"content": "@BobMy thoughts exactly!@HirudineaDesktop in a desk… It only makes sense that he’d integrate it into his legs.@BLuRyMaybe he’s triple booting Mac OS, Windows, and his favourite ‘NIX build.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398389",
"author": "quinho666",
"timestamp": "2011-05-27T00:53:31",
"content": "That is one of my projects for a future where time is some misunderstood concept… And the whole thing would fit in one drawer (as the drawer is the case)… Very nice build, tho!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398404",
"author": "BiOzZ",
"timestamp": "2011-05-27T02:18:05",
"content": "very good job … i would conceder it to if i did not have to pick up my full tower and take it to work once a month",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398407",
"author": "James",
"timestamp": "2011-05-27T02:39:43",
"content": "Not sure if Id be comfy with the (apparently) UV underlighting. eye safety-wise.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398421",
"author": "BiOzZ",
"timestamp": "2011-05-27T03:25:34",
"content": "@James i agreeid use UV protected plexy class … its fairly cheep and pluss UV makes my contacts glow and screws up my vision",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398448",
"author": "Stevie",
"timestamp": "2011-05-27T04:17:13",
"content": "Sounds like half the people commenting here have never heard of laptops.(Yes I know you get more bang for your buck when it comes to Desktops bla bla).Very nice build, I can’t imagine having the patience to build something to that level. Good job :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398468",
"author": "joedirt",
"timestamp": "2011-05-27T05:31:54",
"content": "Nice job BTW, but I wonder how the top is secured to the wall. With no legs, I’m wary of the entire works ripping off the wall with some misplaced asses.Not for everyone obviously. I like the convenience of being semi mobile with a traditional tower case.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398469",
"author": "andar_b",
"timestamp": "2011-05-27T05:48:23",
"content": "I don’t know about the innards of his walls, but if you look at the lower left of the image, that looks like one big ass bracket holding up the top, if it’s solid, I bet it would hold just about anyone’s ass. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398470",
"author": "andar_b",
"timestamp": "2011-05-27T05:49:01",
"content": "Come to think of it…even if it’s square tubing of a reasonable thickness.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398529",
"author": "uzerzero",
"timestamp": "2011-05-27T13:16:02",
"content": "This is definitely awesome. Now if they only had these desks as standard furniture in the labs when I was studying electrical engineering…This makes me think of finding a cheap desk at a garage sale or the dump, removing the top, dumping some components in, and replacing the top with a sheet of plexiglass. Sounds like it would be a fun weekend project.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398530",
"author": "silvesterstillalone",
"timestamp": "2011-05-27T13:16:45",
"content": "@andar_b It isn’t the bracket that is the problem. Even if the bolting hardware was to go through the full width of a 2×4 stud it could still readily tear out with all that tasty leverage the table gives. Wooden studs just aren’t nearly as strong across the grain as they appear to be. Luckily it appears that the table is supported on the far side against the second wall, which should be sufficient.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398542",
"author": "Mike",
"timestamp": "2011-05-27T14:15:15",
"content": "And what if you want to move your computer, say to a lan party for example?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398552",
"author": "raged",
"timestamp": "2011-05-27T15:04:17",
"content": "if you were going to a lan party, maybe you have 2 computers?BTW awesome desk, i watched the build on HardOcp",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398584",
"author": "L3p / Peter Brands",
"timestamp": "2011-05-27T16:54:11",
"content": "The desk holder is square aluminum 40x40x4mm mounted with 10 x M8x100 in a concrete wall.Guess it can hold up to 500 Kg while the desk is around 50Kg :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398701",
"author": "Merlin051",
"timestamp": "2011-05-27T21:07:26",
"content": "@l3pYour just missing the perfect keyboard addition for this…The Razer Marauder StarCraft II Keyboard.[imghttp://strangera.files.wordpress.com/2011/01/razer-starcraft-ii-gear-green.jpg[/img]",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398837",
"author": "The Best Electronic Stock",
"timestamp": "2011-05-28T01:40:32",
"content": "where time is some misunderstood concept… And the whole thing would fit in one drawer (as the drawer is the case)… Very nice build, tho!Wooden studs just aren’t nearly as strong across the grain as they appear to be. Luckily it appears that the table is supported on the far side against the second wall, which should be sufficient.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "599266",
"author": "The Digi Wolf",
"timestamp": "2012-03-10T02:32:33",
"content": "This looks like an awesome way to save money on a computer case even haha! you’ll end up spending about the same price for a decent gaming case ($300+) any way, so why not a desk instead. I don’t get why you cant have the water cooling in the desk as well and have to run it to another room, instead of using a good Cooler Master H60 or something?",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,182.948668
|
||
https://hackaday.com/2011/05/26/tracking-eye-movement-by-measuring-electrons-in-the-eye/
|
Tracking Eye Movement By Measuring Electrons In The Eye
|
Brian Benchoff
|
[
"News"
] |
[
"eye tracking",
"hci",
"interface"
] |
[Luis Cruz] is a Honduran High School student, and he built an amazing
electrooculography system
, and the
writeup
(PDF warning) of the project is one of the best we’ve seen.
[Luis] goes through the theory of the electrooculogram – the human eye is polarized from front to back because of a negative charge in the nerve endings in the retina. Because of this minute difference in charge, a user’s gaze can be tracked by electrodes attached to the skin around the eye. After connecting eye electrodes to opamps and a microcontroller, [Luis] imported the data with a Python script and wrote an “eyeboard” application to enable text input using only eye movement. The original goal of the project was to build an interface for severely disabled people, but [Luis] sees applications for sleep research and gathering marketing data.
We covered [Luis]’
homebrew 8-bit console
last year, and he’s now controlling his Pong clone with his eye-tracking device. We’re reminded of a
similar system
developed by Atari, but [Luis]’ system uses a method that won’t give the user a headache after 15 minutes.
Check out [Luis] going through the capabilities of his interface after the break.
[youtube=http://www.youtube.com/watch?v=JlgKOV_mn18&w=470]
| 14
| 14
|
[
{
"comment_id": "398280",
"author": "anonymitee",
"timestamp": "2011-05-26T18:56:18",
"content": "Brilliant! This seems like a perfect solution for eye-tracking in a head-mounted unit (where a camera seems too in-the-way).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398281",
"author": "hpux735",
"timestamp": "2011-05-26T19:00:13",
"content": "Wow, this kid will set the world on fire. Nice work.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398284",
"author": "syale",
"timestamp": "2011-05-26T19:23:25",
"content": "Pretty bloody clever.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398285",
"author": "tibal",
"timestamp": "2011-05-26T19:30:03",
"content": "Excellent idea, but the python code makes me cry so much",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398351",
"author": "Doktor Jeep",
"timestamp": "2011-05-26T21:37:19",
"content": "Out-facking-standing.See what happens when kids are sent to REAL schools where they actually teach stuff?The best you can expect from an American HS student is a complete sentence or two about how sensitive they are to social issues.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398702",
"author": "Greg Zobel",
"timestamp": "2011-05-27T21:08:21",
"content": "It’s always great to see new tech innovations come out–especially from young folks. Does Luis intend to take this open source, commercialize it, or…?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398720",
"author": "error404",
"timestamp": "2011-05-27T21:40:13",
"content": "He should hook it up to Dasher:http://www.inference.phy.cam.ac.uk/dasher/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398780",
"author": "D_",
"timestamp": "2011-05-27T23:42:39",
"content": "Nothing less than extraordinary. Not to take anything from Luis, that’s why to comparison to American HS students could be seen coming from 10 miles away. I could rattle on about that. I’ll simply caution about using about using to broad a brush, and suggest anyone who never sees excellence in American HS students, just may be due to that birds of a feather flock together?? There; I gave an example of a broad brush. ;) Hopefully those who can afford to do so, will go to Luis’s page and use the donate feature.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399696",
"author": "pRoFlT",
"timestamp": "2011-05-30T03:16:58",
"content": "He should of done the eye mario like waterloo labs did with LabView.http://www.youtube.com/watch?v=4j2kw5MJK24",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400375",
"author": "Gigel Purcel",
"timestamp": "2011-06-01T04:43:47",
"content": "Not quit new idea, but good job to Luis.The idea if implemented in a pair of eyeglasses wireless (bluetooth) hooked up to a PC+Display could help severely disabled people.The eyeglasses’ frame should incorporate the electrods and data acquisition circuitry for a compact and portable design.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400655",
"author": "Gavin",
"timestamp": "2011-06-01T21:47:16",
"content": "That’s fantastic work, especially considering his age!Just to dump more related info:James Gips of Boston College developed an EOG system called Eagle Eyes, which is actually distributed (usually free of charge I believe) to people who need it. (http://www.eagleeyes.org/)I built an EOG controlled wheelchair over the course of my senior design and master’s thesis projects. (http://www.gavinphilips.com/projects/eyecontrolledwheelchair)As I mentioned on my website, VOG (videooculogram) systems have made more progress, including the communication devices from Tobii, Dynavox, etc.Finally, Jason Babcock built an IR VOG system into a pair of glasses fairly cheaply, and he’s the open source type. (http://www.jasonbabcock.com/eyetracking.html)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "431389",
"author": "David Cuesta",
"timestamp": "2011-08-09T19:46:17",
"content": "Can anyone tell me the difference between eagle eyes and Luis’s system? Also trying to get some kind of system setup for GBS patient in intensive care unit. What system is better electrode eye tracking or infrared eye tracker?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "431655",
"author": "Gavin",
"timestamp": "2011-08-10T04:12:05",
"content": "In a clinical setting, I have only seen infrared/camera based systems used. They are probably the most effective and reliable.Each AAC (augmentative alternative communication) company has one. Our speech therapists seem to prefer the Dynavox EyeMax and the Tobii systems.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "1002089",
"author": "geekmaster",
"timestamp": "2013-05-07T19:10:53",
"content": "Updated link for the PDF file:http://www.trycz.com/wp-content/uploads/2012/08/eyeboard.pdf",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,183.006263
|
||
https://hackaday.com/2011/05/26/wall-climbing-robot-uses-supersonic-grippers/
|
Wall Climbing Robot Uses Supersonic Grippers
|
Mike Nathan
|
[
"Robots Hacks"
] |
[
"Bernoulli",
"gripper",
"robot",
"supersonic",
"wall climbing"
] |
Watch out Spidey,
there’s a new wall climber in town!
