I was having trouble with wildly fluctuating values for both temperature and humidity with a DHT11 using a NodeMCU 1.0 board. The humidity would periodically be in the 150-160% range, while the temperature would drop to 0.
Here's what I did to solve it.
- Switched from the Adafruit DHT library to the DHTesp library.
- Changed from INPUT to INPUT_PULLUP on the GPIO pin in my sketch.
You can see on the attached charts from Home Assistant when I updated the sketch, as the temp and humidity values immediately stabilized.
Just thought anybody else trying to get their DHT11 working might want to know.
