Korg Poly800/EX800 Users

I've not built buffer yet. I'm trying to send the sync clock to a Boss DR-110 with Acidlab'sync24 in mod kit. I completed stuff removing flying connections and testing every single wire: everything looks connected very fine; now Poly-800's sequencer doesn't stop (even if connected without a buffer) but DR-110 doesn't start, probably because there's no start/stop signal incoming on the other DIN's pin. When Acidlab's kit receives a sync24 signal it disconnects internal sync until you reset the drum machine and so it's happening. I'll soon (as I did years ago) build a little switch in series with 3 x 1,5 volts batteries ext circuit in a small box to send a manual start/stop to DR-110 (added) sync in and I'll tell you if that works. My goal is to use Poly 800's sequencer as a master timer for Boss DR-110 (with sync24 in) and a Microkorg (by MIDI sync in) in parallel. That's why wiring (with or without buffer) Poly-800's res 5.5 to it's MIDI in port side free pin (in sync24 style) is an easy and elegant way to give it a MIDI IN/Sync24 OUT double port functionality (leaving MIDI out port free) letting Poly-800 work with dual Sync24-MIDI sync parallel outputs by an "invisible" mod. Even on DR-110 I didn't make a hole but I let a wire go out from the on/off switch hole, connecting it to a flyng DIN male socket. I took a lot of care in not getting confused for din24 male/female start/sync connections right pins :)


P.S.: Boss DR-110's native trigger out (programmed by drum's accent) leads a trig in of a Roland SPD-20 drum pad. I even tried to build a small gate-trig to s-trig converter by a BC549 tryng to connect that trig out to an Anatek's Pocket Record (midi sequencer small box) tap tempo in (!) but it didn't work and sequencer didn't read tempo :( Nevermind, 'cause I keep Anatek's Pocket Record ready to send to MIDI rig a tempo sync by tapping it manually on a temporary pedal button according to non-syncable sources' timing (for ex. human beings) :))


--- In korgpolyex@yahoogroups.com, Michael Hawkins <korgpolyex800@...> wrote:
>
> The buffer I suggested may not work unless you match the signals to your external devices correctly.
> 
> So what is the type of equipment/interface you are trying to send the sync clock signal to?
> 
> Mike
> 
> 
> 
> 
> ________________________________
> From: static.people <static.people@...>
> To: korgpolyex@yahoogroups.com
> Sent: Tuesday, July 14, 2009 10:03:38 AM
> Subject: [korgpolyex] Re: Poly-800 24ppqn analog sync out very simple mod
> 
> 
> 
> 
> 
> Thanks Mike,
> I tried it before reading your post: IC28's pin 6 appears being connected straight to CPU's pin 9 (res 5.5 interrupt in) and in the service manual (courtesy of your site :) I saw on that path should run the right pulse signal. Unfortunately it doesn't seem to work directly 'cause, when I connected it as an out sync to my drum machine sync in, poly-800's sequencer stopped (nor the drum started), like connection (pin 6) and its signal were short-circuited. Fortunately when I disconnected sequencer worked again. Mine seems to be one of the "common mistakes" you refer to in your pdf :) Obviously I'll build a buffer like the one you recommend.
> Thanks again, Mike.
> Buzz of Static People
> 
> --- In korgpolyex@yahoogro ups.com, Michael Hawkins <korgpolyex800@ ...> wrote:
> >
> > I would suggest that you buffer the signal with a 40HC04 before sending it to the outside world so that you can be certain that bad things won't happen to the original signal.
> > 
> > I put together a small PDF with the recommended circuit diagram and dropped it into the "Clock Sync Output" folder in the "Modifications" section of the files area.
> > 
> > Mike.
> > 
> > 
> > 
> > 
> > 
> > ____________ _________ _________ __
> > From: Michael Hawkins <korgpolyex800@ ...>
> > To: korgpolyex@yahoogro ups.com
> > Sent: Tuesday, July 14, 2009 8:09:31 AM
> > Subject: [korgpolyex] Poly-800 24ppqn analog sync out very simple mod
> > 
> > 
> > 
> > 
> > 
> > 
> > Pin 6 on IC28 is the sequencer clock signal.
> > 
> > Mike
> > 
> > From: static.people <static.people@ yahoo.it>
> > To: korgpolyex@yahoogro ups.com
> > Sent: Monday, July 13, 2009 5:46:04 PM
> > Subject: Poly-800 24ppqn analog sync out very simple mod
> > 
> > Many years ago I read on a magazine about a very simple mod I made on my old Poly-800: it consisted in extracting a 24ppqn analog timing pulse signal (to sync old drum machines) directly out from a pin of an IC on the synth main board: it's the same clock pulse leading the internal sequencer (and being then converted internally to MIDI digital time sync out messages). Today I got a Poly-800 mkII again but, unfortunately, I don't remember what pin and what chip were the right ones: can anyone help in telling what is the right pin to connect? Then, it's easy to join by a small wire that IC's pin to a free side pin of a (midi) DIN port, so it can work as a midi port or as a din sync port (cause earth is in common on the central pin)! One good choice could be the MIDI IN port, allowing it being used even as a din sync out port, so you could use the Poly-800 as a master timing sequencer with a din24 sync out and a midi sync out working together for non midi
> > and midi machines. Now, please, remind me: what is the IC's pin on Poly-800's board giving internal sequencer's tempo analog pulse?!
> >
>