Researchers [Matthew Journee, XiaoQi Chen, James Robertson, Mark Jermy, and Mathieu Sellier] recently unveiled their wall climbing wonder bot at the 2011 IEEE International Conference on Robotics and Automation. Like most other wall climbing bots, theirs operates on the Bernoulli principle to keep it stuck to the surface, but that’s where the similarities end.
Unlike other Bernoulli-based climbers, this robot’s gripper never actually touches the surface it is climbing. The researchers were able to accomplish this feat by designing a specialized gripper which forces air through a 25 μm gap, creating a very powerful low pressure vortex. The gripper’s design compresses the air by shape alone, causing the air flow to reach speeds of Mach 3, without relying on powerful pumps or increased air volume.
The researchers state that their supersonic gripper can support about five times the weight of a conventional Bernoulli gripper, and as you can see in the video below it also has no problem climbing a wide variety of surfaces.
Window-washing Roomba, here we come!
[via
Make
]
[youtube=http://www.youtube.com/watch?v=eEcDS1Vhp3o&w=470]
| 10
| 10
|
[
{
"comment_id": "398233",
"author": "addidis",
"timestamp": "2011-05-26T15:36:54",
"content": "The gripper’s design compresses the air by shape alone, causing the air flow to reach speeds of Mach 3, without relying on powerful pumps or increased air volume.Does this imply that the hose could be replaced by a low power pump?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398236",
"author": "Hackerspacer",
"timestamp": "2011-05-26T15:48:44",
"content": "How many SCFM of air does this need to operate? It it needs a 10 hp pump to operate, then it isn’t really that practical for most applications.Also – if the air stops… gravity takes over.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398243",
"author": "golddigger50",
"timestamp": "2011-05-26T16:00:25",
"content": "these guys are going to make a fortune in the window cleaning business!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398252",
"author": "Slipster",
"timestamp": "2011-05-26T16:21:20",
"content": "So here’s our new wall climber. It’s only 2lbs. Amazing. it also comes with 58lb HVLP air compressor to make it work and is attached to it via a 4′ hose but ignore that fact.Still… nice achievement!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398254",
"author": "Jay",
"timestamp": "2011-05-26T16:32:35",
"content": "Crap, I was ignoring that fact… now I’m all disillusioned. :( Stupid reality!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398279",
"author": "G-reg",
"timestamp": "2011-05-26T18:54:29",
"content": "Shananigins! Awesom suction cup thing. FAIL on %90 of the device off of the main chassis.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398365",
"author": "Hirudinea",
"timestamp": "2011-05-26T22:36:40",
"content": "That sucks so good!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398398",
"author": "Joey.Duncan",
"timestamp": "2011-05-27T01:50:16",
"content": "Actually, it blows so good! … at the same time, I was a bit disillusioned by the description claiming “a very powerful low pressure vortex” in a system where vorticity is not necessary or relevant. This is a system where the energy due to motion has been converted to pressure, there are not appreciable viscous forces.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398415",
"author": "Stevie",
"timestamp": "2011-05-27T02:56:40",
"content": "It still has lots of practical applications. It seems capable of lifting a reasonable weight. So I assume that a bigger version with a fatter air pipe could lift even more?Great for running cables up the side of a building without having to go up a ladder. Especially if you modified it to shoot staples into the wall to secure the cable as it goes up.It’s really quite impressive.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398886",
"author": "hashish",
"timestamp": "2011-05-28T03:49:45",
"content": "Wow, maybe we could start traveling in tubes or tunnels with these things. An array of these devices on the top and the bottom pulling the vehicle up and down at the same time to make hover. Then a nominal orthogonal force could propel the vehicle. Maybe even achieved with a single propulsion device.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,183.148271
|
||
https://hackaday.com/2011/05/26/hey-oems-arduino-controlled-dishwasher-has-much-potential/
|
Hey OEMs, Arduino Controlled Dishwasher Has Much Potential
|
Jesse Congdon
|
[
"home hacks"
] |
[
"appliance",
"dishwasher",
"kitchen",
"repair"
] |
I think we can all agree that sometimes projects are a bit of a stretch. We rack our brains for something interesting and unique to bring to the table and end up stretching for that special strange twist trick or technique that will garner that special kind of admiration from our peers. In that sense it is easy to loose sight of some of the best projects, the simple ones that prove you can fix anything anytime anywhere and improve it while you are at it.
This is just such that kind of project, [UnaClocker] had a washer fall victim to its own condensation. Instead of shelling out a ton of money for the repair man he
took on the job himself
, fitting the washer with an Arduino, relays and a breadboard. A little reverse engineering revealed the (notably well labeled) control board, evidently the control signals involved are extremely easy to interpret. [UnaClocker] also found a temperature sensor to control dish sanitation. At this point he had FULL CONTROL over the dishwasher and was able to design the ideal prewash/wash cycle timings.
Now that a wash cycle is all set [UnaClocker] can now go ahead and embarrass the hell out of the OEM. He plans on adding a real time clock module to time washings and a clean dish indicator, after which we think he should get rolling on some wireless/tweet/ethernet/capacitive touch/voice communication. After that he is going to work on buttoning up the design and making it pretty.
Check out the setup in action after the jump!
[youtube=http://www.youtube.com/watch?v=up5q2SokrKA&w=470]
| 44
| 40
|
[
{
"comment_id": "398208",
"author": "Will",
"timestamp": "2011-05-26T14:24:40",
"content": "Nice! Awesome creativity to save some cash! Bring on the Arduino haters!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398210",
"author": "Monty Werthington",
"timestamp": "2011-05-26T14:36:36",
"content": "Now thats the sort of hack I want to see. Arduino or not thats a definite improvement to that appliance. Good show.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398212",
"author": "TheCapt",
"timestamp": "2011-05-26T14:48:16",
"content": "I assume the RTC is so he can program start time – good idea. Needs to maybe add the level of wash (light, med, heavy, OMG-burnt cheese). Then add the clean/dirty – my kids never check – and it is done. I like this idea quite a bit. Only other mods would be hardware on dishwasher itself as I’d like to vent my outside to keep the humidity down in the summer(can you vent to the drain stack maybe? hmm), but vent to inside in the winter.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398213",
"author": "TheBadFrog",
"timestamp": "2011-05-26T14:49:38",
"content": "There is some serious engineering going on here. I have the same dishwasher and likewise it had gone ape $#!+ on me. After gutting it I found a lot of water damage due to condensation on the ribbon cables. After an alcohol bath (for the cables, not for me) and a little drying time my dishwasher came back to life.Now I find out I could have just rebuilt the whole control system with an Arduino. Go figure.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398214",
"author": "JJ",
"timestamp": "2011-05-26T14:52:21",
"content": "LOL. Why is the Maytag man “Forever alone”?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398218",
"author": "johnmc",
"timestamp": "2011-05-26T15:01:56",
"content": "Shhh! This needs to be kept maintained in the underground hacker space economy. Little Maytag customizing shops all across the country. Dishwashers with 200 fine china settings. Washing machines that *finally* will get the wash clean just like the one a decade ago. All of them tweeting that the task is done.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398227",
"author": "fartface",
"timestamp": "2011-05-26T15:20:57",
"content": "Embarrass the $199 dishwasher? yes.he is lacking functions that a $2500 dishwasher has. His is primitive compared to the top of the line stuff",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398231",
"author": "tjb",
"timestamp": "2011-05-26T15:30:36",
"content": "@TheCapt: I would not put pressure on the pluming vent system. Too much potential for noxious gas to leak into the house. In stead I would look at some sort of heat exchanging vent system. A friend has a whole house unit that takes the vents from all of the bathrooms and the dryer and recovers heat or moisture as needed by the season.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398235",
"author": "Brennan",
"timestamp": "2011-05-26T15:44:29",
"content": "He’s not “embarrassing” anyone here. There is a reason cheap dishwaters don’t have superfluous ‘features’ – cost.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398237",
"author": "OiD",
"timestamp": "2011-05-26T15:53:08",
"content": "Very nice hack! Nothing like a simple, easy to hack interface.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398239",
"author": "John",
"timestamp": "2011-05-26T15:54:51",
"content": "This is an awesome project, well done.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398253",
"author": "Robbo",
"timestamp": "2011-05-26T16:23:49",
"content": "2 hours and 36 minutes to wash dishes? Do dishwashers take that long normally? If so, is it really worth it economically speaking?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "398483",
"author": "UnaClocker",
"timestamp": "2011-05-27T07:35:04",
"content": "The standard wash cycle was over 2 hours. It’d display 2H on the display until it got down to 99. It had a heavy duty pots and pans mode that took 3 hours.",
"parent_id": "398253",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "398259",
"author": "FredP",
"timestamp": "2011-05-26T17:03:54",
"content": "He might want to re-think putting the high voltage relays on the ground. If the already dodgy washer ever starts leaking water, gravity is going to guarantee it goes to the same place as the mostly exposed AC power. Get the relays into a place that isn’t going to get wet in case of problems.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398260",
"author": "brad",
"timestamp": "2011-05-26T17:13:16",
"content": "@robbono, that’s a reeeeally long cycle time.but his dishes are oh-so-clean!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398262",
"author": "James",
"timestamp": "2011-05-26T17:19:37",
"content": "It’s fairly standard cycle time with more low-energy washers these days. Ours is a brand spanking new one and it’s normal wash is 2:40, uses 1kWh and 9 litres of water. I believe older ones washed faster but used more water and power. Who cares anyway, it’s rare that you need dishes NOW lol.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398277",
"author": "Chris",
"timestamp": "2011-05-26T18:44:19",
"content": "My last dishwasher, a Frigidaire, failed after a couple of years due to a slipping coupling in the pump assembly. It’s a common failure, and appears designed to fail after a certain amount of time. This small plastic part is also the ONLY part in the pump assembly not sold separately; instead you have to buy another $150 assembly. Coincidence? I think not.Upon looking for a new dishwasher, I found that virtually all of them have recurring and expensive failures due to known defects. The Magtag control board issue is just one example. It could be fixed by the manufacturer, and should have been by now; but they have not done so.It appears manufacturers are no longer happy with selling an appliance, without also guaranteeing a continuing stream of income from avoidable repairs.So I bought a 20 year old used GE dishwasher instead. The pump assembly leaked, but was easily fixed because every part likely to fail in the assembly was available together in an inexpensive $15 rebuild kit. It will probably run another 20 years.Congrats to UnaClocker, and to everyone else who can find any way to avoid sending these unethical manufacturers any more money. The hackers are the only winners in today’s society!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398283",
"author": "grovenstien",
"timestamp": "2011-05-26T19:13:27",
