add Arduino code folder
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#include <WiFi.h>
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#include <Firebase_ESP_Client.h>
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#include <LiquidCrystal_I2C.h>
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#include <HTTPClient.h>
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#include <time.h>
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#include <Adafruit_Fingerprint.h>
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// === WIFI & FIREBASE ===
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#define WIFI_SSID "KOPI"
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#define WIFI_PASSWORD "digoreng123"
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#define API_KEY "AIzaSyD3gpQON7sS6gR1CTf3S0le5WmjJN-KQ8g"
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#define DATABASE_URL "https://beramalbaik-90b62-default-rtdb.firebaseio.com/"
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#define LEGACY_TOKEN "Kz12MOC1xz5UVZih8BU4g3mopL2fNdh3CMyynnc3"
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// === PIN SENSOR ===
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#define S0 14
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#define S1 27
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#define S2 26
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#define S3 25
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#define sensorOut 33
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#define IR_KOIN_1000_1 32
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#define IR_KOIN_1000_2 18
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#define IR_KOIN_500_1 19
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#define IR_KOIN_500_2 23
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#define RELAY_PIN 2
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LiquidCrystal_I2C lcd(0x27, 16, 2);
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FirebaseData fbdo;
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FirebaseAuth auth;
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FirebaseConfig config;
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Adafruit_Fingerprint finger = Adafruit_Fingerprint(&Serial2);
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int totalUang = 0;
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bool tampilSementara = false;
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unsigned long waktuTampil = 0;
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unsigned long waktuRefresh = 0;
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String lastLine1 = "", lastLine2 = "";
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bool bukaKunci = false;
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volatile bool ir1000_1_triggered = false;
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volatile bool ir1000_2_triggered = false;
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volatile bool ir500_1_triggered = false;
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volatile bool ir500_2_triggered = false;
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unsigned long lastKoin1000 = 0;
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unsigned long lastKoin500 = 0;
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unsigned long debounceDelay = 30;
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bool fingerprintGagalBaru = false;
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volatile unsigned long lastInterrupt1000_1 = 0;
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void IRAM_ATTR handleIR1000_1() {
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unsigned long now = millis();
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if (now - lastInterrupt1000_1 > debounceDelay) {
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ir1000_1_triggered = true;
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lastInterrupt1000_1 = now;
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}
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}
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volatile unsigned long lastInterrupt1000_2 = 0;
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void IRAM_ATTR handleIR1000_2() {
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unsigned long now = millis();
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if (now - lastInterrupt1000_2 > debounceDelay) {
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ir1000_2_triggered = true;
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lastInterrupt1000_2 = now;
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}
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}
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volatile unsigned long lastInterrupt500_1 = 0;
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void IRAM_ATTR handleIR500_1() {
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unsigned long now = millis();
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if (now - lastInterrupt500_1 > debounceDelay) {
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ir500_1_triggered = true;
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lastInterrupt500_1 = now;
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}
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}
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volatile unsigned long lastInterrupt500_2 = 0;
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void IRAM_ATTR handleIR500_2() {
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unsigned long now = millis();
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if (now - lastInterrupt500_2 > debounceDelay) {
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ir500_2_triggered = true;
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lastInterrupt500_2 = now;
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}
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}
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void connectWiFi() {
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WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
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Serial.print("Menghubungkan WiFi");
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while (WiFi.status() != WL_CONNECTED) {
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Serial.print(".");
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delay(500);
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}
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Serial.println(" Terhubung!");
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}
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void setupFirebase() {
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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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}
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void setupTCS3200() {
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pinMode(S0, OUTPUT);
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pinMode(S1, OUTPUT);
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pinMode(S2, OUTPUT);
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pinMode(S3, OUTPUT);
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pinMode(sensorOut, INPUT);
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digitalWrite(S0, HIGH);
