Hello, I imagine by now this has been covered very many times but I can not seem to find the information i’am looking for. I would like to dim my 120 VAC light bulbs with a esp8266 in openhab. I’am very new to this but from what I have gathered I can either use a zero cross circuit or some sort of a MOSFET but unfortunately all the schematics I find are for 230 VAC main voltage. Due to my limited knowledge and understanding i’am unsure what changes would need to be made ( if any ) for the different voltage’s. If any one can provide any help or point me in the right direction that would be greatly appreciated.
I doubt very much you will get many answers related to making hardware, but have a good look here.
This guy has some very good projects and I think he has covered what you want.
When it comes to the using your hardware with Openhab then you will probably get more answers or advice.