Five playlists

Series

Electronics Basics

Breadboards, resistors, capacitors, timers and displays — the parts every project is built from.

5 guides

Digital Logic

Flip-flops, decoders, encoders: how ones and zeros become memory and decisions.

1 guide

Arduino Explained

What really happens between your sketch and a pin going HIGH.

1 guide

Everyday Tech

Why the lights dim, why the breaker trips, why your phone dies at 15%.

4 guides

How Apps Work

Queues, rate limits, ticks and traffic colours: the system design behind the apps on your phone.

2 guides