Development board using the ATMEL ATtiny85 microcontroller. It has its own USB bootloader and built in USB capability, you can program it for Compatible with Arduino SDK and also use it as native USB device.
Feature:
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 (on Pin0).
Size: 0.71 * 1.05 in
Package included:
10 * Micro USB Development Board (with Pins)