I’m adding rolling shutters to my roof windows and I was looking into how to integrate them into my HA installation.
Using the official route, with Velux control hardware that has a HA component already made was a bit too expensive for my taste at the tune of ~ 300€ for controlling two windows.
So I used a 35€ Sonoff 4CH Pro and a 15€ power supply to control them with HA.
Here is the writeup with all the details and instructions: https://github.com/reefab/homeassistant-velux
It works really well and I’m really happy so far, especially considering the money saved.
It could be applicable to other brands of electric rolling shutters/blinds but of course I could only test with what I had on hand.