[sdiy] midi clock

[patchell]

    Yes, it looks like we are on the same page.  Your understanding and mine on
what a Analog Sequencer is is the same thing... ;^)

    What I had in mind was a relatively simple circuit.  You would use an already
existing oscilator to feed into a module that would generate a Midi Clock event on
either the rising or faling edge of the analog clock signal.  It would consist of
a couple of flip flops, a couple of shift register IC's like say a 74HC166 , a
1MHz oscilator, and a couple of dividers.  I was going to do some of this is a
22v10, but this is probably easier.  Oh yeah, and a 74hc05 and a 5 pin din midi
connector...I can probably cook this up by tonight.

    For going the otherway, ie MidiClock -> Aanalog clock, there are several parts
that will do this already, so if you want this capability, get one of them.  The
website you orignially posted had a DIY solution, and Blacet has one as well.

Sven Windisch wrote:

> On Sun, 1 Dec 2002, patchell wrote:
>
> >     Let me repeat what I think you want.  You want a clock source for an
> > Analog Sequencer, like a VCO,  that will also output a Midi Clock Event on
> > the active edge of the clock....
>
> i'm not sure if we speak about the same by calling it analog sequencer. i
> mean something like this: [1]
>
> and i imagine on more feature: for being compatible to midi-hardware owned
> by others (i do not own such equipment, only true analog ;-) at a session
> or sth. similar it would be nice to be able to recieve the midi-clock from
> others. so it could be something like a midi-clock-to-cv-clock-converter
> and a midi-clock-creator merged together. only if this isn't too
> complicated. if it would make a mess i could simply say "sorry, guys. i
> am the clock", too ;-)
>
> >
> >     It would be pretty easy to cook up some VHDL code for a 22v10 that would
> > do this....also, I imagine it would be easy to write some code for a PIC to
> > do this as well.  If nobody can come up with anything else, I would be
> > willing to cook up the VHDL code for a 22v10 (this is a Programmable Logic
> > chip) and a schematic.  It would work with any VCO.
>
> would be really nice.
>
> so long...
> sven
>
> [1]
> http://machines.hyperreal.org/categories/DIY/sequencer/sneppe-sequencer/

--
 -Jim
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