So, I've been using the DHT22 sensors for a few weeks now, but I am low on ports for my board. I was told there was a way to connects multiple sensors through one input port in an array. How do you do so?
This kind of part?
What's the datasheet indicate about connecting them in parallel?
I really wonder how they could be placed two together on a single pin. For what I've read you can't even read them out through a port extender (never tried that one - I have enough other things that can go on the port extender), and they for sure don't have an individual address or so (like I2C devices).
So if you put two on a single GPIO, how can you ever know which one is responding? Will the devices know when to respond?
They cant.
DHT22s arnt addressable.
If you want to connect multiple temp sensors to the 1 pin , you need these type.