int potPin1 = A1; 
int potPin2 = A2;   

int ledPin = 9;   // select the pin for the LED
int val1 = 0;    
int val2 = 0;

void setup() {
  Serial.begin(9600);
  pinMode(A3, OUTPUT);
  pinMode(A4, OUTPUT);
  pinMode(A5, OUTPUT);
}
void loop() {
  val1 = analogRead(potPin1);   
  val2 = analogRead(potPin2); 
  analogWrite(A3, int(float(val1)/1024 * 255));
  analogWrite(A4, int(512.0/1024 * 255));
  analogWrite(A5, int(float(val2)/1024 * 255));
  
  Serial.print(val1);
  Serial.print(" ");
  Serial.println(val2);
}