Raspberry pi Expansion Board Tutorial

Sure, here are some Raspberry Pi LED control sample codes using Python.

There are two primary ways to control LEDs on a Raspberry Pi:

Using RPi.GPIO library: This is the traditional and most common way to directly control the GPIO pins.

Using gpiozero library: This is a newer, higher-level library that simplifies common GPIO tasks, including LED control, by providing object-oriented interfaces. It's often recommended for beginners due to its simplicity.

Let's look at examples for both.

Using RPi.GPIO Library (Basic Control)
This method gives you fine-grained control over individual GPIO pins.

Requirements:

Raspberry Pi (any model)

LED

220-330 ohm resistor (current limiting for the LED)

Jumper wires

Breadboard (optional but recommended)

Wiring:

Connect the components as follows:

LED Long Leg (Anode) ↔ Resistor ↔ Raspberry Pi GPIO Pin (e.g., GPIO 17)

LED Short Leg (Cathode) ↔ Raspberry Pi GND Pin