I’m building a fixed-wing plane and I have trouble finishing the build because of throttle issues. The motor I’m using is EMAX GT2826/06, TBS Crossfire Nano RX for radio, ESC is REDBRICK 100A with BEC and the FC is Matek H743 v3.
I’m on 4.3.1 arduplane firmware and when I force arm the model and slowly try to move throttle up it starts acting weird. The motor can’t reach maximum thrust, even though I move the throttle all the way up. After moving past what feels like 20% of the throttle, the motor gets somewhat shaky and starts fluctuating around 20% of power. Before reaching around 20% with throttle stick, the behavior of the motor seems rather normal (linear with throttle stick) as expected. I’ve already recalibrated radio multiple times. I have also tried programming ESC with different settings without luck (refering to http://atorie-m-m.main.jp/redbrick50~200A%20manual.pdf). I can’t seem to find the culprit of this problem.
I have also tried plugging ESC with motor directly to the battery and using servo tester to reach maximum throttle and in this case, everything works perfectly.
The airspeed sensor is telling the firmware that the plane is not moving so the firmware limits the throttle because it knows there is something wrong. The test you are doing is invalid, and the results are also invalid
Then MissionPlanner probably thinks you dont have any motors configured to test.
Make sure that the motor servo output is not set to RC Passthrough or something like that.
I wouldnt mind betting that the problem is the Redbrick ESC is so old it is expecting a 5volt PWM input and the flight controller is outputting 3.3volts PWM.
I would look at getting a more modern ESC.