[microsound] Creating video with a circuit bent Casio Sk-1

[David Powers <cyborgk@xxxxxxxxx>]

http://www.getlofi.com/?p=684

The circuit is simply a diode to prevent the back flow of current and
a resistor to drop the +5 Volt logic gate to a +1 Volt required for
generating a video signal. The color of the pixel is determined by the
voltage in between 0 ( Black ) and 1 ( White ), so if multiple points
on the ROM chip were mixed with various resistor values color images
will occur. Gijs' result is a series of lines that appear on a monitor
in a scrolling fashion. The resulting image is neat and in sync with
the sounds generated, however it is out of sync with the screen. The
NTSC and PAL video standards require a sync pulse to be sent every so
often, without it the image will scroll. Very nice work and I am sure
that this technique will work with other circuit bent devices.

http://www.youtube.com/watch?v=JU_SB88RXTw

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