Main Features

• 16 bright RGB LED lights
• Sensors
  • An accelerometer 
  • A temperature sensor 
  • Light sensor (v2 and v3 only)
  • Magnetometer (v2 and v3 only)

• An infrared transceiver
• A rechargeable battery
• Micro-SD card reader (v3 only)
• USB programming and communication interface

Engduino^® 3 

 A full technical specifications for Engduino 3 and Engduino battery can be downloaded. 

Engduino^® Version 2

IMPORTANT NOTE: Although the Engduino^® has a battery holder that looks like it can take an AAA battery, it cannot.

There's a version number written on the back. They also look slightly different because there are more sensors and a bigger expansion bus on the Engduino^® v2. 

Engduino^® Version 1