LED tutorial: "shorter anode pin should be connected to positive". Eh?! WTF? - General Electronics - Arduino Forum
How to Wire LEDs in Series & Parallel the Right Way
Understanding LEDs | DioT Labs
techthings.ca - Building a Simple Circuit
LED Polarity: Understanding and Troubleshooting - Birddog Lighting
How to Wire LEDs | A Modular Life
Chapter 1
MIT Illuminations Seminar
Using LEDs in your circuits - Jumptuck
Use LEDs with your Crumble | Getting started with Crumble | Crumble-software | Coding projects for kids and teens
How are the LEDs represented in the Starter Kit projects book? – Arduino Help Center
Identify led positive and negative terminals - electronics #3 - YouTube
Led polarity and orientation on pcb - Tips on modular synthesizers
Light Up Your Projects With (LED) Light Emitting Diodes - Webcommand.net
Making the Arduino Blinking LED Project (a Complete Tutorial)
Polarity - SparkFun Learn
How to tell the positive and negative terminal of an LED - Quora
JonDent - Exploring Electronic Music: LED Wiring
How Does a 5mm LED Work? - LEDSupply Blog
LED information
Customer Questions: Buy LED Lights | 3528 Surface Mount
How to identify the positive and negative terminals of an LED if you make both terminals the same size - Quora
GUIDE TO LED PROJECTS : 9 Steps - Instructables
