Your First Arduino Project: LED Patterns

Introduction

Welcome to your first Arduino project! LEDs are the perfect starting point because they provide instant visual feedback as you learn.

Understanding LEDs

LEDs (Light Emitting Diodes) are semiconductors that emit light when current flows through them. They require a current-limiting resistor to prevent damage.

Wiring Your First LED

Connect the LED's anode (long leg) to a digital pin through a 220-ohm resistor. The cathode (short leg) connects to ground.

Writing the Blink Sketch

The classic Blink sketch toggles an LED on and off. This teaches you the basics of digitalWrite() and delay() functions.

Creating Patterns

By adding multiple LEDs and varying the timing, you can create chase patterns, fades, and even simple animations.

Next Steps

Try PWM for smooth fading effects, or connect an RGB LED for color mixing experiments.