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@Chuck D. Bones I call upon the wizard, I've breadboarded the tone section of the Angry Charlie https://docs.pedalpcb.com/project/AngryCharles.pdf Assuming my input is at C12 and I'm only using the one TL072, why is VREF measuring 8.5V? Something sounds really off here. I've triple checked my...

Ah this is good info, thank you! 100% know what you mean, I'm experiencing that at the moment for sure Well, in my naive mind, i was thinking I'd pass more treble to the EQ stack and let the treble knob have more range here, so trying to pass more to the EQ to play with. Is this the right...

A Awesome that sounds like a lot to look into, thanks so much!

Here's the schematic attached as a PDF, as you can see, the EQ (EarthQuaker Tone Job), has a buffer before and after the tone network, I'm wondering 1. Should this buffer be moved before the clipping stage of the BMP? If so, where should it go in relation to the input resistor and capacitor...

Nice one! I'll check it out now

Ah never mind, the answer of course came from Jack Orman, who wrote about op amp buffer patterns https://www.muzique.com/lab/buffers.htm

Trying to level up here https://docs.pedalpcb.com/project/BoxAndAll-PedalPCB.pdf Looking at the input and output buffers, what is the role of R2 and R11 coming from the voltage divider in the power section? Why connect the input to VREF like that when the op amp is powered by pin 8 already?

Cheers for the help, added a 3K3 across 1 and 3

Awesome man thanks, will the pot still have it's full sweep range or will it max out at half way and make no difference from mid way up? (Not a major). I can likely find this answer elsewhere so tell me "jUsT gOoGlE iT" but how do I determine the resistor I want to use here?

AH yep, that's u/RyanFromQA on Reddit. They haven't posted in 2 years but did a write up about that pedal here. They did design the PCB for the pedal and got it fabricated. They write about it here Just on that note, it's not that difficult to do once you've gotten familiar with schematics...

I'm wondering who is able to control 3 footswitches in a row on in a 125B. That could very well be just a PCB the person who built it created for this project, I can't imagine anyone else being wild enough to do this. If you are literally after an order switch though, you can simply use one of...

Thanks for the insight, I wonder, can I change the value of a resistor on one of the circuits that has the 500uA leak to something higher to bring the bias back down?

Yeah the first five the photo are ~75hfe and the second five are ~120hfe which is what I requested, but I didn’t also ask for low leakage 🤦‍♂️ Yeah maybe next time but these are for 5 x fuzz factories

I read all of it, there’s a couple links I’ll check out within that discussion but honestly the whole thing was quite cringe, that OP was trying to engage in a discussion and everyone else was handwaving them off with “why wouldn’t it”, “of course it’s like that”, or “you need to know more”.

Thanks, that definitely gave me more to read about. I’m curious what the op amps role is in a Tonebender MKII, I’m at the point of trying to absorb as much information as possible about this sort of thing, it seems related more to the power section of the circuit

1 v 7 You and me both! I did also read somewhere that the Q2 leakage doesn't seem to make a measurable difference in the FF, so I'm hoping for the best in just that one pedal (the one with over 500 on Q2). I'm building 5 of them so this batch will all be used. I'll just need to test them out...

That’s true, but this is black, without the white is simulating a “multiply” blend mode. With black, you’re not multiplying any colour, so what difference would it make? Genuinely curious, have you tried no white layer underneath for black graphics like this?

How'd you find working with the Chromium enclosure? A couple years back people were having problems with the powdercoat chipping compared to others. What was your experience like?