This cool system uses an Arduino board and home wiring to turn your local home telephone network into an intercom. When you take the phone off the hook it disconnects from the phone line and rings all of the phones with a different cadence. When you pick up the phone you get an open line so you can talk with loved ones and burglars who have broken in anywhere in the house.
This Sparkfun project by Nate creates a keyless entry fob for a Mazda using a Nike+iPod kit, allowing you to leave your car keys at home. Using a serial board you can read the input and output bits of the footpod and grab signals and decode them.
Why this hasn’t been done before is a mystery to me. This little hack project by Kellbot of NYCResistor takes a rolling ball, an optical mouse, a gutted PS2 controller, and some Arduino hacking and makes it into a working (and awesome) virtual Katamari. Why didn’t they have special controllers like this that came with the game? It makes so much sense!
Video or it didn’t happen. Oh, video is inside! What now, boyee?
Those little scamps over at Adafruit are always up to something. This time they built a “pager scanner” which is basically a system that grabs all of the pages transmitted on pager networks and displays them. Sadly, the pager network isn’t as juicy as it used to be and now only drops sports scores and emergency broadcasts.
This kaleidoscopic fever dream of a coffee table is equipped with a 9×9 matrix of LEDs, which can apparently be set to “acid flashback” mode if necessary. It’s kind of like a demonically-possessed Lite Brite. When it’s not blasting color at your living room, though, I can think of a couple interesting uses for it.
Since neckwarmers just can’t be neckwarmers, this guy put together a LilyPad Arduino neckwarmer. A simple neckwarmer was modified with lights, a LilyPad Arduino, and a light sensor to make the lights blink when it’s dark.
So you need your project to pause for a preset number of minutes but you can’t do it programatically? Why not connect a micro-controller to an hourglass egg timer to sense when the sand stops moving through the glass. A motor then resets the hourglass once the sand runs out, thereby repeating the process, ad infinitum. Pretty groovy, huh?
It’s really more half-a-Triscuit-sized. This little 1.2″x0.7″ $20 board is a good solution for your home projects that require a little computation but not a lot of space. Say you want to put a little RFID detector in your door that unlocks it when you come near. Don’t need a big hard drive-sized package nailed to the door; with a Teensy you could practically embed the system in the doorknob.
Make’s Phil Torrone entered this odd gadget, the Tweet-a-Watt, in the Green Gadgets design competition. It’s essentially a Kill-a-Watt with a capacitor and transmitter added that will Tweet your current power usage using a nearby computer or wireless Arduino mini PC.

These little Arduino boards are a real boon to amateur electronics tinkerers: cheap, versatile, and very small. This guy had the idea to make a high-speed photography setup using one, instead of the more direct circuits usually involved. His reasoning was that the Arduino allows for a lot of easy customization, like for instance hooking up a sound sensor as well as a laser sensor. It allows for failsafes, better timing, and involvement of mixed hardware and software which may in turn control the object drop, speed of projectile, and so on.
I’d definitely be rocking one of these if I had the time to throw down on some sweet high-speed shooting. His gallery is here, but there are more photos over at Hack n Mod.
This haxor installed an Arduino Mini into a Game Boy case and then used a MIDI keyboard to play through the internal speaker. It basically turns the Game Boy into a synthesizer. The code is open so you can mod it all yourself. The Arduino is an open hardware platform that we’ve covered here quite a bit.
This odd fellow is an Arduino-based system for reading - and reacting to - incoming Twitter messages. While his eyes look like they’re made of CORN it’s nice to see someone as sad as me about getting incoming Tweets.
Anita Lillie at the MIT Media Lab created an Arduino-based sleep tracker to process where she keeps her arms while thrashing in the great deep sea of sleep.
The best part is that she created a graphing system that shows her movements and positions while she slept.
My main problem with waking up in the morning is that feeling of grogginess along with an intense desire to sleep more. However, I’ve noticed that sleeping without an alarm clock, and just waking up whenever I wake up, helps. And I’ve also noticed that sometimes when I wake up I am dramatically more refreshed than usual. Reading about sleep on the web led me to learn more about sleep cycles. One interesting page (”The power of the Sleep Cycle”) claimed that it wasn’t the amount of sleep one gets, but the part of the sleep cycle we wake up in. The author suggested that, because we sleep in cycles about 90 minutes long, we should aim to wake up in the transition between sleep cycles, since the brain is more alert and refreshed at that time.
A noble goal and a great way to look like a cyborg while you sleep.

Arduino boards are very cool little system boards that let you do all sorts of cool electronics tricks by adding a few sensors and writing some code on your PC or Mac. Now theere is the Adruino Nano, a board that packs in the power of the Arduino Diecimila into something the size of a stick of gum.
The board is based on the ATmega168 and has 16 I/O pits, 6 analog inputs, a USB jack, and most of that means nothing to me since I stopped building my on electronics when I realized resistors came in multiple colors. My buddy Paul is really great at this stuff so maybe I’ll have him make me a tele-dildonics kit.
Arduino is little open source circuit board that lets you create some fairly compelling projects with a few lines of code and some circuit boards. The latest addition to the project is LiquidWare’s TouchShield, an sensitive OLED that sits on top of the main board. Here it interacts with its human subject.
(via Make)