Sorry for all the? But need help with slow motor/ESC - RC Groups
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Mar 26, 2012, 05:55 PM
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Denominator's Avatar

Sorry for all the? But need help with slow motor/ESC

I'm done building my quadcopter.Updated to KKQuadControllerV4_7_X before I did any intial setup of the ESC and now I can't find any info to how I set the ESC's. 3 of my motors are in sync, but one only turn on when I get past 50-60% on the throttle stick. Do I need to change setup for that ESC or is the motor or ESC broken?

The other motors starts to spinn if I only give it small amount of throttle but not the rear right motor.
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Mar 26, 2012, 06:13 PM
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Most likely you will need to reflash the firmware of your KK controller to fix the problem. I believe there was a bug in some versions that could cause the 4th motor to lag behind on throttle inputs.

I had the same problem and fixed it by reflashing my board.

Look at this post;

for the version of the firmware that works for me.

Edit - there's a whole thread on the problem here;
Mar 26, 2012, 06:24 PM
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Denominator's Avatar
That is the version of the firmware that I flashed it to. Strange that it works for you but not for me :/
Mar 26, 2012, 07:06 PM
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Denominator's Avatar
As I read the threads I noticed someone write that the yaw pot was reverced.
Turned it the other way and followed the setup esc guide and now it works perfectly!

Thank you!

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