Not my interest, but I learned a little and enjoyed the info. Thanks for 
sharing!

BTW, putting a fingernail to a spinning disk can lead to permanent injury. 
As you approach the upper limit of your life you will wish you had done a 
few less "dumb things"!

John Ferrell    W8CCW

"All that is necessary for the triumph of evil is for good men to do 
nothing." -- Edmund Burke
http://DixieNC.US

----- Original Message ----- 
From: <piclist@ian.org>
To: "Microcontroller discussion list - Public." <piclist@mit.edu>
Sent: Friday, March 28, 2008 9:36 PM
Subject: [OT] Thanks for the motor and programmer help, here is the result.


>I got my hard drive clock project up and running today after some advice
> from you folks.  I took a drive that worked, but had no room and
> re-mounted the moter higher up to get it functioning and all the led's and
> sensor mounted.
>
> I am using a tiny magnet glued to the platter and a hall-effect to time
> the rotation, and tri-color led's are mounted around the edge for
> lighting.  The platter is going to be replaced with a nicer one now that
> I have working hardware.  It's too thin, off center and just plain bad.
>
> The PIC is a 16F88 running with the internal 8MHz clock.  One digital pin
> for the hall effect switch, and three digital outs hooked to darlington
> drivers for the red, green and blue 12v lights.  Code is pretty simple,
> just a single interupt to time the speed of the platter (since it's a hard
> drive I could hard code the speed but I like it this way because you can
> slow it down with a finger and it maintains the image) and then turning
> the leds on and off when needed.
>
> Here are two images, and a video...
>
> http://www.ian.org/HD-Clock/FirstLight.jpg
>
> http://www.ian.org/HD-Clock/NastyPlatterSlice.jpg
>
> http://www.youtube.com/watch?v=dh2ulD3tmDQ
>
> --
> Ian Smith
> -- 
> http://www.piclist.com PIC/SX FAQ & list archive
> View/change your membership options at
> http://mailman.mit.edu/mailman/listinfo/piclist
> 


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