Grove Fingerprint Sensor

Products & Technology Arduino & Seeeduino
#1

Hello
i´ve bought the Fingerprint Sensor and tried to start it.
In the beginning, the Sensor blinks one time.
Than I want to start the enroll.ino, but I get the Output, that there is no Sensor found.

Following there is a little cutout from the enroll.ino - Example:

#include <Adafruit_Fingerprint.h>
#include <SoftwareSerial.h>

uint8_t getFingerprintEnroll(uint8_t id);


// pin #2 is IN from sensor (GREEN wire)
// pin #3 is OUT from arduino  (WHITE wire)
SoftwareSerial mySerial(2, 3);

Adafruit_Fingerprint finger = Adafruit_Fingerprint(&mySerial);

void setup()  
{
  Serial.begin(9600);
  Serial.println("fingertest");

  // set the data rate for the sensor serial port
  finger.begin(57600);
  
  if (finger.verifyPassword()) {
    Serial.println("Found fingerprint sensor!");
  } else {
    Serial.println("Did not find fingerprint sensor :(");
    while (1);
  }
}
#2

Hi @Flo1
It seems your hardware connection problem, please send a picture of your hardware connection.

#3

image
image1600×1200 310 KB

I hope you can see it :slight_smile:
At the bottom there is the Arduino mega
In the middle is a W5500 Ethernet Shield
And at the top there is the Base Shield.

Is it right, that the output from the Arduino is just 40 miliamperes and the Fingerprintsensor needs 120 miliamperes?

And is it correct, that the Fingerprintsensor just blink red one time, when I connect the Arduino with my Laptop, but then not anymore. Not even when I want to enroll my finger into the Sensor?

#4

@jiachenglu
I forgot to connect your name :wink: