DS18B20 Thermometer

[Jason January 31, 2016 at 4:19 pm Post count: 0]

#3101 Reply |

Hello, I bought your Thermometer probe off of Amazon and have been trying connect it too a Rasberry Pi. I want to make sure I know which wire color is what. Red, Green, Black.

Red = 3.3v?
Green = Data?
Black = Ground?

Thank you for your help.
~js

[DrokKeymaster February 1, 2016 at 7:23 am Post count: 2971]

#3110 Reply |

Hello Jason,
Could you please let us know your order ID of the Asin of the item you purchased?
With your help, we can solve this problem more quickly.
Waiting for your reply.
Best regards

[Nick September 10, 2017 at 7:07 pm Post count: 0]

#21631 Reply |

I also just got a DS18B20 and am mostly happy. The wires were red,yellow, green. I eventually figured out that:

red: 5v/3.3v

yellow: gnd (what?!?!)

green: data

I know that there is no universal color scheme for these kinds of things, but this one was just crazy. Seriously, yellow for ground? In this case due to my setup I was able to try different  combinations without risk of frying anything, but I can imagine some contexts where trial and error isn’t an option. Please try to include color code info when you ship components.

Otherwise, once I got everything sorted out I stuck the thing under my tongue and got 36C. Awesome!

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