There are plenty of radios you can buy that pick up MW and SW bands if that’s what you’re into. Or, you can follow [mircemk]’s example, and whip one up yourself instead. The build employs an ESP32 as ...

Siyuan Wang, Ke Li, Jingyuan Huang, Jike Wang, Cheng Zhang, Alanson Sample, Dongyao Chen. Proceedings of IEEE PerCom 2026 (to appear). μTouch is a compact magnetic-sensing platform for recognizing ...

DI Fuel System Sensor Configuration: Rail Sensor Input, LPFP/HPFP Setup, and Pressure Monitoring — A user configuring a direct injection (DI) fuel system asked about locating the fuel rail sensor ...

Thermal printing is a non-impact printing method that uses heat to produce images or text on specially coated heat-sensitive paper, known as thermal paper. It prints by passing the thermal paper over ...

Have you ever wondered about the air quality in your home or office? This wearable air quality pendant answers that question by monitoring TVOC levels throughout your day. Using the reliable SGP40 ...

These meters generally use a sensor to relay the flow measurements to a reading device. Nearly all types of flowmeters, from ultrasonic to turbines, are offered with pulse output flow signals. Sensing ...

Abstract: We present the design and testing of a 16-bit frequency to digital converter, based on AT89C51 micro-controller, for use in sensing applications. The system generates digital equivalents of ...

Neil Hannay explains how to understand flow meter sensor and pulse output types for efficient system operation FLOW meters have developed into many forms over the years, from mechanical devices – such ...

Capacitive touch interfaces really took hold after their success in the Apple iPod with its rotary wheel. Since then, touch buttons have made their way into almost every household appliance, ...

A taxi meter in cabs and autorickshaws calculates the fare based on the distance travelled. Here is a circuit that calculates the trip fare based on the rate per km and displays the distance travelled ...