OBD Bluetooth not working

[DaveRack]

Hello, I have problems establishing a bluetooth obd connection with OAP.



Manually connect and pair works, the adapter also flashes short blue when the OAP dashboard is started, but that's it.



Bluetooth Dongle TP-Link UB400 (CSR8510 A10 chipset).

OAP logfile with errors attached.

[Daniel_BlueWave]

Did you pair your adapter with Rpi? What OBD adapter are you using?

Did you follow configuration from here: https://bluewavestudio.io/community/thread-1865.html ?

[DaveRack]

Yes, paired it with Rpi.

Pair and connect with bluetoothctl works.



yes:

ObdProbePeriod=5

ObdDeviceType=2

ObdAdapterRfCommAddress=XXXX

ObdAdapterRfCommChannel=1  (I tested channel 1 and 2 because sdptool records shows channel 2 for my ELM327.)

ObdMaxNoDataResponseCount=20


It is an elm327 aliexpress adapter, but works with Windows and Android(AT commands also work).

[BlueWave]

Looks like your ELM327 is not genuine one. It probably does not support some commands from startup sequence https://www.bluewavestudio.io/community/...1#pid11931.

[DaveRack]

I tested the at commands manually in windows.
See the screenshot.
Are the results correct?

[DaveRack]

The cheap ELM adapter was to blame.
With a Vgate iCar Pro it works immediately..

[Daniel_BlueWave]

Cheap not always mean good enough Thanks for the feedback. Enjoy.