On Mon, 6 Feb 2006, James Newtons Massmind wrote:

> Most funny! Thanks for sharing. But really, a circuit like that hooked up to
> a serial port with the clock derived from a one-shot...

How about two phototransistors suction cupped to the monitor screen and 
a Javascript program to flash two rectangles in the right seuqence ? 
Galvanic insulation for free. Works with a Mac! Heck, it even works with 
a TV and a VCR ;-)

Peter
-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist