Hardware

For pin layout of the RPI pico refer to: https://www.raspberrypi.com/documentation/microcontrollers/raspberry-pi-pico.html#pinout-and-design-files

One side of the breadboard will be used for the leds, the other side for the buttons.

Hardware required (Provided):

• 1 Raspberry Pi Pico
• 1 USB Micro Cable
• 1 Breadboard
• 4x 220 Ohm resistor
• 1x Red led
• 1x Green led
• 1x Blue led
• 1x Yellow led
• 4x Push button
• 10 M-F jumper
• 4x M-M jumper

The raspberry pi pico looks like this:

Note: The pin numbers above differ from the gpio numbers. We will be referring to the pin numbers below.

Leds

We will use one side of the breadboard for the leds, and the other side for the buttons. These sides will only interact via the raspberry pi.

• Connect pin 16,17,19,20 to the positive side of the red,green,blue,yellow LEDs respectively.
• Connect the negative side of the leds to the center rail using the resistors.
• Connect center rail to ground at pin 18 ground (black wire on the picture).
• Your hardware should now look like this:

Buttons

We will now connect the buttons, this will be a little messy because of all the jumpers involved.

• Place the 4 buttons on the breadboard as shown on the image.
• Using the M-M jumper wires, connect one side of the button to the center rail.
• Connect the center rail to pin 23 ground (purple wire on the picture).
• Your hardware should now look like this:

• Connect pins 25,24,22,21 to the other side of the buttons next to the red,green,blue,yellow leds respectively.
• The final hardware should look like this:

Software

Installation:

• Install VS code with the rust-analyzer plugin: https://code.visualstudio.com/
• Install rustup: https://rustup.rs/
• Run: cargo install elf2uf2-rs

Running:

• Unplug rpi
• Hold the bootsel button while plugging in the usb cable
• Run: cargo run