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Manual Trigger/Thru DIY project

2003-05-09 by Quantum Productions

Hi all

Just wanted to let you know that I just finished one of my do it yourself
modules for the A-100
this one is a 'Manual Trigger / Thru' module

This module has 6 sections, of which 4 are a manual trigger/thru (top
section) and 2 are a manual trigger only (bottom section)

** Manual Trigger/thru
has a INput, a manual momentary pushbutton and an OUTput
if nothing is connected to the input, the output gives a +5V trigger each
time the manual button is pushed (and as long as it is pushed, so it can
operate as a gate as well)
if there is something connected to the input, the output gets the throughput
of this each time (and as long as) the manual button is pushed

** Manual Trigger
this only has the push button and the OUTput, as soon as you press the
button the output gives a +5V trigger

usually you connect another trigger/gate/clock source to the INput of the
Manual trigger/thru, to enable this to be throughput with the button

what do I do with this module?
well, it is not a revolutionary design or high risk DIY project, but for me
it is quite an invaluable tool
because I can produce (max) 6 triggers manually, with which I can start
Envelopes, start/stop or clock the sequencer, switch a VC-Switch or
Sequential Clock, trigger a next sample/hold, reset an LFO, switch from one
sequencer to another (by means of a VCS or Seq switch) etc etc
this means that I can start, change or stop all kind of sound effects and
patterns with only a couple of pushes on buttons, and I don't need any
keyboard (which I would like to keep for the usual playing)

at this moment it can only be mounted in a rack with the +5V power source
(such as the basic system with midi) I do take the +5V from the bus directly
but I will expand the module with a simple circuit to create a +5V source
from the standard +12 V power

at the yahoo A100 site, I have put a couple of pictures of this module, in
the Photo Albums section in the album called Manual Trig/Thru
you can identify the Manual Trig/Thru sections (IN-red pushbutton-OUT) and
the Manual Trig sections (black pushbutton-OUT) easily

if you want to know more about this project, please don't hesitate to ask
more projects are in preparation

Eric

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