I have an Emonbase running on a pi4 situated in a server room processing data from various remote wireless temperature sensors within a factory. I have now been asked to monitor temperatures within the server room, is it possible to add sensors directly to the pi’s gpios and get them to show as inputs in emoncms.
Have you searched the forum? I believe it’s been done for an DS18B20, possibly not for the DHT22.
The “interfacer” exists to get the data into emonHub & emonCMS: https://github.com/openenergymonitor/emonhub/tree/minimalmodbus_multiple_meters/conf/interfacer_examples/DS18B20
For hardware, try 1-Wire Host Adapters, Sheepwalk Electronics I’ve no experience of any of those modules, so I can’t make a recommendation.
Looks like the DS18B20 interfacer will do the trick. Thank you very much.