trying to learn how to use if statements

Projects Programming
5

Try This:

const byte blueLED= 3;        //set blue led to pin 3
const byte whiteLED= 5;       // set white led to pin 5
const byte redLED= 6;         // set red led to pin 6
const byte potPin= A1;        // set potentiometer to pin A1

void setup() {
  Serial.begin(9600);          //start serial communication
  pinMode(blueLED, OUTPUT);    //set blue led as an output
  pinMode(whiteLED, OUTPUT);   //set white led as an output
  pinMode(redLED, OUTPUT);     //set red led as an output
  pinMode(potPin, INPUT);      //set potentiometer as an input
}

void loop() {
  int rValue= analogRead(potPin);         //read potentiometer and set the value = to rValue

  Serial.print("Potentiometer Value ");   //print to serial
  Serial.println(rValue);                 //print rvalue to serial

  if (rValue <= 255){                     // If rValue <= 255 turn on only blue
    digitalWrite(blueLED, HIGH);                  
    digitalWrite(redLED, LOW);
    digitalWrite(whiteLED, LOW);
  } else if(rValue <= 355) {              // if rValue is between 256 and 355, turn on both red and blue
    digitalWrite(blueLED, HIGH);                  
    digitalWrite(redLED, HIGH);
    digitalWrite(whiteLED, LOW);
  } else if (rValue <= 720){              // if rValue is between 356 and 720, turn on only red
    digitalWrite(blueLED, LOW);                  
    digitalWrite(redLED,HIGH);
    digitalWrite(whiteLED, LOW);
  } else{                                 // must be > 720.  Turn on only white 
    digitalWrite(blueLED, LOW);
    digitalWrite(redLED, LOW);
    digitalWrite(whiteLED,HIGH);
  }
}