gistfile1.txt

// object lab 3 part 1

int pot = 0; // stores potentiometer value reading
int photoValue = 0; // stores light sensor value
int potPin = A0; // potentiometer analog input
int photoPin = A1; // light sensor analog input
int yellowLED = 9; // pwm pin
int yellow2 = 6; // pwm pin
int brightness = 0; // value from potentiometer to hold LED brightness
int bright2 = 0; // value from light sensor to hold LED 2 brightness


void setup() {
  // set up serial comm
  Serial.begin(9600);
  pinMode(yellowLED, OUTPUT);
  pinMode(yellow2, OUTPUT);
}

void loop() {
  // read pot and light sensors
  pot = analogRead(potPin); // reads potentiometer
  photoValue = analogRead(photoPin); // reads light sensor

  // change LED brightness based on potentiometer value
  // write to LED
  // use map() to convert 0 - 1023 to 0 - 255
  // map(valueToMap, fromLow, fromHigh, toLow, toHigh)
  brightness = map(pot, 0, 1023, 0, 255);
  analogWrite(yellowLED, brightness);
  analogWrite(yellow2, brightness);

  //change LED2 brightness based on light sensor value
  if(photoValue < 600){
    bright2 = map(photoValue, 43, 796, 0, 255);
    analogWrite(yellow2, bright2);
  }

//  Serial.print("potentiometer value: ");
//  Serial.print(pot);
//  Serial.print("lightVal: ");
//  Serial.println(photoValue);

//  Serial.print("       LED brightness: ");
//  Serial.println(brightness);
}