This is an Arduino-based Proximity Sensor circuit wired using the popular HC-SR04 Ultrasonic ranging module,used here for non-contact object detection purpose. The HC-SR04 module includes ultrasonic ...

Qualcomm’s second-generation ultrasonic fingerprint reader — the 3D Sonic Max —is 17 times larger than the original, in an attempt to solve the first-gen model’s issues.

This paper proposes an induction device design for result measurement based on the seated forward bend. Starting from this sport, a bracelet-type device is simulated and designed to be worn on the ...

A compact fiber-optic ultrasonic sensor based on the anti-resonant reflecting optical waveguide (ARROW) in hollow core fiber is proposed and demonstrated experimentally. The proposed sensor consists ...