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DHT22 datalogging

DHT22 datalogging

By admin on 04/02/2012

By connecting a DHT22 temperature and humidity sensor, a DS1307 RTC module and an SD card module to the Arduino Mega 2560 we can make a data logging system. The DHT22 sensor measures the temperature, the DS1307 gives us the date and time and this data is then written to the SD card over the […]

Posted in Arduino sketches | Tagged DHT22 | 5 Responses

DHT22 testing

By admin on 03/01/2012

One of the many sensors I bought is the DHT22. This is a digital temperature and humidity sensor. It has 4 pins but only 3 are used. To get it to work you will need the DHT library, this library supports both the DHT11 and DHT22 sensors. I found this nice example sketch for the […]

Posted in Arduino sketches | Tagged DHT22 | Leave a response

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