This question is a follow on from my previous question, Overheating/Jamming MG996 servo.
I have recently purchased my first ever servo, a cheap unbranded Chinese MG996R servo, for £3.20 on eBay.
After mounting the servo horn and the bracket, I realised that I had not mounted the horn in a tout a fait 0° orientation, rather the angle between the bracket and the servo side was approximately 20°. However, after switching the servo on and off a couple of times, with each time allowing the servo to perform, say, about 10 sweeps each time, I quickly noted that the servo’s extreme positions were changing over time, so that the initial extremes and then the extremes after about 5 on and off cycles, had changed by about 15°, so that now, 0° and 180° the bracket is now parallel with the body of the servo.
I was quite surprised at this, as I had assumed that the 0° and 180° positions would be fixed, and not change over time, or vary each time that it was switched on and off.
Seeing as there should be a stop peg on the gear connected to the potentiometer inside, how is this even possible?