"content": "just wait for it to catch on fire!!! Ive seen two dishwashers start to smoke in my life time! Dont trust the little B’s!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398287",
"author": "veneficus",
"timestamp": "2011-05-26T19:42:50",
"content": "I love this hack. Stick it to the man!Gotta applaud his wife’s patience and support.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398316",
"author": "John",
"timestamp": "2011-05-26T20:28:29",
"content": "This would be even cooler if the dishwasher would notify you via text message, email, or any other means.Very cool though!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398358",
"author": "aztraph",
"timestamp": "2011-05-26T22:00:26",
"content": "Grats on the great rebuild, as a former maytag repair man (no, I was NOT forever alone, rather the opposite) I have seen this problem many times, usually too far gone to do anything but replace the control. I would be concerned about how the arduino would handle the humidity.of course being a recovered maytag repair man means I now have a Bosch dishwasher.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398362",
"author": "Matt",
"timestamp": "2011-05-26T22:23:25",
"content": "Supposedly if you open the door right after everything is done, and let the steam out, your plastic items don’t get condensate on them, and your upturned cups don’t have water in the little lips. Perhaps you could automate this? :) well done on a good project btw.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398374",
"author": "xorpunk",
"timestamp": "2011-05-26T23:20:44",
"content": "Nice hack, I’m actually not bored by an arduino project..I guess the reason everyone is trolling is because this is something aimed towards poor people..I know..eww",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398377",
"author": "Keith",
"timestamp": "2011-05-26T23:24:56",
"content": "Nice hack! You must have a very understanding/supportive wife to be allowed this sort of privilege.Just a tip for the UI portion. I would not necessarily clear the display and keep it blank so long, especially if some of the same items reappear later in the next screen.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "398484",
"author": "UnaClocker",
"timestamp": "2011-05-27T07:41:38",
"content": "Yeah, the display clears due to a flyback issue from the relays. I clear the display and reinitialize it after turning off each relay. I need some optoisolators, or better yet, solid state relays.",
"parent_id": "398377",
"depth": 2,
"replies": [
{
"comment_id": "4275749",
"author": "Paul J.",
"timestamp": "2017-12-27T05:23:28",
"content": "Hi I love it. My Maytag input is down to its last cycle. I want to use an Arduino circuit to build my program. I already know the timings etc but would love a copy of the program to modify. If that is possible let me know. Thanks…..again this is about the 3rd device where the electronics fail in the kitchen cause they can’t take the environment and where the old mechanical timers survive.",
"parent_id": "398484",
"depth": 3,
"replies": []
}
]
}
]
},
{
"comment_id": "398425",
"author": "Micah",
"timestamp": "2011-05-27T03:30:04",
"content": "I’ve rigged up almost the exact same dishwasher due to dieing components. Its a lot more ghetto though, Its using a doorbell, a LED scavenged from who knows what and a bathroom stall door latch. Its ugly as heck and can only be used on heavy, but it works, and will probably keep working for all eternity :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398481",
"author": "berslan",
"timestamp": "2011-05-27T07:12:46",
"content": "Awesome!Now it is sooo easy to integrate it into a home automation system. I am not so sure what improvement this can can bring to life but just the cool factor of being able to schedule the dishwasher from your phone or pc is enough reason to do it. Next, the fridge.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398513",
"author": "pff",
"timestamp": "2011-05-27T11:36:13",
"content": "I wash my dishes in a sinkyou all make me sickTheCapt: explain why a dishwasher start timer is useful. does it load itself too?John: no why would it be cool to get a text your dishes are clean? so you could run home and empty them?veneficus: he isnt sticking it to anyone he paid for the original dishwasher. the only person getting it stuck to is a plumber. i dont know about you but around where i live plumbers are actuall going out of buisness due to the economyberslan: you sir are full retard. again, scheduling the diswasher is absurd and pointless unless it can load itself. scheduling the fridge however is even less necessary.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398520",
"author": "google",
"timestamp": "2011-05-27T12:07:08",
"content": "Hmm… interesting, nice to have some added features, and much better than throwing it out, but I think there’s probably a certain amount of care in the wash cycle design that the pros know and we don’t.For example, I know my dishwasher monitors how dirty the water is, and only dumps water when it’s a certain dirtyness, to save water and electricity heating fresh water. I think it also uses this to know when the plates are clean.I imagine there’s been a certain amount of research done by the manufacturer to find what temps, heating speeds, and times are safe for the dishwasher, your dishes and saucepan handles, and kill the nasties, while minimising water and energy consumption.Great hack, but our hacking community often overlooks the research effort that goes into real products to get these details right.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6300898",
"author": "bruce EDDINGS",
"timestamp": "2020-12-07T02:25:33",
"content": "When I researched my control boards in an attempt to discover those very items, including the original board schematic, you quickly realize how “secret” they attempt to keep that information. I’m sure factory techs have access, however the information for any specific machine is elusive at best. The turbidity sensor is the one that measures water clarity with light and if its a sensor connected to the main board it only takes a little time to suss out it’s function and accessibility. If a few people, qualified techs esp., were to do just a little research and chime in, I’m sure most certainly these questions and more could be answered.Your right, there’s a difference between getting it to work again and getting it to work as designed. Maybe even getting it to work a little better or taking control of your appliances, learning to code and putting in the time to research a better plan than just calling repair tech who may just say “your better off just buying a new one.”The last point for sure can be true at times but, in every line of work there is the engineering to build a better product and then the reality of planned obsolescence, for example, how my control board was never moisture sealed and the dampness from the venting port led to effluence and short circuiting after just 5 years of typical use. We should all be purchasing the best science and tech have to offer but alas Maytag and Whirlpool still need to make money by selling warranties, parts and complete replacements.",
"parent_id": "398520",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "398558",
"author": "UnaClocker",
"timestamp": "2011-05-27T15:24:21",
"content": "Yeah, I did do a fair amount of research on how dishwashers work before completing this project. Between doing some searches to find optimal water temperatures, and other information about how dishwashers normally work, as well as doing my own experiments with the unit to confirm what got the dishes clean, and what didn’t, along with what made the machine appear to take about the same amount of time as the previous controls did.I agree that some research went into these things, but nothing that isn’t published online. You have to remember, a generation earlier, these dishwashers were controlled by a glorified egg timer, it was just a dial that rotated around at a set speed and switched the modes as it went. (My controller could retrofit those older models as well) This isn’t rocket science that needs some kind of research department to run.@pff: Obvious troll is obvious.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398573",
"author": "Jeremy",
"timestamp": "2011-05-27T16:18:03",
"content": "@UnaClocker: Those Egg-Timer dishwashers are still made and yes it would be crazy easy to replace the mechanical timer of those with an electronic system as is what manufacturers do. Great Job on this. I never thought about replacing the control system on a dishwasher before.Some tips:I would suggest putting diodes on your relay coils to prevent the flyback issue.Do not refresh the entire screen except sparingly.I’d suggest using a graphic LCD because you can save space and put a ton more info and pictures on them than a standard 4×20 display (I use this one with the arduino:http://www.sparkfun.com/products/10168Piece of cake to integrate)You probably can’t do much to shorten your cycle time due to how fast your drain pump is and how efficient your calrod is but you could shorten how long your main pump is cycling the water through your washer.And Finally, did you open your dishwasher door up and get the service manual out of it? The service manual would have made your research simple because it tells you how long each cycle is, your needed temperatures, and has the wiring schematics.I would also suggest putting your relays in a water tight enclosure under the dishwasher just in case.Great Job though! It is nice to see such ingenuity here.@berslan: I wouldn’t want to mess with the refrigerator except to add to the current control system otherwise you would risk always throwing your compressor into overload mode which just decreases it’s effectiveness. I would however like to add features like integrating it into my home automation system to tell me that it is making ice, what the temps are, if the doors are open, and possibly be able to change the operating temps. All of this is possible by tapping into the individual manufacturers communication bus (GEA (GE), WIDE (Whirlpool/Maytag), etc).@pff: totally a troll.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398685",
"author": "Blue Footed Booby",
"timestamp": "2011-05-27T20:38:53",
"content": "A lot of vacuums these days have those prone-to-breakage plastic mechanical parts, too. I wonder how much it would cost to make a 3d printer that can make copies of these parts for me to sell on ebay…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398827",
"author": "Brian Neeley",
"timestamp": "2011-05-28T01:32:09",
"content": "@Blue Footed BoobyHow much is a 3d printer? Probably any 3d printer you could build or buy would be sufficent to make all the parts you could manage to sell. I happen to remember this article (http://hackaday.com/2010/08/05/using-makerbot-for-dishwasher-repair/), where someone actually made his own repair part. Making parts to sell online probably won’t pay for the printer, just because your margin would be too low.Check the article. If you were a repairman, and used it to make repair parts, you might pay for the printer, maybe.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398911",
"author": "D1g1talDragon",
"timestamp": "2011-05-28T04:27:46",
"content": "Nice build! When I get back to the states, I need to get back to some TRS meetings. Thee hacks are exactly what got me into this stuff when I was a kid.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399102",
"author": "K!P",
"timestamp": "2011-05-28T11:53:14",
"content": "@brrian neeley: we should croudsource a database with 3d files for smal/hard to find parts that tend to fail. You could just print it in a local hackerspace/ future eco repair shop or something. It’s the first step in replicator technology!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399111",
"author": "pff",
"timestamp": "2011-05-28T12:11:36",
"content": "not even trolling lolyou guys seriously need to chill you are so uptight that the second someone has a valid observation as to the limited usefulness of one of your builds you are all like omg a troll he troll us derpwell guess what sometimes its true",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399159",
"author": "lexi",
"timestamp": "2011-05-28T14:24:37",
"content": "Yeah, Embarrass the OEM. “Oh no, have we got egg on our face for making a metric shit ton of money by sticking with these cheap control systems!”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399397",
"author": "TheCapt",
"timestamp": "2011-05-29T01:48:41",
