[AllanG]

Hi Allan

If you have any small breadboard you can easily test the sensor.
You can find here some info about how to do it:
https://sites.google.com/site/howfasthow...idthedht22


Here is the DHT22 pinout:



I already have heard of some DHT22 with the GND swapped with the NC pin.
It's safe connect both together. On the RX board the two are connected to GND.

Thanks for the suggestion. I don't have a breadboard (maybe this is a good time to ask Santa.. ) but it wouldn't be difficult to connect the sensor with a spare Nano to test. I have tried connecting pins 3 & 4 to gnd but it doesn't make any difference.

I'll let you know what happens when I get a spare or replacement sensor.

Thanks again.

Allan.