I’ve been playing with the software for a couple of weeks and was ready to start incorporating hardware.
Last night I hooked up a chest freezer I’ve been using to ferment with and store beer in.
Currently, there are 3 kegs in there.
Only the compressor is controlled at the moment.
I set the cooling PWM period to 1 hour.
I saw varying periods as it dropped temp, but nothing over 45min.
This morning, I can see that it has settled at temp (35*F) and a period of ~8minutes.
The constraints are min off 5 min & min on 3 min.
It’s as if it is running on the constraints and ignoring the period setting.
I wanted a long period to avoid the rapid switching.
Why am I seeing this behavior?
If it matters, I did adjust the period value while the system was live.
I adjusted the PID values as well.
Right now, PID values are only P.
Here’s the graph: