Hex Schmitt Tremolo issue

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fishfude
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Post by fishfude »

Hey folks,

I've been working on a simple Tremolo pedal using a Hex Schmitt Trigger (4584) to switch an LED facing a LDR (in heat shrink).

I got off to a great start and it seemed to work better than expected, but then I noticed if I used it for more than 5 - 10 minutes the frequency would go very high and the usable range would be almost impossible to dial in. I've included a schematic and vero layout. Any thoughts?

http://imgur.com/a/0j99m

Cheers,

ff

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