Cgs synth

Hi,

I've posted the circuit diagrammes for the sequencer. Please excuse
the My First Circuit by Jonny aged 8 look. I've missed out some of
the circuit that doesn't affect the main body for clarity. It can be
found in Files/Programmer

Yours Aye

Stuadh

--- In cgs_synth@yahoogroups.com, "stuadh" <stuadh@...> wrote:
>
> Hi,
>
> Very kind of you to help.
>
> I'm using a Doepfer Sequential Switch that I had a spare board from.
> It runs from the 4 Rows and can really be considered as separate to
> the Sequencer (even though it is on the same panel).
>
> For the 16 steps, I just wired up 16 boards. Why do anything by
> (literally) halves?
>
> I'l check the output of the TL072s (driving the pots) at the weekend
> when I have some time. I'll also try and get my circuit diagramme
> online although it will prabobly be hand-drawn; I've had no luck with
> the circuit editor programmes I've tried.
>
> Once again,
>
> Thanks you,
>
> Stuadh
>
> (happy to private if you wish stuadh@...)
>
> --- In cgs_synth@yahoogroups.com, "bbluthang" <jumpswine@> wrote:
> >
> > Hi
> > I am willing to help but am unsure of your project
> > Are you combining a Sequential Switch with a Seq/Programmer?
> > >
> > > I've checked that I'm putting +15V, 0V and -15V (actually +14.8V
> > > and -15.2V...is this significant?
> >
> > shouldn't matter
> >
> > On reflection, this is probable cause by the LED
> > > running to GND through the trigger switches, and I probably need to
> > > wire it to GND via a resistor (prob 1K5).
> >
> > Leds always need a resistor to limit the current thru them, mainly for
> > their own self protection, the resistor can go between power( for +V)
> > and anode or ground and cathode, you only need one but it must be
there.
> >
> >
> > > the 1st and 16th steps, the idea being that I could reset to these
> > > steps at the touch of a button. None of these buttons work.
> > >
> >
> > What have you done to get a 16 step sequencer using Ken's boards? Not
> > that it is difficult or wrong, just non-standard.
> >
> >
> > > Also of significance is that there is the same output from
each Row,
> > > but that this is not affected by moving any of the knobs. This is
> > > about 50mV.
> >
> > this is basically 0 - nothing is coming in. have you checked the
> > outputs of whatever is driving the pots?
> > >
> > >
> > >
> > > I know it is a bit of a black art trying to diagnose these things in
> > > person, much less by remote but I'd really appreciate some help,
here
> >
> > if you could draw up a schematic of your mods, by hand is ok, it would
> > help a lot. post it in files
> > cheers
> > Andrew
> >
>