//Welcome in the project Moch Rijki Supriyatna:("MRS_Iky")
//Smart Greenhouse Otomatis
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include "DHT.h"

// Pin setup
#define DHTPIN 4
#define DHTTYPE DHT22

#define SOIL_PIN 34        // Potensiometer mewakili kelembaban tanah
#define LDR_PIN 35         // Sensor cahaya (LDR)
#define FAN_RELAY 12
#define PUMP_RELAY 14
#define LIGHT_RELAY 27
#define BUZZER_PIN 26
#define LED_PIN 25

// Thresholds
#define TEMP_THRESHOLD 30
#define SOIL_THRESHOLD 400
#define LIGHT_THRESHOLD 500

// Inisialisasi
DHT dht(DHTPIN, DHTTYPE);
LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  Serial.begin(115200);
    dht.begin();
      lcd.init();
        lcd.backlight();

          pinMode(FAN_RELAY, OUTPUT);
            pinMode(PUMP_RELAY, OUTPUT);
              pinMode(LIGHT_RELAY, OUTPUT);
                pinMode(BUZZER_PIN, OUTPUT);
                  pinMode(LED_PIN, OUTPUT);

                    digitalWrite(FAN_RELAY, LOW);
                      digitalWrite(PUMP_RELAY, LOW);
                        digitalWrite(LIGHT_RELAY, LOW);
                        }

                        void loop() {
                          float temp = dht.readTemperature();
                            float hum = dht.readHumidity();
                              int soil = analogRead(SOIL_PIN);
                                int light = analogRead(LDR_PIN);

                                  Serial.printf("Temp: %.2f | Hum: %.2f | Soil: %d | Light: %d\n", temp, hum, soil, light);

                                    // LCD Output
                                      lcd.setCursor(0, 0);
                                        lcd.print("T:");
                                          lcd.print(temp);
                                            lcd.print(" H:");
                                              lcd.print(hum);

                                                lcd.setCursor(0, 1);
                                                  lcd.print("S:");
                                                    lcd.print(soil);
                                                      lcd.print(" L:");
                                                        lcd.print(light);

                                                          // Logic
                                                            digitalWrite(FAN_RELAY, temp > TEMP_THRESHOLD ? HIGH : LOW);
                                                              digitalWrite(PUMP_RELAY, soil < SOIL_THRESHOLD ? HIGH : LOW);
                                                                digitalWrite(LIGHT_RELAY, light < LIGHT_THRESHOLD ? HIGH : LOW);

                                                                  // Alarm
                                                                    bool danger = (temp > 35 || soil < 300);
                                                                      digitalWrite(BUZZER_PIN, danger ? HIGH : LOW);
                                                                        digitalWrite(LED_PIN, danger ? HIGH : LOW);

                                                                          delay(2000);
                                                                          }