kode arduino
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#include <WiFi.h>
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#include <Firebase_ESP_Client.h>
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#include <Wire.h>
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#include <LiquidCrystal_I2C.h>
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#include <WebServer.h>
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#include <WiFiManager.h> // Tambahkan WiFiManager
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#define API_KEY "AIzaSyBfSo7wVseHLUJepuOv4f0nUKSMpkdaG4c"
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#define DATABASE_URL "https://femonitor-87369-default-rtdb.asia-southeast1.firebasedatabase.app/"
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#define LEGACY_TOKEN "wOznU9rBFBFG5UauVrkfaVOKrc8SCBMW7pmgV7ZT"
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#define LDR_SEBELUM 34
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#define LDR_SESUDAH 32
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#define RELAY_PIN 14
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#define LED1_PIN 12
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FirebaseData fbdo;
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FirebaseAuth auth;
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FirebaseConfig config;
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LiquidCrystal_I2C lcd(0x27, 16, 2);
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WebServer server(80);
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unsigned long lastUpdate = 0;
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unsigned long interval = 5000;
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float faktorKalibrasiSebelum = 1.0;
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float offsetKalibrasiSebelum = 0.0;
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float faktorKalibrasiSesudah = 1.0;
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float offsetKalibrasiSesudah = 0.0;
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#define LDR_SMOOTH_COUNT 10
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int ldrBufferSebelum[LDR_SMOOTH_COUNT] = {0};
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int ldrBufferSesudah[LDR_SMOOTH_COUNT] = {0};
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int bufferIndex = 0;
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float lastFeSebelum = 0.0;
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float lastFeSesudah = 0.0;
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float deltaFeThreshold = 0.2;
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int ldrSebelum = 0;
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int ldrSesudah = 0;
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float feSebelum = 0.0;
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float feSesudah = 0.0;
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void handleRoot() {
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String html = "<!DOCTYPE html><html><head><meta charset='UTF-8'><title>Data Sensor</title></head><body>";
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html += "<h2>Data Sensor</h2>";
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html += "<p><b>LDR Sebelum:</b> " + String(ldrSebelum) + "</p>";
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html += "<p><b>LDR Sesudah:</b> " + String(ldrSesudah) + "</p>";
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html += "<p><b>Fe Sebelum (ppm):</b> " + String(feSebelum, 2) + "</p>";
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html += "<p><b>Fe Sesudah (ppm):</b> " + String(feSesudah, 2) + "</p>";
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html += "<h3>Kalibrasi Sebelum:</h3>";
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html += "<p>Faktor: " + String(faktorKalibrasiSebelum, 6) + "</p>";
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html += "<p>Offset: " + String(offsetKalibrasiSebelum, 6) + "</p>";
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html += "<h3>Kalibrasi Sesudah:</h3>";
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html += "<p>Faktor: " + String(faktorKalibrasiSesudah, 6) + "</p>";
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html += "<p>Offset: " + String(offsetKalibrasiSesudah, 6) + "</p>";
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html += "</body></html>";
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server.send(200, "text/html", html);
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}
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void updateKalibrasi() {
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if (Firebase.RTDB.getFloat(&fbdo, "/kalibrasi/sebelum/faktor")) {
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faktorKalibrasiSebelum = fbdo.floatData();
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}
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if (Firebase.RTDB.getFloat(&fbdo, "/kalibrasi/sebelum/offset")) {
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offsetKalibrasiSebelum = fbdo.floatData();
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}
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if (Firebase.RTDB.getFloat(&fbdo, "/kalibrasi/sesudah/faktor")) {
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faktorKalibrasiSesudah = fbdo.floatData();
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}
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if (Firebase.RTDB.getFloat(&fbdo, "/kalibrasi/sesudah/offset")) {
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offsetKalibrasiSesudah = fbdo.floatData();
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}
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}
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int smoothLDR(int pin, int* buffer) {
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buffer[bufferIndex] = analogRead(pin);
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long total = 0;
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for (int i = 0; i < LDR_SMOOTH_COUNT; i++) {
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total += buffer[i];
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}
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return total / LDR_SMOOTH_COUNT;
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}
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void sendDataToFirebase() {
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Firebase.RTDB.setFloat(&fbdo, "/kadar_fe/sebelum", feSebelum);
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Firebase.RTDB.setFloat(&fbdo, "/kadar_fe/sesudah", feSesudah);
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}
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void setup() {
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Serial.begin(115200);
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Wire.begin(21, 22);
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lcd.init();
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lcd.backlight();
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pinMode(RELAY_PIN, OUTPUT);
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digitalWrite(RELAY_PIN, LOW);
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pinMode(LED1_PIN, OUTPUT);
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digitalWrite(LED1_PIN, HIGH);
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lcd.setCursor(0, 0);
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lcd.print("WiFiManager...");
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WiFiManager wm;
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bool res = wm.autoConnect("FeMonitorAP"); // Tanpa password
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if (!res) {
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Serial.println("Gagal connect WiFi. Restart...");
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lcd.setCursor(0, 1);
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lcd.print("WiFi Failed");
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delay(3000);
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ESP.restart();
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}
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Serial.println("WiFi Connected!");
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Serial.print("IP: ");
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Serial.println(WiFi.localIP());
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lcd.clear();
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lcd.setCursor(0, 0);
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lcd.print("WiFi Connected!");
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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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updateKalibrasi();
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delay(2000);
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lcd.clear();
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server.on("/", handleRoot);
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server.begin();
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Serial.println("WebServer ready at: " + WiFi.localIP().toString());
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}
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void loop() {
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if (millis() - lastUpdate >= interval && Firebase.ready()) {
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lastUpdate = millis();
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updateKalibrasi();
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ldrSebelum = smoothLDR(LDR_SEBELUM, ldrBufferSebelum);
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ldrSesudah = smoothLDR(LDR_SESUDAH, ldrBufferSesudah);
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bufferIndex = (bufferIndex + 1) % LDR_SMOOTH_COUNT;
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feSebelum = (ldrSebelum * faktorKalibrasiSebelum) + offsetKalibrasiSebelum;
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feSesudah = (ldrSesudah * faktorKalibrasiSesudah) + offsetKalibrasiSesudah;
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feSebelum = constrain(feSebelum, 0.0, 10.0);
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feSesudah = constrain(feSesudah, 0.0, 10.0);
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Serial.println("===== SENSOR =====");
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Serial.print("LDR Sebelum: "); Serial.println(ldrSebelum);
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Serial.print("LDR Sesudah: "); Serial.println(ldrSesudah);
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Serial.print("Fe Sebelum: "); Serial.println(feSebelum, 2);
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Serial.print("Fe Sesudah: "); Serial.println(feSesudah, 2);
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Serial.println("==================");
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lcd.clear();
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lcd.setCursor(0, 0);
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lcd.print("Fe Seb: ");
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lcd.print(feSebelum, 2);
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lcd.setCursor(0, 1);
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lcd.print("Fe Ses: ");
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lcd.print(feSesudah, 2);
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sendDataToFirebase();
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if (Firebase.RTDB.getBool(&fbdo, "/relay/pompa")) {
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if (fbdo.dataType() == "boolean") {
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bool statusRelay = fbdo.boolData();
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digitalWrite(RELAY_PIN, statusRelay ? HIGH : LOW);
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Serial.print("Relay: ");
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Serial.println(statusRelay ? "ON" : "OFF");
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}
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}
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}
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server.handleClient();
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}
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