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https://hackaday.com/2010/05/18/cathode-ray-tube-leads-the-way-on-this-bot/ | Cathode Ray Tube Leads The Way On This Bot | Mike Szczys | [
"Robots Hacks"
] | [
"crt",
"i2c",
"robot"
] | [Daqq’s] latest creation is this little
robot with a CRT mounted on the front
. Obviously ‘why?’ is the wrong question here, but we know this is right up his alley considering his propensity for the less common like this
plasma ball Nixie tube
. The solidly-built bot uses two stepper motor controlled wheels and an omni-wheel on the front to create a trike. An ATmega128 controls the system but the real story here is the CRT. It requires a hefty voltage regulator for the -600V to +200V the Tungsram DG7-123 tube needs. Trouble along the way ranged from dealing with stray magnetic fields from the power supply, to mounting the fragile tube itself. Take a look at his detailed writeup linked above and join us after the break for the demo videos.
[youtube=http://www.youtube.com/watch?v=iKLxOsPKuAs]
[youtube=http://www.youtube.com/watch?v=Pxs6NJi0ONU] | 32 | 32 | [
{
"comment_id": "143257",
"author": "mrgoogfan",
"timestamp": "2010-05-18T19:23:26",
"content": "I sure hope he put dem der optoisolators in dat robity bot.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "143259",
"author": "Drew Mallager",
"timestamp":... | 1,760,377,441.093338 | ||
https://hackaday.com/2010/05/18/composing-music-with-the-force-trainer/ | Composing Music With The Force Trainer | Mike Szczys | [
"digital audio hacks",
"Toy Hacks"
] | [
"force trainer",
"ftdi",
"music",
"processing"
] | In the ongoing quest to make the Force Trainer useful [Hunter Scott] developed
a music composition platform for your mind
(channel Jack Black’s voice for the last half of that sentence). Using the
Force Trainer’s serial port
[Hunter] feeds the data stream into a computer via an FTDI cable and uses Processing to make the music. It’s good, and the demos on his site are worth the click, but we still can’t get enough of
the shocking video
from back in March. But we digress, let [Hunter] walk you through his setup in the video after the break.
[youtube=http://www.youtube.com/watch?v=G_vfuUmySLQ] | 9 | 9 | [
{
"comment_id": "143256",
"author": "Dheath",
"timestamp": "2010-05-18T19:14:59",
"content": "It would be sort of nice to have this thing to see how active the person is and based on that chooses the next song in the playlist.So, for example when I’m reading a relaxing book I might prefer classical ... | 1,760,377,441.376844 | ||
https://hackaday.com/2010/05/18/command-line-video-processing-using-foss/ | Command Line Video Processing Using FOSS | Mike Szczys | [
"Linux Hacks"
] | [
"ffmpeg",
"imagemagick",
"overlay",
"slice",
"sox",
"video"
] | [youtube=http://www.youtube.com/watch?v=12fQM7JwwpA]
[Daniel Paluska] is getting away from the point-and-click by
editing videos from the command line
. Using the free open source software packages FFmpeg, Imagemagick, and Sox he produces new clips from multiple videos with effects like overlaying, slicing, and assigning each video to a different quadrant. The last option would be useful for displaying different angled shots of the same thing all at once but we’re sure you can find a way to use them all. He is using shell scripts to automate some of the process but the commands are still easy enough to understand if this is your first foray into these tools. After all, great video production will go a long way toward becoming an
Internet sensation
. | 31 | 30 | [
{
"comment_id": "143218",
"author": "Nick McClanahan",
"timestamp": "2010-05-18T17:16:37",
"content": "Great video and demo!ffmpeg is really powerful & bash is the bomb for scripting, but it can be hard figuring out all the switches. I did something similar to stream & transcode podcasts for my mob... | 1,760,377,441.694768 | ||
https://hackaday.com/2010/05/18/modern-car-data-systems-lack-security/ | Modern Car Data Systems Lack Security | Mike Szczys | [
"Security Hacks",
"Transportation Hacks"
] | [
"CAN",
"can-bus",
"odb-ii"
] | Tomorrow
a team of researchers
will present their paper on
Experimental Security Analysis of a Modern Automobile
(PDF) at the
IEEE Symposium on Security & Privacy
. Much like the
racing simulators
we’ve seen they’re exploiting the ODB-II port to get at the vehicle’s Controller-area network, or CAN-bus. We’re not surprised at all that they can display custom text on the dashboard display or read sensor data from the car. What does surprise us is their exposé on how truly unsecured the system is. It seems that access to any device on the CAN-bus gives them unobstructed control of the car’s systems. Any device can send commands to any other device. They’ve even found a way to write malicious code to the car’s computer which can be programmed to erase itself in the event of a crash.
Much like RFID the security risks here are basically nill for the vast majority of consumers. We just find it a bit surprising that there’s apparently been little thought put into fortifying the communications between the safety systems such as the brakes on the vehicle. For instance, team experimented with sending random packets over the CAN-bus and stumbled across a way to lock the brake on just one wheel. To us it’s conceivable that a malfunctioning device on the network could start sending out damaged packets and cause a dangerous malfunction like this one.
The 14-page PDF linked above is a page-turner, check it out on
your hacked ereader
during lunch. | 65 | 50 | [
{
"comment_id": "143189",
"author": "Jonah",
"timestamp": "2010-05-18T16:23:09",
"content": "Does that mean that potentially talented people can writ some lines of codes and inject some sort of viruses in the computer car?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comm... | 1,760,377,441.522002 | ||
https://hackaday.com/2010/05/18/super-quick-and-cheap-trackball/ | Super Quick And Cheap Trackball | Caleb Kraft | [
"Peripherals Hacks"
] | [
"mouse",
"trackball",
"trash"
] | [Elgatoandaluz] has posted this guide on how to
tear apart a standard optical mouse and build a custom trackball
. He’s using a ping pong ball , mounted above the laser as the trackball itself, which seems like it would be a little lite, but functional. The case is scrap cardboard. We really like that you could toss this together relatively quickly and have a custom layout. He recommends using
Sakasa Mouse
for inverting the axes and
X-control for mapping the buttons
(direct download). | 18 | 17 | [
{
"comment_id": "143175",
"author": "Dustin",
"timestamp": "2010-05-18T15:01:42",
"content": "Not a ping pong ball, a deodorant roll-on ball with its factory “socket.” Mmm… musky…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "143176",
"author": "cobalt",... | 1,760,377,441.432592 | ||
https://hackaday.com/2010/05/17/magically-repair-avr-chips/ | Magically Repair AVR Chips | Mike Szczys | [
"Tool Hacks"
] | [
"atmega",
"attiny",
"AVR",
"high voltage",
"hvpp",
"rescue"
] | If you’ve ever spent time working with AVR microcontrollers you’ve probably set the fuse bits incorrectly at least once. The
ATmega fusebit doctor
will automatically repair the fuse bits and get you back in business until your next mishap. The ATmega8 that powers the device has the chip signatures for the ATmega family stored inside so it will automatically detect which chip you’re trying to ‘unbrick’. From there it looks up the correct fuse bits and resurrects the sick microcontroller. This is useful in recovering a chip that has serial programming disabled, used the reset pin as I/O, or just enabled an external clock without the necessary hardware to deliver on that feature.
This magic is taken care of by using High Voltage Parallel Programming. We’ve seen HVPP used in
the Arduino rescue shield
and it is a valuable
feature of the AVR Dragon
, our favorite AVR programmer, as well as others. Still, you can hardly beat the ease of plugging a dead chip into this board and pressing one button. Oh, did you brick a member of the ATtiny family? There’s
a rescue board for those too
.
[Thanks Stewe] | 30 | 30 | [
{
"comment_id": "143076",
"author": "op",
"timestamp": "2010-05-17T22:50:51",
"content": "but what if you mess up the fusebits on your fusebit doctor?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "143077",
"author": "mrgoogfan",
"timestamp": "2010-05-... | 1,760,377,441.58703 | ||
https://hackaday.com/2010/05/17/old-school-vending-machine-learns-new-tricks/ | Old School Vending Machine Learns New Tricks | Mike Szczys | [
"Beer Hacks",
"home hacks"
] | [
"beer",
"iphone",
"phidgets",
"qt100",
"soda",
"vending"
] | Thanks to craigslist [Chris] got his hands on a soda vending machine circa 1977. It still worked just fine (because things were still built to last back then) but he wanted to
add some super-secret upgrades to the beverage dispensary
. Two capacitive touch sensors were added to override the need for coins for those who know where to caress the beast, and iPhone support means that frothy beer is just a touch away.
The capacitive switches are using the same
QT100 chip we saw in the game of life
from last year. The whole thing runs off of a Phidgets board which we’ve seen in the past
using iPhone control to launch rockets
. See a demonstration of the features in the clip after the break. We’d love to do a hack like this but the problem is once you’re done, you’ve got a vending machine sitting in your house.
[youtube=http://www.youtube.com/watch?v=ba27y4_NDo4] | 25 | 20 | [
{
"comment_id": "143046",
"author": "Mr Bishop",
"timestamp": "2010-05-17T20:12:49",
"content": "Awesome concept, but bad business plan. Oh and Beer? that could get you into trouble just saying (unless its a country with loose laws)",
"parent_id": null,
"depth": 1,
"replies": []
},
{... | 1,760,377,441.325799 | ||
https://hackaday.com/2010/05/17/building-an-oak-telescope/ | Building An Oak Telescope | Mike Szczys | [
"Misc Hacks"
] | [
"oak",
"optics",
"telescope"
] | You might not think about the finish of your homemade telescope but if it’s build from solid oak you probably should. [Gregory Strike]
built this 8″ telescope
a few years back but just posted about it a few days ago. The optics are quite expensive but the rest of the build was done dirt cheap and he did a great job of it.That includes taking care to finish the oak boards that make up the octagonal body of the instrument.
This is much more approachable for the average hacker than something like the
22″ binocular build
(or going way too far and
building your own observatory
). [Gregory] developed his design after looking at a couple of others. If you need a bit of a push to get started
check out the telescope resource we ran across
in our days of Internet infancy. | 26 | 25 | [
{
"comment_id": "143023",
"author": "mess_maker",
"timestamp": "2010-05-17T18:56:57",
"content": "@sllabginummm… nope. BTW, what does that have to do with the telescope?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "143025",
"author": "Bob",
"timest... | 1,760,377,441.260293 | ||
https://hackaday.com/2010/05/17/tweet-a-watt-now-speaks-to-google-power-meter/ | Tweet-a-Watt Now Speaks To Google Power Meter | Mike Szczys | [
"google hacks",
"home hacks"
] | [
"google",
"power meter",
"python",
"tweet a watt"
] | Hackaday’s own [Devlin Thyne] has been working with Adafruit to come up with
a way to use the Tweet-a-Watt along with Google Power Meter
. Back in March we put out the word that
Google had unveiled the API for Power Meter
and [Devlin] is the first we’ve heard of to come up with a way to use your own equipment with the service. You can build your own or
use Adafruit’s kit
and the data pulled from your energy use will be nicely displayed using the big G’s tools. Right now there’s only support for one Tweet-a-Watt but we’d image this will evolve fairly quickly into a much larger house solution. Head over to
the Tweet-a-Watt code page
to get the source files for this project.
[Thanks PT] | 10 | 10 | [
{
"comment_id": "143006",
"author": "Nick McClanahan",
"timestamp": "2010-05-17T17:26:50",
"content": "I didn’t know about the PowerMeter API – looks pretty well documented. Only tracking 1 tweet-a-watt isn’t enough, but hopefully it will expand.Good stuff!",
"parent_id": null,
"depth": 1,
... | 1,760,377,441.632293 | ||
https://hackaday.com/2010/05/21/ubuntu-on-the-clarionmind-mid/ | Ubuntu On The ClarionMIND MID | Mike Szczys | [
"handhelds hacks"
] | [
"clarionmind",
"ubuntu",
"unetbootin"
] | [DeadHP1] has been rolling and optimizing his own
Ubuntu distributions for the ClarionMIND
. He calls his work Mindbuntu and he’s squeezing out quite a bit of performance from the mobile Internet device. The video is running at 800×400, as well as wireless, sound, Google Earth with GPS support, and even compiz. Install the image using
unetbootin
to place it on a thumb drive and you’ll have Ubuntu 9.04 to go in no time.
[Thanks Bob]
[ClarionMIND Photo courtesy of
Mobile Tech Review
] | 15 | 15 | [
{
"comment_id": "143987",
"author": "Tom",
"timestamp": "2010-05-21T16:32:22",
"content": "No 10.04 support?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "144000",
"author": "Sariel",
"timestamp": "2010-05-21T17:22:49",
"content": "@Tomubuntu 9.04... | 1,760,377,441.023195 | ||
https://hackaday.com/2010/05/20/automatic-fish-feeder/ | Automatic Fish Feeder | Mike Szczys | [
"home hacks"
] | [
"at89c2051",
"feeder",
"fish"
] | This
automatic fish feeder
didn’t take long to put together and it allows you to adjust how much food is dispensed. [Gagandeep Singh] built it around an Atmel AT89C2051 microcontroller. Like many of the
automated feeding systems
we see, this uses a character display and a few buttons for the user interface. We’re always curious at how they mechanically dispense the food. In this case, the motor seen at the left pulls open a sliding baffle which is pulled closed again by rubber bands at the right. It’s a bit more involved than
the last fish feeder we saw
, but your guess is as good as ours on which system works better. | 22 | 22 | [
{
"comment_id": "143816",
"author": "kirov",
"timestamp": "2010-05-20T20:32:34",
"content": "So i’d imagine this only works for pellet food. I wonder if he has had problems with it jammingI suppose another way you could construct the dispenser would be to have a rotating disk assembly",
"parent_... | 1,760,377,441.751193 | ||
https://hackaday.com/2010/05/20/urine-a-candidate-for-energy-independence/ | Urine A Candidate For Energy Independence | Mike Szczys | [
"green hacks"
] | [
"fuel",
"hydrogen",
"pee",
"urine"
] | We thought we were supposed to have fusion-power for our DeLorean by now but it perhaps
urine-power is just around the corner
instead. [Gerardine Botte] has been working on creating hydrogen from urine, the world’s most abundant waste product. The voltage needed to break apart the urea atoms is less than half that of water, and the way we see it, you’ve had the added benefit of already using the water once before creating the fuel. [Gerardine] also makes the point that urine has phosphorus in it which could be another useful outcome of the process because it is needed as an agricultural fertilizer. Does this mean that you can repay your designated driver by fueling up his vehicle after a night at the bar? It’s probably better than
doing the same for the battery of your cell phone
.
Hackers produced the first
vegetable-oil powered vehicles
so we’re throwing down the challenge of producing the first pee-and-go automobile. Good luck and wash your hands when you’re done.
