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Two clockwise-most pins, looking from below. Clock rate (B100k) (not sure yet which 2 pins THT ceramic resonator filter filter hand-soldering SMD Crystal Oscillator Seiko Epson SG-3030CM package SMD Crystal Seiko Epson SG-3030CM package SMD Crystal SERIES SMD2016/4 http://www.q-crystal.com/upload/5/2015552223166229.pdf, 2.0x1.6mm^2 package SMD Crystal MicroCrystal CM9V-T1A series https://www.microcrystal.com/fileadmin/Media/Products/32kHz/Datasheet/CM9V-T1A.pdf, 1.6x1.0mm^2 package SMD Crystal 2012/2 http://txccrystal.com/images/pdf/9ht11.pdf, 2.0x1.2mm^2 package SMD Crystal Oscillator Seiko Epson SG-8002JC https://support.epson.biz/td/api/doc_check.php?mode=dl⟨=en&Parts=SG-8002DC, 10.5x5.0mm^2 package SMD Crystal Qantek QC5CB, https://www.qantek.com/tl_files/products/crystals/QC5CB.pdf crystal Epson Toyocom FA-238 https://support.epson.biz/td/api/doc_check.php?dl=brief_fa-238v_en.pdf, 3.2x2.5mm^2 package crystal Ceramic Resin Sealed SMD http://www.foxonline.com/pdfs/fe.pdf, hand-soldering, 7.5x5.0mm^2 package FOX SMD Crystal Oscillator Seiko Epson SG-8002CA https://support.epson.biz/td/api/doc_check.php?mode=dl&lang=en&Parts=SG-8002DC, 7.0x5.0mm^2 package SMD Crystal Seiko Epson MC-506 http://media.digikey.com/pdf/Data%20Sheets/Epson%20PDFs/MA-505,506.pdf, hand-soldering, 12.7x5.1mm^2 package SMD Crystal Oscillator IDT https://www.idt.com/document/dst/xu-family-datasheet#page=17, 7.0x5.0mm IQD Crystal Clock Oscillator Abracon ASCO series, https://abracon.com/Oscillators/ASCO.pdf, 1.6x1.2mm^2 package SMD Crystal Seiko Epson MC-146 https://support.epson.biz/td/api/doc_check.php?dl=brief_MC-156_en.pdf, hand-soldering, 7.1x2.5mm^2 package SMD Crystal Oscillator Seiko Epson MC-306 https://support.epson.biz/td/api/doc_check.php?dl=brief_MC-306_en.pdf, hand-soldering, 9.6x4.1mm^2 package SMD SMT mems oscillator Analog BGA-49, 6.25x6.25mm, 49 Ball, 7x7 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.infineon.com/cms/en/product/packages/PG-LFBGA/PG-LFBGA-292-11/ LFBGA-100, 10x10 raster, 10x10mm package, 0.5mm pitch; https://www.xilinx.com/support/documentation/user_guides/ug475_7Series_Pkg_Pinout.pdf#page=260, NSMD pad definition (http://www.ti.com/lit/ds/symlink/lm4990.pdf, http://www.ti.com/lit/an/snva009ag/snva009ag.pdf Texas Instruments, DSBGA, 1.36x1.86mm, 12 bump 4x3 grid, NSMD pad definition Appendix A Kintex-7 and Zynq-7000 BGA, 22x22 grid, 23x23mm package, 1mm pitch; https://www.xilinx.com/support/documentation/user_guides/ug475_7Series_Pkg_Pinout.pdf#page=301, NSMD pad definition Appendix A BGA 484 0.8 SBG485 SBV485 LFCSP, exposed pad, DDA0008J (http://www.ti.com/lit/ds/symlink/tps5430.pdf 8-pin HTSOP package with pin 2 and 3 https://www.youtube.com/watch?v=xSXH0wFprbY is similar to SR2 "lite" and was really popular a couple years ago de Miranda has two versions: https://www.youtube.com/watch?v=IPLT2B8EH0A and https://www.youtube.com/watch?v=J04yoOoGRNk the second mid-surdo part. He talks briefly about the order or selection of these, though we do know we need a bigger flat flat_size = 5 square(top_rounding_radius + pad, top_rounding_radius + pad); circle(r = top_rounding_radius, $fn = knob_faces); // Create a hole with radius: ", hole_r , " at ", width_mm - h_margin; input_column = h_margin; working_height = height - hole_dist_top); cylinder(r=hole_r, h=thickness*2); echo("Putting a hole for mounting screw: ISO 1481-ST 2.2x6.5 C or ISO 7049-ST 2.2x4.5 C or ISO 7049-ST 2.2x4.5 C (http://www.fasteners.eu/standards/ISO/7049/) || order number: 1924208.

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