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Home Brew Forums > Home Brewing Beer > DIY Projects > Fermenters > ebay aquarium temp controller build
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Old 07-02-2011, 02:07 AM   #1581
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Yes it can be used to control a fridge. The programming is very easy, just push a couple buttons to switch back and forth between heating and cooling mode. I have 5 controllers total, three like yours (one in my keezer and two in my HERMS control panel), and two STC-1000's for my ferm chambers. The ones like yours are only single stage, but my keezer and control panel don't need dual stage and I was able to get them way cheaper than more STC-1000's would have been. I also prefer the SS probes on the single stage units much more than the plastic ones on the STC-1000.
I wired it up and the relay clicks but doesn't turn the light on or off. I put the white and black in the power and the switching, then tied the ground together. Is this right?
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Old 07-02-2011, 04:14 AM   #1582
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I wired it up and the relay clicks but doesn't turn the light on or off. I put the white and black in the power and the switching, then tied the ground together. Is this right?
It's hard to tell from your description, but I don't think that's right. I'll draw something up and post it here shortly.

It should look somthing like this. You can also swap the hot and neutral so that it's the hot that gets switched instead of the neutral.

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Old 07-02-2011, 11:46 AM   #1583
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2) What kind of fan can I wire into it so that it come on only when the compressor comes on? Will a standard PC fan work? And do I just splice the wire in with the wires for the outlet to run the freezer?
I just used a small, four-inch fan that I picked up in the automotive section (which is where all of their fans are stocked). It was $6.99, runs on AC, and get plugged into the same receptacle that runs the keezer, so it runs when the keezer runs.
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Old 07-05-2011, 05:39 AM   #1584
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hey guys, quick question. will the average mini fridge hold a temp around 60-65 without a temp controller? i know that's warm for a fridge. i can get one for a decent price but am doubting my ability to hook up a temp controller.

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Old 07-05-2011, 06:36 AM   #1585
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hey guys, quick question. will the average mini fridge hold a temp around 60-65 without a temp controller? i know that's warm for a fridge. i can get one for a decent price but am doubting my ability to hook up a temp controller.
I'm not sure. Some of them can take thermostat out and turn a hidden screw to raise the min/max temperatures, but IMO, a controller is still easier, and much more precise (and pretty essential if you're using it to ferment in rather than to chill kegs).

It's easier than it sounds, and there's a first time for everything, you know? Homebrewing projects like these have pushed me to learn some DIY skills I didn't have before... and if you have any questions, plenty of people are here to help you out!
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Old 07-05-2011, 06:56 AM   #1586
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Originally Posted by MrManifesto
hey guys, quick question. will the average mini fridge hold a temp around 60-65 without a temp controller? i know that's warm for a fridge. i can get one for a decent price but am doubting my ability to hook up a temp controller.
I just got a mini fridge off Craigslist and even on minimum it will go down into the low 40s
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Old 07-06-2011, 03:37 AM   #1587
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here is pic of mine...

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Old 07-09-2011, 01:56 AM   #1588
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I just set mine up using a 6x6x4 from Home Depot and a 15 cf chest freezer. After the 3 minute delay, it started right up!

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Old 07-10-2011, 05:52 AM   #1589
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Ok this controller off of ebay, the 110v version, i plan on using it for a aquarium now here is my question can you set it were the cold side comes on at say 84° but the heat side does not come until it reaches say below 76°? Can both sides have there own setting? Also i dont know if anyone has done this yet as i am not reading that many pages but i am going to add a relay to my cold side to make stuff like my heat building aquarium lights shut off as well when the cold side comes on.

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Old 07-10-2011, 12:34 PM   #1590
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I don't believe this particular unit can do two different temps.

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