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.

Wednesday, March 1, 2017

Test Rig

Here's a couple test rigs you can use to test effects before boxing them up. They use the same board mounted jacks I used on the "board mounted everything" layouts I did at the beginning of the year. The first one is fairly simple, using a DPDT toggle to switch between the effect and bypass.


The second one is pretty much the same idea, but with a simple audio probe for debugging included. (Props to my buddy Cody for the idea) You can switch between test mode and debug mode with a SPDT on/on toggle.


Use sockets on the 5 pads in the middle so you can easily plug in wires from the effect you want to test. You can directly solder a wire to the Probe pad.

13 comments:

  1. This is very cool! I'm going to take the plunge and etch my first board so I can build this.

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  2. Great work, but can you share sources? I have stereo jacks and will make holes thicker (not goot transfer printer at home)

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    1. In/out jacks are Neutrik mono NYS 2152. There are probably several PCB mount DC jacks that will work, though I believe the specific jack the Eagle part model is based on is the Kobiconn 163-7620E. I got some 2.1mm barrel-type DC jacks from Tayda that work well. The switches are pretty generic, so just about anything should work there.

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    2. Can I use open frame mono jack?
      How can I solder it?
      Thanks a lot
      Andrew

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    3. You can, tho you'll probably want to mount the jacks to something. The outer pads of the board mounted jacks are ground and the inner pads that have a trace going to them are in the in/out pads.

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    4. Thanks.
      For connections (in,out,9v,ground) may I use crocodile clips test with the wires soldered to pcb?

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    5. Try it. Use what works best for you.

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  3. Hi! Sorry for my ignorance. How does this probe work? Does it act as a "bridge" using wires instead of plugs on the effect's pcb?

    Thanks for your answer!

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    Replies
    1. Here's how the probe works:

      http://www.diystompboxes.com/pedals/debug.html

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  4. Very very useful! I don't know why i didn't have this idea before, seems so simple and effective! No more soldering and wires all over the PCB while testing my pedals! (:

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  5. Hi, do you have the library file for those Rean NYS2152? Thanks in advance, trying to use those but my eagle skills are still limited...

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    1. They're in the MadBean library (at least the 2012 library). You can find it and a lot of other Eagle related info over on the MB forum here:

      http://www.madbeanpedals.com/forum/index.php?board=45.0

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