powermeter

A simple Pyhton script to mesaure you electricity consumption using the LED on a electricity meter and a digital light sensor.

You either can use InfluxDB to store the data or a built in Flask application.

Hardware setup

• Raspberry Pi
• Digital light sensor like this: https://www.berrybase.de/lichtsensor-mit-digitalem-ausgang

Connect the light sensor to your Pi:

VCC: 5V
DATA: GPIO 27
GND: GND

Software setup

• Copy the .env.example to .env and change it to your needs.
• Acivate at least InfluxDB (which I would recommend) or Flask output.

Clone this repository and create a virtualenv within it:

git clone https://code.f2n.me/finn/powermeter.git
cd powermeter
virtualenv .
pip install -r requirements.txt

Developing (Flask app)

For developing run this (you need to create database and user first):

export FLASK_ENV=development
export APP_DEVELOPMENT_DATABASE_URI=postgres://username:passwort@hostname/database
flask run

Screenshots

Node-RED usage example:

Grafana Dashboard example (InfluxDB datasource):