I am curious about your graphs. Did you take all those gravity readings manually or is that a feature of the Zymatic? I am guessing manual. If so, that was hard work.
Second question on both graphs the temp drops suddenly about 3/4 way along the mash and then jumps back up. What's happening there? Just curious. I don't see a programmed drop on the mash temp editor screenshot you added later in the thread.
I like the way you're using the Zymatic. Great idea using it for experiments.
The Zymatic is run via a wifi controlled Ardrino - so it logs nearly everything that it does. I did nothing in regards to the temperature logging. You can add recipe notes, such as SG, but they only show up as a dot on the graph and not as I had shown them in the Excel version on the first post. Here is a screenshot from my online account:
Those dips you see are the temperature readings while there is little wort near the wort temp probe, which is when the system drains (after the mash it drains for 8 min into the keg for "boiling") and sometimes when it pauses (see the chilling dip in temp that comes up? The system pauses there to allow me to connect my chiller. I restart it when we are all hooked up.)
I hope to do many, many more experiments with this thing (even if it's just for my own curiosity). For me, that's the best part about this little system. It is highly controllable and incredibly accurate. I wish they would advertise it like that, because it certainly isn't something I would recommend for the 'new brewer' audience they are aiming for.