Mod Electronics Odyssey Phaser optical whistle

RICHB555

Active member
Inspired by VanWhy’s build, this one was put on priority. I heard the “gyang gyang gyang gyang” when combining this pedal with fuzz in his demo and I immediately said “I have GOT to have that!”

I’ve now had two attempts at this build with 2 separate boards, both with the same unfortunate result. The phase effect seems audibly working fine in the background, but I’m getting a loud siren-sounding whistle that can be manipulated with the controls that goes in perfect timing with the pulse of the yellow LED. The instructions note to move the input/output connections to the right to clear the clocking circuitry, and I have done this on all attempts. Same result boxed and unboxed. LED direction is correct as noted on board. No change when using different LDRs. No change when trying a TL072 instead of a TL062 as VanWhy noted. Also attempted wiring direct to 3PDT lugs as wiring diagram indicates but result is the same if using switch board or not.
 

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