Foot controlled flanger?

[Puguglybonehead]

@oldschoolanalog: Wow! That's really cool! That is sort of what I'd like to do, eventually, for a flanger. I would like to have a flanger with a sweep that is completely foot-controlled. Did you use a lamp/LDR arrangement, like the Maestro FuzzPhazzer for the foot-sweep?

[oldschoolanalog]

LED/LDRs setup. One LDR for LFO speed. One for delay in Comb filter (Manual Flange) mode. Super bright white LED. "Standard" Tel Ray Morley pedal light adjustment (this was originally a Tel Ray Vol pedal). Controls & switches on pedal set up to behave just like the PFL. See PFL owners manual for details (It's on the Morley web site). It's an A/DA, so there is the noise gate feature too. And the A/DA sound...

In retrospect; almost as much time was spent getting the sweep adjusted to my liking as was spent on building the pedal. That was really the most challenging aspect of the build. Worth it in the end though.

[nexekho]

Could you use a trimmer potentiometer in series with the sweep pot and another in parallel with the sweep pot to allow you to adjust the minimum resistance using the one in series and adjustably bypass the sweep using the other?  I dunno whether it'd affect the linearity of the sweep, but...

[12Bass]

Wow!  Nice work osa.....

[wavley]

I've never seen the schem for the PFL so I'm not exactly sure what the differences are between it and the A/DA, but I used the A/DA service manual to adjust all the trim pots on my PFL and all the test points were easy enough to find using the A/DA schem so they can't be that different.

I almost bought a useless old Tel-Ray volume pedal a couple of months ago, I was already kicking myself for letting my wife talk me out of it, now I REALLY am, I would love to build a project like yours.

[oldschoolanalog]

PFL is basically the same circuit as the CFL if memory serves me correctly(CFL schematic as Morley website). I traded my CFL a while back so I don't have it to compare to my PFL.  The big differences, compared to the A/DA, that I can see are the Morley has more LP filtering and a more traditional parallel regen path. Perhaps lightening the LP filtering on the PFL would "open up" it's sound more? That was my only real complaint w/the PFL. Too many highs were cut off making the top of the sweep not as dramatic as I like. It seemed to top out at a certain point; whereas the A/DA seems to keep going up & up & up...
Those old Tel-Ray shells are great. They take up a lot of pedalboard real estate; so loading one up to do a bunch of tricks is really the way to go. The are always some to be had relatively cheap on evilbay. Doesn't have to be an A/DA or PFL clone in there. An MXR117 or EM (either, w/a bit of creative circuit/control tweaking) would make a great pedal flanger. Plus the EM already has the "filter matrix" mode designed in. I chose the A/DA because I like the extremes it is capable of. Like I mentioned, setting up the optics is the hard part. Of course an EM (Thomeeque design PCB) could be fit into a wah shell (w/the controls on the sides) and a much easier to set up regular pot can be used.
Either way  a pedal flanger is a great tool for the f/x arsenal. Highly recommended addition to any pedalboard.

[sewage666]

I almost bought a useless old Tel-Ray volume pedal a couple of months ago, I was already kicking myself for letting my wife talk me out of it, now I REALLY am, I would love to build a project like yours.

Now I'm gonna go kiss my girlfriend for picking up that $10 beat up Tel Ray volume I had no use for before... It's black instead of chrome, but it's the right casing.

Once I can figure out this LDR stuff, I gotta do this. oldschoolanalog's work is very inspiring. I was thinking of even throwing in an old analog delay and DIY the Morley ECV that I'll never be able to afford.