| previous by date | index | next by date |
| previous in topic | topic list |
I finally got some more time to spend with the poly-800. It seems
that the 0 to 5v on 1-4B and 1-5B with 10K linear pots does actually
work and provide what seems to be the full range on both axes of the
stick.
I know absolutely for sure the first time I tried this it wasn't
working correctly. I think perhaps my unit got itself into a bad
state, or maybe I missed putting a couple of parameters back into
their valid ranges, or maybe my unit is generally flakey. I took
the battery out, unplugged it, turned it off, gave everything a good
clean, let it sit for a while, then put everything back together,
reset all the parameter ranges to their valid values and the joystick
knobs seem to be functioning more or less correctly.
Thanks for you help you guys...
-Tim
--- In korgpolyex@yahoogro ups.com, "Gordon J. C. Pearce MM3YEQ"
<gordon@...> wrote:
>to +5
> On Thu, 2009-02-19 at 05:20 -0800, Michael Hawkins wrote:
>
> > So my idea was to patch two -5 thru +5 voltages directly onto the
> > demultiplexer inputs thus bypassing all of that. And I chose -5
> > because it wouldn't hurt to have the range go negative but Ibelieve
> > that 0V thru 5V should do it.about
> >
> > And I am very disappointed that it didn't work.
> >
> > If I were you, I would try to find a replacement joystick unit.
> >
> > The range of the joystick with the bend depth pot set to max is
> > 7 semitones (or half an octave up or down).do
> >
> > I still think that a range of 0V to +5V on those two pins should
> > the job. I am rather mystified as to why that wouldn't work.
>
> I've actually measured it on my Poly-800, and it swings from 0 to 4
> volts, not 5 volts. The opamp keeps the pitch bend voltage centred
> around 2v (so that at half-scale it would go from 1 to 3 volts).
>
> HTH,
> Gordon
>