76 lines
1.6 KiB
Markdown
76 lines
1.6 KiB
Markdown
# powermeter
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A simple Pyhton script to mesaure you electricity consumption using the LED on a electricity meter and a digital light sensor.
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You either can use InfluxDB to store the data or a built in Flask application.
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## Hardware setup
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- Raspberry Pi
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- Digital light sensor like this: https://www.berrybase.de/lichtsensor-mit-digitalem-ausgang
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Connect the light sensor to your Pi:
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```
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VCC: 5V
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DATA: GPIO 27
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GND: GND
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```
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## Software setup
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- Copy the `.env.example` to `/etc/powermeter-environment` and change it to your needs.
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- Acivate at least InfluxDB (which I would recommend) or Flask output.
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Clone this repository, configure `.env` file, setup systemd service:
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```
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git clone https://code.f2n.me/finn/powermeter.git
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cd powermeter
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cp .env.example /etc/powermeter-environment
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cp powermeter.service /etc/systemd/system/powermeter.service
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systemctl enable powermeter
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systemctl start powermeter
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```
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For Flask app also to the following steps:
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```
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virtualenv .
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pip install -r requirements.txt
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cp apache2_sample_config.conf /etc/apache2/sites-available/powermeter.conf # modifiy to fit your needs
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a2ensite powermeter
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systemctl reload apache2
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```
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## Developing (Flask app)
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For developing run this (you need to create database and user first):
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```
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export FLASK_ENV=development
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export APP_DEVELOPMENT_DATABASE_URI=postgres://username:passwort@hostname/database
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flask run
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```
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## Future thoughts
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- build container for flask app
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- Microcontroller edition
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- and more
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## Screenshots
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Node-RED usage example:
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Grafana Dashboard example (InfluxDB datasource):
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