Well, this was originally a project I used to learn Eagle, and I had to resort to some construction ‘contortions’ to make it fit in a 20HP panel, so it’s not the most diy-friendly… However, I do not know if the original source documents are now considered ’public domain’ or still copyrighted. Also s...

It works…!

…and ‘original’ U7 (lm339) has Vcc and gnd pins reversed: hmmm

I'm afraid to turn in on...

Also, may have found an error in 'original' schematic: appears ic8 (tl072) shows Vcc+ and Vcc- pin numbers reversed.

Is this the referenced connection?

I tried to follow the available ‘original’, but it seems this was missed…

Just looked at the dates of some my files: can't believe it's been a year since I've done any meaningful work on this...

Attached is what I've got so far...

I haven’t completed this yet, so it’s an unproven effort, so far. Definitely need to bump this project up, on list of things to-do… I also probably should have used readily available 78xx/79xx regulators, instead of ldo’s. I’d also like to add features used within this phaser (even/odd and buffered ...

Dry fit for front panel controls…

A more or less complete front panel...

Actually, I've been working recently on other projects:

https://www.diystompboxes.com/smfforum/ ... ts;u=55604

Definitely need to move this project to the top of the list...

Who needs a protoboard, when you have a ... pc board (well, 4 boards).

Time to give this project some 'wiiings': have sent boards out to be made.

Draft of pcb's: there's no turning back now...

First pass for a eurorack mf103 front panel.

Alpha/untested version of all boards: need to rely less on autorouter. • Utilized a 'sandwich' of 3 boards: Control, Phasers and Audio, with headers to form a kind of 'bus', to send signals between boards. Trying to keep overall form factor small, especially for eurorack use. • 2 interchangeable 'ja...

First draft - hope these don't wind up just being fancy trivets...

Yes, working with 0-100mv ac signals is going to be a challenge: grounding/shielding will be interesting-we'll see how it goes.

The 6.35mm (1/4") jack version.

Hope this ultimately does work...

Attempting to make this usable for both eurorack and stompbox, using a separate 'jacks' board: one for 3.5mm and a different one for 6.35mm (1/4"). Trying to keep all boards now within 80x100mm limits of free version of eagle, for now...