// Understanding Arduino if statements
// Control Led Using Potentiometer
int mypin = A3;
int readVal;
float V2;
int dt = 250;
int redPin = 9;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(mypin, INPUT);
  pinMode(redPin, OUTPUT);
}
void loop() {
  // put your main code here, to run repeatedly:
  readVal = analogRead(mypin);
  V2 = (5. / 1023.) * readVal;
  Serial.print("Potentiometer voltage is ");
  Serial.println(V2);
  // if(V2==5.0)
  if (V2 > 2 && V2 < 3)
  {
    digitalWrite(redPin, HIGH);
  }
  // if(V2!=5.0)
  if (V2 < 2 || V2 > 3)
  {
    digitalWrite(redPin, LOW);
  }
  delay(dt);
  // Make this using three leds green , blue , yellow and make them on and off at differnet voltages
}