DHT22 clone - humidity and temperature sensor - breadboard friendly

Some time ago we got DHT22 clones to test from our supplier. And they seems to be working very well, good accuracy and better price than original ones, so introducing them to our offer was no brainier. So how they work compared to original DHT22?

I randomly selected two sensors - from clones and using AM2302. As you can see, these random copies even perform better (concurrence of results) better. 1:0 for copies.

Specification:

Humidity sensor operating in the range of 5% - 99%, power supply 3-5V. The module has three leads, marked -, +, out. Accordingly, these are ground (GND), power supply and data bus. The sensor board already has a pull-up resistor, so you can connect the sensor directly to Arduino/ESP.

A special protocol is used on the data bus to read the measured values. There are many libraries available that support DHTxx sensors. You can recommend, for example, those from Adafruit, they work on both Arduino and ESP.

Due to how Adafruit has organized its libraries, you need to install 3 of them to work. Here is an example entry from platformio.ini:

lib_deps =
adafruit/Adafruit Unified Sensor@^1.1.15
adafruit/DHT sensor library@^1.4.6
adafruit/Adafruit DHT Unified@^1.0.0