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DS18B20 readings in 7K range
21 April 2013 - 06:28 PM
DS18B20 Readings
21 April 2013 - 01:26 PM
Good day everyone! Netduino noob here and I am having an issue with a project I am working on. I have a ND2+ hooked up to a bread board with the proper connections going to the ND2+. I have two DS18B20 temperature sensors hooked up in parallel one on the board and the other through a CAT5 cable, about 15 ft long, that is soldered to another sensor.
The issue I am having is when i put the sensors that i connected to the CAT5 in the freezer. I can watch my debug output of the temperatures drop and once it gets below 32 degrees Fahrenheit I start to get readings in the 7k range. Which if that is the case I don't think my ice cream is good anymore. If I bring the sensor out of the freezer and it starts to get warmer the readings start to normalize. If I stick the sensor in my fridge it will get down to 35 deg and read fine for hours. It appears to have something to do with temperatures under 32 degrees.
Has anyone had any similar experiences? Thank you all for your help!
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