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#include <WiFi.h>
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#include <WiFiManager.h>
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#include <Firebase_ESP_Client.h>
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#include <DHT.h>
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#include <Wire.h>
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#include <LiquidCrystal_I2C.h>
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#include <HTTPClient.h>
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#include <WiFiClientSecure.h>
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#include <time.h>
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// === KREDENSIAL FIREBASE ===
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#define API_KEY "AIzaSyDiYpuUPQUvK-1fOztrblPKKn3cMTDrlXU"
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#define DATABASE_URL "https://ecomoni-dc5fd-default-rtdb.firebaseio.com/"
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#define LEGACY_TOKEN "Sd9aMsdVYzEV7QkvaJh79j4kd3vaCClvBAC78yjn"
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// === PIN SENSOR DAN KOMPONEN ===
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#define DHTPIN 4
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#define DHTTYPE DHT22
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#define RAIN_SENSOR_PIN 5
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#define LDR_PIN 34
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#define LED_STATUS 26
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#define BUTTON_PIN 27
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// === OBJEK & VARIABEL GLOBAL ===
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FirebaseData fbdo;
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FirebaseAuth auth;
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FirebaseConfig config;
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DHT dht(DHTPIN, DHTTYPE);
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LiquidCrystal_I2C lcd(0x27, 16, 2);
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unsigned long lastUpdate = 0;
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unsigned long interval = 5000;
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unsigned long lastHistorySend = 0;
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unsigned long intervalHistory = 300000;
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int displayPage = 0;
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bool isOfflineMode = false;
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void setupNTP() {
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configTime(7 * 3600, 0, "pool.ntp.org", "time.nist.gov");
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struct tm timeinfo;
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Serial.print("Sinkronisasi waktu NTP...");
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while (!getLocalTime(&timeinfo)) {
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Serial.print(".");
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delay(500);
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}
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Serial.println(" [BERHASIL]");
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Serial.print("Waktu sekarang: ");
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Serial.println(&timeinfo, "%Y-%m-%d %H:%M:%S");
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}
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void updateIntervalHistoryFromFirebase() {
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if (Firebase.RTDB.getInt(&fbdo, "/threshold/interval_history")) {
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if (fbdo.dataType() == "int") {
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int interval_minutes = fbdo.intData();
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intervalHistory = interval_minutes * 60000UL;
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Serial.print("Interval diperbarui: ");
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Serial.println(intervalHistory);
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}
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} else {
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Serial.print("Gagal mengambil interval_history: ");
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Serial.println(fbdo.errorReason());
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}
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}
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void setup() {
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Serial.begin(115200);
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dht.begin();
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Wire.begin(22, 21);
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lcd.init();
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lcd.backlight();
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pinMode(RAIN_SENSOR_PIN, INPUT);
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pinMode(LED_STATUS, OUTPUT);
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pinMode(BUTTON_PIN, INPUT_PULLUP);
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digitalWrite(LED_STATUS, LOW);
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lcd.setCursor(0, 0);
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lcd.print("Menghubungkan...");
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WiFiManager wm;
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wm.setTimeout(60); // 1 menit
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if (!wm.autoConnect("EcoMonitor-Setup")) {
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Serial.println("Gagal konek WiFi. Mode offline.");
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lcd.clear();
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lcd.setCursor(0, 0);
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lcd.print("Mode Offline");
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isOfflineMode = true;
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delay(2000);
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} else {
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Serial.println("WiFi Terhubung!");
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lcd.clear();
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lcd.setCursor(0, 0);
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lcd.print("WiFi Terhubung");
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digitalWrite(LED_STATUS, HIGH);
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delay(2000);
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setupNTP();
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config.api_key = API_KEY;
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config.database_url = DATABASE_URL;
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config.signer.tokens.legacy_token = LEGACY_TOKEN;
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Firebase.begin(&config, &auth);
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Firebase.reconnectWiFi(true);
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updateIntervalHistoryFromFirebase();
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lcd.clear();
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}
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}
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void loop() {
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// === Tombol untuk masuk mode konfigurasi WiFi (bisa online/offline) ===
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if (digitalRead(BUTTON_PIN) == LOW) {
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Serial.println("Tombol ditekan. Masuk konfigurasi WiFi...");
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lcd.clear();
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lcd.setCursor(0, 0);
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lcd.print("Config WiFi...");
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delay(1000);
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WiFiManager wm;
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wm.resetSettings(); // Reset kredensial WiFi
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wm.setTimeout(120); // Timeout 2 menit
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wm.startConfigPortal("EcoMonitor-Setup");
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ESP.restart(); // Restart setelah config
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}
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// === Mode Offline ===
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if (isOfflineMode) {
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float suhu = dht.readTemperature();
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float kelembaban = dht.readHumidity();
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int hujan_status = digitalRead(RAIN_SENSOR_PIN);
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int ldr_raw = analogRead(LDR_PIN);
