Ideas for next build

Discussion in 'Burnt Fingers DIY Effects' started by mrboson, Oct 7, 2014.

  1. mrboson

    mrboson Tele-Afflicted

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    I've scratch built three pedals so far (well, four if you include a buffer). Fuzzy picture below: Orange Squeezer, Dr. Quack, Rat (Rodent - which is the name of my cat). These were pedals I built to fill needs - I wanted a simple compressor, and an autowah/envelope filter, and I specifically wanted a Rat. They work great on my board, which currently is loaded with: Polytune Mini, my DIY buffer, Orange Squeezer, Dr. Quack, Rat, Timmy, Joyo Analog Delay, TCE Nova Repeater, Joyo trem.

    So.... I am looking for my next scratch build. I am not against kits, per se, I just enjoy the challenge of scratch. My question then, what are some suggestions for my next build that make sense with my current pedal board, something that I can fill a hole with, use it with my current family of effects? I'm sure someday I'll be at the point where I just build stuff and have pedals sitting on a shelf, but right now I want to use what I build.

    In my component stash I have a handful of old Ge diodes (not exactly sure what type), Si diodes (bunch of 1N4148, some 1N4002), op amps (JRC4558's, TL072's, a single LM308), transistors (couple each of 2N5457 and 2n5458) but I don't mind buying additional stuff outside of that crop.

    What would you build?
     

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  2. luckett

    luckett Banned

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    No BJTs?

    Try some flavor of electra distortion with a JFET instead of a BJT.
     
  3. mrboson

    mrboson Tele-Afflicted

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    You know, that actually made me think... my last batch of stuff I ordered should have had some BJTs in it, which I totally forgot about.

    Sure enough, I have bunch of 2N3904's so an electra distortion is a possibility.

    To be honest, (as I am still a novice at this) I am not sure what changes I would need to make to the circuit to build a JFET version.
     
  4. poiureza

    poiureza Tele-Holic

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    Well you're missing a wah, a low gain drive, a booster, a high gain dirt pedal and chorus/phaser/flanger/vibe/leslie type pedals. And a fuzz.

    You could try a high gain pedal like a BSIAB, thunderchief, ROG thor etc ...

    Oh and a cab sim could be a good idea. Start with the condor schematic and improve from there.

    Take a look at Run off groove and you'll find something interesting :p
     
  5. luckett

    luckett Banned

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    Build a basic JFET boost and hang a couple of diodes off the output like you see on an electra.

    [​IMG]


    Add a pot on the source to adjust gain level like is described here.

    http://www.muzique.com/lab/boost.htm

    Set the drain voltage anywhere from 4.5V to ~7V depending on what kind of distortion flavor you like.

    You can make it more interesting by adding a tone control, or two JFETs in series, or putting the diodes on a switch to get pure JFET clipping, etc. It's simple enough to easily throw on breadboard and tinker with until you get something you like.
     
  6. mrboson

    mrboson Tele-Afflicted

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    That's it! Something like this is already on my wish list, and I was just considering buying a H&K Redbox.

    But building a cabinet sim looks fun, and not as hard as I would have thought. I can even see from the description of the condor's circuit where the opportunities for experimentation are.

    Thanks!
     
  7. poiureza

    poiureza Tele-Holic

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    And after that you could build a small poweramp pedal based around the TPA3106D1 chip (or even combine it with the condor in a single pedal) and you're good to drive PA speakers :)
     
  8. TeleTex82

    TeleTex82 Friend of Leo's

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    Octave Fuzz
     
  9. luckett

    luckett Banned

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    A 32 pin SMD chip? That doesn't sound like much fun to solder by hand.
     
  10. poiureza

    poiureza Tele-Holic

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    Lol, yeah right, my bad :lol:
    Just throwing ideas around and that chip was the first to pop up on google.
     
  11. mrboson

    mrboson Tele-Afflicted

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    Yeah I think I'll leave the power amp for a future project.

    But I think I will build a cabinet sim and include a headphone amp in the enclosure. This MXR looks easy.
     
  12. mrboson

    mrboson Tele-Afflicted

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    I like this. There is a BYOC kit, but I'd rather scratch build something.

    Thing is, Google hasn't returned many octave fuzz search results with schematics. The Tagboard Effects site has a Fuzzhugger Phantom Octave, but I haven't really liked the youtube samples I have heard.
     
  13. luckett

    luckett Banned

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    If you use an LM386 chip for the headphone amp, it will have enough power to play thru a full size speaker at low volumes. It's also much simpler to build than that mxr amp.
     
  14. Starshine

    Starshine Tele-Afflicted

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    Foxx Tone Machine. Great octave sound and the non-octave fuzz is one of my favorites. Use 2n5088 for the transistors.
     
  15. Armo

    Armo Tele-Holic

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  16. mrboson

    mrboson Tele-Afflicted

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    <sigh> what to do first... all these great suggestions.

    I have a couple of Hammond 1590 enclosures arriving tomorrow. One is 4.39 in and the other 2.34 in, so I think it will be a cab sim with a headphone amp in the bigger one for the first build. TBD on the second, though.
     
  17. SixShooter

    SixShooter Friend of Leo's

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    How about a Bluesbreaker or Silver Pony (Klon)?

    The BYOC Parametric EQ looks sweet but not an easy build.
     
  18. nickhofen

    nickhofen Friend of Leo's

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    Hmm, 2N5457 gets in my mind Okko Diablo Gain Plus....
     
  19. mrboson

    mrboson Tele-Afflicted

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    So it's been a few weeks... you know, life and all that stuff.

    But I ended up building a Condor. No pix of the build process because there were a lot of starts and stops along the way. I based it on the stock ROG circuit but left things easy to change the caps affecting the notch depth. So I am experimenting there.

    Pic below is a low res shot of what I will put on the enclosure. I use iron on transfers and then spray over with clear acrylic. Pix of it all finished coming up after the weekend.

    I worked up a headphone amp (using this as the circuit) on a separate little board to include in the enclosure, but then I stupidly used dual opamps instead of singles. Wasn't paying attention there. The correct ones will be arriving in the mail today, so I'm pretty sure that will work.

    I was planning to use the Condor/Headphone box for playing at home, but then the powers that be at church just announced they want to go silent stage :twisted: :rolleyes:

    I think I will try this thing out tonight at rehearsal, minus my combo amp, and see what it sounds like in the PA.
     

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