CMM2: DS18B20 Temp sensor problem


Author Message
bigmik

Guru

Joined: 20/06/2011
Location: Australia
Posts: 2979
Posted: 02:42am 10 Aug 2020      

Hi Jim, All,


I did the ice water trick and both sensors reported the same readings within 0.25C all the way down from the ambient of 19.5C down to where they stopped updating at 0.5C

Mouser =  0.5   Jaycar =  0.5
Mouser =  0.5   Jaycar =  0.5
Mouser =  0.5   Jaycar =  0.5
Mouser =  0.5   Jaycar =  0.5
Mouser =  0.5   Jaycar =  0.5
Mouser =  0.5   Jaycar =  0.5
Mouser =  0.5   Jaycar =  0.5
Mouser =  0.5   Jaycar =  0.5
Mouser =  0.5   Jaycar =  0.5
Mouser =  0.5   Jaycar =  0.5
Mouser =  0.5   Jaycar =  0.5



The Jaycar unit seems to respond quicker to the change but only by the 0.25C then the Mouser unit caught up and they were together again until the Jaycar once again responded to drop before the Mouser one

As far as I can tell the 2 sensors as are accurate as each other.

It took a good 10 minutes for both units to settle at 0.5C

Kind Regards

Mick