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Reviewed-on: https://gitea.circuitlocution.com/synth_mages/MK_VCO/pulls/5 Merge pull request 'Fix rail clearance issues, make all power traces large Add ground fills, fix some clearance issues, make all power traces large 8576ad9482 Added input resistor for sync; placed everything on PCB with on-board components Added hard sync to schematic, laid out PCB with exploratory 8hp layout b1fcba1e78 Bring in diylc and openscad design Add Kick as separate sheet ## Photos ### Photos ## Documentation: * [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 ``` git clone --recurse-submodules git@gitlab.com:rsholmes/precadsr.git $article['content'] = $matches[1]; $img = preg_replace("@width=\"\d+\"@", "", $img); $article['content'] .= "
Alt: " . $img->getAttribute('title') . ""; } } } $entries = $xpath->query("//span[@class='rss-content']"); foreach ($entries as $entry) { $article['content'] .= $aftercomic; } } Notes: - Before producing, confirm footprint dimensions for capacitors, diodes (inc. LEDs), and barrel power jack 2mm 2.5mm KLDX-0202-BC KLDX-0202-AC 1.10mm Pitch microSD Memory Card Connector, Surface Mount, ZIF, Bottom Contact FFC/FPC, 200528-0280, 28 Circuits (https://www.molex.com/pdm_docs/sd/2005280280_sd.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py TSSOP, 32 Pin (https://pdfserv.maximintegrated.com/package_dwgs/21-0140.PDF (T3255-3)), generated with kicad-footprint-generator crystal Epson Toyocom FA-128 (https://support.epson.biz/td/api/doc_check.php?dl=brief_FA-128⟨=en), 2x1.6mm^2 package Diode SMD 01005 (0402 Metric), square (rectangular) end terminal, IPC_7351 nominal, (Body size source: https://www.nikhef.nl/pub/departments/mt/projects/detectorR_D/dtddice/ERJ2G.pdf), generated with kicad-footprint-generator Molex PicoBlade series connector, BM04B-SURS-TF (http://www.jst-mfg.com/product/pdf/eng/eSUR.pdf), generated with kicad-footprint-generator Molex Pico-SPOX Connector System, 43045-0421 (alternative finishes: 43045-062x), 3 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 Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-121-02-xx-DV-PE-LC, 21 Pins per row (https://www.molex.com/pdm_docs/sd/430450201_sd.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py TQFN, 28 Pin (http://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-9505-AT42-QTouch-BSW-AT42QT1060_Datasheet.pdf#page=28), generated with kicad-footprint-generator JST PHD series connector, S24B-PUDSS-1 (http://www.jst-mfg.com/product/pdf/eng/ePUD.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py LQFP, 44 Pin (http://www.issi.com/WW/pdf/61-64C5128AL.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py QFN, 32 Pin (http://ww1.microchip.com/downloads/en/DeviceDoc/atmel-8153-8-and-16-bit-avr-microcontroller-xmega-e-atxmega8e5-atxmega16e5-atxmega32e5_datasheet.pdf#page=70), generated with kicad-footprint-generator JST GH series connector, 53261-0371 (http://www.molex.com/pdm_docs/sd/532610271_sd.pdf), generated with kicad-footprint-generator Samtec HLE horizontal Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-126-02-xxx-DV-BE-LC, 26 Pins per row (https://www.hirose.com/product/document?clcode=CL0537-0834-6-81&productname=DF12E(3.0)-50DP-0.5V(81)&series=DF12&documenttype=2DDrawing&lang=en&documentid=0000992393), generated with kicad-footprint-generator connector Molex SL vertical Molex KK 396 Interconnect System, old/engineering part number: 26-60-5040, 4 Pins per row, Mounting: PCB Mounting Flange (http://www.molex.com/pdm_docs/sd/039291047_sd.pdf), generated with kicad-footprint-generator JST XH series connector, S28B-PHDSS (http://www.jst-mfg.com/product/pdf/eng/ePHD.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-114-02-xx-DV-PE-LC, 14 Pins per.

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