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Signed-off-by: habib_andriantito <e41211051@student.polije.ac.id>
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#include <HardwareSerial.h>
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#include <WiFi.h>
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#include <HTTPClient.h>
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// Ganti dengan kredensial WiFi Anda
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const char* ssid = "";
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const char* password = "";
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// URL endpoint
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const char* serverName = "http://..............:../...";
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// Nama perangkat
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const char* deviceName = "....."; // Nama perangkat yang akan dikirim
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HardwareSerial mySerial(1);
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// Variabel untuk mengelola waktu pembacaan sensor
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unsigned long previousMillis = 0;
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const long interval = 10000; // Interval pengukuran dalam milidetik (5 detik)
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const long resetInterval = 20000; // Interval reset dalam milidetik (20 detik)
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const float maxDistance = ...;
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void setup() {
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Serial.begin(115200);
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mySerial.begin(9600, SERIAL_8N1, 16, 17);
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WiFi.begin(ssid, password);
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Serial.print("Connecting to WiFi");
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while (WiFi.status() != WL_CONNECTED) {
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delay(500);
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Serial.print(".");
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}
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Serial.println();
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Serial.println("Connected to WiFi");
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}
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void loop() {
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unsigned long currentMillis = millis();
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// Mengambil nilai millis saat ini
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if (currentMillis - previousMillis >= interval) {
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previousMillis = currentMillis; // Reset waktu sebelumnya
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// Memastikan data tersedia pada serial sensor
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if (mySerial.available() >= 4) { // Pastikan 4 byte tersedia sebelum dibaca
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// Membaca data dari sensor
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uint8_t data[4];
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mySerial.readBytes(data, 4);
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// Debugging: Tampilkan data yang diterima dari sensor
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Serial.print("Data received: ");
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for (int i = 0; i < 4; i++) {
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Serial.print(data[i], HEX);
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Serial.print(" ");
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}
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Serial.println();
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// Memeriksa apakah byte pertama valid (misalnya, 0xFF sebagai start byte)
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if (data[0] == 0xFF) {
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// Menggabungkan byte 1 dan byte 2 untuk mendapatkan jarak dalam milimeter
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uint16_t distance_mm = (data[1] << 8) | data[2];
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// Mengonversi jarak dari mm ke cm
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float distance_cm = distance_mm / 10.0;
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// Batasi jarak maksimal hingga 330 cm
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if (distance_cm > maxDistance) {
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distance_cm = maxDistance;
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}
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// Membalikkan jarak: semakin dekat objek, semakin besar nilainya
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float invertedDistance = maxDistance - distance_cm;
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Serial.print("JARAK: ");
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Serial.println(invertedDistance);
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Serial.println(" cm");
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// Jika terhubung ke WiFi, kirim data jarak ke server
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if (WiFi.status() == WL_CONNECTED) {
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HTTPClient http;
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// Membuat URL dengan parameter jarak terbalik dan nama perangkat
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String url = String(serverName) + "?device=" + String(deviceName) + "&distance=" + String(invertedDistance, 3);
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http.begin(url);
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// Melakukan HTTP GET request
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int httpResponseCode = http.GET();
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// Mengecek apakah request berhasil
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if (httpResponseCode > 0) {
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String response = http.getString();
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Serial.println("Response code: " + String(httpResponseCode));
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Serial.println("Response: " + response);
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} else {
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Serial.println("Error in HTTP request: " + String(httpResponseCode));
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}
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http.end(); // Menutup koneksi
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} else {
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Serial.println("Error in WiFi connection");
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}
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} else {
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Serial.println("Invalid start byte received.");
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}
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} else {
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Serial.println("Not enough data available to read.");
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}
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}
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// Periksa apakah waktu reset telah berlalu
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if (currentMillis % resetInterval == 0) {
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Serial.println("Restarting");
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delay(10000); // Tunggu 10 detik
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ESP.restart(); // Mereset ESP32
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}
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}
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#include <WiFi.h>
