Essential oil diffusers spread fragrance throughout your home without a candle's open flame. Our top picks are powerful and ...

This project implements a proximity-based LED indicator using an ultrasonic sensor. LED brightness varies smoothly with distance, using filtering and PWM to provide stable and responsive visual ...

College of Photonic and Electronic Engineering, Fujian Normal University, Fujian Provincial Key Laboratory of Photonic Technology, Fujian Provincial Engineering Technology Research Center of ...

Abstract: Residual stress dramatically affects the performance of piezoelectric micromachined ultrasonic transducers (pMUTs), in particular, the transmitting sensitivity. This letter presents a novel ...

Proper desk lighting can make or break a Mac setup when it comes to boosting productivity, setting a mood or gaming like you ...

John Carlsen has more than a decade of experience testing and reviewing home tech products, with a major focus on smart home security. He earned his BS in journalism from Utah Valley University. In ...