audio oscilliscope

I have a small LCD screen in my car that isnt connected to anything right now. I'd like to make a simple oscilliscope that will respond to an audio signal input.

The LCD screen has one of those round stereo connectors, (cant remeber what the correct name is right now).
I'd also like to be able to adjust the gain input so that I can vary the size of the peaks.

How would I go about doing this?

You should have searched google before posting, but i did it for you:
**broken link removed**
http://members.tripod.com/michaelgellis/scope.html
http://fileshare.eshop.bg/index.php?what=search2&searchstring=C1-83
**broken link removed**

-MATT-

Thanks matt, but I'm using a LCD screen, which doesnt have a CRT that I can hack into.

I think I remember something about a "picoscope", but from my inital searching on this, I think it is only for PC.

you mean an RCA connector, i believe...

you'd need an oscilloscope that outputs NTSC composite signals (for hooking up to a television)

I've never heard of a television oscilloscope before... you could probably make one, perhaps even with a PIC (there are various projects out there involving TV output with a PIC) but it would be a rather difficult undertaking... hope you are okay with a lot of work :wink: