#define LED1  12
#define LED2  11
#define POT   5
void setup()
{
  pinMode(LED1,OUTPUT);
  pinMode(LED2,OUTPUT);
  Serial.begin(9600);
}
void loop()
{
  int adc=analogRead(POT);
  Serial.print("Analog Read value : ");
  Serial.print(adc);
  adc=map(adc,0,1023,0,255); 
  Serial.print("  map value to : ");
  Serial.println(adc);
  analogWrite(LED1,adc); 
  analogWrite(LED2,255-adc);
  delay(500);    
}