Features: Hardware components: Arduino, relay module, jumper wires, and external power source Code: Arduino code for controlling the relay based on sensor input or a manual switch Applications: Home ...

This project is an Arduino-based air quality monitor that measures air quality, temperature, humidity, and detects light presence. It utilizes a DHT11 sensor for temperature and humidity readings, an ...

Humidity and temperature sensor DHT22 (S1) 1: Arduino Uno R3 (MOD1) 1: Ultrasonic humiditifier: 1: 5V SPDT relay module (RL1) 1: ... Fig. 2 shows the circuit diagram of the humidifier. The system is ...