Gravity: ID809 Capacitive Fingerprint Recognition Sensor

1. Example Code for Arduino-Add Fingerprints

This sample automatically obtains the registrable ID, then collects the fingerprint three times, the yellow light flashes three times successfully. At last, save the fingerprint to the acquired unregistered ID, the green light is on for 1s, and then turns off.

2. Example Code for Arduino-Get Module Information

Get and serial print the module information.

3. Example Code for Arduino-Comprehensive Examples

This example is a comprehensive application of fingerprint module, in which the module will enter into different modes according to the length of finger pressing time. When a finger pressed down, the blue light flashes 3 times to enter the fingerprint comparison mode; the yellow light flashes 3 times to enter the fingerprint registration mode; the red light flashes 3 times to enter the fingerprint deletion mode to delete the fingerprint. This experiment needs to connect IRQ pin to D6.

4. Example Code for Arduino-Fingerprint Deletion

Run the codes, press your finger on the sensor to delete your fingerprint.

5. Example Code for Arduino-Fingerprint Matching

Collect the fingerprint image and compare it with the fingerprints in the fingerprint library. If the comparison succeeds, the green light will be on and the ID number will be printed. If it fails, the red light will be on and the matching failure will be prompted.