[Thanks Peter] | 59 | 50 | [
{
"comment_id": "143801",
"author": "Thomas",
"timestamp": "2010-05-20T19:28:40",
"content": "That should stop people from trying to siphon your fuel with a garden hose and a gas can.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "143802",
"author": "mfsam... | 1,760,377,441.83509 | ||
https://hackaday.com/2010/05/20/personal-pencil-production-plant/ | Personal Pencil Production Plant | Mike Szczys | [
"classic hacks"
] | [
"pencil"
] | [vimeo=http://vimeo.com/9661763]
[Robb Godshaw] put together a pencil production line for home use. The whimsical assembly line starts with a graphite rod and extrudes clay polymer around it. From there it’s down a conveyor belt to get stamped and then into the oven made from a hacked toaster. The final step is to cut out a plug of eraser and attach it to the back-end of the pencil. This low-speed assembly line reminds us of
a Rube Goldberg machine
with all the wasteful steps cut out. | 36 | 36 | [
{
"comment_id": "143739",
"author": "Joe",
"timestamp": "2010-05-20T15:14:13",
"content": "Neat.They look pre-chewed.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "143741",
"author": "James",
"timestamp": "2010-05-20T15:26:18",
"content": "And a l... | 1,760,377,442.560982 | ||
https://hackaday.com/2010/05/20/keyboard-input-for-playstation/ | Keyboard Input For PlayStation | Jakob Griffith | [
"Peripherals Hacks",
"Playstation Hacks"
] | [
"data",
"entry",
"keyboard",
"kupid",
"PICAXE",
"playstation",
"ps1",
"ps2",
"text",
"thutmose"
] | Anyone who has tried their hand at RPG Maker 1 (or any text input with a controller) knows how difficult it can be typing long paragraphs into the console. [Thutmose] is here to save the day with
Kupid 1.0
(2.0 in production). A PICAXE takes ps/2 keyboard input and converts it to a series of d-pad button presses for PS1 and PS2 controllers, providing
quick data entry
compared to the previously monotonous task.
We’re happy to learn that the
source code and hardware
is released, meaning it has the potential to be easily adapted to any controller/console. | 10 | 10 | [
{
"comment_id": "143747",
"author": "t&p",
"timestamp": "2010-05-20T15:46:22",
"content": "people still use RPG maker? That was only good for poor kids, back-in-the-day, that couldn’t have their parents buy them a PC.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_... | 1,760,377,442.315611 | ||
https://hackaday.com/2010/05/19/balancing-cube-looks-more-like-a-star/ | Balancing Cube Looks More Like A Star | Mike Szczys | [
"Robots Hacks"
] | [
"balance",
"bender",
"borg"
] | [youtube=http://www.youtube.com/watch?v=gbT_XoSIlEo]
This
art-meets-robot has the grueling task of standing on one foot
all day long while
other robots get to bend
to their heart’s content. It balances on that single point by adjusting its center of gravity with six pendulum-like appendages. To make the system more like
the Borg
, each of those six modules shares sensor data with the rest and work together to keep the unit upright. Give in to loving the design because resistance is futile.
[Via
BotJunkie
] | 23 | 23 | [
{
"comment_id": "143560",
"author": "osgeld",
"timestamp": "2010-05-19T21:06:23",
"content": "spiffy",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "143564",
"author": "PacoBell",
"timestamp": "2010-05-19T21:10:39",
"content": "Interesting, but woul... | 1,760,377,442.752413 | ||
https://hackaday.com/2010/05/19/arduino-based-eatc-replacement/ | Arduino Based EATC Replacement | Mike Szczys | [
"Transportation Hacks"
] | [
"arduino",
"eatc",
"ford",
"mega",
"taurus"
] | The Electronic Automatic Temperature Control Module on [Dan Mattox’s] 2000 Ford Taurus bit the dust. The junkyards in the area didn’t have a matching replacement and a new one is pretty hard to come by so he
built an EATC replacement from an Arduino Mega
. It includes a solenoid controller board for the vent selector, blower control, and new switches to control the power windows. He’s got the system up and running which is important because after removing the broken EATC the car was stuck blowing 90-degree air at full blast. He’s put together a demo and an installation video which we’ve embedded after the break but there’s also
a photo album
you can page through. The sketch that we developed to control the system is
up at pastebin
so get it while it’s hot.
[youtube=http://www.youtube.com/watch?v=vSN7RHwAh10]
Demonstration
[youtube=http://www.youtube.com/watch?v=XnCa1U5Hudk]
Installation | 27 | 27 | [
{
"comment_id": "143527",
"author": "Justin",
"timestamp": "2010-05-19T20:09:36",
"content": "^^^It’s a Taurus, it will never look good.However, this is very cool. The art of fixing cars is lost on many people, including car mechanics it seems.",
"parent_id": null,
"depth": 1,
"replies":... | 1,760,377,442.201899 | ||
https://hackaday.com/2010/05/17/final-projects-wifi-coil-gun-turret/ | Final Projects: WiFi Coil Gun Turret | Caleb Kraft | [
"Misc Hacks"
] | [
"arduino",
"coil",
"gauss"
] | [youtube=http://www.youtube.com/watch?v=PU3QB3ScnGQ]
[Chris Farnell] and [Michael Helms] are the brains behind this scary looking piece of machinery. It is a
Coil gun, mounted on a turret, that is controlled over WiFi
. If that wasn’t scary enough, they have rigged it to their iphone/ipad for remote shooting. Though it looks bulky, you can see that it is surprisingly responsive in action. | 14 | 13 | [
{
"comment_id": "142979",
"author": "Gregg",
"timestamp": "2010-05-17T14:36:29",
"content": "Lol Mulit stage….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "142982",
"author": "grovenstien",
"timestamp": "2010-05-17T14:56:43",
"content": "Gotta lo... | 1,760,377,442.799667 | ||
https://hackaday.com/2010/05/16/lunkenheimer-steam-whistle-doorbell/ | Lunkenheimer Steam Whistle, Doorbell | Jakob Griffith | [
"home hacks"
] | [
"doorbell",
"hearing loss",
"lunkenheimer",
"relay",
"solenoid",
"steam",
"whistle",
"wireless"
] | We’re going to straight out agree with [Pete] on how surprisingly quiet doorbells are now a days, and if we had it our way we would put his
Lunkenheimer train whistle doorbell
in every home*. The setup he uses is surprisingly simple, opting for a pre-built wireless doorbell that signals a microcontroller which in turn drives a relay and solenoid. While he does include a video, we felt it didn’t quite show the
intensity
of these whistles.
*HaD is not responsible for hearing loss and subsequent melted brains. | 30 | 30 | [
{
"comment_id": "142795",
"author": "bogdanfirst",
"timestamp": "2010-05-16T20:35:17",
"content": "I really need one of these too.I have definitely missed the door few times and ended up being called on the phone.Great work, simple and effective…So what effect does it have on unsuspecting visitors? ... | 1,760,377,442.268234 | ||
https://hackaday.com/2010/05/15/kaossilator-on-the-cheap/ | Kaossilator On The Cheap | James Munns | [
"Arduino Hacks",
"digital audio hacks"
] | [
"arduino",
"kaoss",
"kaossilator",
"midi",
"Teensy"
] | We recently stumbled on a way to turn a regular laptop into a
poor man’s Kaossilator
. Using the touchpad of your laptop, some
PureData
software,
Touchpad2MIDI
and a couple custom patches, [zenpho] has set everyone up to create that crazy electronic music that kids listen to these days.
But what was that? You cant afford a whole laptop, and need to make this happen on an even tighter budget? Oh,
we’ve got your back
. Using just the trackpad and an Arduino, [Bastiaan] has created a basic PS2 to Arduino to USB link which can be parsed by your
favorite
language
of
choice
into a working MIDI interface. Good news for all the lazy hackers out there, he’s planning on swapping out the Arduino for a Teensy, and making a real USB to MIDI interface. | 23 | 23 | [
{
"comment_id": "142586",
"author": "Dick Gobbler",
"timestamp": "2010-05-15T23:53:29",
"content": "Second.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "142590",
"author": "Dick Trickle",
"timestamp": "2010-05-16T00:00:08",
"content": "——————————... | 1,760,377,442.493193 | ||
https://hackaday.com/2010/05/15/a-black-box-mystery/ | A Black Box Mystery | James Munns | [
"Ask Hackaday"
] | [
"black",
"box",
"garage",
"pic"
] | One of the members of the SomethingAwful forum recently found a
black project box
on the street (as seen above), with no idea what the thing did. After (hopefully) making sure there were no explosives, [noapparentfunction] posted a picture online to see if someone could figure it out. According to them, this is what the chips are labelled as:
Center black IC: MICREL Y22758C; 0417
Long white DIP switch IC: CTS 206-12; T438
Small black microcontroller on right: 12C508A; 04/P1V6; 0437. Has a tiny “M-inside circle” logo.
From our experience, we recognized the PIC on the board, but without some more photos, it makes this mystery a little more interesting.
Right now their best guess is a garage door opener of some kind because of the 12 DIP switch part. Any HAD readers willing to investigate and weigh in? The game is afoot!
[thanks to Dave D. who sent this in] | 171 | 50 | [
{
"comment_id": "142548",
"author": "The Moogle",
"timestamp": "2010-05-15T22:07:27",
"content": "it could be anything, what we need is a photo of the traces",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "142553",
"author": "magnavoid",
"timestamp": "2... | 1,760,377,442.646352 | ||
https://hackaday.com/2010/05/15/human-tetris-object-tracking-on-an-8-bit-microcontroller/ | Human Tetris: Object Tracking On An 8-bit Microcontroller | Phil Burgess | [
"classic hacks",
"hardware",
"Video Hacks"
] | [
"8 bit",
"atmega",
"atmega644",
"Atmel",
"AVR",
"cornell",
"digitize",
"overlay",
"tetris",
"tracking",
"video"
] | Elaborating on an item previously mentioned among last weekend’s
Cornell final projects
list, this time with video:
For their ECE final project, [Adam Papamarcos] and [Kerran Flanagan] implemented
a real-time video object tracking system centered around an ATmega644 8-bit microcontroller
. Their board ingests an NTSC video camera feed, samples frames at a coarse 39×60 pixel resolution (sufficient for simple games), processes the input to recognize objects and then drives a TV output using the OSD display chip from a video camera (this chip also recognizes the horizontal and vertical sync pulses from the input video signal, which the CPU uses to synchronize the digitizing step). Pretty amazing work all around.
Sometimes clever projects online are scant on information…but as this is their final grade, they’ve left no detail to speculation. Along with a great explanation of the system and its specific challenges, there’s complete source code, schematics, a parts list, the whole nine yards. Come on, guys! You’re making the rest of us look bad… Videos after the break…
[G’day Bruce]
Basic object tracking:
[youtube=http://www.youtube.com/watch?v=f8cdfxDv__Y]
Human Tetris:
[youtube=http://www.youtube.com/watch?v=uz-x-QW69co]
Brick Breaker:
[youtube=http://www.youtube.com/watch?v=xTw4dH2l7YE] | 13 | 12 | [
{
"comment_id": "142534",
"author": "blubb",
"timestamp": "2010-05-15T21:13:48",
"content": "absolutly well done.. one day i will rebuild their board.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "142539",
"author": "elektrophreak",
"timestamp": "2010... | 1,760,377,442.700585 | ||
https://hackaday.com/2010/05/15/hack-a-day%e2%80%99s-dictionary-of-questionable-utility%e2%84%a2/ | Hack A Day’s Dictionary Of Questionable Utility™ | Phil Burgess | [
"Misc Hacks"
] | [
"dictionary",
"humor",
"puns",
"terminology"
] | We frequently receive inquiries from eager readers asking how they can best get started in electronics and computer projects. Countless great books have been written on these subjects, and of course now there’s our
answers.hackaday.com
site. But there’s a difference between being “book smart” and being “street smart.” What are the terms that you
really
need to know to get ahead in this field? We’ve collected a few of our favorites here.
Have any terms or definitions to add? Leave a note in the comments!
Amp-hour:
n.
The short interval after the morning Starbucks has kicked in, during which one gets all their actual work done for the day.
Antimony:
n.
A chemical element frequently used in electronics. Explodes on contact with money.
Bandwidth:
n.
A measurement inversely proportional to the cumulative physical fitness of a musical ensemble.
Butterworth filter:
n.
A kitchen utensil for removing the crystalized bits from maple syrup.
Duty cycle:
n.
A washing machine setting thats particularly effective for getting skid marks out of underwear.
ELF binary:
n.
A program that mysteriously appears on your computer while you’re asleep.
Ferret chloride:
n.
A foul-smelling chemical solution used for etching printed circuit boards
really really quickly.
Flux:
n.
Expletive that usually follows soldering iron mishaps. See
Hertz.
Hertz:
v.
What a soldering iron does when you touch the wrong end. See
flux.
Hysteresis:
n.
The state of panic when one’s circuit does not work as planned.
N-type semiconductor:
n.
The “n-type” sticker adds 5 horsepower.
Negative feedback:
n.
Something one should attempt to minimize on eBay.
Noise:
n.
That so-called “music” you kids listen to these days. Get off my lawn!
Open source:
n.
Wounds that have not been properly cleaned and dressed.
Passive-aggressive component:
n.
A electronic part (e.g. resistor, capacitor, etc.) that suddenly decides to burn, stab or explode in your face.
PWMED!
v.
To have kicked someones ass with subtly-shaded LEDs.
Rectifier:
n.
A tool for lodging things into one’s backside. Two rectifiers back-to-back form a
butt connector.
Resistance:
n.
Futile. You will be assimilated.
RMS:
n.
A feature of better quality voltmeters; makes them into raving proponents of open-source software.
Square wave:
n.
A secret greeting used by nerds.
1ED:
n.
Acronym for 1337-emitting diode (pronounced
leet,
not one-three-three-seven). Any light (but almost
invariably a blue LED) on or within a computer that exists solely for posturing and conveys no diagnostic or status information. | 43 | 43 | [
{
"comment_id": "142520",
"author": "TheFish",
"timestamp": "2010-05-15T20:23:19",
"content": "Ohm: The amount of resistance someone gives you when you pwn them at something, and take there score.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "142521",
"au... | 1,760,377,442.879855 | ||
https://hackaday.com/2010/05/15/minimalist-avr-programmer-is-just-fab/ | Minimalist AVR Programmer Is Just Fab! | Phil Burgess | [
"classic hacks",
"hardware"
] | [
"arduino",
"Atmel",
"attiny",
"AVR",
"bootloader",
"bootstrap",
"fab",
"fabrication",
"firmware",
"pcb",
"smd"
] | Whether you’re burning a new bootloader to an Arduino board, or doing away with a bootloader to flash Atmel chips directly, an in-system programmer (ISP) is an indispensable tool for working with AVR microcontrollers. If cost has held you back, it’s no longer an excuse:
FabISP
is a barebones USB-based AVR programmer that can be pieced together for about ten bucks.
FabISP was created by [David Mellis] as a product of MIT’s
Fab Lab
program, which provides schools with access to design and manufacturing tools based around a core set of
fabrication
capabilities
, so labs around the world can share results. But the FabISP design is simple enough that you don’t need a whole fab lab. It’s a small, single-sided board with no
drilling
required; the parts are all
surface-mounted
, but not so fine-pitched as to require
reflow
soldering. Easy!
