My Hexacopter (Matek F405 miniTE, arducopter 4.3.7, dual Mamba 4-in-1 ESCs running DJI Phantom 2312 motors) developed an intermittent thrust loss issue:
Takes off fine. After couple of minutes of flying, forward-right motor STOPS. Being hexacopter, it stays in the air on 5 motors, controllable, so I can get it to land gently.
After landing and disarming, if I re-arm, all six motors will start, i can take off and fly again until the same motor stops again.
Checked/resoldered all wiring to that motor.
and you can disable or lower the ESCs voltage cut-out.
If that bad behaviour continues I think you should have a close examination of the ground wires and signal wires between the ESCs and flight controller.
I am wondering why you dont use DSHOT with a few simple parameter changes.
and set up a serial port with the BLHELI telemetry data SERIALx_PROTOCOL,16
For BLHELI telemetry: which serial I meant to use ? this frame has a wifi telemetry board, but I don’t use it in flight because of the poor range - do I set that serial port ? I read the telemetry data on FPV OSD.
I thought may have found a suspect: the control wire in the ribbon cable between FC and ESC that corresponds the stopping motor, i found to be worn to just couple of strands. Fixed the wire. One flight was ok, second flight - same problem, same motor shut down.
Drives me mad.
a dud FC ???
(also, this forum IS broken, since I can’t upload a LOG file (not BIN) 1.4 mb size).
here is the external link to 600k BIN file log_3_UnknownDate
Good work in getting the DSHOT going RCOut: DS600:1-8 PWM:9-12
The BLHELI telemetry wire is just about ESC data that gets logged, and the RPM data can feed into the Harmonic Notch Filter. The logged data alone is very useful in cases like this.
Motor6 (RCout5) is hardly doing anything, is that the motor that seems to cut out?
Is the copter well balanced?
You could try moving the motor wires and motor signal wire to a spare ESC.
Yeah those little cables are pretty cheap (wires and connector housings) and they are not a high-reliability connector. It would be nice if we could get the 4in1 ESCs with JST-GH or click-mate connectors.