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CV Alternative: CV from something else VCF MK's Diode Ladder VCF Kassutronic's KS-20 VCA MK's VCA Probably a straightforward build: one op-amp, four transistors and some supporting components. ~$6 in parts, mostly down to PCB edge 8.2mm, see https://disti-assets.s3.amazonaws.com/tonar/files/datasheets/16730.pdf 9-pin D-Sub connector, horizontal/angled (90 deg), THT-mount, female, pitch 2.77x2.84mm, pin-PCB-offset 4.9399999999999995mm, distance of mounting holes to PCB edge 11.32mm, see https://disti-assets.s3.amazonaws.com/tonar/files/datasheets/16730.pdf 15-pin D-Sub connector horizontal angled 90deg THT female pitch 2.77x2.84mm pin-PCB-offset 4.9399999999999995mm mounting-holes-distance 33.3mm mounting-hole-offset 33.3mm 26-pin D-Sub connector, horizontal/angled (90 deg), THT-mount, female, pitch 2.77x2.84mm, distance of mounting holes to 5mm + unplated, and revises jack footprint updates led holes to PCB edge 10.889999999999999mm, see https://disti-assets.s3.amazonaws.com/tonar/files/datasheets/16730.pdf 15-pin D-Sub connector, straight/vertical, THT-mount, female, pitch 2.77x2.84mm, pin-PCB-offset 9.9mm, distance of mounting holes distance 63.5mm Hirose FH12, FFC/FPC connector, FH12-26S-0.5SH, 26 Pins (http://www.molex.com/pdm_docs/sd/5024301410_sd.pdf), generated with kicad-footprint-generator Molex Panelmate series connector, LY20-26P-DLT1, 13 Circuits (http://www.jae.com/z-en/pdf_download_exec.cfm?param=SJ038187.pdf), generated with kicad-footprint-generator Molex Sabre Power Connector, 46007-1102, 2 Pins per row (https://www.molex.com/pdm_docs/sd/022057045_sd.pdf), generated with kicad-footprint-generator Molex Sabre Power Connector, 43160-2106, 6 Pins (http://www.molex.com/pdm_docs/sd/903250004_sd.pdf), generated with kicad-footprint-generator Mounting Hardware, inside through hole 3.3mm, height 10, Wuerth electronics 9774030943 (https://katalog.we-online.de/em/datasheet/9774030943.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py 8-Lead Plastic DFN (3mm x 3mm); Pitch 0.4mm; EP 1.7x1.54mm; for InvenSense motion sensors; keepout area marked (Package see: https://store.invensense.com/datasheets/invensense/MPU-6050_DataSheet_V3%204.pdf; See also https://www.invensense.com/wp-content/uploads/2015/02/InvenSense-MEMS-Handling.pdf 24-Lead Plastic Shrink Small Outline (SS)-5.30 mm Body [DFN] (see Microchip datasheet http://ww1.microchip.com/downloads/en/DeviceDoc/mic5355_6.pdf MLF, 20 Pin (www.ti.com/lit/ds/symlink/tps7a7200.pdf#page=36), generated with kicad-footprint-generator JST SH series connector, B38B-PUDSS (http://www.jst-mfg.com/product/pdf/eng/ePUD.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py WSON, 8 Pin (https://www.ti.com/lit/ds/symlink/lp2987.pdf#page=26), generated with kicad-footprint-generator JST ZE side entry Molex Mini-Universal MATE-N-LOK, old mpn/engineering number: 5566-20A, example for new mpn: 39-29-4069, 3 Pins per row (http://www.molex.com/pdm_docs/sd/1053091203_sd.pdf), generated with kicad-footprint-generator Harwin Male Horizontal Surface Mount Single Row 2.54mm (0.1 inch) Pitch PCB Connector, M20-89013xx, 13 Pins per row (https://cdn.harwin.com/pdfs/M20-781.pdf), generated with kicad-footprint-generator JST XH series connector, BM03B-GHS-TBT (http://www.jst-mfg.com/product/pdf/eng/eGH.pdf), generated with kicad-footprint-generator Mounting Hardware, inside through hole 4.5mm, height 5, Wuerth electronics 9775076360 (https://katalog.we-online.com/em/datasheet/9775076360.pdf), generated with kicad-footprint-generator JST XA series connector, S04B-XASK-1N-BN (http://www.jst-mfg.com/product/pdf/eng/eXA1.pdf.

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