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And green LEDs K switch single-pole double-throw spdt ON-ON illuminated red green D Push button switch, generic, two pins Small Signal NPN Transistor, TO-92 KK254 Molex connector 2.54 mm spacing Pin header 2.54 mm spacing D Switch, dual pole triple throw, 3 position switch, SP3T K switch normally-closed pushbutton push-button Lamp D Push button switch with 12 positions D 4 rotary switches are actually 8.8mm but require more on the larger board underneath the smaller board. // margins from edges h_margin = hole_dist_side + thickness; right_rib_x = width_mm - hole_dist_side - thickness; left_panel_spacing = left_panel_width / 3 + tolerance*8; echo("Left panel:", left_panel_width, " with spacing ", left_panel_spacing); right_panel_width = width_mm - 10 - center_adjust; center_col = width_mm/2; vertical_space = height * rotate_vector_cos; [left_edge, rotate_vector_cos * rail_depth], // top horizontal rib // h_wall(h=1.6, l=right_rib_x); // bottom horizontal rib // h_wall(h=4, l=right_rib_x); // one more vertical to mount a 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) * [BOM](Docs/precadsr_bom.md) * [Build notes](Docs/build.md) How to apply CC0 to the combination of speakON socket and 6.35mm (1/4in) stereo jack, switched, with full threaded nose and straight PCB pins, gold plated contacts, fully threaded nose, straight PCB pins, https://www.neutrik.com/en/product/nmj6hfd4 M Series, 6.35mm (1/4in) stereo jack, horizontal PCB mount, http://cherryamericas.com/wp-content/uploads/2014/12/mx_cat.pdf Cherry MX keyswitch, 2.00u, vertical, plate mount, http://cherryamericas.com/wp-content/uploads/2014/12/mx_cat.pdf Cherry MX keyswitch, 1.25u, PCB mount, retention spring instead of latch, https://www.neutrik.com/en/product/nc3fah-0 A Series, Chassis connector H female (A series layout), mates with Phoenix MSTB2,5/3-ST, horizontal PCB mount, http://cherryamericas.com/wp-content/uploads/2014/12/mx_cat.pdf Cherry MX keyswitch 6.25u Matias/ALPS keyswitch, ISO Enter, PCB mount, retention spring instead of latch, https://www.neutrik.com/en/product/nc3faah1-0 AA Series, 3 pole female XLR receptacle, grounding: separate ground contact to mating connector shell to pin1 and front panel.

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