Home Forums GuitarPCB Build Support True Bypass Looper Question…

Viewing 14 posts - 1 through 14 (of 14 total)
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  • #6019
    Pinhead
    Participant

    Hey everyone. I’m in the middle of assembling a set of true bypass loopers for my board, I’m using the 3PDT boards and dual-color LED’s. I’ve put together a diagram and I was hoping to get some feedback on it’s viability. It looks right to me, but then again the last one I did I soldered every wire to the switches themselves, this is a bit new to me doing it with the boards. The view is a bit bastardized, as the boards are shown technically upside-down and the view is from underneath the enclosure.

    Any help is greatly appreciated, thanks!
    -Shanon

    PS – right-click the picture and open it in another window to see it full-size.

    #6021
    wilkie1
    Moderator

    Your wiring looks correct to me.  Nice drawing.

    #6022
    Pinhead
    Participant

    Thanks Wilkie! I wasn’t 100% sure on the grounds, and I originally had a separate ground for each jack. After realizing it’s case-grounded, and I was over-grounding it, I omitted the extras and went with a single line between each board.

    The only other thing that I’m not quite sure on is the LED. It’s a dual-color red/blue. I want it red when bypassed, so that would mean the 90 degree leg (red) goes on the square white pad, correct?

    #6023
    wilkie1
    Moderator

    That is correct.  The white pad is for the bypass color LED.

    #6024
    Pinhead
    Participant

    Excellent, thanks for the help!

    #6062
    Pinhead
    Participant

    For anyone interested, here’s a cleaner picture of the loop-switcher diagram:

    @Barry – If you want to use this on the site at all, feel free. I left some space in the corner for you to add your logo.

    #8038
    PKR Pedals
    Participant

    I know it’s been a bit since this post, but I just finished putting one of these together for my board and #3 and #4 doesn’t work. 1,2, and 5 work great. 3 and 4 pass clean signal but as soon as I hit the switch it kills everything. I replaced 3 and 4 and it still does the same. Could it be the jacks? I went back and re-flowed the solder on the jacks but still nothing. Any thoughts? The LED’s work but no sound when activated. I will post a pic shortly.

    Thanks

    #8043
    PKR Pedals
    Participant

    For some reason I can’t post pics. I insert the image and hit submit but it won’t post

    #8044
    PKR Pedals
    Participant

    I re-tightened the jacks and #4 started working but #3 is still a no go.

    #8045
    PKR Pedals
    Participant

    replaced the jacks on #3 and that fixed it

    #8048
    Pinhead
    Participant

    I was just going to reply when I saw you replaced the jacks. I had the exact same issue with my 2nd unit. Drive me nuts for hours until I realized the jack was bad. Glad you got it fixed!

    #8051
    Barry
    Keymaster

    As far as posting pics here is a test:

    It is working I would try again.

    #8056
    PKR Pedals
    Participant

    I tried again but I must be doing something wrong.

    #8057
    wilkie1
    Moderator

    I’ve had jacks work loose over time.  So, Using a separate ground wire connecting all jacks to the central ground will prevent that from being a problem.

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