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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.
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.
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Signing UpStep 1Tools 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.
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Lets get these things straight.
First, a CPUs SAFE temperature range is, depending of the CPU, between 30 and 55.
The MAXIMUM temperature (exceeding this usually means the computer shuts down forcefully) is between 60 and 100, depending of the CPU.
You do not, under any circumstances, want to run your CPU at those temperatures, as they will get damaged over time.
Source : http://www.pantherproducts.co.uk/Articles/CPU/CPU%20Temperatures.shtml
Second, the voltages of CPUs vary, a lot.
Old Pentium 1 runs at 5v. my Core 2 Duo runs between 0.85 and 1.5 volts.
So, if you use an old pentium 1 processor, it will work perfectly.
Stick a C2D, and it will fry and you will get very nasty smoke.
Source : http://en.wikipedia.org/wiki/List_of_Intel_Core_2_microprocessors
Third, for this project, the USB port will give 5volts at 100mA, as that is the maximum power for a single device.
A smart device, like an external HDD, can REQUEST the computer to give it more power, by asking to take additional places in the USB bus, to the max of 5 devices, or 500mA.
Source : http://en.wikipedia.org/wiki/Universal_Serial_Bus#Power
Fourth, power is always proportional to voltage and current.
At 5v and 100mA, power is 0.5 watts.
A CPU can use over 130watts in normal use, so you will not be getting the +100c temperatures here because of how the heat is released normally.
It is because the transistors and such act as resistors, resisting the 0.5watt power and turning it to (some) heat.
Source(s) : http://en.wikipedia.org/wiki/Watt%27s_law and http://en.wikipedia.org/wiki/List_of_CPU_power_dissipation
Unless you use an older CPU that can handle the 5volts, you will fry your CPU.
So try to find a Pentium 1 or such, do not try this with a C2D :)
and dont go so nerd rage ((:D)
I first remember seeing this hack years ago with old amd and p1'schips.
http://liveweb.archive.org/http://rabidhardware.net/id=44
http://www.bit-tech.net/news/modding/2006/09/18/usb_hotplate_cooks_dinner/1
Could not find the oldest article.
http://www.intel.com/support/processors/pentium4/sb/CS-029963.htm
i used two CPU-s in collateral contact, and cellphone charger for the power. It's working! She loves it. THX! :)
can i use an old CPU, like 368 one or 486
So I followed this one but used a dodgy phenom which always run hot :D
Cool instructible