Energy Meter PIN Unlock

script to unlock a digital energy meter.
It shall only be used for meters not registered or administrated by your "Messstellenbetreiber"!

It runs on a Raspberry Pi 4 with Ubuntu 22.04. Server installed. \

Requirements

python3.10 or newer
lgpio (sudo apt install python3-lgpio)
For RaspberryOS, the library for GPIO shall be exchanged to gpiozero.

HW Interface

A LED flashlight controlled via Raspberry Pi GPIO is required. THe hardware is a simple (preferably white LED (--|>|--) with a suitable resistor (---====--- in my case 180Ohm) in series:
GPIO °---|>|----====----°GND

How to use Energy Meter PIN Unlock

Once everything is set up and the flashlight can be controlled via the GPIO, make copy of the config-example.pyfile and adjust the PIN range to your needs. Depending on the meter, you might need to adjust the timings as well.

How to use analyze the Energy Meter PIN Unlock

with the Jupyter Notebook analysis.ipynb, the log file is converted into a pandas dataframe and visualized.

Backlog / unsolved Issues

the script can take up to several days. Currently all relevant information is logged in thePIN_unlock.log file. To debug and print the output directly to your terminal session, the script is to be modified. This was implemented as the script stops, once ssh or the terminal session is closed
use nohup python3 -u unlock_pin.py instead\

To figure out the process ID, use the following command:\ ps ax | grep unlock_pin.py
and kill the process with
kill -9 {{id got after }} &
More information on this topic is available on:
https://www.geeksforgeeks.org/running-python-program-in-the-background/

License

You can check out the full license in the LICENSE.txt

This project is licensed under the terms of the MIT license.