I just pulled off the hex and noted short VDD and also ground short faults. These also showed up in owfs. I'm waiting on a scratchpad dump from onewireviewer, but how is this even possible? The device is both prebuilt commercially and also reads fine into a DS9490R. Is the data being read incorrectly into owfs?
Thanks, Colin On 6/29/2016 12:03 PM, Colin Reese wrote: > Hello all, > > I have a Datanab TC to 1Wire that uses a MAX31850: > > http://www.datanab.com/sensors/1wire-%20thermocouple-sensor-thrmcpl_k.php > > The device reads fine using a DS9490R on Windows using a package I have > written to read the device as in the datasheet (OneWire Viewer does not > read temperature on the 31850). > > Using a DS2483 on owfs, I get some weird stuff. According to the man > page here (http://owfs.org/uploads/DS1825.html), the temperature should > give CJC, and thermocouple should give CJC-compensated temperature. > These values are as follows (owfs is mounted in Celsius): > > Temp (CJT): -1.75 > TC: 417 > > Clearly something is amiss. Moving the 1Wire connection without touching > the TC gives: > > CJC: 22C > TC: 55C > > Ideas? > > Thanks, > Colin > > ------------------------------------------------------------------------------ Attend Shape: An AT&T Tech Expo July 15-16. Meet us at AT&T Park in San Francisco, CA to explore cutting-edge tech and listen to tech luminaries present their vision of the future. This family event has something for everyone, including kids. Get more information and register today. http://sdm.link/attshape _______________________________________________ Owfs-developers mailing list Owfs-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/owfs-developers
