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

Send String

Broadcasts a string data packet to other micro:bits connected via radio.

Important Security Consideration

The functions in the radio namespace allow the BBC micro:bit to communicate with other micro:bits.

This API does not contain any form of encryption, authentication or authorization. It's purpose is solely for use as a teaching aid to demonstrate how simple communications operates, and to provide a sandpit through which learning can take place.

For serious applications, BLE should be considered a substantially more secure alternative.

radio.sendString("Hello world!")

Parameters

• msg - a string to be transmitted.

Examples

Broadcasts the provided string to other micro:bits.

input.onButtonPressed(Button.A, () => {
    radio.sendString("Mr. Watson, come here, I want to see you.")
})

See also

receive string, on data received