36 lines
866 B
Markdown
36 lines
866 B
Markdown
# On Data Received
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Run part of a program when the micro:bit receives a
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[number](/reference/types/number) or [string](/reference/types/string) over ``radio``.
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```sig
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radio.onDataReceived(() => { });
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```
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### Simulator
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This function only works on the micro:bit, not in browsers.
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### Example
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This program keeps sending numbers that says how fast the micro:bit is
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slowing down or speeding up. It also receives numbers for the same
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thing from nearby micro:bits. It shows these numbers as a
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[bar graph](/reference/led/plot-bar-graph).
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```blocks
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basic.forever(() => {
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radio.sendNumber(input.acceleration(Dimension.X));
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})
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radio.onDataReceived(() => {
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led.plotBarGraph(radio.receiveNumber(), 1023);
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})
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```
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### See also
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[receive number](/reference/radio/receive-number),
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[send number](/reference/radio/send-number), [set group](/reference/radio/set-group)
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