Comment by hxii

5 days ago

I’ve got a power station (Ugreen) with an ESP32 that I’d also love to connect to HomeAssistant, instead of their app which provides me no benefit.

This is definitely beyond my capabilities at this point but it could be interesting to go through a similar process once mentally ready.

It's not. Get a usb-serial cable. Open it up, attach that, load Tasmota firmware. Takes a little bit of fiddling to figure out which gpio goes to which relay sometimes, but once you've gotten the pattern you can upload it so others don't have to figure it out next time.