The cloud electric meter is a project consisting of a 3 parts
1- A microcontroller and a current transformer (As of now, I am using the SCT-013)
2- A server to collect the data from the microcontrollers
3- A mobile phone app to display the data
The second and third (Server and application) are beyond the scope of what we are doing here, here, I will be examining all the options for a microcontroller and current transformer, With and without the cloud part.
1- The no cloud setup
The first example we will be using is the current transformer (SCT-013) with a nodeMCU ESP8266 that shows data about the current on a screen, this is the simplest setup, and is for people who are here to figure out how to connect their transformer, To do this, you will need a 16 x 2 screen, and an LCD I2C Interface Adapter.
1- Connecting the LCD to an ESP8266 (Tutorials for arduino and ESP32 are all over the internet)
2- Connecting the Current Transformer
3- The software