Openhab dimmer nodemcu

How to make dimmer with nodemcu?

I am looking into this myself.

When I get the time (maybe after the holidays) I will start with this:

Think ESP-01 which can be programmed with Arduino IDE. Search on the forum for Sonoff Tasmota. I use this sw with self build ESP-01 dimmers controlled by Openhab. You will find more info in forementioned thread including my example.