There’s still the bootstrap problem, of course: you need an
AVR programmer
to get the firmware onto the FabISP. This would be an excellent group project for a
hackerspace
, club or school: if one person can provide the initial
programmer
to flash several boards, each member could
etch
and
assemble
their own, have it programmed, then take these out into the world to help create more.
We must repeat!
[Thanks Juan] | 62 | 50 | [
{
"comment_id": "142498",
"author": "poiso",
"timestamp": "2010-05-15T19:22:49",
"content": "Richard Quit being a dick and appreciate something created so even people with low income (IE students) can afford it.this is an awesome project for people like me who are In college right now and can barely... | 1,760,377,442.969468 | ||
https://hackaday.com/2010/05/15/button-mapping-for-all/ | Button Mapping For All | Mike Szczys | [
"HackIt"
] | [
"buttom mapping",
"controller",
"modern warfare"
] | [youtube=http://www.youtube.com/watch?v=G–u63Gka_0]
[Tim] came across
a Kotaku story about a handicapped gamer
who’s starting an
Internet petition for button mapping features
in all games. First of all, watch this guy play Modern Warfare 2 with a stock control, he’s got some mad skills. We’d normally be looking for a hardware solution like this
PS3 Frankenstein controller
or a
controller emulator
to do the job. There’s also
the mix-and-match controller that Ben Heck sells
. But we’re inclined to agree that button mapping is a useful feature for everyone, especially if you’re in [Chuck Bittner’s] shoes. We still miss the console and macro capabilities of the original Quake… oh why didn’t that functionality make it into console gaming? | 36 | 36 | [
{
"comment_id": "142462",
"author": "nubie",
"timestamp": "2010-05-15T14:50:08",
"content": "I agree with this wholeheartedly.Since Playstation there has been a standard in place for game controls.The Xbox threw that standard out the window with games like Flatout.The bottom button is Gas (at least ... | 1,760,377,443.250975 | ||
https://hackaday.com/2010/05/14/using-ipad-sim-with-an-iphone/ | Using IPad SIM With An IPhone | Mike Szczys | [
"iphone hacks"
] | [
"apn",
"ipad",
"iphone",
"sim"
] | [Aaron Nelson] tipped us off about a simple hack to
use an iPad SIM with an iPhone
. You won’t be able to use the iPhone as a phone, but the relatively cheap $29.99 for unlimited Internet was his goal. He used an old plastic gift card to cut out an adapter for the iPad’s micro SIM so that it will fit into the iPhone’s SIM cradle as seen above. From there he used a web service via the WiFi connection to enter “Broadband” as a custom APN. | 27 | 27 | [
{
"comment_id": "142335",
"author": "Sariel",
"timestamp": "2010-05-14T18:06:47",
"content": "thats killer! but why did you buy the ipad? Hope you make something cool out of it, maybe a giant tv remote for your HTPC? lol",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comme... | 1,760,377,443.155197 | ||
https://hackaday.com/2010/05/14/cat-door-unlocks-via-facial-recognition/ | Cat Door Unlocks Via Facial Recognition | Mike Szczys | [
"home hacks"
] | [
"cat",
"door",
"image",
"recognition"
] | Faced with critters trying to get in and a cat that loved to show them her latest kill, the folks at Quantum Picture came up with a system that
unlocks the cat door based on image recognition
. As you can see above, it uses a camera to capture the profile of anything approaching the cat door. That image is compared to stored positive identification sets, making up a feline positive identification protocol. Don’t think this is necessary? In the writeup there’s a couple of images showing the outline of a skunk. Sounds like this system is a necessity.
We wonder if this lucky cat also has
an Internet enabled cat feeder
?
[Thanks Stephen] | 50 | 44 | [
{
"comment_id": "142308",
"author": "Brad Hein",
"timestamp": "2010-05-14T17:03:43",
"content": "This is AWESOME!Keeps out the skunks and squirrels!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "142314",
"author": "el_walto",
"timestamp": "2010-05-14T... | 1,760,377,443.091847 | ||
https://hackaday.com/2010/05/14/electromechanical-game-running-with-the-bulls/ | Electromechanical Game: Running With The Bulls | Caleb Kraft | [
"home entertainment hacks"
] | [
"bull",
"electromechanical",
"game"
] | [vime0 =http://vimeo.com/11700747]
We’ve been watching the progress of this build for a while on
Flickr
. It looks like they’ve finally completed the electromechanical game,
Running with the bulls
. Based off of the event by the same name, you have to keep your guy from being trampled by the bulls as the charge. The entire bull structure is pulled forward on a timing chain with a stepper motor with each bulls individual side to side movement being servo driven. It actually looks kind of fun. | 8 | 8 | [
{
"comment_id": "142297",
"author": "Bittencourt",
"timestamp": "2010-05-14T16:30:26",
"content": "Ops…I think there is something wrong with the embedded video",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "142303",
"author": "fartface",
"timestamp": "... | 1,760,377,443.854633 | ||
https://hackaday.com/2010/05/14/biopunk-watch-time-temperature-gaming/ | Biopunk Watch: Time, Temperature, Gaming | Mike Szczys | [
"clock hacks"
] | [
"arduino",
"breakout",
"glove",
"paint",
"temperature",
"watch"
] | [Matthew Garten] built this
watch based on an Arduino
. The face is a small color display which allows you to choose to show time in digital, binary, or analog formats. In keeping with the recent trend here on Hackaday he has a glove-based add-on that has temperature sensors in the fingers; for Firefighters or those with nerve damage to their fingers (we’re thinking
Darkman
). For entertainment in any situation he’s included a trackball and the ability to play breakout or draw in 16-bit color. Details are scarce but apparently he’ll be sharing more soon. For now, watch the video after the break and think of ways to shrink this down into a nice package like
the Pong Watch
enjoys.
[youtube=http://www.youtube.com/watch?v=KqO87pZWYuc] | 17 | 16 | [
{
"comment_id": "142265",
"author": "ktosiek",
"timestamp": "2010-05-14T14:32:32",
"content": "Whats with this *punk naming this days?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "142279",
"author": "osgeld",
"timestamp": "2010-05-14T15:46:06",
"... | 1,760,377,443.469444 | ||
https://hackaday.com/2010/05/13/wii-remote-connectivity-for-android-devices/ | Wii Remote Connectivity For Android Devices | Mike Szczys | [
"Android Hacks",
"Nintendo Wii Hacks"
] | [
"android",
"emulator",
"nexus one",
"remote",
"wii"
] | [Pikipirs] developed an app that lets you
connect a Wii remote to an Android phone
. After the break you can see it used with a Sega emulator. The button presses seem very responsive, making for a nice gaming addition if you care to carry around the Wiimote in addition to your phone. It certainly seems to work better than
the Wii remote + iPhone hacks
we’ve seen. Pick it up from the Android store or download the APK from the thread linked at the top. This is an alpha version so don’t be shocked if it’s buggy.
Thanks [Shmike] via
xda-developers | 42 | 41 | [
{
"comment_id": "142106",
"author": "osgeld",
"timestamp": "2010-05-13T19:30:02",
"content": "you know why they dont make these commercially?cause its dumb",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "1466268",
"author": "fennimore",
"times... | 1,760,377,443.638943 | ||
https://hackaday.com/2010/05/13/opengl-on-the-didj/ | OpenGL On The Didj | Mike Szczys | [
"handhelds hacks"
] | [
"Didj",
"glquake",
"opengl",
"quake"
] | [youtube=http://www.youtube.com/watch?v=nfXI0crLTBc]
[Losinggeneration] managed to get a
homebrew OpenGL application working on the Didj
. It’s nice to see the community driven work advance on this device but something else also caught our attention from
the forum post
. Another poster pointed out that [losinggeneration] has files in one of his directories called “glquake-didj” and “glquake-didj.dbg”. We hope that means a working version of Quake is on the way for
the hackable handheld
.
[Thanks JJ Dasher] | 13 | 13 | [
{
"comment_id": "142094",
"author": "sethj",
"timestamp": "2010-05-13T18:40:55",
"content": "YEAH!!!that thing will be running nintendo roms in no time!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "142102",
"author": "0xDEADBEEF",
"timestamp": "2010-... | 1,760,377,443.900329 | ||
https://hackaday.com/2010/05/13/transistor-fabrication-so-simple-a-child-can-do-it/ | Transistor Fabrication: So Simple A Child Can Do It | Mike Szczys | [
"classic hacks"
] | [
"fet",
"jeri ellsworth",
"silicone",
"transistor",
"wafer"
] | If manufacturing printed circuit boards has become too easy you should try your hand at producing transistors. [Jeri Ellsworth] put together a collection of
videos outlining the process
. These go way beyond the
IC fabrication
we saw from her in the past. It doesn’t take much, a 1000 degree oven with steam option, silicone wafers, and a variety of chemicals. We’ve embedded the instructional video as well as two demonstrations of her N-style FET after the break.
[youtube=http://www.youtube.com/watch?v=w_znRopGtbE]
[youtube=http://www.youtube.com/watch?v=rYAk7rIaQb8]
[youtube=http://www.youtube.com/watch?v=-Qph8BNrnLY] | 60 | 50 | [
{
"comment_id": "142076",
"author": "walt",
"timestamp": "2010-05-13T17:16:51",
"content": "grrrr curse you @Tachikoma2nd :( (&3rd)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "142079",
"author": "Jeri Ellsworth",
"timestamp": "2010-05-13T17:38:54",... | 1,760,377,443.816723 | ||
https://hackaday.com/2010/05/13/nike-ipod-as-a-tracking-device/ | Nike + IPod As A Tracking Device | Mike Szczys | [
"ipod hacks",
"Security Hacks"
] | [
"apple",
"gumstix",
"ipod",
"nike",
"nike+ipod",
"tracking"
] | [Thomas] found a paper from 2006 that describes
using the Nike + iPod system as inexpensive tracking devices
. Yep, it’s old as dirt but we think it’s fascinating reading! [Scott Saponas] and his fellow authors take a hard look at the lack of security in the system in
a twelve-page PDF
. They cover several different ways to capture and track one of the $29 tags in someone’s shoe, including using the
Gumstix
reader above, or a slightly modified 3G iPod. If the sensors are not removed or manually switched off when not in use they can be picked up by any RF reader within range. Because the tags are cheap and available, one could be planted on an unsuspecting victim James-Bond-style. Maybe this is what prompted
Apple’s half-hearted attempt to restrict hacking
the devices to do things like
unlock doors
.
Of course if you don’t want to do the reading you could
download their video
presentation or
just stream it
. | 5 | 5 | [
{
"comment_id": "142078",
"author": "sc0rch3d",
"timestamp": "2010-05-13T17:31:36",
"content": "I use mine at least 4 times a week for marathon training. My last resort to getting off the grid was Apple’s way of keeping me permanently on the grid. :(",
"parent_id": null,
"depth": 1,
"re... | 1,760,377,443.412231 | ||
https://hackaday.com/2010/05/13/ghetto-repairs-desoldering-with-a-candle/ | Ghetto Repairs: Desoldering With A Candle | Caleb Kraft | [
"Tool Hacks"
] | [
"candle",
"ghetto"
] | Yes, that picture you are seeing is serious. [Roland] needed a chip for a damaged piece of electronics. He was lucky enough to find one on an old board at a local shop. The problem was, he didn’t have the hot air gun to remove the chip the correct way. Instead, he simply
cooked the board over a candle
to melt the solder. Interestingly, after he cleaned the candle-cooked board, it looked like it survived without damage. The chip worked fine and fixed his problems. Sometimes,
we just don’t have the right tools
for the job.
[via
HackedGadgets
] | 66 | 50 | [
{
"comment_id": "142007",
"author": "darkore",
"timestamp": "2010-05-13T14:01:23",
"content": "This isn’t anything more than lucky. Definitely not something I’d recommend to anyone.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "142008",
"author": "medix",... | 1,760,377,443.729648 | ||
https://hackaday.com/2010/05/12/point-and-shoot-in-a-classic-camera-body/ | Point And Shoot In A Classic Camera Body | Mike Szczys | [
"digital cameras hacks"
] | [
"camera",
"dsc-wx1",
"leica",
"zorki"
] | If you think there’s a gun inside that camera you’ve been fooled. We just like the juxtaposition of the 1940’s era camera with the iconic sidearms. What you see is
a point-and-shoot cameras inside of the classic Leica II body
(this is actually a
Zorki 1 knockoff
). It is much like the
Canon AE-1
hack but this time there’s plenty of build details.
Digital camera makers try to get the smallest form factor possible and consequently the inside of those things is a nightmare of tiny parts and intricate connections.The Sony DSC-WX1 is no exception, and even the battery is disassembled to fit inside. See the final product and its features in the video after the break.
[youtube=http://www.youtube.com/watch?v=UJDtmcWiaVM]
[Thanks Dennis] | 39 | 38 | [
{
"comment_id": "141854",
"author": "juancubillo",
"timestamp": "2010-05-12T20:32:48",
"content": "I though we had all agreed this type of posts are not for this site :S",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "141855",
"author": "osgeld",
"times... | 1,760,377,444.032155 | ||
https://hackaday.com/2010/05/12/midi-gloves/ | Midi Gloves | Mike Szczys | [
"digital audio hacks",
"Peripherals Hacks"
] | [
"garage band",
"glove",
"matlab",
"midi",
"piezo"
] | We’re being inundated with glove-based peripheral hacks. This is another final project from Cornell, keyboard out of the equation by
adding 8 piezo sensors to a pair of gloves
thereby shunning the
pinky
finger. We like this one because it’s easy to build and the midi interface implementation is well documented if you want to build your own.
As you can see after the break, this is easy to use with music software like Garage Band because it is a standard MIDI device. In addition, a MATLAB interface allows for custom mapping in case you want to change what each finger does.
We remember our first introduction to glove-based performances with
Tod Machover’s Bug Mudra
many years ago. We hope
the music input hacks
we’re seeing will lead to a whole new generation of music innovators.
[youtube=http://www.youtube.com/v/Sm7x0YokZaQ] | 15 | 15 | [
{
"comment_id": "141811",
"author": "Xeracy",
"timestamp": "2010-05-12T18:14:43",
"content": "“adding 8 piezo sensors to a pair of gloves” Link broken.FIRST!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "141821",
"author": "nate",
"timestamp": "2010-0... | 1,760,377,443.954727 | ||
https://hackaday.com/2010/05/12/monitor-uv-exposure-with-your-sunglasses/ | Monitor UV Exposure With Your Sunglasses | Mike Szczys | [
"Wearable Hacks"
] | [
"lilypad",
"radiation",
"sun glasses",
"TSL230R",
"uv"
] | Tired of those awful sunburns? [Nikko Knappe’s]
UV sensing glasses
will warn you before you become crisp and red as a lobster. The bump added to the bridge support hides a TSL230R light frequency sensor. The device automatically switches on when the arms are unfolded and starts tracking cumulative exposure. If it detects a rising UV level, or you are about to burn based on skin type, an LED inside one arm of the frames will flash to inform you.
