//Analog Input and Output

int prePin = A0; //Analog input pin
int potPin = A1; //Analog input pin

int pre = 0; //Stores Potentiometer 1 value
int pot = 0; //Stores Potentiometer 2 value

int whiteLED1 = 10; //LED pin
int whiteLED2 = 9; //LED pin

int brightness1 = 0; //value to hold LED brightness
int brightness2 = 0;


void setup()
{
  // put your setup code here, to run once:
  Serial.begin(9600); //Setup serial communication
  pinMode(whiteLED1, OUTPUT); //LED output
  pinMode(whiteLED2, OUTPUT);
}

void loop()
{
  pre = analogRead(prePin);
  pot = analogRead(potPin);

  //use map() to convert 0-1023 to 0-255 (Analog Input to Analog Output)
  //map(valueToMap, fromLow, fromHigh, toLow, toHigh);

  brightness1 = map(pre, 0, 1023, 0, 255);
  analogWrite(10, brightness1);

  brightness2 = map(pot, 0, 1023, 0, 255);
  analogWrite(9, brightness2);

  Serial.print("Pre val: ");
  Serial.print(brightness1);
  Serial.print(", Pot val: ");
  Serial.println(brightness2);
  delay(200);
}