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Old 03-05-2013, 02:06 PM   #1
Oct 2012
Posts: 24

I'm a Computer Engineer and I'm planning out an electric system on the cheap. At least, an Electric HLT and Kettle. (20 Gallon for the kettle and MLT. 15 Gallon for the HLT).

Anyway, I'm thinking the following: Put all the 220 wiring into its own enclosure and then put the control system (Raspberry PI or Arduino) into its own separate enclosure.

Two 1-wire buses would leave the control panel. One would be the measurement bus running out to the pots. The other would be the control bus which would run into the 220 V enclosure and would use a PIO chips and some support circuitry to control the SSRs.

I guess my goal is to isolate the "kill you dead" stuff from the control system as much as possible. I might even opto-isolate the 220V enclosure from the control bus if 1-wire supports it.

Anyway, just thinking out loud here. Anybody do something like this?

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Old 03-05-2013, 08:43 PM   #2
Apr 2012
Philadelphia, PA
Posts: 1,235
Liked 68 Times on 59 Posts

I think that's a pretty good idea myself.

You could also add a wireless dongle to the Raspberry Pi and use your smartphone as the input/output device.

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Old 03-07-2013, 02:14 AM   #3
Dec 2006
hudson, wi
Posts: 718
Liked 42 Times on 35 Posts

If I were to build my system again, I would definitely have two panels. One with all the 240 vac stuff, e.g., SSRs, contactors, distribution blocks, breakers, fuses, etc. and another for all the low voltage controls, e.g., PIDs, switches, etc. I think it would be more simple and more safe. YMMV.

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Old 03-07-2013, 03:14 AM   #4
Oct 2009
Posts: 198
Liked 2 Times on 2 Posts

it still all comes together some where, I see so many built where there is a high probably of splash or spills be careful and think it thru.
If you get advice on an electric brewing rig, you need to take it to a licensed electrician or two to have it looked over.
This stuff can kill you. When it comes right down to it, we're just some dudes on the internet.
I have seem some TERRIBLE advice on here in the past few months. I may even be guilty of bad advice myself.

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