int pot1 = A0;
int pot2 = A1;
int pot3 = A2;

int PWM1 = 9;
int PWM2 = 10;
int PWM3 = 11;

int value1;
int value2;
int value3;

void setup()
 {
  pinMode (pot1, INPUT);
  Serial.begin (9600);
  pinMode (PWM1, OUTPUT);

  pinMode (pot2, INPUT);
  Serial.begin (9600);
  pinMode (PWM2, OUTPUT);

  pinMode (pot3, INPUT);
  Serial.begin (9600);
  pinMode (PWM3, OUTPUT); 
}

void loop() {
  value1 = analogRead(pot1);
  value1 = map(value1, 0, 1023, 0, 255);
  analogWrite (PWM1, value1);
  delay (100); 

  value2 = analogRead(pot2);
  value2 = map(value2, 0, 1023, 0, 255);
  analogWrite (PWM2, value2);
  delay (100);

  value3 = analogRead(pot3);
  value3 = map(value3, 0, 1023, 0, 255);
  analogWrite (PWM3, value3);
  delay (100);

  
}