Troubleshooting

Temperature or Weight Sensor Connection Error

The system is configured to work with address = 0x45 for the temperature sensor (DFRobot HX711) and address = 0x48 for the weight sensor (CQRobot SHT31). If you are using different models or if the devices are not recognized, follow these steps to verify that the addresses are correct:

  1. Check that the devices are correctly connected to the raspberry.

  2. Install the detection tools:

sudo apt-get install -y i2c-tools

  1. Run the tools:

i2cdetect -y 1

  1. Change the addresses in the python code by modifying the corresponding settings in village/settings.py (extra_settings).




Wrong numpy version

If you get an error about an incompatible NumPy version, it may be because installing another package that depends on NumPy automatically pulled NumPy 2 via pip. If NumPy 2 was installed by mistake, you can remove it with:

pip uninstall numpy

This removes only the pip-installed version (NumPy 2), while keeping the system version (NumPy 1) that was installed via apt. Next, run:

pip uninstall package-name

to remove the package that caused NumPy 2 to be installed. Then install a specific version of that package that is compatible with NumPy 1, for example:

pip install package-name==<version>