Radio Broadcast
The Radio Broadcast extension has blocks for sending to and receiving messages from all the micro:bit boards nearby. Just two blocks are used, one to send a broadcast message and another to run code when a broadcast message is received.
A message, which is a number, is sent to, or received by all nearby micro:bit boards regardless of which Group number they are transmitting or receiving on.
Blocks in this extension
radio.sendMessage(0)
radio.onReceivedMessage(0, function() {})
See Also
radio-broadcast