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Winter Build Off 2023- JazzRunner

As usual the lead guitar is a bit "out front"
But the bass sits in there nicely.
ya we needed one of these...
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Finally got the peddle board together as wanted:) Small and light and self powered.
DI box- compressor- sonicake 5th dimension (11 effect peddle)- Tuner and then pedal sized lithium rechargeable on board power supply.(last 5-6 hours) or can be powered externally. I went with the sonicake as i wanted at least a chorus pedal and this pedal 2 chorus style plus all the other effects just for fun.The little case works great since it has built power wires etc and fits these little pedals perfect with no mods needed.
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So now for geeky stuff just because.....Led's ? Did I say led's ?
I wanted something blingy and hidden and I found it. I found a basic circuit using an IC op amp and some leds that will give sound reactive lighting.. The op amp takes the signal input and uses it to drive two leds (disco style) .
For power I'll use a custom power pack of 3 2032 lithium cels so it will be around 9vdc.'

View attachment 5001530
I sat down and soldered this simple circuit on proto board and then trimmed it to be small as possible.
** note this circuit shows two leds in parallel which will overdrive them unless you use a limiting resistor. So instead I ran them in series which allows them to work in their comfort zone, no resistor needed.

View attachment 5001531 here it is trimmedView attachment 5001532 .
It works!! initially I used a piezo pickup element for the signal, but switched after to getting tapped of the jack as it had the side benefit of adding a dirty fuzz sound .I call it beast mode.

For the on off switch I will mount the tiny yellow tipped on/off underneath the tip of the neck pickup since it is mounted with springs not foam. So just depress the top end of pup until it clicks. on/off invisible.
View attachment 5001533.
Here it is all together showing it working and the dirty fuzz it adds.Strangely the youtube version seems to filter out the fuzz effect..

Your photo shows two L.E.D.’s in series while your circuit shows two L.E.D.’s in parallel. Your photo shows a device( transducer???) taped to the front of the bass while circuit doesn’t show that device. Photo shows yellow pushbutton switch that is not on the circuit drawing. Is it N.O. or N.C. ?