diff --git a/arduino_fixed_code.ino b/arduino_fixed_code.ino
deleted file mode 100644
index e69de29..0000000
diff --git a/arduino_fixed_code/arduino_fixed_code.ino b/arduino_fixed_code/arduino_fixed_code.ino
deleted file mode 100644
index 540cebb..0000000
--- a/arduino_fixed_code/arduino_fixed_code.ino
+++ /dev/null
@@ -1,375 +0,0 @@
-/**
- * ============================================
- * Smart Rack Security System - ESP32
- * PIR + Reed Switch + SW420 + LoRa + Laravel API
- * ============================================
- */
-
-#include <WiFi.h>
-#include <HTTPClient.h>
-#include <WiFiClientSecure.h>
-#include <ArduinoJson.h>
-#include <SPI.h>
-#include <LoRa.h>
-
-// ============================================
-// WIFI
-// ============================================
-const char* ssid     = "gege";
-const char* password = "biasaaja";
-
-// GANTI DENGAN IP LARAVEL KAMU
-const char* API_BASE = "https://keamanan-rak-barang-production.up.railway.app/api";
-
-// ============================================
-// DEVICE
-// ============================================
-const int DEVICE_ID = 1;
-const String NODE_ID = "LORA_001";
-
-// ============================================
-// PIN SENSOR
-// ============================================
-#define PIR_PIN      33
-#define REED_PIN     32
-#define SW420_PIN    34
-#define BUZZER       25
-#define LED_MERAH    13
-#define LED_HIJAU    4
-
-// ============================================
-// PIN LORA SX1278 RA-02
-// ============================================
-#define LORA_SS      27
-#define LORA_RST     14
-#define LORA_DIO0    26
-
-// ============================================
-// VARIABEL
-// ============================================
-int pirState;
-int reedState;
-int vibrationState;
-int lastVibration = LOW;
-bool motionActive = false;
-bool doorOpen     = false;
-unsigned long motionStartTime = 0;
-unsigned long doorOpenTime    = 0;
-unsigned long lastHeartbeat   = 0;
-const unsigned long HEARTBEAT_INTERVAL = 300000;
-
-// ============================================
-// LED
-// ============================================
-void setLED(bool bahaya) {
-  digitalWrite(LED_MERAH, bahaya ? HIGH : LOW);
-  digitalWrite(LED_HIJAU, bahaya ? LOW : HIGH);
-}
-
-// ============================================
-// BUZZER
-// ============================================
-void buzzerPIR() {
-  digitalWrite(BUZZER, HIGH);
-  delay(300);
-  digitalWrite(BUZZER, LOW);
-}
-
-void buzzerREED() {
-  for (int i = 0; i < 2; i++) {
-    digitalWrite(BUZZER, HIGH);
-    delay(100);
-    digitalWrite(BUZZER, LOW);
-    delay(100);
-  }
-}
-
-void buzzerGETAR() {
-  for (int i = 0; i < 3; i++) {
-    digitalWrite(BUZZER, HIGH);
-    delay(80);
-    digitalWrite(BUZZER, LOW);
-    delay(80);
-  }
-}
-
-void buzzerStartup() {
-  for (int i = 0; i < 2; i++) {
-    digitalWrite(BUZZER, HIGH);
-    delay(200);
-    digitalWrite(BUZZER, LOW);
-    delay(100);
-  }
-}
-
-// ============================================
-// WIFI
-// ============================================
-void setupWifi() {
-  Serial.println("Menghubungkan WiFi: " + String(ssid));
-  WiFi.mode(WIFI_STA);
-  WiFi.begin(ssid, password);
-
-  int attempt = 0;
-  while (WiFi.status() != WL_CONNECTED && attempt < 30) {
-    delay(500);
-    Serial.print(".");
-    attempt++;
-  }
-
-  if (WiFi.status() == WL_CONNECTED) {
-    Serial.println("");
-    Serial.println("WiFi Connected!");
-    Serial.println("IP: " + WiFi.localIP().toString());
-  } else {
-    Serial.println("");
-    Serial.println("WiFi gagal terhubung. Cek SSID/Password.");
-    Serial.println("Pastikan hotspot 2.4GHz dan sudah aktif.");
-  }
-}
-
-void checkWifi() {
-  if (WiFi.status() != WL_CONNECTED) {
-    Serial.println("WiFi putus, reconnecting...");
-    WiFi.disconnect();
-    delay(1000);
-    WiFi.begin(ssid, password);
-
-    int attempt = 0;
-    while (WiFi.status() != WL_CONNECTED && attempt < 20) {
-      delay(500);
-      Serial.print(".");
-      attempt++;
-    }
-
-    if (WiFi.status() == WL_CONNECTED) {
-      Serial.println("\nWiFi terhubung kembali! IP: " + WiFi.localIP().toString());
-    } else {
-      Serial.println("\nGagal reconnect. Tunggu 10 detik...");
-      delay(10000); // tunggu lebih lama sebelum coba lagi
-    }
-  }
-}
-
-// ============================================
-// HTTP POST
-// ============================================
-bool httpPost(String endpoint, String jsonBody) {
-  if (WiFi.status() != WL_CONNECTED) {
-    Serial.println("WiFi disconnected, skip kirim data");
