Digispark
The Digispark is an Attiny85 based microcontroller development board similar to the Arduino line, perfect for when an Arduino is too big.
Specification
- Attiny85
- Power via USB or External Source (regulated 5v or 7-35v, 12v or less recommended with automatic selection)
- On-board 500ma 5V Regulator
- Built-in USB
- 6 I/O Pins (2 are used for USB only if your program actively communicates over USB, otherwise you can use all 6 even if you are programming via USB)
- 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