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#include <HTTPClient.h>
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const int trigPin = 5; // Pin Trig
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const int echoPin = 18; // Pin Echo
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const char* ssid = "";
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const char* password = "";
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const char* serverName = "http://...............:.../...";
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const char* deviceName = "....."; // Nama perangkat
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// Waktu untuk restart (1 jam dalam milidetik)
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const unsigned long restartInterval = 3600000; // 1 jam = 3600000 ms
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unsigned long previousMillisRestart = 0; // Waktu sebelumnya untuk restart
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const long maxDistance = 125; // Jarak maksimal dalam cm
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void setup() {
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// Inisialisasi Serial Monitor
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Serial.begin(115200);
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// Mengatur pin Trig sebagai output
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pinMode(trigPin, OUTPUT);
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// Mengatur pin Echo sebagai input
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pinMode(echoPin, INPUT);
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// Menghubungkan ke WiFi
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WiFi.begin(ssid, password);
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Serial.print("Connecting to WiFi");
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while (WiFi.status() != WL_CONNECTED) {
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delay(500);
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Serial.print(".");
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}
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Serial.println();
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Serial.println("Connected to WiFi");
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}
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void loop() {
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unsigned long currentMillis = millis();
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// Mengirimkan pulse 10us ke pin Trig
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digitalWrite(trigPin, LOW);
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delayMicroseconds(2);
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digitalWrite(trigPin, HIGH);
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delayMicroseconds(10);
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digitalWrite(trigPin, LOW);
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// Membaca durasi pulse pada pin Echo
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long duration = pulseIn(echoPin, HIGH);
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// Menampilkan durasi pulse untuk debugging
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Serial.print("Duration: ");
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Serial.print(duration);
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Serial.println(" microseconds");
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// Menghitung jarak dalam cm
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if (duration > 0) {
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long distance = (duration / 2) / 29.1;
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// Batasi jarak maksimal hingga 250 cm
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if (distance > maxDistance) {
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distance = maxDistance;
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}
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// Membalikkan jarak: semakin dekat objek, semakin besar nilainya
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long mappedDistance = map(distance, 0, maxDistance, maxDistance, 0);
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Serial.print("Mapped Distance: ");
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Serial.print(mappedDistance);
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Serial.println(" cm");
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// Jika terhubung ke WiFi, kirim data jarak ke server
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if (WiFi.status() == WL_CONNECTED) {
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HTTPClient http;
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// Membuat URL dengan parameter jarak yang sudah dipetakan dan nama perangkat
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String url = String(serverName) + "?device=" + String(deviceName) + "&distance=" + String(mappedDistance);
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http.begin(url);
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// Melakukan HTTP GET request
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int httpResponseCode = http.GET();
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// Mengecek apakah request berhasil
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if (httpResponseCode > 0) {
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String response = http.getString();
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Serial.println("Response code: " + String(httpResponseCode));
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Serial.println("Response: " + response);
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} else {
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Serial.println("Error in HTTP request: " + String(httpResponseCode));
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}
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http.end(); // Menutup koneksi
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} else {
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Serial.println("Error in WiFi connection");
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}
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} else {
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Serial.println("No pulse detected.");
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}
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// Cek apakah waktu 1 jam sudah berlalu untuk restart
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if (currentMillis - previousMillisRestart >= restartInterval) {
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Serial.println("Restarting system after 1 hour...");
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delay(1000); // Tunggu 1 detik sebelum restart
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ESP.restart(); // Restart ESP32
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}
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delay(1000);
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}
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#include <WiFi.h>
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#include <HTTPClient.h>
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// Ganti dengan kredensial WiFi Anda
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const char* ssid = "...";
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const char* password = ".....";
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// URL endpoint
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const char* serverName = "http://...............:.../...";
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const char* deviceName = "";
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const float OffSet = 0.50;
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float V, P; // Tegangan dan Tekanan
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unsigned long previousMillis = 0; // Variabel untuk melacak waktu
