[sdiy] Uh oh ....... possible, assistance?? Sequencer .......

[harrybissell]

Generic method...

If you run the sequencer clock through a differentiator (RC
hipass filter) and drive the base of a transistor you can use that
to crowbar (force) the gate signal to go low at the beginning of each
step. 

This will only work when the gate is high... if it is programmed low
there
will br no effect.

H^) harry

"Rykhaard D.A.M.I.A.N." wrote:
> 
> After almost 8 hours at working at getting the 8 rotary switches
> tuned, it looks like they all are.  Finally. :)  (At least 99% tuned.
> Still have to get them all 99.75% tuned to 1V/octave, but they're
> close enough for demonstations / testing now, anyways. :) )
> 
> New problem though. :(  As well as having 8 individual Gate Outputs, I
> also have a pair of Master Gate Outputs to copy all of them TO.
> 
> The problem here - there's NO delay between the Gates, at the Master.
> I.E.  If you have Step's 1 and 2 On, then there's no restart of the
> Gate when the 2nd Step happens. :(  It's just a continuous Gate.
> If I have Step's 1 and 3's Gate's On, then, no trouble.  The ADSR
> hooked up to the Master Gate Output, starts from Gate's 1 and 3.
> 
> I'm going to give the 'Gate to Gate and Trigger converter' portion
> from Ray's page 2 of 3 of his 16 Step Analog Sequencer schematic, a
> shot, and hope that IT works.
> 
> http://www.musicfromouterspace.com/analogsynth/SEQ16_2005/SEQ16_2005.html
> 
> (I'd be sending all of the Gate Outputs to a 100K Summing Inverter
> through 100K to an Inverting Voltage Follower.  (100K in each of their
> feedbacks) around an LM358.  (COULD it be, because this opamp, is too
> SLOW?????  Just thought of that.  Should I try and LF353 instead?
> (I'm out of TL072s).
> 
> I'm going to go and pop the 353 in, and see if that makes a
> difference.  If not - I'll make the section of Ray's that I mentioned,
> on a miniature board, and stick that on top of the daughter board.
> (The motherboard's Grandaughter?? :D )
> 
> Thanks for any possible ideas / help. :)  If I can get the individual
> Gates working properly through the Master Gate Output, tonight, I'll
> post a single short wav file of it, in the Design section of my
> webpage. :)
> 
> --
> Take care,
> Warmth and Peace,
> Ryk
> 
> http://deathlehem.bravehost.com/damian.html - D.A.M.I.A.N.;s webpage -
> Feb. 0506 update