I'm a bit puzzled. As far as I can understand from the wikipedia page the integrative gain amplifies the oscillations and the derivative gain is the one that is smoothing the oscillations. Am I getting this wrong ?
wimvb wrote: PID control loops can start oscillating if the parameters aren't set properly. You wouldn't want that to happen to your mount. That's why derivative gain in lin_guider wasn't used. But if I remember correctly, integrating gain is used.
I've contacted support of astroshop.eu, the guys I bought the camera from, and they are saying Touptek updates their SDK frequently and that the last update was on 2020-02-24. Is that true ?
Bart wrote: Proportional, Integral and Derivative (PID) are the gain factors that are used in the commonly used PID control loop.
Hmm. Very interesting ! Especially this one:
I played around with "Control Parameters"/"Proportional Gain" and, indeed, it makes auto-guiding work as intended. It isn't yet perfect, but there are other factors at play (my guiding hardware is DIY and needs improvement). Anyway, on a longer exposure I can already see the difference.
Many thanks to all of you, guys, for your help !
By the way, never heard about proportional gain before. Is there any documentation that explains what it does ?
First evening with clear sky. Here is the log file.
The only resolution available for this camera is 1920x1080. The only thing that I could do is to increase binning.
On the other hand, if this is a known USB issue with Toupcam and all touptek based cameras on Raspberry PI, may I ask you if this a software problem (potentially solvable) or is a hardware one and there is no possible solution ?