Now that our cloud application is ready to receive data let's prepare raspberry pi 2
sending water level data on our dashboard application 3
no changes in the connection of ultrasonic sensor , trig pin is connected to gpio2 4
and echo pin is with gpio 3 and this time 5
will code in python 6
as we already measured ultasonic senor using python 7
in RPi, so the majority of code is 8
what you know already