Pls help a newbie!!!

[Paul Maddox]

Paul,


>
>here's what I want to make:
>
>a sequencer for triggers. ie NO cv's - just triggers.  16 steps, 16
>switches. one trigger output.  takes a din sync clock.
>I may expand the idea to 3 or 4 rows of 16 & 3 or 4 trigger outs, but the
>logic of it should all be the same.  I have LOTS of devices that take
>trigggers & I want a way to sequence triggers live.
>

easy enough, some switches and diodes..

>here's what I'm thinking I need (THIS is where I need the help!):
>
>1.  some sort of counter that will take the 24ppq & change it into 4 ppq 
>(ie
>16 steps in a bar).  now, I guess I need something that will count to 6 &
>then reset, right?  take the first line from the counter & go into ........
>

yep, programable divider....

>2.  some sort of counter that counts to 16.   each pin of the 16 outputs
>goes to a different switch (of the 16 switches) & then all the outputs from
>the switches go to the trigger out.
>

YEP, 4067
4 to 16 line mux/demux, put a 5v on the common and feed the ABCD inputs from 
a 4024, driven by your programmable divider.

>does this make sense???  PLease comment....

yep, it does.

>What I'm having a hard time with is the different kinds of chips... ttl?
>cmos?? I figure for the first part, I can just get a count-to-10 chip, &
>hook up the 6th line to the reset line & it will count to 6, right?
>sychronous reset? asynchronous reset?  what's up with that?
>

nah, dont bother with that, use the 4067.

>I can't find a count-to-16.   is there such a thing?  if not, what is the
>easiest way to count to 16.... I could probably figure out the logic, but I
>simply don't know what the common IC's out there are.... don't know what I
>have to work with...
>

its not a count up, its a Demux/Mux... but it can be used easy eenough, just 
drive the 'output select' from a counter/divider (4024, is my favourite) and 
bingo.

>Any help would be really appreciated!
>

Dont forget , you WILL need diodes on each switch, else you'll get all sorts 
of wierd stuff going on.

help, this helps..

>Thanks!
>
>Paul
>

Paul
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