Received my Spark 4 and it is up and running with an RPi 4B. Now I can “explore” and learn about its possibilities without disrupting our Spark 3 fermenting operations. Ultimately, I want to run a new RIMS brewing system with it.
For fermentation temperature control, I currently have a new Glass Door Merchandizer (Fermentation Fridge AVA), running on one of the Spark 3’s with the thermostat completely bypassed. The evaporator fan is currently piggybacked on the compressor SSR since the factory control of the evaporator fan was within the solid state factory thermostat. The factory “logic” ran the evaporator fan for about 1 minute after the compressor shut down. I want the fan operating on its own SSR and be able to run for 1 to 2 minutes after the compressor SSR turns off. When the evaporator fan shuts down with the compressor, I get a frozen evaporator when trying to lager in the high Houston humidity. Our other fermentation setup with a continuously running evaporator fan does not have this issue.
Can I do a “Time Delay Deenergize” control scheme within brewblox? If its possible, can you point me in the right direction?