This is a Rust program that controls a DIY weather clock powered by Raspberry PI and PCF8574 controller.
The PI uses its I2C bus to talk to the PCF8574 controller which is attached to the LCD display.
The following dependencies will enable you to cross-compile the binary for Raspberry PI:
- Rust:
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh - cross
cargo install cross - Docker
This instruction manual comes with zero warranty. If you don't agree, please don't proceed. It is strongly recommended to read Testing the LCD display before proceeding. This installation manual also isn't very detailed. Feel free to ask questions or contribute if you understand how to make this work.
- Run
cross build --release --target armv7-unknown-linux-musleabihf -v - Copy
target/armv7-unknown-linux-musleabihf/release/weather-clockto/usr/local/bin/weather-clockon the Raspberry PI - Install raspbian on the Raspberry PI
- Connect the PCF8574 controller to the Raspberry PI via I2C bus
- Run a python script from the site above to make sure your display works properly. Protip: make sure to adjust contrast if you can't see anything on the display.
- Create a configuration file based on
weather-clock.example.toml - Copy your configuration file to
/etc/weather-clock.tomlon the Raspberry PI - Copy
weather-clock.serviceto /etc/systemd/system/weather-clock.service` on the Raspberry PI - Run
sudo systemctl daemon-reloadon Rasberry PI - Run
sudo systemctl enable --now weather-clockon Rasberry PI
After all this, the weather clock should start automatically each time your Raspberry PI starts.