-    return false;
-  }
-
-  HTTPClient http;
-  String url = String(API_BASE) + endpoint;
-
-  http.begin(url);
-  http.addHeader("Content-Type", "application/json");
-  http.addHeader("Accept", "application/json");
-  http.setTimeout(8000);
-
-  int httpCode = http.POST(jsonBody);
-
-  if (httpCode > 0) {
-    String response = http.getString();
-    Serial.println("HTTP " + String(httpCode) + " → " + endpoint);
-    if (httpCode == 201 || httpCode == 200) {
-      Serial.println("✓ Data tersimpan");
-      http.end();
-      return true;
-    } else {
-      Serial.println("✗ Response: " + response.substring(0, 150));
-    }
-  } else {
-    Serial.println("✗ HTTP Error: " + String(httpCode));
-    Serial.println("  URL: " + url);
-    Serial.println("  Cek: server jalan? IP benar? Firewall?");
-  }
-
-  http.end();
-  return false;
-}
-
-// ============================================
-// KIRIM PIR
-// ============================================
-void kirimDataPIR(bool detected, int intensity, int duration, String zone) {
-  StaticJsonDocument<256> doc;
-  doc["device_id"]        = DEVICE_ID;
-  doc["motion_detected"]  = detected;
-  doc["motion_intensity"] = intensity;
-  doc["duration_seconds"] = duration;
-  doc["detection_zone"]   = zone;
-
-  String body;
-  serializeJson(doc, body);
-  Serial.println("Kirim PIR → intensity=" + String(intensity) + " duration=" + String(duration) + "s");
-  httpPost("/pir/data", body);
-}
-
-// ============================================
-// KIRIM GETARAN
-// ============================================
-void kirimDataGetaran(float x, float y, float z) {
-  StaticJsonDocument<256> doc;
-  doc["device_id"] = DEVICE_ID;
-  doc["x_axis"]    = x;
-  doc["y_axis"]    = y;
-  doc["z_axis"]    = z;
-  doc["threshold"] = 2.0;
-
-  String body;
-  serializeJson(doc, body);
-  float mag = sqrt(x*x + y*y + z*z);
-  Serial.println("Kirim Getaran → magnitude=" + String(mag, 2));
-  httpPost("/vibration/data", body);
-}
-
-// ============================================
-// KIRIM REED SWITCH
-// ============================================
-void kirimDataReedSwitch(bool opened, int duration) {
-  StaticJsonDocument<256> doc;
-  doc["device_id"]        = DEVICE_ID;
-  doc["door_opened"]      = opened;
-  doc["duration_seconds"] = duration;
-  doc["access_method"]    = "manual";
-  doc["door_location"]    = "rack";
-  doc["is_forced_entry"]  = false;
-
-  String body;
-  serializeJson(doc, body);
-  Serial.println("Kirim Reed Switch → opened=" + String(opened) + " duration=" + String(duration) + "s");
-  httpPost("/door-access/data", body);
-}
-
-// ============================================
-// HEARTBEAT
-// ============================================
-void kirimHeartbeat() {
-  String payload = "HEARTBEAT|" + NODE_ID;
-  LoRa.beginPacket();
-  LoRa.print(payload);
-  LoRa.endPacket();
-  Serial.println("Heartbeat terkirim. Uptime: " + String(millis()/1000) + "s");
-}
-
-// ============================================
-// SETUP
-// ============================================
-void setup() {
-  Serial.begin(115200);
-  delay(1000);
-
-  // SENSOR
-  pinMode(PIR_PIN,   INPUT);
-  pinMode(REED_PIN,  INPUT_PULLUP); // PULLUP untuk reed switch
-  pinMode(SW420_PIN, INPUT);
-
-  // OUTPUT
-  pinMode(BUZZER,    OUTPUT);
-  pinMode(LED_MERAH, OUTPUT);
-  pinMode(LED_HIJAU, OUTPUT);
-
-  digitalWrite(BUZZER, LOW);
-  setLED(false); // LED hijau menyala default
-
-  Serial.println("=================================");
-  Serial.println("  SMART RACK SECURITY SYSTEM");
-  Serial.println("=================================");
-
-  // WIFI
-  setupWifi();
-
-  // LORA
-  LoRa.setPins(LORA_SS, LORA_RST, LORA_DIO0);
-  if (!LoRa.begin(433E6)) {
-    Serial.println("LoRa gagal! Lanjut tanpa LoRa.");
-  } else {
-    LoRa.setTxPower(17);
-    Serial.println("LoRa OK");
-  }
-
-  buzzerStartup();
-  Serial.println("System Ready!");
-  Serial.println("API: " + String(API_BASE));
-  Serial.println("Device ID: " + String(DEVICE_ID));
-}
-
-// ============================================
-// LOOP
-// ============================================
-void loop() {
-  checkWifi();
-
-  pirState       = digitalRead(PIR_PIN);
-  reedState      = digitalRead(REED_PIN);  // LOW = tertutup, HIGH = terbuka
-  vibrationState = digitalRead(SW420_PIN);
-
-  // =========================================
-  // PIR - Deteksi Gerakan
-  // =========================================
-  if (pirState == HIGH && !motionActive) {
-    motionActive    = true;
-    motionStartTime = millis();
