43 lines
2.3 KiB
Markdown
Executable File
43 lines
2.3 KiB
Markdown
Executable File
# Bluetooth Accelerometer Service
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## ~hint
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For another device like a smartphone to use any of the Bluetooth "services" which the @boardname@ has, it must first be [paired with the @boardname@](/reference/bluetooth/bluetooth-pairing). Once paired, the other device may connect to the @boardname@ and exchange data relating to many of the @boardname@'s features.
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## ~
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The Bluetooth accelerometer service allows another device such as a smartphone to wirelessly receive data from the @boardname@'s accelerometer. An accelerometer detects motion. More precisely, it measures acceleration in one or more of three directions which we call X, Y and Z.
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Using the Bluetooth accelerometer service you could, for example, create a smartphone application which makes a loud noise whenever your @boardname@ (or the important thing you've attached it to) is moved. Or you could use your @boardname@ to control the movement of a cartoon character in a game on your smartphone just by tilting the @boardname@ in the direction you want the character to move in.
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No additional code is needed on the @boardname@ to use the Bluetooth accelerometer service from another device.
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```sig
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bluetooth.startAccelerometerService();
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```
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## Example: Starting the Bluetooth accelerometer service
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The following code shows the Bluetooth accelerometer service being started:
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```blocks
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bluetooth.startAccelerometerService();
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```
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## Video - Accelerometer service demo - Starts at 0:18
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http://www.youtube.com/watch?v=aep_GVowKfs#t=18s
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## Advanced
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For more advanced information on the @boardname@ Bluetooth accelerometer service including information on using a smartphone, see the [Lancaster University @boardname@ runtime technical documentation](http://lancaster-university.github.io/microbit-docs/ble/accelerometer-service/)
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## See also
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[About Bluetooth](/reference/bluetooth/about-bluetooth), [@boardname@ Bluetooth profile overview ](http://lancaster-university.github.io/microbit-docs/ble/profile/), [@boardname@ Bluetooth profile reference](http://lancaster-university.github.io/microbit-docs/resources/bluetooth/microbit-profile-V1.9-Level-2.pdf), [Bluetooth on @boardname@ resources](http://bluetooth-mdw.blogspot.co.uk/p/bbc-microbit.html), [Bluetooth SIG](https://www.bluetooth.com)
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```package
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bluetooth
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```
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