G'day from Australia! Similar use cases to other reviewers, this controller is installed within my rack, powering a couple of Notcuas. Looks great, configurations and integration with Home Assistant were very easy to set up. Will most likely buy a couple more of these down the line. Would recommend.
Surprised something like this doesn't already exist since wanting to control fans via Home Assistant seems like a pretty common use case. Used the fan controller to control fans within my server rack which badly needing some cooling and this works perfectly. Documentation could have been more comprehensive - for some reason the api was disabled within the Rev3 ESPHome yaml config which means I couldn't connect to it from Home Assistant out of the box and there was no documentation about how to resolve this so it took a big of digging to work out how to flash a new firmware OTA with the api enabled. Overall very well put together, would recommend.
Response from zeroflow's | July 13, 2025
Hi Scott,
Great to hear it serves you well. This exact usecase is the reason why I built this product in the first place.
Thank you for bringing this up, the missing api config is indeed an oversight when creating the example configuration. As you also noted, the documentation indeed is in some dire need of improvement, which will happen soon.
If you have any other questions, please don't hesitate to ask.