DHT11 Digital Humidity Temperature Sensor/Arudino (4 Pieces) - OctagonStar Product Review Review

Works great, quite well. DHT22 has higher resolution. DHT11 has 1C and 1% pitch. The pins are thin so they don't like being plugged into a breadboard.

Everything seems fine. The pins are the standard thickness for dht 11 and dht 22. However, they are thin and do not make good contact with the breadboard. Solder some wires and proceed.

Made sure I had the correct wiring and 5v power supply. Tried several different DHT sensor libraries and different digital and analog pin inputs and still read nan. I bought a DHT22 sensor from adafruit, it works with no problems. DO NOT BUY

If you are looking for the cheapest temperature and humidity sensor, here is your device. However, this is terribly inaccurate for what I needed them for, as +-2C is a big difference for AC control.

work. I later learned that the temperature resolution is only 1 degree Celsius. Almost 2 degrees Fahrenheit. This is not sufficient for many applications such as a thermostat. You have to choose the Arduino library carefully, with Nodemcu you can read data from these sensors without a pull-up resistor, but you have to use the right library.