[sdiy] tr 606 heavy modularization, pictures and questions (4:37 am)

[Anthony Bisset]

http://www.dspaudio.com/~abisset/606/606.html

Hi All,

I'm integrating my 606 with serge/fenix modular and could use a bit of
help.  Check the pictures to see something a bit out of control...

What I'm trying to accomplish:

in the example below, my 606 has no internal signal path for triggers,
they must be patched externally (loopback), giving us the ability to take
triggers out repeat, delay and/or drop them based on external cv
processing then send them into the appropriate trigger input.

The sequencer should be decoupled from the instrument triggers.
if someone wants to use the 606 in standalone mode, then the trig outs
need to be looped back to their respective trig ins:
here we have the bassdrum trig connect through our external cable:


   ____patch cable from bd trig out->in___
 /                                        \
|                                          |
| | | | | | |                              | | | | | | |
trig ins------------------606--------------trig outs


Now we put some modular cv processing in the middle



  __________modular_neg_slew_gen__________
 /                                        \
|                                          |
| | | | | | |                              | | | | | | |
trig ins------------------606--------------trig outs


now the bass drum is triggered based on the neg slew generator repeating,
lagging, or whatever after processing the 606 sequenced bass drum
trigger.

this sorts the 606's lack of swing and lets you do rushes, flams, delays,
whatever.

What i'm thinking to do is:

1.) isolate the trigger outs by cutting the traces directly after the cpu
and giving them their own banana jacks.  Does anyone know the appropriate
pins?.  I've read every post on AH with 606 in the message body and I've
emailed tons of folks, no one seems to know or be willing to tell me.
I have a scope here and I'm looking at the pins and decoding the
schematic, but some confirmation of what I'm seeing would be very
encouraging as I'm new to electronics.

I'm looking at PE and PF (pins 12-15 and 16-19) on the CPU. I'm also
looking at 32 (which looks like a constant pulse that will need to be
replicated when a trigger comes in and probably reflect the voltage we
want (since this is the 606's accent).  Are PD doing anything, the bass
drum seems to be on pin 10 (PD,2)

2.) build trigger inputs that correctly take external cv/gate signals
and translate them back into 606 trigger messages (maybe with better
velocity control)...

Can anyone suggest how to do this...  Would it be simpler to hijack the
post logic instrument trigger pulse's themselves rather than worry about summing
trig and accent together?  If I went this route, then i'd have to add some
circuitry on the trigger in points (which would be direct to the
instruments) to scale the voltage appropriately.

any suggestions, roadmaps, tourguides...

Your help would be warmly recieved and my experience will be posted on a
web page for others to read and utilize in their own projects.


-Anthony