Google is upgrading the ultrasonic fingerprint biometric sensor for its latest flagship smartphone release. In 2024 the Google Pixel 9 featured an ultrasonic fingerprint sensor for the first time, ...

Below, you can see the circuit diagram used in this project. The system is powered using a 7.2V 18650 battery, which is connected to the Arduino's power input (Vin). The Arduino then supplies 5V to ...