If you have used a DHT11 or DHT22, you have experienced the sensors are so out of whack that you can't get a real reading. Now for kids in a classroom that's not good. Teaching my students weather related phenomena like static electricity and other cools tuff requires the students to accurately follow the Scientific method. This is impossible due to the company making the mini sensors for RPi or Arduino et al.
I have connected more than ten of each sensor DHT11 and DHT22 and none of them provide any similar readings. They are off by up to +- 30%
The kids are stressed because their projects don't work. We can't calibrate the sensor thanks to Ansong (manufacturer) lack of quality control, none of these are even close to accurate.
All that being said, can someone please create an accurate RH reader by hacking the current DHT22 or create a completely new sensor that is easy to calibrate and accurate. I'd do it but I have no idea how to make the thing.
For all the scientists, students and teachers out here, thank you so much.