Error 3300: Microbit extension BluetoothDevice is not set

[XD_SlimGuy]

Hello guys, please help me!

I try to use bluetooth to connect micro bit, but it appear an error. It said 'Error 3300: Error 1 in extension Microbit_Accelerometer: BluetoothDevice is not set'. How can I fix this?

[ChrisWard]

Hello XD SlimGuy, welcome to the forum

Unfortunately, the Micro:Bit library is broken (and a bit old). MIT are working on a new one. In the meantime, you can use Bluetooth functions to communicate.

App Inventor, Micro:bit and UART

App Inventor, Micro:bit and UART Somehow, communicating with a micro:bit via UART is more difficult than it should be. For now, using the extensions as indicated in this tutorial, will ensure that everything works. This tutorial is intended to show how to use Bluetooth Low Energy (BLE) to send messages to a micro:bit. This can be used to control a toy robot car or any device that uses a micro:bit as its brain. This first part will only cover the basic communication with a micro:bit via BLE. A…

[Ghica]

Some of the micro:bit extension should work, but I did not try lately.
The first question however, did your micro:bit connect ok?
Second question: why do you stop accelerometer updates upon connecting?
Third question: what is the code on your micro:bit?

[Lorenaheravi]

I have the same problem. Can you help me? This is my code.

Thanks

[Ghica]

Make sure that you have the latest BLE extension and the microbit extension,
see: MIT App Inventor Extensions
Make also sure that Bluetooth is on, on your phone.
In that case you do not need to ask for permissions, it is built-in into the extension.

Then, what is your problem?