March 9, 2021, 6:43pm
i’m experiencing brutal yaw movements with my 5" quad :
F55A pro2 t-motor esc
matek H743 slim
M8n gps/compass module
watching the log data for rc control yaw (channel 4) so it’s normal, i mean the controller is not receiving an order to change the yaw …
YawErr in the log file is giving me some higher values around in some areas.
also you can notice the GyrZ to see the yaw movements (or twitches) …
what can be the problem !
this is a .bin log file , it’s a 25 seconds flight, at 13:44:57s a huge 360 degree turn ! (200ms to accomplish it !) :
this one is the parameters file :
thanks in advance.
March 10, 2021, 1:55pm
today i checked the imu1 data (GyrZ) Vs imu2 data (Gyrz) :
i found that the imu1 measurements are glitching ! (check attached)
so i set the INS_USE to “zero” to use only the second imu or (imu2)
everything worked fine : now what is causing the first imu to do so ?!
March 10, 2021, 2:12pm
Perhaps this is being addressed but it may not be the problem you are seeing.
August 10, 2022, 10:41am
same problem here with Matek H743 Slim, on accelerometers ( gyros are ok, they match pretty well )
I’m going to try same dumping on FC supports to see if vibrations have an impact on this mismatches
IMU0 and IMU1 AccY ( same issue on X)
August 21, 2022, 7:55pm
kindly check this
i fly my little babe at home, so no gps … and look at the section between 3:00min and 4:00min (i’ve got a stable flight)
i tested the arducopter 4.2.2 but the problem is still the same !
the problem is with IMU0, compare Grz1 to Grz0 and see …
i think it’s a IMU0 driver related issue.