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const long resetInterval = 600000; // 10 menit
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// Koefisien untuk filter low-pass
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float alpha = 0.1; // Konstanta filter (0.0 - 1.0), sesuaikan dengan kebutuhan
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float filteredVoltage = 0; // Tegangan yang sudah difilter
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void setup() {
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Serial.begin(9600);
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Serial.println("/** Water Pressure Sensor Data **/");
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// Menghubungkan ke WiFi
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WiFi.begin(ssid, password);
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while (WiFi.status() != WL_CONNECTED) {
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delay(500);
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Serial.print(".");
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}
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Serial.println("Connected to WiFi");
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}
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void loop() {
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unsigned long currentMillis = millis();
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if (currentMillis - previousMillis >= resetInterval) {
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Serial.println("Resetting device...");
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ESP.restart(); // Reset ESP32 setelah 10 menit
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}
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int sensorValue = analogRead(34);
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V = sensorValue * 3.3 / 4095; // Mengonversi nilai ADC ke tegangan (3.3V, 12-bit)
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// Filter low-pass untuk menstabilkan pembacaan tegangan
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filteredVoltage = (alpha * V) + ((1 - alpha) * filteredVoltage);
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// Menghitung tekanan berdasarkan tegangan yang sudah difilter
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P = (filteredVoltage - OffSet) * 400; // Mengonversi tegangan ke tekanan (KPa)
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float P_bar = P / 100.0; // Konversi tekanan ke bar
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// Menampilkan hasil di Serial Monitor
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Serial.print("Filtered Voltage: ");
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Serial.print(filteredVoltage, 3);
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Serial.println(" V");
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Serial.print("Pressure: ");
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Serial.print(P_bar, 3);
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Serial.println(" bar");
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Serial.println();
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// Mengirim data ke server menggunakan GET
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if (WiFi.status() == WL_CONNECTED) {
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HTTPClient http;
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String url = String(serverName) + "?device=" + String(deviceName) + "&voltage=" + String(filteredVoltage, 3) + "&pressure=" + String(P_bar, 3);
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http.begin(url);
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int httpResponseCode = http.GET();
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if (httpResponseCode > 0) {
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String response = http.getString();
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Serial.println("Response code: " + String(httpResponseCode));
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Serial.println("Response: " + response);
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} else {
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Serial.println("Error in HTTP request: " + String(httpResponseCode));
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}
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http.end(); // Menutup koneksi
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} else {
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Serial.println("Error in WiFi connection");
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}
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delay(2000); // Tunggu 2 detik sebelum pengiriman berikutnya
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}
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@ -0,0 +1,37 @@
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<?php
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$Servername = ",,,.,,,.,,,.,,,:,,,,";
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$username = "....";
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$password = ".....";
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$dbname = ".......";
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$conn = new mysqli($Servername, $username, $password,
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$dbname);
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// Check connection
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if ($conn->connect_error) {
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die("Connection failed: " . $conn->connect_error);
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}
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// Retrieve data from GET request and allow null values
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$voltage = isset($_GET['voltage']) ? $_GET['voltage'] :
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null;
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$pressure = isset($_GET['pressure']) ? $_GET['pressure']
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: null;
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$device = isset($_GET['device']) ? $_GET['device']:null;
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$distance = isset($_GET['distance']) ? $_GET['distance']
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: null;
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$now = date('Y-m-d H:i:s'); // Get current timestamp
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// Convert null values to 'NULL' for SQL insertion
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$voltage = $voltage !== null ? "'$voltage'" : "NULL";
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$pressure = $pressure !== null ? "'$pressure'" : "NULL";
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$device = $device !== null ? "'$device'" : "NULL";
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$distance = $distance !== null ? "'$distance'" : "NULL";
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// Insert data into the database, allowing null values
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$sql = "INSERT INTO sensor_data (voltage, pressure,
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device_name, distance, created_at, updated_at)
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VALUES ($voltage, $pressure, $device, $distance, '$now',
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'$now')";
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if ($conn->query($sql) === TRUE) {
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echo "New record created successfully";
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} else {
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echo "Error: " . $sql . "<br>" . $conn->error;}
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$conn->close();
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?>
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