Computer Science Final Richard Barkley

#include //Including necessary libraries to the function. #include // Set the LCD address to 0x27 for a 20 chars and 4 line display LiquidCrystal_I2C lcd(0x27, 20, 4); void setup() { // initialize the LCD lcd.init(); //initialize outputs pinMode(9, OUTPUT); //Red LED pinMode(10,OUTPUT); //Red LED pinMode(11, OUTPUT); //Green LED pinMode(12, OUTPUT); //Green LED Serial.begin(9600); // start serial monitor to get baseline light intensity. lcd.backlight(); // Turn on the blacklight and print a message. } void loop() { //defining local variable "sensorValue" as the value the photoresistor reads. int sensorValue = analogRead(A0); Serial.println(sensorValue); //Start serial monitor and read the photoresistor every 100 milliseconds //Check serial monitor and see value outputted with the lights on and off. //These on and off values will be the tolerances for the if statement. //for example if the lights are on and the sensor is reading 35 then 35 is the minimum value for the on screen. if (sensorValue > 35) { lcd.setCursor(3, 0); //Setting the start point for the LCD on the first space in the top row. lcd.print("O'Dea MakerSpace"); //Printing the string inside the quote on indicated line. lcd.setCursor(2,0); lcd.print("Status: open"); lcd.setCursor(1,0); lcd.print("Current Teacher:"); lcd.setCursor(0,0); lcd.print("Dr. White"); digitalWrite(11, HIGH); //Switching the green LEDs on to indicate room is open. digitalWrite(12, HIGH); digitalWrite(10, LOW); //Switching the red LEDs off. digitalWrite(9, LOW); delay(500); //Constant power intervals to the LEDS in half secong intervals. //This is done to allow the LCD screen to keep a constant display and not blink. } else { lcd.print("O'Dea MakerSpace"); //Printing the string inside the quote on indicated line. lcd.setCursor(2,0); lcd.print("Status: Closed"); lcd.setCursor(1,0); lcd.print("No Teacher Present"); lcd.setCursor(0,0); lcd.print("Roll Irish"); digitalWrite(9, HIGH); //Switching the red LEDs on to indicate room is closed. digitalWrite(10, HIGH); digitalWrite(11, LOW); //Switching the green LEDs off. digitalWrite(12, LOW); delay(500); } }