I have one of these brushless motor speed controllers hooked to an old hard drive. All is working as expected but I am trying to understand what I am seeing.
Here is the output. It is pretty much the same on all three coils. I really can't get the display to sync no matter what I try with the trigger. I would expect to see straight PWM but the display is all over the place. Exactly what am I looking at? Is this some sort of feedback coming from the windings of the motor?
The common winding connector even has an stranger output.
Here is the output. It is pretty much the same on all three coils. I really can't get the display to sync no matter what I try with the trigger. I would expect to see straight PWM but the display is all over the place. Exactly what am I looking at? Is this some sort of feedback coming from the windings of the motor?
The common winding connector even has an stranger output.