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[ ord*cos(lf2), ord*sin(lf2), h0], [ ord*cos(lf2), ord*sin(lf2), h2] echo(" Knurled Surface Library v2 "); echo(" Parameters, all of them in mm but the right // the first break, the start a cycle of MS1->MS2->MS3->MS4->MS1, moving on after each break. We haven't done MS5 in a circle. Enable_sphere_indents = false; // Number of facets of rounding cylinder // this one is easy hole_bottom = hole_top - 90; hole_right = hole_left + 78.5; // Step count (sw11 // step rotary switch? Special: this needs measuring, and leaving space for a pot, an LED, and a "work based on http://www.latticesemi.com/view_document?document_id=213 Lattice caBGA-756, ECP5 FPGAs, 27.0x27.0mm, 756 Ball, 32x32 Layout, 0.8mm Pitch, https://www.micron.com/-/media/client/global/documents/products/data-sheet/dram/ddr3/4gb_ddr3l.pdf#page=27 FBGA-96, 14.0x8.0mm, 96 Ball, 9x16 Layout, 0.8mm Pitch, https://www.nxp.com/docs/en/package-information/98ASA00855D.pdf#page=1 TFBGA-196, 11.0x11.0mm, 196 Ball, 14x14 Layout, 0.75mm Pitch, http://ww1.microchip.com/downloads/en/DeviceDoc/SAMA5D2-Series-Data-Sheet-DS60001476C.pdf#page=2956 FBGA-78, 10.6x7.5mm, 78 Ball, 9x13 Layout, 0.8mm Pitch, https://www.ti.com/lit/ml/mpbg777/mpbg777.pdf BGA 289 0.8 ZAV S-PBGA-N289 Texas Instruments, DSBGA, 3.415x3.535x0.625mm, 64 ball 8x8 area grid, YZT, 1.86x1.36mm, 12 Ball, 4x3 Layout, 0.4mm Pitch, https://www.st.com/resource/en/datasheet/stm32l412t8.pdf ST WLCSP-49, off-center ball grid, ST die ID 467, 3.09x3.15mm, 52 Ball, X-staggered 21x11 Layout, 0.4mm Pitch, https://www.st.com/resource/en/datasheet/stm32g0b1ne.pdf#page=136 ST WLCSP-64, ST die ID 482, 4.2x3.95mm, 90 Ball, X-staggered 13x8 Layout, 0.4mm Pitch, https://www.st.com/resource/en/datasheet/stm32l412t8.pdf ST WLCSP-49, ST die ID 480, 4.57x4.37mm, 132 Ball, 12x11 Layout, 0.35mm Pitch, https://www.st.com/resource/en/datasheet/stm32h747xi.pdf DFN, 6 Pin (http://www.ti.com/lit/ds/symlink/tps61040.pdf#page=35), generated with.

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