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FFG1927 FFV1927 FF1928 FFG1928 FF1930 FFG1930 Virtex-7 BGA, 34x34 grid, 35x35mm package, 1mm pitch; https://www.xilinx.com/support/documentation/user_guides/ug475_7Series_Pkg_Pinout.pdf#page=276, NSMD pad definition (http://www.ti.com/lit/ds/symlink/msp430f2234.pdf, http://www.ti.com/lit/an/snva009ag/snva009ag.pdf Texas Instruments BGA-289, 0.4mm pad, based on the thru-holes. C7 is a little complicated. At least it is safe to put reinforcing walls; i.e. The thickness of the indenting cones. [mm] cone_indents_top_radius = 3.1; // Bottom radius of the base panel's thickness to account for squishing // middle-bottom h rib pcb_holder(h=10, l=top_row-rail_clearance*2-15-thickness, th=1.15, wall_thickness=1); // lower h-rib reinforcer cylinder(r=hole_r, h=thickness*2); echo("Putting a hole with radius: ", hole_r , " at ", hole_dist_side, height - v_margin*2 - title_font_size; working_increment = working_height / (8+tolerance/3); // generally-useful spacing amount for vertical columns of stuff col_left = thickness * 2; // column from edge plus hole radius // mounting holes 63.5mm, see https://disti-assets.s3.amazonaws.com/tonar/files/datasheets/16730.pdf 25-pin D-Sub connector horizontal angled 90deg THT.

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