A reference guide to every current Arduino board, shield and kit, with photos, pinouts, features and where to buy, plus retired boards still found in old tutorials.
Not sure which Arduino board to buy? This guide covers every board family — Uno, Nano, Mega, MKR, Portenta — with specs, pinouts, power tips, and project-matching advice.
What Arduino actually is, why it took over as the default platform for learning electronics, and a first look at the five boards you'll see most in this series, from the classic Uno to the Leonardo.
