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	- Project: **Lamp Control**
	- Source Code NOT compiled for: Arduino Uno
	- Source Code created on: 2024-11-13 00:41:31

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
	/* Control an LED based on LDR sensor readings, */
	/* displaying the light intensity on a LiquidCrystal */
	/* I2C LCD. The LED will turn on in low light and off */
	/* in bright conditions. */
/****** END SYSTEM REQUIREMENTS *****/

/* START CODE */

/****** DEFINITION OF LIBRARIES *****/
#include <LiquidCrystal_I2C.h> // https://github.com/marcoschwartz/LiquidCrystal_I2C

/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);

/****** DEFINITION OF LIBRARIES CLASS INSTANCES*****/
LiquidCrystal_I2C lcd(0x27, 16, 2); // Initialize the LCD with I2C address 0x27, 16 columns and 2 rows

int sensorPin = A0; 
int sensorValue = 0;

void setup(void)
{
    // Initialize serial communication
    Serial.begin(9600);   
    // Set pin 6 as an output for the LED
    pinMode(6, OUTPUT);   
    // Initialize the LCD
    lcd.begin();   
    lcd.print("LDR Lampu Otomatis");   
    lcd.setCursor(0, 1);   
    lcd.print("Praktek Otodidak");   
    delay(3000);   
    lcd.clear(); 
}

void loop(void)
{
    // Read the sensor value from the LDR
    sensorValue = analogRead(sensorPin);   
    Serial.println(sensorValue);  
    // Convert the sensor value to voltage
    float voltage = sensorValue * (5.0 / 1023.0);   
    Serial.println(voltage);  

    // Control the LED based on light intensity
    if (voltage <= 1) {     
        digitalWrite(6, HIGH); // Turn on the LED in low light
        lcd.clear();     
        lcd.setCursor(0, 0);     
        lcd.print("Volt : ");     
        lcd.print(voltage);     
        lcd.setCursor(0, 1);     
        lcd.print("Lampu Nyala");     
        delay(1000);     
    } 
    else {     
        digitalWrite(6, LOW); // Turn off the LED in bright light
        lcd.clear();      
        lcd.setCursor(0, 0);     
        lcd.print("Volt : ");     
        lcd.print(voltage);     
        lcd.setCursor(0, 1);     
        lcd.print("Lampu Mati");     
        delay(1000);     
    } 
}

/* END CODE */