It’s unusual for a BLHELI ESC to lose sync, so there might be a overheating or connection problem.
Check that you have these settings in the ESCs using the BLHELI32 Suite, particularly
- Low RPM Power Protect = OFF
- Motor Timing = Auto
You might need to use another flight controller or Arduino to set them since you dont have DSHOT set up on this Cube.
With the Cube Orange it is relatively easy to set up DSHOT using the Aux connectors and get the BLEHLI data via a serial port. This would give RPM, temperature and voltage data for each ESC.
Or use the bi-directional DSHOT firmware and just get the RPM data without sacrificing a serial port.
Let us know if you want some help.
Definitely set this
BATT_FS_CRT_ACT,1
You have 2 notch filters set up too, but not configured correctly.
Change these:
INS_HNTC2_ENABLE,0
INS_HNTCH_FREQ,56
INS_HNTCH_BW,25
INS_HNTCH_FM_RAT,0.7
INS_HNTCH_REF,0.14
INS_HNTCH_HMNCS,7
(EDIT, Dave said some this already)
There’s probably more we can help with, so start a new thread for your tuning and further discussions in that regard.