Thanks Paul. Really appreciate your time and help. Yes I do have a DDM, it just broke down a few months ago (I think I broke it down by putting wrong input, wrong setting). Will get another one. Agree it's a must have.
I have a Wemos D1 mini, but didn't know what to connect where, so I got this other one, which as you say it's kind of a ESP8266 embedded on an Arduino Uno. Not sure if it's R2 or R3 (but it's exactly the same as in the pic attached). Maybe I should use the Wemos D1 Mini I have.
yes the max6675 works standalone, but in this code it doesn't. So not sure if it's the libraries or something else. Attached the schematic of how I connected things. Is pdf format ok?
Thanks again for the guidance.
Diagram.pdf (131.8 KB)