LED Gumball Machine

A quick introduction to pull-up resistors - whey they're important, and how/when to use them.

Light is a useful tool for the electrical engineer. Understanding how light relates to electronics is a fundamental skill for many projects.

What is an interrupt? In a nutshell, there is a method by which a processor can execute its normal program while continuously monitoring for some kind of event, or interrupt. There are two types of interrupts: hardware and software interrupts. For the purposes of this tutorial, we will focus on hardware interrupts.

This guide will show you how to write programs on your Raspberry Pi using Python to control hardware.

Gyroscopes measure the speed of rotation around an axis and are an essential part in determines ones orientation in space.

We can use the parts and concepts in the SparkFun Invetor's Kit to make a primitive keyboard instrument.

Use this IR LED/phototransistor fusion to sense objects in close proximity or even the color of a surface!

It's now easier than ever to measure and characterize how different materials absorb and reflect different wavelengths of light. The AS726X spectral sensors allow you to detect wavelengths in the visible range (VIS) and near infrared range (NIR)!