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Esplora Blink

This sketch blinks the Esplora's RGB LED. It goes through all three primary colors (red, green, blue), then it combines them for secondary colors(yellow, cyan, magenta), then it turns on all the colors to create white.

For best results, cover the LED with a piece of white paper to see the colors blend.

Hardware Required

  • Arduino Esplora

Circuit

Only your Arduino Esplora is needed for this example. Connect the Esplora to your computer with a USB cable.

RGB led on the Esplora

Code

The RGB LED is comprised of three colors that represent the three primary colors: red, green, and blue.

To control all the colors with one instruction you use the writeRGB() function. It take three arguments. Each value represents the brightness of the red, green, and blue element, respectively. The brightness scales between 0 (for completely off) to 255 (for completely on).

After setting the brightness of an LED, use delay() to pause the sketch for a second, so the light stays in the state you left it.

It's also possible to control each light individually with the following functions :

/*
  Esplora Blink
 
 This  sketch blinks the Esplora's RGB LED. It goes through
 all three primary colors (red, green, blue), then it
 combines them for secondary colors(yellow, cyan, magenta), then
 it turns on all the colors for white.
 For best results cover the LED with a piece of white paper to see the colors.
 
 Created on 22 Dec 2012
 by Tom Igoe
 
 This example is in the public domain.
 */


#include <Esplora.h>


void setup() {
  // There's nothing to set up for this sketch
}

void loop() {
  Esplora.writeRGB(255,0,0);    // make the LED red
  delay(1000);                  // wait 1 second
  Esplora.writeRGB(0,255,0);    // make the LED green
  delay(1000);                  // wait 1 second
  Esplora.writeRGB(0,0,255);    // make the LED blue
  delay(1000);                  // wait 1 second
  Esplora.writeRGB(255,255,0);  // make the LED yellow
  delay(1000);                  // wait 1 second
  Esplora.writeRGB(0,255,255);  // make the LED cyan
  delay(1000);                  // wait 1 second
  Esplora.writeRGB(255,0,255);  // make the LED magenta
  delay(1000);                  // wait 1 second
  Esplora.writeRGB(255,255,255);// make the LED white
  delay(1000);                  // wait 1 second

}

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