Penta Sata Hat Top Fan not working as it should on Raspi 5

[michael]

… You might have noticed as well that sometimes suddenly the fan starts spinnig for a fraction of a second without any reason. …

maybe that could help

Stumbling fan if playing video on Plex in a converted quality (Software PWM issue)

Disclaimer: This demonstrates only a temporary workaround, waiting for hardware PWM on Pi5 gets ready The issue is that on expected fanless operation, the fan stumbles and spins slowly when Plex plays a reduced quality video that requires conversion. You might have noticed as well that sometimes suddenly the fan starts spinnig for a fraction of a second without any reason. I found a way to workaround it by forcing the software PWM to 0 for the case of zero duty. For that I modified the tr fu…