GPS V1 heading vs vehicle

Hi All,

I’ve never been able to get my GPS V1 to show a difference between gps.headingVehicle and gps.headingMotion. Here’s a scatter plot from a lap of the Nordschliefe, I wouldn’t expect this to be a straight line.

Looking at Lightclient, it looks like the x402 0 and 2 byte offset values are always the same, though I haven’t logged this on track yet.

Could this be a firmware issue (17.4) or is it user error?

Thanks,

Tim

Hi,
Is IMU fusion enabled or disabled in the Light Client?

The heading of the vehicle will only be calculated correctly with IMU fusion enabled.

I can’t actually see, all of the properties fields are blank. Happened in LC 2.2 and I just updated to 2.3 and it’s the same.

To view the settings, select the GPS device by double-clicking on it.
Currently, the ADU is selected.
(An arrow on the left side of the device list points to the selected device.)

Sorry for the user error there! I thought I had clicked it but obviously hadn’t.

IMU fusion is enabled, but I only have GPS selected

Okay, now check the GPS status in the logs.
It should be “GPS+IMU”.

It is GPS + IMU, here’s a screenshot (this log is too large to upload, though I’ve uploaded a short ~5 minute log which doesn’t include a whole lap)


20250502_0723_53.adulog (5.8 MB)