Arduino Gemma
Arduino Gemma Arduino Gemma Arduino Gemma Arduino Gemma
$9.95

The Arduino Gemma is a miniature wearable microcontroller board based on the ATtiny85. It has 3 digital input/output pins (of which 2 can be used as PWM outputs and 1 as analog input), an 8 MHz resonator, a micro USB connection, a JST connector for a 3.7V Li-Ion battery, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a battery to get started.

Find here more informations (including the tech specs) about the Arduino Gemma.