CMM2: DS18B20 Temp sensor problem

Author	Message
TassyJim Guru Joined: 07/08/2011 Location: Australia Posts: 6210	Posted: 08:36pm 13 Mar 2025         Quote   The magic 473ms seems to work for all modes, but no ms less..even for mode 0 Based on my test code, your chip pretends to change mode but takes the same time for each resolution. That is not possible. Your chip is of uncertain accuracy and bears no resemblance to the data sheet figures. Peter has added code to allow these dubious chips to be used more easily but it in no way makes them "genuine" If you change the chip, you will have to determine the timing again so they are not readily replaceable. Each one needs calibrating for each resolution of interest. Jim