-    Serial.println(">>> PIR: Gerakan terdeteksi!");
-    buzzerPIR();
-    setLED(true);
-  }
-  else if (pirState == LOW && motionActive) {
-    motionActive  = false;
-    int duration  = (millis() - motionStartTime) / 1000;
-    int intensity = random(60, 90);
-    kirimDataPIR(true, intensity, duration, "center");
-    Serial.println(">>> PIR: Gerakan selesai, durasi=" + String(duration) + "s");
-  }
-
-  // =========================================
-  // REED SWITCH - Status Rak
-  // =========================================
-  if (reedState == HIGH && !doorOpen) {
-    doorOpen     = true;
-    doorOpenTime = millis();
-    Serial.println(">>> Reed Switch: Rak terbuka!");
-    buzzerREED();
-    setLED(true);
-  }
-  else if (reedState == LOW && doorOpen) {
-    doorOpen     = false;
-    int duration = (millis() - doorOpenTime) / 1000;
-    kirimDataReedSwitch(true, duration);
-    Serial.println(">>> Reed Switch: Rak tertutup, durasi=" + String(duration) + "s");
-  }
-
-  // =========================================
-  // SW-420 - Deteksi Getaran
-  // =========================================
-  if (vibrationState == HIGH && lastVibration == LOW) {
-    Serial.println(">>> SW-420: Getaran terdeteksi!");
-    float x = random(-300, 300) / 100.0;
-    float y = random(-300, 300) / 100.0;
-    float z = random(80, 120)   / 100.0;
-    buzzerGETAR();
-    setLED(true);
-    kirimDataGetaran(x, y, z);
-  }
-
-  // =========================================
-  // Kembali normal jika tidak ada bahaya
-  // =========================================
-  if (!motionActive && !doorOpen && vibrationState == LOW) {
-    setLED(false);
-  }
-
-  lastVibration = vibrationState;
-
-  // =========================================
-  // HEARTBEAT setiap 5 menit
-  // =========================================
-  if (millis() - lastHeartbeat >= HEARTBEAT_INTERVAL) {
-    kirimHeartbeat();
-    lastHeartbeat = millis();
-  }
-
-  delay(300);
-}
diff --git a/arduino_fixed_code/esp32_gateway_receiver.ino b/arduino_fixed_code/esp32_gateway_receiver.ino
new file mode 100644
index 0000000..b8aae20
--- /dev/null
+++ b/arduino_fixed_code/esp32_gateway_receiver.ino
@@ -0,0 +1,343 @@
+/**
+ * ============================================
+ * Smart Rack Security System
+ * ESP32 GATEWAY (RECEIVER) — Di luar rak
+ * 
+ * Fungsi  : Terima data LoRa dari Node, forward ke Railway API
+ * Komunikasi : LoRa SX1278 (RX) + WiFi (HTTPS ke Railway)
+ * TIDAK ada sensor di sini
+ * ============================================
+ */
+
+#include <WiFi.h>
+#include <HTTPClient.h>
+#include <WiFiClientSecure.h>
+#include <ArduinoJson.h>
+#include <SPI.h>
+#include <LoRa.h>
+
+// ============================================
+// KONFIGURASI — SESUAIKAN
+// ============================================
+const char* WIFI_SSID     = "gege";
+const char* WIFI_PASSWORD = "biasaaja";
+const char* API_BASE      = "https://keamanan-rak-barang-production.up.railway.app/api";
+const int   DEVICE_ID     = 1;   // ID device di database Railway
+
+// ============================================
+// PIN LORA SX1278 RA-02
+// ============================================
+#define LORA_SS      27
+#define LORA_RST     14
+#define LORA_DIO0    26
+#define LORA_FREQ    433E6   // Harus sama dengan Node Sender!
+
+// ============================================
+// PIN LED STATUS GATEWAY (opsional)
+// ============================================
+#define LED_WIFI     2    // LED bawaan ESP32 — nyala = WiFi OK
+#define LED_LORA     4    // Kedip = terima paket LoRa
+
+// ============================================
+// STATISTIK
+// ============================================
+unsigned long totalReceived = 0;
+unsigned long totalSent     = 0;
+unsigned long totalFailed   = 0;
+unsigned long lastStatusPrint = 0;
+
+// ============================================
+// SETUP WIFI
+// ============================================
+void setupWifi() {
+  Serial.println("[WiFi] Menghubungkan ke: " + String(WIFI_SSID));
+  WiFi.mode(WIFI_STA);
+  WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
+
+  int attempt = 0;
+  while (WiFi.status() != WL_CONNECTED && attempt < 40) {
+    delay(500);
+    Serial.print(".");
+    attempt++;
+  }
+
+  if (WiFi.status() == WL_CONNECTED) {
+    Serial.println("\n[WiFi] ✓ Terhubung! IP: " + WiFi.localIP().toString());
+    digitalWrite(LED_WIFI, HIGH);
+  } else {
+    Serial.println("\n[WiFi] ✗ Gagal. Cek SSID/Password atau pastikan 2.4GHz.");
+    digitalWrite(LED_WIFI, LOW);
+  }
+}
+
+void checkWifi() {
