Digispark is a microcontroller development board based on the Attiny85, similar to the Arduino product line, which is cheaper, smaller, and more powerful. With a large number of shields to extend its capabilities and the ability to use the familiar Arduino IDE, Digispark is a great way to jump into electronic devices, or for situations where the Arduino is too big or too big.

In addition to containing two easily solderable connectors, Digispark is fully assembled.

Here is the specification:

Supports Arduino IDE 1.0+ (OSX / Win / Linux)
Powered by USB or external power supply - 5v or 7-35v (12v or less recommended, automatically selected)
Onboard 500mA 5V Regulator
Built-in USB
6 I / O pins (used only when your program communicates via USB, otherwise you can use all 6 even if you program via USB)
8K flash (approx. 6K after bootloader)
I2C and SPI (visible USI)
PWM on 3 pins (more software PWM possible)
4 pin ADC
Power LED and Test/Status LED