A reflective strip is placed on the motor shaft. Each time the strip passes the IR sensor → pulse generated. Arduino counts pulses for 1 second → converts to RPM.

IoT-based farm security and monitoring system using Arduino, GSM, and IR sensors. This project implements a geofencing system for agriculture that detects intrusions (humans, animals, or unauthorized ...

Abstract: Blade tip clearance (BTC) measurement is crucial for testing and health monitoring of gas turbine engines. Among various measurement methods, the emerging microwave sensing-based solution ...

Abstract: In this report, we propose a quantum sensing architecture for high-voltage (HV) grid current measurement based on an integrated diamond quantum sensor (DQS). The DQS is installed in the HV ...

The best Windows Hello webcams add something your PC may lack: a quick, secure way to log in to your PC without a password. Wouldn’t it be nice if your PC just recognized you instead? That’s where a ...

George Orwell might’ve predicted the surveillance state, but it’s still surprising how many entities took 1984 as a how-to manual instead of a cautionary tale. [Benn Jordan] decided to take a closer ...