This has some potential if you think
David Brin’s Earth
outlines how climate change is really going to play out. Either way it’s still fun and we give bonus points to [Nikko] for disguising the lilypad that controls this as a flowery hair-pin. | 20 | 20 | [
{
"comment_id": "141800",
"author": "blodgar",
"timestamp": "2010-05-12T17:52:21",
"content": "Yay! Go Ra-Boys!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "141828",
"author": "Abbott",
"timestamp": "2010-05-12T19:05:44",
"content": "Wow… interes... | 1,760,377,444.087343 | ||
https://hackaday.com/2010/05/12/building-air-variable-capacitors/ | Building Air Variable Capacitors | Mike Szczys | [
"Radio Hacks",
"Tool Hacks"
] | [
"capacitors",
"radio"
] | In keeping with our opinion that radio operators were the original electronic hackers here’s a guide to
building your own transmitting air variable capacitors
. Using some roof flashing, Plexiglas, and various fasteners [
David Hammack] was able to make it work. It’s not a perfect solution but he has some ideas to make the next one better. Give this a try after you’re done
tweaking your crystals
and
building input devices
.
[Thanks Rich] | 14 | 14 | [
{
"comment_id": "141766",
"author": "lurker",
"timestamp": "2010-05-12T16:22:51",
"content": "Old but good – Couple hints though… Using a parallel plate capacitor calculator, you can easily build one with the number and size of plates you need for any capacitive range. Second, don’t use roof flash... | 1,760,377,444.136557 | ||
https://hackaday.com/2010/05/07/toner-transfer-explained-step-by-step/ | Toner Transfer Explained Step-by-step | Mike Szczys | [
"Misc Hacks"
] | [
"copper chloride",
"etch",
"pcb",
"toner transfer"
] | [Tanjent] send us a link to his
tutorial on the toner transfer process
for fabricating circuit boards. We’ve seen a lot of these in the past, but we liked how his is straight to the point while also sharing several tips and options along the way. Notably, he ”tints” the copper clad before trying to adhere the toner to it by swabbing on a bit of etchant. His reasoning for this is that the toner has more trouble sticking to the shiny copper. Just a bit of etchant will pit the surface and let the toner stick better.
He’s still using paper as a medium and not
printing toner powder directly to the copper clad
. His paper of choice is HP Brochure Paper while we use glossy pages from the union newspaper. But like us, he does use copper chloride as an etchant, which you can
learn to make yourself
. We’re still looking for a definitive solution for disposing of this chemical. We’ve been using the same batch for years and recently it’s turned cloudy with impurities. If you’ve got disposal tips let’s hear them in the comments section. | 33 | 32 | [
{
"comment_id": "140769",
"author": "Brennan",
"timestamp": "2010-05-07T19:17:47",
"content": "I said it before and I’ll say it again – With a little bit of prep, the UV light exposure method is more accurate and can be done in about the same amount of time if not a few minutes more. The only downsi... | 1,760,377,444.277525 | ||
https://hackaday.com/2010/05/07/hand-made-manipulator-arm/ | Hand Made Manipulator Arm | Mike Szczys | [
"Robots Hacks"
] | [
"arm",
"encoder",
"magnetic",
"servo",
"styrene"
] | We’re pretty used to seeing CAD used in the design process for most things. It’s a bit of a shocker to come across a project this involve, and this well executed, that didn’t use CAD.
[Anton] spent 100 hours
building this manipulator arm by hand
. He made the parts by drawing them on styrene and cutting them out with scissors. He has started building version two with AutoCAD but from what we’ve seen in the video after the break, improvements on the original design will be minor. The speed and fluidity of the servos with added magnetic encoders makes for a graceful robotic dance; we’d love to be its
chess partner
.
[youtube=http://www.youtube.com/watch?v=1qpc4G3NQhk] | 32 | 31 | [
{
"comment_id": "140720",
"author": "software free",
"timestamp": "2010-05-07T15:29:42",
"content": "great modification",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "140731",
"author": "biqut2",
"timestamp": "2010-05-07T16:13:43",
"content": "inte... | 1,760,377,444.209508 | ||
https://hackaday.com/2010/05/07/peltier-cooler-based-cloud-chamber/ | Peltier Cooler Based Cloud Chamber | Caleb Kraft | [
"Tool Hacks"
] | [
"cloud",
"peltier",
"radioactive"
] | [youtube=http://www.youtube.com/watch?v=eKfx4Rjf0BU&feature=player_embedded]
[Rich] shares with us his build of a
Peltier cooler based cloud chamber
. This nifty little tool allows him to see the paths that radioactive particles take through alcohol vapor. The system he has come up with is fairly cheap at roughly $100. He’s using Peltier coolers from computers and a cheap ATX power supply. You can see a more detailed
instructable
here.
[via
Make
] | 22 | 22 | [
{
"comment_id": "140706",
"author": "medix",
"timestamp": "2010-05-07T14:06:50",
"content": "Very cool. I’d like to see a few other ‘lightly’ radioactive things tested, like thoriated tungsten and lantern mantles.Good video as well. Short and to the point (right to the results!). No mumbling about ‘... | 1,760,377,444.798477 | ||
https://hackaday.com/2010/05/06/dslr-shoulder-holster-with-follow-focus/ | DSLR Shoulder Holster With Follow Focus | Mike Szczys | [
"digital cameras hacks"
] | [
"dslr",
"holster",
"mount",
"rig",
"wood",
"woodworker"
] | [vimeo=http://vimeo.com/11435910]
[Erik] and [Jonathan Bergqvist] built this
shoulder mount for a Canon 7D camera
. It’s made from wood and it hooks over the top of the photographer’s shoulder with a handle for each hand. The left handle also controls the focus, using a similar method to the
hardware store follow focus
we looked at in January. Like it or not, you’ll love watching a master woodworker build this starting with un-milled logs. It’s all about having and knowing how to use the right tools.
[Thanks Juan] | 26 | 26 | [
{
"comment_id": "140570",
"author": "Frogz",
"timestamp": "2010-05-06T19:17:40",
"content": "stupid comment time…..RUN AWAY!! HE HAS A RPG ON HIS SHOULDER!!!(see youtube video of cameraman being shot from helicopter if you dont get the comment)props for using raw materials instead of buying lumber t... | 1,760,377,444.975144 | ||
https://hackaday.com/2010/05/06/building-removable-epoxy-mounting-brackets/ | Building Removable Epoxy Mounting Brackets | Mike Szczys | [
"digital cameras hacks"
] | [
"bracket",
"epoxy",
"kodak",
"Sugru",
"zi8"
] | [Jykazu] wanted to use an external lens with his Kodak Zi8 but he didn’t want to alter the camera or glue something onto it. His solution was to
build a bracket out of epoxy dough
. He first covers the camera in scotch tape to protect the finish, then he kneads the dough to mix the two parts together, using it to form the bracket that you can see above. After curing, the bracket barely sticks to the smooth tape and can be gently removed. A lens cap with a hole drilled in it is glued to this bracket and works like a charm for connecting the lens. Check out his manufacturing method in the videos after the break.
This is a great method for many applications. Last year
we saw a product called Sugru
which seems to be made for this type of thing but [Jykazu’s] epoxy method is just as impressive.
[youtube=http://www.youtube.com/watch?v=Mx1F8X_z4l0]
[youtube=http://www.youtube.com/watch?v=vXzbHgLLyTw]
[Thanks Chee] | 16 | 16 | [
{
"comment_id": "140564",
"author": "Frogz",
"timestamp": "2010-05-06T18:42:24",
"content": "another person doing something stupidly simple that anyone could have thought of yet no one did(or atleast posted, im sure many of us have used putty epoxy in construction of things before)plumbing epoxy is ... | 1,760,377,444.486961 | ||
https://hackaday.com/2010/05/06/pc-side-im-me-hacks/ | PC Side IM-ME Hacks | Mike Szczys | [
"Wireless Hacks"
] | [
"im-me",
"keyboard",
"prompt",
"winamp"
] | [Paul Klemstine] is working on some PC-side
software hacks for the IM-ME
. We’ve seen a lot of hardware hacks for this device, such as
controlling the display
,
firmware flashing
, and using it as
a spectrum analyzer
, but if you don’t want to alter the device right away you can try [Paul’s] collection of hacks. Working with the code developed by [Ben Ryves] there is support for using the IM-ME as a command prompt, to control Win amp, and as a wireless keyboard. Crack out your C# skills and develop the next feature for this inexpensive device. | 11 | 11 | [
{
"comment_id": "140555",
"author": "CodeAsm",
"timestamp": "2010-05-06T17:38:58",
"content": "Nice work !Stupid color, but I got one anyway. one can always repaint it and use it for remote controlling something. want to control my Xbox xbmc.– first post –",
"parent_id": null,
"depth": 1,
... | 1,760,377,444.530198 | ||
https://hackaday.com/2010/05/06/build-your-own-wikipedia-reader/ | Build Your Own Wikipedia Reader | Mike Szczys | [
"classic hacks",
"handhelds hacks"
] | [
"arm cortex",
"lpc1117",
"m0",
"wikipedia"
] | One part inexpensive uC, one part touch-screen, one part Internet knowledge-base all come together to make up
this Wikipedia reader
. It functions in a very similar way to
commercial versions
by parsing XML dumps from the popular website to an SD card for use on the device. This is not limited to Wikipedia, but could just as easily be an e-reader. [Rossum] developed the package using an NXP ARM Cortex M0 model LCP1114 microcontroller. They cost just a couple of bucks but pack a 50 MHz punch with 32 KB of program memory and 8 KB of SRAM. If the
nanotouch
and the
A
VR iPhone concept
didn’t convince you that [Rossum] knows what he’s doing, the video after the break of this newest creation will seal the deal.
[youtube=http://www.youtube.com/watch?v=tUmCOaxk6oY] | 26 | 26 | [
{
"comment_id": "140531",
"author": "shazzner",
"timestamp": "2010-05-06T15:37:27",
"content": "That’s pretty slick!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "140532",
"author": "CJ",
"timestamp": "2010-05-06T15:43:12",
"content": "AWESOME! It... | 1,760,377,444.745103 | ||
https://hackaday.com/2010/05/12/nerf-sentry-gun-build-in-progress/ | Nerf Sentry Gun Build In Progress | Caleb Kraft | [
"Toy Hacks"
] | [
"arduino",
"nerf",
"sentry"
] | [John Park] is documenting his build of a Nerf Sentry gun. So far, he’s
rigged the trigger
and set up the
motorized base
. He’s documenting the process in fantastic detail with great photos along the way. If you want to see what it will be like when it is finished, check out these other
Nerf sentry guns
that we’ve
featured in the past
. | 9 | 9 | [
{
"comment_id": "141760",
"author": "Ho0d0o/Heatgap",
"timestamp": "2010-05-12T15:58:01",
"content": "Cool idea. Something to do when bored I guess, other than that no real use for it.Would have been cool to have as a kid for “Nerf-Wars”.My favorite Nerf weapon was the old school bow and arrow Nerf ... | 1,760,377,444.847181 | ||
https://hackaday.com/2010/05/11/digikey-sort-by-price-script/ | Digikey Sort By Price Script | Jakob Griffith | [
"News"
] | [
"chrome",
"digikey",
"firefox",
"google",
"greasemonkey",
"mouser",
"script",
"sparkfun"
] | Does anyone else find it a little ironic the electronic retailer SparkFun is
advocating scripts to help Digikey
have a Sort By Price function? Regardless, to
reiterate
now
Firefox
(and we hear
Google Chrome
too) users with the
Greasemonkey
plugin can sort
Digikey
items. Personally, some of us here are just
Mouser
fans at heart.
[Thanks Charper and Mohonri and Satiagraha, image credit Make] | 38 | 38 | [
{
"comment_id": "141597",
"author": "Nate",
"timestamp": "2010-05-12T00:07:13",
"content": "Completely agree on Mouser. Shouldn’t have to use 3rd party scripts to get basic functionality out of a website. That being said, Digikey (and Mouser) don’t really cater to much to the hobbyist. They are l... | 1,760,377,444.919448 | ||
https://hackaday.com/2010/05/11/maze-solving/ | Maze Solving | Mike Szczys | [
"home entertainment hacks"
] | [
"8051",
"maze",
"ping pong",
"servo"
] | [youtube=http://www.youtube.com/watch?v=63Txt5rLSWU]
[Mitchel Humpherys] and his fellow developers didn’t just develop a maze-solving algorithm, they also
built a ping-pong ball maze platform that is computer controlled
. Using a webcam the computer picks up the high-contrast maze by peering down from above, calculates the solution, and moves the ping-pong ball to the goal using two different tilt servos controlled by an 8051 microcontroller. But wait, there’s more! Why have the computer solve it when you can
make a game out of a maze
? Once the PC was thrown into the mix it was pretty easy to add Wii remote and Wii balance board control too. See these alternative inputs in action after the break.
[youtube=http://www.youtube.com/watch?v=zcAkLosSyl4]
[youtube=http://www.youtube.com/watch?v=m7DsKwUwllU] | 7 | 7 | [
{
"comment_id": "141573",
"author": "sam",
"timestamp": "2010-05-11T21:05:04",
"content": "Honestly they could have done a little better on the board movement with some better servos and a more refined movement approach since ball-and-plate mechanisms aren’t hard to find information on. But props to... | 1,760,377,445.089876 | ||
https://hackaday.com/2010/05/11/ps3-patch-allows-linux-installation/ | PS3 Patch Allows Linux Installation | Mike Szczys | [
"Playstation Hacks",
"Rants"
] | [
"geohot",
"linux",
"otheros",
"sony"
] | [Geohot] came up with
a patch that allows OtherOS on 3.21 PS3 firmware
. You’ll remember that
Sony released version 3.21 specifically to prohibit OtherOS
which allows the installation of Linux for which
they were subsequently sued
. Well, now their “fix” doesn’t work on people willing to flash patched firmware which means they’re only punishing those who play by the rules. Ugh.
Wondering why this is a big deal? Check out this article on
the effect Sony’s move has on PS3 clusters used for supercomputing
; something we hadn’t even thought of initially.
It turns out that this patch was released more than a month ago. Sorry for the late coverage but it’s new to us. You can see the obligatory proof video of the patched OtherOS after the break.
[youtube=http://www.youtube.com/watch?v=1-9wLWQ4-uA]
[Thanks Wdfowty] | 37 | 37 | [
{
"comment_id": "141527",
"author": "fr4nk",
"timestamp": "2010-05-11T17:23:36",
"content": "Old news, yes.However, the patch has not been released, AFAIK.It’s not in the usual places if it is beyond the hands of geohot.Please correct me if I’m wrong…",
"parent_id": null,
"depth": 1,
"re... | 1,760,377,445.049759 | ||
https://hackaday.com/2010/05/11/original-nes-plays-game-boy-games/ | Original NES Plays Game Boy Games? | Mike Szczys | [
"classic hacks",
"Nintendo Game Boy Hacks",
"Nintendo Hacks"
] | [
"cartridge",
"game boy",
"nes"
] | [Bunnyboy] pulled off some wizardry with this
custom NES cartridge
. Inside is the mainboard for a Game Boy as well as his own custom PCB with the comb connector needed to interface with an original Nintendo Entertainment System. In his own words it’s “a Super Game Boy without the Super”. The expansion port to for the handheld is still accessible for some head-to-head Tetris or use with the obscure Game Boy printer.
