Category: Qtvcp
Your remedy is working as it should and now i can set correct value, thank You. But I forgotten to tell that linearity of voltage 0-10V is terrible, I used scale for make it "more linear" and that works like a charm. Before on raspberry pi 4 i didn't noticed that strange behavior, it was simple as that to calculate resolution etc, but I also didn't use qtdragon display, when I switched to rpi5 then I noticed those strange things.
Now I bend it little by cheat real max rpm so its almost fit, but I don't like doing things in a slapdash way.
Below table how analog output voltage works for me...
value [RPM] / VFD frequency [Hz] / Uout [V] .
3000 30 0.8
6000 93 2.36
12000 220 5.6
18000 350 8.6
20000 396 9.6
21000 400 9.7
