Temperature and Humidity Indicator Without RTC

Temperature and Humidity Indicator Without RTC

This project demonstrates a temperature and humidity monitoring system using Arduino and the DHT11 sensor. The DHT11 digital sensor provides calibrated temperature and humidity readings via a single-wire protocol. An Arduino Uno reads the sensor data at one-second intervals and displays the current temperature in Celsius and relative humidity percentage on a 16x2 LCD screen. Unlike designs that incorporate a real-time clock module, this implementation focuses on environmental sensing alone, reducing component count and complexity. The system is ideal for indoor climate monitoring, server room surveillance, and greenhouse management where absolute time-stamping is unnecessary.

Components

Arduino Uno
DHT11 Temperature/Humidity Sensor
16x2 LCD Display
10K Potentiometer
Breadboard & Jumper Wires