Wemos ESP8266 D1 Mini RGB led swell

esp8266-rgb-swell.ino

/* ***********************************************************
 *                      Global Constants                     *
 *                    Hardware Definitions                   *
 * ********************************************************* */

// Wemos Mini D1 Pro pinout. This should have been provided by selecting the correct board but this
// board wasn't available when I looked for it so whatever this requires less dependency on the
// Arduino IDE configuration anyway.
// https://arduino-projekte.info/wp-content/uploads/2017/03/wemos_d1_mini_pro_pinout.png
byte PIN_D0 = 16;
byte PIN_D1 = 5;
byte PIN_D2 = 4;
byte PIN_D3 = 0;
byte PIN_D4 = 2;
byte PIN_D5 = 14;
byte PIN_D6 = 12;
byte PIN_D7 = 13;
byte PIN_D8 = 15;

/* The Arduino Web site recommends that one uses const 
 * rather than #define since using #define could have  
 * unwanted side effects
 */
const int redPin   = PIN_D3;   // Red LED pin
const int greenPin = PIN_D2;   // Green LED pin
const int bluePin  = PIN_D1;   // Blue LED pin
const int maxBright = 255; // Maximum LED brightness

/* ***********************************************************
 *                  setColor Functions                       *
 * ********************************************************* */
void setColor(int redValue, int greenValue, int blueValue){
    analogWrite(redPin, redValue);
    analogWrite(greenPin, greenValue);
    analogWrite(bluePin, blueValue);
    Serial.print("Red: ");
    Serial.print(redValue);
    Serial.print(" Green: ");
    Serial.print(greenValue);
    Serial.print(" Blue: ");
    Serial.println(blueValue);
}

/* ***********************************************************
 *                       setup Function                      *
 * ********************************************************* */
void setup(){
    // Turn on the Serial Port
    Serial.begin(115200);
    pinMode(redPin, OUTPUT);
    pinMode(greenPin, OUTPUT);
    pinMode(bluePin, OUTPUT);
}

/* ***********************************************************
 *                       loop Function                       *
 * ********************************************************* */
void loop(){
    //Local Variables
    int longDelay = 1000;   // fading time between colors
    int shortDelay = 10;    // short time delay between colors
    int redValue;
    int greenValue;
    int blueValue;
    int ledGear;            // For switching LED fading 
    
    // Various ways to turn on the RGB LED;
    // Here we manually set the color
    Serial.println("Manual Colors");
    setColor(maxBright, 0, 0);                  // Red Color
    delay(longDelay);
    setColor(0, maxBright, 0);                  // Green Color
    delay(longDelay);
    setColor(maxBright, maxBright, maxBright);  // White Color
    delay(longDelay);
    setColor(170, 0, maxBright);                // Purple Color
    delay(longDelay);
    
    Serial.println("Fade from Red to Green");
    //Fade from Red to Green
    delay(longDelay);
    redValue = maxBright;
    greenValue = 0;
    blueValue = 0;
    for(int i = 0; i < maxBright+1; i++){
        setColor(redValue, greenValue, blueValue);
        redValue -= 1;
        greenValue += 1;
        delay(shortDelay);
    }
    
    Serial.println("Fade from Green to Blue");
    //Fade from Green to Blue
    delay(longDelay);
    redValue = 0;
    greenValue = maxBright;
    blueValue = 0;
    for(int i = 0; i < maxBright+1; i++){
        setColor(redValue, greenValue, blueValue);
        greenValue -= 1;
        blueValue += 1;
        delay(shortDelay);
    }
    
    Serial.println("Fade from Blue to Red");
    //Fade from Blue to Red
    delay(longDelay);
    redValue = 0;
    greenValue = 0;
    blueValue = maxBright;
    for(int i = 0; i < maxBright+1; i++){
        setColor(redValue, greenValue, blueValue);
        blueValue -= 1;
        redValue += 1;
        delay(shortDelay); 
    }
    
    Serial.println("Fade All three colors Red to Green, Green to Blue, Blue to Red");
    //Fade All three colors Red to Green, Green to Blue, Blue to Red
    delay(longDelay);
    redValue = maxBright;
    greenValue = 0;
    blueValue = 0;
    ledGear = 1;
    do {
        setColor(redValue, greenValue, blueValue);
        //First Gear - Fade from Red to Green
        if (ledGear == 1) {
            redValue -= 1;
            greenValue += 1;
        }
        //Second Gear - Fade from Green to Blue
        if (ledGear == 2){
            greenValue -= 1;
            blueValue += 1;
        }
        //Third Gear - Fade from Blue to Red
        if (ledGear == 3){
            blueValue -= 1;
            redValue +=1;
        }
        //Gear Switching
        if (greenValue == maxBright) ledGear = 2;
        if (blueValue == maxBright) ledGear = 3;
        if (redValue == maxBright+1) ledGear = 4;
        delay(shortDelay); 
    } while (ledGear < 4);
    delay(longDelay);
}