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smart_selada.ino

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+#include <WiFi.h>
+#include <Firebase_ESP_Client.h>
+#include <addons/TokenHelper.h>
+#include <addons/RTDBHelper.h>
+
+// ================= KONFIGURASI WIFI =================
+#define WIFI_SSID     "Waris"
+#define WIFI_PASSWORD "bayardulu"
+
+// ================= KONFIGURASI FIREBASE =================
+#define DATABASE_URL    "https://sigesit-48741-default-rtdb.firebaseio.com"
+#define DATABASE_SECRET "eaUKMEaqkEdhqUfPoMjdkxLkX0ay7R3W7luQIDrQ"
+
+// ================= KONFIGURASI PIN =================
+const int SENSOR_PIN = 34;
+const int RELAY_PIN  = 25;
+
+// ================= KALIBRASI SENSOR =================
+const int SOIL_DRY = 3200;
+const int SOIL_WET = 1200;
+
+// ================= FIREBASE OBJECT =================
+FirebaseData fbdo;
+FirebaseAuth auth;
+FirebaseConfig config;
+
+// ================= VARIABEL KONTROL =================
+unsigned long prevMillis = 0;
+const long INTERVAL = 3000; // Update setiap 3 detik
+
+bool isManual = false;
+int pumpStatus = 0;
+
+// Untuk mendeteksi perubahan status pompa
+bool lastPumpState = false;
+
+void setup() {
+
+  Serial.begin(115200);
+  delay(1000);
+
+  Serial.println("\n--- SISTEM SIGESIT DIMULAI ---");
+
+  pinMode(SENSOR_PIN, INPUT);
+  pinMode(RELAY_PIN, OUTPUT);
+
+  // Relay OFF saat awal
+  digitalWrite(RELAY_PIN, HIGH);
+
+  // ================= KONEKSI WIFI =================
+  WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
+
+  Serial.print("Menghubungkan ke WiFi: ");
+  Serial.println(WIFI_SSID);
+
+  int timeout = 0;
+
+  while (WiFi.status() != WL_CONNECTED && timeout < 20) {
+
+    delay(500);
+    Serial.print(".");
+    timeout++;
+  }
+
+  if (WiFi.status() == WL_CONNECTED) {
+
+    Serial.println("\n[OK] WiFi Terhubung!");
+    Serial.print("IP Address: ");
+    Serial.println(WiFi.localIP());
+
+  } else {
+
+    Serial.println("\n[GAGAL] WiFi tidak terhubung!");
+  }
+
+  // ================= FIREBASE =================
+  config.database_url = DATABASE_URL;
+  config.signer.tokens.legacy_token = DATABASE_SECRET;
+
+  Firebase.reconnectWiFi(true);
+  Firebase.begin(&config, &auth);
+
+  configTime(0, 0, "pool.ntp.org");
+
+  Serial.println("[OK] Firebase Siap!");
+}
+
+void loop() {
+
+  if (Firebase.ready()) {
+
+    // =================================================
+    // A. KONTROL RESPONSIVE DARI FIREBASE
+    // =================================================
+
+    if (Firebase.RTDB.getBool(&fbdo, "/sensor/is_manual")) {
+
+      isManual = fbdo.to<bool>();
+    }
+
+    if (isManual) {
+
+      if (Firebase.RTDB.getInt(&fbdo, "/sensor/pump_status")) {
+
+        pumpStatus = fbdo.to<int>();
+
+        digitalWrite(
+          RELAY_PIN,
+          (pumpStatus == 1) ? LOW : HIGH
+        );
+      }
+    }
+
+    // =================================================
+    // B. PEMBACAAN SENSOR
+    // =================================================
+
+    unsigned long currentMillis = millis();
+
+    if (currentMillis - prevMillis >= INTERVAL) {
+
+      prevMillis = currentMillis;
+
+      int nilaiADC = analogRead(SENSOR_PIN);
+
+      int soilPercent = map(
+                            nilaiADC,
+                            SOIL_DRY,
+                            SOIL_WET,
+                            0,
+                            100
+                          );
+
+      soilPercent = constrain(soilPercent, 0, 100);
+
+      // =================================================
+      // C. MODE OTOMATIS POMPA
+      // =================================================
+
+      if (!isManual) {
+
+        if (soilPercent < 50) {
+
+          digitalWrite(RELAY_PIN, LOW);
+          pumpStatus = 1;
+
+        } else if (soilPercent > 56) {
+
+          digitalWrite(RELAY_PIN, HIGH);
+          pumpStatus = 0;
+        }
+      }
+
+      // =================================================
+      // D. SERIAL MONITOR
+      // =================================================
+
+      Serial.print("Kelembaban: ");
+      Serial.print(soilPercent);
+      Serial.print("% | ");
+
+      Serial.print("Pompa: ");
+      Serial.print(pumpStatus == 1 ? "NYALA" : "MATI");
+
+      Serial.print(" | Mode: ");
+      Serial.println(isManual ? "MANUAL" : "OTOMATIS");
+
+      // =================================================
+      // E. UPDATE REALTIME KE FIREBASE
+      // =================================================
+
+      FirebaseJson json;
+
+      json.set("soil_percent", soilPercent);
+      json.set("pump_status", pumpStatus);
+      json.set("is_manual", isManual);
+
+      if (!Firebase.RTDB.updateNode(&fbdo, "/sensor", &json)) {
+
+        Serial.print("Gagal Update Firebase: ");
+        Serial.println(fbdo.errorReason());
+      }
+
+      // =================================================
+      // F. RIWAYAT PENYIRAMAN
+      // =================================================
+
+      // ================= POMPA MENYALA =================
+      if (pumpStatus == 1 && !lastPumpState) {
+
+        FirebaseJson history;
+
+        history.set("timestamp/.sv", "timestamp");
+        history.set("value", soilPercent);
+        history.set("pump", "Penyiraman Aktif");
+
+        if (Firebase.RTDB.pushJSON(&fbdo, "/history", &history)) {
+
+          Serial.println(">>> Penyiraman Aktif");
+
+        } else {
+
+          Serial.print("Gagal Simpan Riwayat: ");
+          Serial.println(fbdo.errorReason());
+        }
+      }
+
+      // ================= POMPA MATI =================
+      if (pumpStatus == 0 && lastPumpState) {
+
+        FirebaseJson history;
+
+        history.set("timestamp/.sv", "timestamp");
+        history.set("value", soilPercent);
+        history.set("pump", "Penyiraman Selesai");
+
+        if (Firebase.RTDB.pushJSON(&fbdo, "/history", &history)) {
+
+          Serial.println(">>> Penyiraman Selesai");
+
+        } else {
+
+          Serial.print("Gagal Simpan Riwayat: ");
+          Serial.println(fbdo.errorReason());
+        }
+      }
+
+      // Simpan status pompa sebelumnya
+      lastPumpState = (pumpStatus == 1);
+    }
+
+  } else {
+
+    static unsigned long lastError = 0;
+
+    if (millis() - lastError > 5000) {
+
+      lastError = millis();
+      Serial.println("Menunggu Firebase Ready...");
+    }
+  }
+
+  // =================================================
+  // AUTO RECONNECT WIFI
+  // =================================================
+
+  if (WiFi.status() != WL_CONNECTED) {
+
+    WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
+  }
+}