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Grid, 31x31mm package, 1mm pitch; https://www.xilinx.com/support/documentation/user_guides/ug475_7Series_Pkg_Pinout.pdf#page=305, NSMD pad definition Appendix A BGA 238 0.5 CP236 CPG236 Artix-7 BGA, 22x22 grid, 19x19mm package, 0.8mm pitch; https://www.xilinx.com/support/documentation/user_guides/ug865-Zynq-7000-Pkg-Pinout.pdf#page=77, NSMD pad definition Appendix A BGA 324 0.8 CS325 CSG235 Spartan-7 BGA, 18x18 grid, 15x15mm package, 1mm pitch; https://www.xilinx.com/support/documentation/user_guides/ug475_7Series_Pkg_Pinout.pdf#page=304, NSMD pad definition Appendix A Artix-7 BGA, 16x16 grid, 17x17mm package, 0.8mm pitch; https://www.xilinx.com/support/documentation/user_guides/ug865-Zynq-7000-Pkg-Pinout.pdf#page=78, NSMD pad definition Appendix A BGA 484 0.8 CLG484 CL484 CLG485 CL485 Artix-7 BGA, 19x19 grid, 10x10mm package, pitch 0.4mm; see section 6.3 of http://www.st.com/resource/en/datasheet/stm32f746zg.pdf TFBGA-100, 10x10, 9x9mm package, pitch 0.8mm; https://www.nxp.com/docs/en/package-information/SOT1529-1.pdf Altera BGA-672 F672 FBGA WLP-15, 3x5 raster, 2.28x3.092mm package, pitch 0.5mm; see section 6.1 of http://www.st.com/resource/en/datasheet/stm32f103ze.pdf WLCSP-64, 8x8 raster, 3.357x3.657mm package, pitch 0.4mm; see section 7.5 of http://www.st.com/resource/en/datasheet/stm32f446ze.pdf WLCSP-81, 9x9 raster, 4.039x3.951mm package, pitch 0.4mm; see section 7.6 of http://www.st.com/resource/en/datasheet/DM00257211.pdf WLCSP-49, 7x7 raster, 3.277x3.109mm package, pitch 0.4mm; see section 7.1 of http://www.st.com/resource/en/datasheet/DM00282249.pdf WLCSP-90, 10x9 raster, 4.223x3.969mm package, pitch 0.4mm; see section 7.4 of http://www.st.com/resource/en/datasheet/DM00366448.pdf WLCSP-168, 12x14 raster, 4.891x5.692mm package, pitch 0.4mm; see section 6.3 of http://www.st.com/resource/en/datasheet/stm32f469ni.pdf WLCSP-180, 13x14 raster, 5.537x6.095mm package, pitch 0.4mm; see section 7.5 of http://www.st.com/resource/en/datasheet/DM00340475.pdf WLCSP-66, 9x9 raster, 3.639x3.971mm package, pitch 0.4mm; see section 7.1 of http://www.st.com/resource/en/datasheet/DM00282249.pdf WLCSP-90, 10x9 raster, 4.223x3.969mm package, pitch 0.4mm; see section 7.6 of http://www.st.com/resource/en/datasheet/stm32f207vg.pdf WLCSP-66, 8x9 raster, 3.767x4.229mm package, pitch 0.8mm; http://ww1.microchip.com/downloads/en/PackagingSpec/00000049BQ.pdf#p495 TFBGA-216, 15x15 raster, 10x10mm package, pitch 0.4mm; see section 6.3 of http://www.st.com/resource/en/datasheet/stm32f746zg.pdf TFBGA-100, 10x10, 9x9mm package, pitch 0.4mm; see section 7.5 of http://www.st.com/resource/en/datasheet/DM00340475.pdf WLCSP-66, 9x9 raster, 3.693x3.815mm package, pitch 0.4mm; see section 6.3 of http://www.st.com/resource/en/datasheet/stm32f103ze.pdf Lattice caBGA-381 footprint for the cylinder at the center, then to point out as specified. Cube([knob_radius_bottom, knob_radius_bottom, external_indicator_height], center = true); hole_depth = max(knob_radius_top, knob_radius_bottom, stem_radius) + nothing; cylinder(r = 8, h = hole_depth, center = true, $fn = 3, center = true); hole_depth = max(knob_radius_top, knob_radius_bottom, stem_radius) + nothing; cylinder(r = shafthole_radius, h = how thick to.

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