Hello,
Having purchased a fingerprint reader (https://fr.aliexpress.com/item/1005001568024522.html)
but i don't have any led
Can you help me?
Schematics:
code:
/***************************************************
This is an example sketch for our optical Fingerprint sensor with LED ring
These displays use TTL Serial to communicate, 2 pins are required to
interface
Adafruit invests time and resources providing this open source code,
please support Adafruit and open-source hardware by purchasing
products from Adafruit!
Written by Limor Fried/Ladyada for Adafruit Industries.
BSD license, all text above must be included in any redistribution
****************************************************/
#include <Adafruit_Fingerprint.h>
#if (defined(__AVR__) || defined(ESP8266)) && !defined(__AVR_ATmega2560__)
// For UNO and others without hardware serial, we must use software serial...
// pin #2 is IN from sensor (GREEN wire)
// pin #3 is OUT from arduino (WHITE wire)
// Set up the serial port to use softwareserial..
SoftwareSerial mySerial(2, 3);
#else
// On Leonardo/M0/etc, others with hardware serial, use hardware serial!
// #0 is green wire, #1 is white
#define mySerial Serial1
#endif
Adafruit_Fingerprint finger = Adafruit_Fingerprint(&mySerial);
void setup()
{
Serial.begin(9600);
while (!Serial); // For Yun/Leo/Micro/Zero/...
delay(100);
Serial.println("\n\nAdafruit finger detect test");
// set the data rate for the sensor serial port
finger.begin(115200);
delay(5);
if (finger.verifyPassword()) {
Serial.println("Found fingerprint sensor!");
} else {
Serial.println("Did not find fingerprint sensor :(");
while (1) { delay(1); }
}
Serial.println(F("Reading sensor parameters"));
finger.getParameters();
Serial.print(F("Status: 0x")); Serial.println(finger.status_reg, HEX);
Serial.print(F("Sys ID: 0x")); Serial.println(finger.system_id, HEX);
Serial.print(F("Capacity: ")); Serial.println(finger.capacity);
Serial.print(F("Security level: ")); Serial.println(finger.security_level);
Serial.print(F("Device address: ")); Serial.println(finger.device_addr, HEX);
Serial.print(F("Packet len: ")); Serial.println(finger.packet_len);
Serial.print(F("Baud rate: ")); Serial.println(finger.baud_rate);
}
void loop() // run over and over again
{
// LED fully on
finger.LEDcontrol(FINGERPRINT_LED_ON, 0, FINGERPRINT_LED_RED);
delay(250);
finger.LEDcontrol(FINGERPRINT_LED_ON, 0, FINGERPRINT_LED_BLUE);
delay(250);
finger.LEDcontrol(FINGERPRINT_LED_ON, 0, FINGERPRINT_LED_PURPLE);
delay(250);
// flash red LED
finger.LEDcontrol(FINGERPRINT_LED_FLASHING, 25, FINGERPRINT_LED_RED, 10);
delay(2000);
// Breathe blue LED till we say to stop
finger.LEDcontrol(FINGERPRINT_LED_BREATHING, 100, FINGERPRINT_LED_BLUE);
delay(3000);
finger.LEDcontrol(FINGERPRINT_LED_GRADUAL_ON, 200, FINGERPRINT_LED_PURPLE);
delay(2000);
finger.LEDcontrol(FINGERPRINT_LED_GRADUAL_OFF, 200, FINGERPRINT_LED_PURPLE);
delay(2000);
}
Datasheets:
https://x2robotics.ca/uart-capacitive-fingerprint-sensor-kit-sfm-v-1-7
