The Smart SMS Alert System using Seeed Studio Xiao ESP32 is one of the compact IoT projects that uses an HC-SR04 ultrasonic sensor to detect nearby movement. The system acts like a motion detector ...
Without any delays, here are the best Phones with Ultrasonic Fingerprint Sensors (January 2026) that make the cut: ...
XDA Developers on MSN
I built a ghost-proof ESP32-powered presence sensor and here's how it works
Bermuda enables device proximity in a room without using any trackers or apps. Using an ESP32, it works as a Bluetooth proxy, ...
This project demonstrates a low-cost intelligent traffic signal system using Arduino and ultrasonic sensors to reduce congestion caused by fixed-timer traffic lights. Four HC-SR04 sensors detect ...
In the Gobi Desert outside Golmud in the northwestern province of Qinghai, a row of white tanks stands tall in the open wilderness. Inside, air is compressed and cooled to -194 degrees Celsius (-317 ...
The HC-SR04 ultrasonic sensor is an affordable and super-popular sensor that measures the distance between itself and an object located in front of the sensor. Very simple to use, it returns the ...
Troy Segal is an editor and writer. She has 20+ years of experience covering personal finance, wealth management, and business news. VioletaStoimenova / Getty Images Disclosure is the release of ...
A special vacation bench of the Allahabad High Court on Wednesday refused to entertain a petition related to the land measurement of a cemetery in Sambhal. The court directed the petitioners to ...
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