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- Project: "Climate Controller"
- Source Code compiled for: Arduino Uno
- Source Code created on: 2024-06-30 03:09:15
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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
/* sensor DHT22 untuk suhu dan kelembapan, dan LED */
/* RGB. Gunakan LCD untuk menampilkan suhu dan */
/* kelembapan. Kontrol LED RGB berdasarkan ambang */
/* batas suhu. jika suhu rendah berwarna hijau dan */
/* jika suhu tinggi warna merah */
/****** END SYSTEM REQUIREMENTS *****/
/****** DEFINITION OF LIBRARIES *****/
#include
#include //https://github.com/marcoschwartz/LiquidCrystal_I2C
#include //https://github.com/adafruit/DHT-sensor-library
/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);
void updateOutputs(void);
/***** DEFINITION OF DIGITAL INPUT PINS *****/
const uint8_t DHT22_DOUT_PIN_D5 = 5;
/***** DEFINITION OF DIGITAL OUTPUT PINS *****/
const uint8_t led1_LEDRGB_Red_PIN_D3 = 3;
const uint8_t led1_LEDRGB_Green_PIN_D4 = 4;
/***** DEFINITION OF I2C PINS *****/
const uint8_t lcd_LCD1602I2C_I2C_PIN_SDA_A4 = A4;
const uint8_t lcd_LCD1602I2C_I2C_PIN_SCL_A5 = A5;
const uint8_t lcd_LCD1602I2C_I2C_SLAVE_ADDRESS = 0x27; // 39 in decimal
/***** DEFINITION OF OUTPUT RAW VARIABLES *****/
/***** used to store raw data *****/
bool led1_LEDRGB_Red_PIN_D3_rawData = 0;
bool led1_LEDRGB_Green_PIN_D4_rawData = 0;
/***** DEFINITION OF OUTPUT PHYSICAL VARIABLES *****/
/***** used to store data after characteristic curve transformation *****/
float led1_LEDRGB_Red_PIN_D3_phyData = 0.0;
float led1_LEDRGB_Green_PIN_D4_phyData = 0.0;
/****** DEFINITION OF LIBRARIES CLASS INSTANCES*****/
LiquidCrystal_I2C lcd(lcd_LCD1602I2C_I2C_SLAVE_ADDRESS, 16, 2); // Initialize the LCD with address, columns, and rows
#define DHTTYPE DHT22 // DHT 22 (AM2302)
DHT dht(DHT22_DOUT_PIN_D5, DHTTYPE); // Initialize DHT sensor for DHT22
void setup(void)
{
// put your setup code here, to run once:
pinMode(DHT22_DOUT_PIN_D5, INPUT_PULLUP);
pinMode(led1_LEDRGB_Red_PIN_D3, OUTPUT);
pinMode(led1_LEDRGB_Green_PIN_D4, OUTPUT);
lcd.init(); // Initialize the LCD
lcd.backlight(); // Turn on the backlight
lcd.setCursor(0, 0); // Set cursor to column 0, row 0
lcd.print("Hello, world!"); // Print a message to the LCD
dht.begin(); // Initialize the DHT sensor
Serial.begin(9600); // Initialize serial communication
}
void loop(void)
{
// put your main code here, to run repeatedly:
updateOutputs(); // Refresh output data
delay(2000); // Wait a few seconds between measurements
float h = dht.readHumidity(); // Read humidity
float t = dht.readTemperature(); // Read temperature as Celsius
// Check if any reads failed and exit early (to try again).
if (isnan(h) || isnan(t)) {
Serial.println(F("Failed to read from DHT sensor!"));
return;
}
// Print the results to the Serial Monitor
Serial.print(F("Humidity: "));
Serial.print(h);
Serial.print(F("% Temperature: "));
Serial.print(t);
Serial.println(F("°C"));
// Update LCD display
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Temp: ");
lcd.print(t);
lcd.print(" C");
lcd.setCursor(0, 1);
lcd.print("Humidity: ");
lcd.print(h);
lcd.print(" %");
// Control RGB LED based on temperature
if (t < 25.0) {
// Temperature is low, turn on green LED
led1_LEDRGB_Green_PIN_D4_rawData = HIGH;
led1_LEDRGB_Red_PIN_D3_rawData = LOW;
} else {
// Temperature is high, turn on red LED
led1_LEDRGB_Green_PIN_D4_rawData = LOW;
led1_LEDRGB_Red_PIN_D3_rawData = HIGH;
}
updateOutputs(); // Refresh output data
}
void updateOutputs()
{
digitalWrite(led1_LEDRGB_Red_PIN_D3, led1_LEDRGB_Red_PIN_D3_rawData);
digitalWrite(led1_LEDRGB_Green_PIN_D4, led1_LEDRGB_Green_PIN_D4_rawData);
}
/* END CODE */