RE: [stella] Programming Contest?

["Gonzalo Fernández" <horcas@xxxxxxxxxxxxxxxxxx>]

> discs inside it which will generate a 4-bit sequence (quadrature output, 
I 
> think it's called). By looking at the sequence, one can determine which 
> direction the device is turning. Looking at the schematic, only 2 of 
those 
> pins are used to generate the sequence..

http://es.geocities.com/gamemasterquilpue/indy500hack.htm

This guy made his own Indy controller using two little optical devices (how 
are they called?) that can generate the Gray code. It is a curious design.

Gonzalo.


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