McKnuckle
Well-Known Member
I imagine that the difference is related to the density of wort/mash vs. plain water. It should theoretically take more time to heat an equivalent volume of mash, which would affect the PID’s settings.
the pid has to "learn" the correct algorithm and that done by setting up the task at hand and performing the autotune where it adusts and "programs" itself to know preemptively when to shut off and turn on the element and at which levels to climb to and maintain temps without overshooting the amount of power and time it takes for the liquid to climb to temp completely depends on the amount of water and the thermal load (IE grains drawing temps from that water) so all these conditions ideally should be the same as in a real application run when tuning... This is the difference between PID tech and hysteresis like a home thermostat uses. you can research it and find some manual pid settings you can use which will work ok without tuning for this application but as you have found the generic out of the box settings are too far out of the ballpark for what you need currently.Enlighten me as to the why here.
The only thing it gets info from is the temp probe which is immersed in water. I mean grain too, but how could it possibly know that? It only reads temps.
maybe I'll do it with water and then do it again at the end of mashing next brew?
I did it with water today and it's now working perfectly. With just water anyways.
I'm gonna take your advice and tune it again with spent grain and water after my next brew.
I did steps 1, 2, & 3.What exactly did you do @NewJersey? I've looked at the post on the FaceBook user group, but the instructions seems somewhat vague.
Thank you sir!Once you're in front of the thing with your phone open it's actually pretty easy
You do it too?Thank you sir!
You do it too?
I had set my temp at 149 in auto more before running the autotuneHaven’t yet but I’m going to. If I can’t get to it this week, I’ll give it a go this weekend.
One other question for you. Did you set your mash temp as normal when you did the water test, and then run the auto tune? Do you need to wait until you hit the set temp, or can you do it at any point during the heating cycle?