Step 4: Hard Drive
1. Make it into a clock-
Yes the disc out of a hard drive actually makes a pretty good clock and it looks cool.
See HERE
Or if you think your really good, try this one!
See HERE (If you dare)
2. Use it as a fake
Now you can impress your mates with your USB hard drive thats actually made out of memory sticks.
See HERE
3.Turn it into a rotary input device-
Thats basically a wheel that you turn that controls your computer
See HERE
4. Make a tesla turbine
A tesa turbine is a thing that converts air and water motion into eletricty.
See HERE
5.Make a really strong fridge magnet
In hard drives there are super strong magnets...These make great fridge magnets!
See HERE
6.Make it into a safe
This ones pretty simple; gut a hard drive and store stuff inside it
See HERE
7.Simply Use It as a Coaster
Self-explanatory. But the only thing I would say is that if you have a USB cup warmer you could take the heating plate out of it so it would keep your drink warm!
See HERE
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because the washers are a snug but flexible fit, and because they are deeper than the disk thickness, you can fine tune the disk tilt . Hence you can focus in a set of platters to concentrate their reflection at one point. You can also unclip the platters for cleaning
I do not know how practcal that would be; you'd be building a state machine anyway I'd think. http://en.wikipedia.org/wiki/AT_Attachment has pointers to the documents. ATA is simple, but what about error recovery etc?