Friday, 14 August 2020

Mojo Hand Fx Rook OD

 

12 comments:

  1. Oh heck yea! I've been waiting for this one to come up! Tag it verified. I used a SPDT on/off/on for an extra no-clipping mode. Sounds great.

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  2. Hello Fuzzhead,
    built it. Works fine. But a bit too dark. Are you sure the input cap is 470 nF ... not 47 ?
    Thank you for all your work !
    f.

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    Replies
    1. Hi Frank!
      Here is the schematic.:
      https://www.pedalpcb.com/docs/Bastion.pdf

      Input cap says 470nF. I agrre it is a big value in that spot. Feel free to tinker with a small smaller value, would love to hear how it turns out.

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    2. ... ok. the 470nF is fine. I found the 100nF (BD-16) the guy who was darkening ... >> 22nF ... now I am really happy ! Bass & Treble at 12 o’clock is pretty normal or should I say, the way I like it ...

      ...very Dynamic Pedal 👍
      @fuzzhead
      Thank for you work !

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    3. @fuzzhead thank you for the schematic. That helps a lot.

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    4. @fuzzhead thank you for the schematic. That helps a lot.

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  3. Hi! Thanks for this. Can't seem to get unity volume with the toggle in the down position; any suggestions for boosting the overall volume?

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    Replies
    1. Hmmm, hard to know what the issue could be without voltages. Down sw position should be the louder setting due to the LED clippers. You might want to check for solder bridges and check your cuts in the area sorrpunding all the clipping diodes? And an audio probe very handy to have when troubleshooting.

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    2. I built this a while ago and had the same problem, I noticed that the second led (D2) did not turn on but I don't know if that's how it should be...

      PS: LM833 was the best sounding IC for me

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    3. I took this one off the shelf, I checked it completely and it had an error on the clipping diodes, that fixed my volume problem. I also reduced the 100nf capacitor as FRANK said and the pedal came back to life, I ended up using a 15nf instead. Nice TS variant.

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