[Thanks Maxym] | 26 | 26 | [
{
"comment_id": "141500",
"author": "Gert",
"timestamp": "2010-05-11T15:20:00",
"content": "Nice work. I’m still looking for a NES clone, (live in Belgium) there are hard to find and not very cheap.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "141506",
"... | 1,760,377,445.151982 | ||
https://hackaday.com/2010/05/11/open3dp-looks-at-3d-printing-in-common-materials/ | Open3DP Looks At 3D Printing In Common Materials | Mike Szczys | [
"Misc Hacks"
] | [
"3d printing",
"ceramic",
"glass",
"kiln",
"sugar"
] | [Buddy Smith] sent us
a link to Open3DP
which he calls “REAL 3d printing hacks”. Open3DP showcases the projects of the Solheim Rapid Prototyping Laboratory at the University of Washington. They’re working on 3D printing in materials that can be commonly acquired and to that end
they publish recipes for powder printing
in materials such as sugar, ceramic, and glass. Take a look through their archives. We found the post on
microwave kilns
interesting, as well as
the writeup about Shapeways glass printing
which is seen above. We’ve also embedded a short video on Open3DP’s work after the break.
Update:
[
Mark Ganter
] dropped us a line to clarify that Open3DP was the first to develop printable glass about a year ago, called Vitraglyphic. They’ll also be presenting papers at
Rapid2010
and announcing a new printable material.
[youtube=http://www.youtube.com/watch?v=g3Arud2MBhQ] | 11 | 10 | [
{
"comment_id": "141492",
"author": "Devin M",
"timestamp": "2010-05-11T14:36:10",
"content": "I hope that some day rapid proto tech will be cheap and freely avalable. Intresting article though.-Devin",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "141495",
... | 1,760,377,445.198573 | ||
https://hackaday.com/2010/05/10/hack-your-crystals-frequency/ | Hack Your Crystal’s Frequency | Devlin Thyne | [
"Misc Hacks",
"Wireless Hacks"
] | [
"crystal",
"oscillate",
"penning",
"xtal"
] | [Drone] tipped us off about [Joachim]’s efforts to
alter a crystal’s frequency
. Through a process called penning, a crystal’s resonant frequency is lowered by painting the crystal with an indelible ink marker. Our curiosity piqued, we went off and found
more information about penning crystals
. It turns out this technique has been around for nearly as long as there have been amateur radio operators. Outside of your local oscillator, and
radio jammer
, how might you best use a hacked crystal? | 53 | 46 | [
{
"comment_id": "141366",
"author": "MattA",
"timestamp": "2010-05-10T20:26:36",
"content": "Well, if you decide to acquire cheap surplus commercial or military equipment that may be “near” your desired band of operation… You may pen your crystals to get the desired frequency. One such application ... | 1,760,377,446.998917 | ||
https://hackaday.com/2010/05/09/manual-transmission-gear%c2%a0sensor/ | Manual Transmission Gear sensor | Mike Szczys | [
"Transportation Hacks"
] | [
"infrared",
"ir",
"manual transmission",
"neutral",
"remote start"
] | [Ben] bought a remote starter for his car but needed a way to make sure the manual transmission was in neutral when starting. He built this
infrared sensor frame to detect the position of the stick
. It uses four beam paths which will tell him the exact gear or neutral position of the shifter. For this project he just needs to detect neutral but exact gearing is apparently necessary information for his next hacking project. We initially were worried about sunlight interfering with the sensor readings but he’s building this to go under the collar that is used to cover up the mechanical joint at the base of the stick. | 57 | 50 | [
{
"comment_id": "141074",
"author": "Colin",
"timestamp": "2010-05-09T17:04:55",
"content": "Wow, I wanted to purchase something like this for my own car! If you can make them this easily then my projects might come along after all!",
"parent_id": null,
"depth": 1,
"replies": []
},
... | 1,760,377,447.086969 | ||
https://hackaday.com/2010/05/08/nimbus-portable-n64/ | Nimbus, Portable N64 | Jakob Griffith | [
"handhelds hacks",
"Nintendo Hacks"
] | [
"n64",
"nimbus",
"nintendo",
"portable",
"superpad",
"vacuum plastic",
"zenith"
] | We love a beautiful and successful
N64 portable mod
, (In case that fact wasn’t
already obvious
). And today we would like to add [cndowning’s] Nimbus N64 to our list of favorites.
The base is made from vacuum formed plastic while the buttons come from a modified superpad and the screen is a Zenith 5inch. We couldn’t find word on battery life or weight, but for those that like a hunt, or have other questions, the
build logs
are available
. Follow the jump for a video of the Nimbus in action.
[Thanks Fernando, and GaryC for our silly typo]
[youtube
http://www.youtube.com/watch?v=m9emq44qrbk&feature=player_embedded%5D | 21 | 21 | [
{
"comment_id": "140955",
"author": "GaryC",
"timestamp": "2010-05-08T19:20:23",
"content": "Vacuum sealed what’s that? lol.Nice portable though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "140964",
"author": "Saragon",
"timestamp": "2010-05-08T20:2... | 1,760,377,446.86944 | ||
https://hackaday.com/2010/05/08/xkcd-takes-a-swipe-at-the-arduino/ | XKCD Takes A Swipe At The Arduino | Caleb Kraft | [
"Arduino Hacks",
"News"
] | [
"arduino",
"categories",
"xkcd"
] | This
XKCD comic
takes a playful swipe and almost everything, including the Arduino. We’ve heard people claim that we have some sort of favoritism toward Arduino, and we don’t. People just submit a LOT of projects with them. But there is one point that we’ve seen a few times that should be addressed. In our categories we have an “Arduino hacks” section. That will not be going away, again, because we get so many submitted. However, shouldn’t we also add some categories for other stuff? Should there be a “pic hacks” category, or maybe just “microcontroller hacks” category?
Let’s not making this an Arduino bashing thread. Instead, give us some good ideas on other categories you would like to see for sorting.
[via
littlebirdceo
] | 97 | 50 | [
{
"comment_id": "140920",
"author": "zigzagjoe",
"timestamp": "2010-05-08T16:14:13",
"content": "Really?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "140921",
"author": "blubb",
"timestamp": "2010-05-08T16:18:10",
"content": "I think a pic sectio... | 1,760,377,447.382714 | ||
https://hackaday.com/2010/05/08/making-magnetite-nanocrystals/ | Making Magnetite Nanocrystals | Caleb Kraft | [
"chemistry hacks"
] | [
"Chemistry",
"nano"
] | Unlike many chemistry projects we post here,
making magnetite nanocrystals
doesn’t require anything that can’t be found in a local grocery store. All that is required is oil, vinegar, crystal drain opener, and rust. We don’t recognize the specific brand of drain cleaner that they are using, but we’re sure that you could find one with the same ingredients. Magnetite nanocrystals are used to remove arsenic from water. If you are in the USA or most of Europe, that’s not a big concern, but it can’t hurt can it?
[via
Make
] | 11 | 11 | [
{
"comment_id": "140910",
"author": "mrgoogfan",
"timestamp": "2010-05-08T15:07:05",
"content": "Ferrofluid ftw.I have tried this method before though, and your ff wont last too long.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "140912",
"author": "Insip... | 1,760,377,447.235497 | ||
https://hackaday.com/2010/05/08/cornell-final-project-list/ | Cornell Final Project List | Jakob Griffith | [
"Misc Hacks"
] | [
"Atmel",
"cornell",
"finals",
"mega644",
"project",
"projects",
"university"
] | Looking for an interesting project to do using an Atmel Mega644?
Students at Cornell University
have got you covered. They were required to choose, design, and build a project using the microcontroller; and this year is quite promising with
video object tracking
, the always popular
theremins
,
helicopters
,
Potentiostats
, even
Pavlovian conditioned mosquitoes
, and more.
Of course all the previous years are included as well, making over 350 projects total.
[Thanks Bruce Land] | 6 | 6 | [
{
"comment_id": "140909",
"author": "M4CGYV3R",
"timestamp": "2010-05-08T15:03:52",
"content": "It seems like Cornell is teaching only AVR programming. That’s a little sad to see since there are so many other excellent products out there.I love the Pavlovian Mosquitoes. I would love to be able to si... | 1,760,377,447.42368 | ||
https://hackaday.com/2010/05/07/5x2-patch-board/ | 5×2 Patch Board | Mike Szczys | [
"Tool Hacks"
] | [
"breadboard",
"breakout",
"idc",
"pin header",
"pin socket"
] | Sometimes we want to sit on the back porch, crack a beer, and do some prototyping. Other times we’d like to do the same but on the couch in the livingroom. To that end we added a 5×2 pin to 10×1 pin patch board to our solderless breadboard.
The 5×2 pin form factor is pretty common, used as an AVR programming header, on development boards like the Dragon Rider 500 and the STK 500, and in small prototyping devices like the Bus Pirate. We like the freedom of using IDC cables as interconnects and that’s where this board comes in. Now we can patch into the IDC cables yet still quickly disconnect them when moving to a different prototyping location. Check out the PCB artwork and this handy device in use after the break.
Above is an image of the
DS3232 breakout board
we made a while back.
We have probe cables
that we could use to connect directly to the pins on the breakout board but as you can see, we need a smoothing capacitor and three pullup resistors in this circuit so we’re using a breadboard. In the past we’ve connected jumper wires directly to one end of an IDC cable but it’s difficult to ensure you’re made the proper connection and the wires frequently come loose. With our new breakout board attached to the breadboard, solid connects can be made to the 10×1 pin sockets while preserving portability with the 5×2 pin header.
If you want to make you’re own, the PCB artwork is below. We used 6-32 machine screws, nylon spacers, washers, lock washers, and nuts to firmly affix the PCB to holes we drilled in the base of the breadboard. Good luck and let us know how you like this addition. | 16 | 16 | [
{
"comment_id": "140801",
"author": "Erik",
"timestamp": "2010-05-07T21:08:15",
"content": "I just plug a 5×2 header right into the protoboard, problem solved.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "140802",
"author": "Hitek146",
"timestamp": "... | 1,760,377,447.477042 | ||
https://hackaday.com/2010/05/07/reuse-that-pda-as-a-wrt-terminal/ | Reuse That PDA As A WRT Terminal | Mike Szczys | [
"Peripherals Hacks"
] | [
"iiic",
"openwrt",
"palm",
"serial",
"terminal"
] | [Michu] used his old
Palm IIIc to make a serial interface
for his OpenWRT router. It’s a matter of cracking open both the router and the Palm device, then connecting the TTL lines from the router to the MAX 3386e level converter chip inside the Palm. From there, Pocketterm can connect to the router’s serial terminal.
A lot of us have old electronics lying around
that work perfectly well. It’s nice to find hacks that make them useful again.
[Thanks Isama] | 21 | 21 | [
{
"comment_id": "140785",
"author": "osgeld",
"timestamp": "2010-05-07T20:22:14",
"content": "Hm, If I would have though this was HAD worthy I would have submitted long ago, I use my plam VII as a serial terminal for whatever I can plug into it",
"parent_id": null,
"depth": 1,
"replies":... | 1,760,377,447.291594 | ||
https://hackaday.com/2010/05/10/color-a-sound/ | Color A Sound | Mike Szczys | [
"digital audio hacks"
] | [
"maxmsp",
"overhead",
"projector",
"synthesizer",
"transparency"
] | [vimeo=http://vimeo.com/11606420]
This is an interesting take on a music box. [Blair Neal] is using an overhead projector with a roll of transparency to make
a synthesized music box
. A camera watches the projected image and feeds data to Max/MSP to produce the sounds. Customization merely requires creative image analysis. In this case, different colored pens or different tracks can be assigned to a sound with the speed of the track based on how fast you wind the transparency spool. | 8 | 8 | [
{
"comment_id": "141356",
"author": "Bittencourt",
"timestamp": "2010-05-10T19:14:12",
"content": "Very cool! it wold be nice to advance to something more “gestural” (I mean, more fluid drawings)and eventually make the inverse to “print” a music on a new way",
"parent_id": null,
"depth": 1,
... | 1,760,377,447.515044 | ||
https://hackaday.com/2010/05/10/more-glove-based-interfaces/ | More Glove-based Interfaces | Mike Szczys | [
"Peripherals Hacks"
] | [
"flex sensor",
"glove",
"rc",
"robot",
"sign language",
"vex"
] | You may remember seeing
the golf glove air guitar hack
last month. Here’s two more uses for gloves with sensors on them.
On the left is a glove interface with flex sensors on each digit as well as an accelerometer. The VEX module reads the sensors to
detect sign language as a command set
. A shake of the hand is picked up by an accelerometer to delineate between different command sets. See it controlling a little robot after the break. This comes from [Amnon Demri] who was also involved in
the EMG prosthesis
.
Straight out of Cornell we have
the SudoGlove
, seen on the right. [Jeremy Blum] and his fellow engineering students bring together a mess of different sensors, sourcing an Arduino and a XBee module to control a small RC car with added lights and a siren. There’s embedded video after the break. You may want to jump past the music video for the description that starts at about 3:52.
[youtube=http://www.youtube.com/watch?v=QovWGP7sXQI]
Sign language glove interface
[youtube=http://www.youtube.com/watch?v=RnWPoaLU1i4]
SudoGlove interface | 7 | 6 | [
{
"comment_id": "141358",
"author": "Bojan",
"timestamp": "2010-05-10T19:17:00",
"content": "Hi,I’m a phd student @ University of Bologna (Italy).Our Group developed a glove-based wireless interface 2 years ago, equipped with an ATmega8, accelerometer, bend sensors for the fingers and a bluetooth co... | 1,760,377,446.912052 | ||
https://hackaday.com/2010/05/10/fps-controller-hacks-getting-easier/ | FPS Controller Hacks Getting Easier | Mike Szczys | [
"Peripherals Hacks"
] | [
"cube",
"fps",
"motion plus",
"wii",
"zapper"
] | It used to be a major production to build a gun-form-factor FPS controller but commercial tech has adopted many of those traditional hacks over the years. Now, [Nirav Patel] is
playing Cube with a Wii zapper and a SpacePoint
. All that was really required to make this happen is a patch to
Cube
, the open source FPS.
[Nirav] has plans to make this controller wireless using a BeagleBoard. We’re wondering if there’s support for using the Wii motion plus? We’ve seen
motion plus Arduino connectivity
, as well as
direct PC connectivity
. The Wii remote
already connects to Linux
, what about pulling that data down from the Bluetooth connection? If you’ve done this,
send us a tip
about it. | 12 | 12 | [
{
"comment_id": "141337",
"author": "M4CGYV3R",
"timestamp": "2010-05-10T17:44:56",
"content": "This would be really cool if the pico projectors had more brightness and less cost.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "141345",
"author": "Doktor Je... | 1,760,377,447.5665 | ||
https://hackaday.com/2010/05/10/toby-reel-mower-bot-evolved/ | TOBY: Reel Mower Bot evolved | Mike Szczys | [
"home hacks"
] | [
"motor",
"mower",
"rc",
"reel"
] | [Grayson Sigler] rolled out
a new version of his robotic mower
which he calls TOBY.