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digitalWrite(S1, LOW);
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}
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int averageColorFrequency(int s2_val, int s3_val) {
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long total = 0;
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for (int i = 0; i < 3; i++) {
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digitalWrite(S2, s2_val);
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digitalWrite(S3, s3_val);
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delayMicroseconds(300);
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total += pulseIn(sensorOut, LOW);
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}
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return total / 3;
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}
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void tampilkanLCD(String line1, String line2) {
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if (line1 != lastLine1 || line2 != lastLine2) {
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lcd.clear();
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lcd.setCursor(0, 0);
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lcd.print(line1);
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lcd.setCursor(0, 1);
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lcd.print(line2);
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lastLine1 = line1;
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lastLine2 = line2;
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}
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}
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void tampilkanTotalUang() {
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if (Firebase.RTDB.getInt(&fbdo, "/kotak_amal/total_uang")) {
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totalUang = fbdo.intData();
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tampilkanLCD("Total Uang:", "Rp " + String(totalUang));
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}
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}
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void simpanKeHistory(int nominal) {
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if (WiFi.status() == WL_CONNECTED) {
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HTTPClient http;
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http.begin("https://kotakamal-api.vercel.app/api/kirimdata");
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http.addHeader("Content-Type", "application/json");
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String payload = "{\"nominal_uang\":" + String(nominal) + "}";
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int httpResponseCode = http.POST(payload);
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if (httpResponseCode > 0) {
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Serial.println("✅ History saved: " + http.getString());
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} else {
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Serial.println("❌ Gagal kirim history: " + http.errorToString(httpResponseCode));
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}
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http.end();
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} else {
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Serial.println("❌ WiFi belum terhubung");
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}
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}
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String getISOTime() {
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time_t now;
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struct tm timeinfo;
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if (!getLocalTime(&timeinfo)) {
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Serial.println("Gagal mendapatkan waktu");
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return "";
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}
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char isoTime[30];
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strftime(isoTime, sizeof(isoTime), "%Y-%m-%dT%H:%M:%SZ", &timeinfo);
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return String(isoTime);
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}
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void updateFirebase(int jumlah) {
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int currentTotal = 0;
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if (Firebase.RTDB.getInt(&fbdo, "/kotak_amal/total_uang")) {
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currentTotal = fbdo.intData();
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}
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int updatedTotal = currentTotal + jumlah;
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if (Firebase.RTDB.setInt(&fbdo, "/kotak_amal/total_uang", updatedTotal)) {
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Serial.println("Firebase updated: Rp " + String(updatedTotal));
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} else {
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Serial.println("Gagal update Firebase: " + fbdo.errorReason());
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}
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totalUang = updatedTotal;
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simpanKeHistory(jumlah);
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}
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bool cekFingerprint() {
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if (finger.getImage() != FINGERPRINT_OK) return false;
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if (finger.image2Tz() != FINGERPRINT_OK) return false;
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if (finger.fingerSearch() != FINGERPRINT_OK) return false;
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Serial.println("ID fingerprint terdeteksi: " + String(finger.fingerID));
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return true;
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}
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bool daftarFingerprint(int id) {
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Serial.println("Letakkan jari Anda untuk didaftarkan...");
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while (finger.getImage() != FINGERPRINT_OK);
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if (finger.image2Tz(1) != FINGERPRINT_OK) return false;
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Serial.println("Angkat jari, lalu letakkan kembali...");
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tampilkanLCD("Angkat jari", "Letakkan kembali");
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delay(2000);
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while (finger.getImage() != FINGERPRINT_OK);
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if (finger.image2Tz(2) != FINGERPRINT_OK) return false;
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if (finger.createModel() != FINGERPRINT_OK) return false;
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if (finger.storeModel(id) != FINGERPRINT_OK) return false;
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return true;
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}
