Final Project Journal

if (readldr <= 700)

{

if (count > 0)

{

digitalWrite(buzzer, LOW);

lcd.clear();

switch (flag) {

case 1:

digitalWrite(redLed[count - 1] , LOW);

digitalWrite(greenLed[count - 1] , HIGH);

break;

case 2:

digitalWrite(redLed[count - 1] , LOW);

digitalWrite(redLed[count - 2] , LOW);

digitalWrite(greenLed[count - 1] , HIGH);

digitalWrite(greenLed[count - 2] , HIGH);

break;

case 3:

digitalWrite(redLed[count - 1] , LOW);

digitalWrite(redLed[count - 2] , LOW);

digitalWrite(redLed[count - 3] , LOW);

digitalWrite(greenLed[count - 1] , HIGH);

digitalWrite(greenLed[count - 2] , HIGH);

digitalWrite(greenLed[count - 3] , HIGH);

break;

case 4:

digitalWrite(redLed[count - 1] , LOW);

digitalWrite(redLed[count - 2] , LOW);

digitalWrite(redLed[count - 3] , LOW);

digitalWrite(redLed[count - 4] , LOW);

digitalWrite(greenLed[count - 1] , HIGH);

digitalWrite(greenLed[count - 2] , HIGH);

digitalWrite(greenLed[count - 3] , HIGH);

digitalWrite(greenLed[count - 4] , HIGH);

break;

}

}

}

If the second one contains a condition that the door should not be opened

if (flag >= 4) {

flag = 0;

}

if (count >= 4)

{

delay(5000);

count = 0;

digitalWrite(buzzer, LOW);

lcd.clear();

for (int i = 0; i < 4; i++) {

digitalWrite(greenLed[i] , LOW);

digitalWrite(redLed[i] , LOW);

}

}

delay(100);

// Serial.print("min");

// Serial.println(t.min);

// lcd.clear();

First, I defined each component of the LED, buzzer and sensor as I added the LCD

#include <ds3231.h>

#include <Wire.h>

unsigned long startMillis = 0;

unsigned long currentMillis;

const unsigned long period = 30000;

struct ts t;

// 3,4,6,

#include <LiquidCrystal.h>

#include <LiquidCrystal_I2C.h>

int ldr = A0;

#define red1 13

#define green1 12

#define red2 11

#define green2 10

#define red3 9

#define green3 8

#define red4 7

#define green4 6

#define buzzer 5

int redLed[4] = {red1 , red2, red3 , red4 };

int greenLed[4] = {green1 , green2 , green3 , green4};

int readldr = 0;

LiquidCrystal_I2C lcd(0x27, 16, 2); //0x27 is the LCD Address

int backlightPin = 3;

// time when to wake up

uint8_t wake_HOUR = 6;

uint8_t wake_MINUTE = 40;

uint8_t wake_SECOND = 0;

int count = 0 ;

int flag = 0;

And I set the LDR in addition to setting the time

Second, the void setup I defined all the components, are they out put or input

void setup() {

Serial.begin(9600);

pinMode(ldr , INPUT);

pinMode(green1 , OUTPUT);

pinMode(red1 , OUTPUT);

pinMode(green2 , OUTPUT);

pinMode(red2 , OUTPUT);

pinMode(green3 , OUTPUT);

pinMode(red3 , OUTPUT);

pinMode(green4 , OUTPUT);

pinMode(red4 , OUTPUT);

pinMode (buzzer, OUTPUT);

Wire.begin();

DS3231_init(DS3231_CONTROL_INTCN);

lcd.backlight();

lcd.init();

pinMode(backlightPin, OUTPUT);

analogWrite(backlightPin, 50); // For External Backlight Control

Then the void loap, the first if, has the first command to be executed

void loop() {

//readldr = analogRead(ldr);

currentMillis = millis();

Serial.print("count");

Serial.println(count); Serial.println(readldr);

// DS3231_get(&t);

// if (t.min % 2 == 0)

readldr = analogRead(ldr);

if ((currentMillis - startMillis) >= period && readldr > 700)

{

lcd.setCursor(0,0);

lcd.print("Tablet Time");

digitalWrite(redLed[count] , HIGH);

digitalWrite(greenLed[count] , LOW);

digitalWrite(buzzer, HIGH);

readldr = analogRead(ldr);

count++;

startMillis = currentMillis;

flag++;

delay(100);

}

Project Integration

After the first fabrication, I calculated everything again and modified the errors caused by the difference in the thickness of the wood. Then I installed the base first, then installed the body and installed it in the upper part of the base, then installed the moving part