38 lines
1.2 KiB
Markdown
Executable File
38 lines
1.2 KiB
Markdown
Executable File
# On Bluetooth Disconnected
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### ~hint
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For another device like a smartphone to use any of the Bluetooth "services" which the micro:bit has, it must first be [paired with the micro:bit](/reference/bluetooth/bluetooth-pairing). Once paired, the other device may connect to the micro:bit and exchange data relating to many of the micro:bit's features.
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### ~
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This block starts an [event handler](/reference/event-handler) which in this case will run when a device which is connected to your micro:bit over Bluetooth disconnects.
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You could use this event handler to display a letter "D" on the micro:bit LED grid so you know that the Bluetooth connection has been closed.
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```sig
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bluetooth.onBluetoothDisconnected(() => {
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});
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```
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### Example: Displaying "D" when a Bluetooth connection to the micro:bit is closed
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```blocks
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bluetooth.onBluetoothDisconnected(() => {
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basic.showString("D");
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});
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```
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### Video - on Bluetooth disconnected
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http://www.youtube.com/watch?v=HyBcsD9Eh6I
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### See also
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[Bluetooth SIG](https://www.bluetooth.com), [Bluetooth on micro:bit resources](http://bluetooth-mdw.blogspot.co.uk/p/bbc-microbit.html)
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```package
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microbit-bluetooth
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```
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