Several years ago we built a dual channel "O'SCOPE 1" based on a PIC16C73
with an Optrex DMF697 display.  Because of all the range switches it was a
nightmare to wire and expensive to build.  It would just barely cover audio
frequencies.
We abandoned the project when we found a $200 handheld 'scope sold by Tech
America;
it was cheaper and more capable.
Tom Fisher
Inexpensive Systems


> ----------
> From:         hue[SMTP:wkenned2@ROCHESTER.RR.COM]
> Reply To:     pic microcontroller discussion list
> Sent:         Saturday, June 19, 1999 7:27 AM
> To:   PICLIST@MITVMA.MIT.EDU
> Subject:      pic o-scope
>
> Anybody ever build a stand-alone mini-scope that would capture and display
> a
> cycle or two of a known (approximately) waveform, perhaps for inspection
> purposes?  What I propose is a pic-based system (a-d, pic, ram, lcd
> display)
> that would be capable of storing x number of data points and then display
> them on a screen (maybe even a programmable calculator screen?).  This
> system would be used for q-c'ing a mechanical device that should output an
> almost perfect sine wave, but would be distorted enough if it wasn't
> working
> properly to show up, even with a low number of acquisition points.  I'm
> looking for any info anyone would like to share, including pointers to
> products that may already exist for this purpose, otherwise, it might be a
> blast to put one together.  Any ideas on how to interface all the
> components, which a-d to use, etc. would be much appreciated.
> Bill Kennedy
> KC2BEN
>