pxt-calliope/docs/reference/radio/send-string.md

Send String

Sends a string to other micro:bits in the area connected by radio.

radio.sendString("Hello!")

Parameters

• msg is a string to send by radio.

Simulator

This function only works on the micro:bit, not in browsers.

Example: Two-way radio

If you load this program onto two or more micro:bits, you can send a code word from one of them to the others by pressing button A. The other micro:bits will receive the code word and then show it.

input.onButtonPressed(Button.A, () => {
    radio.sendString("Codeword: TRIMARAN")
    basic.showString("SENT");
})

radio.onDataReceived(() => {
    basic.showString(radio.receiveString());
});

~hint

A radio that can both transmit and receive is called a transceiver.

~

See also

receive string, on data received