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, August 19, 2015

Gas Pedals DumbBell

Got a request for this one. It's an overdrive that's supposed to get you into Dumble sound territory. There are 2 versions of this pedal out there, a one knob version (with just a volume control), and a 3-knob version that the layout below follows.




10 comments:

  1. Is there a more readable schematic? It's a bit messy to back track the schematic with the board design.

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  2. if I want to use 3pdt switch for boost switch, do I just need to follow the pin out in General Layout Notes? how to wire the led for boost switch?

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    1. I believe those SWs are the input and output for the boost section. If so, which one is the input and output?

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    2. I'm pretty sure that sw3/6 is the input of the boost section, and sw2 is the output. What's the function of sw5?

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  3. Level and tone work, but it doesn't produce any drive, only clean sound. I've double checked the wire and change the ic 3 times still doesnt work well. Any idea?

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    Replies
    1. I just ran into a similar problem with an Acapulco Gold clone. So far I have not come up with a solution.

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    2. Funny, I got no problem when making that one haha. Anyway, can I see the schematic for this one?

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  4. I did a little research through the internet and found that 22nF should be 220nF. Still got no time to replace mine. I'll be back with report later

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