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Thank you! I've not seen Chuck's mods for this build. (Just found 'em.) So Now I gotta go back in. :sneaky:

No. If you look at the pages for both of those builds (Radium Springs & Threeverb), you'll see the "springs" are not the same algorithm (FX patch).

A bit subtle for my tastes, but an easy build with a nice range of compression controls.

This turned out to be quite different from what I was expecting from a PT2399 chip. Lotsa fun with this after the build. A no-fuss build.

A sweet BMP-like sounding circuit . . . . the Q P Fuzz (PPCB Kewpie Fuzz). Another no-fuss build.

While both the Radium Springs and the Threeverb use the same Pythagoras PCB, it is the algorithm content of the FX patches in the EEPROMs that are different. The Pythagoras board is designed to support three algorithms (patches); bu the Arachnid board is designed to support 8 algorithms. The...

I use these from Amazon . . . . They work a treat!

OMG! So sorry. I only use the EZP2019 for pulling data from EEPROMs. I've never actually used it for pushing data to an EEPROM. It still may work tho - I just don't know. I don't know where my head was when I responded initially. To push data to an FV-1 EEPROM I've been using the SpinASM...

That should do fine.

I use an EZP2019+ burner tool with the SpinASM Assembler for Windows software. Easy-peezy. The link for the SpinASM Assemble is at the bottom of the Spin Semiconductor FV-1 page.

https://lovemyswitches.com/sub-mini-toggle-switches/

Check this out . . . . . https://www.pedalpcb.com/product/pcb633/ The trimpot can be replaced with an external pot.

Considering the number of sharp solder joints/points, my experience tells me that a single layer of electrical tape alone may not be good enough to isolate the the chassis' of those two pots. The solder joints/points can poke right thru electrical tape. And to be fair, IMO - ChatGTP is not a...

Maybe add the little pads for an SMD mounted device? Then you can come cleaner.

If you still want to roll your own, this chart may help . . . .

It sounds the same, but you lose the guitar volume knob clean-up feature. At least, that's how it behaves with mine. The daughterboard is just an after-boost, cuz the original circuit barely achieves unity gain.

Spencer does great service at AmplifyFun. A phone conversation with him is the best way to get started. His file formats are provided when so asked; providing nice templates to get started. He uses .AI, .PSD, .AFDESIGN & .PDF

Out of curiosity, what was it?

I was also under the impression that the '±X%' parameter of electrolytics implied that the tighter the percentage, the quicker, but less fully charged as their threshold of voltage is approached.

The TL074 should have 9V on pin #11 and 3.3V only on pins #3 & #12.