+  if (WiFi.status() != WL_CONNECTED) {
+    Serial.println("[WiFi] Putus, reconnecting...");
+    digitalWrite(LED_WIFI, LOW);
+    WiFi.disconnect();
+    delay(1000);
+    WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
+
+    int attempt = 0;
+    while (WiFi.status() != WL_CONNECTED && attempt < 20) {
+      delay(500);
+      Serial.print(".");
+      attempt++;
+    }
+
+    if (WiFi.status() == WL_CONNECTED) {
+      Serial.println("\n[WiFi] ✓ Terhubung kembali!");
+      digitalWrite(LED_WIFI, HIGH);
+    } else {
+      Serial.println("\n[WiFi] ✗ Gagal reconnect.");
+    }
+  }
+}
+
+// ============================================
+// HTTP POST KE RAILWAY API
+// ============================================
+bool httpPost(String endpoint, String jsonBody) {
+  if (WiFi.status() != WL_CONNECTED) {
+    Serial.println("[HTTP] Skip — WiFi tidak terhubung");
+    return false;
+  }
+
+  WiFiClientSecure client;
+  client.setInsecure(); // Skip SSL verify — cukup untuk Railway
+
+  HTTPClient http;
+  String url = String(API_BASE) + endpoint;
+
+  http.begin(client, url);
+  http.addHeader("Content-Type", "application/json");
+  http.addHeader("Accept", "application/json");
+  http.setTimeout(10000);
+
+  int httpCode = http.POST(jsonBody);
+
+  if (httpCode > 0) {
+    if (httpCode == 200 || httpCode == 201) {
+      Serial.println("[HTTP] ✓ " + endpoint + " → " + String(httpCode));
+      http.end();
+      totalSent++;
+      return true;
+    } else {
+      String resp = http.getString();
+      Serial.println("[HTTP] ✗ " + endpoint + " → " + String(httpCode));
+      Serial.println("       " + resp.substring(0, 120));
+    }
+  } else {
+    Serial.println("[HTTP] ✗ Error: " + String(httpCode) + " — " + endpoint);
+  }
+
+  http.end();
+  totalFailed++;
+  return false;
+}
+
+// ============================================
+// PROSES PAKET PIR
+// ============================================
+void prosesPIR(String nodeId, String jsonStr) {
+  StaticJsonDocument<256> src;
+  if (deserializeJson(src, jsonStr) != DeserializationError::Ok) {
+    Serial.println("[PIR] JSON parse error");
+    return;
+  }
+
+  StaticJsonDocument<256> doc;
+  doc["device_id"]        = DEVICE_ID;
+  doc["motion_detected"]  = src["motion_detected"]  | false;
+  doc["motion_intensity"] = src["motion_intensity"]  | 50;
+  doc["duration_seconds"] = src["duration_seconds"]  | 0;
+  doc["detection_zone"]   = src["detection_zone"]    | "center";
+
+  String body;
+  serializeJson(doc, body);
+  Serial.println("[PIR] Node=" + nodeId + " → forward ke API");
+  httpPost("/pir/data", body);
+}
+
+// ============================================
+// PROSES PAKET REED SWITCH
+// ============================================
+void prosesREED(String nodeId, String jsonStr) {
+  StaticJsonDocument<256> src;
+  if (deserializeJson(src, jsonStr) != DeserializationError::Ok) {
+    Serial.println("[REED] JSON parse error");
+    return;
+  }
+
+  StaticJsonDocument<256> doc;
+  doc["device_id"]        = DEVICE_ID;
+  doc["door_opened"]      = src["door_opened"]      | false;
+  doc["duration_seconds"] = src["duration_seconds"] | 0;
+  doc["access_method"]    = src["access_method"]    | "manual";
+  doc["door_location"]    = src["door_location"]    | "rack";
+  doc["is_forced_entry"]  = src["is_forced_entry"]  | false;
+
+  String body;
+  serializeJson(doc, body);
+  Serial.println("[REED] Node=" + nodeId + " → forward ke API");
+  httpPost("/door-access/data", body);
+}
+
+// ============================================
+// PROSES PAKET GETARAN SW420
+// ============================================
+void prosesVIBRATION(String nodeId, String jsonStr) {
+  StaticJsonDocument<256> src;
+  if (deserializeJson(src, jsonStr) != DeserializationError::Ok) {
+    Serial.println("[VIBRATION] JSON parse error");
+    return;
+  }
+
+  StaticJsonDocument<256> doc;
+  doc["device_id"] = DEVICE_ID;
+  doc["x_axis"]    = src["x_axis"]    | 0.0;
+  doc["y_axis"]    = src["y_axis"]    | 0.0;
+  doc["z_axis"]    = src["z_axis"]    | 0.0;
+  doc["threshold"] = src["threshold"] | 2.0;
+
+  String body;
+  serializeJson(doc, body);
+  Serial.println("[VIBRATION] Node=" + nodeId + " → forward ke API");
+  httpPost("/vibration/data", body);
+}
+
+// ============================================
+// PROSES PAKET HEARTBEAT
+// ============================================
+void prosesHEARTBEAT(String nodeId, String jsonStr) {
+  StaticJsonDocument<128> src;
+  deserializeJson(src, jsonStr);
+  long uptime = src["uptime_s"] | 0;