The previous design
added motors to a reel mower but he had trouble with traction. The new design is more of a utility robot platform that is used to tow the reel motor behind it. With better wheels, a much more stable base, and plenty of power this is a significant improvement.
His parts order came since we last checked in and he now has RC fully implemented. Check out the video after the break.
[youtube=http://www.youtube.com/watch?v=Bu5uRE6PLm8]] | 13 | 13 | [
{
"comment_id": "141326",
"author": "CF",
"timestamp": "2010-05-10T16:28:24",
"content": "Name is kind of racist.http://en.wikipedia.org/wiki/Tobythird paragraph! Sorry couldnt help it LOVE THE WORK though!!!!!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "14... | 1,760,377,447.803225 | ||
https://hackaday.com/2010/05/10/making-a-bluetooth-snes-controller/ | Making A Bluetooth SNES Controller | Caleb Kraft | [
"classic hacks",
"Nintendo Hacks",
"Peripherals Hacks"
] | [
"bluetooth",
"nes",
"snes"
] | [youtube=http://www.youtube.com/watch?v=OP8JgqmVES8&]
[MODDEDbyBACTERIA] has posted this instructible on
how to make a bluetooth SNES controller
. The bulk of the parts come from a bluetooth MSI game pad, so this isn’t a scratch build, but the amount of modifications required definitely qualify this as a hack. We were quite surprised that he managed to stuff all of that back into the case as well as he did. Great job. | 10 | 10 | [
{
"comment_id": "141315",
"author": "Ryan Leach",
"timestamp": "2010-05-10T15:08:09",
"content": ":( there goes one more snes controller.good job on getting it to fit tho, just a pity you didn’t do it to a offbrand snes controller.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
... | 1,760,377,448.028605 | ||
https://hackaday.com/2010/05/09/twilio-adds-touch-tone-telephone-control-for-arduino/ | Twilio Adds Touch Tone Telephone Control For Arduino | Mike Szczys | [
"Arduino Hacks"
] | [
"arduino",
"phone",
"touch tone",
"twilio"
] | An Arduino with an Ethernet shield, nothing new right? Not quite, [Chris] is showing us
how to use Twilio to control an Arduino
via a touch tone telephone. We saw
Twilio used before in a cellphone
video game but this time around an audio menu system comes into play. You can make your own menus whose options will be read by
the WOPR
(see the demo after the break) when you call the Twilio number. This application just turns an LED on and off but once you’ve got access to the Arduino the sky’s the limit. Most immediately this is an easy implementation for all those
cellphone door lock systems
we’ve seen. We also envision some classic home automation such as feed the cats or turn on the lights.
[http://www.youtube.com/watch?v=RYu_e4P3Y-4] | 17 | 16 | [
{
"comment_id": "141110",
"author": "okay",
"timestamp": "2010-05-09T19:14:35",
"content": "Okay, who is gonna sample the beginning DTMF tones to figure out the phone number and freak him out when the led start going on and off without him knowing :p",
"parent_id": null,
"depth": 1,
"rep... | 1,760,377,447.87722 | ||
https://hackaday.com/2010/05/09/multiple-material-3d-printing/ | Multiple Material 3D Printing | Mike Szczys | [
"HackIt"
] | [
"3d",
"abs",
"ployjet",
"polypropylene",
"printer"
] | [youtube=http://www.youtube.com/watch?v=D4Yq3glEyec]
It’s no surprise that we’re wild about 3D printing,
especially [Devlin]
. Now we’re absolutely out of our minds for this multi-material polyjet machine that is
featured in the video
above. Before we go any further it’s worth mentioning that this post is not advertising, we just think this machine is unbelievable.
It is capable of printing 600 dpi in 3D using multiple materials at the same. Two types of rigid material, one like ABS and the other like polypropylene, as well as seven levels of a soft material all exist on the same print head. They can be deposited along with a support material at the same time. In the video you can see enclosures that come out of the printer with rubber-like padding already mounted in the hard plastic shell. They even show a bicycle chain that is fully assembled after printing. Cost for these machines? We don’t want to know, it’s just fun to dream about having unrestricted access to one.
[Thanks Karl via
PDDnet
] | 60 | 50 | [
{
"comment_id": "141094",
"author": "mrgoogfan",
"timestamp": "2010-05-09T18:13:57",
"content": "That. Is. Epic.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "141095",
"author": "darkstar",
"timestamp": "2010-05-09T18:16:08",
"content": "damn, loo... | 1,760,377,447.987973 | ||
https://hackaday.com/2010/05/05/vehicle-information-display-hacks/ | Vehicle Information Display Hacks | Mike Szczys | [
"Transportation Hacks"
] | [
"16f877",
"ATmega88",
"AVR",
"battery",
"electric car",
"formula 1",
"pic",
"rpm"
] | We’ve had a few folks send us info about their vehicle display hacks after seeing [Will O’Brien’s]
motorcycle computer
a few days ago.
On the left we have
a display for an electric vehicle
. [S1axter] is using a 4.3″ TFT screen to display charge information for each battery cell in the car. An ATmega88 collects the data and sends it to a breakout board with an LCD controller on it.
To the right is a display from
a Formula Student project
. a Matrix Orbital GLK19264-7T-1U LCD display provides a lot of real estate for displaying data. Right now [Alan] is still in the early prototyping stages, but the video after the break demonstrates the RPM readout using a function generator. It’s not shown in the video, but he tells us that he’s since tried it out with the engine and has a PIC 16f877 reading temperate data from the electronic control transmission sensors in addition to the RPM data.
Correction:
Thanks to [j] for correcting our mistake. This is
a Formula Student car
.
[youtube=http://www.youtube.com/watch?v=3qPhJTQl5aI] | 20 | 20 | [
{
"comment_id": "140379",
"author": "Michael V",
"timestamp": "2010-05-05T20:37:05",
"content": "Great stuff, especially as follow up to the post the other day about the motorcycle hack. The first one seems rather sophisticated, the second one seems extremely useful. PS: FP.",
"parent_id": null... | 1,760,377,448.159384 | ||
https://hackaday.com/2010/05/05/mad-machinist-masterpieces/ | Mad Machinist Masterpieces | Jakob Griffith | [
"Misc Hacks"
] | [
"airsoft",
"alpine tpg-1",
"alumium",
"build",
"gun",
"model",
"monster truck",
"robot"
] | If a picture is worth 1000 words, by our count, [
Ryan Commbes
] has said 1.68×10^6 different things about his custom
robot
, airsoft, and
monster truck
builds. While we’re not ones to pick favorites, we agreed his
Alpine TPG-1
(picture at the top) build is a step above the rest. Sadly,
the forums
with his build log doesn’t seem to be loading, but he says the basic process if you wanted to make your own is to gather pictures, measure, and create.
[Thanks Andrew] | 39 | 39 | [
{
"comment_id": "140353",
"author": "Hirudinea",
"timestamp": "2010-05-05T19:31:03",
"content": "Beautiful work, since he lives in the UK if it works his ass is going to jail.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "140355",
"author": "ClutchDude",
... | 1,760,377,448.103757 | ||
https://hackaday.com/2010/05/05/classic-canon-ae-1-gets-a-digital-upgrade/ | Classic Canon AE-1 Gets A Digital Upgrade | Mike Szczys | [
"digital cameras hacks"
] | [
"ae-1",
"canon",
"digital",
"powershot"
] | Shots of this
Canon AE-1 camera-gone-digital
have a lot of people scratching their heads. Originally there were a lot of “that’s been photoshopped” cries but the video after the break shows that it physically exists. This
particular model of camera
hasn’t been manufactured since 1984 so there’s little chance that the company’s bringing it back in a digital format. What we have here is a classic camera body with a modern point-and-shoot fit inside. This seems to be a PowerShot SD 870 IS and we’d guess the original lens has been replaced with a plate of glass so as not to affect the PowerShot’s focus, and the “AE-1 Program Digital” screen is probably just an image on the memory card.
We admire the clean mod work necessary to produce this hack.
[youtube=http://www.youtube.com/watch?v=WrsRQIxyOzw&feature=player_embedded]
[Thanks Juan] | 33 | 33 | [
{
"comment_id": "140333",
"author": "hpux735",
"timestamp": "2010-05-05T18:06:46",
"content": "Awww…. this makes me sad. I loved my AE-1 until it was stolen! It was the best film camera I ever had. Kicked the crap out of the EOS Rebel it replaced.",
"parent_id": null,
"depth": 1,
"rep... | 1,760,377,448.366648 | ||
https://hackaday.com/2010/05/05/custom-ps3-controller-software-emulation-version/ | Custom PS3 Controller: Software Emulation Version | Mike Szczys | [
"Playstation Hacks"
] | [
"emulator",
"linux",
"playstation 3",
"six-axis"
] | [Matlo] posted a tutorial that will walk you through
setting up a six-axis controller emulator
. In April he developed
a hardware solution using the Teensy
but this version just needs a Linux computer with a Bluetooth adapter. If you don’t mind adding a computer to the mix you can use any peripheral controller that will talk to Linux and then adjust the six-axis PS3 controller mapping accordingly. | 21 | 21 | [
{
"comment_id": "140343",
"author": "spook",
"timestamp": "2010-05-05T18:47:29",
"content": "2.4 ghz yagi + PS3 emulation via linux over BT + PS3 controller macros = interesting potential for abuseguess you still have to register the controller w/ the target, but it should be fairly straight-forward... | 1,760,377,448.421175 | ||
https://hackaday.com/2010/05/05/adding-ram-to-the-nexus-one-without-soldering/ | Adding RAM To The Nexus One Without Soldering | Mike Szczys | [
"Android Hacks",
"Cellphone Hacks"
] | [
"android",
"google",
"kernel",
"nexus one",
"ram"
] | Want
21 megabytes more ram in your Nexus One
? [Coolbho3000] worked out a way to tweak the kernel and remap memory usage to free up some resources. That means this comes as a custom kernel image requiring no hardware alteration. Try it out and share your experiences in the comments. But if you don’t need more ram you can just
upgrade to the most recent kernel
.
[Thanks Juan] | 19 | 19 | [
{
"comment_id": "140313",
"author": "Little_Neo",
"timestamp": "2010-05-05T16:47:37",
"content": "I really need to get a Nexus One now.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "140325",
"author": "fartface",
"timestamp": "2010-05-05T17:18:36",
... | 1,760,377,448.216358 | ||
https://hackaday.com/2010/05/05/possibly-the-most-beautiful-piece-of-hardware/ | Possibly The Most Beautiful Piece Of Hardware | Caleb Kraft | [
"Rants"
] | [
"mercury",
"rectifier"
] | [youtube=http://www.youtube.com/watch?v=lNAKL9qtnIA]
I’m going to break from the typical Hackaday article format for a moment. I’m smitten, captivated by this wondrous new discovery. Forgive my ignorance for having never seen one of these before, I didn’t go to school for electronics. For those, who like myself wondered, what is this beautiful glowing thing, it is a
mercury arc valve rectifier
.
This is not some chintzy attempt at neo victorian styling (steampunk if you absolutely must), this is an actual piece of electronics used in the field. Widely used to convert alternating current to direct current for railways and street cars, these could actually be found in the wild. There was a time, that opening a door in a power station would have presented you with this fantastic green and purple glowing orb, dripping mercury sparkling inside. If you are anything like me, you would most likely have been frozen in your tracks, convinced you were bearing witness magic.
[via
Make
] | 63 | 50 | [
{
"comment_id": "140284",
"author": "Aaron",
"timestamp": "2010-05-05T15:17:01",
"content": "Gorgeous.And thank you for taking a swipe at the steampunk kiddies. When they learn that “pretty but nonfunctional” doesn’t count, they’ll start being taken seriously.",
"parent_id": null,
"depth": 1... | 1,760,377,448.508333 | ||
https://hackaday.com/2010/05/05/when-multimeters-go-boom/ | When Multimeters Go Boom | Caleb Kraft | [
"classic hacks",
"Teardown"
] | [
"boom",
"capacitor"
] | [youtube=http://www.youtube.com/watch?v=M-FZP1U2dkM]
Ever wondered how expensive versus cheap multimeters hold up to abuse? [Dave] gives us a pretty good idea by, well,
blowing them up
. He’s using a capacitor bank to put roughly 4.2 KiloVolts into the poor little meters. If you absolutely must skip to the multimeters, go to about 5:00. You really will miss out on some good stuff though.
[via H
ackedGadgets
] | 35 | 34 | [
{
"comment_id": "140275",
"author": "greenyooper",
"timestamp": "2010-05-05T14:44:33",
"content": "xx was a great though :)",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "140280",
"author": "Caleb Kraft",
"timestamp": "2010-05-05T14:56:19",
... | 1,760,377,448.620021 | ||
https://hackaday.com/2010/05/05/remote-operated-underwater-vehicle/ | Remote Operated Underwater Vehicle | Jakob Griffith | [
"Robots Hacks"
] | [
"arduino",
"bilge pump",
"fiber optic",
"leak detector",
"paintball",
"PVC",
"rov",
"sla",
"underwater",
"water"
] | PVC hull, SLA batteries, Bilge Pumps, sounds like a good start to [Jimmy’s]
ROV project
. Paintball gun (as a BCD), dual live cameras paired with an Arduino making it internet controlled, all tethered with a fiber optic cable, sounds like [Jimmy’s] ROV got a whole lot more astounding.
While some very important parts have yet to be implemented, like the leak detectors, the project looks to be going quite smoothly. With updates promised, we can’t wait to watch this continue until the end.
Related:
Yellow Sub
s and
double
ROV
s | 10 | 10 | [
{
"comment_id": "140266",
"author": "Hip",
"timestamp": "2010-05-05T13:31:42",
"content": "Why SLA batteries?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "140267",
"author": "blue carbuncle",
"timestamp": "2010-05-05T13:40:56",
"content": "My dad... | 1,760,377,448.554396 | ||
https://hackaday.com/2010/05/04/answers-hackaday-com-is-live/ | Answers.hackaday.com Is LIVE | Caleb Kraft | [
"Ask Hackaday"
] | [
"answers",
"features"
] | Quick, go to
answers.hackaday.com
and sign up for an account. Ages ago,
we announced
that we would be bringing a community driven question and answer system to Hackaday. We eventually got tired of waiting for the feature to be provided and
improvised
. Well, the wait is over. You can now post your own questions and answers. Go nuts, post away, but remember to be respectful. We’re still figuring out this system ourselves, so be patient with us as well.
Be warned, we’re going to be pretty strict on trolling.
It is worth noting that there is a money system integrated into it. This means that you can offer a real reward for answers to your questions. You certainly don’t have to though. | 24 | 21 | [
{
"comment_id": "140134",
"author": "Drakonite",
"timestamp": "2010-05-04T21:00:51",
"content": "Is this because I submitted an askHAD last night?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "140145",
"author": "KayDat",
"timestamp": "2010-05-04T21:3... | 1,760,377,448.742139 | ||
https://hackaday.com/2010/05/04/paintball-graffitti/ | Paintball Graffitti | Mike Szczys | [
"cnc hacks"
] | [
"facade",
"graffitti",
"paintball",
"printer"
] | Paintball as a large format printer? That’s exactly what
facade printer
is. A paintball gun was mounted with two controllable axes of movement. A computer reads in the image data and prints it out by shooting paintballs to form a dot-matrix display. There’s a couple of wins here, the paintball paint can be washed off, and this will work on coarse or uneven display medium. Check out a video of the printing process after the break.
