Micro:bit’s CPU (Central Processing Unit) has a built-in 2.4 GHz radio module that allows you to send and receive messages wirelessly for short distances about 70 meters (230 feet) when using the maximum transmission power. With MakeCode for micro:bit, you can build a wide range of applications that can be used to exchange data between micro:bit boards (e.g., broadcasting sensor data).
14-1. Creating Radio Groups
You want your micro:bit to communicate with other micro:bits.
In the Toolbox, click on the Radio category. Then click and drag the radio ...