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int lux = map(ldr_raw, 0, 4095, 1000, 1);
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lux = constrain(lux, 1, 1000);
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String kondisi_hujan = (hujan_status == 1) ? "Cerah" : "Hujan";
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lcd.clear();
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switch (displayPage) {
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case 0:
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lcd.setCursor(0, 0);
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lcd.print(" Ecomonitor");
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break;
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case 1:
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lcd.setCursor(0, 0);
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lcd.print("Suhu:");
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lcd.print(suhu, 0);
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lcd.print((char)223);
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lcd.print("C");
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lcd.setCursor(0, 1);
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lcd.print("Kelembaban:");
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lcd.print(kelembaban, 0);
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lcd.print("%");
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break;
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case 2:
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lcd.setCursor(0, 0);
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lcd.print("Cahaya:");
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lcd.print(lux);
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lcd.print(" Lux");
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lcd.setCursor(0, 1);
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lcd.print("Cuaca:");
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lcd.print(kondisi_hujan);
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break;
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}
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displayPage = (displayPage + 1) % 3;
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delay(3000);
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return;
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}
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// === Mode Online ===
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if (millis() - lastUpdate >= interval && Firebase.ready()) {
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lastUpdate = millis();
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float suhu = dht.readTemperature();
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float kelembabanMentah = dht.readHumidity();
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float kelembaban = kelembabanMentah * 0.51;
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kelembaban = constrain(kelembaban, 0, 100);
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int hujan_status = digitalRead(RAIN_SENSOR_PIN);
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int ldr_raw = analogRead(LDR_PIN);
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int lux = map(ldr_raw, 0, 4095, 1000, 1);
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lux = constrain(lux, 1, 1000);
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String kondisi_hujan = (hujan_status == 1) ? "Cerah" : "Hujan";
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Serial.printf("Suhu: %.2f °C\n", suhu);
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Serial.printf("Kelembaban: %.2f %%\n", kelembaban);
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Serial.printf("Cuaca: %s\n", kondisi_hujan.c_str());
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Serial.printf("Cahaya: %d lux\n", lux);
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lcd.clear();
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switch (displayPage) {
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case 0:
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lcd.setCursor(0, 0);
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lcd.print(" Ecomonitor");
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break;
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case 1:
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lcd.setCursor(0, 0);
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lcd.print("Suhu:");
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lcd.print(suhu, 0);
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lcd.print((char)223);
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lcd.print("C");
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lcd.setCursor(0, 1);
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lcd.print("Kelembaban:");
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lcd.print(kelembaban, 0);
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lcd.print("%");
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break;
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case 2:
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lcd.setCursor(0, 0);
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lcd.print("Cahaya:");
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lcd.print(lux);
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lcd.print(" Lux");
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lcd.setCursor(0, 1);
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lcd.print("Cuaca:");
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lcd.print(kondisi_hujan);
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break;
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}
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displayPage = (displayPage + 1) % 3;
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delay(3000);
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Firebase.RTDB.setFloat(&fbdo, "/sensor/suhu", suhu);
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Firebase.RTDB.setFloat(&fbdo, "/sensor/kelembaban", kelembaban);
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Firebase.RTDB.setString(&fbdo, "/sensor/sensor_hujan", kondisi_hujan);
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Firebase.RTDB.setInt(&fbdo, "/sensor/intensitas_cahaya", lux);
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if (millis() - lastHistorySend >= intervalHistory) {
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lastHistorySend = millis();
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updateIntervalHistoryFromFirebase();
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time_t now;
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struct tm timeinfo;
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if (!getLocalTime(&timeinfo)) {
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Serial.println("Gagal mendapatkan waktu!");
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return;
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}
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char isoTime[30];
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strftime(isoTime, sizeof(isoTime), "%Y-%m-%dT%H:%M:%S+07:00", &timeinfo);
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String jsonPayload = "{";
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jsonPayload += "\"intensitas_cahaya\":" + String(lux) + ",";
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jsonPayload += "\"kelembaban\":" + String(kelembaban) + ",";
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jsonPayload += "\"sensor_hujan\":" + String((hujan_status == 0) ? "true" : "false") + ",";
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jsonPayload += "\"suhu\":" + String(suhu) + ",";
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jsonPayload += "\"timestamp\":\"" + String(isoTime) + "\"}";
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WiFiClientSecure client;
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client.setInsecure();
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HTTPClient http;
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http.begin(client, "https://ecomonitor-api.vercel.app/api/kirimdata");
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http.addHeader("Content-Type", "application/json");
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int httpResponseCode = http.POST(jsonPayload);
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if (httpResponseCode > 0) {
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Serial.printf("Data history terkirim (%d): %s\n", httpResponseCode, http.getString().c_str());
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} else {
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Serial.printf("Gagal kirim data history: %s\n", http.errorToString(httpResponseCode).c_str());
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}
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http.end();
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}
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}
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}
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