commit 07b1637aeeb1a33135493dfc963a3fe00a1fbd80
Author: akhmadmartaadiputra <akhmadmarta07@gmail.com>
Date:   Wed Aug 13 19:45:16 2025 +0700

    Upload files to "/"

diff --git a/FINISH.ino b/FINISH.ino
new file mode 100644
index 0000000..066e58b
--- /dev/null
+++ b/FINISH.ino
@@ -0,0 +1,146 @@
+#include <WiFiManager.h>
+#include <WiFi.h>
+#include <FirebaseESP32.h>
+#include <Wire.h>
+#include <LiquidCrystal_I2C.h>
+
+// Firebase config
+#define FIREBASE_HOST "https://tdsmeter-8042a-default-rtdb.firebaseio.com/"
+#define FIREBASE_AUTH "GnAvtjMBxgEqsEdPDiuCwBmo6dRxBKcr1JIEqEqz"
+
+// Pin
+#define TDS_PIN 34
+#define BUZZER_PIN 26
+
+// Ambang batas TDS (ppm)
+#define TDS_THRESHOLD 500
+
+// Kalibrasi TDS (atur berdasarkan hasil perbandingan)
+const float VREF = 3.3;
+const int ADC_RESOLUTION = 4095;
+float TDS_factor = 0.399;  // Ganti sesuai kalibrasi
+
+// LCD I2C
+LiquidCrystal_I2C lcd(0x27, 16, 2);
+
+// Firebase
+FirebaseData firebaseData;
+FirebaseConfig firebaseConfig;
+FirebaseAuth firebaseAuth;
+
+// Variabel global
+float tdsValue = 0;
+float voltage = 0;
+String status = "";
+
+// Fungsi scroll teks LCD
+void scrollText(String text, int row, int delayTime) {
+  int len = text.length();
+  if (len <= 16) {
+    lcd.setCursor(0, row);
+    lcd.print(text);
+    lcd.print("                ");
+    delay(delayTime);
+    return;
+  }
+  for (int i = 0; i <= len - 16; i++) {
+    lcd.setCursor(0, row);
+    lcd.print(text.substring(i, i + 16));
+    delay(delayTime);
+  }
+  delay(500);
+}
+
+void setup() {
+  Serial.begin(115200);
+
+  // LCD setup
+  lcd.init();
+  lcd.backlight();
+  lcd.setCursor(0, 0);
+  lcd.print("TDS Monitor");
+  delay(2000);
+  lcd.clear();
+
+  // Buzzer setup
+  pinMode(BUZZER_PIN, OUTPUT);
+  digitalWrite(BUZZER_PIN, HIGH);  // Awalnya mati
+
+  // WiFi Manager
+  WiFiManager wm;
+  if (!wm.autoConnect("ESP32_Config_AP")) {
+    Serial.println("Gagal konek WiFi");
+    delay(3000);
+    ESP.restart();
+  }
+
+  Serial.println("WiFi Terhubung:");
+  Serial.println(WiFi.localIP());
+
+  // Firebase
+  firebaseConfig.signer.tokens.legacy_token = FIREBASE_AUTH;
+  firebaseConfig.database_url = FIREBASE_HOST;
+  Firebase.begin(&firebaseConfig, &firebaseAuth);
+  Firebase.reconnectWiFi(true);
+}
+
+void loop() {
+  // Ambil 10 sampel ADC
+  int total = 0;
+  for (int i = 0; i < 10; i++) {
+    total += analogRead(TDS_PIN);
+    delay(10);
+  }
+  int analogValue = total / 10;
+
+  // Konversi ke tegangan
+  voltage = analogValue * (VREF / ADC_RESOLUTION);
+
+  // Hitung TDS (pakai rumus polinomial + faktor kalibrasi)
+  tdsValue = (133.42 * voltage * voltage * voltage - 255.86 * voltage * voltage + 857.39 * voltage) * TDS_factor;
+  if (tdsValue < 0) tdsValue = 0;
+
+  // Debug Serial
+  Serial.print("ADC: ");
+  Serial.print(analogValue);
+  Serial.print(" | V: ");
+  Serial.print(voltage, 4);
+  Serial.print(" V | TDS: ");
+  Serial.print(tdsValue, 2);
+  Serial.println(" ppm");
+
+  // LCD tampilan baris 1
+  lcd.setCursor(0, 0);
+  lcd.print("TDS: ");
+  lcd.print(tdsValue, 1);
+  lcd.print(" ppm     ");
+
+  // Penilaian status air
+  if (tdsValue <= 50) {
+    status = "Status: Sangat Baik";
+    digitalWrite(BUZZER_PIN, HIGH);  // Buzzer mati
+  } else if (tdsValue <= 150) {
+    status = "Status: Baik";
+    digitalWrite(BUZZER_PIN, HIGH);
+  } else if (tdsValue <= TDS_THRESHOLD) {
+    status = "Status: Cukup Baik";
+    digitalWrite(BUZZER_PIN, HIGH);
+  } else {
+    status = "Status: Buruk";
+    digitalWrite(BUZZER_PIN, LOW);  // Buzzer menyala
+  }
+
+  // Scroll teks status di baris 2
+  scrollText(status, 1, 250);
+
+  // Kirim data ke Firebase
+  if (Firebase.setFloat(firebaseData, "/TDS/value", tdsValue) &&
+      Firebase.setString(firebaseData, "/TDS/status", status)) {
+    Serial.println("Data terkirim ke Firebase");
+  } else {
+    Serial.print("Gagal kirim: ");
+    Serial.println(firebaseData.errorReason());
+  }
+
+  delay(1000);
+}