I’ve assembled a Photon out of box with 2 DS18B20; one on d2 and one on d3 since i don’t know how to gather temps on same digital input. Heck, I don’t even know how to code. My application is putting a probe each into a freezer each that reach just under 0 degrees F. I assume they are at 4-7 degr…

This might be worth a read. [image] [RESOLVED]Photon stopped reading temps from DS18B20 after months of use Troubleshooting 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 ab…

Thanks much. i read it and don’t understand why this would fix it. I’m hearing maybe i need to set the bit to 12 from 9. Still looking around.

I forked the Dallas library and changed 9 to 10 on the dallas.cpp. and defined below as 12. Let’s see if this helps… #include "spark-dallas-temperature/spark-dallas-temperature.h" #include "OneWire/OneWire.h" #define ONE_WIRE_BUS D3 // temporary - #define TEMPERATURE_PRECISION 12 OneWire oneWire(O…

Frustrated and Pleased at the same time. This change worked. I’m now seeing proper temperatures near and below 0 degree F. Now on to next phase.

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

Troubleshooting

timx May 18, 2016, 9:19pm 2

This might be worth a read.

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

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