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void tampilkanSementara(String line1, String line2, int nominal) {
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tampilkanLCD(line1, line2);
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updateFirebase(nominal);
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tampilSementara = true;
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waktuTampil = millis();
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}
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int stringToHashId(String input) {
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unsigned int hash = 0;
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for (int i = 0; i < input.length(); i++) {
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hash = 31 * hash + input.charAt(i);
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}
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return abs((int)(hash % 127) + 1); // pastikan dalam range 1–127
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}
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bool konfirmasiDeteksi(int pin1, int pin2) {
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delay(50); // debounce sensor
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return digitalRead(pin1) == LOW || digitalRead(pin2) == LOW;
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}
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void cekUangKertas() {
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static unsigned long lastDetectedTime = 0;
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static int lastDetectedValue = 0;
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static unsigned long lastCheck = 0;
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if (millis() - lastCheck < 200) return;
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lastCheck = millis();
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int red = averageColorFrequency(LOW, LOW);
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int green = averageColorFrequency(HIGH, HIGH);
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int blue = averageColorFrequency(LOW, HIGH);
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Serial.printf("RGB: R=%d G=%d B=%d\n", red, green, blue);
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int detectedValue = 0;
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if (red >= 28 && red <= 32 && green >= 40 && green <= 46 && blue >= 35 && blue <= 39)
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detectedValue = 100000;
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else if (red >= 30 && red <= 33 && green >= 26 && green <= 30 && blue >= 22 && blue <= 26)
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detectedValue = 50000;
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else if (red >= 42 && red <= 46 && green >= 42 && green <= 46 && blue >= 44 && blue <= 48)
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detectedValue = 20000;
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else if (red >= 39 && red <= 43 && green >= 40 && green <= 44 && blue >= 33 && blue <= 37)
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detectedValue = 10000;
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else if (red >= 22 && red <= 25 && green >= 33 && green <= 37 && blue >= 35 && blue <= 39)
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detectedValue = 5000;
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else if (red >= 36 && red <= 40 && green >= 36 && green <= 40 && blue >= 31 && blue <= 35)
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detectedValue = 2000;
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else if (red >= 25 && red <= 28 && green >= 28 && green <= 32 && blue >= 32 && blue <= 36)
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detectedValue = 1000;
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if (detectedValue > 0 && (millis() - lastDetectedTime > 1500 || detectedValue != lastDetectedValue)) {
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tampilkanSementara("Uang Kertas:", "Rp " + String(detectedValue), detectedValue);
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lastDetectedTime = millis();
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lastDetectedValue = detectedValue;
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}
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}
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void cekKoin1000(unsigned long now) {
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if ((ir1000_1_triggered || ir1000_2_triggered) && (now - lastKoin1000 > debounceDelay)) {
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noInterrupts();
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ir1000_1_triggered = false;
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ir1000_2_triggered = false;
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interrupts();
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lastKoin1000 = now;
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tampilkanSementara("Koin Masuk:", "Rp 1000", 1000);
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Serial.println("✅ Koin Rp 1000 Terdeteksi");
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}
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}
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void cekKoin500(unsigned long now) {
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if ((ir500_1_triggered || ir500_2_triggered) && (now - lastKoin500 > debounceDelay)) {
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noInterrupts();
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ir500_1_triggered = false;
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ir500_2_triggered = false;
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interrupts();
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lastKoin500 = now;
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tampilkanSementara("Koin Masuk:", "Rp 500", 500);
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Serial.println("✅ Koin Rp 500 Terdeteksi");
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}
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}
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void setup() {
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Serial.begin(115200);
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lcd.init();
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lcd.backlight();
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setupTCS3200();
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connectWiFi();
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setupFirebase();
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configTime(7 * 3600, 0, "pool.ntp.org", "time.nist.gov");
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pinMode(IR_KOIN_1000_1, INPUT_PULLUP);
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pinMode(IR_KOIN_1000_2, INPUT_PULLUP);
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pinMode(IR_KOIN_500_1, INPUT_PULLUP);
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pinMode(IR_KOIN_500_2, INPUT_PULLUP);
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attachInterrupt(digitalPinToInterrupt(IR_KOIN_1000_1), handleIR1000_1, FALLING);
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attachInterrupt(digitalPinToInterrupt(IR_KOIN_1000_2), handleIR1000_2, FALLING);
