3rd Inning

Introduction

Tri-color LED fading

Components Needed

• Freeduino or Arduino or clone
• USB cable for Freeduino
• Freeduino development software - download here!
• Solderless Breadboard
• Hookup wire 22gauge solid

• Common Cathode LED

How to

1. refer to the fritzing drawing to place the wires
2. upload the code below using cut and paste
3. Run and watch the fading of the led!

Schematic

Fritzing

Code

int RED = 9;    // RED pin of the LED to PWM pin 0 
int GREEN = 10;  // GREEN pin of the LED to PWM pin 1
int BLUE = 11;   // BLUE pin of the LED to PWM pin 2

void setup()
{
  // nothing for setup 
}

void loop()
{
  for(int r = 0; r < 1024; r+=5) {
    for(int g = 0; g < 1024; g+=5) {
      for(int b = 0; b < 1024; b+=5) {
        analogWrite(RED, r);
        analogWrite(GREEN, g);
        analogWrite(BLUE, b);
        delay(30);
      }
    }
  }
}

Troubleshooting

• is your led in correctly
• code for the pins on Arduino correct

Resources

Most of this example was taken from here.