This is a library of perfboard and single-sided PCB effect layouts for guitar and bass. I'm not an electrical engineer by any stretch of the imagination, just a DIY'er who likes drawing layouts. It is meant for the hobbyist (so commercial use of any of these layout is not allowed without permission) and as a way to give back to the online DIY community.

Monday, September 12, 2016

Suhr Riot

Gotten a few requests for this one. The Riot distortion from Suhr is built around 2, dual opamps (4580 in originals, but others can be used) with several clipping options for a great high gain experience. You can pretty much use whatever diodes you want, but it's laid out for 2 LEDs always clipping, with the option of adding either 3, 1N4148s in asymmetrical orientation or 4, 1N34s in series. You can also try replacing D4 with a 1N4148 (I've included pads for that on the PCB), or changing the color of the LEDs. Really, just experiment with what you have on hand and chose what sounds best to you.


31 comments:

  1. THE BE(A)ST DISTORTION PEDAL EVER!
    AWESOME!

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  2. Oh man! it's verified. I like the sound.

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    1. Made it im 4 hours including the etching. Now going for the triton delay. I'm going to verify it.

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  3. hi , please can tell me some substitute for the 4580?

    greetings from italy

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    1. rc/jrc/lm/njm/.../4558
      la6358
      la6458
      lm833
      ne5532
      op270
      mc1458

      and many many others should work just fine
      just stick and experiment

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    2. thank you so much for your fast reply

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  4. Hello, I've found missing 2 holes on the solder side of the perf board for 4001.(polarity protection?)
    Adding these 2 holes, now I am populating my board.
    Thank you for all great layouts here, especially reflecting actual size of each compnent.

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  5. Thank you for posting this amazing pedal .. any suggestions for 8.25K and 11.K Resistors ? Seams not be common values. And just to confirm the 1uF Cap is an Electrolic NP ? Or a Tantalum is prefered??

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  6. For me I'd just series some resistor closer to the required values (i.e 10K+1K=11K). For 1uF cap, you can use film cap (box type).

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    Replies
    1. Thank you for the response. I just finish this build, sounds really great, some mods: 11.3 -> 2 x 5.6K, red leds 3mm, and in the mean time i got my 4580, i used TL072 and work perfect. i love the sound of this pedal.

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  7. Is the switch and on/on/on?https://ae01.alicdn.com/kf/UT8lzezXhhcXXagOFbXs/121077958/UT8lzezXhhcXXagOFbXs.jpg this?

    and its wiring?

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    1. The switch can be on/on, on/off/on, or on/on/on. On/off/on would be the option I would go with though. Refer to the General Layout Notes for switch numbering guide. You should be able to figure out the wiring from that.

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  8. I can´t find this project in the transfer library, where can i find it?

    Thanks!

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    Replies
    1. It's in the Misc folder. If there's only one layout from a manufacturer/designer, it's in there.

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  9. Just finished building and noodling around with it. It sounds awesome! Really nice full sounding high gain madness. I found the 34a's not really working in this context so I changed them to 2n7000's. Those sound awesome in this pedal. Thanks again for another brilliant PCB. I really love the compact yet roomy layout of this one. Great work!!

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    1. 2n7000 is a transistor right? how would you lay it out in the circuit board?

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    2. Mosfet clipping is very popular in overdrives, like OCD and many others.
      You just connect gate and drain of your mosfet and use it like a diode - input wire goes to "G+D" output from "S"

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  10. Theres some very specific resistor values on there. How important are they or for the 11.3k can I just use a 12k?

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    1. 12k works fine, and the more common 8.2 instead of the rather specific 8.25 too.

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  11. Do you have any substitute for 1N43a's? They are hard to find locally, at least to where I live

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    1. You can use pretty much whatever diodes you want in this. In place of the 1N34As you could use 1N270, 1N60P, or any other germanium diode you can find. But it doesn't necessarily need to be germanium. You could use schottky diodes like the BAT41 or 43. Lots of options. Socket and experiment with what you can find.

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  12. Here's mine https://www.youtube.com/watch?v=B6ke6raNlmw
    Random germaniums from an old radio, measuring about 0.3v dropoff each, 1n4148s and red LEDs.

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  13. This comment has been removed by the author.

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  14. Where I can find the transfer in the library? thanks

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  15. Hey,I built this pedal, and im having some weird isue, outside the box without 3pdt sounds amazing, but when I wired the switch this add a lots of noise, hum and other noises... something that without the switch never happend. I used coated wire, and grounded input... plus this isnt my first build, i made already a bunch of high gain pedals without this trouble... tryed many different switches, dpdt to.. but always the same---

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