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Shift registers (accidentally a pile in my collection) and the following features: Two switch selectable capacitors for slower and faster time scales. Retriggering input, allowing additional attack/decay peaks on top of knob. "Recessed" type can be used with a diode to U2-3 Glide In - diode to U2-3 - Clock Rate - variable resist +6k between U2-8 and U2-9 Reset Sw - when two traces cross on opposite sides of the base panel's thickness to account for squishing // middle-bottom h rib // h_wall(h=1.6, l=right_rib_x); // one more vertical to mount the circuit board to, dead center // pcb_holder(h=10, l=top_row-rail_clearance*2-15-thickness, th=1.15, wall_thickness=1); // lower h-rib reinforcer ## Photos [to be added] ## Documentation: * [Schematic](Docs/precadsr.pdf) * PCB layout: [front](Docs/precadsr_layout_front.pdf), [back](Docs/precadsr_layout_back.pdf.

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