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How Do I Fix Imaging and Packet Errors When Enrolling Fingerprints on Sensor?

Based on my previous question, How do I enroll fingerprints into the sensor and store them for future comparison? cause am getting an imaging error and error receiving packets when running my code

uint8_t enrollFingerprint(uint8_t id) {
  int p = -1;
  Serial.print("Waiting for finger to enroll...");
  while (p != FINGERPRINT_OK) {
    p = finger.getImage();
    switch (p) {
      case FINGERPRINT_OK:
        Serial.println("Image taken");
        break;
      case FINGERPRINT_NOFINGER:
        Serial.print(".");
        break;
      case FINGERPRINT_PACKETRECIEVEERR:
        Serial.println("Error receiving packet");
        break;
      case FINGERPRINT_IMAGEFAIL:
        Serial.println("Imaging error");
        return p;
      default:
        Serial.println("Unknown error");
        return p;
    }
  }

  // Convert and store the image template
  p = finger.image2Tz(1);
  if (p != FINGERPRINT_OK) return p;
  
  p = finger.storeModel(id);
  if (p == FINGERPRINT_OK)
    Serial.println("Fingerprint enrolled!");
  else
    Serial.println("Failed to store fingerprint.");

  return p;
}

void setup() {
  Serial.begin(115200);
  mySerial.begin(57600, SERIAL_8N1, 16, 17);
  finger.begin(57600);
  
  if (finger.verifyPassword()) {
    Serial.println("Sensor initialized.");
    enrollFingerprint(1);  // Enroll the first fingerprint
  }
}
  1. Enthernet Code#0000

    @bosslady0299 To successfully enroll fingerprints into your sensor and resolve the issues you’re encountering, focus on
    – Initialization, Ensure the fingerprint sensor is correctly initialized, including verifying connections and matching the baud rate between the sensor and the microcontroller.

    – Imaging Issues, Make sure the finger is placed properly on the sensor and check that the sensor is clean and functional to avoid the `FINGERPRINT_IMAGEFAIL error`.

    – Packet Receiving Errors, These can be caused by loose wiring or `baud rate` mismatches. Ensure proper wiring connections and consider lowering the `baud rate`.

  2. Enthernet Code#0000

    your code should look like this
    “`cpp
    uint8_t enrollFingerprint(uint8_t id) {
    int p = -1;
    Serial.print(“Waiting for finger to enroll…”);

    // Retry logic for capturing image
    for (int attempt = 0; attempt < 3; attempt++) { p = finger.getImage(); switch (p) { case FINGERPRINT_OK: Serial.println("Image taken"); break; case FINGERPRINT_NOFINGER: Serial.print("."); break; case FINGERPRINT_PACKETRECIEVEERR: Serial.println("Error receiving packet, retrying..."); continue; // Retry on packet error case FINGERPRINT_IMAGEFAIL: Serial.println("Imaging error, try again."); return p; // Exit on image failure default: Serial.println("Unknown error"); return p; } if (p == FINGERPRINT_OK) break; // Exit retry loop if image is successfully taken } // Convert and store the image template p = finger.image2Tz(1); if (p != FINGERPRINT_OK) return p; p = finger.storeModel(id); if (p == FINGERPRINT_OK) Serial.println("Fingerprint enrolled!"); else Serial.println("Failed to store fingerprint."); return p; } void setup() { Serial.begin(115200); mySerial.begin(57600, SERIAL_8N1, 16, 17); // Ensure TX/RX pins are correct finger.begin(57600); if (finger.verifyPassword()) { Serial.println("Sensor initialized."); enrollFingerprint(1); // Enroll the first fingerprint } else { Serial.println("Failed to initialize sensor."); } } ```

  3. Boss lady#0000

    Thanks @enthernetcode

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