On 2011-02-23 13:16, Olin Lathrop wrote:
> This brings up a idea I've had in the back of my mind for a few years.
>
>
> Instead of a monitor, it would have a SVGA output.  Everybody has a old S=
VGA
> monitor or two lying around unused nowadays.  These cheaply give you way

These guys did a bit of hacking inside the monitor to allow it to serve=20
as an analog waveform (not raster) scope. They are driving VSYNC with a=20
computer, but a PIC timer would likely work great while providing an=20
adjustable timebase.   Perhaps omitting the sample storage is a pro or a=20
con, depending on if you want simplicity vs DSO features.

    =20
http://www.instructables.com/id/Make-an-oscilloscope-out-of-an-old-Crt-comp=
uter-mo/

I know real scope CRTs use electrostatic deflection, probably to avoid=20
the inductance of deflection coils.  So who knows how well it would work=20
at higher signal frequencies.

Joe

--=20
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.