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That looks great! You might also consider giving Chuck's Tube Bender Deluxe a try. I built one using @szukalski's "Wooden Ewe" PCB. I have spare PCBs, I'm happy to drop one in the mail for ya!

This is great, thanks for putting this together, @Cybercow. Even putting aside the film versus ceramic in the signal path debate, quality 1uF and up ceramics are actually kinda expensive. I mean, you can get cheap ones, but if I’m using one in the signal path, I like to go 50v or even 100v...

I had the exact same thought. And then I took a closer look and noticed it’s a “Hi-Watt” battery, that’s like head exploding awesome!

I think it’s similar to the principle at work with dad jokes. The somewhat perverse satisfaction that comes as much from eye rolls and groans as laughter. So it goes when I show someone something I built and they say, “Can’t you buy this for like $5?” Yea, but that’s not the point! DIY...

From that statement alone I knew I was going to love this build report, and it did not disappoint. This is all kinds of awesome! If I put a dollar amount on my time, plus parts and equipment, I've probably "spent" more on DIY gear than if I just bought it. But I can't put a price on the...

Ha! Good catch, I honestly hadn't noticed that before. At least it's not on the enclosure artwork, like the last time you caught one of my typos. I call it progress. :)

Another great build @rwl! I love reading the bird trivia you include in your build reports. The male Mergansers do remind me of the loon, which are fairly common in the northern midwest. Does the Merganser have a distinctive song/call like the loon?

Yup, more expensive and higher RDSon. A lot of those power mosfets are in the TO-220 package, which is huge (for a guitar pedal anyway). But I read the specs for TO-251 and saw it's barely bigger than TO-92. I even did an image search because I was initially somewhat incredulous. In terms of...

Says the rest of the forum, "Sheesh Matt, haven't we seen this a few times already?" Yes, but I finally got it right! I started with the Aion Cepheus. Then I made a custom PCB version of the circuit that had all kinds of problems, and though I got it working, it was too nasty to post a build...

Another update: still not getting 100% transfer on the first try on the green enclosures. Thus far I've done: Three bare aluminum (unfinished) enclosures - all transferred perfectly on the first try One pink enclosure (see above) - transferred perfectly on first try Two green enclosures -...

In reading about/trying to learn more about tone stacks, I came across this: TI TL082 Datasheet: Under the "Typical Applications" section, page 12, Figure 28, it shows the circuit for "Three-Band Active Tone Control". Looks to me like the 3-band Baxandall tone control.

I may have made a bad assumption. I was presuming that you are currently using the NE555 for managing the footswitch logic and engage/bypass relay. So my thinking was that it would be minimally invasive to - loosely speaking - swap the NE555 for a microcontroller. But if the ESP32 is already...

To be clear, I was suggesting you add another microcontroller such as the ATtiny13a, and leave the ESP32 alone (i.e. ESP32 strictly for tuning, second microcontroller strictly for engage/bypass). The ATtiny13 is DIP-8 just like the NE5532. The supporting circuitry/components would have to...

Partially just out of curiosity. I haven’t been able to find any examples of single-transistor gain stages with bipolar supplies. But more specifically, I am thinking about integrating this circuit with another. The other circuit is opamp based, and benefits from a bipolar supply.

@Chuck D. Bones - is it possible to adapt to adapt a design like this to a bi-polar power supply? I.e., what if we have +/-9V supply available? Is that something that can be done with minimal tweaking, or does it require a significant redesign?

A couple other 3-band Baxandall EQ stacks in pedals: Catalinbread Silver Kiss, traced by Aion; Cornish CC-1/GC-1, also traced by Aion. In the latter, he also links to Elliot Sound Products Equalisers page, which is an additional general overview of common EQ types. Figure 7 on that page shows...

I did builds using 1590B and top-mount jacks for a while (see @MichaelW's excellent 1590B Top Mounted Jacks guide). But I got away from that, because if you want to use cables with right-angle connectors, they have to be the generally-more-expensive low-profile type. IOW, I found that the...

You could save about 20mA by using something other than the NE555 for the relay+footswitch logic. One way is with a simple microcontroller such as the ATtiny13a: you can have it go into a deep sleep state when not responding to switch presses (here's how I did it), where the power consumption...

Emphasis mine. What makes the JHS successful and the EQ a failure? (For reference: PedalPCB Van Pelt Drive is JHS Charlie Brown v4, and PedalPCB Chela Overdrive is EQD Talons.) Is it possible to easily "shift" a Baxandall tone stack? What I mean is, say the sweep for a frequency is -15 dB to...

I recently posted a build report for my AionFX Cepheus. I kind of rambled on in that build report, but it turns out I really like it. The only thing I don't like is the mechanical 3PDT switching, as I've become a soft-touch snob. I have various bypass modules, but I'd need to do a custom...