Measuring energy consumption using a pulse-output electricity meter and reading data via RTSP with OpenCV

• Running RTSP server
• Electricity Meter 😀
• Python = 3.12.3

Note: If using Adafruit IO you need to create a feed with the name energy and pulses in your Adafruit IO account.

1. Create python virtual environment named env/
2. Install Required pip packages
3. Create .env file follow .env-sample and change the value needed.
4. Run main.py

• Note: Red appears at both low and high ends of the hue spectrum so you need to get both for wide range red detections.

🔁 We need two masks for Red In the HSV (Hue, Saturation, Value) color model:

• Hue is represented as a circular value — typically from 0 to 360 degrees or 0 to 180 in OpenCV.
• Red appears at both low and high ends of the hue spectrum:
  • Red starts near 0°
  • And loops back around at ~360° , which maps to 0° again So in OpenCV, where hue values go from 0 to 179 , red spans two discontinuous regions:
• Lower red : ~[0–10] (dark reds)
• Upper red : ~[170–180] (magentas and bright reds)

Red → Orange → Yellow → Green → Blue → Purple → Magenta → Red ...
↑ ---------------------------------------------------------------- ↑
0°- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 180°

1. GO debug/ folder
2. Run the get_hsv_color.py
3. Adjust the slider to get the desired color.
4. Get the value and update it in .env