"content": "@pffThe timer set feature is so you can set it for say, after you go to bed (if you are lucky enough to get a discount on electricity at night). I actually use the delay on ours so that it doesn’t come on while we are watching a movie, but then also I don’t forget to start it either after the movie.@tjbI didn’t plan on sending pressure (not much at least) into the stack, but simply venting the steam and excess heat into the stack.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400342",
"author": "Quinn Dunki",
"timestamp": "2011-06-01T01:44:39",
"content": "Nice work!As someone who has built my share of ridiculous things, I can appreciate that the journey is often the point, rather than the destination. Just because there are other ways to solve a problem, doesn’t mean your way isn’t fun and educational.With your current setup, you could trivially add the features of the Dish-O-Tron 6000:http://quinndunki.com/blondihacks/BlondiHacks/Index/Pages/Dish-o-Tron_6000.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400453",
"author": "asd",
"timestamp": "2011-06-01T11:43:44",
"content": "“–except that it’s a $150 part.”Those boards cost ~$1/piece to mass produce in China.Mechanicaly these type of machines would be OK for indefinitely (bearings usualy have L10h rating of 600…3000h -> 4-8 years of 1h/day use), but parts that fail are these electronic boards which have been deliberately desingned to fail after certain number of washing cycles due to corrion/condension problems. No off-brand repair shop is ever going to get the needed documentation from manufacturer to do simple repairs and the one’s that offer those repairs also sell new machines with price tag of $’repair cost’+rand(40).Thing is, it would be economical suicide to make washing machines that lasted +20 years. Cost of shielding electronics from water (protip: DIY) is insignificant.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400520",
"author": "Quinn Dunki",
"timestamp": "2011-06-01T15:55:37",
"content": "@asd“Thing is, it would be economical suicide to make washing machines that lasted +20 years.”I think a case could be made that people don’t want that anyway. Most consumers’ primary concern (right or wrong) is probably price point. They aren’t likely thinking about whether the machine will last 5, 10, or 20 years.I wouldn’t frame it as any sort of “conspiracy to make things fail”, but rather, building things as cheaply as possible (which generally means cutting some corners) because that’s what has been successful in the marketplace.Arguably, there’s a certain elegant efficiency to how things are made these days. If people are going to replace the product in 5 years anyway (which, let’s face it, most probably do), building it to last 20 years is actually a waste of resources.I suspect most readers of this blog would like things to be built better than they are (myself included), but are we representative of the entire market for consumer appliances & electronics?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "400896",
"author": "attrezzop",
"timestamp": "2011-06-02T13:10:46",
"content": "This would be awesome in home automation. Lots of washers have timers but it’d be awesome to have them statically set to start at a time when you’re not home or won’t be annoyed by it.Like many families we usually wash dishes at night. Right now we live in a house where the dish washer is far away from the bedroom, but in the past our bedroom was right next to the kitchen.This gives you essentially two choices, either you can start the wash in the evening and have it running while you watch a movie etc and ruin that, or you set it to delay so it wakes you up a few times in the middle of the night.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,183.226894
|
||
https://hackaday.com/2011/05/26/hidden-messages-in-audio/
|
Hidden Messages In Audio
|
Kevin Dady
|
[
"digital audio hacks"
] |
[
"Hidden text"
] |
[Alex] tiped us off about the evil sounding noises coming from
http://www.thedarkknightrises.com/
. when you go there your pretty much greeted with a wav file and if you have a quick eye on the status bar its pretty easy to get the direct link to the file and download it. Thats all great, but why would you want to?
Well if you play back the file in a program that supports spectrograms (like audacity) you will find that there is a twitter hash hidden within the audio spectrum, that presents itself as plain text in a pretty well rendered font. Of course this leads you to another part of the site where yet another puzzle awaits you.
While this is all an interesting way to stir up buzz about the upcoming (Batman) movie, we found hiding plain text in an audio file pretty wild, though its been done before or better such as the post we had not too long ago about Ham’s
packing QR codes in a similar way
.
| 24
| 24
|
[
{
"comment_id": "398190",
"author": "neorazz",
"timestamp": "2011-05-26T13:22:47",
"content": "We were doing this years ago see unfiction.com you cann doctor any wav file with minimal interference (sounds like static on playback) by just editing the wav in raw/hex and just type in what you want",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398191",
"author": "klz",
"timestamp": "2011-05-26T13:28:57",
"content": "http://www.bastwood.com/?page_id=10",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398196",
"author": "MarcoS",
"timestamp": "2011-05-26T13:46:53",
"content": "not pr0n",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398199",
"author": "Paul",
"timestamp": "2011-05-26T13:56:48",
"content": "@neorazz The message #TheFireRises is in the magnitude plot of frequency domain data (FFT/DFT), not directly in the actual wav file data.I have never seen anyone hide information in the phase of the frequency domain. People only try and hide data in the magnitude.The first time I saw anyone hide data in the magnitude part of the frequency domain was in 1991, but I’m positive he wasn’t the first.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398200",
"author": "Ahmad",
"timestamp": "2011-05-26T14:01:52",
"content": "@neorazz, this isn’t what you’re describing – just putting characters into the wav wouldn’t make it show up on as rendered text on a spectrogram like that..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398203",
"author": "fartface",
"timestamp": "2011-05-26T14:12:27",
"content": "Old hat. Chemical brothers did this YEARS ago.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398204",
"author": "Ben Ryves",
"timestamp": "2011-05-26T14:14:19",
"content": "I reckon one of the best-known examples of this can be found in Aphex Twin’s “Windowlicker”:http://www.bastwood.com/?page_id=10",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398206",
"author": "fartface",
"timestamp": "2011-05-26T14:16:28",
"content": "My bad.. Aphex Twin….http://www.partyutah.com/edm/showthread.php?t=6794&page=1Same difference.. wild out there music. they were doing this in 2007….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398207",
"author": "anonymous",
"timestamp": "2011-05-26T14:19:12",
"content": "Richard D. James would like to have a word with you.http://www.youtube.com/watch?v=M9xMuPWAZW8&feature=player_detailpage#t=320s@5:28",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398209",
"author": "Andrew",
"timestamp": "2011-05-26T14:29:03",
"content": "There’s a free program called Coagula lite that does this kind of additive synthesis. You feed it an image and it produces a .wav file with the correct spectral content.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398211",
"author": "bearmos",
"timestamp": "2011-05-26T14:39:21",
"content": "Looking at a normal spectrum would produce a single line, or collection of dots, one dot representing the magnitude of a frequency.I’m assuming the above image is the result of a waterfall-like plot, overlaid on the same plot? So, essentially, what we’re looking at is a number of plots, aggregated?Is this the default behavior of audacity’s spectrum analyzer?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398225",
"author": "dude",
"timestamp": "2011-05-26T15:13:38",
"content": "Is this the default behavior of audacity’s spectrum analyzer?yep",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398228",
"author": "wa5znu",
"timestamp": "2011-05-26T15:23:32",
"content": "At the SF Bay Area Maker Faire last weekend we showed many examples of radio modulation, with big waterfall displays from SDR and digimode programs.fldigi includes a way to specify text that shows up in the waterfall, mostly for things like “CQ” which I showed in 2004 (http://wa5znu.org/log/2004/09/psk-visual-cq.html), and I got the idea from the Aphex Twin example and baudline. Now it’s pretty common in digimode programs.We also showed an analog slow-scan picture mode in MFSK, which sends small photos in a minute or two, in color or black and white.But my favorite thing we showed was Hellschreiber, which is really ancient (predates radio) way of sending text by having a fast and a slow scan and then turning the transmitter on for a dot and off for a space. Yes, it’s a font. The Germans used in in WW2, but it’s older than that, so it was done with electromechanical devices originally.Murry ZL1BPU has a great page about all the various “fuzzy” modes in use today:http://www.qsl.net/zl1bpu/HELL/Index.htm",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398245",
"author": "Digital",
"timestamp": "2011-05-26T16:02:15",
"content": "there’s got to be more to the puzzle than just the audio leading to a twitter leading to a picture. The picture is made of a mosaic of other twitter followers, but if you view the image you gethttp://c3315141.r41.cf0.rackcdn.com/forhashtagUnaltered9374.jpgThat has to be another clue!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398255",
"author": "Anonymous",
"timestamp": "2011-05-26T16:34:56",
"content": "hadVERTISING?Also, “your” vs “you’re”. If you’re going to advertise to me, at least try a bit harder.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398318",
"author": "drake",
"timestamp": "2011-05-26T20:29:50",
"content": "quick eye? what about viewing the source …",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398416",
"author": "t&p",
"timestamp": "2011-05-27T02:57:28",
"content": "source has“show_am_i_in_here_twitter”:”0″,”show_am_i_in_here_facebook”so there is a facebook profile as well",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398492",
"author": "lolowski",
"timestamp": "2011-05-27T08:16:19",
"content": "http://uvb-76.blogspot.com/2010/09/probably-first-ever-in-history-graffiti.html",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398508",
"author": "John",
"timestamp": "2011-05-27T10:11:45",
"content": "Has anyone thought about the fact that there could be information hidden in the rest of the audio signal? You know, the part below 3khz?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398510",
"author": "maomakmaa",
"timestamp": "2011-05-27T11:13:01",
"content": "[youtubehttp://www.youtube.com/watch?v=DagI_oevvPc&w=425&h=349%5D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398630",
"author": "MrX",
"timestamp": "2011-05-27T19:20:25",
"content": "@Ben Ryves @fartfaceDamn right. Aphex Twin – “Formula” is gold",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398689",
"author": "Anonymous",
"timestamp": "2011-05-27T20:43:19",
"content": "http://www.youtube.com/watch?v=S64FROErFYA",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399402",
"author": "jeicrash",
"timestamp": "2011-05-29T02:22:36",
"content": "hackthissite.org has a few labs with this. pretty neat.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "3200864",
"author": "Jaku",
"timestamp": "2016-09-15T23:55:00",
"content": "There is a way to embed subliminal messages into any song or video filehttp://www.subliminizer.comhas a free subliminal player",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,183.288391
|
||
https://hackaday.com/2011/05/25/extracting-secured-firmware-from-freescale-zigbee-radios/
|
Extracting Secured Firmware From Freescale Zigbee Radios
|
Mike Nathan
|
[
"Security Hacks",
"Wireless Hacks"
] |
[
"decapping",
"freescale",
"mc13224",
"zigbee"
] |
[Travis Goodspeed] recently tore down the Freescale MC13224 wireless radio chip in an effort
to demonstrate how the device’s firmware could be read
, even when locked down in “secure” mode. While you might not recognize the Freescale MC13224 radio by name alone, you are certainly familiar with some of its practical applications. Found in the QuahogCon and Ninja Party badges among other consumer goods, the popular Zigbee radio turned out to be a fairly easy conquest.
