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Any DIY pedal builders on TB? Strut your stuff!

Discussion in 'Effects [BG]' started by SubHuman, Jun 26, 2020.


  1. SubHuman

    SubHuman

    Dec 29, 2005
    Good Old USA
    Are there any DIY FX pedal builders here on TB?
    I am attempting to build some FV-1 pedals for my friends for 2020 Christmas gifts since the dang virus has limited my other extracurricular activites. Note: these are for guitarists but I’m building a bass pedal for myself.
    I wonder if any of you have suggestions, success stories, or even learn from others mistakes to have some succesful builds?
    I like the FV-1 because it has powerful DSP programming capabilities with an easy to use GUI programming interface.
    I bought the SpinSemi FV-1 developement kit and am very impressed so far. I am able to create my own FX with the super cool SpinCAD GUI code compiler. It’s so simple a caveman can do it! Ha!
    Anyone here have some things they would like or are willing to share?
    I am also using PedaPCB as a source for my design. No affiliation.
    Thx!
     
    Supadope and Passinwind like this.
  2. karter2000

    karter2000

    Aug 21, 2005
    Nowhere land
    Here's a JFET preamp that I've been working on for a while:

    20200612_133226.jpg
     
    walkman, Supadope, jw23mind and 4 others like this.
  3. Passinwind

    Passinwind I know nothing. Commercial User

    Dec 3, 2003
    Columbia River Gorge, WA.
    Owner/Designer &Toaster Tech Passinwind Electronics
    Pedals have never really been my thing particularly, but I'm actually taking a whack at a simple DSP based one right now. It's based on an old Alesis/Wavefront chipset that's totally stoned age compared to what you're doing.

    Quite a few people have put my open source onboard preamp into stomp boxes though. While I was working out the design I did a few myself, like so:

    NAMMstomp2.jpg

    There are also quite a few TB threads on my DIY rack preamps and bass amps.
     
  4. SubHuman

    SubHuman

    Dec 29, 2005
    Good Old USA
    Awesome job on the Bass Pre-Amp if others are using it! Yeah the the same guy that worked for Alesis, Keith Barr went on to start SpinSemi and created the FV-1. EQD and a lot of pedal builders use it in some of their designs.

    Some one else (sorry I forget his name!) took the "convoluted to me" SpinASM code assembler/compiler and created a really useful GUI SpinCAD code designer compiler so it made it a lot easier to write custom programs. I bought the SpinSemi development board Spin Semiconductor - Products and once I learned how to write my own FX I decided to build some pedals for a hobby.
    I've built distortion stomp boxes so I can solder and read schematics. I just need a distraction during this crazy virus. No concerts...no sports...no fun!
     
    Passinwind likes this.
  5. SubHuman

    SubHuman

    Dec 29, 2005
    Good Old USA
    Cool idea on the JFET preamp! I see you also do some kind of programming/bread boarding too!
    Is that part of your JFET preamp design?
     
  6. Passinwind

    Passinwind I know nothing. Commercial User

    Dec 3, 2003
    Columbia River Gorge, WA.
    Owner/Designer &Toaster Tech Passinwind Electronics
    Nice, looking forward to seeing and hearing more. I'm a very longtime audio gear repair tech and have retired from that and kind of ported to DIY building and casual OEM design work over the last decade or so. Mostly onboard preamps for one luthier friend, nothing too sexy as far as the "commercial" stuff, but enough to get some of my builds in a busy NAMM booth at least. I've seen some of Keith's work and have also contemplated buying a SHARC development kit from Analog Devices. I had a DIY MiniDSP crossover appliance for a while but it was a very early one and not quite up to snuff for my purposes at that time.

    I hear you on the pandemic stir craziness. During house arrest I've designed at least a dozen new onboard preamps, knocked out the first version of the Wavefront based pedal, and am well into a 100 watt tube amp build. I was slowing down on sports and gigging anyway, but I'd definitely prefer to have those choices come on my own terms.
     
  7. Dark Horse

    Dark Horse Supporting Member

    Jul 31, 2008
    Austin, TX
    I’ve built a few things in my day ....

