[sdiy] OT:? Lissajous

[KA4HJH]

>> I just got a scope and am currently fascinated by lissajous
>> figures. At the moment my Arp 2600 is going into the scope and
>> making some great patterns. Does anyone know if there is a way to
>> get a video/TV signal out from the scope?

At low frequencies a camcorder will at least give you a watchable picture.
Take a look at this:

http://www.crowncity.net/ratcave/Electro/ScopeArt/ScopeArt.html

If nothing else the design of the circuit should intrigue you. If you
already have two balanced modulators it would be relatively easy to patch
this up.


>Film it with a video camera (ha, ha), expect lots of visible
>frequency aliasing.

Temporal aliasing is always a snag. Then there's the variable slew rate
which changes the brightness...

-- 

Terry Bowman, KA4HJH
"The Mac Doctor"