Hot Plate





Introduction: Hot Plate

Dead Computer Contest

Finalist in the
Dead Computer Contest

This is a very easy and cool project to do with a dead CPU.

A CPU is a very beautiful piece of a computer that you won’t through away even if it was dead. Among many other things, simply, you can drill a hole in it and use it as your key chain.

This project will show you how to make a hot plate for your Mug from a dead CPU.

Step 1: Tools and Materials

1. A dead CPU.

(Ofcourse you can use a working one but it won’t be feasible.)

2. A USB cable

3. A Fan grill with screws.

4. Any box (I used a wooden tie box cover)

5. A rotary Tool (the best tool ever invented)

6. Epoxy

7. A creative artistic mind.


Step 2: The Idea

A CPU will still have some working electronic circuits even if it stopped functioning probably. And this project will use the heat generated by running some Volts in the CPU through a USB cable.

 First things first.

Be Very Careful.

Connecting a malfunctioning CPU to your computer may and will damage your computer’s ports or even worse. If you don’t have enough knowledge and experience in electronics... don’t do it.



Step 3: The Steps

First, prepare the base.

You have to find a thin box or a box cover to use as the base of the plate. I used a tie box cover made of wood because it has the same thickness as my laptop.

Now put the CPU over the base you picked and mark a square to drill with your rotary device. The square must be a little bit bigger than the CPU. The reason behind the bigger hole is to make sure the hot CPU won’t touch the wooden surface of the base. It’s not going to put it into flames, but it will produce a nasty burning smell.

Then, using the fan grill as your ruler, drill four holes in the body of the base and Screw the grill down to it.

Make another hole on one side of the base. That’s where the USB wire is going through.


Step 4: Preparing the Hot Plate

locate the ground pins in your CPU and that can be done by reviewing the CPU data sheet or simply by the devastating trial and error.

Cut the USB wire and pass it through the hole you made previously in the base.

Strip the USB cable and locate the black and red weirs (black wire = ground, Red wire = +5V). You can cut out the white and green data weirs for more space.

Now connect the black wire to the ground pins and the red wire to voltage pins.

The best way to attach the weirs to the pins of the CPU is to cut the wires without striping them and then slide the pins inside.

Finally, you have to attach the CPU to the grill by Epoxy



2 People Made This Project!


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I have a intel pentium 3 processor...
can I do with it? and what should be used as heat plate?

please tell me the pins to connect on my intel p4 478 pins

please tell me the pins to connect on my intel p4 478 pins

This thing WORKS! cool! thanks for the Instructable.

Hi guys. i have been trying this for some time now and cant get anything to heat up.

i am using a intel pentium 4 2.8ghz. could someone point out the +ve pins and the -ve pins for me?

how long should it make to heat up?

Anyone can help me find the voltage and ground pin for intel Celeron 326

work good at 10v 1A :D hehehehe it s hot

0.o How did you get 10v 1a from a standard USB port?

I think he means he hooked it to a different power supply. That would blow that processor pretty quick, i'd think.