Using CNY70 sensor connected to ESP8266 board to read electricity usage from a simple analog electromechanical electricity meter and send the data to domoticz server.
This project emerged from my engineering thesis in which I measured efficiency of ground source heat pump. It required measuring electricity usage from a classic analog electromechanical electricity meter. Back then I used USB webcam and adapted image processing software running on Raspberry Pi. As I became more interested in home automation I looked at a more reliable solution to track electricity usage. This is what I came up with.
- ESP8266
- CNY70 and 2 LEDs
- Cardboard, hot glue and black tape
