Just wanted to let you know that the cheap MagicHome
(Just search eBay for RGB wifi, and find one that looks like mine)
RGB controller can be flashed with Tasmota.
When flashed you can control it using mqtt from Pimatic.
The only thing is that the settings are different on some of the devices than stated on the Tasmota wiki page. Mine is based on the ESP8285 and have to have the following settings to work.
And SetOption15 1 in the console.
Now I can control the RGB light strip from Pimatic frontend 😁