The micro:bit is only the size of a card, but it can do a lot of things. It has built-in temperature, light and orientation sensors, as well as Bluetooth device, Micro USB interface. Not only that, it also has a row of pins that can be connected to various sensors. Therefore, the micro:bit can do all kinds of interesting experiments.
The left side of the above picture is the back of the V1 micro:bit board, and the right picture is the back of the V2 micro:bit board.
1.Radio Antennas and Bluetooth Antennas
2.CPU and temperature sensor
6.Micro USB socket
10.USB interface chip
13.Red Power LED
14.Yellow USB LED
15.Reset and power buttons