FanPico - OSHW Programmable PWM (PC) Fan Controller, now has initial Home Assistant support. This was done uing MQTT Discovery, so FanPico units are now easy to integrate with Home Assistant.
https://github.com/tjko/fanpico/wiki/FanPico-Home-Assistant-(MQTT-Discovery)-Support
I’m new to Home Assistant, so any feedback and improvement suggestions are very welcome.