Live Temperature Data Recorder

This project listens to meteorological station radio signals, decodes them and records the data in history/. Data from current day are updated every update interval and saved in temp.out.

Prerequisites

1. This program makes use of the universal radio signal decoder rtl-433 (https://github.com/merbanan/rtl_433). Currently supported are Realtek RTL2832 based DVB dongles.
2. Decoded data are processed via the Python script temp_live.py.
3. The Python script makes use of the non-standard library pysolar (https://pysolar.readthedocs.io/en/latest/) to calculate the position of the Sun.

Runing the pipeline

1. Modify your Python path in run.sh.
2. Make sure you change permissions of run.sh to make it executable.
3. Run run.sh.

Notes and modifications

1. run.sh essentially runs two infinite while-loops: the rtl-433 receiver and decoder, and the temp_live.py script for plotting and saving. These processes detatch from the running terminal and so can only be killed via their PID, or with killall python.
2. If your weather station's signals adhere to a different protocol than AlectoV1 Weather Sensor, you need to swap the -R argument in run.sh with your device's working protocol, which you can find in rtl-433's repository. In my case, I have added -R -53 to prevent interfering signals from a soil moisture meter sending data in the same frequency.
3. For the signal updates, you need to change the hard-coded signal_every variable in temp_live.py to your station's updating interval.
4. For the position of the Sun you need to change the hard-coded goegraphical coordinates in temp_live.py (37.9, 23.9) to your local ones.

Credits

If you make use of this project (or part of it) please cite the link to this repository.