I had a load cell under the collection jar that would adjust heat input (via PWM to SCR) to achieve a steady output rate (dW/dt) via outer PID loop, then lower the heat to just below boiling when it got to 700mL to keep it hot but pause output. It'd play a tone, I'd swap in a new jar then resume ignoring the whole thing. (I'm lying, I'd sit glued to that thin little stream of sanitization precursor teeter on breaking up the entire time.)

I stopped messing with it right before starting to measure/vary water supply through the condenser coils so I could more directly manage reflux ratio. Also had planned a float/load cell to calculate specific gravity.

All sorts of little side quests and fun mix of art/science to get into.

You know, if any of those other hobbies start to lose their lustre. :)

(for real though, the nodered on pi controlling a squadron of esp32 workers over wifi/mqtt was really nice, in case you would have any use for such a thing in any domain)

Haha I actually have a bag of chips but never bought a bath large enough to be worthwhile. Started going down the juniper/citrus/rosemary/coriander/etc route instead.