DIY Cooler

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Introduction: DIY Cooler

Wouldn't it be nice to have a cold beverage right next to you? In this project I will show you how to achieve this luxury by building a homemade cooler which decreases the temperature of your beverages down to 8 degree Celsius. Let's get started!

Step 1: Watch the Videos!

The two videos give you all the information you need to build something similar. For further reference see the following steps.

Step 2: Buy Your Parts!

Here is a list which contains the most important electronic parts for this build:

Amazon.com:
1x Arduino Nano: http://amzn.to/1M6B3we

1x 2 Channel Relay Board: http://amzn.to/1MU2FTD

1x DS18B20: http://amzn.to/1MU2FTD

2x TEC1-12706 Peltier Modules: http://amzn.to/1MU2FTD

2x CPU Heatsinks: http://amzn.to/1MU2FTD

Amazon.de:

1x Arduino Nano: http://amzn.to/1VAMOeT

1x 2 Channel Relay Board: http://amzn.to/1VAMOeT

1x DS18B20: http://amzn.to/1VAMOeT

2x TEC1-12706 Peltier Modules: http://amzn.to/1VAMOeT

2x CPU Heatsinks: http://amzn.to/1VAMOeT

Ebay:

1x Arduino Nano: http://rover.ebay.com/rover/1/711-53200-19255-0/1...

1x 2 Channel Relay Board: http://rover.ebay.com/rover/1/711-53200-19255-0/1...

1x DS18B20: http://rover.ebay.com/rover/1/711-53200-19255-0/1...

2x TEC1-12706 Peltier Modules: http://rover.ebay.com/rover/1/711-53200-19255-0/1...

2x CPU Heatsinks: http://rover.ebay.com/rover/1/711-53200-19255-0/1...

Aliexpress:

1x Arduino Nano: http://s.click.aliexpress.com/e/QBqzZvFEQ

1x 2 Channel Relay Board: http://s.click.aliexpress.com/e/7EuRJei6u

1x DS18B20: http://s.click.aliexpress.com/e/nAI6IImiu

2x TEC1-12706 Peltier Modules: http://s.click.aliexpress.com/e/qjYfQvr3B

2x CPU Heatsinks: http://s.click.aliexpress.com/e/Ur7EUj2Bm

Everything else (MDF, Styrofoam, brackets, hinges, bolts & nuts,.....) can be found in your next home improvement store.

Step 3: Build the Case!

Here you can find the measurement for my three layer case design. Feel free to build your own like this or get creative and change it in one way or another.

Step 4: Wire Up the Electronics!

Here you can download my Arduino Code and the schematic that I created during this project. If you build everything like it is described then there shouldn't occur any problem.

Step 5: Success!

You did it. You successfully built your own cooler.
Feel free to check out my YouTube channel for more awesome projects:

http://www.youtube.com/user/greatscottlab

You can also follow me on Facebook, Twitter and Google+ for news about upcoming projects and behind the scenes information:

https://twitter.com/GreatScottLab

https://www.facebook.com/greatscottlab

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39 Comments

Hi scott I have problem
I think that you controlling two coolers with Arduino and relay by on & off but not fans. Why is that? Is there any reason to switch on fans all the time? or is it ok to make it off with the cooler?

Hi scott I have problem

Arduino code is broken. This Error log

C:\Users\I'mUserC:\Users\Koudysik\Downloads\Cooler_Sketch\Cooler_Sketch.ino:1:21: fatal error: OneWire.h: No such file or directory

#include <OneWire.h>

^

compilation terminated.

exit status 1

Error compiling for board Arduino Nano.

Be sure to install the necessary libraries, otherwise the code wont compile. just search OneWire and DallasTemperature in the Manage Libraries panel in the Arduino IDE, and install them from there. I had a similar issue, only to realize that the libraries aren't installed by default.

New Arduino: 1.6.12 (Windows 10), Board: "Arduino Nano, ATmega168"

lto1.exe: internal compiler error: resolution sub id 0xde907f8f not in object file

libbacktrace could not find executable to open

Please submit a full bug report,

with preprocessed source if appropriate.

See <http://gcc.gnu.org/bugs.html> for instructions.

lto-wrapper: C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc returned 1 exit status

c:/program files (x86)/arduino/hardware/tools/avr/bin/../lib/gcc/avr/4.9.2/../../../../avr/bin/ld.exe: lto-wrapper failed

collect2.exe: error: ld returned 1 exit status

exit status 1

Error compiling for board Arduino Nano.

Invalid library found in C:\Users\\Documents\Arduino\libraries\examples: C:\Users\\Documents\Arduino\libraries\examples

Invalid library found in C:\Users\\Documents\Arduino\libraries\examples: C:\Users\Documents\Arduino\libraries\examples

This report would have more information with

"Show verbose output during compilation"

option enabled in File -> Preferences.

Welcome. But what aboat with source of dc? How to use how much AMPERS?

cool project:
I am surprised that it takes so long to cool your device, so a couple of quick suggestions/questions.

Surely it makes sense to make the fridge top opening as cold air falls and you can best guarantee the seals of the non-opening faces and joint (basic chest freezer principle). It would also surely make sense then to place the peltier system in the opening door at the top, as hot air rises and cold air falls. I would also presume it make sense to paint the alluminium plate on the inside of the fridge black and or have a larger surface area so that it can absorb more heat from inside the fridge more quickly. Also using extruded polystyrene foam as used on construction sites to insulate floors would be more effective then standard ball foam, Often easy to get from a construction site as they throw away off cuts.

Final comment is that the real inefficiency of this must surely be the aluminium spacer blocks reducing the heat transfer to the inside of the fridge and the small air holes through the foam reducing the air flow over the heatsink at the back. Understandably these are needed because of the thinness of the Peltier plate and the thickness of the foam insulation. So why not use a water cooling block and small induction pump to move the heat through pipes, may be much more efficient. Just a thought, love to know your response

cool project:
I am surprised that it takes so long to cool your device, so a couple of quick suggestions/questions.

Surely it makes sense to make the fridge top opening as cold air falls and you can best guarantee the seals of the non-opening faces and joint (basic chest freezer principle). It would also surely make sense then to place the peltier system in the opening door at the top, as hot air rises and cold air falls. I would also presume it make sense to paint the alluminium plate on the inside of the fridge black and or have a larger surface area so that it can absorb more heat from inside the fridge more quickly. Also using extruded polystyrene foam as used on construction sites to insulate floors would be more effective then standard ball foam, Often easy to get from a construction site as they throw away off cuts.

Final comment is that the real inefficiency of this must surely be the aluminium spacer blocks reducing the heat transfer to the inside of the fridge and the small air holes through the foam reducing the air flow over the heatsink at the back. Understandably these are needed because of the thinness of the Peltier plate and the thickness of the foam insulation. So why not use a water cooling block and small induction pump to move the heat through pipes, may be much more efficient. Just a thought, love to know your response

if i dont use the 4.7 k resistor and use a 0.12k resistor what will hapend?

I find it hard to believe 2 peltiers will cool down to -8 C....really?