Light-Emitting Diodes (LEDs)
Contributors:
Nick Poole, 
bboyho
Nick Poole, bboyho 
Resources and Going Further
You've made it! You know, like, almost everything... about LEDs. Now go forth and put LEDs on whatever you please! And now... a dramatic reenactment of an LED without a current limiting resistor being over powered and burning itself out:
Yeah... it's not spectacular.
If you'd like to learn more about some LED related topics, visit these other tutorials:
Light
Light is a useful tool for the electrical engineer. Understanding how light relates to electronics is a fundamental skill for many projects.
IR Communication
This tutorial explains how common infrared (IR) communication works, as well as shows you how to set up a simple IR transmitter and receiver with an Arduino.
How LEDs are Made
We take a tour of a LED manufacturer and learn how PTH 5mm LEDs are made for SparkFun.
LED Butterfly Pop Up Card
Craft an illuminated butterfly pop up card with copper tape, two LEDs, and a battery.
Simon Says Experiments
So you've built up a Simon Says kit? What next? This tutorial will get you up and running with Arduino software, guide you through a few example sketches, and send you on your way to create your own. Careful, this stuff is highly addictive. :)
LED PomPom Headbands
Follow this tutorial to make your own light up PomPom headband! Try the beginner version if you are new to electronics or the advanced version if you have some more experience!
Or check out some of these related blog posts: