Circuit Simulator

Make

Build circuits and watch the current flow as little moving dots.

Type: Electronics sandbox
Vibe: Geeky / Hands-on
Best for: Tinkering / Learning
Time: 15+ min
Device: Best on desktop
Sound: Silent
Source: falstad.com

Electronics
Simulation
Sandbox

About this site

Paul Falstad's long-running electronics simulator. Start from dozens of example circuits, from a simple LED to oscillators and logic gates, then add parts and rewire things to see what happens.

When to open it

Set aside a while: this one easily runs past 15 minutes. It's best on a computer with a mouse or keyboard, and it's silent, so it's safe at work or in class. Best for tinkering and learning.