Announcing the "ST_Anything" Arduino/ThingShield Project

[ritchierich (Michael)]

@Ryan7777

Usually you would have all the DS18B20’s sharing a single pin as they all should have unique addresses from the factory. I see that you have the capability for multiple sensors on the same bus by reading the header file but I have them all on their own pins because I couldn’t figure out how to modify the code in the sketch to implement this. Not to beat on you, because I can’t claim to be the comment king of coding and you’re giving your time and energy for free, but commenting your code helps so much for the rest of us! So I guess is there some example code I missed on how this is done or could you please post some?

Please see this project I documented a few years ago where I have 2 temp sensors on the same pin. You have to first get the sensor serial number of each probe as documented in this post:

Arduino ThingShield Fridge/Freezer Monitor

Having lost a lot of food and beverages when my previous garage refrigerator failed, I have been a little paranoid about it happening again. For the past few years I have been using a temperature monitor that integrates with a La Crosse weather station I bought. But this solution has been very limited and is mostly false positives and has an annual fee. I get alerted via email when my children go raiding the freezer for ice cream as an example. I recently bought an Arduino and decided to tackle something to alert me based on my criteria instead. Thus the Fridge Monitor was developed. I would assume others in the Community live in areas with warm summers or have young children so I thought I would share this project. Parts you will need: Arduino Uno R3 - http://www.amazon.com/dp/B0…

Specifically:

@ritchierich

Please Note: Multiple DS18B20 can be hooked up to the same digital pin. In order to do this you will need to determine the serial numbers of the sensors. More details on how to do this can be found here:
http://www.hacktronics.com/Tutorials/arduino-1-wire-address-finder.html

Then in your sketch you will address them:
DeviceAddress freezerProbe = { 0x28, 0xFF, 0x17, 0x99, 0x01, 0x15, 0x02, 0x13 };
DeviceAddress fridgeProbe = { 0x28, 0xFF, 0xD3, 0x6D, 0x01, 0x15, 0x02, 0x51 };