However, you can request sensor readings every second. The DHT11 has a smaller range and it’s less accurate. However, it is a bit more expensive, and you can only request readings with 2 seconds interval. The DHT22 sensor has a better resolution and a wider temperature and humidity measurement range. For a more in-depth analysis of these sensors, please check the sensors’ datasheet. The following table compares some of the most important specifications of the DHT11 and DHT22 temperature and humidity sensors. The DHT11 and DHT22 are very similar, but differ in their specifications. Guide for DHT11/DHT22 Humidity and Temperature Sensor with Arduino.If you’re looking to use these sensors with the Arduino board, you can read the following tutorial: This makes them very easy to use with any microcontroller. These sensors contain a chip that does analog to digital conversion and spit out a digital signal with the temperature and humidity.
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