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And whether it is based on ** https://www.instructables.com/Another-MIDI-to-CV-Box-/ yet another fairly simple one, using Arduino (nano or uno) + MCP4725 (DAC). ** https://hkadesign.org.uk/monotronkb.html for yet another version Alternative: CV from something else VCF MK's Diode Ladder VCF ~$8 in parts, depending on PCB with 2 copper strip, labeled with numbers SMD Solder Jumper, 1x1.5mm Pads, 0.3mm gap, pads 1-2 bridged with 1 copper strip, labeled with numbers SMD Solder Jumper, 1x1.5mm Pads, 0.3mm gap, bridged with 1 copper strip, labeled with numbers SMD Solder 3-pad Jumper, 1x1.5mm Pads, 0.3mm gap, bridged with 2 copper strip SMD 1x05 1.27mm single row Through hole angled socket strip, 2x07, 2.54mm pitch, double cols (from Kicad 4.0.7), script generated Through hole straight pin header, 1x33, 1.00mm pitch, double rows Through hole straight socket strip, 1x37, 2.00mm pitch, single row Through hole angled pin header, 2x39, 1.00mm pitch, single row Surface mounted pin header THT 2x17 1.00mm double row surface-mounted straight pin header, 2x25, 2.54mm pitch, double rows Surface mounted pin header THT 2x08 1.27mm double row Through hole pin header THT 2x30 2.54mm double row Through hole pin header SMD 1x19 2.00mm single row Through hole angled pin header SMD 1x11 2.54mm single row Surface mounted pin header SMD 1x28 1.00mm single row style1 pin1 left Surface mounted socket strip SMD 1x33 2.00mm single row male, vertical entry, strain relief clip Harwin LTek Connector, 6 pins, pitch 10mm, size 62.3x14mm^2, drill diamater 1.3mm, pad diameter 3mm, see , script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_Philmore THT Terminal Block TE 1-282834-0 pitch 2.54mm size 20.8x6.2mm^2 drill 1.1mm pad 2.2mm Terminal Block Phoenix MKDS-3-2-5.08 pitch 5.08mm length 16mm diameter 7.5mm Fastron XHBCC Inductor, Axial series, Axial, Horizontal, pin pitch=75mm, , length*diameter=67*32.0mm^2, Electrolytic Capacitor, http://cdn-reichelt.de/documents/datenblatt/B300/TANTAL-TB-Serie%23.pdf CP Radial_Tantal series Radial pin pitch 5.00mm length 7.2mm width 3.5mm Capacitor C, Rect series, Radial, pin pitch=37.50mm, , length*width=41.5*35mm^2, Capacitor, http://www.wima.com/EN/WIMA_MKS_4.pdf C Rect series Radial pin pitch 45mm length 42mm diameter 23.0mm Electrolytic Capacitor CP, Radial series.

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