Enveloped phaser

[Kipper4]

Thanks Duck.
Changes made based on what yous said.
I might still put the jfet input buffer back in. it sounds a bit brighter with it.
Note the new decay pot value (Mark Hammer)
New 22k stopper vact5B R28
Also changed Vact 5B led to a diffuse 5mm green.
Sens pot is gone. I couldnt see the point it was alway in one place.
New value Attack R32=330 ohms Smoother than a 50 ohms.
Also not shown in this diagram is a new switch to chose between Sqaure and Triangle wave vibe/Phaser.
altogether 3 switches 4 pots.
and whats looking like a rather large layout to do.

Thanks again

[Kipper4]

Heres Ver 15
Still playing with it.
Video to follow

[Kipper4]

https://youtu.be/mkzrochMohs

[strungout]

I'm really digging this! Will try it as soon as I get my hands on some vactrols.

[Kipper4]

These are roll your own vactrols.
for the envelope detector vactrol (dull) diffuse red 5mm led with a gl5528 ldr
for the vibe phaser vactrol super bright white 5mm led (others will work) and four gl5528 ldrs



You might need to change some of the clrs R28 and R82.
the intention is to mount the fourl ldrs for the phase stages on a dip 8 socket with the led down the middle of the socket.
I'll probably try to get some bigger (than I stock) heatshrink to cover it, although it might not be needed inside the enclosure. As Jons picture shows.
One could even go simpler and make it a two phase stage, One dual op amp less and two ldrs less, bosh.
the lm358 is important for the envelope but you can probably use TL072s for the phasing.

[duck_arse]

bosh! sounds fantastic, I think you've done it. where's the layout?

[something about ldr's, now gone to pm.]

[Kipper4]

Haha.
The first draft of the layouts done.
I'm not sure I'm entirely happy with it but it's a big improvement on the two previous attempts.

All ldrs are GL5528
Led for phase wobbling (lfo led driver)super bright white 5mm
Led for envelope detector is diffuse red 5mm.
Bosh.

[Kipper4]

Stephen
Here's the Whirly Bird with a speed mod.

[duck_arse]

indeed. is that the whirly 16 circuit unchanged? it sounds like it's done, fer sher. are you thinking of having "some switches" to switch from env'd rate to env'd depth, with a possibility of env'd both?

[Kipper4]

That is ver16. depth is on a pot, Not enveloped.
The speed is enveloped in ver16. sweeping fast to slow and vice versa.

I'm not thinking of doing a switched pcb to switch between the two versions. It's either one or tother.

Feel free to work out that switching if you want.....Aaaagh

less mission creep means it will fit in a common sized box and potentially generate sales for two models instead of one.

Phaser/vibe section is the same as is the envelope and led switching.
Maybe in future I will publish.
Take a closer squint at the drawing cake face.....

[Kipper4]

Heres the enveloped speed version schematic with a new speed range pot.

I couldn't have done it without you D.A.

[Kipper4]

ERRATA

R82 SHOULD BE 4K7
Whirly Bird Ver 15 and 16

[Kipper4]

I finally made a pcb for this Whirly Bird Fader Phaser
Shoe gazers delight

[midwayfair]

Nice demo.

I see a couple places you could refine the controls:

1. You added a pot of the wet-dry mix. I think with a voltage divider pot there, you can simply make it 100% wet/dry, which obviates the need for the vibe/phase switch -- the pot will do the same thing. Put pin 1 to Vb, pin 2 to R5, and pin 3 as-is.

2. Try with a high-output pickup or with a boost and I think you'll find that a threshold control might be necessary. The short decay was still a long time for the phase to fade out/in on your video -- this is partly because it doesn't matter how short the decay (22mS at minimum) is if the signal is big enough to keep filling the cap even 4 seconds after the strum.

3. Can you actually get 0 depth with that depth control? You might consider revising it to a voltage divider depth, to pan the LED between a steady voltage and the op amp output.

[Kipper4]

Thanks Jon.

It means a lot coming from someone who's effects, builds and playing are great.

1 great idea. next time I put it on the breadboard I'll try that.

2 I did use higher output pick ups and a booster, overdrive and a few others before the effect.
  Some with good results some not so good.
  Depending on the dynamics of the playing. the freqauncy of the notes and If chords  are 
played, and where chords are played it reacts differently. Unfortunately I've reached a point where further developments are on hold and playing style becomes important. Sadly it  will never be everything to everyone and I suspect this is true of the Pigtronix example too  despite its advanced features.
It's a bit of a compromise to be honest.

3 That sounds intresting. I'm not sure how I would go about doing that. Perhaps you could ellaborate so as when I put it back on the breadboard later i could try it.

The video is of version 15. There is no depth control as such. The depth is set by the envelope. When the envelope vactrol led goes dark the lfo slows down.

Depth
I can't remember if the ver 16 speed mod versions depth goes to 0. I'll try it again. When I try your other ideas.

I appreciate the help it means a lot.

[Kipper4]

Am I along the right tracks here Jon? or anyone else thanks
Rich

[Kipper4]

Bumpetty bump

[Kipper4]

[Kipper4]

double post deleted

[bloxstompboxes]

Quite a pedal there Kipper! Makes me think of Pulp Fiction and surfer-esque songs. lol. I like it a lot. I'll have to add this to the list if I didn't already. A lot of cool sounds there.