I agree, e-stops are a must. Mine is made to leak something like 0.06a to neutral. That's enough to trip the GFCI spa panel.
Nice controller for the BK as well. The Auber PIDs manual control is quite easy. It's also pretty easy to test that e-stop switch while brewing
, but I do have a contactor on each element as well so the on/off for each one is pretty easy.
Regarding PWM, I built this one: http://www.bakatronics.com/shop/item.aspx?itemid=383
. It was $8 at Gateway Electronics. There was one capacitor I changed though so it would elongate the cycle to about 2 seconds.
Have you seen the controllers at dragonstills? Check out this one: http://www.stilldragon.com/basic-controller.html
I'd like to know how a simple potentiometer connected to the control side of an SSR can work. Where's the control voltage come from?
You have a nice rig. I made my RIMs tube out of SS pipe, so it's not quite as streamlined as your is.
Serving - "Close Enough" Bigfoot Barleywine Clone, JD RIS (jealous?), Hard Apple Cider, American Wheat Ale, Nut Brown Ale, & Belgian Blondes...
On Deck -
In the hole - AIPA