Has anyone else found the generic Thermometer probes al-la amazon or ebay to be very erratic in their readings? ranging wildly into the thousands to minus figures?
I have tested various probes and bought one on a board to test it thinking it may be to do with the resistors in circuit etc. Is it a part quality thing or are they just like that?
Charlie
The following DS18B20 thermometers have worked without issue for me:
I followed the wiring instructions provided here:
I am not sure what the issue is with my ones, I am buying the same ones as Wayland from Amazon, they all behave the same way. In some circumstances they are very reliable for a decent amount of time. I thought it could be due to use in water (they are supposed to be water proof) So I tried brand new ones, even with the resistor on a pre-made board.
I need to put more testing time isolated from the main project.
Charlie