Circuit and working Fig. 2 shows the circuit diagram of the humidifier. The system is built around an Arduino Uno (MOD1), a 5V SPDT relay module, a humidity sensor (DHT22), an ultrasonic humidifier, ...

Aqara makes more smart sensors than almost anyone else, and I find them to be consistent and stable. Here are the presence ...

This paper introduces the design, calibration, and validation of a low-cost portable sensor for the real-time measurement of dust particles within the environment. The proposed design consists of low ...

This article presents the development and experimental verification of a temperature and humidity sensor featuring a stable structure and high sensitivity. The sensor utilizes a Mach-Zehnder ...

Bottom Line The Phyn Smart Water Sensor is easy to install anywhere in your home and will tell you when you’ve sprung a leak and when your temperature and humidity thresholds are breached.

This Arduino sketch demonstrates how to control a relay using a soil moisture sensor and two potentiometers to set the minimum and maximum thresholds for when the relay should turn on or off. The ...

A simple Arduino inline extension to Chinese Diesel Heaters to help maintain a stable temperature by gracefully shutting down the heater if it gets too hot, or turning it on if it gets too cold.

Browse 500+ Arduino projects with downloadable code and circuit diagrams. Complete tutorials for beginners and advanced makers.