Bluetooth Accelerometer Service

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. Once paired, the other device may connect to the micro:bit and exchange data relating to many of the micro:bit’s features.

The Bluetooth accelerometer service allows another device such as a smartphone to wirelessly receive data from the micro:bit’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.

Using the Bluetooth accelerometer service you could, for example, create a smartphone application which makes a loud noise whenever your micro:bit (or the important thing you’ve attached it to) is moved. Or you could use your micro:bit to control the movement of a cartoon character in a game on your smartphone just by tilting the micro:bit in the direction you want the character to move in.

No additional code is needed on the micro:bit to use the Bluetooth accelerometer service from another device.


Example: Starting the Bluetooth accelerometer service

The following code shows the Bluetooth accelerometer service being started:


Video - Accelerometer service demo - Starts at 0:18


For more advanced information on the micro:bit Bluetooth accelerometer service including information on using a smartphone, see the Lancaster University micro:bit runtime technical documentation

See also

About Bluetooth, micro:bit Bluetooth profile overview , micro:bit Bluetooth profile reference, Bluetooth on micro:bit resources, Bluetooth SIG