This Ultrasonic Sensor Circuit consists of a set of ultrasonic receiver and transmitter which operate at the same frequency. When something moves in the area covered the circuit’s fine balance is ...

[Klaus] wanted some sort of aid for parking his car, and after running across a $4 ultrasonic sensor, decided to build his own speaking distance sensor (.de, Google Translation). Inside [Klaus]’ ...

Qualcomm has announced a second-generation version of its ultrasonic in-display fingerprint sensor, the 3D Sonic Max, that promises to fix the issues with the original 3D Sonic Sensor by offering a ...