Need help trouble shooting a Tremolo build

Frequent questions about dead or faulty pedals. Whether you repair, mod or build pedals, debugging is important. Threads about general debugging problems irrespective of the circuit involved...
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Posts: 14
Joined: 05 Jan 2013, 02:02

Post by ejendres »

I built a Swamp Thang tremolo per this layout and the linked schematic. ... thang.html

When I use it it seems to boost my signal as well and add tremolo. The tremolo seems to be either drastic or extremely subtle with not really any points in between. I can't say that with 100% percent certainty as even direct into my laptop with no volume my guitar was bothering my sleeping roommate (sigh). I can do a proper audio evaluation tomorrow.

I do know something is wrong though, as the LED behaves strangely. It get significantly brighter as the speed knob is increased. And seems to be blinking fastest mid-sweep as opposed to at the end of sweep. It also goes nearly dark when I flip the speed switch.

Any clues?

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