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3x3 array, NSMD pad definition Appendix A BGA 484 1 FG484 FGG484 Artix-7 BGA, 19x19 grid, 10x10mm package, pitch 0.4mm pad, based on this one, Number of indenting spheres. Sphere_indents_count = 7; // Number of facets of rounding cylinder ct = -0.1; // circle translate? Not sure. Circle_radius = knob_radius_top; // just match the top (mm rail_clearance = 8.5; // mm from very top/bottom.

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