Make an ESP32 a "dummy" bluetooth device

Projects General Guidance
1

Hello !
I'm using Home Assistant to monitor my phone's connected Bluetooth devices and start automations.
However, my car doesn't have Bluetooth, and I would like to hide an ESP32 inside so I could detect when I turn on my car.
So my project seems quite simple : make a dummy bluetooth device which could be connected by Android.

But I have been working on it for some weeks and I still can't understand how to use GAPP server on my ESP32.
I did manage to pair my device to my phone, but it doesn't connect. It tells me that I need to download an external app (probably because the phone doesn't know its services)

So what should I do to make the dummiest bluetooth device ?
Which library could allow me to do that quite simply ?

Thanks for reading ! :smiley:

2

Run code to make the ESP32 look like a BLE keyboard.

For example, GitHub - T-vK/ESP32-BLE-Keyboard: Bluetooth LE Keyboard library for the ESP32 (Arduino IDE compatible)

Easier than creating a custom device.

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