Tutorial SMC3 Arduino 3DOF Motor Driver and Windows Utilities

I have not yet started to play with SMC3. After my first MSFS helicopter ride on my DR-P3, I realized that the backlash and cogging was totally unacceptable. So of course I began modding it. I hope to be done within the next couple of weeks. I read that there is a manual for SCM3 but haven't looked for it yet. I may find some time to play with it this week to get an idea of what all the settings are. I get the right hand column controls the elements of the movement graph but have no idea what the other settings are. I just fly helicopters, ultralights, and small GA aircraft. So it's critical that it be smooth, but also sensitive to small nuanced movements. Is it possible that this isn't the right software to meet my needs?

@Joe Cortexian
Thank you for your work.Does your post refer to the PID implementation of the original SMC3 or to my implementation?

@noorbeast

Yes, also thank you for your suggestions. Also, sorry for not answering.

You are correct in that the square wave response of my PI regulator setup shows overshoot. On the other hand, with the "motion" waveform there is no overshoot.
I've tried various combinations of Kp and Ki and, while I found combinations with less or no overshoot with the square wave, they also followed the "motion" waveform with much more lag.

I use my rig playing flight simulator games in VR, so the "motion" waveform is pretty close to my real application, while a square wave is way different. Also, I consider low lag as quite important, especially in VR. For those two reasons I stick to a regulator configuration that overshoots a little when facing a square wave.

After all, having a fast regulator without overshoot is something like the holy grail of regulators. From my experience, in order to even hope to achieve something like this, a full fledged PID regulator, with well adjusted D component, and good, low lag filtering of the input, would be required. The filtering part is currently missing. Maybe something like a gliding, weighted average kind of thing. But honestly, I don't see myself implementing that. There's other stuff I'd like to do that promises more fun or improvement.

About the Max Limits: Yes, I set a bad example setting max limits to 0 here. I have non-zero values for my other 2 motors, but for some reason the motor I used for those screenshots irregularly, but repeatedly, crossed the max limit and was then shut off by SMC3 mid game. Quite immersion breaking and quite a hassle to resolve each time. The clipping limits are the same for all my motors and I didn't want to let them clip sooner. So I reduced Max Limits for the motor that kept turning off. It "solved" the issue without creating new ones, so I run with it. I know it's kind of risky and nothing to recommend. I know I should have looked for the real reasons the motor crossed the max limits. But meanwhile, this "solution" has reached the "if it works, don't touch it" stage.