micro:Touch - Math & Automation Touch Keyboard for micro:bit [Discontinued]This is a math & automatic expansion board for the BBC micro: bit. It's easy to use and suitable for a wide range of applications. DFRobot designed this board for two sorts of application scenarios: math games and automation control. The 16 programmable touch keys and RGB LEDs on the board offer rich function and flexible input and output. The board has 1 vibration motor, 1 buzzer, 2 motor ports, 2 servo ports and 9 expansion ports, which lays a