DIY HACK – “Propeller Clock” Mechanically Scanned LED Clock

http://zedomax.com/image/200612/cool-pov.jpg

Cool propeller clock you can make!

How this clock works:
A motor spins the “propeller”, and a small microprocessor keeps track of time and changes the pattern on seven LEDs with exact timing to simulate a 7 by 30 array of LEDs. It is an illusion, but it works nicely.

If you want to build this clock, you will need a few things, including:
Skill with motors and mechanical things.
Prior electronic experience.
A dead VCR or floppy drive or other source of a suitable motor and miscellaneous parts.
A programmer that will program a PIC16C84 or 16F84 microprocessor.

via digg

2 Responses to DIY HACK – “Propeller Clock” Mechanically Scanned LED Clock

  1. Izl says:

    nice but one little speed error would throw it off

  2. girrrrrrr2 says:

    no it would work the same but these would be farther apart or closer together…

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