Serial Port

3.1 These port is PH2.0-4PIN.

3.2 This interface possess 4 pin: 5v, GND, TX, RX.

You can connect some module with Serial port communication. (For example: Wifi camera)

As shown below.

Micro:bit supports serial port redirection. If you want to use this serial port socket on the super:bit expansion board, Just set TX to P1 and RX to P2.

As shown below.

4. I2C Port

4.1 This interface possess 4 pin: 3.3v,SCL, SDA, GND.

4.2 The type is PH2.0 4PIN.

You can connect some module with I2C communication.

As shown below.

You need to add extension package of corresponding module.

Eg: We use Yahboom Voice module.

Extension package link: https://github.com/YahboomTechnology/Speech