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attachInterrupt(digitalPinToInterrupt(IR_KOIN_500_1), handleIR500_1, FALLING);
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attachInterrupt(digitalPinToInterrupt(IR_KOIN_500_2), handleIR500_2, FALLING);
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pinMode(RELAY_PIN, OUTPUT);
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digitalWrite(RELAY_PIN, HIGH);
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Serial2.begin(57600, SERIAL_8N1, 16, 17);
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finger.begin(57600);
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if (finger.verifyPassword()) {
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Serial.println("Sensor fingerprint terdeteksi.");
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} else {
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Serial.println("Sensor fingerprint TIDAK terdeteksi!");
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tampilkanLCD("Sensor Fingerprint", "TIDAK TERDETEKSI");
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delay(3000); // tampilkan sebentar
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tampilkanTotalUang(); // kembali ke tampilan normal
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}
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tampilkanLCD("Kotak Amal", "Siap Digunakan");
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delay(2000);
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tampilkanTotalUang();
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// Reset trigger flags
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ir1000_1_triggered = false;
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ir1000_2_triggered = false;
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ir500_1_triggered = false;
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ir500_2_triggered = false;
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delay(1000); // Stabilkan sensor setelah boot
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}
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void loop() {
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cekUangKertas();
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unsigned long now = millis();
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cekKoin1000(now);
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cekKoin500(now);
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// === Tampilan Otomatis ===
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if (tampilSementara && millis() - waktuTampil >= 2000) {
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tampilSementara = false;
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tampilkanTotalUang();
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}
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if (!tampilSementara && millis() - waktuRefresh >= 3000) {
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tampilkanTotalUang();
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waktuRefresh = millis();
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}
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// ==== MODE DAFTAR FINGERPRINT (HANYA ID 1) ====
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if (Firebase.RTDB.getBool(&fbdo, "/status_daftar") && fbdo.boolData() == true) {
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Serial.println("🔄 Masuk Mode Daftar Fingerprint");
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finger.deleteModel(1); // Hapus dulu ID 1
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delay(100);
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tampilkanLCD("Tempelkan jari", "untuk daftar");
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delay(1000);
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if (daftarFingerprint(1)) {
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Serial.println("✅ Berhasil daftar sidik jari di ID 1");
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tampilkanLCD("Pendaftaran", "berhasil");
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} else {
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Serial.println("❌ Gagal daftar sidik jari");
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tampilkanLCD("Pendaftaran", "gagal");
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}
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delay(2000);
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tampilkanTotalUang();
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// Reset status daftar
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Firebase.RTDB.setBool(&fbdo, "/status_daftar", false);
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}
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// ==== CEK FINGERPRINT UNTUK AKSES ====
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if (!tampilSementara) {
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if (cekFingerprint()) {
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fingerprintGagalBaru = false;
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Serial.println("Fingerprint cocok, membuka pintu...");
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tampilkanLCD("Fingerprint cocok", "Membuka kunci...");
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digitalWrite(RELAY_PIN, LOW);
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delay(3000);
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digitalWrite(RELAY_PIN, HIGH);
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tampilkanTotalUang();
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} else if (!fingerprintGagalBaru) {
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fingerprintGagalBaru = true;
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tampilkanLCD("Fingerprint", "tidak cocok!");
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delay(2000);
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tampilkanTotalUang();
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}
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}
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// ==== HAPUS SEMUA FINGERPRINT ====
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if (Firebase.RTDB.getBool(&fbdo, "/hapus_fingerprint_data") && fbdo.boolData() == true) {
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tampilkanLCD("Menghapus semua", "sidik jari...");
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Serial.println("Menghapus semua data sidik jari...");
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for (int i = 1; i < 128; i++) {
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if (finger.deleteModel(i) == FINGERPRINT_OK) {
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Serial.print("Hapus ID "); Serial.println(i);
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}
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}
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Firebase.RTDB.setBool(&fbdo, "/hapus_fingerprint_data", false);
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tampilkanLCD("Semua sidik jari", "telah dihapus");
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delay(2000);
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tampilkanTotalUang();
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}
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delay(5);
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}
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