In order to facilitate micro bit to drive dc motor, we specially designed this expansion board. Tb6612f-ng chip is assembled on the expansion board. It outputs continuous driving current up to 1.2a per channel, and the peak starting current is up to 2A/ 3.2a. PWM supports frequency up to 100kHz.

To facilitate wiring, the extension board USES the 3PiN interface to lead all pins, allowing you to connect with other sensors with a 3PiN wire. At the same time, 3.3v and 5V voltage stabilizing chips are assembled on the extension board to lead out the output interfaces of 3.3v and 5V power supply. The extension board is equipped with serial port communication interface to facilitate connection of bluetooth module.