Akai ME-20A Schems/hacking

[Haible Juergen]

	>I just picked up a used Akai ME-20A arpeggiator.  It's a very
simple unit, 
	>but pretty effective.  Although this unit is a MIDI arpeggiator, it
doesn't 
	>accept MIDI clock info.  It merely has a pot to adjust the speed of
the 
	>arpeggio.  All this talk about retriggering S&H circuits got me
thinking....
	>
	>Basically I want to hack an external trigger into this thing, and
drive it 
	>from a MIDI to Din-Sync converter... I could then theoretically
make it 
	>respond to start/stop and tempo.  I figure I can use a divider
circuit to get 
	>the appropriate delay step length (quarter note, eighth note, etc)

I recommend doing it the other way round: Use the ME-20A as *master*,
and modify it to have a clock *output*. It's much easier ...
I have schemos for the mod at http://www.synthfool.com/diy/hj.html
(scroll down to the bottom)

JH.