Stay Warm This Winter: CPU Hand Warmer

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Intro: Stay Warm This Winter: CPU Hand Warmer

In this small project I will show you how I repurposed an old AMD CPU to create a small, light and easy to use electric hand warmer. With the help of a small portable power bank this gadget can warm you up for around 2 and a half hours and can easily reach temperatures up to 60 degrees celcius.

Step 1: Watch the Video!

The video gives you all the info you need to build this thing. But I will also give you a few advises during the next steps.

Step 2: Get Your Parts!

Here you can find all the parts I used during this build except the CPU. But you can find an old one very easily and cheap on Ebay.

Ebay:

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

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

1x 10k Resistor:http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x 5V Power Bank:http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x USB Cable:http://rover.ebay.com/rover/1/711-53200-19255-0/1?...


Amazon.de:

1x Arduino Nano:http://amzn.to/1CJS3AD

1x DS18B20 Thermal Probe:http://amzn.to/1ClWPWO

1x 10k Resistor:http://amzn.to/1ClWWl6

1x 5V Power Bank:http://amzn.to/1ClWXpj

1x USB Cable:http://amzn.to/1ClX2Jv


Amazon.com:

1x Arduino Nano:http://amzn.to/1AYS9C9

1x DS18B20 Thermal Probe:http://amzn.to/1EBpR4r

1x 10k Resistor:http://amzn.to/1yYbFUc

1x 5V Power Bank:http://amzn.to/1zDbBcg

1x USB Cable:http://amzn.to/1EBq3jW

Step 3: Download the Code for the Thermometer!

Here you can find the sketch for the thermometer that I used during the video.

Don't forget to download the necessary libraries:

https://github.com/milesburton/Arduino-Temperature...

http://playground.arduino.cc/Learning/OneWire

How to connect the DS18B20 to the Arduino Nano?:

RED --> 5V

BLACK --> GND

WHITE --> D3 (digital Pin 3)

Don't forget to put a 10k pull up resistor between D3 and 5V.

Step 4: Success!

Now you know how to build a small CPU hand warmer. But don't try to use it to keep your beverages warm. That will not work!

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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41 Discussions

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SCStm

1 year ago

what is this? how can ı find? can you send me this object's link?

Capture.PNG
1 reply
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SCStmSCStm

Reply 1 year ago

I found it. its name its name is breadboard

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Macinyash

1 year ago

I have the same CPU as the video. Would you be willing to tell me which pins to connect the wires to. Thanks

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종훈이

1 year ago

So neat.! This guy has innovative thinking on his brain!

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Yonatan24

2 years ago

Why did you secure the wires with hot glue? This heats up...

Why didn't you use a resistor instead of the CPU, Resistors are 100% efficiency...

1 reply
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AndrewS435Yonatan24

Reply 1 year ago

I used epoxy on mine and it worked great, plus it looks more smooth

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AndrewS435

1 year ago

Great project scott, only one issue i seem to find is that my cpu handwarmer sometimes dosent work, sometimes does! I've tried it in plugs and portable chargers and only sometimes it just dosent heat up at all, any ideas why?

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Green gadgets

1 year ago

This way better than the other one I saw where yu get a wire and solder if to a 9volt battery.

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ahmedsidd

2 years ago

what if I do not have an variable bench power supply? How should I measure the current draw

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AhmedA352ahmedsidd

Reply 2 years ago

Use a 5v power supply and measure the current with a multi-meter .

watch his tutorial about it here: https://www.youtube.com/watch?v=CBah3vz5b-U

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Yonatan24PowellMade

Reply 2 years ago

Why not? It should work if the solar panel can supply enough current

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gluvit

3 years ago

Nice

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throbscottle

3 years ago on Introduction

Neat! You found a flat heating element that would otherwise be junk. I think the flatness is important - not like a resistor... Good work :)

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jueljp

3 years ago on Introduction

brilliant, now I know what to do with a bunch of old Intel processors

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boocat

3 years ago on Introduction

I really like this, never thought about it before. Now I'm going through all my tubs of bits and bobs! Thanks.