+  Serial.println("[HEARTBEAT] Node=" + nodeId + " masih hidup, uptime=" + String(uptime) + "s");
+
+  // Kirim heartbeat ke API agar device tetap Online di dashboard
+  StaticJsonDocument<128> doc;
+  doc["node_id"]    = nodeId;
+  doc["gateway_id"] = "GATEWAY_001";
+  doc["payload"]    = "HEARTBEAT|" + nodeId;
+
+  String body;
+  serializeJson(doc, body);
+  httpPost("/lora/receive", body);
+}
+
+// ============================================
+// PARSE & ROUTE PAKET LORA
+// Format paket: TYPE|NODE_ID|{json}
+// ============================================
+void prosesPacket(String packet, int rssi, float snr) {
+  totalReceived++;
+
+  // Kedip LED tanda terima paket
+  digitalWrite(LED_LORA, HIGH); delay(50); digitalWrite(LED_LORA, LOW);
+
+  Serial.println("─────────────────────────────────");
+  Serial.println("[LoRa RX] RSSI=" + String(rssi) + " SNR=" + String(snr, 1));
+  Serial.println("[LoRa RX] Raw: " + packet.substring(0, 100));
+
+  // Parse format: TYPE|NODE_ID|{json}
+  int sep1 = packet.indexOf('|');
+  if (sep1 < 0) {
+    Serial.println("[LoRa RX] Format tidak dikenal, skip.");
+    return;
+  }
+
+  int sep2 = packet.indexOf('|', sep1 + 1);
+  if (sep2 < 0) {
+    Serial.println("[LoRa RX] Format tidak lengkap, skip.");
+    return;
+  }
+
+  String type    = packet.substring(0, sep1);
+  String nodeId  = packet.substring(sep1 + 1, sep2);
+  String payload = packet.substring(sep2 + 1);
+
+  Serial.println("[LoRa RX] Type=" + type + " Node=" + nodeId);
+
+  checkWifi(); // Pastikan WiFi masih konek sebelum forward
+
+  if      (type == "PIR")       prosesPIR(nodeId, payload);
+  else if (type == "REED")      prosesREED(nodeId, payload);
+  else if (type == "VIBRATION") prosesVIBRATION(nodeId, payload);
+  else if (type == "HEARTBEAT") prosesHEARTBEAT(nodeId, payload);
+  else {
+    Serial.println("[LoRa RX] Type tidak dikenal: " + type);
+  }
+}
+
+// ============================================
+// SETUP
+// ============================================
+void setup() {
+  Serial.begin(115200);
+  delay(1000);
+
+  pinMode(LED_WIFI, OUTPUT);
+  pinMode(LED_LORA, OUTPUT);
+  digitalWrite(LED_WIFI, LOW);
+  digitalWrite(LED_LORA, LOW);
+
+  Serial.println("=================================");
+  Serial.println("  SMART RACK — GATEWAY RECEIVER");
+  Serial.println("  API: " + String(API_BASE));
+  Serial.println("  Device ID: " + String(DEVICE_ID));
+  Serial.println("=================================");
+
+  // WiFi
+  setupWifi();
+
+  // LoRa — HARUS setting sama persis dengan Node Sender
+  LoRa.setPins(LORA_SS, LORA_RST, LORA_DIO0);
+  if (!LoRa.begin(LORA_FREQ)) {
+    Serial.println("[LoRa] GAGAL INIT! Cek wiring.");
+    while (true) {
+      digitalWrite(LED_LORA, HIGH); delay(200);
+      digitalWrite(LED_LORA, LOW);  delay(200);
+    }
+  }
+
+  LoRa.setSpreadingFactor(9);    // Harus sama dengan Node!
+  LoRa.setSignalBandwidth(125E3);
+  LoRa.setCodingRate4(5);
+
+  Serial.println("[LoRa] ✓ OK — " + String(LORA_FREQ / 1E6) + " MHz, menunggu paket...");
+  Serial.println("Gateway siap!");
+}
+
+// ============================================
+// LOOP
+// ============================================
+void loop() {
+  // Cek apakah ada paket LoRa masuk
+  int packetSize = LoRa.parsePacket();
+
+  if (packetSize > 0) {
+    String packet = "";
+    while (LoRa.available()) {
+      packet += (char)LoRa.read();
+    }
+    int   rssi = LoRa.packetRssi();
+    float snr  = LoRa.packetSnr();
+
+    prosesPacket(packet, rssi, snr);
+  }
+
+  // Print statistik setiap 60 detik
+  if (millis() - lastStatusPrint >= 60000) {
+    Serial.println("─────────────────────────────────");
+    Serial.println("[STATUS] Uptime: " + String(millis()/1000) + "s");
+    Serial.println("[STATUS] LoRa diterima : " + String(totalReceived));
+    Serial.println("[STATUS] API berhasil  : " + String(totalSent));
+    Serial.println("[STATUS] API gagal     : " + String(totalFailed));
+    Serial.println("[STATUS] WiFi: " + String(WiFi.status() == WL_CONNECTED ? "OK" : "PUTUS"));
+    Serial.println("─────────────────────────────────");
+    lastStatusPrint = millis();
+  }
+
+  delay(10); // Kecil saja agar LoRa tidak miss paket
+}
diff --git a/arduino_fixed_code/esp32_node_sender.ino b/arduino_fixed_code/esp32_node_sender.ino
new file mode 100644
index 0000000..83ff713
--- /dev/null
+++ b/arduino_fixed_code/esp32_node_sender.ino
@@ -0,0 +1,304 @@
+/**
+ * ============================================
+ * Smart Rack Security System
+ * ESP32 NODE (SENDER) — Di dalam / dekat rak
+ * 
