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Home Brew Forums > Home Brewing Beer > DIY Projects > Fermenters > DIY temp controller
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Old 09-10-2007, 03:35 PM   #1
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Default DIY temp controller

I just finished building a temperature controller for a mini-fridge I acquired. Total cost was ~$30.00. If anyone is interested, I'll post schematics, PCB layout, part numbers, pics.

I started with the cheapest digital thermostat I could find, and designed an outlet switchbox that interfaces with it. It controls both cool and heat, for use in summer and winter. It can regulate within 1 degree F down to 45 degrees, so not all the way into the lower lager temps. For that, I found the built-in fridge thermostat to be suitable.

Let me know if there's interest.

-PoB

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Old 09-10-2007, 04:01 PM   #2
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I'm interested, please post the part numbers and stuff. Can't wait to see how it was done.

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Old 09-10-2007, 04:02 PM   #3
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I'd be much interested in what you have. Please post more details!

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Old 09-10-2007, 06:42 PM   #4
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Ditto; interested!

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Old 09-10-2007, 08:36 PM   #5
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I am also interested, I was just going to work on a similar project... I am building a double fermentation box and would like to adjust the cooling/heating accordingly, but this would be a good thing to look at.

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Old 09-10-2007, 09:03 PM   #6
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Count me in! I would like to see how you've done it, and take a look at the details.

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Old 09-11-2007, 12:26 AM   #7
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Alright, I'm home now, and I'll try to take some pictures tonight and clean up my schematics. Wish I'd taken pics during construction. Hindsight is 20/20.

-PoB

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Old 09-11-2007, 05:14 AM   #8
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Alright, here's a writeup about the controller. As it says at the beginning, its not very good, but I'll try to fix it up after some sleep.

Good luck making sense of it. The schematic an PCB images should at least be some help.

DIY Temperature Controller

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Old 09-11-2007, 04:12 PM   #9
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Awesome title for your blog, my roommates all call me an enginerd. I had very similar plans for my temp controller, but was thinking of building the thermostat myself. Maybe I should reconsider. Soon as I can get past all this school work I plan to finish the controller.

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"No sense having empty carboys around when full ones take up just as much space. " - Me

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Old 09-11-2007, 04:28 PM   #10
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Dude, I wish I had the brains to build something like that.

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