I have been wanting a PWM controller for my Tesla cards in my workstation. Currently I open the case and manually turn up their fan speed when I’m going to use

I have been wanting a PWM controller for my Tesla cards in my workstation. Currently I open the case and manually turn up their fan speed when I’m going to use them, and turn it back down afterward. What I would like, but am not very interested in spending the time on, is a microcontroller that controls the fan speed based on messages it gets over serial from a script running on the host that tells it what speed to run based on GPU temperature. When I first set it up, I also placed thermistors that the microcontroller could use as a fallback if it doesn’t receive commands. Seems like something similar should already exist, but I haven’t been able to find anything that is a close enough fit.