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This project demonstrates how to use a DHT11 humidity sensor with an Arduino Uno to measure the relative humidity in the environment. The sensor provides digital output that is read by the Arduino, ...
Humidity Sensor (DHT22) The DHT-11 (also named as AM2302) is a digital-output, relative humidity, and temperature sensor. It uses a capacitive humidity sensor and a thermistor to measure the ...
If left on, the running fan wastes electricity and shortens the lifespan of your fan. So, install a humidity sensor that's connected to your fan, and automatically shuts it off when appropriate.