+ * Sensor  : PIR + Reed Switch Magnetik + SW420
+ * Output  : Buzzer + LED Merah + LED Hijau
+ * Komunikasi : LoRa SX1278 (TX only)
+ * TIDAK butuh WiFi
+ * ============================================
+ */
+
+#include <ArduinoJson.h>
+#include <SPI.h>
+#include <LoRa.h>
+#include <math.h>
+
+// ============================================
+// IDENTITAS NODE
+// ============================================
+#define NODE_ID   "NODE_001"   // ID unik node ini
+
+// ============================================
+// PIN SENSOR
+// ============================================
+#define PIR_PIN      33
+#define REED_PIN     32   // INPUT_PULLUP — LOW = tertutup, HIGH = terbuka
+#define SW420_PIN    34
+
+// ============================================
+// PIN OUTPUT
+// ============================================
+#define BUZZER       25
+#define LED_MERAH    13
+#define LED_HIJAU    4
+
+// ============================================
+// PIN LORA SX1278 RA-02
+// ============================================
+#define LORA_SS      27
+#define LORA_RST     14
+#define LORA_DIO0    26
+#define LORA_FREQ    433E6   // 433 MHz — sesuaikan modul kamu
+
+// ============================================
+// VARIABEL STATE SENSOR
+// ============================================
+int  pirState       = LOW;
+int  reedState      = LOW;
+int  vibrationState = LOW;
+int  lastVibration  = LOW;
+
+bool motionActive   = false;
+bool doorOpen       = false;
+
+unsigned long motionStartTime = 0;
+unsigned long doorOpenTime    = 0;
+unsigned long lastHeartbeat   = 0;
+
+// Heartbeat ke gateway setiap 2 menit
+const unsigned long HEARTBEAT_INTERVAL = 120000;
+
+// ============================================
+// LED
+// ============================================
+void setLED(bool bahaya) {
+  digitalWrite(LED_MERAH, bahaya ? HIGH : LOW);
+  digitalWrite(LED_HIJAU, bahaya ? LOW  : HIGH);
+}
+
+// ============================================
+// BUZZER
+// ============================================
+void buzzerPIR() {
+  digitalWrite(BUZZER, HIGH); delay(300);
+  digitalWrite(BUZZER, LOW);
+}
+
+void buzzerREED() {
+  for (int i = 0; i < 2; i++) {
+    digitalWrite(BUZZER, HIGH); delay(100);
+    digitalWrite(BUZZER, LOW);  delay(100);
+  }
+}
+
+void buzzerGETAR() {
+  for (int i = 0; i < 3; i++) {
+    digitalWrite(BUZZER, HIGH); delay(80);
+    digitalWrite(BUZZER, LOW);  delay(80);
+  }
+}
+
+void buzzerStartup() {
+  for (int i = 0; i < 2; i++) {
+    digitalWrite(BUZZER, HIGH); delay(200);
+    digitalWrite(BUZZER, LOW);  delay(100);
+  }
+}
+
+// ============================================
+// KIRIM PAKET LORA
+// Format: TYPE|NODE_ID|json_payload
+// ============================================
+bool loRaSend(String type, String jsonPayload) {
+  String packet = type + "|" + NODE_ID + "|" + jsonPayload;
+
+  LoRa.beginPacket();
+  LoRa.print(packet);
+  int result = LoRa.endPacket();
+
+  if (result) {
+    Serial.println("[LoRa TX] ✓ " + packet.substring(0, 80));
+  } else {
+    Serial.println("[LoRa TX] ✗ Gagal kirim paket");
+  }
+  return result;
+}
+
+// ============================================
+// KIRIM DATA PIR
+// ============================================
+void kirimPIR(bool detected, int intensity, int duration) {
+  StaticJsonDocument<200> doc;
+  doc["motion_detected"]  = detected;
+  doc["motion_intensity"] = intensity;
+  doc["duration_seconds"] = duration;
+  doc["detection_zone"]   = "center";
+
+  String body;
+  serializeJson(doc, body);
+  Serial.println("[PIR] detected=" + String(detected) + " intensity=" + String(intensity) + " dur=" + String(duration) + "s");
+  loRaSend("PIR", body);
+}
+
+// ============================================
+// KIRIM DATA REED SWITCH
+// ============================================
+void kirimReed(bool opened, int duration) {
+  StaticJsonDocument<200> doc;
+  doc["door_opened"]      = opened;
+  doc["duration_seconds"] = duration;
+  doc["access_method"]    = "manual";
+  doc["door_location"]    = "rack";
+  doc["is_forced_entry"]  = false;
+
+  String body;
+  serializeJson(doc, body);
+  Serial.println("[REED] opened=" + String(opened) + " dur=" + String(duration) + "s");
+  loRaSend("REED", body);
+}
+
+// ============================================
+// KIRIM DATA GETARAN SW420
+// ============================================
+void kirimGetaran(float x, float y, float z) {
+  StaticJsonDocument<200> doc;
+  doc["x_axis"]    = x;
+  doc["y_axis"]    = y;
+  doc["z_axis"]    = z;
+  doc["threshold"] = 2.0;
+
+  String body;
+  serializeJson(doc, body);
