Hi Ayush,
Let me explain in brief…!!
In my project I had used one energy meter available in market. That meter was giving outout on I2C protocol. To measure
unit consumed by laod, we have to read count value on I2C protocol.
This meter will have 6 pins..
2 pins for input AC supply
2 pins for LOAD connection
2 pins for I2C..
In actual, 30000 gives 1 unit. By knowilng the pulse value, we can know unit consumption…
This is not as easy as we need many things in addition like isolation, snubber protection etc…!!
Start working on it and keep posting your problems…!!