Hi, I got the following situation:
I am setting up a new copter, with Matek H743-slim, and Speedy Bee 4 x 1 60 A. When I started setting it up, I uploaded BlueJay, but ESC number 3 failed several times with uploading, but in the end it went through. Then, I started doing motor tests from MP, and the Motor ESC 3 was turning much slower, and was consuming about 3 - 4 times more current than the other ones (like 2 A at 50 % throttle, versus 0.6 A ther others), and it was heating up much more.
So I though that SpeedyBee was the culprit, ordered another ESC, and now I have restarted the process.
However, on the first upload of Bluejay, the ESC number 3 stopped the flashing again, but on the second flash, it went through. Then I started with motor tests, and initially it seemed OK, but at higher throttle setting, like 70 %, ESC 3 motor started to feel warmer then the other ones, much less than with the first ESC, but still clearly warmer.
So, my conclusion is that it is not the ESCs which are the culprits, but either the Matek or some setting in ardupilot, which I doubt.
So my questions are:
- Did someone had similar issue and how to solve it?
- I am thinking of reassigning the servo output, like using Servo 5
Now I have:
Servo 1 Motor 3
Servo 2 Motor 1
Servo 3 Motor 2
Servo 4 Motor 4
the remainder empty
Plan to do:
Servo 1 Motor 3
Servo 2 Motor 1
Servo 3 Disabled.
Servo 4 Motor 4
Servo 5 Motor 2
the remainder empty
- If it works, do you think it safe? I really do not understand what could cause such a behaviour. If it were a cable, I would expect it either to work or not, and also I do not understand why it is heating up the motor. I am not sure if DShot could cause this, and wheter I should try normal PWM (I suspect if that is a communication issue, PWM is more robust than Dshot).
It occured to me that the motor could be damaged, but since there were problems with flashing, I think that is extremely remote possibility, i.e. the problem is in the Matek FC, or very remotely in the arducoper.