Hi @neelam, welcome to the forum! The dimmer example should work. If you want to use only the esp8266 with wifi (no nrf/rfm or other radio), you'll also need to add gateway settings from https://www.mysensors.org/build/esp8266_gateway

Nice job, efficient and clean ! I'm tempted to buy this microscope now, so I can make your led light

@yoshida I'm not sure... Maybe

@HouseIOT Sorry to trouble you, i use a mysensors-wifi-gateway with protocol 2.1.1 , and my homeautomation is home-assistant. I can't use your dimmer in my system. After read the reference, there need to add V-percentage and V-status in the code, as a newbie , I can't do it myself. So I wondered，can you do me a favor? Thanks a lot.

Not yet ! In fact, the interrupt must be short enough and fast enough to be sure to not miss the RFM69 interrupts. The code for 8 dimmers will not be really more complicated : in fact, each time we got a zero cross, we must set a timer to zero, and then wait the good amount of milliseconds to turn on the needed outputs. So, yes, we'll have an interrupts each 10ms (each time the wave crosses the zero, to be precise !), but I think all we have to do in the interrupt handler is set the timer to zero (or to micros() ...) and then on the main loop, wait the good amount of time for each output before setting them ON. Seems simple on paper, perhaps it will not work on the chip.... In facts, my main concern is : will the RFM interrupt be short enough to not disturb the zero crossing interrupt ? Although, not yet tested the RFM : do we NEED the interrupt pin ? Can't we poll frequently the RFM?

The project does not work without neutral wire

After filding around a lot with the MySensor2.0 lib and spending my whole weekend, when I could not get things going I finally switched back to MySensors1.5.4. After that I made quick progress and my node was on network. Here is the link below of a working Dimmer node. MySensors AC 220v Dimmer with Domoticz – 01:42— S Kumar

@Samuel235 said: Just one of many ideas, the possibilties are endless. I'de always go for RGB leds over just white, allows for more customisation while able to still give you the same white as the white leds. ... unless, as in my use case, colors are not needed. I'm too stingy to pay for the unused dry powder!

@AWI I discovered it the hard way tonight. Lot of "Unknown sensor type" in my domoticz log. I have it working by declaring it as a distance, pressure etc. It's really dirty but at least for know I can track my RPMs. I guess I will try to poke around on the domoticz forums this week end to see if there is something cooking on their side. Thanks!

I've updated the docs at home-assistant.io with sketch examples. Look at the light example. https://home-assistant.io/components/light.mysensors/#example-sketch It's what I used for testing during development. It adds an RGB sensor/actuator also besides a dimmer, but you can just remove any references to rgb in the sketch. The dimmer slider will only be visible after turning on the light and clicking the entity in the gui to bring up the more info card.

This should work with Domoticz, it's what I intend to use with it. I've received the boards from China and I'm currently working on a version 2 of this board. There are some errors in the design of version 1 that I need to get out. New version will be up shortly.