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-   -   Arduino Kegerator Temperature Controller (http://www.homebrewtalk.com/f252/arduino-kegerator-temperature-controller-330763/)

luke_l 05-24-2012 02:35 AM

Arduino Kegerator Temperature Controller
 
4 Attachment(s)

So I have been slowly getting into kegging, and recently got a great deal on a small bar fridge, the Danby one which holds 2 cornies. I find that the factory temperature controller (in mine at least) pretty much sucks, and can't hold a constant temperature. I had a glass of water in it, for checking liquid temperature, and it would vary from 5C to frozen, so I had to do something. I decided to build an Arduino one with mostly stuff I had laying around, so it didn't cost me much. If you had to go from scratch, I would say around $20 probably (ebay prices). Basically, I have a temperature probe in the fridge which is a 'onewire' sensor, super easy to work with. The arduino can be set in 0.5 degree increments, and is currently programmed to keep it within 1 degree of that, and it also has a 5 minute compressor cool-down time programmed in. I built a remote "relay box" which also has the guts from a wall wart transformer, which feeds into the circuit board so that I don't need to have 2 things plugged in. Still need to build a box for the circuit board/LCD, but I am trying to decide what I want to do... might dremel out a cutout in the door for it, or in the bump on top near the front (bad for spillage once I install my taps).
I know the temperature is set kinda high, but I just got it going and want to make sure its accurate before I set it too cold
Let me know what you think!


luke_l 05-24-2012 02:35 AM

Arduino Kegerator Temperature Controller
 
4 Attachment(s)

So I have been slowly getting into kegging, and recently got a great deal on a small bar fridge, the Danby one which holds 2 cornies. I find that the factory temperature controller (in mine at least) pretty much sucks, and can't hold a constant temperature. I had a glass of water in it, for checking liquid temperature, and it would vary from 5C to frozen, so I had to do something. I decided to build an Arduino one with mostly stuff I had laying around, so it didn't cost me much. If you had to go from scratch, I would say around $20 probably (ebay prices). Basically, I have a temperature probe in the fridge which is a 'onewire' sensor, super easy to work with. The arduino can be set in 0.5 degree increments, and is currently programmed to keep it within 1 degree of that, and it also has a 5 minute compressor cool-down time programmed in. I built a remote "relay box" which also has the guts from a wall wart transformer, which feeds into the circuit board so that I don't need to have 2 things plugged in. Still need to build a box for the circuit board/LCD, but I am trying to decide what I want to do... might dremel out a cutout in the door for it, or in the bump on top near the front (bad for spillage once I install my taps).
I know the temperature is set kinda high, but I just got it going and want to make sure its accurate before I set it too cold
Let me know what you think!


luke_l 05-24-2012 02:35 AM

Arduino Kegerator Temperature Controller
 
4 Attachment(s)

So I have been slowly getting into kegging, and recently got a great deal on a small bar fridge, the Danby one which holds 2 cornies. I find that the factory temperature controller (in mine at least) pretty much sucks, and can't hold a constant temperature. I had a glass of water in it, for checking liquid temperature, and it would vary from 5C to frozen, so I had to do something. I decided to build an Arduino one with mostly stuff I had laying around, so it didn't cost me much. If you had to go from scratch, I would say around $20 probably (ebay prices). Basically, I have a temperature probe in the fridge which is a 'onewire' sensor, super easy to work with. The arduino can be set in 0.5 degree increments, and is currently programmed to keep it within 1 degree of that, and it also has a 5 minute compressor cool-down time programmed in. I built a remote "relay box" which also has the guts from a wall wart transformer, which feeds into the circuit board so that I don't need to have 2 things plugged in. Still need to build a box for the circuit board/LCD, but I am trying to decide what I want to do... might dremel out a cutout in the door for it, or in the bump on top near the front (bad for spillage once I install my taps).
I know the temperature is set kinda high, but I just got it going and want to make sure its accurate before I set it too cold
Let me know what you think!


luke_l 05-24-2012 02:35 AM

Arduino Kegerator Temperature Controller
 
4 Attachment(s)

So I have been slowly getting into kegging, and recently got a great deal on a small bar fridge, the Danby one which holds 2 cornies. I find that the factory temperature controller (in mine at least) pretty much sucks, and can't hold a constant temperature. I had a glass of water in it, for checking liquid temperature, and it would vary from 5C to frozen, so I had to do something. I decided to build an Arduino one with mostly stuff I had laying around, so it didn't cost me much. If you had to go from scratch, I would say around $20 probably (ebay prices). Basically, I have a temperature probe in the fridge which is a 'onewire' sensor, super easy to work with. The arduino can be set in 0.5 degree increments, and is currently programmed to keep it within 1 degree of that, and it also has a 5 minute compressor cool-down time programmed in. I built a remote "relay box" which also has the guts from a wall wart transformer, which feeds into the circuit board so that I don't need to have 2 things plugged in. Still need to build a box for the circuit board/LCD, but I am trying to decide what I want to do... might dremel out a cutout in the door for it, or in the bump on top near the front (bad for spillage once I install my taps).
I know the temperature is set kinda high, but I just got it going and want to make sure its accurate before I set it too cold
Let me know what you think!



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