Does the resistor need to go before the LED? - YouTube
Basics: Picking Resistors for LEDs | Evil Mad Scientist Laboratories
Resistor before or after LED? - Build Electronic Circuits
led matrix - Do I need a resistor to connect this LED lamp? - Electrical Engineering Stack Exchange
L1: Turning on an LED - Physical Computing
Using One Resistor on a Common Anode/Cathode RGB LED? | CircuitBread
Do I need a resistor for each LED? - LEDs and Multiplexing - Arduino Forum
Breadboard Layout | Arduino Lesson 2. LEDs | Adafruit Learning System
Choosing the Resistor to Use With LEDs : 3 Steps - Instructables
How to select resistor value for LED with simple calculation (Ohm's Law) - YouTube
Forward Voltage and KVL | All About LEDs | Adafruit Learning System
LED Without A Resistor
IR LED: A resistor is needed even when the current isn't enough? : r/arduino
Guide to LEDs and resistors
50 Watt 6 Ohm Resistor Kit for LED Taillights. - Cabin Bright
Driving an LED with or without a resistor – tinkerlog
Why does every LED need a resitor - General Electronics - Arduino Forum
Series LED Resistor Calculator - Engineering Calculators & Tools
How to Calculate Resistor Value for LED Lighting | Simply Smarter Circuitry Blog
Resistors for LED Circuits | Resistor Applications | Resistor Guide
LED Resistor Calculator | Need for Series Resistor | Equation, Example, Resistor Power Dissipation
