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Subject: Re: [motm] octave or interval switch for any VCO

From: "CHRIS PARKER" <cparker@...>
Date: 2000-09-05

Put me down for one of each please! Thanks!

-Chris-


>>> jlarryh@... 09/01/00 07:49PM >>>

Earlier this year, I made several posts to the MOTM list regarding a simple
module I have built on MOTM protoboard. The function of the module is
simple. It has CV in and CV out. Your 1 volt/oct control voltage goes to
the IN jack and CV out connects to your oscillator (MOTM or any 1 volt/oct
osc). This module has rotary style switches that let you dial in preset
intervals or switch your oscillators up and down by fixed oscillators. This
is a function not implemented on the MOTM-300 There are two versions of this
module.

Version # 1 has 3 rotary switches that will shift up or down 5 positions.
The normalling is such that you can use one CV in for all shifters. Or, you
can use 3 in and 3 out. So, at the touch of a shitch you can shift any
oscillator to a third above, one to a 5th, and one to a dominant 7th or 4th
or ?? The 5 shifts up and down are selectable by the user at the time of
construction.

Version # 2 has only 2 channels of shift, but has 4 knobs. One switch for
each channel selects only octaves up and down. The other switch has all 11
semintones of shift within the octave (user tune-able). So, you have any
interval you want times-two.

I have version # 1 built and working fine. Version # 2 is laid out on
protoboard and documented but not built. However, the circuitry is the
same, so it will work as well as version # 1.

Some of you expressed interest in these when I first finished the design. I
sent some of you copies of the protoboard layout and schematics.

Well, the time has come to decide if you want to build one of either of
these and have a nice MOTM style 1U panel. We are about to cut the screen
to make the panels IF there are still a few interested. It will be a
standard MOTM 1U panel. The blank will be an official MOTM panel purchased
from Paul. It is designed with standard MOTM spacing and layout. Unless I
have a few interested, no screen will be cut for either of these modules.

So, I NEED TO HEAR from you if you want to build this puppy. Notice I am
not selling anything. I am sharing a complete and 100% functional design
that uses regular MOTM protoboard available from Paul and commonly available
parts. In fact, I even have a list of the part numbers from the catalogs I
purchased the parts from.

So, e-mail me if you want want to buy a 1U screened panel for this module.
We are only going to make a set number for those who have promised to buy
the panel. This is a one time deal. You are either in now or probably not
again unless you want to order ONE panel later and pay the entire set up fee
yourself. By buying now, the set up fee is spread across all who what one.

When you e-mail me your intrerest, I can send you a copy of the front panel
design (THANK YOU Dave Bradley). And, I have an audio MP3 file that
demonstrates the version # 1 in operation.

Larry Hendry

P.S. In case you didn't catch this the first time, I am NOT selling these
in kits or constructed. But, if you are interested in DIY from a protoboard
with all the layout already complete and functional, this could be for you.