If you already
built your own paintball turret
, give the other guys and chance and hack it to print instead of gunning down unsuspecting adversaries.
[vimeo=http://vimeo.com/7299485]
[Thanks Jollygreengiant] | 26 | 26 | [
{
"comment_id": "140104",
"author": "Colecoman1982",
"timestamp": "2010-05-04T19:10:40",
"content": "On the building next to the one depicted at the top of the summary, he should draw a portrait of Thomas Hobbes.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "... | 1,760,377,448.682749 | ||
https://hackaday.com/2010/05/04/laser-command-game-uses-laser-for-control/ | Laser Command Game Uses Laser For Control | Mike Szczys | [
"Laser Hacks"
] | [
"8x8",
"arduino",
"laser",
"led",
"matrix"
] | [vimeo=http://vimeo.com/10819322]
[Eliji Hayashi’s]
project for a class at Carnegie Mellon
University is absolutely delightful! It is a game he calls Laser Command because a laser pointer is used as the gaming controller. An 8×8 LED matrix serves as the display, but is also used as an 8×8 light sensor, much the same way as
the LED advent project
did. The display is rapidly switched between producing light and sensing it. The laser is bright enough that it becomes easy to pick up the voltage generated within the matrix during the sensing periods. The game is programmed on an Arduino mini and the whole thing wraps up into an incredibly small package. Brilliant.
[Thanks Juan] | 31 | 30 | [
{
"comment_id": "140087",
"author": "lefty",
"timestamp": "2010-05-04T18:33:52",
"content": "pre-emptive…yep its an arduino, get over yourselves",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "140094",
"author": "Alex",
"timestamp": "2010-05-04T18:51:01... | 1,760,377,449.027589 | ||
https://hackaday.com/2010/05/04/print-toner-directly-to-a-pcb/ | Print Toner Directly To A PCB | Mike Szczys | [
"classic hacks"
] | [
"copper clad",
"laminator",
"laser printer",
"pcb",
"toner transfer"
] | We use the toner transfer method to fabricate printed circuit boards. The most difficult part of this is printing, ironing, and removing the paper from the toner that is used as an etchant resist material. [Mark Lerman] is developing a method to
apply toner directly to the copper clad using a laser printer
. Each of the photos in his gallery have comments that take us through his process. A laser printer has been modified to negatively charge the copper plate, thereby attracting the positively charged toner to it. Once the toner has been applied, the board is baked in an oven, then run through a laminator. This process can yield 2 mil traces and it looks like the potential for incredibly clean boards is just around the corner. The question is, will this be easier and take less time than using photo resist?
We’ve contacted [Mark] in hopes of getting more details. If you can’t wait for a follow-up,
take a look at this thread
concerning his work.
[Thanks Komradbob] | 33 | 31 | [
{
"comment_id": "140072",
"author": "pascal",
"timestamp": "2010-05-04T17:22:02",
"content": "Has anybody tried using a cutting plotter (like Silhouette) to cut spaces into the copper?My idea was to just cut into the copper, etch shortly to make the spaces broader & deeper, then as for printing appl... | 1,760,377,448.81187 | ||
https://hackaday.com/2010/05/04/qfn-or-mlf-soldering-without-solder-paste/ | QFN Or MLF Soldering Without Solder Paste | Caleb Kraft | [
"how-to",
"Tool Hacks"
] | [
"mlf",
"paste",
"qfn",
"smd",
"solder"
] | [youtube=http://www.youtube.com/v/c_Qt5CtUlqY&hl=en_US&fs=1&]
Take a few minutes to watch this amazingly informative video on
how to solder QFN or MLF components without solder paste
. The quality of the video and the information within is quite nice. Even if you don’t intend to work with these parts, you could pick up some tips for soldering with hot air. | 22 | 20 | [
{
"comment_id": "140041",
"author": "Scott",
"timestamp": "2010-05-04T15:33:12",
"content": "This was a very good guide. Using the coffee warmer is an idea which never occurred to me. Thanks for posting this.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "1400... | 1,760,377,449.487864 | ||
https://hackaday.com/2010/05/04/emg-controlled-prosthesis/ | EMG Controlled Prosthesis | Mike Szczys | [
"Medical Hacks"
] | [
"18f677a",
"electromyography",
"emg",
"pic",
"prosthetic"
] | This
prosthetic arm
is the result of a student project. [Amnon Demri] and his classmates built it with below-the-elbow amputees in mind. It uses
electromyography
to actuate the fingers and wrist. Four stick-on sensors are placed around the elbow to sense electrical activity there. These signals are interpreted by a PIC 16f877a microcontroller which then controls the servo motors to operate the prosthetic limb. This sounds like a very economical solution and as you can see in the videos after the break, it works fairly well. | 7 | 7 | [
{
"comment_id": "140040",
"author": "Amnon",
"timestamp": "2010-05-04T15:31:51",
"content": "For more info about this project please look at :http://translate.google.com/translate?js=y&prev=_t&hl=en&ie=UTF-8&layout=1&eotf=1&u=http%3A%2F%2Fwww.robotica.co.il%2Fforums%2Fviewtopic.php%3Fp%3D16579%2316... | 1,760,377,448.96528 | ||
https://hackaday.com/2010/05/02/a-more-powerful-boost-charger/ | A More Powerful Boost Charger | Mike Szczys | [
"classic hacks"
] | [
"boost converter",
"charger",
"minty boost"
] | [Meseta] built
a powerful boost charger
to top off his portable devices. He was inspired by the
Minty Boost
but wanted to overcome the rather limited capacity provided by the two-celled product. He ended up building his own DC to DC boost circuit rather than using an all-in-one IC. As you can see, the result uses four 18650 lithium-ion cells, normally found in laptop batteries, and can power two USB devices at the same time. | 28 | 28 | [
{
"comment_id": "139637",
"author": "strider_mt2k",
"timestamp": "2010-05-02T22:42:42",
"content": "Love love love power-related projects.This is not only effective, but they even found a cool enclosure!Really nice!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id"... | 1,760,377,449.10372 | ||
https://hackaday.com/2010/05/02/diy-pulse-oximeter/ | DIY Pulse Oximeter | Mike Szczys | [
"Medical Hacks"
] | [
"blood",
"freescale",
"pulse oximeter"
] | This
pulse oximeter
turned out very nicely. It is based around a Freescale microcontroller and detects pulse as well as oxygen saturation in your blood. The sensor is made of two wood pieces and allows two wavelengths of light to be shined through your finger. A sensor picks up the light on the other side of your stubby digit and the readings are compared to calculate saturation. Check out the finished project after the break.
We saw
an Arduino-based oximeter
a few months ago. These kind biometric hacks are rare around here. If you’ve got a
well documented
project don’t forget to
tell us about it
.
[Thanks Michael] | 28 | 25 | [
{
"comment_id": "139626",
"author": "Stephen",
"timestamp": "2010-05-02T21:50:13",
"content": "Sounds like a hypochondriac modders wet dream.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "2776866",
"author": "Rob",
"timestamp": "2015-10-29T1... | 1,760,377,449.162408 | ||
https://hackaday.com/2010/05/02/motion-sensing-light-module/ | Motion Sensing Light Module | Mike Szczys | [
"home hacks"
] | [
"ir",
"lights",
"motion sensor",
"rc5"
] | [Muris] is pumping out the home lighting hacks. He developed
this motion sensing module
as an add-on to the
IR switch we saw last week
. There’s some kind of fuse box above his entry door and its white cover, which you see above, is where he mounted an IR distance sensor to detect movement and switch on the lights. The RC5 infrared protocol is used to transmit the necessary signal to turn the lights on, then when a set amount of time has passed it will turn them back off again. | 5 | 5 | [
{
"comment_id": "139617",
"author": "first",
"timestamp": "2010-05-02T20:31:35",
"content": "That’s a lot of LEDs",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "139618",
"author": "mrgoogfan",
"timestamp": "2010-05-02T20:40:36",
"content": "I wonde... | 1,760,377,449.203593 | ||
https://hackaday.com/2010/05/01/custom-headphones-solve-wire-tangles/ | Custom Headphones Solve Wire Tangles | Jakob Griffith | [
"Peripherals Hacks"
] | [
"ear",
"ear-buds",
"headphones",
"protection",
"speakers"
] | One complaint we hear about often is ear-bud’s cables getting tangled within backpacks. [Andrew]
was having
this “spaghetti” wire problem, and also wanted to listen to his music with ear protection on – where ear-buds are usually uncomfortable. The latter problem is fixed by placing speakers inside of folding ear protectors, and the cable is managed with a 3.5mm disconnect.
For those who can’t make disconnect-able headphones but still suffer from tangled headphone wire, we recommend
proper wrapping technique
for your wire, and a
small carrying pouch
. With the combination of the two, we’ve never had a tangled cable. | 27 | 27 | [
{
"comment_id": "139450",
"author": "who dat",
"timestamp": "2010-05-01T21:12:23",
"content": "i am pretty sure there are multiple products on the market for the exact same thing- evlex makes something as well as other hearing- protecting mfgs. they even make ones with radios- so nothing impressive... | 1,760,377,449.265885 | ||
https://hackaday.com/2010/05/01/phasor-av-pal-demo-uses-atmega88/ | Phasor A/V PAL Demo Uses ATmega88 | Mike Szczys | [
"classic hacks"
] | [
"ATmega88",
"AVR",
"composite",
"pal",
"phasor"
] | [youtube=http://www.youtube.com/watch?v=sCN1bqRG-7o]
Above is a new demo video called Phasor developed by [Lft]. It is run from an AVR ATmega88 and a few passive components, and the result is pretty amazing. [Lft]
goes into detail about the tricks
he used to get this up and running. The chip is clocked at 17.73447 MHz which is exactly four times the frequency of the PAL color carrier wave which allows him to fake a smooth signal. He also uses a timer trick to get the voltages that he needs. The work done here is beyond hardcore and quite frankly we can’t believe he managed to fit all of this into 8.5 KB of program space with just 1 KB or RAM. We wonder if there’s enough room there to add sound and color to
the AVR Tetris project
.
[Thanks Sprite_tm] | 51 | 50 | [
{
"comment_id": "139438",
"author": "Scott",
"timestamp": "2010-05-01T20:32:34",
"content": "I like the old craft better! I think it was probably because of the superior music.http://www.youtube.com/watch?v=sNCqrylNY-0",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment... | 1,760,377,449.644764 | ||
https://hackaday.com/2010/05/01/dpac-put-your-alarm-clock-to-shame/ | DPAC Put Your Alarm Clock To Shame | Mike Szczys | [
"classic hacks",
"clock hacks"
] | [
"atmega324",
"clock",
"rn-134",
"wifly"
] | DPAC,
the Dynamically Programmable Alarm Clock
, goes far beyond what you would expect an alarm clock to do, yet we find all of its features useful. You can see there are four buttons at the bottom that control the menu scrolling. The second from the left currently reads “Sync”, a feature that the clock uses every 10 minutes but can be forced manually. This will check your Google Calendar, schedule an alarm for the next event while factoring in driving distance, traffic, and weather conditions. It’s got an audio system for radio and iPod operation, but also includes some home automation options. Using the X10 communication protocol it can turn on lights, start the coffee maker, and open the blinds as part of a gentle wake-up cycle. All of this is configurable through the clock itself, or via the web interface. The prototyping was done on an Arduino but the final version uses an AVR ATmega324 along with a Roving Networks RN-134 WiFi module (
datasheet
) for connectivity. Check out the demonstration video that [Eric Gaertner] and his fellow developers filmed after the break.
[youtube=http://www.youtube.com/watch?v=tvsD_Tb4c0Q] | 16 | 16 | [
{
"comment_id": "139421",
"author": "MS3FGX",
"timestamp": "2010-05-01T18:27:24",
"content": "Well…I don’t even know what to say about this one. Just incredible.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "139425",
"author": "jsngrimm",
"timestamp":... | 1,760,377,449.433615 | ||
https://hackaday.com/2010/05/01/cpu-as-a-heat-sink/ | CPU As A Heat Sink | Mike Szczys | [
"Wireless Hacks"
] | [
"cpu",
"heat sink",
"openwrt",
"router"
] | We’ve noticed that wireless routers pump out a bunch of heat. [Jernej Kranjec]
wanted to make sure that he didn’t fry it
once he started adding more load to his router using OpenWRT. What he came up with is the idea of using an old CPU as a passive heat sink. He applied a bit of thermal paste to the center and some super glue to the corners. You can see the finished product is an old AMD chip adhered “dead bug” style to the stock processor. We’d bet it’s not very efficient compared to an aluminum or copper heat sink, but it normally would have no help in shedding those extra degrees. | 51 | 50 | [
{
"comment_id": "139397",
"author": "????",
"timestamp": "2010-05-01T17:10:31",
"content": "how is this a hack? discuss.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "139398",
"author": "Life2Death",
"timestamp": "2010-05-01T17:12:33",
"content": ... | 1,760,377,449.570849 | ||
https://hackaday.com/2010/05/04/pov-led-sphere/ | POV LED Sphere | Caleb Kraft | [
"LED Hacks"
] | [
"led",
"POV"
] | [youtube=http://www.youtube.com/watch?v=VF2dI7RiMVQ]
[Csaba Bleuer] has built this really nice
POV LED sphere
. Looking at the hand drawn schematic, it appears that he’s using an Atmega8 as the core. The resolution is pretty decent, and even shows fairly well on camera despite the refresh issues. Although much cleaner, it looks like a similar implementation to
this one
that we covered back in october of last year. He’s still got some polishing to do to match “
the orb
” though. | 11 | 11 | [
{
"comment_id": "140028",
"author": "spyder_21",
"timestamp": "2010-05-04T14:30:00",
"content": "Nice job, but needs to spin faster.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "140029",
"author": "Brennan",
"timestamp": "2010-05-04T14:33:27",
"c... | 1,760,377,449.686754 | ||
https://hackaday.com/2010/05/03/iphone-3-1-3-unteathered-jailbreak/ | IPhone 3.1.3 Unteathered Jailbreak | Mike Szczys | [
"iphone hacks",
"ipod hacks"
] | [
"3.1.3",
"jailbreak",
"spirit",
"Tether"
] | A method to
Jailbreak the new 3.1.3 iPhone rom
is here and it does away with tethering. Tethering is the problem that arose from the blackra1n exploit requiring a computer to reboot the iPhone. Although we saw
a hardware workaround
for that, it’s much nicer to do away with the issue completely. The new exploit is called Spirit and we found the site was getting hammered earlier so you should check out
the writeup over at Redmond Pie
if you can’t get through with the link at the top.
