Thanks for the great guide. I have a Temper2 and it worked flawless with my Raspi until the outside temperature went below -3.8C
It's a strange bug, but the unit will not report a lower temperature than this even if it is much colder outside.
I have switched to another Temper2 with the same result. I have also reported the bug to the driver programmer https://github.com/peterfarsinsen/pcsensor but so far no response. Do you have a clue what can be wrong? Can you test if your system will work below -3.8C?
Here is a graph to illustrate my problem:
Hope it is ok with English. Ich verstehe ein bisschen deutsch aber nicht viel