Correct temp reading on ds18b20 until near 0 and below then -196

[timx]

This might be worth a read.

[RESOLVED]Photon stopped reading temps from DS18B20 after months of use

I have a strange problem that I’m hoping someone can help me with. I’ve had a Photon reading from a BMP180, DS18B20 and DHT22 with a problem for about 3 months now. Until a few days ago that is. The Photon stopped grabbing temperature data from the DS18B20. All three sensors were reporting to a web server via Publish. The other two sensors continue to work without any problems. I have the Photon connected via USB to my PC for serial troubleshooting. It appears that the Photon sees the DS18B20 …