Android automatic Bluetooth connection

Question

When I turn on Bluetooth on my Android device and my Bluetooth speaker is in range, the phone automatically connects to the speaker, without me doing anything other that turning on Bluetooth.

I want to be able to do this with a Bluetooth module I am using in my Arduino Project. I wasn't able to find anything on that topic, but if my Chinese speaker does it, surely there must be a way mimic this behaviour.

My project involves Arduino, HC-05 module, and an android app. For now the connection is initiated with a button click inside the app. Is there a way to auto connect to the module before even starting an app? You connect to it, just by turning on Bluetooth on your device.

Answer 1

Record the physical address of your peripheral and start a connection each time you discover that particual address. Programatically, that's all you can do. Else, you would have to do it manually from your Bluetooth settings.