[Travis] first used acid to decap one of the microcontrollers to see what was going on under the plastic casing. Inside, he discovered a discrete flash memory chip, which he removed and repackaged using a wedge wire bonder. He was easily able to extract the firmware, however decapping and repackaging a flash chip isn’t necessarily the most user-friendly process.
After digging further, he discovered that holding one of the chip’s pins low during boot would allow him to run custom code that recovers the firmware image once the pin is pulled high once again. This far more practical means of firmware recovery can be easily facilitated via a circuit board revision, as [Travis] mentions in his blog.
| 17
| 17
|
[
{
"comment_id": "397871",
"author": "Gregg",
"timestamp": "2011-05-25T16:19:29",
"content": "That’s hardcore, one warranty definitely voided.It’s also awesome.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397874",
"author": "Zee",
"timestamp": "2011-05-25T16:27:24",
"content": "That is some industrial-espionage grade hacking right there.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397878",
"author": "uC",
"timestamp": "2011-05-25T16:41:50",
"content": ">The first method for recovery requires access to some rather–but not terribly–expensive equipment…>Then use a wedge wire-bonder to place the chip into a new package.I’ve looked into wedge/ball bonding before but have given up once searching for hardware. Anyone have any experience with any manufactures that have ‘easy’ to maintain equipment for similar experimentation?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397880",
"author": "Alex Parting",
"timestamp": "2011-05-25T16:49:39",
"content": "Travis, rawks, he is very neighborly :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397904",
"author": "Axel Roest",
"timestamp": "2011-05-25T18:05:25",
"content": "Funny how they write “He was easily able to extract the firmware”, under an image which doesn’t look easy at all!!Two Snake Dogs for Travis!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397921",
"author": "zapa47",
"timestamp": "2011-05-25T19:07:05",
"content": "That picture screams “easy”.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397924",
"author": "Cricri",
"timestamp": "2011-05-25T19:14:07",
"content": "Ok, so popping caps is dumb and can be done by a 3 years old kid with no skills whatsoever, but on the other hand, THAT is a hell of a hack. Well beyond my skills, but very well done.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397928",
"author": "Cricri",
"timestamp": "2011-05-25T19:20:55",
"content": "Sorry, I’m still p*ssed off at the fact that a Youtube video of a cretin popping caps (skills needed: ignore that red is +) made it on HAD not long ago, and more appalling, that many readers found it awesome. I started taking medications and booked a hypnotist for tomorrow, so hopefully I’ll get over it soon.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397929",
"author": "Saccrolux",
"timestamp": "2011-05-25T19:26:47",
"content": "Cricri,All work and no play makes Cricri a dull boy.Lighten up and live a little. Blowing up caps and showing the resultant video isn’t any less productive than watching TV for an hour.Sometimes stupid things like that are a nice distraction.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397956",
"author": "GameboyRMH",
"timestamp": "2011-05-25T20:27:22",
"content": "Sooo…what am I looking at in this pic?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398001",
"author": "Shadyman",
"timestamp": "2011-05-25T22:01:48",
"content": "@GameboyRMH:The innards of a Freescale MC13224 ARM7TDMI-and-Zigbee SoC",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398051",
"author": "Eric",
"timestamp": "2011-05-26T00:10:46",
"content": "What is the benefit of doing this?Its interesting to see how he goes about it, but what is the end result?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398102",
"author": "sickoboi",
"timestamp": "2011-05-26T04:42:23",
"content": "that’s sick.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398125",
"author": "wardy",
"timestamp": "2011-05-26T06:55:28",
"content": "The end results are that he managed to get out all the secrets in the on-board storage without releasing the magic smoke. This chip still works (unless I’m misunderstanding what’s happening in this hack).This reminds me of that hack from a year or two ago where they russian guy dissected and gained access to an Infineon encryption IC.All we need now is the ability to errode the lids off ICs using regular household chemicals (toothpaste and bug spray perhaps?)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398151",
"author": "Drone",
"timestamp": "2011-05-26T09:44:08",
"content": "Didn’t he violate the DMCA by doing this? Uh Oh… Now they’re going to come for him. Or maybe they’ll just stick a GPS tracker on his car or feel up his private parts for awhile.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398497",
"author": "DoNotHarm",
"timestamp": "2011-05-27T08:41:45",
"content": "Money well spent…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "472739",
"author": "slaxtrack",
"timestamp": "2011-10-05T15:20:39",
"content": "I love it !!!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,183.341283
|
||
https://hackaday.com/2011/05/25/hacked-phone-runs-zork-gets-lamp/
|
Hacked Phone Runs Zork, Gets Lamp
|
Brian Benchoff
|
[
"classic hacks"
] |
[
"fitpc",
"tdd",
"zork"
] |
A few months ago, [Ulysses] had a project in mind that would run Zork on a TDD. Although it was a bit of a struggle getting the project ready in time for the Bay Area Maker’s Faire, the accompanying
build blog
tells us it was more than worth the effort.
After hooking up the guts of the phone to an Arduino Pro, A modem was modified so the acoustically coupled TDD could be interfaced. Although the TDD display is only one line, [Ulysses] is transmitting the text at only 45.5 baud, So even the slowest reader could keep up with the story. For running the actual code, initial attempts at using an Arduino Pro, and then Arduino Mega proved unsuccessful because of the limitations of sram in these AVRs. After discarding the idea of running Zork on an Arduino, the project was finished with a single board FitPC computer mounted inside the phone.
The code of the project runs
Zork
on a port of
the Infocom Z-code Interpreter Program
, or ZIP. A lot of interactive text adventures were put out in the Z-code format, so we’re guessing it would be trivial to have this project run
Leather Goddesses of Phobos
, or the amazing
Hitchhiker’s Guide to the Galaxy
. It’s a very nice project, and we could easily see ourselves sitting down with this project, a two liter bottle of Shasta, and an all-Rush mix tape on a Saturday night.
| 14
| 14
|
[
{
"comment_id": "397849",
"author": "Aaron",
"timestamp": "2011-05-25T15:22:35",
"content": "Cute case mod, I guess.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397852",
"author": "fartface",
"timestamp": "2011-05-25T15:39:11",
"content": "Why not store Zork in a eeprom and simply do branching reads for area blocks? IT certainly is withing the ability of a Arduino to run zork.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397856",
"author": "fartface",
"timestamp": "2011-05-25T15:46:57",
"content": "http://dangerousprototypes.com/tag/pic-z-machine-emulator/In fact here’s an old project he could have started with… 5 minutes of google.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397857",
"author": "Ray",
"timestamp": "2011-05-25T15:49:32",
"content": "I was going to say “InB4 I could have made it work on an Arduino” but I was too late. -_-‘Great hack!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397858",
"author": "fartface",
"timestamp": "2011-05-25T15:49:52",
"content": "https://picasaweb.google.com/benwilk/ArduinoTextAdventure?authkey=qRspOKjzijQ#",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397875",
"author": "ehrichweiss",
"timestamp": "2011-05-25T16:32:37",
"content": "I just got a dog…guess what he’s named? Yep, Zork.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397879",
"author": "Steve",
"timestamp": "2011-05-25T16:45:21",
"content": "Please send me a copy of that all-Rush mix tape, thanks.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397890",
"author": "LSK",
"timestamp": "2011-05-25T17:16:18",
"content": "This suggests a really good idea: Connect the device to text-to-speech and have the game be played entirely through the phone and keyboard, without a screen. It’d be amusing and good for blind people.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397906",
"author": "jeditalian",
"timestamp": "2011-05-25T18:14:43",
"content": "you can play zork via SMS if you text ZORK to 41411. i used to, anyway, when i had a physical keyboard on my phone. somebody should mod an Atrix to have a physical keyboard, idk why Android + good specs + keyboard is an invalid combination.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397973",
"author": "mike",
"timestamp": "2011-05-25T21:06:31",
"content": "an avr is easily capable of running zork, just check out this sitehttp://test.spritesmods.com/?art=avrcpm&page=1",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398025",
"author": "pookie",
"timestamp": "2011-05-25T23:03:51",
"content": "TDDs give me tingles. Love the HW.Rossum did it on avr microtouch recently.http://hackaday.com/2011/04/20/zork-on-the-microtouch/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398029",
"author": "George",
"timestamp": "2011-05-25T23:24:02",
"content": "Wait, he’s got a $40 Seagate Dockstar box sitting there in the picture, and he bought an Atom-powered SBC… to run Zork?There is no kill like overkill.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398110",
"author": "wa5znu",
"timestamp": "2011-05-26T05:27:05",
"content": "I sat down to play with this and the builder offered me a map. I averted my eyes quickly!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398480",
"author": "Max",
"timestamp": "2011-05-27T07:09:10",
"content": "@LSK: Just had a similar thought – so when do we see the next plain old telephone equipped with a speech module and an Ethernet cable, to ring then (when picked up) read out loud twitter updates every time they happen for a twitter account…? :)))",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,183.391347
|
||
https://hackaday.com/2011/05/25/hand-cranked-magnet-machine-is-endless-fun/
|
Hand-cranked Magnet Machine Is Endless Fun
|
Mike Nathan
|
[
"Misc Hacks"
] |
[
"crank",
"eddy current",
"machine",
"rare earth magnets",
"wood"
] |
We can’t think of a single person who doesn’t enjoy playing with a handful of rare earth magnets now and again. We know that [Dave Johnson] certainly does. As a gift to his father in law,
he constructed a magnificent machine
that does little more than manipulate spherical rare earth magnets with hypnotizing grace.
The machine is constructed almost entirely from wood, save for a few fasteners and rods. Even the gears have been carefully cut from wood, with special attention paid to ensure smooth operation. When cranked, the machine slices off a single magnet from one end of a long chain, passing it along to a lift arm. The lift arm deposits the magnet into a metal tube, and with the help of eddy currents, it drifts slowly down before being redeposited at the end of the magnet chain.
