Learn electronics the way it actually moves.
Watch electrons flow, capacitors fill and transistors switch. Then build, test and prove it yourself with live simulators, challenges and exams. Built for engineering students starting from zero.
Four tracks, from atom to microcontroller
Each track builds on the last. Follow the path, or jump straight to what you need.
Designed by learning science, not by accident
Every lesson follows the same nine steps, based on Gagné's Nine Events of Instruction, Mayer's multimedia principles and Bloom's taxonomy.
❓ Hook
A real-world puzzle that makes you want the answer.
🎯 Objectives
Exactly what you'll be able to do by the end.
🔁 Recall
A link to what you already know.
📘 Learn
Short explanations, each paired with an animation.
🧪 Explore
A live simulator with guided "try this" tasks.
✍️ Worked example
Solved step by step, revealed at your pace.
🧠 Check
A quick quiz with instant feedback on every answer.
🏆 Challenge
Apply it: tune a circuit to hit a real target.
📌 Summary
Key ideas and formulas on a printable cheat sheet.
Don't just read about circuits. Play with them.
Every concept has a simulator you can poke, break and fix. Flip a logic gate's inputs, burn out an LED, watch a capacitor charge in real time.
- 54 interactive simulators and animations
- Works on phones, tablets and laptops, with nothing to install
- Dark and light themes for long study sessions
Assessment that actually measures understanding
Lesson quizzes
Multiple-choice, true/false and numeric questions, each with an explanation.
Circuit challenges
Hit a target current, voltage or timing using the live simulators.
Final exams
Timed, randomised exams per track, with a breakdown of your score by topic.
Certificates
Pass with 70% or more and download a certificate with your name.
Your first circuit is 60 seconds away.
No sign-up, no downloads. Your progress, XP and badges are saved automatically in this browser.
Start Lesson 1: What is Electricity? →