Does the resistor need to go before the LED? - YouTube
L1: Turning on an LED - Physical Computing
Driving an LED with resistor directly from 3.3v GPIO pin of a microcontroller - Electrical Engineering Stack Exchange
Arduino: LEDs and resistors
Which Resistor Should I Use with my LED? – Kitronik Ltd
Forward Voltage and KVL | All About LEDs | Adafruit Learning System
Series LED Resistor Calculator - Engineering Calculators & Tools
Resistors for LED Circuits | Resistor Applications | Resistor Guide
Choosing the Resistor to Use With LEDs : 3 Steps - Instructables
How to select resistor value for LED with simple calculation (Ohm's Law) - YouTube
Easy LED Current Limiting Resistor Calculator In 3 Steps
Simple Basic LED Circuit (How to Use LEDs) : 4 Steps - Instructables
How to Calculate the Value of Resistor for LEDs Circuits?
How to Install Load Resistors for LED Turn Signal Lights: - do-it-up.com
How do I calculate what resistors I need for RGB LEDs with 3.7V? - Electrical Engineering Stack Exchange
Guide to LEDs and resistors
Don't Burn Out! Calculating LED Current Limiting Resistor | Benc
Basics: Picking Resistors for LEDs | Evil Mad Scientist Laboratories
Resistors for LED Circuits | Resistor Applications | Resistor Guide
LED Dropping Resistor Calculator
How to Calculate the Value of Resistor for LEDs Circuits?
LED & HID Load Resistor - Hyper Flash Fix
