Review on 🌡️ Advanced AM2302 Digital Temperature and Humidity Measurement Device by Dakota Afzalian

they work great with raspberry pi. You can see in the graph that I have 3 DHT22 sensors and they all agree within about half a degree Fahrenheit. The two I put together in that order (blue and yellow lines on the chart) are even closer, typically within 0.2 degrees Fahrenheit. each other. The green line is a sensor that I accidentally connected with too small a resistor (2.2 kΩ instead of 10 kΩ). Smoke started pouring out and it was too hot to touch. When I realized what I had done I wanted to throw it away but decided to try again. Surprisingly, the temperature sensor still works fine. Moisture toasted (always indicates 1%). So these things are pretty durable. When choosing between DHT11 and DHT22, note that DHT11 (orange on the chart) has large jumps of 2 degrees Fahrenheit, in contrast to DHT22, which changes 0.1-0.2 degrees Fahrenheit. The cost of DHT11 is 3-4 times less, but it has much lower accuracy.