[sdiy] OK, it's not a DCO, it's a FLanger, but..

[Peter Grenader]

The important part is I got something to work.

Lady and gents,

Sometimes (read: most of the time) I feel a witto foolish with my sophmorian
accomplishments here in the world of DIY amongst the giants (this means
you).  But that being said, I have been twiddling around of late with the
idea of modifing a DOD stomp flanger so it interfaces with my modular and me
thinks I got it down so, clock up another teenie success for Petey (that's
1,567 faillures to four actual working circuits, but who's counting)

I'll be posting the mods and schematics in the near future on my site, but
basicially what I did is purchase a (very) used DOD flanger for about $15 at
a pawn shop, ripped it open, and one after another just started removing
features I didn't need (like the kill switch, the battery jack, the 1/4
jacks, etc.).  I then got it running on my life support (replaced the
battery with a nine volt reg from my 12 volt supply), and added a switch to
allow for either the internal triangle LFO on the box to sweep the frequency
or allow for an external vc to do the same thing.

The thing doesn't like control voltages any larger than about 2 v's p-to-p,
but I tapped into the circuit through it's own lfo's level pot , so I really
don't think I'm going to wory about further attenuation than that.

About the only thing that was required other than that was adding  a -3 to 1
attenuation for the signal input to get in down the miniscule amplitude of a
guitar pickup and then a set of 1/4 amplifiers (one each for the two stereo
outs) on the other end to get up to my system level and that was it.

It works.  Does it sound fantastic?  Hell no...Well, not bad - it works, it
flanges, it's fun. So, until John Blacet makes good on his teaser to release
his own flanger, this is about a good as I'm gonna get.

If any of you lust after this effect as I obviously do, you might think
about this.  A nine volt regulator, a switch, one TLO82, three trimmers and
six or so resistors after that and you're Downtown Freddy Brown.

best,

Peter