I'm trying to connect an OBD2 (ELM327) bluetooth adapter to my Raspberry Pi 3. I have the Raspbian updated software and I installed the Bluez latest version. I also made a C program in Raspberry Pi that communicate with a Simulator in Windows (connected with Bluetooth) and that's what I'm trying to apply to the OBD2.
The problem is that I can connect with other Bluetooth devices like my laptop but the OBD2 always give me the same error: "Connection failed - No usable services on this device".
So I searched a lot and I can't find a solution to this.
I know that this is an old topic and I searched a lot in this forum but there are no solutions...
The topics I saw:
Anyone knows how to make the connection? I've stuck in this problem and I can't continue with my project without this...