rycov

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if the relay is rated for 12 v can i run it off a 5 v phone charger?

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notaburger

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This question is for those of you that have built one of these systems.

I am planning on using one of these to convert a freezer to a kegerator and was wondering what the sensitivity is on the unit. Will it be constantly turning my compressor on and off or does it not kick on until it breaks a certain range (like the johnson controllers)?

Thanks,
Dave

android

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i think there is a build in delay on the thermostat that i used. it might turn on the freezer more than something with lots of set points, but i bet it won't be that much more.

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primary: Tasty Blonde
kegged: Maibock, Schwarzbier, Irish Red, Oak Aged Dark Belgian

ebay temp controller | thermostat temp controller

rycov

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the thermostat i bought has settings that i can change to have 1 3 or5 degree "dead zone". i would think all home thermostats would have this, or else it would be cutting your AC and heater off and on all day.

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motorhead69

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It's working nicely at controlling this fridge, can't wait to get it to the real one. I used an automotive relay instead of the SSR.

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stamandster

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Could this be used to run a Water Heating element??

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Great Beer, Period
Punctuate your day with great beer

Hang Glider

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Technically, if the relay is built to handle that voltage/amperage, yes. The temperature-sensitive device is only turning the relay on or off.

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It must be understood that common sense and caution are factors which cannot be built into this product and must be supplied by the operator.

EarthBound

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I'm using this idea for my fermentation chamber. I already have modified thermostat from my old SOF chiller that I can use. Pretty much all I need to do is add a SSR.



Yes, but I haven't seen anyone do this before. Probably because the temperature reading may not be accurate enough. Have you found anyone who has done it?

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"You can do anything you set your mind to when you have vision, determination, and an endless supply of beer."

bmcgarrahan

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I am having my first brew day today and I built one of these yesterday in order to better control my temperature (I keep my house between 76 and 78 which is bad for fermentation). I ordered a SSR from eBay and I am temporarily using an automotive relay from Radio Shack. Other than the Hunter Thermostat seems to be about 2.5 degrees off I am quite happy and I have not set the house on fire. American Wheat (all-grain) is mashing right now at the target temp.

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B. McGarrahan
GAME 2007

djash40

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Just an fyi the ssr relays won't switch without a load of some sort.
So just powering up the low voltage control side and checking for continuity may leave you to believe they aren't working.