> ----- Original Message -----
> From: <bigd@...>
> ...... the obvious? Of course Im gonna use this to
lazily tune by 2 30's
,
> but any have any other ideas for creatively using
the 822 elsewhere?
> Jim
--------
I am getting almost none of the list mail due to
e-mail server trouble.
But, this came through today. Other uses for the 822?
Here they are:
Anytime you want to offset any DC or very low freqency
AC (the 1013 chip is
great for DC but will not do well for AC except for
low frequencies I
learned from Paul) Why would you want to do that?
Well, you can take AC
pulse waves out ouf your 320 or 120 and bais them to
one side of zero so
that they are 0 to x volt DC pulses instead of AC.
Maybe something you have
that likes a clock / sync input will like this more.
Same is true for some
resets. The blacet FD reset takes about +8 volt DC.
Bias your 5 V p-p AC
and you have 0 to 10 VDC. Just remember that your 822
biases in 0.083 volt
steps on the step switch and 1.0 volt steps on the
octave switch. So, the
maximum offset per channel is 3.91 volts. But, you
can run channels in
series. Hmmm..
Let's not overlook the obvious -- on-the-fly
transpose. You got that great
piece that has a key change square in the middle and
goes from a user
friendly key of G to the aweful Gflat. Have one
channel of the 822 drive
ALL osicllators, reach up and click.... new key. You
are still playing in
G. That's almost like a digital cheat, and faster
than any MIDI-2-CV menu
change.
Just a note on 822 / 831 use. The ideal way to use
these is to keep them
hooked in line to your oscillators all the time. Take
your CV in to the
Input of the 822 or 831 and put an oscillator on each
output. With all of
your shift knobs on the "0" or no-shift position, hit
a key in the higher (2
octaves above middle C maybe) range of your keyboard,
and use that to zero
beat all your oscillators. Now, you are ready to
select any tuning
interval you like between oscillators. I have found
that I am selecting
tuning intervals I woud never have manually dialed in
and used. I am
enjoying that.
Now, lets talk about modifications / additions to the
circuit.
1. FM input - easy You might appreciate this when we
see the Micro 310 VCO.
2. Alternate tunings. Well sort of. The circuit is
designed to be VERY
linear. However. it could easily be changed to be
interntionally stretched
or squashed to povide 5, or 7, or 17, or ?? keyboard
notes in an actual
octave range. The limitation is that it absolutely
must be equally spaced
tunings. That may be boring to some. For me, I have
enough trouble with
one tuning that I have no plans to mess with trying to
play alternate
tunings.
3. Continuos bias control (instead of step) for those
applications outside
of VCO use.
I would love to hear ideas for creative uses DC offset
/ summing. I could
do a very small little daughbter board based around
those ideas as an add on
to the 822 or 831.
-----------
> CHRIS PARKER wrote:
> Since the list is a little slow this morning, and
since I just recieved my
> brackets order, I thought I'd take the time to
publicly thank Stooge
Larry,
> Stooge Moe, and everyone else involved for their
efforts. The creativity
> exibited by the members of this list never ceases to
amaze me!
-------
Thanks Chris. The metal bracket was a lot of work
getting all of the
tolerances just right to fit those rotary switch locks
and yet be universal
enough for use with anything. The long ones will be
great for those bigger
boards like the Time Machine and others.
------
> Larry...your Voltage Shifter modules are tops! I
can already see how
> they will become some of the most useful modules in
my system.
> Thanks for going to all the trouble of
designing/debugging these circuits
> for us "less-gifted" folks...
-------
Thanks. This started because I wanted an octave
switch for my VCOs. I was
really going to do some kind of simple thing that
produced DC voltage and
hooked to the 300 VCO FM Input to bias is in octaves,
or "maybe" 5ths. Ken
Tkacs rode me like a dog because he thought it should
be "more" and
"better." So, his inspriration and idea thought chain
is a major reason
this ever happened. And, my abilities here are VERY
limited. I could not
have done any of it without Paul's help. He has shown
us all what the
standard of excellence should be and how to "do it
right." And, he must
have answered 1000 stupid questions for me in the last
3 years.
-----
> and thanks also for having the circuit boards and
brackets fabricated.
-----
Someone else is due the "thanks" for the PCBs. I hope
he reads this. The
brackets were a learning experience. All the research
has filled up my
contact list with metal shops and such. And,
(shusssh) I made a little
money on those brackets.
-----
> Dave...your front panels can't be beat! It is
really nice to be able to
> integrate other non-MOTM modules seamlessly into my
system.
> I realize that taking the time to get all those
different designs made and
> shipped was a great sacrifice on your part and I
just wanted to let you
> know that it is really appreciated!
------
AMEN. Who wants a great module in your system that
looks like crap. Dave's
panels have opened the door for great DIY stuff in the
MOTM format. So,
let's not restrain our thinking to conversion of
Blacet / Allgood PCBs.
Invent something.
-----
> This is in no way meant to detract whatsoever from
the modules that
> Paul has designed for us! They are simply without
peer as far as I am
> concerned!
-----
Another AMEN. A great VCO and a simple op amp based
voltage switch are on
two completely different sides of the degress of
difficulty spectrum. All
I can do is fill in a couple of gaps with some simple
stuff. Thank you Paul
for MOTM and the user friendly interface. The MOTM
"format" is what brought
many of us here.
---------
Now...for the big question. What can we expect next
from the
"Stooge Works"? Larry has talked about some really
nice
Reversing Attenuators Modules in the past; has there
been any
more movement on that front?
---------
This is an interesting, but no simple answer. Let me
try to tell you where
I am coming from.
1. All I can do is simple stuff. The reversing
attenuator with switchable
gain did get protoboarded and works fine. It probably
stops there.
2. My purpose of DIY is to fill in the gaps in my
system this year. I am
happy to share with others. The 822 / 831 was
something I never expected to
go past 2 or 3 users. However, I am not going to work
up the simple stuff
that is already on the drawing board for MOTM. It
would not be fair to Paul
to let him do all the hard work, and then suck some of
the potential profit
out of a MOTM release by making something nice
available first at a
no-profit price. Lets face it, if Paul does not make
money on a potential
MOTM release, why would he? I am no going to
contribute to the potential of
that happening. So, look for things from me that are
"outside" of the scope
of future MOTM plans.
3. Having said that, I cancelled plans for a pedal
interface and attenuator
with switchable gain as these are on Paul's list. So,
you must bug him
relentlessly until he makes them <snicker> Let's see
that the end of the
year brings. :)
My plans are to start work on a tube pre-amp / with
overdrive. It "might"
turn into a Tube pre-amp / VCA / overdrive. We will
see. I am very rusty on
this stuff, so this will take me a while. I will also
start working on the
alternate "ribbon like" pressure zone CV controller if
there is any
interest.
And, for anyone that made it this far.... I plan to
make a VERY limited
number of 822s and 831s available as kits and maybe
assembled units. If you
are interested, e-mail me.
Sorry this was so long.
Larry
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