Posting temps from Rpi to brewersfriend

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Zippy123

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Appleton, Wisconsin
I have a few Rapt pills so I am familiar with posting data to brewersfriend.com for my brewing sessions. Since I usually brew multiple batches at once, I sometimes run out of pills. I am fermenting small batches in corny kegs and I thought it would be nice to at least know the temp of the primary fermenters. It occurred to me I have a few Raspberry Pi's and a few DS18B20 temp sensors left over from other DIY projects (Covid lockdown projects). Since I am somewhat techie but definately not a programmer, I thought I'd ask ChatGPT for some help reading temp sensors from a Pi and then posting that data to brewersfriend.com. Well dang it all, it works! I now have an Rpi in my office with two temp sensors taped to the sides of the corny kegs. One of them has a Rapt pill inside so I can validate the temperature measured by the sensors on the outside of the kegs with the liquid temperature inside the kegs (consistent 0.7 degree offset).

I may add another temp sensor to read ambient. I have duplicated this effort and put an Rpi in my basement "lager" corner to measure and record the ambient temperature and temperature of a corny keg that is lagering. Since the DS18B20 temp sensors use a serial data send, I will be adding temp sensors to the lager corner so I can log the actual temperature of the lagering vessel.

I am practically giddy! If there is interest, I can try to document what I did so you can try it too.

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