CMM2: DS18B20 Temp sensor problem

Author	Message
lizby Guru Joined: 17/05/2016 Location: United States Posts: 3616	Posted: 12:22pm 09 Aug 2020         bigmik said   What is the zero degrees issue? Paul_L once suggested to me that a very good way of testing/comparing perhaps dodgy waterproof DS18B20s was to put crushed ice in a glass, pour in a modest amount of chilled water, wait a few minutes for the ice to bring the water to very close to freezing, and insert the probes. That should be very close to 0C if you have the mix right, and a well-established universal calibration point.