Hi,
I just found this project on tindie and I think I should order some ...
from the arduino library I can see that it is maybe only supporting temperatures grater than 0°C (?) in an exact way ?
(cause the RTD_C constant is not used ?)
It would be great to fix this (or maybe I can extend the library myself) for temperatures below 0°C
The formulas are quite simple, I found them here --> https://24max.de/elektronik/Pt100-Formulas.pdf