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Need help trouble shooting a Tremolo build

Posted: 05 Feb 2013, 04:42
by ejendres
I built a Swamp Thang tremolo per this layout and the linked schematic.

http://tagboardeffects.blogspot.ca/2012 ... 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.

https://youtu.be/XGgHmCOjsN0

Any clues?