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[Dud]

btw, there 's an error on the baby 8 page (a cap inverted)

in the schem :

“The complete Baby10/Atarti punk console circuit, then looks something like this:”

i have put it here :

Atari Punk Console with CV and Gate (APC)

@ChristianBloch are right, i 've checked the schem and without Gate signal it is normal that it does not work, because in the diagram without Gate In of an APC pin 4 of the 555 from the top should go to +. so it is the gate signal that sends current and operates the beast. if you add a switch you could have both possibilities. and for the CVin, for me it should go to pin 7 of the 555 of the top EDIT : CV pin 7 like this schem with baby 8: [complete_sch] or here [7jzg7gU]