LM35: Connect VCC to 5V, GND to GND, and OUT to an analog pin (e.g., A0). DHT11/DHT22: Connect VCC to 5V, GND to GND, and DATA to a digital pin (e.g., D2). LCD with I2C: SDA to A4 (Arduino Uno) or ...

The Arduino Monitoring and Control System is a simple Arduino-based program designed to read analog sensor values, control digital outputs, and display information on an I2C LCD display. The system ...

Whereas a typical scale would then simply show the resulting number on an LCD display, [Mirko] decided to use a moving coil meter driven by the Arduino’s analog output.

This paper presents designing and implementing an Automatic room temperature control system using the Arduino and DHT11 sensor. The fan speed control system has also been proposed. Here, the user sets ...