ATTINY85 USB Development Board

Product details:

The ATtiny85 based mini development board is similar to the Arduino, but cheaper and smaller (ofcourse a bit less powerful). With a whole host of shields to extend its functionality and the ability to use the familiar Arduino IDE, this board is a great way to jump into microcontroller electronics.

Specification:

Support for the Arduino IDE 1.0+ (OSX/Win/Linux)
Power via USB or External Source
Onboard 5V Regulator
Built-in USB
6 I/O Pins
8k Flash Memory (about 6k after bootloader)
I2C and SPI (vis USI)
PWM on 3 pins (more possible with Software PWM)
ADC on 4 pins
Power LED and Test/Status LED

Package included:

1 x ATtiny85

Pin-out: