Resources / DIY Color-Changing Clock

This program fades RGB LED lights different colors. It is suitable for use with LED strips, SMDs or standard 5mms.

Details:
Companion video: DIY Color-Changing Clock!
Language: Arduino C

Copyright Attribution:
I did not write this code. It is from Cyragia's Instructables tutorial, Fading RGB LED (Arduino). This version has not been modified from the original. This code is licenced under CC BY-NC-SA 4.0

//Copyright Attribution: Code from Cyragia's Instructables tutorial, Fading RGB LED (Arduino). 
//This version has not been modified from the original.
//This code is licenced under CC BY-NC-SA 4.0

//This program fades RGB LED lights different colors. 
//It is suitable for use with LED strips, SMDs or standard 5mms.
//This program is used in the following video: https://youtu.be/9YJtSkO6SYA
//Comments and code shared by esTech (youtube.com/@estech321)
//and on the website estech321.github.io

#define GREEN 3
#define BLUE 5
#define RED 6
#define delayTime 20

void setup() {

  pinMode(GREEN, OUTPUT);
  pinMode(BLUE, OUTPUT);
  pinMode(RED, OUTPUT);
  digitalWrite(GREEN, HIGH);
  digitalWrite(BLUE, HIGH);
  digitalWrite(RED, HIGH);
}

int redVal;
int blueVal;
int greenVal;

void loop() {

  int redVal = 255;
  int blueVal = 0;
  int greenVal = 0;
  for( int i = 0 ; i < 255 ; i += 1 ){
	greenVal += 1;
	redVal -= 1;
	analogWrite( GREEN, 255 - greenVal );
	analogWrite( RED, 255 - redVal );

	delay( delayTime );
  }

  redVal = 0;
  blueVal = 0;
  greenVal = 255;
  for( int i = 0 ; i < 255 ; i += 1 ){
	blueVal += 1;
	greenVal -= 1;
	analogWrite( BLUE, 255 - blueVal );
	analogWrite( GREEN, 255 - greenVal );

	delay( delayTime );
  }

  redVal = 0;
  blueVal = 255;
  greenVal = 0;
  for( int i = 0 ; i < 255 ; i += 1 ){
	redVal += 1;
	blueVal -= 1;
	analogWrite( RED, 255 - redVal );
	analogWrite( BLUE, 255 - blueVal );

	delay( delayTime );
  }
}