We're now carry Boarduino from Ladyada!
NOTE: Boarduino is coming with ATmega328 chip.
The Boarduino is an Arduino clone: when programmed with the Arduino bootloader, it can talk to the Arduino software and run sketches just like the original.
There are noticable differences between the Boarduino and the Arduino.
•Shields cannot be used as the form factor is so different
•16.00 MHz ceramic resonator is used instead of crystal, so cycle speed may be off by +- 0.3nS (0.5%). This isn't relevant for UART timing, servo drivers, PWM, etc. but could be an issue if you need nanosecond-precision timing. Note that the Arduino software only provides millisecond-precision timing for general sketches (1 second = 1000ms. 1ms = 1,000,000 ns)
The specifications for the USB boarduino include:
•Designed to plug into a breadboard for easy prototyping
•Petite size, only 2.75 " x 0.8" (75mm x 20mm)
•All 'standard' pins are brought out - Digital 0 thru 13, Analog 0 thru 5, ARef, 5V, Ground, 3.3V and Reset
•2 LEDs, green power and red "pin 13" LED just like the Arduino Diecimila/Duemilanove
•Standard Reset button
•ATmega328, running at 16.00 MHz, just like the Duemilanove
•6-pin standard ICSP header
•Standard USB jack
•USB or external power, selectable with a jumper
•500mA fuse protects your computer from current overdraw
•Low cost kit
•All through-hole parts are easy to solder - SMT chip is presoldered & tested when purchased as a kit
Documents and more info:
Boarduino Mfg link
(More information, including design notes, schematics, etc)
The kit comes all of the parts and easy
to assembled. Please check Parts List
document from Boarduino Mfg link for more detail. There is a
beginning experience with soldering iron
required. Please see Assembly
Instruction for more detail.