LEDs

A guide to LEDs. This article explains how to identify the leads on an LED, as well as how to select an appropriate resistor. If you’re new to LEDs, we’ll have you up and running in no time.

Variables and Constants

Variables and constants are used to store values in your programs. Essentially all computer programs are a sequence of setting values, changing values, inspecting values and reacting to them. As such, variables and constants are the basis of all programming.

Ohm’s Law

The most fundamental law of electronics. If you’re just starting out with electronics, take the time to learn and memorize this law. You’ll thank us later.