Ultrasonics refers to signals that are above the human hearing span (>20 kHz), and usually in the 40- to 70-kHz range. These signals are used like radar—they’re radiated toward a target and reflected ...

Without any delays, here are the best Phones with Ultrasonic Fingerprint Sensors (March 2026) that make the cut: ...

This project is a simple automatic toll gate system built using Arduino, an ultrasonic sensor, a servo motor, and a 16x2 LCD display. The system detects when a vehicle approaches the gate, opens the ...

Abstract: This paper provides details about the design and operation of a Collision Avoidance System in smart cars, with the Arduino board as the central control unit, interfaced with an ultrasonic ...

Autonomous robot navigation system combining Arduino-based motor control with MATLAB computer vision tracking. The robot follows a predefined path through an environment while being tracked in ...

Abstract: In view of the complex electric field, the internal field of power equipment will have different degrees of distortion, so that the local electric field outburst will be strengthened, and ...