Arduino

DIY Secret Knock Detector lock is best use for Steampunk mechanical iris [Video]

DIY Secret Knock Detector lock is best use for Steampunk mechanical iris [Video]

Regular garage door openers are dull; why aren't you using a knock-controlled mechanical iris to authenticate visitors instead?  BFarn has been detailing his beautiful secret-knock detecting door project, which hides a tap-sensitive panel behind a huge Steakpunk-styled iris.

Video demo after the cut

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Humane Reader $20 information repository targets the destitute & disconnected

Humane Reader $20 information repository targets the destitute & disconnected

Remember the so-called "$10 laptop" project the Indian government was spearheading early last year, that turned out to be a basic standalone storage brick?  Something similar this way comes, in the shape of the Humane Reader: a low-cost 8-bit display device that uses your TV as a display and cheap PS/2 peripherals, it can store around five thousand texts - including local Wikipedia mirrors - but costs just $20.

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Korg Monotron meets iPad iElectribe & Wii Nunchuk for music mangling [Video]

Korg Monotron meets iPad iElectribe & Wii Nunchuk for music mangling [Video]

Take a Korg Monotron analog synth, throw in an iPad running Korg's excellent iElectribe app and then use an Arduino to tie the whole thing together: you're not only hitting some of the geekiest keywords around these days, but getting an awesome, glitchy, electronic music mangling setup.  YouTuber Denkitribe has been circuit bending his Monotron, coming up not only with the system described above, but one in which the accelerometer and joystick of a Wii Nunchuk are used to control the battery-powered synth.

Video after the cut

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DIY iPhone-controlled four-stage coil gun [Video]

DIY iPhone-controlled four-stage coil gun [Video]

What could be better than a DIY four stage coil gun capable of punching some serious holes in cardboard boxes?  How about mounting said-gun on a WiFi-controlled motorized turret, with a custom iPhone/iPad remote interface with live video streaming?  That's just what University of Arkansas engineering students Chris Farnell and Michael Helms put together.

Video demo after the cut

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DIY automatic ball balancing machine [Video]

DIY automatic ball balancing machine [Video]

Forget your Newton's Cradle or that squeezy stress toy; this might just be the best executive desk toy so far.  The handiwork of 0zimbra0, this simple square of wood is - thanks to a couple of servos, a webcam and our old friend the Arduino - capable of keeping a ball bearing either balanced or following continually moving patterns.

Video demo after the cut

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Twitwee Clock replaces cuckoo with Twitter bird [Video]

Twitwee Clock replaces cuckoo with Twitter bird [Video]

We're quite fond of bizarre gadgets that hook into Twitter, whether they be tweeting tables, monomes or robot fish, and so we're quite surprised that it's taken someone so long to use the blue Twitter bird logo in a tweeting cuckoo clock.  Happily Haroon Baig has filled that gap with his Twitwee Clock, a modified clock that replaces the traditional face with a set of chumby guts and keeps track of Twitter for a preset word, hashtag or username (in this case "TwitweeClock").

Video demo after the cut

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DIY Racing Hardware Sim gets hacked BMW instruments [Video]

DIY Racing Hardware Sim gets hacked BMW instruments [Video]

Multi-screen PC gaming setups have made racing simulators all the more engrossing, but nothing says "realism" like real parts hacked from a car and hooked up via USB.  Alex Rosiu has kicked off his DIY Racing Hardware Sim with the instrument cluster from a 1992 BMW 325i, using an Arduino to control the speedo and rev counter along with the various lights.

Video demo after the cut

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Core2duino triple-stacks Arduino for three CPU madness

Core2duino triple-stacks Arduino for three CPU madness

There's something about the Arduino that brings out the strangeness in people, and that's pretty much the only way we disguise this stacked monster.  Dubbed the Core3duino by its creator, John David, it takes and existing, dual-processor mod for the Arduino and adds in a third CPU.  Not only that, you also get a full 60 I/O connectors.

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Arduino Nano 3.0 slims down for compact breadboarding

Arduino Nano 3.0 slims down for compact breadboarding

Tinkerers, DIY-nuts and electronic manglers, hold onto your hats: there's a new Arduino in town.  Everybody's favorite prototyping board has just gained a new family member, in the shape of the Arduino Nano 3.0.  It drops the size down to just 1.7 x 0.7 inches while still packing integrated mini-USB, top-mounted LEDs and ATMEGA328, and in fact the only thing you're really doing without is the power jack.

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IllyClock squeezes color-changing time into coffee can [Video]

IllyClock squeezes color-changing time into coffee can [Video]

While showing admirable recycling motivation, sticking a clock inside an old coffee can isn't enough to impress us; Instructables member florinc makes the grade because his DIY IllyClock adds in some color magic too.  Based on a Wiseduino - an Arduino clone with an integrated real-time clock - and an LED shield, the clock lights up its numerals in different shades depending on the time of day.

Video demo after the cut

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DIY Quadrocopters: Quaduino NG and AeroQuad [Videos]

DIY Quadrocopters: Quaduino NG and AeroQuad [Videos]

Parrot's AR.Drone was a surprise hit at CES 2010, but if you can't wait for the off-the-shelf option and want some quadracopter action right now then there are a couple of DIY projects that might scratch that itch.  The Quaduino NG and the AeroQuad (pictured) both rely on the Arduino microprocessor as their flight boards, combining gyroscope information with other sensors to make steady flight more straightforward.

Video demos after the cut

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DIY Word Clock from old digital photo frame

DIY Word Clock from old digital photo frame

We reckon this is a mod that could be pretty popular after the holidays, when people wonder what exactly they're going to do with the non-wireless digital photo frames they've been given.  Matt Mets took one look at his and decided it would make a great DIY Word Clock, stepping through slides with the time written out long-hand; a frame that can automatically change the image every sixty seconds would even be able to do all the clock-work for him.

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