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void setup ()
{
  Serial.begin (9600);
  
  pinMode (A0, INPUT);
  pinMode (A1, INPUT);
  pinMode (A2, INPUT);
  
  pinMode (3, OUTPUT);
  pinMode (5, OUTPUT);
  pinMode (6, OUTPUT);
}
 void loop ()
 
{
  int R = map ( analogRead (A2),0,1023,0,255);
  int G = map ( analogRead (A0),0,1023,0,255);
  int B = map ( analogRead (A1), 0,1023,0,255);
  Serial.print ("R: ");
  Serial.print ( R );
  Serial.print ("G: ");
  Serial.print ( G );
  Serial.print ("B: ");
  Serial.print ( B );

  analogWrite ( 6, R);
  analogWrite ( 3, G);
  analogWrite ( 5, B);
  
  delay (5000);
  
}/code]

Questo è il codice