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Uno) + MCP4725 (DAC). ** https://hkadesign.org.uk/monotronkb.html for yet another fairly simple one, using Arduino (nano or uno) + MCP4725 (DAC). ** https://hkadesign.org.uk/monotronkb.html for yet another fairly simple one, using Arduino (nano or uno) + MCP4725 (DAC). ** https://hkadesign.org.uk/monotronkb.html for 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 Kassutronic's KS-20 https://kassu2000.blogspot.com/2019/07/ks-20-filter.html ** uses an LM13700 OTA (operational transconductance amplifier) (~$1.50, uncommon, and DIP marked obsolete) and NE5532 (uncommon, 80¢ based on either internal or external clock sources cycle between 0v and 5v max // gate out // round shaft hole cylinder(r=shaft_radius,h=shaft_height, $fn=shaft_smoothness); if(shaft_is_flatted == true } module knurled_finish(ord, ird, lf, sh, fn, rn) { for(j=[0:rn-1]) assign(h0=sh*j, h1=sh*(j+1/2), h2=sh*(j+1)) { for(i=[0:fn-1]) assign(lf0=lf*i, lf1=lf*(i+1/2), lf2=lf*(i+1)) { polyhedron( points=[ [ 0,0,h0], [ ord*cos(lf0), ord*sin(lf0), h0], [ ird*cos(lf0), ird*sin(lf0), h1], [ ird*cos(lf2), ird*sin(lf2), h1], [ ird*cos(lf2), ird*sin(lf2), h1], [ 0,0,h2], Created on Tue Mar 5 20:19:51 2024 Copper Layer Stackup: T5 15.200mm 0.5984" (1 hole) T3 7.000mm 0.2756" (6 holes) T4 10.000mm 0.3937" (4 holes) (with 4 slots T2 5.000mm 0.1969" (1 hole Total plated holes count 16 ============================================================= Total unplated holes count 16 Not plated through holes are merged with plated holes count 0 Minor layout tweaks merged pull request 'Finish schematic, add PDF Finish schematic, add PDF Features already done: Internal clock with manual control. Clock in socket with 80 contacts AT ISA 16 bits Bus Edge Connector BUS ISA AT Edge connector PCI bus Edge Connector Mini-PCI Express bus connector (https://s3.amazonaws.com/fit-iot/download/facet-cards/documents/PCI_Express_miniCard_Electromechanical_specs_rev1.2.pdf#page=11 Mini-PCI Express bus connector (https://s3.amazonaws.com/fit-iot/download/facet-cards/documents/PCI_Express_miniCard_Electromechanical_specs_rev1.2.pdf#page=11 Mini-PCI Express bus connector half size with clips (https://s3.amazonaws.com/fit-iot/download/facet-cards/documents/PCI_Express_miniCard_Electromechanical_specs_rev1.2.pdf#page=25 PCIexpress Bus Edge Connector x1 http://www.ritrontek.com/uploadfile/2016/1026/20161026105231124.pdf#page=70 Highspeed card edge card connector socket for 1.57mm PCBs, vertical, alignment pins (source: https://suddendocs.samtec.com/prints/hsec8-1xxx-xx-xx-dv-x-xx-footprint.pdf 0.8 mm Highspeed card edge connector for PCB's with 05 contacts (not polarized Highspeed card edge connector for 1.6mm PCB's with 05 contacts (polarized Highspeed card edge connector for 2.4mm PCB's with 20 contacts (not polarized Highspeed card edge connector for 2.4mm.

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