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@...)
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
>