Arduino-How to use LED

How to Control LEDs on the Arduino - Circuit Basics

How to use a Force Sensitive Resistor with Arduino - Tutorial - Ardumotive Arduino Greek Playground

Controlling Multiple LEDs in Series and Parallel - Project Guidance - Arduino Forum

Arduino - LED - Blink

The Basics of Arduino: Reading Switch States

Getting Started with the Arduino - Controlling the LED (Part 1)

Flowing LED Lights With Arduino Uno R3 : 6 Steps - Instructables

Light Sensor Triggers LED - Arduino Tutorial

Arduino Use a Button to Toggle an LED - The Geek Pub