The ESP32 is a microcontroller that provides an API for Bluetooth A2DP which can be used to receive sound data e.g. from your Mobile Phone and makes it available via a callback method. The output is a ...

Bluetooth Low Energy (BLE) ... Attempt pairing (may fail on some devices) 4. Open OBD app (Torque Pro, etc.) 5. Select Bluetooth connection 6. If it works, monitor for disconnections 7. ... Known ...