Be sure to check out a video demonstration of the machine after the break, it really is fun to watch.
[via
LaughingSquid
]
[youtube=http://www.youtube.com/watch?v=W7REmfZ6O5U&w=470]
| 41
| 41
|
[
{
"comment_id": "397815",
"author": "TheCitySpiders",
"timestamp": "2011-05-25T13:21:55",
"content": "Neato Frito !!:D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397816",
"author": "kj",
"timestamp": "2011-05-25T13:26:39",
"content": "i think it’s missing an arduino or two ;)and does magnets are fun with or without the machine",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397817",
"author": "Sobachatina",
"timestamp": "2011-05-25T13:32:03",
"content": "That is mesmerizing. The smoothness of the motion is especially impressive. Well done.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397818",
"author": "Paul",
"timestamp": "2011-05-25T13:32:54",
"content": "Whoa, make sure you watch the video far enough to see the plastic worm gear pulling the “chain” of magnets…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397819",
"author": "Frobius ignafart",
"timestamp": "2011-05-25T13:33:20",
"content": "That aluminium tube should get warmer..",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397820",
"author": "Dave",
"timestamp": "2011-05-25T13:33:44",
"content": "I love the demonstration of Lenz’s law through the tube. Nice build!http://regentsprep.org/Regents/physics/phys08/clenslaw/default.htm",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397822",
"author": "Mike",
"timestamp": "2011-05-25T13:53:42",
"content": "That is a little hypnotic to watch.If I were to build version 2 of the machine, I would go with a small motor to keep it going, and acrylic at least for the front, so you can watch the worm gear and the snaking chain of balls running through the inside.Wonderful build.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397827",
"author": "Alex Parting",
"timestamp": "2011-05-25T14:27:43",
"content": "amazing",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397828",
"author": "Koray",
"timestamp": "2011-05-25T14:28:39",
"content": "Lenz’s law! That’s exactly what I was thinking! Awesome.K.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397830",
"author": "|)ave",
"timestamp": "2011-05-25T14:30:14",
"content": "Amazing! Would love to build one. I agree with the version 2 idea. Wonder if you could paint every other magnet without messing it up, just for effect. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397831",
"author": "M",
"timestamp": "2011-05-25T14:30:45",
"content": "The way the hand crank cog can be put in or take out, you could make a modular motorized crank fit in the same place as long as it braced against some other part of the structure to keep from spinning in place.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397833",
"author": "brad",
"timestamp": "2011-05-25T14:32:06",
"content": "finally a use for all those wootoff buckyballs!!!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397837",
"author": "Colecago",
"timestamp": "2011-05-25T14:38:49",
"content": "Greatest thing ever.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397842",
"author": "BobDobbs",
"timestamp": "2011-05-25T15:04:07",
"content": "Mormons wont believe in it",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397846",
"author": "HackerK",
"timestamp": "2011-05-25T15:12:57",
"content": "Wow! just Wow!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397850",
"author": "Chris",
"timestamp": "2011-05-25T15:23:03",
"content": "I am curious to know what Dave does for a living. He’s obviously quite gifted in several respects.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397851",
"author": "Robo",
"timestamp": "2011-05-25T15:33:00",
"content": "Pretty cool, the giant ball chain is amusing, hopefully we will see this contraption integrated into a larger project in the future",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397853",
"author": "Jake",
"timestamp": "2011-05-25T15:39:40",
"content": "Life will rue the day it thought it could give Dave Johnson magnets!!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397861",
"author": "mormon",
"timestamp": "2011-05-25T16:01:26",
"content": "I believe it.It’s science/engineering not magic.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397862",
"author": "Hirudinea",
"timestamp": "2011-05-25T16:01:41",
"content": "That is useless, uselessly AWSOME!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397869",
"author": "strider_mt2k",
"timestamp": "2011-05-25T16:16:32",
"content": "Delightful!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397884",
"author": "DanJ",
"timestamp": "2011-05-25T16:56:10",
"content": "I concur with everyone else. Dave, what a clever, beautiful and fun project! Great job.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397894",
"author": "Jay",
"timestamp": "2011-05-25T17:29:10",
"content": "I’ve been waiting for someone to suggest that the current generated in the copper tube could run a motor to power the whole thing. Perpetual motion arguments are always fun on the internet, lol.Excellent build, and I absolutely loved the chain of magnets!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397895",
"author": "Brennan",
"timestamp": "2011-05-25T17:32:50",
"content": "This is fantastic, and I wish I had the patience to build one. But I don’t.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397898",
"author": "FDP",
"timestamp": "2011-05-25T17:43:12",
"content": "I was getting ready to be unimpressed based on the still, but this is f*ing fantastic. My only gripe in the noise (minus the clinking of the magnets). I wonder if it is mostly coming from the linkage & crank assembly…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397900",
"author": "Matt",
"timestamp": "2011-05-25T17:52:58",
"content": "The chain on the inside is the best part in my opinion. That is such a cool idea!In version 2 I’d like to see some “gravity defying” magnets.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397910",
"author": "j s",
"timestamp": "2011-05-25T18:25:02",
"content": "A microcontroller? The best thing to do is to keep it as simple as possible. Add too many complications and problems can arise.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397926",
"author": "wardy",
"timestamp": "2011-05-25T19:19:10",
"content": "How come the magnets don’t just clump together into a huge mess when they end up spiralling around that vertical wooden rod? And how do they unwrap neatly back into the “thread”?Magical.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397931",
"author": "NeatBasis",
"timestamp": "2011-05-25T19:29:37",
"content": "Wicked!! The spirals of magnets is a cool touch.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397948",
"author": "Soul Eater",
"timestamp": "2011-05-25T20:07:41",
"content": "Just the most amazing machine of wood i’ve ever seen Good Job",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398006",
"author": "Daley",
"timestamp": "2011-05-25T22:12:30",
"content": "Anyone check out some of his other videos on youtube? The man is truly a thinker with an eye for art.Hat’s off to him.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398031",
"author": "Aaron B",
"timestamp": "2011-05-25T23:35:57",
"content": "Who doesn’t love playing with magnets. I keep a stack at my desk at work for those “thinking” times. That looks like an impressive creation.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398078",
"author": "wilson skatalloosdt, the guy across the street",
"timestamp": "2011-05-26T02:54:55",
"content": "awesome…totally awesome!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398090",
"author": "Stevie",
"timestamp": "2011-05-26T03:35:14",
"content": "That is insanely impressive. That’s a true accomplishment! This guys got some real skills",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398107",
"author": "Alan Lunan",
"timestamp": "2011-05-26T05:24:13",
"content": "I’m Into Marble Runs, Windmills, Etc ! Question :Why Crank By Hand ? A Simple Set Of Blades Would Operate This Machine ! Ingenious Marble Runs Can Be Seen On Utube ! The Japanese Have One In A Forest ! It Plays Classical Music ! Gravity Powered !!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398165",
"author": "Kitesonic74",
"timestamp": "2011-05-26T11:19:26",
"content": "The inner ball-rope is Awsome. Nice work!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398194",
"author": "Lager Monster",
"timestamp": "2011-05-26T13:35:39",
"content": "How about have balls fall through a coil to generate a charge to light a LED.Incororate a joule thief and super caps . . .Outstanding build BTW :-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398220",
"author": "Dave Johnson",
"timestamp": "2011-05-26T15:09:38",
"content": "Thanks for all the great comments! It’s enormously satisfying to me that so many people like my little machine.I can’t say this strongly enough: if you have the slightest mechanics bent, or puzzle bent, or science bent (or all three), get some of these magnets.My hope is that people will get inspired to build more magnet machines. The possibilities are truly endless. Add some electronics and coils and I think you could “launch” the magnets (although, being spheres, they might just flip over…use disks!). How about a machine that reassembles the magnets into the canonical cube? C’mon everybody, get busy!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398482",
"author": "Max",
"timestamp": "2011-05-27T07:16:33",
"content": "Now, all we need to do is tap the falling magnet’s energy with a coil and use it to power a motor in the place of the handle. A proper perpetuum mobile at last…! World domination is finally at hand! Mwuhahahaha!!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398576",
"author": "Alex",
"timestamp": "2011-05-27T16:27:02",
"content": "That rear view of the spiral of magnets is a total win and a new project idea on the stack…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "406631",
"author": "Doug",
"timestamp": "2011-06-16T15:07:13",
"content": "Amazing.. Found this while searching for machine that will take in a random mass of magnet balls and form then into a string, coiling it into a tube.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,183.472267
|
||
https://hackaday.com/2011/05/25/wireless-rover-has-two-guns-one-for-each-of-ya/
|
Wireless Rover Has Two Guns…one For Each Of Ya
|
Mike Nathan
|
[
"Robots Hacks"
] |
[
"airsoft",
"linksys",
"nunchuck",
"robot",
"rover",
"servo",
"wifi",
"wii"
] |
We never really get bored with remote-controlled rovers around here,
especially when they involve reusing some old hardware as well as lasers
. [Tycoon] wrote in to share his creation, which he has dubbed “Texas Ranger”.
Texas Ranger is built around an old Linksys WRT54GL router, which provides the rover’s WiFi connectivity as well as the serial interface through which everything else is controlled. The rover features a pair of PIC microcontrollers, which handle all of the servo control as well as telemetry calculations.
An onboard camera gives the operator a driver’s seat view of the action, allowing for precise control of the vehicle. Laser triangulation is used to help measure object distance, and a pair of airsoft pellet guns straddle the camera for whenever [Tycoon] feels like making his presence known. One feature we are especially fond of is the pair of Wii nunchucks which the rover uses to monitor its position. Always aware of its operating angle, it auto-adjusts the camera to compensate for uneven surfaces, guaranteeing that [Tycoon] doesn’t have to tilt his head to see straight.
Keep reading to see a quick demo video he shot of Texas Ranger in action.
