temperature and humidity sensor arduino

Temperature and Humidity Sensor using Arduino

Temperature and Humidity Sensor using Arduino

Article Summary:


Temperature and humidity monitoring is essential in various fields such as agriculture, weather forecasting,
and indoor climate control. Arduino, an open-source electronics platform, provides a versatile solution for
creating temperature and humidity sensors. This article will explore the working principle behind these sensors
and guide you through the implementation of a temperature and humidity sensor using Arduino.

Working Principle

Temperature and humidity sensors measure the surrounding air’s temperature and moisture content. The most commonly
used sensor for this purpose is the DHT11 or DHT22 sensor. These sensors contain a thermistor to measure temperature
and a capacitive humidity sensor to measure humidity. By connecting these sensors to an Arduino board, we can read
the data and display it on a display or transmit it wirelessly to a computer for further analysis.

Arduino Implementation

To implement a temperature and humidity sensor using Arduino, you will need an Arduino board (such as Arduino Uno),
a DHT11 or DHT22 sensor, and some jumper wires. Connect the VCC pin of the sensor to 5V on the Arduino, the GND pin
to GND, and the data pin to a digital input pin (e.g., pin 2). Then, you can use the Arduino code to read the sensor
values and display them on an LCD or transmit them wirelessly using technologies like Bluetooth or Wi-Fi.


Temperature and humidity sensors using Arduino have various applications in different fields. Some of the common applications

  1. Agriculture: Monitoring temperature and humidity in greenhouses for optimal plant growth.
  2. Weather Forecasting: Gathering local weather data for accurate predictions.
  3. Indoor Climate Control: Regulating temperature and humidity levels in homes, offices, and industrial environments.
  4. Food Storage: Ensuring proper storage conditions for perishable goods.


In conclusion, temperature and humidity sensors using Arduino provide a cost-effective and customizable solution for monitoring
environmental conditions. By following the Arduino implementation steps outlined in this article, you can create your own
temperature and humidity sensor system. Whether it be for agricultural, meteorological, or indoor climate control purposes,
these sensors offer great potential for various applications.

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