Teensy USB Development Board
http://www.pjrc.com/teensy/

The Teensy is a complete USB-based microcontoller development system, featuring a 16 MHz AVR (AT90USB162) processor, in a very small footprint! All programming is done via the USB port. No special programmer is needed, only a standard "Mini-B" USB cable and a PC or Macintosh with a USB port.

A social letterbox. Prints messages directly from the Internet.

A social letterbox. Prints messages directly from the Internet. Based on the arduino microcontroller.

The printer that Ben Griffiths is building. I read about Tom Taylor building one at PaperCamp - looks cool.

"microprinter for everyday use"

レシートプリンタをインターネットに接続。

TEXT-(HTTP POST)->sinatra(as MQ)-(ethernet)->arduino-((MAX232+)RS232c)->micropriner

The microprinter is an experiment in physical activity streams and notification, using a repurposed receipt printer connected to the web. I use it for things like reminders, notifications, and my day at-a-glance, but anything that can be injected from the web and suits text only, short format messaging, will work.

Electronik

Controllable Power Outlet by Nate | December 2, 2008 | 22 comments Controlling Big, Mean, Devices Microcontrollers are a ton of fun. Once I got hooked, there was no turning back. Initially playing with sensors and LCDs, I quickly discovered the limits to what a microcontroller could control. A microcontroller's GPIO (general purpose input/output) pins cannot handle higher power requirements. An LED was easy enough, but large power items such as light bulbs, toaster ovens, and blenders required more sneaky circuitry. Something sneaky called a relay: http://www.sparkfun.com/tutorial/Outlet/Outlet-1.jpg In this tutorial we will discuss a small relay board to control the power to a normal AC outlet using 5VDC control.

The folks who brought bakelite cell phone!

you. HAVE. to be kidding me.

BakerTweet is a way for busy bakers to tell the world that something hot and fresh has just come out of the oven.

Tweeting when bread is fresh...

Saiba quando o pão está fresco pelo Twitter.

littleBits is an opensource library of discrete electronic components pre-assembled in tiny circuit boards. Just as Legos allow you to create complex structures with very little engineering knowledge, littleBits are simple, intuitive, space-sensitive blocks that make prototyping with sophisticated electronics a matter of snapping small magnets together. With a growing number of available modules, littleBits aims to move electronics from late stages of the design process to its earliest ones, and from the hands of experts, to those of artists, makers and designers.

littleBits is an opensource library of discrete electronic components pre-assembled in tiny circuit boards. Just as Legos allow you to create complex structures with very little engineering knowledge, littleBits are simple, intuitive, space-sensitive blocks that make prototyping with sophisticated electronics a matter of snapping small magnets together.

modular circuit boards

Electronic modules that stick together with magnets to make complete circuits

Cheap Arduino wireless communications

I was looking for a way to handle wireless communications between two Arduino boards. Other options like Xbee or Bluetooth were going to cost $50 to over $100. Then I found a cheap RF transmitter and receiver at Sparkfun. The total cost is only $9!

"Contraptor is a DIY open source construction set for experimental personal fabrication, desktop manufacturing, prototyping and bootstrapping. Various сartesian robots can be assembled from Contraptor and used as a prototyping platform for projects such as XY plotter, mini CNC machine, 3D printer etc."

Contraptor is a DIY open source construction set for experimental personal fabrication, desktop manufacturing, prototyping and bootstrapping.

Foro de preguntas y respuestas para circuitos integrados

Chiphacker is a collaboratively edited question and answer site for electronics hackers – regardless of platform or language. It's 100% free, no registration required.

Weil Türen durch geheime Klopfzeichen aufgehen sollten.

While working on another project I ran across the Arduino knock sensor tutorial. Sensing a single knock is a great little project for learning about microcontrollers, but what about sensing specific knocks? Seeeeecret knocks? And if we could detect a secret knock, shouldn't it unlock a door? If you can't tell by looking this was cobbled together from spare stuff around the lab, it's not much more than a piezo speaker, a tiny gear reduction motor, and an Arduino. And PVC pipe.

"Seeeeecret knocks? And if we could detect a secret knock, shouldn't it unlock a door?" (via @yetzt)

Very neat contraption that can unlock your door based on a programmed knock. Not very practical but still pretty awesome.

Each year we do a guide to all open source hardware and this year there are over 125 unique projects/kits in 19 categories, up from about 60 in 2008, more than doubling the projects out there!

These are projects in which the creators have decided to completely publish all the source, schematics, firmware, software, bill of materials, parts list, drawings and "board" files to recreate the hardware - they also allow any use, including commercial. Similar to open source software like Linux, but this hardware centric

Welcome to definitive guide to open source hardware projects in 2009. First up - What is open source hardware? These are projects in which the creators have decided to completely publish all the source, schematics, firmware, software, bill of...

Open source hardware projects

This is very cool. The guy over at http://twitter.com/newlywedsontjob used this how to as his starting point!

The Twittering office chair "tweets" (posts a Twitter update) upon the detection of natural gas such as that produced by human flatulence. This is part of my commitment to accurately document and share my life as it happens.

http://www.marvell.com/products/embedded_processors/developer/kirkwood/sheevaplug.jsp

ponder

I’ve lately been trying to compile Arduino projects from command line. Primarily because the Arduino IDE wasn’t working out of the box on 64-bit Ubuntu (9.04). That problem was eventually solved, but I’ve been meaning to move away from that IDE anyway. If you happen to be replacing the Arduino IDE with Vim, I just uploaded an Arduino syntax file.

Includes python script to use the DTR autoreset feature.

IMU

howto — warning: the wire colors are not correct!!

Paper arduino.

This is a fully functional version of the Arduino. We eliminated the PCB and use paper and cardboard as support and the result is.. the PAPERduino :D

紙の Arduino

Atmel ATMega168