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Learn Raspberry Pi

Turn a credit-card-sized computer into a server, gadget or robot brain.

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The Raspberry Pi is a small, low-cost single-board computer that runs Linux, usually Raspberry Pi OS, a version of Debian. It has USB, HDMI, networking and a row of GPIO pins, so it works both as a tiny desktop and as a controller for LEDs, sensors, cameras and motors. People use it to learn the Linux command line and Python, run home servers and network ad blockers, and build robots or retro game consoles. Learnr turns your prompt into a personalized Raspberry Pi course and teaches it through short, interactive lessons that match your project goals.

How to learn Raspberry Pi, step by step

Set up the Pi properly from the start. Use Raspberry Pi Imager to write Raspberry Pi OS to a microSD card, and use its settings to set a username, Wi-Fi and SSH before first boot. Use the official or a properly rated power supply, since undervoltage causes random crashes.
Learn the Linux basics on your Pi. Practice ls, cd, nano, sudo, apt update and apt install, and file permissions. Connect with ssh from your main computer so the Pi can run without a monitor, and learn to shut down cleanly with sudo shutdown now to avoid corrupting the card.
Write Python that does something real. Start with scripts that read a file, call a web API or log the CPU temperature with vcgencmd measure_temp. Learn to run a script on a schedule with cron or at boot with a systemd service.
Wire GPIO safely. The GPIO pins use 3.3 volt logic and are not 5 volt tolerant, so never feed 5V signals into them. Power down before wiring, use resistors with LEDs, avoid shorting pins together, and keep mains voltage out of every project.
Control hardware with gpiozero. Use the gpiozero library to blink an LED, react to a button and read a motion sensor in a few lines. Then add an I2C sensor or the camera module with the Picamera2 library to build a doorbell camera or weather logger.
Run a project that stays on. Install Pi-hole for network ad blocking, a small Flask website or a media server, then make it start automatically and survive reboots. Short daily Learnr lessons help Linux commands and Python become second nature along the way.

What you'll learn

Flash an OS with Raspberry Pi Imager and set up the Pi headless over SSH
Manage files, packages and services from the Linux command line
Control LEDs, buttons and sensors on GPIO pins with Python
Use the camera module and common add-on boards
Run a small always-on service such as a web server or network ad blocker

What's inside your Raspberry Pi course

A sample path Learnr builds for Raspberry Pi. Your real course adapts to your goal and level.

1. Choosing a model, power and installing the OS
2. Linux command line, apt and remote access with SSH
3. Python programming on the Pi
4. GPIO pins, breadboard circuits and electrical safety
5. Sensors, cameras and the I2C and SPI buses
6. Home server projects, services and automation

How long does it take to learn Raspberry Pi?

Setting up the Pi and running simple GPIO projects takes a few weekends. Becoming comfortable with Linux administration, Python scripts and reliable always-on services usually takes 1 to 3 months at a few hours a week, faster if you already know Linux or Python.

What you need before you start

No experience needed. You need a Raspberry Pi, a suitable power supply, a microSD card and either a monitor and keyboard or another computer on the same network for SSH. Basic Python helps a lot.

Common mistakes to avoid

Using a weak phone charger and then chasing random freezes and corrupted SD cards. Check for undervoltage warnings and use a supply rated for your model.
Pulling the power cable instead of shutting down, which can corrupt the SD card. Shut down from the command line and keep a backup image of a working setup.
Connecting 5 volt sensors directly to GPIO pins. Use 3.3V parts, a voltage divider or a level shifter to protect the board.

How Learnr builds your course

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Raspberry Pi questions, answered

Which Raspberry Pi should I buy to learn?

Any recent full-size model, such as a Raspberry Pi 4 or 5, handles desktop use, Python and server projects. The Raspberry Pi Pico is a different product, a microcontroller board without Linux, better suited to embedded projects.

What programming language is used on a Raspberry Pi?

Python is the most common, thanks to libraries like gpiozero and Picamera2, but because the Pi runs Linux you can use almost any language, including C, JavaScript with Node.js, Go and Bash scripts.