Hi, is there somewhere an actual working example to read multiple Dallas DS18b20 temperature sensors and maybe print them to the serial port? I’ve read several threads so far and tried 4 different ports example codes but none of them where working on my Spark Core. There were always include errors…

It looks like the version of the library that is being used by the WebIDE is out of date? The problem is in OneWire.h #define FALSE 0 #define TRUE 1 These should not be there (and looking through github history last year, they were removed, and still is removed in the latest version .) The versi…

I got it to compile by changing the include for the onewire.h so that it is now: #include "OneWire/OneWire.h" Using this onewire example I am getting an output from the sensor but it is wrong. ROM = 28 9C 4E DE 6 0 0 5C Chip = DS18B20 Data = 1 1 4B 46 7F FF 1 10 14 FF CRC=A7 Temperature = …

I did figure out how to get the right temp using the spark-Dallas-temperature library. I had to write my own application since there wasn’t an example. The other issue I had was that I was trying to work on it way to late with my wife continuing to remind me that it was bed time. Turns out I put …

I have been working on getting the examples working in the core+photon port of OneWire and DallasTemperature . The port works but the examples are taking a little longer. So far I have “Multiple” and “Alarm” compiling. Note if you want to try and fork these examples you have to add the Particle-On…

Has anyone tried to get the max31850 chips working? I have it working on an Arduino but would like to use my photon. If nobody has worked on this, I’ll give it a try but it will take a while as I’m a little time constrained ATM.

Thanks to everyone for sharing these great resources. I was able to build two wireless thermometers with what you’ve shared. After much testing, I installed one of the thermometers. I’ve mounted the Core in a project box and mounted it to the wall, then routed the DS18b20 into our chest freezer. …

My experience with these is that when you are reading -127, you are getting all 1’s back on the read and something in the connections is wrong. Where did you put the pull-up resistor? At the Core end of the wires?

Thanks for your reply. Yes, the resistor is at the core end.

I haven’t test this after the rename to Particle, but this is my source code for sous vide with Core (am using ds18b20). You can try to drop in the libraries as is, and see if it works.

@Soemarko , your source code works great! I edited out everything I didn’t need for my purpose. The core I have monitoring my deep freezer now reports the actual temperature rather than -127. I had done quite a bit of searching last night and ran across a thread on the arduino forums by someone th…

DS18b20 Working Example?

Getting Started

MORA October 5, 2015, 9:18am 29

I published a lib that works, its not as clean as using the onewire lib though, but it works

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DS18b20 Working Example?

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