    :)

    If you ever get to the old diystompboxes.com forum, you can look up some stuff under my forum name “Dragonfly”.
     
    Last edited: Jun 26, 2020
  8. karter2000

    karter2000

    Aug 21, 2005
    Nowhere land
    It was, as it has relay bypass. Initially, I was going with a micro controlled bypass, but opted for a flip-flop based system to reduce costs/complexity. I also had some ideas of possibly playing a pattern with the LEDs in the logo, but haven't done that yet.
     
    Passinwind and SubHuman like this.
  9. here's my YouTube channel. also includes some amp builds and modded pedals. i mostly aim towards heavy music

    YouTube

    i mainly use punches and acrylic paint to label

    IMG_20200310_023230.jpg
     
  10. SubHuman

    SubHuman

    Dec 29, 2005
    Good Old USA
    Are these like transistor overdrive pedals? I dig the industrial, no frills design. I'll check out your youTube!
     
    BassBeginer64 likes this.
  11. yeah tubes in pedals is gimmicky to me.
    either they're super low voltage or you've got high voltage on the floor where some idiot can spill beer on it
     
    MYLOWFREQ and kosmicwizard like this.
  12. AudioTaper

    AudioTaper Supporting Member

    Sep 23, 2018
    I built about 20 pedals of various types between 1999 and 2003 (ages 18 to 22) Mostly modded Fuzz Face clones, 20dB clean boosts, there were a few one-offs (TS808 with a blend and switchable gain channels, octave fuzz, FET OD)

    It was fun, but then the boutique pedal business really took off and I didnt have the resources to compete. Heres a few on my Fuzz's and boosts, and a digital theremin that sounds like a buzzsaw.
    20200626_215255.jpg

    My 22 year old self was proud of the workmanship. My current self is not.
    20200626_215419.jpg

    I still have boxes of parts, Hammond 1590 boxes in various stages of completion, and thousands of resistors, transistors, and JRC4558 op amps. 20200626_215628.jpg

    I do want to build a dual channel blend for my pedalboard. At least I have parts on hand.
     
  13. Killing Floor

    Killing Floor Supporting Member

    Feb 7, 2020
    Austin, TX
    I've tried BIY lately. It's been a fun journey. Buy it Yourself.
    But a couple weeks ago I did TYW. I Told my Wife what I wanted for my birthday and a new Julia chorus pedal showed up. I'm happy with the results.
     
  14. I want to ask you a question, why can't I pm you?

     
  15. AudioTaper

    AudioTaper Supporting Member

    Sep 23, 2018
    No idea, but I get that all the time...
    I'll PM you
     
  16. callofcthulhu

    callofcthulhu

    Oct 16, 2012
    Holy shag those amps sound massive.
     
    thetragichero likes this.
  17. SubHuman

    SubHuman

    Dec 29, 2005
    Good Old USA
    Cool stuff everyone! Yeah a point to point Fender Vibrolux or Blackface is a goal I have. I’ll add it to the others!
     
  18. SubHuman

    SubHuman

    Dec 29, 2005
    Good Old USA
    You ever see those miniaturized military tubes that are NOS? Anybody know of a pedal design that uses them with HV...not the starved voltage gimmick pedals? Ebay has tons but I can’t find any info on using them for tube preamps. Anybody?
     
  19. callofcthulhu

    callofcthulhu

    Oct 16, 2012
    You mean like this?

    Ibanez Nu Tubescreamer Overdrive Pedal with Nutube

    I seem to recall at the time this came out they had a few other "nutube" branded pedals but not seeing any after a quick google search.
     
  20. SubHuman

    SubHuman

    Dec 29, 2005
    Good Old USA
    Yes the NuTube might be fun to try but pretty expensive to play with for the DIY'ers.
     
  21. Primary

    Primary TB Assistant

    Here are some related products that TB members are talking about. Clicking on a product will take you to TB’s partner, Primary, where you can find links to TB discussions about these products.

     
    Feb 28, 2021

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