int analogPin = A3; // potentiometer wiper (middle terminal) connected to analog pin 3
 int analogPin2 = A2 ;                 // outside leads to ground and +5V
int val = 0;  // variable to store the value read

void setup() {
  Serial.begin(9600);
  pinMode(LED_BUILTIN, OUTPUT);
  pinMode( 8 , OUTPUT);  
  pinMode( 7 , OUTPUT);         
}

void loop() {
  val = analogRead(analogPin);  
  Serial.println(val);          
 delay(250);


if(val>=512)
{
  digitalWrite (8, HIGH);
  digitalWrite (LED_BUILTIN,HIGH); 
}
else
{
  digitalWrite (8, LOW);
  digitalWrite (LED_BUILTIN,LOW);
}
val = analogRead(analogPin2);  
  Serial.println(val);          
 delay(250);

if(val>=512)
{
  digitalWrite (7, HIGH);
  digitalWrite (LED_BUILTIN,HIGH); 
}
else
{
  digitalWrite (7, LOW);
  digitalWrite (LED_BUILTIN,LOW);
}
}