Radio blocks let micro:bits communicate without wires! You need two micro:bits, one to be the sender and the other to be the receiver.
Run this script on your micro:bit. Hint: When you click to run it, make sure you see a yellow outline around it; that shows that it is running.
CC BY-SA 4.0
v2.0
Have a friend run these blocks on their micro:bit.
How far does the radio reach? Is it blocked by walls or your body?
How many letters can you send with the radio send string block?
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micro:bit | Radio
Basic Sensors
Radio
Libraries:
LED Display
CC BY-SA 4.0
v2.0
Receiver Script
After you make this script, disconnect the micro:bit and attach it to a battery.
Sender Scripts
Plug in another micro:bit and make these scripts. Press the A and B buttons to control the first micro:bit!
A group is like your own private radio channel. Use the same group number for your sender and receiver but different from others nearby.
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micro:bit | Radio
If others near you are also using radio,
use different groups to avoid confusion.
Add this script to both sender and receiver.