pulse_mix.c

/**
 ** Pulse
 **/

const int redLED = 11;
const int greenLED = 10;

void setup() {}

void loop()  {

  // Fade in
  for(int brightness = 0 ; brightness <= 255; brightness +=5) {
    analogWrite(redLED, 255 - brightness);
    analogWrite(greenLED, brightness);
    delay(30);
  }

  // Fade out
  for(int brightness = 255 ; brightness >= 0; brightness -=5) {
    analogWrite(redLED, 255 - brightness);
    analogWrite(greenLED, brightness);
    delay(30);
  }
  
}

/**
 ** Color Mixer
 **/

const int redLED = 11;
const int redSwitch = 1;
int redBrightness = 0;

const int greenLED = 10;
const int greenSwitch = 2;
int greenBrightness = 0;

void setup() {
  pinMode(redLED, INPUT);
  pinMode(greenLED, INPUT);
}

void loop()  {
  getBrightness();
    
  analogWrite(redLED, redBrightness);
  analogWrite(greenLED, greenBrightness);  
}

void getBrightness() {
  int pressedRed = digitalRead(redSwitch);
  int pressedGreen = digitalRead(greenSwitch);
  
  if(pressedRed)
    redBrightness++;
  if(pressedGreen)
    greenBrightness++;
  if(pressedRed && pressedGreen)
    redBrightness = greenBrightness = 0;
  
  redBrightness = constrain(redBrightness, 0, 255);
  greenBrightness = constrain(greenBrightness, 0, 255);
}

/**
 ** Pulsing Color Mixer
 **/
const int redLED = 11;
const int redSwitch = 1;
int redBrightness = 0;

const int greenLED = 10;
const int greenSwitch = 2;
int greenBrightness = 0;

void setup() {
  pinMode(redLED, INPUT);
  pinMode(greenLED, INPUT);
}

void loop()  {
  getBrightness();
    
  // Fade in
  for(int brightness = 0 ; brightness <= 255; brightness +=5) {
    analogWrite(redLED, map(brightness, 0, 255, 0, redBrightness));
    analogWrite(greenLED, map(brightness, 0, 255, 0, greenBrightness));
    delay(30);
  }

  // Fade out
  for(int brightness = 255 ; brightness >= 0; brightness -=5) {
    analogWrite(redLED, map(brightness, 0, 255, 0, redBrightness));
    analogWrite(greenLED, map(brightness, 0, 255, 0, greenBrightness));
    delay(30);
  }
}

void getBrightness() {
  int pressedRed = digitalRead(redSwitch);
  int pressedGreen = digitalRead(greenSwitch);
  
  if(pressedRed)
    redBrightness++;
  if(pressedGreen)
    greenBrightness++;
  if(pressedRed && pressedGreen)
    redBrightness = greenBrightness = 0;
  
  redBrightness = constrain(redBrightness, 0, 255);
  greenBrightness = constrain(greenBrightness, 0, 255);
}

/**
 ** Finding Sensor Value Limits
 **/
const int sensor = 3;

int low, high, current;

void setup() {
  Serial.begin(9600);
}

void loop()  {
  current = analogRead(sensor);
  if(current > high) high = current;
  if(current < low) low = current;
  
  char sensors[20];
  sprintf(sensors, "%d3 %d3 %d3", low, high, current);
  Serial.println(sensors);
}