Thanks, that’s a lot clearer. I’m not very experienced with this kind of project (so may be wrong with my advice), but here are my initial thoughts.
I think you need to sniff how the controller is controlling the motors.
You could cut a spare RJ45 cord, and start with a multimeter and check voltages on the wires. If you get some RJ45 breakouts this would be easier.
https://a.aliexpress.com/_mtNK09G
I’m not sure how safe tinkering with live 24v is. I’ve only fiddled with 5v.
My hunches would be:
- It’s just acting as relay and turning power on/off or
- If it’s got some electronics on the damper it might be using UART.
If it’s looking like the latter you could start investigating a similar approach to my project below.
You could always try posting/linking to this over on the ESPHome Discord. I had amazing help from ssieb over there for a vaguely similar project.
I suspect you’re going to have to do a fair bit of research and testing for this.
Here’s a very vaguely similar project I’m working on that may be of some use. It’s similar in the sense that there is basically a controller which is controlling two motors.