Getting Started with the Arduino - Controlling the LED (Part 2)

How to program the Arduino to turn on/off an LED with a button, and use a photoresistor to control the flashing rate of an LED and the output of a speaker.

Control Power led brightness and Brushless motor via ESC, using pwm signal and 4cell battery (burned 2 boards) - Project Guidance - Arduino Forum

Arduino countdown timer with two displays and a buzzer, part 2: the Box – thesolaruniverse

Arduino - Turn LED ON and OFF With Button - The Robotics Back-End

Arduino 2 Button 2 Led : 7 Steps - Instructables

Multi-tasking the Arduino - Part 1

How can I control an LED via the serial monitor? - Programming Questions - Arduino Forum

school project / led controlling - LEDs and Multiplexing - Arduino Forum

SIK Experiment Guide for Arduino - V3.2 - SparkFun Learn

Light Saber Build Part 2 – EF Computer

Blink two LEDs with Arduino

Relay Control LED Seeed Studio Wiki

L1: Turning on an LED - Physical Computing