Moe -
The AUX can be the Gate Out of course, but I must have one input &
output for note quantization :)
There must be some way to take ∗one∗ PSIM output and turn that into
addresses 0~15.
On the MiniWave, the Wave Selection input voltage is somehow converted
into binary, which then lights up the 4 leds; that's what I'm thinking
about. So 0~0.5v = 0000, 0.6~1.0v=0001, 1.1v~1.5v=0010, etc. The
PSIM program could specify the sequencer step 1~16 by outputting =
0.25v∗requiredstepnumber.
I don't yet understand how 16 skip switches can all communicate with the
PSIM. If there is a way to do that using just one PSIM input? With
another multiplexer you could scan across all the switches between
steps, but I don't think the DAC could be scanned 16 times and still be
fast enough at even moderate tempos. (?)
I guess you could (assuming the switches were multiplexed)
#1) choose which step to go to next
#2) look at the status of that switch's SKIP switch
#3) if SKIP=on then go back to step #1
#4) go ahead and fire up that step
But this could result in noticable delays if several SKIPs were ON.
If you dedicated two PSIM inputs to 16 on/off switches, you'd have 20
bits to work with, yes? Would that make it possible?
I feel like the greatest hardware step sequencer is just a couple minor
problems away...
Andrew
>>> "Dave Bradley" <mate.stubb@...> 12/18/06 12:22 PM >>>
Andrew,
If the 4 psim outputs were set up to be a binary address, you could have
complete specification of any arbitrary number between 0 and 15.
Then set up two inputs as you described, one for control of clock pulse
advancement for rhythm, and one for control of direction/next stage
select
mode.
Set up a third input as a skip input.
Aux would be an output that fires a pulse every time the state changes
for
envelopes. The width could be controlled up to 100% by the 4th input.
Now you need a pot matrix with binary inputs, kind of like what I was
trying
to do with SuperMoe:
http://www.hotrodmotm.com/images/CV_Generator_8x4new.jpgThis module can do 8x4 steps, 16x2 steps, or 32x1 steps. Since you only
have
4 psim outputs for address, you could do 2 rows of 16 steps worth of
control, randomly accessible from the psim.
Moe
On 12/18/06, Andrew Scheidler <xpandrew@...> wrote:
>
> Dave -
>
> Can the existing PSIM-1 have four more inputs added? Outputs too?
>
> Are there schematics or instructions for this somewhere? I have a
> soldering station and I'm not afraid to use it :)
>
> Andrew
>
> >>> "djbrow54" <davebr@...> 12/16/06 11:50 AM >>>
> It's been designed so the 8 analog inputs can be multiplexed (with no
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
--
Dave Bradley
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