The Calliope Mini

The calliope mini is similiar to the bbc microbit and distributed to grade schoolers in germany. It is sponsored by “Bundesministerium für Wirtschaft und Energie”, the German “Federal Ministry for Economic Affairs and Energy”.

More info here: https://calliope.cc/en/ueber-mini

It is an mbed-device using an NXP KL26z and like the microbit it has:

• nrf51822 (256 kB flash, 16 kB RAM)
• 5x5 LED grid
• 2 buttons
• accelerometer + compass

These additional features make it even more interesting for makers:

• RGB-LED (WS2812b)
• speaker and microphone
• motor driver (TI DRV8837)
• two grove connectors, one providing I2C and the other with GPIOs
• accelerometer + gyro + compass (BMX055 different from microbit)