SOLVED Awful Waffle head scratcher

innerlight

Active member
Hey all!
I assume this is a simple one for someone more learned than I, but I just built a functional awful waffle (I LOVE HOW THIS SOUNDS BY THE WAY), however the LED is not working! I’ve tried and tested multiple LEDs, as well as switching polarity just to be sure.

I also tried to follow the schematic (I am a novice here). I have marked the places with colored circles which I confirmed had continuity. I also checked both leds (the 4k7 and the 220r) just to confirm they’re the right values.
I’ve reflowed everything and also visually inspected.

Has anyone got any other ideas? This is a new problem for me, usually the pedal doesn’t work but the LED does! 😂

Many thanks, any tips appreciated.
Christian
 

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Hey all!
I assume this is a simple one for someone more learned than I, but I just built a functional awful waffle (I LOVE HOW THIS SOUNDS BY THE WAY), however the LED is not working! I’ve tried and tested multiple LEDs, as well as switching polarity just to be sure.

I also tried to follow the schematic (I am a novice here). I have marked the places with colored circles which I confirmed had continuity. I also checked both leds (the 4k7 and the 220r) just to confirm they’re the right values.
I’ve reflowed everything and also visually inspected.

Has anyone got any other ideas? This is a new problem for me, usually the pedal doesn’t work but the LED does! 😂

Many thanks, any tips appreciated.
Christian
What value do you have in there for r100?
 
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