Monday, 5 October 2015

Liquid Mercury "Tap Tempo" Phaser

I know this layout size breaks the basic rules of this blog but we don't have many Tap Tempo projects and
this pedal (together with the Twin Peaks Tap Tremolo) sounds incredible.
I think they both would be a great addition to the website's library.
This is a great project by David Rolo from Madbean's forum
(check his website here: http://www.davidrolo.com/)
You can find all infos about this pedal here:
http://www.madbeanpedals.com/forum/index.php?topic=18859.0
Thanks to Hozy31 for verifying this one!





22 comments:

  1. Does this require a 1790? I'm assuming that video of the 1590BB is with a PCB. Any idea?

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  2. The video is with PCB but I don't know if he still sells them.
    It uses a mini rotary switch.
    Should fit in a 1590BBM or 1590BBT.

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  3. I never thought i'd need bigger vero board! Will it fit in a 1590B? ;)

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  4. Dude. Sick! In extremely good way!
    +m

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  5. Just incredible. If i may ask.mHow many hours did this take for you ro layout?

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    1. Yeah I was thiking the same thing

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    2. Yeah I was thiking the same thing

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    3. It has been a while. I guess it took 6-8 hours to draw it but i'm not sure.

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    4. Thanks for the hard work. its probably a 6-8 hour build as well.

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  7. 33x39 108 cuts 64 links...
    Sounds like a lot of work for me and my poor hands

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  8. Good lord... That's some sick stuff :) Not sure if I have the courage to try it...

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  9. wow... wild pedal
    can almost do the Zappa Ship Ahoy thing with it or black napkins.. almost but not quite like an Oberheim VCF thing... I need to find a PCB layout for this one.. not sure I can handle doing this one on vero LOL
    great layout though!

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  10. I'm probably going to get to work on this one in a few weeks or so. Looking to replace my Uni-vibe clone so I'll probably gut the 1590D I used for it and build this inside of that (should be enough space)

    A few questions (maybe a little dumb):

    1.) I'm assuming the LEDs on the board are just a way to show the optocouplers, right? It doesn't appear to have any actual LEDs on it in the pictures of the PCB version.
    2.) In the demo, the second one says that the caps have been offset with Univibe values. I happen to like the sound of that one a little better. Any ideas on how to do this? I see nothing in the build doc on it.
    3.) I don't see the transistor-shaped thing marked I/G/O on the vero labeled. I'm I right in assuming this is the 78L05 Voltage regulator?

    The build doc/parts list for the PCB version is located here for anyone that needs it -> http://www.davidrolo.com/wp-content/uploads/2014/12/Liquid-Mercury-Build-Doc-V2.0.pdf

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  11. IS anybody else getting ticking with the Square shape?

    I've built the LDR version I posted in the forum, and I'm getting ticking with the Square Wave.

    The Trianle & Sine shapes are tick free. There is also some ticking with the Random shape. The Depth control reduces the tick somewhat.

    I get the Square Wave ticking even without the LDRs connected, as soon as I plug in any of the 3 LEDs.

    Any suggestions?

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  12. Success!

    http://guitar-fx-layouts.42897.x6.nabble.com/Liquid-Mercury-Tap-Phaser-LDR-version-td26357.html

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  13. I finished this one last night, tested it today. After I put in a resistor that I found I had missed, it fired right up. I tested it with both VTL5C3/2 vactrols and some homemade ones (I used Tayda LDRs and 5mm diffused yellow LEDs). I have to play around some more, but I almost prefer the homemade ones in this circuit. I haven't discovered any ticking yet, but I have only scratched the surface of what this thing can do so far.

    Thanks for the awesome, well-planned layout. Even the off board wiring went smoother than I expected, thanks to most of the wires being located on that one side.

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