Category: DIY

GCFX SuperNature

The Grind Customs FX SuperNature PCB is a clone of a 1976 Coloursound Jumbo Tonebender at its finest.

It has the girth of a Muff (shares quite a bit of the same topology), but with the fizz of the older fuzzes like the MkII.


This PCB was actually populated by Juansolo and sent to me to play with. I could not put it down! It sounds awesome with my Gibson SG ran into my Bassman 135 2X15 cab… earth shattering.

Gut shot: Used the Grind Customs Lumen optical bypass.

First Transmission

It’s been awhile since I built anything as the heat here in Fresno is killing me in the garage. I figured boxing up an effect that I had populated already would be a good way to get back up and going again. This is a Gristleizer on a MusicPCB board. I populated it about 4 months ago and unfortunately just never did anything with it. I really liked the effect but did not have a real “need” to get it boxed. I recently ran across a few YouTube videos on it and got excited about it once again…to the bench to box it up. I am so glad I boxed this up as much fun was had with my Juno-60 and this thing!

Since this circuit was made popular by the band Throbbing Gristle ( Genesis P-Orridge), but I decided to go with artwork from Psychic TV era. I did a reverse etch of the artwork pulled from Google Images and meshed them together in Photoshop. I’m a little bummed that I burned the paint a bit when wet sanding on the bottom left hand corner… oh well.

I used a Grind Customs FX Lumen optical switch for bypass and tried to keep it as clean as possible.

Keys on the wall

I have wanted my synths on the wall for some time and had a heck of time finding information on how to do it… reasonably priced. I have friends that have used the slatwall and brackets like retail stores (Guitar Center) does but it can get costly. I found a couple sets of String Swing wall mount brackets that work with slatwall used online. I then was on the hunt for a piece of slatwall panel but I really wanted to find it locally since shipping would be a pain. I found that Lowes carries a product called Gladiator for garage and outdoor organization. It looked like a little bigger version of slatwall panels. With a little bit of modding on the String Swing bracket, it worked out perfect.

Here is my Roland Juno-60 sitting pretty on the wall.

I could not ask for anything better at this point. This was exactly what I envisioned. One more tier for one more synth and I will call this wall complete.  Another cool thing about the Gladiator product from Lowes is that they sell shelves, mount & hooks. I am going to have to put some cable holders and a nice hook for headphones.

Sea Monster

This is a Earthquaker Devices Sea Machine work a like. This is one of Madbean’s layouts from the Etchers Paradise DIY Project. I was really interested in this build after hearing a few demos of the pedal and decided to give it a go. I populated and verified that it was a working layout but… there was an issue with the “Dimension” control that I missed. Mine would get a feedback loop when turned pass noon but I thought this was normal. All the demo videos I watched didn’t really turn that knob past noon so I though all was good. Little did I know that Mark over at Tagboardeffects made a vero version from Madbean’s schematic and had the same issues and verified that this was not normal. Some back and forth went down on the Madbean support forum on fixes and it seems its all down to R9 and C9. Once I made the proper changes everything now sounds great. No more feedback issues and I now have a great sounding “slap back” with the Dimension control.

I wanted to go with a font that looked like the original Sea Machine font and added a bunch of tentacles. The artwork was pulled from Google Images and the font was from DaFont. I did a reverse etch and painted it a really dark purple. Looks black in photos.

Tried to keep it as clean as possible and went with the Grind Customs Lumen optical bypass switching.

Voltages to come.

1590A Buffered Bypass Looper

I am wanting a way to add a buffered output to the input of my Roland RE-201 Space Echo and utilize a bypass. The Space Echo does have its own external bypass switch but you signal still passes through the Space Echo. I wanted something with true bypass but a buffer on the effect output. I chose to use the simple Klon buffer on a layout by Storyboardist. But there is a catch, I want all this to fit in a 1590A enclosure. I messed with some calipers and my drill template in photoshop until I got a nice tight design and did a prototype. So far everything is coming together great. I chose to go with the optical bypass Lumen PCB by Grind Customs since I love the DPDT switches.

I will update when I get this all buttoned up and tested.

Rullywow Eaglet

This is a great work a like of the Eathquaker Devices Talon on a layout by Rullywow.  This is such a great sounding overdrive/distortion. It handles chords really well and can give you that classic psychedelic rock crunch. This will definitely get boxed up soon and placed on my board.

Big Muff – Supercollider

With so many Electro-Harmonix  Big Muff variants on the market, I am determined to try them all.. or at least try to try them all. This is one that I have yet to build and thought this would be the perfect time to verify Storyboardist’s beautiful layout. I look forward to getting this verified and boxed up.

Gravity Wave

This is a PCB from the Madbean’s Etchers Paradise. Its a Earthquaker Sea Machine work a like. This thing can go from subtle to wacky chorus in a quarter of a turn. I played with it for about an hour and found all kinds of great sounds from this thing. I will definetly box this up at some point.


Here are my voltages:

Powersource: 9.1v


  1. 4.3v
  2. 4.3v
  3. 3.9v
  4. 0
  5. 4.3v
  6. 4.3v
  7. 4.3v
  8. 8.7v


  1. 4.9v
  2. 2.4v
  3. 0
  4. 0
  5. 2.7v
  6. 2.4v
  7. 0.8v
  8. 0.8v
  9. 2.4v
  10. 2.4v
  11. 2.4v
  12. 2.4v
  13. 2.4v
  14. 2.4v
  15. 2.4v
  16. 2.4v


  1. Varied
  2. 4.2v
  3. Varied
  4. 8.7v
  5. Varied
  6. Varied
  7. Varied
  8. Varied
  9. 4.3v
  10. 4.3v
  11. 0
  12. 4.3v
  13. 4.3v
  14. Varied


  1. 4.3v
  2. 4.3v
  3. 4.3v
  4. 0
  5. 4.3v
  6. 4.3v
  7. 4.3v
  8. 8.7


Switch Monkey

I built this for my father as he wanted something to control his Digitech Trio with. You are able to use a Digitech FS3X with it so I decided to make one for him. Nothing crazy in this build, just 2 diodes and a few switches. It fit the bill and worked perfectly. I am really happy how this etch came out and I think he liked it also.

Gut shot:

Straight on shot: