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Hey, thanks for sharing your work. This will save me a lot of time. Gracias!

I will let you know!

I had the same issue on a different delay: the Sonomatic.
It was inexplicable how I probed loud audio signal on one side of the input resistor, but muffled deadness on the other side. Like you, I lowered the value just to hear the effect better. But it was never quite right.

The only thing these projects have in common is the use of PT2399. (In the case of the Sonomatic: 4 of them.)

Now, the PT2399 is nowhere near that resistor. But I wonder if it's creating an impedance issue that reflects back to the beginning of the audio chain.  I dunno, I finally gave up on the Sonomatic, even though every feature works, just at a hushed volume.

If I find a known good source of PT2399s, I'll try swapping them out and seeing if it makes a difference.  Good luck! Windbag is on my to-build list so I'll be on the lookout for that problem.

Maybe the problem will be tamed once you box it from the RFI shielding of the metal enclosure.

Did you ever solve this?

Maybe there's an error in the parts list? I wonder if it's meant to be 22k instead?

+1 would build.

Glad it could be useful!

I should mention, on this particular pedal, the LED comes ON when the pedal is OFF and OFF when the pedal is OFF.
Probably not related to the relay issue, but I figured I should mention it in case you experience something similar.

(In my case, I think it's because I used a PEDALPCB main board with a VFE relay bypass, and I probably just wired something incorrectly.)

Yeah, here's an open-source one that claims to have "EQD style" switching. (No tap dancing.)

And if I need to customize the code so that 1/2 note = momentary and anything shorter than a half note is full switch. Interesting. https://mas-effects.com/relay-bypass/

Is there any open-source code that would work with this board?

I see Coda Effects has some available code, but uses a different pinout from the MCU so I have to assume it won't work with this board.

Seems like a cool idea, but then there's be no way to do a short *STAB* of a distortion effect without it switching into latched-on.

Or am I missing something?

[tfl;dr:]

tfl;dr:
Be careful when subbing out similar relays. Don't use a "2 coil" relay.
Nothing bad will happen, it simply won't work.

Simple version: don't use the series with "L2" in its name.
I tried Panasonic TQ2-L2-5V, when the correct relay was out of stock,
and it didn't switch. (Actually, it would switch between effect and silence but never dry bypass.)

I swapped the relay with the specified TQ2-L-5V
and it works great! One "L," not two baby.

And that's the only thing I changed so I'm pretty sure that was the culprit.

Captain Obvious, out!

Has anyone else had the blue light up?

FWIW, my blue lights up.
I'll go back over my mouser orders and dig up the spec sheet on that LED if you're interested.

Unless he was gay. In which case it would be huge!

OK, future Uproar builders who might stumble upon this thread - I think I've got it sussed...

Changing C9 to 10nF already rolls off the wooly bassiness, rendering the Presence switch pointless. I thought the build notes implied you should do both. But it's an either/or.

In other words, keep C9 at the stock 33nF, and use the presence switch to clean it up.
Or change C9 to 10nF and skip the presence switch altogether. I could be wrong, but that's my current theory.

I guess I'll try the facemelter mod with the unused presence switch...

I know nobody likes a loser who exhumes an ancient thread, but I have to in this case. My experience matches
yours exactly. Did you ever do anything to get the presence mod working. Do you still love this pedal?

I finished it and played it for the first time last night and am totally wowed by it.
Also, my presence switch doesn't do anything audible. But I don't even care! It already sounds perfectly "present" without it. I don't have the wooly darkness some people are getting. But also, I put a middle range value in C2 which sort of permanently mid-boosts the thing partially, and is probably the reason for no presence effect.

I've developed this crazy theory: if your presence mod works, you've built it wrong.   !!



EDIT: disregard what I wrote in this space previously, i.e. my theory about why the Presence mod wouldn't work. I swapped C10 and CP on the board, but not on the schematic. Hence my bafflement.