Thus, they entered a heart rate sensor to our 2025 One Hertz Challenge! The build is based around a Wemos D1 mini, a ESP8266 development board.

The latest farming technology utilizes specialized electrochemical soil sensors for precision agriculture. Soil pH is the primary soil attribute which influences the crop yield by affecting the ...

Learn how to interface ESP32 thermal printer with complete tutorial. Includes PNP-500 wiring, Arduino code, circuit diagrams, and projects for receipt printing, barcodes, and QR codes. Perfect for ...

Overall, this physiological pH responsive integrated antifouling and antimicrobial interface presented a promising and convenient platform for next-generation biomedical devices requiring antifouling ...

Epidermal wearable sensing is a revolutionary concept with the potential of accomplishing a genuine digital transformation in research fields, such as sports physiology, clinical diagnostics, and ...

This paper introduces a multi-channel A/D converter for multi-sensor systems. In conventional Delta-Sigma ADCs, there is a problem of latency in the digital filter when switching inputs during multi ...

This project aims to monitor indoor air quality using an Arduino Uno microcontroller along with an MQ135 gas sensor, a DHT11 temperature and humidity sensor, and a basic LED indicator. The system is ...