Electrical Engineering

Learn the difference between 3.3V and 5V devices and logic levels.

How to strip, crimp, and work with wire.

The differences between AC and DC.

Classroom STEM activity that has students build a battery from a lemon, measure the open and closed circuit voltages, and determine the battery's internal resistance.

Learn the basics about LEDs as well as some more advanced topics to help you calculate requirements for projects containing many LEDs.

This tutorial covers the concept of analog and digital signals, as they relate to electronics.

How to use the 74HC4051 multiplexer breakout to drive eight LEDs, read eight button inputs, or monitor eight potentiometers.

Not working as expected? In this tutorial, we will be exploring a few general troubleshooting tips and possible solutions that frequently come up with SparkFun's Technical Support.

This tutorial will show you how to use a headless Raspberry Pi to flash hex files onto AVR microcontrollers as a stand-alone programmer. It also tells the story about production programming challenges, how SparkFun came to this solution, and all the lessons learned along the way.

An introduction to polarity in electronic components. Discover what polarity is, which parts have it, and how to identify it.

This tutorial will explain how to use and convert between the standard metric prefixes.

Learn how to measure the current consumption of your project using the ACS723 Current Sensor.

A tutorial to help figure out the power requirements of your project.

Learn how to create your own Fritzing part so you can make amazing looking wiring diagrams, learn about schematics and PCB design, and get your design fabbed into a real PCB with Fritzing's PCB manufacturing service.

Building a pedal around the Teensy 3.2 and Teensy Audio shield. Changing the effect in the pedal is as easy as uploading a new sketch!

Turn a large voltage into a smaller one with voltage dividers.

Welcome to the wonderful world of breadboards. Here we will learn what a breadboard is and how to use one to build your very first circuit.

In this article, we share our recent advancements in quality control. Along with making our tests more thorough, we have also made them more efficient and robust.

Learn about Ohm's Law, one of the most fundamental equations in all electrical engineering.

How to take a solar powered pathway light from a hardware store and make it into a crude soil moisture sensor.

Build a Boss Alarm that alerts you of anyone walking into your office and automatically changes your computer screen.

How to crack an unknown safe in under an hour.

Building a gyrator-based analog equalizer using the Proto Pedal.

Getting started with the SparkFun Proto Pedal. We'll assemble the board, then discuss some of the details of the circuit.