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Omnik Data Logger

===== Omnik Data Logger is a small script for uploading data from a Omniksol Solar inverter, equipped with a wifi module, to a database and/or to PVoutput.org. For now only wifi kits with a s/n starting with 602 are supported

This script is designed to be run as a cronjob every minute. Every time this script is run the data from the inverter will be send to the database. And with a five minute interval the data will also be uploaded to PVoutput.org as a live status.

Installation and Setup

  • Install Python
  • To use your local weather install yweather pip install yweather, and update your config with city and country
  • Git clone the source with git clone https://github.com/Woutrrr/Omnik-Data-Logger.git
  • Copy the config-org.cfg to config.cfg
  • Change the settings in config.cfg
  • Test your settings with python LiveStats.py, when succesfull you should see data from your inverter
  • Run the script with python OmnikExport.py or better set a scheduled task or cronjob.

Smart meter (Slimme meter)

To upload your current usage to pvoutput, there must be a file to read in which this data can be found In this file there must by a string like this: actual_usage 120.0 Which means current usage is 120W See the example is the Resources folder slimme_meter.txt

Example cronjob

With these options this will execute the script every minute.

* * * * * /usr/bin/python /home/username/Omnik-Data-Logger/OmnikExport.py

Why copy config-org.cfg, can't I edit it directly?

Yes you can edit config-org.cfg directly. However if you want to update the script your settings will be overwritten with the default values. By creating config.cfg, you can preserve your settings when upgrading.

TODO

  • Decode more data from the inverter response
  • Error handling
  • Modular upload system (ie. create a system for easy adding additional uploader like mysql, pvoutput)