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The original plan was board mounted pots. I couldn't get a clean layout how I wanted and I spent 2 days trying! This was kind of a compromise. The pots will be directly under the board so if they don't reach the wiring will be super short.

Thanks! Yes once the boards come and it's officially built,  I'd like to record a proper mic'd / video demo. The last bar on the above demo you can really hear the dry blend. I love how it sounds with slap bass!

Nice work - interesting arrangement of the dirt knob. I'd like to try that!

Also the - + connections at the bottom look really close together...

..Also, I am I wrong to say it's normal for the voltage to be 0 at the input on an inverting amplifier. I believe that is called 'virtual ground'.

Is it possible to show the bottom of the PCB? Tough to say without seeing the connections.

Here's some general stuff I'd check:
Is the chip in the right direction?
Is either chip getting hot or did they overheat at anytime before?

Check visually and with a multi-meter for solder bridges.

There could also be a problem with the 3pdt switch. Have you tried running the FX signal directly to the output or are you just flipping the switch off to get the bypass signal?

Cheers. Good luck!

They might be able to fit a few more on the bottom if the get rid of the battery!

I'll try to record a DI clip from the breadboard tonight!

Update: https://youtu.be/LB_CVFA69HY here's a sound demo!

That looks awesome!

Also the transistor is 2n4401. 2n3904 produces too much gain and I forgot to update that. V1 is vol, B1 is wet/dry, B2 is the original dirty blend and P1 is bias (labelled octoblend because it has a big affect on the intensity of the pseudo octave sound)

Hey folks,

Just wanted to share my first ever PCB. This is based on the parasit studios (much respect)TofuZZ, but I completely reworked the schematic and added a boosted wet/dry blend, bias control, a hard clipping limiter and changed a few cap values. I'm not sure if it will work, but I've spent hundreds of hours on it and the one on my bread board sounds awesome. I'm excited to get the board!

Cheers!

thanks!

I'm currently designing my first PCB. This is probably a stupid question, but I don't see this much on pro-PCB's so I thought I'd ask...

I always have a tough time trying to figure out where to solder all my off board grounds, so I thought I'd just put a few extra ground connections on my PCB. Is there any reason I shouldn't do that?

Thanks!

I use surplusgizmos.com - I don't buy from their website though, they have an actual storefront near my work. It is my nerd heaven. They have open boxes full of discount components that I can dig through, just like my childhood box of Legos.

On almost every NPN transistor based amplification/distortion schematic I've seen, they used the 'Linear Common Emitter' layout. So basically the audio in wired to the base, the voltage is wired to the collector and the emitter goes to ground. My question is, if the main terminal signal current flows from the collector to the emitter, why is the audio out connected to the collector?

What voodoo is happening here? I can't wrap my brain around what's happening... Is the audio signal going against the current?

Thanks,
Mike

haha thanks guys. I got a little fan at Walmart and setup a station next to the window. She seems okay with it. My marriage is saved for now!