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Kosmo format. * [Schematic](Docs/precadsr.pdf) * 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 7.5mm holes, not 6mm alpha pots - 9.8mm, +2mm - rotary - 11.5mm, +3.5mm -- biggest by far, maybe 12.6mm? SR2511 series are 11.43? Maybe more? Distance between pcb and front panel, vertical PCB mount, https://www.neutrik.com/en/product/nc3fbv2 AA Series, 3 pole male XLR receptacle, grounding: without ground / shell contact, lateral right PCB mount, asymmetric push, https://www.neutrik.com/en/product/nc3fbv2-da B Series, 3 pole female XLR receptacle, grounding: mating connector shell and front panel. Opportunities abound for aesthetic choices. Determine appropriate stand-off hardware for connecting front panel 24ca7abc85 Added schmancy pcb for v1 front panel 24ca7abc85681936397a2802c8155420fcaf679c updated C14 footprint, traces, groundplane Find and replace last few thin traces, fix teardrops and gnd fill db7d02719b68f4d2f81a25d8b6527257f18cc3a1 Embiggen traces, add teardrops updated C5 footprint & tracing; schematic annotation Add 55k-ish resistor to coarse knob to fix tuning range pushed tag v1.0 to synth_mages/precadsr From fd8b2dd8a7c07368476bde4f42aea6df4bff239b Mon Sep 17 00:00:00 2001 Subject: [PATCH 14/18] replaces FIREBALL mask/etch with silkscreen caaf12f2da0fe056d0b625b9c1a860efbae9f4d1 adds ideas for a single 0.25 mm² wires, basic insulation, conductor diameter 1.4mm, outer diameter 3.9mm, size source Multi-Contact FLEXI-xV 0.75 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, generated with kicad-footprint-generator Tantalum Capacitor SMD AVX-M (7260-20 Metric), IPC_7351 nominal, (Body size source: IPC-SM-782 page 76, https://www.pcb-3d.com/wordpress/wp-content/uploads/ipc-sm-782a_amendment_1_and_2.pdf), generated with kicad-footprint-generator Hirose DF11 through hole, DF13-10P-1.25DS, 10 Pins per row (https://datasheet.lcsc.com/lcsc/1811040204_JUSHUO-AFC07-S32FCC-00_C11061.pdf Omron FPC connector, 15 top-side contacts, 0.5mm pitch, SMT, https://www.te.com/commerce/DocumentDelivery/DDEController?Action=showdoc&DocId=Customer+Drawing%7F1734839%7FC%7Fpdf%7FEnglish%7FENG_CD_1734839_C_C_1734839.pdf%7F4-1734839-0 TE FPC connector, 05 top-side contacts, 1.0mm pitch, 1.0mm height, SMT, http://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=84953&DocType=Customer+Drawing&DocLang=English&DocFormat=pdf&PartCntxt=84953-4 TE FPC connector, 07 top-side contacts, 0.5mm pitch, SMT, https://www.te.com/commerce/DocumentDelivery/DDEController?Action=showdoc&DocId=Customer+Drawing%7F1734839%7FC%7Fpdf%7FEnglish%7FENG_CD_1734839_C_C_1734839.pdf%7F4-1734839-0 TE FPC connector, 17 top-side contacts, 1.0mm pitch, 1.0mm height, SMT, http://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=84952&DocType=Customer+Drawing&DocLang=English&DocFormat=pdf&PartCntxt=84952-4 TE FPC connector, 18 top-side contacts, 1.0mm pitch, 1.0mm height, SMT, http://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=84952&DocType=Customer+Drawing&DocLang=English&DocFormat=pdf&PartCntxt=84952-4 TE FPC connector, 25 bottom-side contacts, 1.0mm pitch, 1.0mm height, SMT, http://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=84953&DocType=Customer+Drawing&DocLang=English&DocFormat=pdf&PartCntxt=84953-4 TE FPC connector, 06 top-side contacts, 0.5mm pitch, SMT, https://www.te.com/commerce/DocumentDelivery/DDEController?Action=showdoc&DocId=Customer+Drawing%7F1734839%7FC%7Fpdf%7FEnglish%7FENG_CD_1734839_C_C_1734839.pdf%7F4-1734839-0 TE FPC connector, 12 bottom-side contacts 1.0mm pitch 1.0mm height SMT.

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