Is there a way to use the DHT22 Temperature and Relative Humidity Sensor Module as a stand alone? Or does it need to be integrated into an arduino?
I just need to measure temperature and RH for a 1.2 cubic meter space at std temp and pressure
I don’t think it can be used for any meaningful purpose without some smarts connected to it. The “smarts” needs to tell the sensor to send the sensor readings, read them in, convert them to a useable value, and then act on that data if required.
Fortunately, there is a library available to do the heavy lifting, and a few lines of code can do all the above.
The DHT22 outputs a digital signal. You need something to turn this signal into something human readable, and an Arduino is going to be the easiest way to do it.
If you only need an instantaneous reading, just buy a temperature and humidity station. If you need data logging, look into an arduino and SD card (or you could use a fancy weather station).
Thank you kindly Robin57159 and Oliver33 for your responses
You are better off with a BME280 or BMP280, E does pressure as well as humidity and temp, much more accurate than the DHT22
ESP32 is also good as a basic board to connect to the sensor, it can use micropython so is an easy setup.
In the end whatever works for you is best.