[youtube=http://www.youtube.com/watch?v=Z6uafvVKjxc&w=470]
| 9
| 9
|
[
{
"comment_id": "397803",
"author": "JamieWho",
"timestamp": "2011-05-25T11:46:02",
"content": "That. was. awesome.Now I know what to do with that spare router I took apart in the garage last year.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397808",
"author": "ChalkBored",
"timestamp": "2011-05-25T12:37:05",
"content": "I’m glad that quiet operation is never a priority when people build kill-bots. Means that it won’t be sneaking up on me while I’m listening to Rob Zombie.It’s got a lot of nice features, and the web interface seems well thought out. Just needs to take snapshots of it’s victims as they’re getting pelted by plastic bullets, then put them up on a website as trophies.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397826",
"author": "Matthew Wiebe",
"timestamp": "2011-05-25T14:26:41",
"content": "“Yer so drunk, yer probably seein’ double!”….“Well, I’ve got two guns — One for each of ya!”Gotta be the best Val Kilmer line ever!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397839",
"author": "Drake",
"timestamp": "2011-05-25T14:49:02",
"content": "coming soon to grade school hallways and computer science majors dorm rooms near you",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397840",
"author": "caleb",
"timestamp": "2011-05-25T14:49:54",
"content": "wouldnt this be an example of an ITAR nono? not that it should stop any of us :-D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397863",
"author": "Hirudinea",
"timestamp": "2011-05-25T16:02:21",
"content": "Terminator T-.1?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397865",
"author": "jadon",
"timestamp": "2011-05-25T16:07:48",
"content": "tombstone reference FTW",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397901",
"author": "Matthew Wiebe",
"timestamp": "2011-05-25T17:56:18",
"content": "The best damn heroin addicted western movie ever!I mean that, too.I really like it.BAM!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397979",
"author": "steve",
"timestamp": "2011-05-25T21:21:43",
"content": "It’s all fun and games until someone loses an eye- wait… two eyes. Nice built.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,183.576549
|
||
https://hackaday.com/2011/05/24/building-a-brushless-motor-controller/
|
Building A Brushless Motor Controller
|
Mike Nathan
|
[
"Misc Hacks"
] |
[
"brushless motor",
"controller",
"h-bridge",
"half-bridge"
] |
Brushless motors and the way in which they are controlled can be a bit of an enigma to those just starting out in hobby electronics. [Andrew] from spingarage thought it would be helpful to put together
a quick tutorial showing how he built a simple brushless motor controller
in about a day’s time. He constructs everything on protoboard from components he acquired at RadioShack in order to demonstrate the ease of sourcing parts and building a brushless motor driver.
While he skips most of the theory behind brushless motor control itself, he does touch on the signaling these motors require for movement as well as how motor position is determined. Specifically, he expands on how half-bridges can be used to create the sine wave signaling required by a single motor input, as well as how three of these can be combined to drive a brushless motor.
The post is the first in a series of posts about brushless motors, so we should see some code examples and some practical applications in the near future.
| 12
| 11
|
[
{
"comment_id": "397672",
"author": "andrew",
"timestamp": "2011-05-24T23:12:27",
"content": "Not a bad intro, kudos for the good writeup, decent wiring and photos.One thingI noticed though is that the design of the high side and the design of the low side of the half bridges is not symmetrical. It will take longer to turn on the high side than the low side and any asymmetry is nasty. The low-side should be designed to use two transistors as well (even though technically unnecessary) in order to get the deadband calculations cleaner.Ideally, though, he should be using simple FETs. Much easier to drive, higher current in the same package, way faster, and none of the nasty bipolar transistor gotchas (although there are some nasty FET gotchas).Looking forward to seeing more installments of this project!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "2832559",
"author": "Jack",
"timestamp": "2015-12-10T20:36:58",
"content": "you want to have a delay between turning on and turn off so that u don’t get shoot thru currents",
"parent_id": "397672",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "397779",
"author": "ino",
"timestamp": "2011-05-25T08:48:43",
"content": "You definitely should use MOSFET (as andrew mentioned) to drive brusless motors.The RDSon parameter is the key for not wasting power.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397786",
"author": "Bakamoichigei",
"timestamp": "2011-05-25T09:56:17",
"content": "I was looking for information on making an ESC for brushless motors the other day, and I found out that Microchip has posted two Application Note documents on the subject with schematics and source.I can’t find the links at the moment, but they’re AN847 and AN857, and it’s all very interesting.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397791",
"author": "Buzz",
"timestamp": "2011-05-25T10:19:41",
"content": "The OpenPilot UAV project is going about making their own brushless controler. There is already a working prototype. Check it out:http://forums.openpilot.org/forum/24-esc-development/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397810",
"author": "Keith",
"timestamp": "2011-05-25T12:45:58",
"content": "Nice work!Radio Shack … Booo!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397872",
"author": "strider_mt2k",
"timestamp": "2011-05-25T16:20:29",
"content": "Keep booing Rad Schmack.Pretty soon they’ll be gone and boos will turn to boo hoos.Get the good out of ’em while you can.VERY nicely done project, and lo and behold accessible to all who are in range of a Rad Schmack that still carries parts.yay fot that",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398142",
"author": "Stew",
"timestamp": "2011-05-26T08:41:47",
"content": "@BakamoichigeiAN847 – RC Model Aircraft Motor Controlww1.microchip.com/downloads/en/AppNotes/00847a.pdfAN857 – Brushless DC Motor Control Made Easyww1.microchip.com/downloads/en/AppNotes/00857a.pdf",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "429838",
"author": "chami",
"timestamp": "2011-08-07T09:53:08",
"content": "It would be nice to have caps connected to the base of the driver transistors. Then the voltage will ramp up bit slowly and spikes will be less and corners of the square pulses will be slightly rounded. Same way, a few turns of wire on the output of the power transistors will provide a better drive. Extra: six 0.22 uF 50V ceramic caps and 5-20 turns of cu wire made into a solinoid.The mathematica example is apparently wrong. We need sin(x), sin(x+2*pi/3) and sin(x+4*pi/3). To see the graphs, we need mathematica installed (expensive!)This arrangement will not be able to see back EMF produced. No speed information will come from the motor or the driver.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "1998550",
"author": "vikram",
"timestamp": "2014-10-15T10:04:48",
"content": "Sir , can u please send me the circuit of that board. Im very much eager to do it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "3093427",
"author": "ron",
"timestamp": "2016-07-19T19:03:39",
"content": "I can’t get to the link you posted.I also want to build An ESC similar to the ones in an Ebike",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "3093429",
"author": "ron",
"timestamp": "2016-07-19T19:05:22",
"content": "wheres the tutorial to make the ESC",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,183.525296
|
||
https://hackaday.com/2011/05/24/i2c-arduino-gps-shield/
|
I2C Arduino GPS Shield
|
Mike Nathan
|
[
"Arduino Hacks"
] |
[
"arduino",
"gps",
"i2c",
"serial"
] |
[Wayne] wrote in to share an item he just finished working on,
an I
2
C GPS shield for the Arduino
. While other GPS solutions have existed for quite some time, his caught our eye due to its feature list.
The shield removes a good bit of the hassle associated with parsing raw NMEA data from traditional GPS addons. While you have the option to communicate with the GPS module over serial in order to obtain the raw data, the use of the I
2
C interface makes getting the most commonly used GPS data a breeze. The GPS module itself can be set to update at anywhere from 1 to 10 Hz, and [Wayne] says that the I
2
C bus blows away the oft-used 9600 baud serial interface. While I
2
C is primarily used for receiving data, it can also be utilized to configure the GPS via its control registers, allowing for on the fly settings tweaks.
While he does sell the units pre-assembled at a competitive price, [Wayne] also provides a full schematic, making this an easy afternoon project once you have sourced the proper components.
| 11
| 11
|
[
{
"comment_id": "397669",
"author": "Elias",
"timestamp": "2011-05-24T23:02:00",
"content": "Is the antenna seriously going to be under another PCB when in use?Or do I just misunderstand the board layout.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397679",
"author": "monster",
"timestamp": "2011-05-24T23:30:38",
"content": "if you put the board under the arduino and flip it upside down the antenna would be on topi assume",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397682",
"author": "TheCreator",
"timestamp": "2011-05-24T23:40:56",
"content": "So you could pay extra for on board data parsing or just use the TinyGPS library and a string tokenizer for free. If you don’t want to eat up your serial I/O just use the Software Serial library as well.i guess if you have piles of money laying around this would be great.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397698",
"author": "Jason",
"timestamp": "2011-05-25T00:56:05",
"content": "If you read the product page you’ll see that it has stackable headers. You can see the female part in the picture. Under the shield are male headers to connect to the Arduino (or another shield) below. The antenna wouldn’t be under a circuit board unless you stacked something on top. It’s pretty common to see a full set of headers on shields so you can still access all of the pins that are inherently covered by the shield itself.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397847",
"author": "lwatcdr",
"timestamp": "2011-05-25T15:18:00",
"content": "Now if he would have just added some accelerometers and a connector for a Wii Motion plus to plug in. It is not a bad price for a limited market devices like this.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397855",
"author": "David MacKenzie",
"timestamp": "2011-05-25T15:46:34",
"content": "This is awesome! I needed this for a long time.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397860",
"author": "Liam",
"timestamp": "2011-05-25T15:58:16",
"content": "Where can one buy these modules?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397886",
"author": "tdbone1",
"timestamp": "2011-05-25T17:08:15",
"content": "i dont understand even what it is.“gps shield”does it shield a gps signal so we can not get it?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397915",
"author": "j s",
"timestamp": "2011-05-25T18:45:40",
"content": "I2C was developed by Philips back in the early 80s as a means of simplifying communication between devices on a printed circuit board. It was first used in Philips consumer electronics (i.e. CD players) not only as an internal data bus but also as a means of controlling external devices. It only needs one pair of wires for each direction and supports up to 1024 devices on a single bus.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398100",
"author": "ewertz",
"timestamp": "2011-05-26T04:22:33",
"content": "@tdbone1“shield” == “board” in Arduinese.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "398572",
"author": "Keith",
"timestamp": "2011-05-27T16:16:19",
"content": "@tdbone1First visit to Hackaday? ;-)",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,183.625531
|
||
https://hackaday.com/2011/05/24/automated-faucet-keeps-your-cat-watered/
|
Automated Faucet Keeps Your Cat Watered
|
Jesse Congdon
|
[
"Arduino Hacks",
"home hacks"
] |
[
"arduino",
"cats",
"faucet",
"xbee"
] |
Like many of us [Chris Dillon]’s cat prefers to drink cold fresh water directly from the tap. However, unlike us, [Chris]’s feline buddy is too preoccupied with cat stuff to bother flipping off the faucet after its use. As it turns out, this was an excellent opportunity not only for [Chris] to flex his project muscles, but also to lay the groundwork for future home automation projects. While most of us may go for a simple solenoid [Chris] had to make the rig completely reversible. The result is an automated
faucet control
which involves an infrared sensor, Arduino, and tight fitting rail system with a servo to operate the sink handle.
