Experiments with Low Voltage Labs Traffic Lights on Raspberry Pi with Rust

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.

Attaching the Traffic Lights

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

Install Rust

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

Clone, Compile and Run the Code

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.