Low output sent to M4 propeller.

Discussions about quadcopters/multi-rotors
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hamakko
Beginner
Posts: 2
Joined: Tue Sep 15, 2020 1:02 am

Low output sent to M4 propeller.

Post by hamakko »

I'm using a ps4 controller to fly crazyflie2.1.
I used to be able to fly perfectly.
However, from a month ago, the output sent to the M4 propeller suddenly decreased, and I could not fly it.
I tried replacing the motor, replacing the propeller, and multiple aircraft, but there was no effect. I can't fly it.
Probably not due to hardware...
Curiously, the output sent to the M3 propeller is weak when using a Mac computer. (Windows PCs have weak output sent to M4.)
I shouldn't have changed anything from when I was flying perfectly.

Please help. Thank you!
tobias
Bitcraze
Posts: 2037
Joined: Mon Jan 28, 2013 7:17 pm
Location: Sweden

Re: Low output sent to M4 propeller.

Post by tobias »

If it is the same on multiple CF2.1 then I would guess it is something with the control signal. Could it be something with the controller, that is does not read around zero when the sticks are centered?
hamakko
Beginner
Posts: 2
Joined: Tue Sep 15, 2020 1:02 am

Re: Low output sent to M4 propeller.

Post by hamakko »

The position of the coordinates can be read. I tried multiple PS4 controllers. The button arrangement was also reviewed. But it didn't work. 
Some of the inputs that should come to M4 are in M2. M2 propeller rotation is strong.
tobias
Bitcraze
Posts: 2037
Joined: Mon Jan 28, 2013 7:17 pm
Location: Sweden

Re: Low output sent to M4 propeller.

Post by tobias »

There are some parameters you can sett to enable direct control of the motor drivers. Check parameter group motorPowerSet. Then set a value between 0-65535 for the motors m1-m4. By setting enable to 1 it will activate the direct control. This way you should be able to check that the motors are outputting roughly the same values.

Another thing you could try is the mobile client and check the behavior to rule out the controllers.
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