After getting all of the hardware and the sensor sorted [Chris] went on to add a data logging PC to the mix. The faucet setup communicates with a Linux server via Xbee modules, and populates a
MongoDB
database. The setup even allows [Chris] to flag false positives (human sink use for example) and produce charts of his feline friend’s water usage. We suspect the cat will be none too pleased when it gets its water bill.
Don’t forget to check out [Chris Dillon]’s
site
for details on the project including code and a list of lessons learned. Also, since this is the internet after all,
we
have
several
other
cat
related
projects
for
your
viewing
pleasure
.
[Thanks Chris Burrows (and nephew)]
Check out a video of the setup in action after the jump.
[youtube=http://www.youtube.com/watch?v=T0-EQqTW3Og&w=470]
| 21
| 20
|
[
{
"comment_id": "397634",
"author": "Derrick",
"timestamp": "2011-05-24T21:07:53",
"content": "Overkill much? I think an IR sensor and a motor would of sufficed…even a solenoid is a bit too much..Logging was definitely overkill and then more overkill on top with a sprinkling of overkill.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397635",
"author": "sm10sm20",
"timestamp": "2011-05-24T21:15:22",
"content": "Overkill is often confused with exploring new technology and concepts. Is the logging required? Absolutely not! But Chris had something new to learn or something to gain from throwing this into the project. Love it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397637",
"author": "Tyberius",
"timestamp": "2011-05-24T21:20:03",
"content": "Or just buy an automatic faucet off the shelf…",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "397646",
"author": "dexter",
"timestamp": "2011-05-24T21:43:43",
"content": "Yeah. That’s exactly why we hang out at hackaday.com…",
"parent_id": "397637",
"depth": 2,
"replies": []
}
]
},
{
"comment_id": "397638",
"author": "florinzgtrst",
"timestamp": "2011-05-24T21:21:37",
"content": "So… I just got tired of watching lol cats on the “internets” and I say to myself “gee… I should skip past hackaday and see if there’s anything new posted” and WHAM! cat picture.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397639",
"author": "NotMe",
"timestamp": "2011-05-24T21:23:34",
"content": "Nothing i want to see in a bathroom.Could be a little more discrete.Nice cat.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397641",
"author": "Jay",
"timestamp": "2011-05-24T21:27:45",
"content": "That constant dripping is probably pretty bad for his bill too.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397651",
"author": "Booker T. Worthington",
"timestamp": "2011-05-24T22:02:12",
"content": "As I always say, “If you can’t over-engineer in your house, where can you over-engineer?”Booker probably would have bought an automatic faucet on eBay for $64.99/free shipping.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397661",
"author": "vonskippy",
"timestamp": "2011-05-24T22:40:49",
"content": "I’d rather have a robo-cat then a cat with a robo-faucet.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397663",
"author": "supershwa",
"timestamp": "2011-05-24T22:47:48",
"content": "Never let a cat tell you what to do. They’re evil and selfish. Get a dog.;P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397676",
"author": "TheCreator",
"timestamp": "2011-05-24T23:27:30",
"content": "For those of you who also hate cats this hack reminded me of this hilarious video that includes both hacks and cats.Enjoy.http://www.youtube.com/watch?v=uIbkLjjlMV8&feature=youtu.be",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397677",
"author": "GranTotem",
"timestamp": "2011-05-24T23:28:56",
"content": "Is there really a need to criticise everyones creation?Cant you see the creativity he put in this?If he wants to put logging, why not?Let him experiment.Nice project :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397684",
"author": "chocobo_rider",
"timestamp": "2011-05-24T23:50:26",
"content": "The cat will play with the water more than drink it xD",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397686",
"author": "rasz",
"timestamp": "2011-05-24T23:56:48",
"content": "how about a bowl?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397692",
"author": "ferdie",
"timestamp": "2011-05-25T00:42:29",
"content": "lol thats a overkill on tec for water for the cati no a simple way whit no tectake a coke botel put water in the coke botelthan hang it upside down in a bowl off water you have now 2 liter water for you cat so it can take a weak or more to drink it empty",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397693",
"author": "anti-fanboi",
"timestamp": "2011-05-25T00:43:15",
"content": "juz goes to show you: Thinking is the most important aspect of any make/hack project.WTF! This thing has me scratching my head, but we’ll keep it constructive ;)All that microrax and servo: T/Y junction, mains pressure solenoid and maybe some couplers? all mounted under the sink – tidy.ruby+rails, just to monitor the serial port and store data? why not perl or bash?mongoDB? “to the cloud” *roll eyes*. c’mon, this is what SQLite is for! Hell even a CSV would be more appropriate.A breadboard as a patch pannel? personally I don’t use them for prototyping – too flakey!/dig to complete the “designed by an MBA” meme: where’s the iPad interface and why doesn’t it tweet?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397701",
"author": "Dino",
"timestamp": "2011-05-25T01:01:34",
"content": "KITTEHS!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397702",
"author": "webscale",
"timestamp": "2011-05-25T01:08:43",
"content": "mongodb? at least it scales",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397708",
"author": "X",
"timestamp": "2011-05-25T02:18:07",
"content": "With so many cat-related hacks, shouldn’t there be an actual “cats” tag??",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397823",
"author": "squarism",
"timestamp": "2011-05-25T14:03:50",
"content": "I’m the guy who built this, appreciate the comments. The dripping is gone and the box is under the sink now. The video was my ‘alpha’ run. A solenoid would have been destructive on my pipes, I’m not a plumber. I did talk with a guy who had done the solenoid way, it’s a cleaner solutions but not without problems.The logging was really to answer the question “does she drink when we’re away?” and she doesn’t. She just sleeps. Plus, it was a chance to hack on javascript. :P",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "399423",
"author": "nick",
"timestamp": "2011-05-29T04:57:39",
"content": "I am extremely disappointed with this thread. This guy made something cool. He spent time designing it, building it, and tweaking it. He played around and added fun features. It solves a problem for him and gave him experience & a fun time building it. Yet all the commenters have to say is “overkill” “buy an automatic faucet off the shelf” “*roll eyes*” etc. Hackaday is a place for people’s creations. Chris created this. Why shouldn’t he be able to do it however he wants? If you would have done it better, DO IT BETTER, don’t yell at him and complain about it. He did it his way, enjoyed doing it, and it works! And it’s in the spirit of hacking, rather than just buying stuff! It’s good to encourage people to enjoy making things. With the attitude of the commenters on this site, I’m surprised anyone submits anything anymore. I know I don’t want to submit my projects just to see people say “should have done this” or “why the hell did you do this”… This community should be more welcoming to people doing stuff, rather than being so incredibly jealous and hostile.Aside from that rant, I think that this project is pretty cool! I’ve often thought about ways to control my faucet, and this definitely gives me some cool ideas regarding making a reversible water control system. Thanks for submitting, squarism!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,183.687291
|
||
https://hackaday.com/2011/05/24/rf-robot-controlled-from-a-terminal-window/
|
RF Robot Controlled From A Terminal Window
|
Mike Szczys
|
[
"News"
] |
[
"arduino",
"module",
"receiver",
"RF",
"transmitter"
] |
This robot can be controlled from the terminal window
of your computer. You can see a manilla-colored board mounted between the wheels. This is the RF receiver which has quite a long antenna that we’ve cropped out to get a better look at the bot itself. [Ashish] picked up an RF transmitter/receiver pair for about $4 and after the break you can watch him walk us through the method he’s using for control.
First off, he had to find a way to interface the transmitter with his computer. He decided to use an Arduino because sending data to it from the computer is as simple as writing to /dev/ttyUSB0. The Arduino sketch just listens for incoming characters on the serial connection and pushes them over the RF transmitter.
We like his development methods. In the video he shows the command syntax used to drive and stop the robot. Once he figured that out he wrote a shell script to send the bot on a preprogrammed square path. From there a bit more coding would give him real-time control which could be extended to something like
a web-based interface for smartphone control
.
Oh, and if you’re wondering about the bot itself it’s
a kit robot
which normally uses IR control. [Ashish] upgraded to RF since it doesn’t require line-of-sight to work.
[youtube=http://www.youtube.com/watch?v=XCPWYiKda0I&w=470]
[From the
tips box
and via
Hacked Gadgets
]
| 5
| 5
|
[
{
"comment_id": "397620",
"author": "Brett",
"timestamp": "2011-05-24T20:15:12",
"content": "Now someone just needs to build a wumpusbot.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397657",
"author": "jswanson",
"timestamp": "2011-05-24T22:28:47",
"content": "Awesome…he just one-upped me. I put together a little project last week, where I was writing to a 4×20 LCD using a CLI on my Ubuntu box and my Arduino.http://swantron.com/command-line-lcd-arduino-interface/Same principle…instead of using the serial monitor on the Arduino IDE, I was doing a “echo -n “text here” > /dev/ttyUSB0″ Sort of dirty, but it works.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397688",
"author": "jamieriddles",
"timestamp": "2011-05-25T00:05:12",
"content": "just bought me one of those wireless transmitter/recieversthose things are awesome!with good error correction the range is also impressivegood example:http://www.glacialwanderer.com/hobbyrobotics/?p=291",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397756",
"author": "somebody",
"timestamp": "2011-05-25T06:06:51",
"content": "I’m doing something similar but i use old laptop motherboard (from 1996 with pentium i586 mmx @100mhz, 40mb ram, 800mb hdd) with WiFi and linuxsome pic:http://db.tt/Vchr6AGhttp://db.tt/LiKRruthttp://db.tt/jSdm7Sfhttp://db.tt/6U2IPjThttp://db.tt/qKukHF6",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "397940",
"author": "Dale",
"timestamp": "2011-05-25T19:47:47",
"content": "That robot has a mcu on it already called a BasicATOM its completely reprogramable.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,377,183.76815
|
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