This project uses an HC-SR04 ultrasonic sensor to measure how close an object is. A buzzer and LED react depending on the distance, similar to a car parking sensor. < 10 cm → buzzer and LED stay on.

Abstract: The Smart Automated Zebra Crossing System operationalizes Passive Infrared (PIR) sensors and Internet of Things (IoT) technology with IP camera-based headcount capabilities to foster ...

Unexpeced approaching behind when riding frightened me sometimes, although ready made products are in the market, I made bicycle radar demo. Limitations LD2410 covers ...

Abstract: Office buildings are key energy consumers and thus require attention to achieve efficient operation. While individual office spaces are dynamically used, current building automation does not ...

Providing utility professionals with critical information related to the planning, design, construction, operations, maintenance and safety of transmission and distribution facilities, including ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› by Rachel Cericola A smart doorbell camera allows you to see who’s on the other ...

A piece of luggage prompted a major security alert at Dublin Airport yesterday afternoon. Terminal 2 was evacuated for two hours after a bag was identified as suspicious, but it was a false alarm. The ...

Thanks to smart home security systems, it's easier and more affordable than ever to monitor your home from pretty much anywhere. At PCMag, we have been reviewing smart home security solutions for ...

Top lawmakers, influential Indian American business leaders, and former U.S. diplomats on Wednesday (September 10, 2025) warned that President Donald Trump’s trade war with India and his ...