I am trying to use a ntc 10k instead of a ds18b20. I see many bad readings with ds18b20. I have some photons with some sensors each one and all behave similar.
I prepared a protoboard with a schematic I found on the internet (resistor as pulldown) to test the ntc and it seems to work fine.
I have an already prepared end pcb but in this one I am using a pullup instead of pulldown. I tried to run the code with this configuration and measures are wrong. Should I change something in code in this case?
I am using this library (https://github.com/kegnet/photon-thermistor).
Is it possible to use pullup with an ntc?