Questions tagged [dht22]

a low cost humidity and temperature sensor with a single wire digital interface. The sensor is calibrated and doesn’t require extra components so you can get right to measuring relative humidity and temperature.

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How to use a stackable Rpi relay HAT to control 220V AC mains power?

So I want to wire two DHT22 sensors (5V) to a Pi and also control a lightbulb with 220V. As a plus this should be very compact and I don't want to solder or use breadboards/jumper cabling. I looked ...
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How to know if DHT11/DHT22 is working?

How to know if Temperature and humidity sensor DHT11 is working. I am trying to read data from DHT11, when I read data using Adafruit library it just keeps waiting for data. When I tried using https://...
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DHT22 temp sensor. Randomly dropping

I am having trouble with a dht22 sensor. It works well for most of the time but randomly the library I am using can no longer receive a reading until I unplug then plug the sensor back in. (just ...