[obd.obd] 'b'010D': Vehicle Speed' is not supported

[guruvishnuvardan]

Hello Folks,

@brendan-w #@alistair23

I am using USB OB2 Connector, my objective is to get the speed of the Car(Honda City 2015 Model India)

Please find the following Code: **import obdq connection = obd.OBD("/dev/ttyUSB0") ports = obd.scan_serial() print(ports)

cmd = obd.commands.SPEED r = connection.query(cmd) print(r.value) OutPut: ['/dev/ttyUSB0'] [obd.obd] 'b'010D': Vehicle Speed' is not supported None I have made an attempt to print using connection.print_discovered(), Please find the output connection.print_discovered() AttributeError: 'OBD' object has no attribute 'print_discovered'**

import obd connection = obd.OBD("/dev/ttyUSB0") a = connection.get_supported_commands() Traceback (most recent call last): File "", line 1, in AttributeError: 'OBD' object has no attribute 'get_supported_commands'

System Information: Raspberry Pi 4 Raspbian OS pyOBD

Can you please help me resolve this issue Note: I have attached the USB OBD Connector Picture:

[guruvishnuvardan]

@brendan-w - Can you please help me fix this issue?

[connervieira]

I'm having the same issue. Regardless of what command I choose (RPM, speed, etc.) I get the same error as you. The only command I can successfully receive are the ELM commands, like ELM_VOLTAGE. My vehicle is a 2014 Nissan Altima, so it doesn't seem to be related to the car. I'm also using a Bluetooth adapter.

[guruvishnuvardan]

@connervieira -- Yes, I guess it's about the OBD 2 adapter ... @brendan-w -- Can you please help us

[csurf]

When python-OBD initializes its connection to the elm327 chip, it sends PID '01 00', which is a request to get all PID's that are supported by the vehicle. I've found that python-OBD will sometimes fail to process the response to this command. When this happens, python-OBD won't build it's internal list of 'supported commands' and will simply reject any attempt at requesting those commands. The ony way around it is to either use the 'force' option when running a command query, or to fix the root problem with the initial '01 00' command failing.

In my case, I needed to manually set the protocol and also add a timeout to the initial 'get supported commands' query within the python-OBD code.