the best way is to create a binary button as an actuator powered by your ac wall because binary button needs less current than you put with relay and button actuator. then create suitable case for your binary button . and put all of your light connection to ethernet relay like eth8020.

it depend on your physical switch, if it a pushbutton, as long as I know, you can't do that, you have to modified the older style switch and put some trigger there

you can build more than 1 gateway for that, but rather than mqtt. I think it's better to use ethernet or serial gateway because mqtt gateway has lot of problem, I tried it for months. You can forward mqtt from fhem to mosquito.

@Corvl said:

Hmm..... got an issue.

The sensor doesn't alway work .... the switch works about 8 of 10 times,

When I looked at the serial monitor I also see some fails, and that is when I connect pin2 with ground ( reed switch)..

Anyone has an idea?

send: 2-2-0-0 s=0,c=1,t=0,pt=7,l=5,st=fail:25.0
send: 2-2-0-0 s=0,c=1,t=0,pt=7,l=5,st=fail:25.1
send: 2-2-0-0 s=17,c=1,t=16,pt=2,l=2,st=fail:1
send: 2-2-0-0 s=0,c=1,t=0,pt=7,l=5,st=fail:25.2
send: 2-2-0-0 s=17,c=1,t=16,pt=2,l=2,st=fail:0
send: 2-2-0-0 s=0,c=1,t=0,pt=7,l=5,st=fail:25.3
send: 2-2-0-0 s=17,c=1,t=16,pt=2,l=2,st=fail:1
send: 2-2-255-255 s=255,c=3,t=7,pt=0,l=0,st=fail:

thanks,
Cor

try to check your radio and put 47uF capacitor between your radio vcc and ground, and try to check your bootloader also because I experienced with radio problem when I change my bootloader and crystal

oh, okay got it :)

how to upload custom bootloader?maybe you should put additional icsp port