@Dud
First of all: thanks a lot for your stripboard layout.
I built it and it showed the same strange issue as you mentioned. Touching some diodes made the circuit act better. The amount pot acted strange. When I my louleamp (with the leds of) around the circuit the sound almost totally faded away.
Like something was acting as an antenna.
That started me thinking that the biggest difference between Juanito’s build and you stripboard is the dimensions. Juanito’s parts are really close to each other. So I moved the D1 diode from the pot to the stripboard as close to the other diodes as possible.
Result: circuit works perfect and no audible interference at all etc…
=> So for future builders: move the diode as close to the other diodes and you should get out of trouble.
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