Why Arduino IDE 2 shows an empty Tools → Port menu, how USB-serial chips and cables actually work, and a Windows-first path through Device Manager, CH340/CP210x/FTDI drivers, ESP boot modes, and port conflicts.
Download the real Arduino IDE 2 for Windows 11, choose MSI vs EXE vs ZIP, get past SmartScreen and USB drivers, finish the first-launch core download, and confirm Blink can compile.
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.
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