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Back- MK uses a CA3080 OTA, an expensive and rare chip these days ($3/ea on amazon, maybe fakes) VCA MK's VCA Everything by Hagiwo (quantizer, filters, noisemakers, etc MIDI-to-CV, either over USB or directly over 5-pin DIN (with optoisolator Deleting the wiki page "Module Spellbook" cannot be undone. Continue? Fdd5744d78 Checkpoint after fixes but before shrinking boards Checkpoint after re-centering sliders, before removing redundant LED resistors next to transistors to save on panel wires Move LED resistors next to transistors to save on panel wires More traces and vias, and net links romps with traces, vias, and this is weird and easy to actuate, plus space between them //left_panel_spacing = left_panel_width / 3 + tolerance*8; echo("Left panel:", left_panel_width, " with spacing ", left_panel_spacing); right_panel_width = width_mm - hole_dist_side, hole_dist_top); cylinder(r=hole_r, h=thickness*2); echo("Putting a hole with radius: ", hole_r , " at ", hole_dist_side, height - rail_clearance - thickness*2 - 16.5/2; // 16.5 is the decade counter Bergman's 10-step sequencer (up to 10 Alternative: Midi -> CV Alternative: CV from something else VCF MK's Diode Ladder VCF ~$8 in parts, depending on PCB with exploratory 8hp layout Add schematic, start on PCB Added hard sync to schematic, laid out PCB with exploratory 8hp layout Schematics/Enlarge/Enlarge.kicad_prl | 10 nF ## Erratum C13 is marked on the mid surdos. * : trill, generally three very fast notes on updating the fireball for rev 2 beta by adding +5V, and both trigger/gate and CV lines? - 3 5mm LEDs -Consider: 1 simple on/off switch/button/knob/etc. - 2 x switching (normalling) stereo jack (T/TN/R/RN/S/SN), https://www.neutrik.com/en/product/nj6fd-v 6.35mm (1/4 in) Vertical Jack, 2 Poles (Mono / TS) | | | J10 | 1 | TL074 | Quad operational amplifier, DIP-14
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