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This repo uses submodules aoKicad and Kosmo\_panel. To clone: submodules avoid non-circular holes in footprints whenever possible; some fabs charge more for ovals PCB layout: [front](Docs/precadsr_layout_front.pdf), [back](Docs/precadsr_layout_back.pdf) * [BOM](Docs/precadsr_bom.md) * [Build notes](Docs/build.md) How to use your choice of 9 mm or 16 mm vertical board mount | | 14 pin connector, https://www.te.com/commerce/DocumentDelivery/DDEController?Action=showdoc&DocId=Customer+Drawing%7F215079%7FY1%7Fpdf%7FEnglish%7FENG_CD_215079_Y1.pdf%7F215079-4 connector TE-Connectivity Micro-MaTch female-on-board top-entry thru-hole 20 pin connector, https://www.te.com/commerce/DocumentDelivery/DDEController?Action=showdoc&DocId=Customer+Drawing%7F215079%7FY1%7Fpdf%7FEnglish%7FENG_CD_215079_Y1.pdf%7F215079-4 connector TE-Connectivity Micro-MaTch female-on-board top-entry thru-hole 18 pin connector, https://www.te.com/commerce/DocumentDelivery/DDEController?Action=showdoc&DocId=Customer+Drawing%7F215079%7FY1%7Fpdf%7FEnglish%7FENG_CD_215079_Y1.pdf%7F215079-4 connector TE-Connectivity Micro-MaTch female-on-board top-entry thru-hole 4 pin SMD MSOP, 8 Pin (https://www.winsen-sensor.com/d/files/me2/mems--gm-402b--manual-v1_1.pdf Omnidirectional, -42dB, reflowable, electret condenser microphone https://www.cuidevices.com/product/resource/cmc-4013-smt-tr.pdf Infineon_PG-LLGA-5-1 StepUp generated footprint, http://katalog.we-online.de/pbs/datasheet/7440310047.pdf wurth wuerth smd inductor Current-Compensated Ring Core Double Chokes, EPCOS, B82722A, 22.3mmx22.7mm, https://en.tdk.eu/inf/30/db/ind_2008/b82722a_j.pdf Current-compensated Chokes, Schaffner, RN122-04.

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