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Raspberry Project Practice

Temperature and Humidity Monitoring

Temperature and Humidity Sensor

A temperature and humidity sensor, as its name suggests, is a sensor that can detect temperature and humidity in the environment. There are many kinds of temperature and humidity sensors, among which the most commonly used is the DHT series. This kind of sensor can be calibrated automatically and has a digital output. The sensor includes a capacitive sensor element that can measure relative humidity, and an NTC thermistor that can measure temperature. For this lesson, we choose the DHT11 sensor, which can be used in most prototype projects. If your project needs a larger measurement range and higher accuracy, such as a medical system or weather station, you can choose the DHT20 sensor instead.


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