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Indicator is sqrt(2*knob_radius_bottom²). First we move it back from that // most outward position to point out as specified. Cube([knob_radius_bottom, knob_radius_bottom, external_indicator_height], center = true, $fn = knob_faces); // @todo Calculate the convexity values based on http://www.latticesemi.com/view_document?document_id=213 BGA 0.8mm 9mm 121 BGA-132 11x17 12x18mm 1.0pitch Altera BGA-144 M144 MBGA Altera UBGA U324 BGA-324 BGA-624, 25x25 grid, 21x21mm package, pitch 0.4mm; see section 7.4 of http://www.st.com/resource/en/datasheet/stm32f091vb.pdf WLCSP-64, 8x8 raster, 5x5mm package, pitch 0.4mm; see section 7.8 of http://www.st.com/resource/en/datasheet/DM00387108.pdf Texas Instruments, DSBGA, area grid, YBJ0008 pad definition, https://www.ti.com/lit/ds/symlink/lmg1020.pdf, https://www.ti.com/lit/ml/mxbg078z/mxbg078z.pdf BGA 6 0.4 YFF0006 Texas Instruments, DSBGA, area grid, YZR pad definition Appendix A BGA 225 0.8 CLG225 Zynq-7000 BGA, 15x15 grid, 13x13mm package, pitch 0.4mm; see section 7.5 of http://www.st.com/resource/en/datasheet/DM00257211.pdf WLCSP-49, 7x7 raster, 2.999x3.185mm 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 0.4mm; see section 7.2 of http://www.st.com/resource/en/datasheet/stm32f429ng.pdf UFBGA-201, 15x15 raster, 10x10mm package, pitch 0.8mm; see section 6.2 of http://www.st.com/resource/en/datasheet/stm32f746zg.pdf WLCSP-144, 12x12 raster, 10x10mm package, 0.5mm pitch; https://www.xilinx.com/support/documentation/user_guides/ug475_7Series_Pkg_Pinout.pdf#page=267, NSMD pad definition Appendix A BGA 484 0.8 CLG484 CL484 CLG485 CL485 Artix-7 BGA, 22x22 grid, 23x23mm package, 1mm pitch; https://www.xilinx.com/support/documentation/user_guides/ug475_7Series_Pkg_Pinout.pdf#page=271, ttps://www.xilinx.com/support/documentation/user_guides/ug475_7Series_Pkg_Pinout.pdf#page=281, https://www.xilinx.com/support/documentation/user_guides/ug865-Zynq-7000-Pkg-Pinout.pdf#page=82, NSMD pad definition, 0.95x1.488mm, 6 Ball, 2x3 Layout, 0.5mm Pitch, https://www.st.com/resource/en/datasheet/stm32g473pb.pdf ST UFBGA-129, 7.0x7.0mm, 129 Ball, 13x13 Layout, 0.5mm Pitch, https://ww1.microchip.com/downloads/en/DeviceDoc/16B_WLCSP_CS_C04-06036c.pdf WLCSP-20, 4x5 raster, 1.934x2.434mm 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 0.65mm VFBGA-86, 6.0x6.0mm, 86 Ball, 10x10 Layout, 0.4mm Pitch, https://www.st.com/resource/en/datasheet/stm32wb55vc.pdf ST WLCSP-100, ST die ID 468, 3.15x3.13mm, 49 Ball, 7x7 Layout, 0.8mm Pitch, https://www.micron.com/-/media/client/global/documents/products/data-sheet/dram/ddr3/4gb_ddr3l.pdf#page=23 FBGA-96, 13.5x7.5mm, 96 Ball, 9x16 Layout, 0.8mm Pitch, https://www.st.com/resource/en/datasheet/stm32mp151a.pdf ST TFBGA-225, 13.0x13.0mm, 225 Ball, 15x15 Layout, 0.8mm Pitch, https://www.micron.com/-/media/client/global/documents/products/data-sheet/dram/ddr3/4gb_ddr3l.pdf#page=24 FBGA-78, 10.5x8.0mm, 78 Ball, 9x13 Layout, 0.8mm Pitch, https://www.micron.com/-/media/client/global/documents/products/data-sheet/dram/ddr3/4gb_ddr3l.pdf#page=26 ST uTFBGA-36, 0.25mm pad, 3.6x3.6mm, 36 Ball, 6x6 Layout, 0.4mm Pitch, YFF0006, NSMD pad definition Appendix A Zynq-7000 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 (http://www.ti.com/lit/ml/mpbg674/mpbg674.pdf, http://www.ti.com/lit/wp/ssyz015b/ssyz015b.pdf UCBGA-36, 6x6 raster, 2.61x2.88mm package, pitch 0.4mm; see section 7.5 of http://www.st.com/resource/en/datasheet/DM00284211.pdf WLCSP-104, 9x12 raster, 4.095x5.094mm package, pitch 0.4mm; see section 6.3.

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