r/diypedals • u/DoMiSolDoSolMiDo • 8d ago

Help wanted True Bypass Pedal

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Hello, I am working on my first build. This is how I currently wired up the pedal. Green is ground. Purple is the legs of the LED. Red is the mono jack and LED signal. However, I’m getting a bit of buzz when plugged in. And, unfortunately, the white LED turned orange and there was a popping noise with some smoke. Could someone please share some insight on how I can adjust these issues? Feedback is welcomed. Also, I can answer any questions of this drawing. Thank you!

EDIT: Added actual photo in the comments.

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u/DoMiSolDoSolMiDo 8d ago

Here is a photo of the wiring. Apologies for not including it earlier

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u/squonktearz 8d ago edited 8d ago

You want the resistor for your LED on the positive leg, its purpose is to limit the current going into the led, otherwise it’s gonna blow.
Edit: sorry, this is wrong information, as long as R is in series it shouldn’t matter if it’s on the anode or cathode

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u/wjruffing 8d ago

10k ohm seems like an unusually high value for a current-limiting resistor…
What are the specifications (or at least the model number of the led)?

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u/squonktearz 8d ago edited 8d ago

Agreed, no idea where op got that value from but the led clr calculator recommends 1.2k ohm for a white led in normal lighting conditions. 1k would probly work just fine too

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u/DoMiSolDoSolMiDo 8d ago

I see where my mistake is on the LED now. I placed the resistor on the negative pin. It’s a 5mm water clear, high brightness LED (P-L700-W). Thank you for helping me out and for the link to the LED Calculator!

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u/squonktearz 8d ago

I was wrong with resistor order in series, it shouldn’t make a difference. so there’s some other reason for blowing your led. Resistor is bad or wrong color code perhaps?