Let's look at how to control the Raspberry Pi's GPIO pins using the Rust programming language, and the Low Voltage Labs traffic light LEDs.

For a complete description of how this code works, and a shopping list of things you'll need to make it run on a Raspberry Pi, check out the article on my website... TODO LINK TO FULL ARTICLE

We'll also use the rust_gpiozero crate to control the state of the GPIO pins.

Attach the traffic lights so that they are connected to GPIO 9, 10, 11 (Broadcom/BCM pin numbering).

Installing Rust also installs Cargo, a build system and package manager for Rust projects.

Follow the installation process here, which at the time of writing looks like this:

curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh

First, clone this repository:

$ git clone https://github.com/simonprickett/rustpitrafficlights.git

Then cd into the rustpitrafficlights folder and run the code:

$ cd rustpitrafficlights
$ cargo run

If all is well and the traffic lights are connected correctly, they should start to display the UK traffic light sequence (red, red & yellow, green, yellow, red). Exit the program by pressing Ctrl+C.

If you don't see any lights, make sure that your traffic lights are connected to the expected GPIO pins.