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Here's the schematic, I'm wondering if any bright minds have ideas on where i should start with troubleshooting this, I've used the same ICs as recommended in the schematic https://effectslayouts.com/wp-content/uploads/2023/05/Prismatic-EQ-Build-Doc.pdf

I think it’s an important distinction here to make that stamping your mark on your pedal and wanting to sell it to help grow yourself as a boutique brand is a different thing to a boutique company putting one of their offers in the competition to advertise their company. Zero pedals did that...

So you know how there’s a theme? This round was “anything goes”, which means that there are two who clearly had been working on them for a while. But next rounds will have a specific theme and a more strict rule about starting the build within the time frame, the theme will make it harder for...

Thanks man!

The Brick Vs Face is my humble contribution, but I bet Im being smoked by that Spectral Delay for good reason. Check out their build report when you get the chance, it’s a great read,

Also @Robert any interest in sponsoring a prize for the next round? They’re two month durations, you could pick between sponsoring Best Overall, Best DIY Approach, Best Aesthetics or Best Demo Video

View the entries, watch the demo videos, read the build reports and vote on them to help us pick a winner The idea is to score each entry, take your time, you can save your progress and come back another time too. Voting ends in 7 days. Cheers! Vote here

Hmmm nah at the moment it’s just Q1 - Q3 of the big muff straight into C12, so I just have the one IC, level is now the volume out right at the output. How dumb am I being? Should I bring back a buffer? I tried just swapping out the tone network between IC1 pin 7 and back into IC2 1 and 2...

I just pulled the IC and replaced it with another one and the values are now the same as yours, i replaced the other IC in and back to incorrect values, then new one again, same as yours, thanks for helping me out with this!

It's all plugged in pretty tightly, here's what I'm getting 1 8.7v 2 8.6V 3 8.5V 4 0V 5 4.6v 6 4.6V 7 8.6V 8 9.2V But be worth trying a different IC

Here's what I have so far, as you can tell I'm still very much learning

Sure, one moment!

I removed the Tone Job circuit, currently I chopped everything out before c12, guitar goes straight into it, have bypassed the BMP stuff too. TL072 has 8 and 4 from 9V to ground. Then there’s the voltage divider making 4.5V, connect 4.5v to pin 5. 6 jumps to 7, then 7 connects between 100u to...

@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?