Quote Originally Posted by OnYourWifi View Post
Has anyone been able to successfully control an MCP35X with the PWM fan channel? The RPMs seem to be read fine, but no matter what settings I tweak in the aquasuite software I get either full power, or no flow. Sometimes the state is random. I've had the pump stop on me twice while tweaking settings that should not have turned the pump down to 0 RPM. Both times I had to switch the fan 4 port to RPM control (instead of PWM) to get the pump to start back up again. I could then set it back to PWM and the pump kept going, but again, still no way to reliably control the pump's speed.
Havn't tried yet, but I will. Perhaps it needs another ground run to the fan output or something.