Wine Temp Control System: Update 1

I kicked off guava wine this weekend and it gave me an opportunity to test the Arduino temperature control system Adam and I built.

I acknowledge this is completely over-engineered. Let us have our fun, OK?

I secured the pump under the spigot.

I ran the thermometer through the hole in the lid and directly into the wine.

And this is probably the cause of my temperature fluctuations. I'm set at 15c/59F, the lower tolerance of my qa23 yeast. The Fi hangs around too long and overdrives the Fp, all of which means it continues to heat for a little while when it should have switched back to cooling.

The fluctuations seem to be getting smaller so I'm going to let it ride and see.