[Thanks Xb0xGuru via
iPhone Hacks
] | 39 | 37 | [
{
"comment_id": "139883",
"author": "kirov",
"timestamp": "2010-05-03T22:59:14",
"content": "why does apple bother trying to prevent their phones from being jailbroken if they know it is just going to be a couple of weeks before somebody circumvents whatever new restriction they have placed onto it.... | 1,760,377,449.898644 | ||
https://hackaday.com/2010/05/03/automated-chicken-coop-door/ | Automated Chicken Coop Door | Caleb Kraft | [
"Arduino Hacks",
"home hacks"
] | [
"chicken",
"coop"
] | [youtube=http://www.youtube.com/watch?v=qUKIlZIZDqc]
Here’s a pretty cool implementation of an
automated door, built for a chicken coop
. The electronics are fairly standard, an Arduino and a used cordless drill. The end product will be not only wireless, but automated based off of ambient light as well. We also found the locking mechanism quite elegant. He also supplied a link to
another automated chicken coop door
which has a decent writeup with schematics and such. Next, he’ll have to
automate their feeding
as well.
[Thanks Jeri] | 42 | 39 | [
{
"comment_id": "139840",
"author": "mrgoogfan",
"timestamp": "2010-05-03T20:46:20",
"content": "a drill?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "139841",
"author": "hunternet93",
"timestamp": "2010-05-03T20:51:04",
"content": "A drill makes... | 1,760,377,450.031104 | ||
https://hackaday.com/2010/05/03/virtualbox-beta-runs-mac-os-x/ | VirtualBox Beta Runs Mac OS X | Phil Burgess | [
"Mac Hacks"
] | [
"mac",
"macintosh",
"os x",
"OsX",
"virtualbox",
"virtualization"
] | A new beta build
of
VirtualBox
,
Sun’s
Oracle’s
free
x86 virtualization software, makes it possible to run Mac OS X as a guest operating system…no shenanigans or flaming hoops to jump through, just pop in the $30 retail Snow Leopard upgrade disc and go. This had previously only been possible with some awkward
Hackintosh
-style maneuvering, or using recent editions of commercial
virtualization
products.
At this early stage, performance is fairly sluggish, the screen size is fixed and there’s no sound support, but the OS otherwise appears to run feature-complete (including networking and USB). Hopefully future builds will ramp up to the level of functionality and performance that VirtualBox provides for other guest operating systems.
Installation tip: when you come to the step prompting for a target disk for installation (which will likely show no available volumes), run Disk Utility from the “Utilities” menu, format the virtual disk image you created when setting up the VM (Mac OS Extended, Journaled), then exit Disk Utility to return to the OS X installer. You can then select the newly-formatted virtual disk and proceed with installation. | 37 | 37 | [
{
"comment_id": "139804",
"author": "vaporland",
"timestamp": "2010-05-03T17:54:56",
"content": "(1) use the fixed size hard drive; the dyanamically expanding drive format doesn’t work in OS X(2) folder sharing in Virtual Box does not work in OS X, but the guest system can see the host system’s Mac ... | 1,760,377,449.776136 | ||
https://hackaday.com/2010/05/03/wyvern-quadcopter/ | Wyvern quadcopter | Mike Szczys | [
"Wireless Hacks"
] | [
"helicopter",
"quadcopter",
"rc"
] | [William Etter] and his classmates
built a quadcopter as a class project
. We love the details of these builds and they came through with some thorough documentation. Some highlights that we enjoyed were reading about
ABS body design
and construction, their
analysis of two versus three blade propellers
, and their
breadboarded control mechanism
. You can
see their success
in the most recent post, but we all know that trial and error plays a role in these builds so we’re glad they’ve shared
a collection of crashes
with us.
Can’t get enough of this four-rotor action? Check out
this project of a similar design
. | 9 | 9 | [
{
"comment_id": "139790",
"author": "fluidic",
"timestamp": "2010-05-03T16:28:29",
"content": "Somehow this “budget aircraft” blog appears to have zero info on build cost.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "139797",
"author": "n2o",
"timest... | 1,760,377,449.82507 | ||
https://hackaday.com/2010/05/03/remote-control-reel-mower/ | Remote Control Reel Mower | Mike Szczys | [
"green hacks",
"home hacks"
] | [
"electric",
"lawn",
"mower",
"rc",
"reel",
"solar"
] | Challenged by hot days and steep turf [Grayson Sigler]
modified his reel mower to use electric motors
. The end product will be radio controlled but he lacked the necessary parts to make it wireless right now. Not to be deterred, he used a wired controller for prototyping and testing that should be easily replaced once the parts arrive. Sadly, the grade of his yard causes the small wheels to slip so he tried inserting screws into the tread for added traction. The small mower lacks the weight and footprint that
the Lawnbot400
enjoys. That being said, solar charging is one of the future goals so this build, which he named RoMOW, wins out on the green scale. We’ve included the prototype video after the break that shows the blades spinning away.
[youtube=http://www.youtube.com/watch?v=0Xg_XWJldRA]
[Thanks Kellie] | 19 | 18 | [
{
"comment_id": "139768",
"author": "tony",
"timestamp": "2010-05-03T14:38:58",
"content": "Wow, that thing looks like all kinds of trouble. Pretty cool.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "139772",
"author": "Jasen",
"timestamp": "2010-05-0... | 1,760,377,449.953406 | ||
https://hackaday.com/2010/05/03/headphone-tube-preamp-kit/ | Headphone Tube Preamp Kit | Mike Szczys | [
"digital audio hacks"
] | [
"kit",
"preamp",
"tube",
"vacuum"
] | If you’re curious about tube amps but don’t have a firm enough knowledge base to dive right in you might want to try a kit. [Mark Houston]
reviewed one such kit
and we enjoyed reading about his experiences. It comes with everything you need save soldering tools, an enclosure, and the final connectors ([Mark] used RCA connectors). There is a full schematic available and the assembly instructions take you through tube matching and using that piece of copper coil you see in the picture to wind your own inductor. Consider trying this primer before you jump into building a
single tube
,
multiple tube
, or an amplifier of your own design.
[Thanks Gio] | 23 | 23 | [
{
"comment_id": "139754",
"author": "Alan",
"timestamp": "2010-05-03T13:08:39",
"content": "I like tubes also, but why is this better thana non-tube amp?Looks like it has several negatives like mismatched tubes and sensitivity to vibrations,so I’d like to know what makes is superior to asimple trans... | 1,760,377,450.088936 | ||
https://hackaday.com/2010/05/01/motorcycle%c2%a0computer/ | Motorcycle computer | Mike Szczys | [
"Transportation Hacks"
] | [
"arduino",
"DS18B20",
"motorcycle"
] | Hackaday writer of yore [
Will O’Brien
] has been working on this
hardware for his motorcycle
. Speed, voltage, gear, and temperature data is displayed on a 16×2 character LCD. The speed is pulled from the bike itself and the gear is calculated by comparing engine RPM to wheel RPM. He’s using
the popular DS1820
1-wire temp sensor along with an Arduino to pull everything together. At this point he estimates there’s about $50 worth of parts, but that can be reduced by etching a board and just using the necessary components. | 21 | 20 | [
{
"comment_id": "139379",
"author": "az1324",
"timestamp": "2010-05-01T15:21:00",
"content": "“but that can be reduced by etching a board and just using the necessary components.”WHAAAAAAAAAAT?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "139380",
"autho... | 1,760,377,450.140539 | ||
https://hackaday.com/2010/04/30/adding-reset-to-an-ftdi-cable/ | Adding Reset To An FTDI Cable | Mike Szczys | [
"Arduino Hacks"
] | [
"arduino",
"ftdi",
"programmer"
] | Hackaday alum [
Adam Harris
]
hacked an FTDI cable
to use for programming his Arduino. After cracking open the plastic case he found the FTDI chip used is the same as the one in
the SparkFun programmer
. The only real difference was that his cable wasn’t resetting the Arduino, he had to do that manually. The solution was to reroute the RTS wire so that it connected up to the DTR pin. This proved difficult because of the tiny footprint of the chip, but after many tries he managed to get a piece of wire wrap soldered in place. | 18 | 18 | [
{
"comment_id": "139226",
"author": "Micah",
"timestamp": "2010-04-30T21:19:46",
"content": "Umm… I just used one of these to connect to an Arduino the other day, and this “hack” is completely unnecessary. You can just use the RTS pin instead of the DTR signal and it will still work.",
"parent_... | 1,760,377,450.194047 | ||
https://hackaday.com/2010/04/30/using-ac-frequency-as-a-clock-signal/ | Using A/C Frequency As A Clock Signal | Mike Szczys | [
"clock hacks"
] | [
"clock",
"frequency"
] | A while back
we saw a logic clock that
used the alternating current frequency from the power grid to keep time. We asked for information on your projects that use this method and we got a lot of comments and tips. Today we’re sharing [Doug Jackson’s] method which he used in
his word clock
.
The
schematic above
is from that project and we’ve outlined the important part in green. [Doug] pulls a signal from the 9V AC power before it hits the bridge rectifier, using a 100K resistor and a zener diode to protect the microcontroller pin. The code for that project comes as a hex file but he sent us the C code pertaining to this timing circuit. It’s written for PIC but you’ll have no trouble adapting it to other microcontroller families. Take a look after the break.
// Set the frequency of the local mains - MUST BE SET OR THE CLOCK WILL BE USELESS
//#define MAINS_FREQ 50 // the local mains supply frequency for Australia
#define MAINS_FREQ 60 // the local mains supply frequency for the USA
T1CON = 0b00000011; // Timer 1 control
// Prescale - 00 - 1:1, Oscilator disabled, External Clock, Timer Enebled
void incrementtime(void){
// increment the time counters keeping care to rollover as required
sec=0;
if (++min >= 60) {
min=0;
if (++hour == 13) {
hour=1; }
}
}
void interrupt my_isr(void){
// test to see if it was a Timer 1 interrupt - External mains source
if ((TMR1IE) && (TMR1IF) && (mode==0)){
sec++; // increment the seconds counter
TMR1IF=0;
TMR1H=0xff;
TMR1L=MAINS_DLY; // reset TMR1H and TMR1L to go off in the
// appropriate number of cycles based on the local
// supply frequency
}
}
void main(void)
{
init(); // initialise the hardware
testleds(); // test the LED array
version(); // Display the version number of the software
displaytime(); // display the current time
TMR1H=0xff;
TMR1L=MAINS_DLY; // reset TMR1H and TMR1L to go off in the number of
// mains cycles based on the local mains frequency
ei();
while (1) {
//test to see if we need to increment the time counters
if (sec==60)
{
incrementtime();
displaytime();
}
....... etc etc etc - do the display of the time as required.....
}
} | 31 | 28 | [
{
"comment_id": "139215",
"author": "Eric",
"timestamp": "2010-04-30T20:25:16",
"content": "It may be irrelevant, but I just noticed a funny typo in that script. It was a comment, though, so nbd. See if you can find it and guess why it’s funny.",
"parent_id": null,
"depth": 1,
"replies":... | 1,760,377,450.369306 | ||
https://hackaday.com/2010/04/30/ball-inverted-pendulum/ | Ball Inverted Pendulum | Caleb Kraft | [
"Robots Hacks"
] | [
"balance",
"ball"
] | [youtube=http://www.youtube.com/watch?v=bI06lujiD7E]
We’ve seen several different balancing bot styles over the past few years, but this one is new to us. The
BallP, short for Ball inverted Pendulum
, balances on top of a ball. We’re not sure what the advantages are to this layout though. Anyone care to enlighten us? Even though we hadn’t seen this style, it is apparently not new. The
Ballbot has been around for a while
and might seem even more impressive visually. | 40 | 40 | [
{
"comment_id": "139201",
"author": "Rob",
"timestamp": "2010-04-30T19:04:41",
"content": "At least we found a use for those printable mecanum wheels!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "139204",
"author": "Jeremy",
"timestamp": "2010-04-30T... | 1,760,377,450.496526 | ||
https://hackaday.com/2010/04/30/optiboot-makes-your-arduino-faster-sleeker/ | Optiboot Makes Your Arduino Faster, Sleeker | Mike Szczys | [
"Arduino Hacks"
] | [
"arduino",
"baud",
"bootloader",
"optiboot"
] | Tired of waiting for that Arduino sketch to upload? Find yourself limited by code space?
Optiboot
eases both of these problems. The package is an alternative bootloader that runs at a higher baud rate (115200 versus 57600) and it takes up 1.5 KB less space than the stock version. This means your sketches can be larger without upgrading to a beefier chip and they will take less time to upload, a lot less.
This fully compatible alternative to the Arduino bootloader requires an AVR ISP programmer to burn it to the chip on your Arduino. If you have an extra AVR lying around you could
use the Arduino as a programmer
and then physically swap the chips.
[Thanks Peter] | 31 | 30 | [
{
"comment_id": "139186",
"author": "Brennan",
"timestamp": "2010-04-30T18:13:25",
"content": "Best. PCB Design. Ever.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "139188",
"author": "walt",
"timestamp": "2010-04-30T18:20:46",
"content": "naa. I ... | 1,760,377,451.125631 | ||
https://hackaday.com/2010/04/30/perfect-spiral-every-time/ | Perfect Spiral, Every Time | Jakob Griffith | [
"Misc Hacks"
] | [
"air",
"automated",
"camera",
"canon",
"football",
"jug",
"launcher",
"machine",
"platform",
"potato",
"tracking"
] | [Carmine] let us know about his team’s
Automated Football Launcher
. Their goal was to combine a football launcher with motion tracking, to allow a player to practice running and catching with the perfect throw. Unfortunately, and we’re not quite sure
when
, they ended up changing out the
Jugs machine
for an air cannon, which resulted in the use of foam footballs and the loss of throwing factors such as spiral. Somewhat defeating the purpose but we’ll let it slide; only because we know its going to be shooting
potatoes eventually
.
The project comes together by using two cameras giving distance and color tracking, combined with a rotating platform (and the best use of garden hose ever), an accurate set-top for their launcher. As seen in the video after the jump, it works out quite nicely.
[youtube
http://www.youtube.com/watch?v=F670W2RKs6I%5D | 20 | 19 | [
{
"comment_id": "139167",
"author": "medix",
"timestamp": "2010-04-30T15:18:59",
"content": "Rifled barrel + potato = huge distance with tons ‘o accuracy. Now just gotta figure out how to rifle a piece of PVC.. ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": ... | 1,760,377,450.428804 | ||
https://hackaday.com/2010/04/30/9-digit-pulse-counter/ | 9 Digit Pulse Counter | Caleb Kraft | [
"classic hacks",
"Tool Hacks"
] | [
"pulse",
"stepper",
"tool"
] | At roughly $20 to build, this
9 digit pulse counter
is an excellent example of home built tools. The builder, [Josh] found himself repairing a device and in need of a pulse counter. With the components cheaply available, he just built his own. He says that it has a few limitations, like display brightness, but overall it seems to do the job well. You can download the PCB from his site.
[via
MakeZine
] | 11 | 11 | [
{
"comment_id": "139138",
"author": "XenoMuta",
"timestamp": "2010-04-30T13:25:57",
"content": "Simply Sweet. Try putting some shades to the display, maybe negative photo film.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "139147",
"author": "osgeld",
... | 1,760,377,450.546147 |
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