/*
Color and "anti-color" mixer
Potentiometers R, G, B are seting LED brightness in range: 0..255
and sending values via serial port 
*/
const int Red1 = 9;   
      int Green1 = 10;
      int Blue1 = 11;  
      int Red2 = 3;   
      int Green2 = 5;
      int Blue2 = 6;  // the pin that the LED is attached to
      byte R_brightness;
      byte G_brightness;
      byte B_brightness;
      byte R2_brightness;
      byte G2_brightness;
      byte B2_brightness;

void setup() {

  // initialize the serial communication:
  Serial.begin(9600);

  // initialize the led pins as an outputs:
  pinMode( Red1, OUTPUT);
  pinMode( Green1, OUTPUT);
  pinMode( Blue1, OUTPUT);
 
  pinMode( Red2, OUTPUT);
  pinMode( Green2, OUTPUT);
  pinMode( Blue2, OUTPUT);
}


void loop() {

  // reading potentiometers values
  R_brightness = analogRead(A0);
  G_brightness = analogRead(A1);
  B_brightness = analogRead(A2);

  // kreacja wartosci przeciwnej do odczytu potencjometru
  R2_brightness = 255/2-(R_brightness - 128);
  G2_brightness = 255/2-(G_brightness - 128);
  B2_brightness = 255/2-(B_brightness - 128);

  // setting brightness of specific LEDs
  analogWrite(Red1, R_brightness);
  analogWrite(Green1, G_brightness);
  analogWrite(Blue1, B_brightness);
  
  analogWrite(Red2, R2_brightness);
  analogWrite(Green2, G2_brightness);
  analogWrite(Blue2, B2_brightness);

  // sending brightness values via serial port
  Serial.print("\t R:");
  Serial.print(R_brightness); 
  Serial.print("\t G:");
  Serial.print(G_brightness);
  Serial.print("\t B:");
  Serial.print(B_brightness);

  Serial.print("\t\t\tR:");
  Serial.print(R2_brightness); 
  Serial.print("\t G:");
  Serial.print(G2_brightness);
  Serial.print("\t B:");
  Serial.println(B2_brightness);

}