Experiment: CPU Hotplate - I have the parts!

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linkin

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Experiment: CPU Hotplate - It Works!

Before i Start i would like to give a special thanks to Buzz1927 who provided the CPU (a pentium 4 3ghz) and the fan grill. Couldn't have done this without you! :good:

Here is where i got the idea and instructions from:

http://www.instructables.com/id/Hot-Plate/

The Parts:

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My Soldering Iron:

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My Oh-So-Wonderful Soldering Job :P :

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The Semi-Finished Product:

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I still have to attach the CPU to the fan grill, otherwise it's almost useless. Also, i have to somehow stop the cable from moving otherwise it might pull off the pins! :eek:

My first experiment will be trying to boil water! (YouTube vid will be embedded into this post when i do it) I think i'll just end up heating it a bit.

And by the way, this does work. i left it plugged in for a few mintues and i've just burnt my finger on it :(

If a mod or admin could change the title to "Experiment: CPU Hotplate - It Works!" it would be greatly appreciated! :)

Here is the youtube vid. i melted an icecube!

[YT]4eZvhtkD-hI[/YT]

More PROOF! here it is running at 51c after ~45 seconds!

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At the moment i'm still trying to find the ground pins. until then i can't do a lot. lol @ keychain idea :P
 
Guess what guys? Success!!!! I'm uploading pics as we speak. I'll need to get a thermometer to validate it, and i may even post a youtube vid of it.

I've not gotten around to attaching the cpu itself to the holder, but i'll do it soon.

I want to see if this can boil water!

EDIT: Updated first post. please re-read it! :D I am also attaching the cpu to the grill as we speak.
 
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hmm I may have to try this, have a couple of spare laptop CPUs with pins, may be interesting to try. Can put my cup of tea on it so it doesn't go cold :P
 
yep. i'd do it with a 478 though seeing as we already know which pins to use. secondly, i broke thw ires by accident :( and my super-awesome soldering means i need to get a new chip. pulled the damn pins off and there's a huge glob of solder on there.
 
Yes, well kinda. i was reading the comments on the instructions and people arguing that it puts out a max of 2.5w of power. obviously it puts out more!
 
how did u figure out the ground and voltage pins? i am trying to do the same thing.

on the instructables page he said he did trial an error. how do u do that?

psd. im new to this electrical engineering and wanted to do a fun project
 
mdang3 said:
how did u figure out the ground and voltage pins? i am trying to do the same thing.

on the instructables page he said he did trial an error. how do u do that?

psd. im new to this electrical engineering and wanted to do a fun project
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find the pinout for the cpu on a spec sheet, that should help
 
If you go to the link in the first post, it will show you the ground and voltage pins for socket 478. i find it easiest to work with... if you never intend to use the cpu for anyhtign else just break some other pins off around the voltage and ground ones so you can solder them better.
 
As in the CPU is a socket 478. it has 478 pins on the bottom and only fits/works in a socket 478 motherboard.
 
I have found the intel pentium m datasheet for the cpu i am using. I am still a bit confused as to how to read the datasheet. I see a lot of power/input pins but which one is the real voltage one? the picture on the instructables site does not help very much.
note
I am using a pentium m processor intel sl89t
 
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