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Cgs synth

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Message

Re: Programmer/Sequencer project

2007-01-11 by sasami@hotkey.net.au

Programmer:

>1. I'm not sure I understand how to limit the number of steps in the
>sequence and what exactly the Ext Pulse does. For example, if you
>want to run from steps 3 through to 7, would you patch the pulse of
>step 7 to the Ext pulse of step 3?

You would patch the pulse of step 8 (not 7) to Ext pulse of step 3. When
step 8 is activated, it immediately activates step 3, cancelling itself in
the process.

>2. With respect to the push buttons, do these act as a "reset to this
>step" button?

Exactly.


>3. Would wiring a debounced, push-button from the +15V to the up (or
>down) input (as suggested in an earlier post) act as a one step advance?

Yes.

>4. On the A boards, pulse out circuit, could all stages be wired
>through switches to a single LED, 820R, pulse-out and 680R? The
>reasoning behind this is to replicate more conventional sequencers
>where each row of switches goes to a single indicating LED and socket.
> And then add four rows of switches.

You would want to add a 1N4148 diode into the circuit per stage, exactly
where the LED is shown, then go to your switch etc.

>5. What voltages do the pots put out (at 12V if anyone knows,
>otherwise, at 15V)?

The total is adjustable by tweaking the values of the resistors in the CV
buffers

>6. What voltage do the stage pulse outs, the CPO and AEP produce? Do
>the stages produce a trigger or gate?

5- 6 volts approx. Pulse Outs are GATE. CPO/AEP triggers. There may be a
fault with one of these I haven't investigated yet. I've heard of some CPOs
apparently not working - it may just be user error.

Ken
_______________________________________________________________________
Ken Stone sasami@...
Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>

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