M5:bit It is an M5Core-to-Microbit serial communication converter/adapter board.
The adapter board connects the Microbit Uart port to the GROVE port on M5core,which realized the function of serial communication between M5Core and Microbit.
More IO pins are extended, you can used DuPont Cable to connect other hardware.
By default, the Microbit pins P8 (TX) and P12 (RX) are connected to the GROVE interface.
Thank you for good items and good price. Delivery days are 18 days.