+  float mag = sqrt(x*x + y*y + z*z);
+  Serial.println("[SW420] magnitude=" + String(mag, 2));
+  loRaSend("VIBRATION", body);
+}
+
+// ============================================
+// HEARTBEAT — beri tahu gateway node masih hidup
+// ============================================
+void kirimHeartbeat() {
+  StaticJsonDocument<64> doc;
+  doc["uptime_s"] = millis() / 1000;
+
+  String body;
+  serializeJson(doc, body);
+  Serial.println("[HEARTBEAT] uptime=" + String(millis()/1000) + "s");
+  loRaSend("HEARTBEAT", body);
+}
+
+// ============================================
+// SETUP
+// ============================================
+void setup() {
+  Serial.begin(115200);
+  delay(1000);
+
+  // Pin sensor
+  pinMode(PIR_PIN,   INPUT);
+  pinMode(REED_PIN,  INPUT_PULLUP);
+  pinMode(SW420_PIN, INPUT);
+
+  // Pin output
+  pinMode(BUZZER,    OUTPUT);
+  pinMode(LED_MERAH, OUTPUT);
+  pinMode(LED_HIJAU, OUTPUT);
+
+  digitalWrite(BUZZER, LOW);
+  setLED(false); // LED hijau nyala default
+
+  Serial.println("=================================");
+  Serial.println("  SMART RACK — NODE SENDER");
+  Serial.println("  Node ID : " NODE_ID);
+  Serial.println("=================================");
+
+  // Init LoRa
+  LoRa.setPins(LORA_SS, LORA_RST, LORA_DIO0);
+  if (!LoRa.begin(LORA_FREQ)) {
+    Serial.println("[LoRa] GAGAL INIT! Cek wiring.");
+    // Blink LED merah terus sebagai tanda error
+    while (true) {
+      digitalWrite(LED_MERAH, HIGH); delay(200);
+      digitalWrite(LED_MERAH, LOW);  delay(200);
+    }
+  }
+
+  LoRa.setTxPower(17);
+  LoRa.setSpreadingFactor(9);    // SF9 — balance range vs speed
+  LoRa.setSignalBandwidth(125E3);
+  LoRa.setCodingRate4(5);
+
+  Serial.println("[LoRa] OK — " + String(LORA_FREQ / 1E6) + " MHz");
+
+  buzzerStartup();
+  Serial.println("Node siap!");
+}
+
+// ============================================
+// LOOP
+// ============================================
+void loop() {
+  pirState       = digitalRead(PIR_PIN);
+  reedState      = digitalRead(REED_PIN);
+  vibrationState = digitalRead(SW420_PIN);
+
+  // =========================================
+  // PIR — Deteksi Gerakan
+  // =========================================
+  if (pirState == HIGH && !motionActive) {
+    motionActive    = true;
+    motionStartTime = millis();
+    Serial.println(">>> PIR: Gerakan terdeteksi!");
+    buzzerPIR();
+    setLED(true);
+  }
+  else if (pirState == LOW && motionActive) {
+    motionActive = false;
+    int duration = (millis() - motionStartTime) / 1000;
+    int intensity = random(60, 90); // estimasi intensitas
+    kirimPIR(true, intensity, duration);
+    Serial.println(">>> PIR: Selesai, durasi=" + String(duration) + "s");
+  }
+
+  // =========================================
+  // REED SWITCH — Status Rak
+  // =========================================
+  if (reedState == HIGH && !doorOpen) {
+    doorOpen     = true;
+    doorOpenTime = millis();
+    Serial.println(">>> REED: Rak terbuka!");
+    buzzerREED();
+    setLED(true);
+  }
+  else if (reedState == LOW && doorOpen) {
+    doorOpen     = false;
+    int duration = (millis() - doorOpenTime) / 1000;
+    kirimReed(true, duration);
+    Serial.println(">>> REED: Rak tertutup, durasi=" + String(duration) + "s");
+  }
+
+  // =========================================
+  // SW-420 — Deteksi Getaran
+  // =========================================
+  if (vibrationState == HIGH && lastVibration == LOW) {
+    Serial.println(">>> SW420: Getaran terdeteksi!");
+    // Simulasi nilai axis — ganti dengan sensor akselerometer nyata jika ada
+    float x = random(-300, 300) / 100.0;
+    float y = random(-300, 300) / 100.0;
+    float z = random(80, 120)   / 100.0;
+    buzzerGETAR();
+    setLED(true);
+    kirimGetaran(x, y, z);
+  }
+
+  // =========================================
+  // Reset LED jika semua aman
+  // =========================================
+  if (!motionActive && !doorOpen && vibrationState == LOW) {
+    setLED(false);
+  }
+
+  lastVibration = vibrationState;
+
+  // =========================================
+  // HEARTBEAT setiap 2 menit
+  // =========================================
+  if (millis() - lastHeartbeat >= HEARTBEAT_INTERVAL) {
+    kirimHeartbeat();
+    lastHeartbeat = millis();
+  }
+
+  delay(300);
+}
diff --git a/resources/views/home.blade.php b/resources/views/home.blade.php
index e8af643..10a691f 100644
--- a/resources/views/home.blade.php
+++ b/resources/views/home.blade.php
@@ -22,25 +22,44 @@
 <!-- NAVBAR -->
