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I personally like the bipolar power option. More complex power supply, but allows simplification of the audio path. Feels more hifi. 9 and 18v KOT has already been done, bipolar is unique (at least from what I’ve seen). You could go the bipolar route, but then add space for a couple LDOs to...

Reviving an old thread to discuss a couple (three) PCB layout rules of thumb that I'm finding to be somewhat contradictory: Try to have a large unbroken ground plane (which I interpret to mean the ideal is a single continuous pour that fills the entire area of the board) Avoid having traces run...

Referencing the PedalPCB schematic (above): are you saying you reduced C1 from 47nF to 10nF, and increased C5 from 10nF to 47nF? I too started to think my Cast Iron was maybe a bit too dark, not "open and airy" enough, and reduced C5 from 10nF to 6.8nF (originally Tommy III value; also made...

So I've been playing this a fair amount since posting this build report, and while I liked it, I felt it was just coming up a bit short. And when I say "a bit", I really mean, an amount of off-ness so small it can only be explained by neurosis! Anyway - maybe I'm a treble junkie, or maybe I'm...

I came to the thread for the discussion about points systems, but am staying for the oh-so-not-subtle dispensary/cannabis innuendo! :ROFLMAO:

I just checked my order history - I've been sitting on this PCB for over two years! It's the AionFX Andromeda Deluxe Natural Overdrive, based on the Nordland ODR-C. Plenty has been written about this circuit's predecessor, the Nobels ODR-1. The Nordland ODR-C attempts to retain everything...

I only bought four of them, and so far have only used the two in this circuit. It definitely sounds great. I put it side-by-side against the previous version I've been using, which uses metal can 2n2369 (HFE 59 per my CTT). The difference - if there is one - is very subtle, and could readily...

This circuit - the Ibanez MT-10 Mostortion - has had some hype on gear forums, after some Nashville super-player hype (similar to how the hype for the Nobels ODR-1 got its start). AionFX does a great writeup on this circuit on the Quantum MOSFET Distortion product page. Incidentally, I...

As I've mentioned in a few recent posts, I'm really taken with the modified Animal Diamond Peak drive designed by @Chuck D. Bones. I created a PCB for this circuit earlier this year, and called it the "Hard Rock Pinnacle Purebred Drive", see my build report. I recently revised the PCB. The...

I’m pretty sure that if PPCB does this retroactively, then @Robert will end up signing over the deed to his house to @MichaelW.

Regarding the Paragon - does @Robert or anyone happen to have handy the labels for the bottom I/O holes? E.g., typical PPCB boards are in-gnd-sw-out. But the Paragon is unique and not labeled, and also not in the docs. I’m using my own bypass board for my Paragon build.

Those isolated DC-DC converters look like they take 5v input. If you have a 5v power supply, couldn't the 5v LDO and rectifier circuit be bypassed? What would be a super nice companion to this is something like those USB battery packs meant to charge your phone or other devices. I.e...

I also like #3, but: where's the gut shot? :)

From where did you source your TL072s? There was a thread on this forum maybe a year or so ago where someone reported that they got bogus or at least out-of-spec TL072s from Tayda.

@Robert - was kinda curious about this guy (EHX Spruce Goose), is it still in on the workbench?

I just gave away the last of my boards for this design. For anyone else who wants one, attached are the Gerber files I sent to JLCPCB for fabrication. Note the forum doesn't let you post .zip files, so I added a .txt extension. Just strip away the .txt part of the filename after downloading...

I've been on a bit of a pedal building hiatus for the last four months or so. Prior the build in this report, looks like my last build was the Hard Rock Pinnacle. My building break was in part due to the Hard Rock Pinnacle really being nearly perfect for me. I've settled on using the Hard...

Great as always! Now I have a weekend project. :)

Did you get this working? I took a look at the schematic, and that A100K level pot is quite literally the last thing in the circuit. So assuming the rest of the build is working correctly, I think either the pot is wired wrong or you might have a bad pot. Just for the sake of testing: can you...

So if I understand correctly, it looks like the volume is essentially constant, regardless of how the other three knobs are set? With a very slight step-function bump in volume near the end of the volume pot’s sweep? Putting the volume issue aside - do the other pots seem to work? The volume...