Got DHT22 sensors working with NodeMCU

Problem was lack of dht.begin() in code! This allowed a DHT11 to sort of work but not a DHT22.

Found my mistake by examining coding example by Muhammad at:
https://www.hackster.io/mafzal/temperature-monitoring-with-dht22-arduino-15b013.

And even deployed a unit in the cottage next door

So now Node-Red has some zone temperatures to use to control the MVs.