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Killer. The I put pot sounds like a great idea. Where does it sit within the circuit?


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Right at the begining of the circuit, but after the pull down resistor.. now that you mention ... pull down is in parallel with 1 and 3 of the In pot hehehe.... but hey .... it does it's thing.

Very nicely done! That laser work is clean —do you still have your 10W? I've thought about upgrading, just so I can work faster.

And nice work with the pcb layout, too!

mmm ... never had my own engraver... maybe your confusing me with someone else ... I did previously post a laser engraved Echonaut, but both jobs where done in local printing shops.
What I can say is that these etches were made with either CO2 or fiber lasers .. 50-100 W.. not sure. 10 W would be diode laser me thinks (you can confirm?)

I'm giving kicad a go. And the learning curve is strong. If you give fusion a go let me know. I just hate the idea of a subscription service.


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I've sort of started with the free version of Fusion, just figuring out how to import, libraries, etc... haven't done anything new or edit yet.

Hello people ... Never mind my whining hahaha. 
I had a go at the "EHX" Lizard Queen. Just added an input pot to simulate guitar volume roll off.
Laser etch. And all (the little) I know about pcb design is thanks to storyboardist's eagle tutorial, so thanks again mate.
BTW .... Should I give Fusion 360 a go or what other cad has the fastest learning curve coming from Eagle?
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Be it work, life, family, health or good old fashion procrastination. Got this from Storyboardist (Thanks again) in 2019 BOTY 

First time laser etching enclosure. Normally I used UV printing but my only local provider is having problems with their printer.
This was also with a local service and lost some details in the graphic from what was originally intended.

Now a question for those who use laser for enclosures:

Will a diode laser be enough for powder coated boxes (Hammond or
Tayda) or do I need to step up to CO2 ?

Thank you all for those kind words.

What amp are you using this with? I've never tried a friedman amp or pedal but this makes me.want to try one.

My set up is with a Quilter 45 Microblock most of the time with a preamp of my own design... although, this preamp is in a pedal format so I can also go straight to the Quilter if I need.

is that a faceplate or some sort of decal?

It is a faceplate. It's UV printed so I could've easily gone with a direct to enclosure print... but I like the way the raw aluminum looks.

Hello all... hope you're doing ok in these times...
haven´t been around here for some time ´cause ... well .. 2020 happend 
Got this pedalpcb Brown Betty sometime last year and finally got it done.
Did some mods with the internal trimpot puting it on a daughterboard also in series with a fixed 33K resistor and a second offboard pot to add some control over the added gain.
At the same time the footswitch adds a series resistor and cap to ground on that same opamp's feedback loop. The Change is not drastic but you certainly feel some extra umff

Edit: Small demo (not all things are chunk hehehe)
https://www.youtube.com/watch?v=Jipx0ZA2CjE

Hello people ... hope you´re all doing ok.
Just finished this BW reverb from effectslayouts... one of the pcbs I got from the past BOTY thanks to storybordist. Works like a charm. Image inspired by the Kanagawa illustration.

Again, thanks to Brian, storybordist and all sponsors for the botys.

Thanks Diablo.. that's exactly what it's for. The name Bone Box comes from "hueso" (bone in Spanish) .. term some musicians use to call a paid gig, or maybe a job that's not your usual dayjob .

Thanks.
Haven't had a problem yet... Not serious anyway. I first started with an assortment pack from eBay. I think there were a couple of bad ones, but that was out of a couple of hundred. No noise issues other than the usual if it's a high gain distorsion. Although, it's always good practice measuring them, but hey.. I think it was Brian Wampler ( or at least the meme I saw was of Brian, haha) that said there is no mojo, just part tolerance.

Got these boards some time ago. Finally got around to making  something with them.
Stratus, TS based, went with the optional clipping and "flat mids" toggles.
Crescent, Crunch Box with optional 18v charge pump, also added.
Vector, Deep blue delay. Added a volume control or you might say boost. This one doesn´t have the mod onboard, but it should :wink:

hehe ... gotten ... nice build.

... "with some mods" ...... 

that's ... that's just ... I mean ..... daaaaamn!

them inards are awesome!! really cool

Beautiful enclosure.

I've been thinking of building something similar but using a class D amp (50 - 60 ish watt) amp. Adding also some sort or preamp. Quite fond of the ROG tonemender. Any advise on those prebuilt class Ds?

Thanks for the instructions!

You just learnt to me an import thing I still didn't get.
The two EQs should be a simple tonestack, and I guess, a Marshall style could be more appropriate. I see that trimpot, it is the Tone control, probably.

To recover the volume loss you advice to play with R12 - 22k, that should be control the gain of the last op amp stage.
But, could we try to decrease R11 - 47k? Or is right this the thing you advice not to do?

Yes. That works to. If you do a quick search for the schematic you'll see it sometimes at lower values.
Mine's at 4k7 actually.
And yes, the trimpot is the original tone control. You can leave a resistor for that to.