Bonezegei_HCSR04 is a simple and easy-to-use Arduino library for interfacing HCSR04 ultrasonic sensor module. The library provides functions for measuring distance, setting trigger and echo pins. The ...

I purchased one of each of these cheap sensors recently from aliexpress for testing purposes. Compared with the ubiquitous HC-SR04 (*), I liked the idea of having a combined emitter/receiver, i.e.

Abstract: Terrestrial star sensors operating in scenarios such as aircraft, ships, and field experiments are susceptible to atmospheric refraction, especially those encountering large-zenith-distance ...

Abstract: The advancement of microelectromechanical systems (MEMSs) and the Internet of Things (IoT) have enabled a wide range of applications based on smartphones. However, the existing navigation ...

When Presence Sensing is turned on, your PC will keep your data safe by locking the screen when you're not using it. When you walk away from your PC, the operating system will lock the screen to ...