Hardware MIDI CLOCK to gate/pulse converter

Dave Kendall · Posted: Mon May 23, 2011 5:10 am Post subject:

Hi all.

jksuperstar - interesting.... it would however mean a redesign of the PCB. Song position pointers are quite a bit more complicated to implement in hardware (though by no means impossible) due to their 3-byte nature. I did think about it during the design stage, but it would have made the PCB much larger and the circuit much more complicated. As it is, without SPPs, the GATE and TRIG outputs always be in sync if you start the sequence at the start of a bar. If you start again in the middle of a bar, it'll still be in sync, but the pattern you set with the dividers may not be exactly what you get from the gate outputs. Internally, START, CONT and STOP are OR-gated with the divider stages' RESET inputs. This worked fine with a K2000 and Pro-tools. It would be easy enough to disable one or more of these signals via a simple toggle switch if this is needed for another sequencer. I'll think about this some more..........
SPP recognition would require another 4-6 ICs I reckon.

wmonk wrote;

fonik · Posted: Mon May 23, 2011 5:42 am Post subject:

diablojoy · Posted: Mon May 23, 2011 5:30 pm Post subject:

thanks matthias good link i hadn't seen that one before
and i have everything required to build already
amongst my parts drawers Smile

arrmcbain · Posted: Wed May 25, 2011 4:44 am Post subject:

+1 support for a PCB run

(have already expressed interest over at Muffs)

Dave Kendall · Posted: Tue Jun 07, 2011 3:41 am Post subject:

Hi all.

It looks like we may have a PCB run now if enough folks are interested Smile

http://electro-music.com/forum/post-332394.html#332394

cheers,
Dave

adambee7 · Joined: Apr 04, 2009 Posts: 420 Location: united kingdom

pcb run for sure. i'd have 2. Very Happy

brother303 · Joined: Nov 02, 2010 Posts: 139 Location: ruhr-area/germany

Hi Dave,hi all,

having a DIN-sync out would be great. Do you have any idea of how to implement it?

Dave Kendall · Posted: Mon Jun 13, 2011 12:11 pm Post subject:

Greg - I'll have some time to look into it after next weekend (busy 'til then) At first look, the RUN/STOP gate of DIN SYNC would need a flip flop - maybe a 4013 or perhaps a 4027, to make it latch high during play. The pulse length of the internal signal in the M2C will probably need lengthening too, as it is way less than 1mS in the M2C.
A good DIN-SYNC daughterboard design would ideally have a way to set pulse length, for use with different modules, say, between 1mS and up to 10mS. Any feedback or comments on this from DIN SYNC users out there is welcome! Smile

cheers,
Dave

brother303 · Joined: Nov 02, 2010 Posts: 139 Location: ruhr-area/germany

Hi Dave,