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7.8503962" d="m 1.8897644,26.237798 -1.65354393,-3e-6" d="m 0.39370092,26.040948 v 0.19685" d="m -6.7913424,12.992133 h -0.19685" d="m 2.9527508,8.8202247 v 0.07874" d="m -2.5196841,2.5590618 h -0.07874" d="M -4.4488226,2.4606366 V 2.6574871" d="m -4.3503976,2.5590618 h -0.19685" d="m -6.8897674,12.893708 v 0.19685" d="m -7.2007864,2.2480373 h 0.622047 V 7.200788 H 2.3346394 2.1692854,7.0433077 Z" d="m 2.1692865,8.5472429 h 0.622047 v 0.6220475 h -0.456693 -0.165354,-0.1574803 z" style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:0.194444px;font-family:Limelight;-inkscape-font-specification:'Limelight, Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-feature-settings:normal;text-align:center;writing-mode:lr-tb;text-anchor:middle;fill:#000000;stroke-width:0.0104167">KASSU / AO 77735c00cc3285131373f5cfc61b82eab5963d12 Update README.md f0ccd475bcae4d90f684767b57611a775351886d Update README.md 5505000471ab249f70d985a8f814bce077fb47b2 Update README.md 40588ba725f2f6c7240cc5d95c2a8af539e27e15 Update README.md 3d0ca7fdf6e2ad8d7864221e585c668e46544055 Update README.md * [Schematic](Docs/precadsr.pdf) * PCB layout: make power connection traces larger; MK uses a CA3080 OTA, an expensive and rare chip these days ($3/ea on amazon, maybe fakes) VCA MK's VCA Probably a straightforward build: one op-amp, four transistors and some example modules schematic start, and some example modules schematic start, and some supporting components. ~$6 in parts, depending on exact order number), See: http://katalog.we-online.de/em/datasheet/6941xx301002.pdf Compact Flash Card connector, polarization inverse (https://multimedia.3m.com/mws/media/22424O/3mtm-cf-card-header-type-i-low-profile-surface-mount-ts0747.pdf Compact Flash Card connector, normal polarization (https://multimedia.3m.com/mws/media/22424O/3mtm-cf-card-header-type-i-low-profile-surface-mount-ts0747.pdf SD, SMD, reverse on-board, right-angle, push-pull (https://www.hirose.com/product/en/download_file/key_name/DM3AT-SF-PEJM5/category/Drawing%20(2D)/doc_file_id/44099/?file_category_id=6&item_id=06090031000&is_series= Micro SD, SMD, top-mount, push-push (https://www.hirose.com/product/document?clcode=CL0609-0004-8-82&productname=DM1AA-SF-PEJ(82)&series=DM1&documenttype=2DDrawing&lang=en&documentid=0000915301 Hirose FH41, FFC/FPC connector, FF0841SA1, 41 Circuits (http://www.molex.com/pdm_docs/sd/5022504191_sd.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-141-02-xxx-DV-BE-A, 41 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xx-dv-xe-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-thru.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-144-02-xx-DV-PE-LC, 44 Pins (http://www.molex.com/pdm_docs/sd/5024301410_sd.pdf), generated with kicad-footprint-generator Molex 734 Male header (for PCBs); Angled solder pin 1 x 1 mm, 734-141 , 11 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xx-dv-xe-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-thru.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-107-02-xxx-DV-LC, 7 Pins per row (https://www.hirose.com/product/document?clcode=CL0537-0694-9-81&productname=DF12C(3.0)-50DS-0.5V(81)&series=DF12&documenttype=2DDrawing&lang=en&documentid=0000994748), generated with kicad-footprint-generator ipc_gullwing_generator.py SOIC, 28 Pin (JEDEC MO-241/VAC, https://assets.nexperia.com/documents/package-information/SOT764-1.pdf), generated with kicad-footprint-generator JST EH series connector, 505405-1570 (http://www.molex.com/pdm_docs/sd/5054050270_sd.pdf), generated with kicad-footprint-generator Hirose FH12, FFC/FPC connector, FH12-22S-0.5SH, 22 Pins per row (http://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=82181_SOFTSHELL_HIGH_DENSITY&DocType=CS&DocLang=EN), generated with kicad-footprint-generator Molex PicoBlade Connector System, 5267-11A, 11 Pins per row (http://www.molex.com/pdm_docs/sd/431605304_sd.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py TQFN, 20 Pin (http://ww1.microchip.com/downloads/en/PackagingSpec/00000049BQ.pdf#page=276), generated with kicad-footprint-generator ipc_noLead_generator.py QFN, 24 Pin (https://www.jedec.org/standards-documents/docs/mo-142-d variation DC), generated with kicad-footprint-generator JST SH series connector, S03B-XASK-1 (http://www.jst-mfg.com/product/pdf/eng/eXA1.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py TSOP-I, 24 Pin (JEDEC MO-153 Var JD-1 https://www.jedec.org/document_search?search_api_views_fulltext=MO-153), generated with kicad-footprint-generator Resistor SMD 1210 (3225 Metric), square (rectangular) end terminal, IPC_7351 nominal with elongated pad for handsoldering. (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 Soldered wire connection with double feed through strain relief, for 3 times outer.

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