I was unable to find any resources on this: Is the flipper zero able to broadcast bluetooth signals WITHOUT an actual connection to a specific device? And if yes, can it send “custom” signals?
My idea is: make a programm on my pc that checks for incoming Bluetooth signals, if it finds one that matches the one sent from flipper it will execute some code.
Flipper: send signals
PC: receive signals and execute code
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The Bluetooth stack for the Flippers MCU is bigger than the available storage. So the Flipper Team decided to only implement a ‘light’ Bluetooth stack, that is able to communicate with a mobile phone.
And be aware it is BLE, not Bluetooth Classic.
And this is why you don’t have access to all BT features.
I would wait for Firmware 1.0 and take a look at the documentation. If you are familiar with sources if embedded devices, maybe you can find anything before in the source code.
I would start here: https://github.com/flipperdevices/flipperzero-firmware/tree/dev/firmware/targets/f7/ble_glue
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There is a very clunky thing you can do on the Flipper. The Flipper can change it’s Bluetooth MAC address. You could try to detect that change.