What is a Raspberry Pi, and what can you build with it
A Raspberry Pi is a small but complete computer. Unlike an Arduino, which runs one program on a microcontroller, a Pi runs a full operating system (usually Linux), can connect a screen, keyboard, camera and network, and runs real software like Python, OpenCV and AI models.
What makes it special
- It is a real computer: multitasking, file system, internet, USB devices.
- Camera support: it can capture and process video, which is why it powers vision-based robots.
- Runs Python: the most popular language for AI and quick prototyping.
- Enough power for AI: especially with an add-on accelerator, it can run neural networks on-device.
Pi vs Arduino, in one line
Arduino is a reliable muscle for real-time sensor and motor work. A Pi is a brain for vision, decision-making and heavy computation. Many robots use both: the Pi thinks, the Arduino acts. We compare them fully in Pi vs Arduino.
Getting started
- Flash an operating system onto a microSD card (the official Raspberry Pi Imager makes this easy).
- Boot, connect to Wi-Fi, and open a terminal.
- Write Python: read a sensor, capture an image, control a pin.
What people build
Retro game consoles, home servers, weather stations, security cameras, and of course robots. For a robot, the Pi typically handles the camera and the strategy, sending simple commands to the motors. Next, learn how the Pi controls hardware through its GPIO pins.