Electronics 101

Start from zero.

A structured course in practical electronics: short lessons in a deliberate order, from what a volt actually is to a working bench. Follow it top to bottom, or search for the exact thing you're stuck on.

01

Foundations

3 lessons
  1. 1Voltage, current, and resistance, without the water analogyThe three quantities every circuit is built from, what they actually mean, and why the multimeter measures each one differently.6 min read
  2. 2Reading a schematicSchematics are a language with a small vocabulary. Learn a dozen symbols and the grammar of nets, and every circuit diagram becomes readable.7 min read
  3. 3Your first breadboard circuitAn LED, a resistor, and a battery: the smallest circuit worth building, and everything the breadboard's hidden wiring does underneath it.5 min read
02

Components

2 lessons
  1. 4Resistors in practiceColor bands, preferred values, power ratings, and the three jobs resistors actually do in nearly every circuit you'll build.6 min read
  2. 5Capacitors: storing and smoothingWhat a capacitor actually does in DC circuits, why decoupling capacitors sit next to every chip, and which type to reach for.7 min read