External LFO project?

[wavley]

So I just scored a Moog 12 Stage Phaser and I thought it would be cool to build a little external LFO box to control the second six stages, maybe a few different waveforms. 

I'm sure I've seen something like that around here, but apparently my search skills are failing me today.

[blackieNYC]

Tonegod.  Interfacing an external? Or specific to the moog?
http://www.thetonegod.com/tech/rockncontrol/rock.html

[wavley]

It has an external LFO CV input so I was just looking for a simple standalone LFO box to inject a signal, which I believe uses +/- 2.5v for it's range.

[blackieNYC]

I'm unfamiliar with your phaser (and so much more), but -check out midwayfair 's 1st response here.   http://www.diystompboxes.com/smfforum/index.php?topic=111261.msg1022640#msg1022640.   I was trying to place my tremolo depth swing I a different spot.
You need the LFO to swing around zero - his Cardinal LFO adapted to a bipolar supply might do just that, yeah? That buffer and its reference should do that, if I understand him correctly.

[wavley]

Perfect!

Thanks, that's pretty much what I was looking for, a nice eloquent LFO that's adjustable and I can put in it's own box to control the phaser.

Apparently, when in 12 stage mode you can use the internal LFO to control the first six stages and then inject an external LFO to control the second set of six stages.  Sounds like it's gonna be fun.

As you can see there are a lot of options for external control on this pedal...

[garcho]

Look at synth modules, lots of lfos. Ken Stone has a "utility lfo" and a few others that might be useful.

http://www.cgs.synth.net/modules/pic/schem_cgs58_lfo.gif

[wavley]

Look at synth modules, lots of lfos. Ken Stone has a "utility lfo" and a few others that might be useful.

http://www.cgs.synth.net/modules/pic/schem_cgs58_lfo.gif

I did have a glance at Ray Wilson's stuff too, that was the first place I went, but I've seen some pretty great projects around here so I thought I would ask.

The Ken Stone looks like it's easy enough to perf, I might try that.  I'm getting ready to start my own repair shop/recording studio so as soon as my stuff is unpacked in the new space maybe I'll have time to build them.