GRYNX

2nd 2006f February, 2006

DIY POV

by @ 9:28. Filed under News
POV LED Clock For being a beginner in working with clocks I must say that Bob has succeded very well. This is a POV, Persistance of Vision, clock that works like this:

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.

Link: ‘Propeller Clock’ Mechanically Scanned LED Clock

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