step 1

create firebase database https://console.firebase.google.com then

step 2

for Arduino : Automation.ino

I hope You have already installed node mcu driver and board library

plz download below libary before start

https://github.com/firebase/firebase-arduino

https://github.com/bblanchon/ArduinoJson

step 3

its simple wiring picture . hookup your wires

for Python : Automation.py

control firebase database using python

Simple code for firebase realtime database operation using python

before start you have to install two library in python using pip

sudo pip install requests==1.1.0

sudo pip install python-firebase

then run your script $ python Automation.py

I have skiped nodemcu board installation, python installation, board driver installation , pip installation etc.