Mystery Pedal ID?

Stompboxes circuits published in magazines, books or on DIY electronics websites.

Mystery Pedal ID?

Postby jonathant » 13 Apr 2018, 00:45

I picked up a home made pedal built on perf board for $3 at a junk shop. I was expecting something simple, but holy moley it's way beyond me. Of course it would help if it worked, but no. I'm hoping someone here will either recognize the pedal, or at least tell me what type it might be.

The ICs are:
1 @ mc14049ub  -  Hex Buffer
2 @ cd4081bcn - Quad 2-Input OR Buffered B Series Gate
1 @ cd4053bcn - Multiplexer/Demultiplexer
1 @ mc14016b - Quad Analog Switch/Quad Multiplexer
1 @ lf356n opamp

There are also 7 adjustable resistors on the back, a 3-position rotary switch with 3 LEDs for each position, one pot and an off/on microswitch.
Mostly I'd like to know what sort of pedal it is so I can decide if I want to troubleshoot or reuse the parts. Thanks in advance!
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Re: Mystery Pedal ID?

Postby deltafred » 13 Apr 2018, 09:27

My guess is overdrive/fuzz with digitally selected distortion levels.
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jonathant (13 Apr 2018, 21:25)
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Re: Mystery Pedal ID?

Postby soulsonic » 29 Apr 2018, 09:02

The multiplexer switcher chips might be used for an electronic bypass circuit

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