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K. Power supply should be good, it its an Apple brand 2.5A power block with a Samsung brand name USB cable to the Pi, with a brand name USB cable from the Pi to Arduino. I can get a separate Arduino power supply if needed. I was more concerned that it was a programming issue.

I do not have an LCD screen set up, I have been accessing only via Fermentrack web interface from a different laptop. It seems like it isn't getting any input, it shows --.-F and the beer maintains whatever temp the profile was set at before it crashes.

Hello, I finally got everything working on Stretch/RPi 2B+/Sainsmart Uno and packaged in the project box, and it was running great for a few hours, but then the temp probes all started reading 0 degrees, with no inputs on either heat or cool until I recognize it and reboot the pi via putty...

Hello, I finally got everything working on Stretch/RPi 2B+/Sainsmart Uno and packaged in the project box, and it was running great for a few hours, but then the temp probes all started reading 0 degrees, with no inputs on either heat or cool until I recognize it and reboot the pi via putty...