Mqtt Switch with Nodemcu
Posted: Sat Jun 22, 2019 8:48 amHi..i am a newbie and a mechanical engineer who is trying to learn some IOT. i want to write a code for my nodemcu V2. In the hardware setup I want to connect a normally open rocker switch between Pin 2 and ground of the nodemcu. I wish to write a code to publish a message when the switch is closed( enabled) and when the switch is opened( disabled). I know its very simple but i tried many ways but not suceeded in exactly what i wish. its very simple, please provide me an example of this setup.... 
My mqtt broker is mosquito which has both username and password enabled which is running in my RPi 3..please help
My mqtt broker is mosquito which has both username and password enabled which is running in my RPi 3..please help