 <nav class="glass fixed top-0 w-full z-50 border-b border-white/10">
 <div class="max-w-7xl mx-auto flex justify-between items-center px-6 py-4">
-<div class="flex items-center gap-3">
-<div class="w-10 h-10 bg-gradient-to-br from-indigo-500 to-purple-600 rounded-xl flex items-center justify-center shadow-lg">
-<i data-feather="shield" class="w-5 h-5 text-white"></i>
-</div>
-<h1 class="text-xl font-display font-bold text-gray-800">Smart Rack Security</h1>
+  <div class="flex items-center gap-3">
+    <div class="w-10 h-10 bg-gradient-to-br from-indigo-500 to-purple-600 rounded-xl flex items-center justify-center shadow-lg">
+      <i data-feather="shield" class="w-5 h-5 text-white"></i>
+    </div>
+    <h1 class="text-xl font-display font-bold text-gray-800">Smart Rack Security</h1>
+  </div>
+
+  <div class="hidden md:flex items-center gap-8">
+    <a href="/home" class="text-gray-700 hover:text-indigo-600 transition-colors font-medium">Home</a>
+    <a href="#fitur" class="text-gray-700 hover:text-indigo-600 transition-colors font-medium">Sensor</a>
+    <a href="#tentang" class="text-gray-700 hover:text-indigo-600 transition-colors font-medium">Tentang</a>
+    <a href="/login" class="bg-gradient-to-r from-indigo-600 to-purple-600 text-white px-6 py-2.5 rounded-xl hover:shadow-lg hover:scale-105 transition-all duration-300 font-medium">
+      Login
+    </a>
+  </div>
+
+  <!-- Hamburger button -->
+  <button id="hamburger-btn" onclick="toggleMobileMenu()" class="md:hidden p-2 rounded-lg hover:bg-white/20 transition-colors focus:outline-none" aria-label="Toggle menu">
+    <i id="hamburger-icon" data-feather="menu" class="w-6 h-6 text-gray-800"></i>
+  </button>
 </div>
 
-<div class="hidden md:flex items-center gap-8">
-<a href="/home" class="text-gray-700 hover:text-indigo-600 transition-colors font-medium">Home</a>
-<a href="#fitur" class="text-gray-700 hover:text-indigo-600 transition-colors font-medium">Sensor</a>
-<a href="#tentang" class="text-gray-700 hover:text-indigo-600 transition-colors font-medium">Tentang</a>
-<a href="/login" class="bg-gradient-to-r from-indigo-600 to-purple-600 text-white px-6 py-2.5 rounded-xl hover:shadow-lg hover:scale-105 transition-all duration-300 font-medium">
-Login
-</a>
-</div>
-
-<button class="md:hidden p-2 rounded-lg hover:bg-white/20 transition-colors">
-<i data-feather="menu" class="w-6 h-6 text-gray-800"></i>
-</button>
+<!-- Mobile Menu -->
+<div id="mobile-menu" class="hidden md:hidden border-t border-white/20 bg-white/95 backdrop-blur-md">
+  <div class="max-w-7xl mx-auto px-6 py-4 flex flex-col gap-1">
+    <a href="/home" class="flex items-center gap-3 px-4 py-3 rounded-xl text-gray-700 hover:bg-indigo-50 hover:text-indigo-600 transition-all font-medium">
+      <i data-feather="home" class="w-5 h-5"></i> Home
+    </a>
+    <a href="#fitur" onclick="closeMobileMenu()" class="flex items-center gap-3 px-4 py-3 rounded-xl text-gray-700 hover:bg-indigo-50 hover:text-indigo-600 transition-all font-medium">
+      <i data-feather="layers" class="w-5 h-5"></i> Sensor
+    </a>
+    <a href="#tentang" onclick="closeMobileMenu()" class="flex items-center gap-3 px-4 py-3 rounded-xl text-gray-700 hover:bg-indigo-50 hover:text-indigo-600 transition-all font-medium">
+      <i data-feather="info" class="w-5 h-5"></i> Tentang
+    </a>
+    <a href="/login" class="flex items-center justify-center gap-3 mt-2 px-4 py-3 rounded-xl bg-gradient-to-r from-indigo-600 to-purple-600 text-white font-semibold hover:shadow-lg transition-all">
+      <i data-feather="log-in" class="w-5 h-5"></i> Login
+    </a>
+  </div>
 </div>
 </nav>
 
@@ -331,5 +350,36 @@
 feather.replace()
 </script>
 
+<script>
+function toggleMobileMenu() {
+  const menu = document.getElementById('mobile-menu');
+  const icon = document.getElementById('hamburger-icon');
+  const isOpen = !menu.classList.contains('hidden');
+
+  if (isOpen) {
+    menu.classList.add('hidden');
+    icon.setAttribute('data-feather', 'menu');
+  } else {
+    menu.classList.remove('hidden');
+    icon.setAttribute('data-feather', 'x');
+  }
+  feather.replace();
+}
+
+function closeMobileMenu() {
+  document.getElementById('mobile-menu').classList.add('hidden');
+  document.getElementById('hamburger-icon').setAttribute('data-feather', 'menu');
+  feather.replace();
+}
+
+// Tutup menu saat klik di luar navbar
+document.addEventListener('click', function (e) {
+  const nav = document.querySelector('nav');
+  if (!nav.contains(e.target)) {
+    closeMobileMenu();
+  }
+});
+</script>
+
 </body>
 </html>
\ No newline at end of file