Micro:bit V2.2

Micro: bit is a micro computer board that the British Broadcasting Corporation (BBC) uses in STEM 
education. It is a 4 × 5 cm small circuit board. There are 25 LEDs, 2 buttons, built-in upgraded touch sensor and microphone on the front size. While on the back, there are different sensors including light, 
temperature, acceleration and compass, as well as BLE Bluetooth, loudspeaker and 25 I/O connectors.