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LEDs for Beginners : 9 Steps (with Pictures) - Instructables
WIRING DIAGRAMS FOR MODEL RAILROADS - HOW TO HOOK UP LEDS - choosing the correct wiring scheme, the proper current limiting resistors and verifying performance
2 LEDs in series with resistor at 3.3V won't light up, one LED works - Electrical Engineering Stack Exchange
How to Use a Charged Capacitor to Light an LED
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Wiring LEDs Correctly: Series & Parallel Circuits Explained
Resistors for LED Circuits | Resistor Applications | Resistor Guide
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Ohm's Law and series/parallel – helloCircuits!
Basics: Picking Resistors for LEDs | Evil Mad Scientist Laboratories
LED Connection Diagram and Wiring Procedure - Series, Parallel - ETechnoG
Circuits From Scratch | Let's Put LEDs in Things! | Adafruit Learning System
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Simple LED Circuits: Single LED, Series LEDs and Parallel LEDs
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Resistors for LED Circuits | Resistor Applications | Resistor Guide
How to Connect / Wire LED's - Electronic Tutorial
Calculating Current Limiting Resistor Values for LED Circuits | Nuts & Volts Magazine
Light-Emitting Diodes (LEDs) - SparkFun Learn
LED circuit - Wikipedia
Voltlog #197 - Wiring LEDs Correctly Series vs Parallel - YouTube
Wiring LEDs Correctly Series Vs Parallel Connection : 6 Steps - Instructables
LEDs (Light Emitting Diodes) | Electronics Club
