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BackCA3080 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 main 5a4e89eea6 Add position for resistor between coarse and +12V, value unknown c5e8dbdd1f Align panel to integer pseudo-origin, remove testing text, decrease title label font size to 9mm and align it precisely for repeatability b11a8d3187 Change transistor footprint to inline_wide, fix DRC ground plane 56529bef3a Updates from real TL0x4s d12ec1f19bbae8f01395e4c76a152d3d4ce7a3d4 created pull request synth_mages/MK_VCO#1 cfb5bfb128 Finish schematic, add PDF Features already done: Internal clock with manual control. Sequencer cascading to trigger a second sequencer's run, which then re-triggers the first. - Trigger out - could be other values, ceramic may work, test debouncing. Maybe enlarge footprint if needed. Subject: [PATCH 07/13] Update Schematics/schematic_bugs_v1.md Latest commits for file Schematics/SynthMages.pretty/Potentiometer_Alpha_RD901F-40-00D_Single_Vertical_CircularHoles_Shaft_Centered.kicad_mod Latest commits for branch panel_tweaking Add scad for v3.2 f33ea6a168329cd0061e01c376cbd377f46ddc60 @circuitlocution.com created pull request synth_mages/MK_SEQ#2 b77534e3fc Added schmancy pcb for v2 front panel design and includes 2.5mm centerward shift for input and output jacks 2eebdf7ecf Add four more switches/buttons, move LED drivers onto PCB added the once through idea with commentary by 496e3e3344 Correcting changed filename in .prl gets jiggy with PCB locator, 13 Pins (http://www.farnell.com/datasheets/2157639.pdf), generated with kicad-footprint-generator Capacitor SMD AVX-F (6032-20 Metric), IPC_7351 nominal, (Body size source: http://www.tortai-tech.com/upload/download/2011102023233369053.pdf), generated with kicad-footprint-generator Molex SlimStack Fine-Pitch SMT Board-to-Board Connectors, 502430-0820, 8 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xxx-dv-xx-xx-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-dv-footprint.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py DFN8 2x2, 0.5P; No exposed pad (https://www.infineon.com/cms/en/product/packages/PG-DSO/PG-DSO-20-85/ Infineon SO package 20pin with exposed pad Micrel MLF, 8 Pin (JEDEC MS-012AC, https://www.analog.com/media/en/package-pcb-resources/package/pkg_pdf/soic_narrow-r/r_16.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-139-02-xx-DV-PE-LC, 39 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xxx-dv-xx-xx-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-dv-footprint.pdf), generated with kicad-footprint-generator connector Molex KK-396 horizontal Molex Pico-Lock series connector, LY20-6P-DLT1, 3 Circuits (http://www.jae.com/z-en/pdf_download_exec.cfm?param=SJ038187.pdf), generated with kicad-footprint-generator JST PH series connector, S09B-ZESK-2D (http://www.jst-mfg.com/product/pdf/eng/eZE.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py VQFN, 46 Pin (http://www.ti.com/lit/ds/symlink/lp5036.pdf#page=59), generated with kicad-footprint-generator Resistor SMD 2816 (7142 Metric), square (rectangular) end terminal, IPC_7351 nominal with elongated pad for handsoldering. (Body size source: http://www.tortai-tech.com/upload/download/2011102023233369053.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py QFN, 32 Pin (https://www.nxp.com/docs/en/package-information/SOT358-1.pdf), generated with kicad-footprint-generator Capacitor SMD 0805 (2012 Metric), square (rectangular) end terminal, IPC_7351.
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