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.

Tuesday, April 14, 2020

Double Llama

Had a request for 2 Red Llamas on a single board, and my initial reaction was, "Just build two," but since there are 4 unused hex inverters that could easily be used for a second Llama, my reaction changed to, "Why not?" lol Designed to fit in a 1590BB, but might fit vertically and sideways in a 125B.


22 comments:

  1. Wah sangat menarik bro...
    Satu pertanyaan
    ,berapa volt 330uf?

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    Replies
    1. The 330uF is a radial just on its side. I'd go with one rated at least to 25v.

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  2. How it work,David? Separate stereo, or together? For what, explane please.

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    1. Hey Zzoyd! Check out this video. At about 3:40 in he demonstrates using two pedals... one into the other.

      https://www.youtube.com/watch?v=QlYIDomYN1A

      Wire the switches up and you get the same thing in one enclosure.

      Right David?

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    2. I guess you could wire it up as stereo, but you'd have separate controls for L and R. It's meant to be a 2 in one box, and used much like the video Wad linked. Run one into the other, or even doing something like the EQD Grey Channel and have one on/off footswitch and one to select between one side/channel or the other. It's really up to you.

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    3. Can u handdraw buttions commutation picture, suitable for this pcb?

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    4. Here's a drawing that I made of the wiring with A footswitch connecting into the B footswitch. One or both Llamas can be on, each with their own LED.

      https://photos.app.goo.gl/83yspt9WgSarq4u87

      (My apologies for mangling your drawing, David)

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    5. Hardly a mangling at all, Wad! That's exactly how you should wire it imho.

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  3. Thank u so much! Did you really build it?

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  4. About capasitors - can you create manual/picture whats size of capasitor picture means capasitor V?

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    1. Voltages should be higher than the supply voltage (in this case 9v). Electrolytic caps I tend to go for 35-50v generally as I've seen lower voltage ones blow even on a 9v supply.

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    2. Thank u so much. What about green(nF) and yellow (pF) capacitors, what Voltage should be?

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    3. Hi Serge. You might get some good help by reading up on some of the info available through other sites.

      http://tagboardeffects.blogspot.com/p/components.html

      http://www.generalguitargadgets.com/how-to-build-it/technical-help/

      http://www.generalguitargadgets.com/how-to-build-it/technical-help/beginner-information/introduction-to-parts/

      There are many others, but those two cover a lot of good info. I hope this helps you out.

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    4. Dear Wad,

      Another qustion about Barber Dirty Bomb Scheme (this blog have it). Layout have 13K3 resistor, i think is a bit rare. Can we use 13K only or this is critical?

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    5. That would work perfectly.
      You could probably even use a 12k resistor without noticing any difference.

      Within +/- 10% is usually "close enough" for most pedal components.

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    6. Dear Wad, need some your help again. Im complete my Barber Dirty Bomb, but each time pedal burn my (V Power Adapter ;))) Its work little time and then berned)) Now i lost 2 PSU))) How fo you think, what is reason?

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    7. Hello Serge.

      I am familiar with power supplies burning pedal components, but I have never heard of a pedal causing a PSU to burn up.

      We don't often get much feedback here on these threads unless it relates to de-bugging the pedal layout posted. I think you would get better help if you signed up for freestompboxes.org and posted your problem in the troubleshooting section. There are many people there who are MUCH smarter than I am when it comes to these things.

      I'm sorry that I can't help. Good luck!

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  5. Oh sial kehabisan pcb dan 330uf 😩

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  6. Verified.

    Wired up like the photo I posted in the discussion above, it works like a charm. I used an old RCA 4049 that I pulled from an organ (so I like to think there's a special sauce mojo spice element to my build). XD

    Playing with humbuckers... MAN!... this is a gnarly pedal.

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  7. Thanks for all your work on this blog, you're a saint!
    A couple of questions:
    1. Are both sides identical? Seems like they are, but it never hurts to check.
    2. Do you by any chance have the schematic you used for this layout? I would love to lay out my own PCB for this build, to make it more compact and sharpen my Eagle skills.
    Thanks in advance!

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