Aurdino rgb led controller

#define r 3
#define g 5
#define b 6

#define r_dimmer A0
#define g_dimmer A3
#define b_dimmer A5

#define knp 1

#define lyd A2



void setup() {

  pinMode(r, OUTPUT);
  pinMode(g, OUTPUT);
  pinMode(b, OUTPUT);

  pinMode(knp, INPUT);


  Serial.begin(9600);
}



void loop() {


int r_regnet = 0;
int g_regnet = 0;
int b_regnet = 0;

int r_stat = analogRead(r_dimmer);
int g_stat = analogRead(g_dimmer);
int b_stat = analogRead(b_dimmer);

int lyd_stat = analogRead(lyd);

boolean ny_farge = FALSE;
boolean debugg_regnet == TRUE;


int start_led = 0;

int knp_stat = 0;

//knapp debug
  if(knp == HIGH){

      ++knp_stat;
      delay(10);
  }


 if(knp_stat > 2) {

      knp_stat = 0;
  }



//Manuel modus



  r_regnet = r_stat / 4.2;
  b_regnet = b_stat / 4.2;
  g_regnet = g_stat / 4.2;

      if(r_regnet <= 7 && knp_stat == 0) {

    r_regnet = 0;
    }

        if(g_regnet <= 15 && knp_stat == 0) {

    g_regnet = 0;
    }
        if(b_regnet <= 7 && knp_stat == 0) {

    b_regnet = 0;
    }


}



//lyd modus



    if(lyd_stat > 200 && knp_stat 1){
       start_led = random(2);
       ny_farge = TRUE;

    }

  if(start_led == 0  && ny_farge == TRUE){
    r_regnet = 255;
    b_regnet = random(255);
    g_regnet = random(255);

    ny_farge = FALSE;
}
if(start_led == 1 && ny_farge == TRUE){
    r_regnet = random(255);
    b_regnet = 255;
    g_regnet = random(255);

    ny_farge = FALSE;
}
if(start_led == 2 && ny_farge == TRUE){
    r_regnet = random(255);
    b_regnet = random(255);
    g_regnet = 255;

    ny_farge = FALSE;
}

    if(knp_stat == 1) {

    int fade_amount = 0.95;
    r_regnet *= fade_amount;
    b_regnet *= fade_amount;
    g_regnet *= fade_amount;

        }
//

  analogWrite(r, r_regnet);
  analogWrite(g, g_regnet);
  analogWrite(b, b_regnet);


 if(debugg_regnet == TRUE) {


  Serial.print("r_regnet = ");
  Serial.print(r_regnet);
  Serial.print("    g_regnet = ");
  Serial.print(g_regnet);
  Serial.print("    b_regnet = ");
  Serial.println(b_regnet);
}

  delay(50);

//end
}