[sdiy] Gorf prototype Video

[David G. Dixon]

Paul,

Very cool little unit!

I must apologize, I haven't been following this thread that closely, but I
have a question:  

Is this thing easily expandable to 16, 24, 32 steps?

David G. Dixon
Professor
Department of Materials Engineering
University of British Columbia
309-6350 Stores Road
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Canada
 
Tel 1-604-822-3679
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> -----Original Message-----
> From: synth-diy-bounces at dropmix.xs4all.nl [mailto:synth-diy-
> bounces at dropmix.xs4all.nl] On Behalf Of Paul Maddox
> Sent: Monday, January 19, 2009 11:26 AM
> To: synth DIY
> Subject: Re: [sdiy] Gorf prototype Video
> 
> Peter,
> 
>   the next rev will have space for a 6mm 10uF cap across the 5V
> supply :-)
> The main reason I didn't was lack of space, but I think I can just
> squeeze one in.
> 
> Paul
> 
> On 19 Jan 2009, at 11:02, Pete Swarbrick wrote:
> 
> >
> > Great stuff Paul,
> > I want one even more than before...
> >
> > FWIW to answer your Q Dave: ALWAYS bypass 3-terminal regs to stop them
> > hooting at HF. I know there are commercial designs that don't
> > bother( or
> > rely on other intrinsic capacitance to nullify the oscillation) but I
> > cant see any reason not to add a few pennies worth of components and
> > save yourself some trouble!
> > Apologies for hijacking the thread, this is just one of my pet hates.
> >
> > Still want one...
> >
> > Pete
> > -----Original Message-----
> > From: synth-diy-bounces at dropmix.xs4all.nl
> > [mailto:synth-diy-bounces at dropmix.xs4all.nl] On Behalf Of Dave Manley
> > Sent: 19 January 2009 02:22
> > Cc: Synth DIY
> > Subject: Re: [sdiy] Gorf prototype Video
> >
> > Paul Maddox wrote:
> >> Ladies and Gents,
> >>
> >> Video of the new GorF PCB, and I'm doing a bit of talking explaining
> >> all about it at aswell.
> > Hi Paul,
> >
> > Very cool project.  I took a glance at the schematics
> > (http://www.vacoloco.net/synths/gorf/files/GorF_Schematic.pdf).  Once
> > again I admire the clarity and simplicity of the design. I had a
> > couple
> > of  questions, 1) is there any need for input/output capacators on the
> > 7805, 2) does the AVR need any kind of power on reset?
> >
> > -Dave
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