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BackExpensive 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 811ef45c764021f623b8bb59234df1314fce4e91 12V, -12V and ground needed, probably up to 1amp - maybe not as efficient as a result of switching to pcb-mounted panel components version
main VCA/Panels/dual_vca.scad 393 lines $fn=FN; footprint_depth = .25; //non-printing, barely-visible outline of component footprints width = 17; // [1:1:84] // margins from edges h_margin = hole_dist_side + thickness; output_column = width_mm - thickness*2; // draw a "vertical" wall to mount a circuit board to, dead center v_wall(h=4, l=top_row-rail_clearance*2-thickness-15); // PCB holder main MK_VCO/Panels/Font files/futura medium condensed bt.ttf differ Binary files a/Schematics/Fireball_VCO.pdf and b/Schematics/Fireball_VCO.pdf differ main MK_VCO/Fireball/Fireball VCO saw wave core.circuitjs.txt MSD: mid surdo BSD: back surdo (L for low, H for high) R/L: accented note (right/left hand suggested * : trill, generally three very fast notes on updating the fireball for rev 2 beta edits README.md file again 8976a63dc0 edits README.md file 666c48f795 adds README.md file again 605f29538db81c6c2eb02428332e653ea5ee7e41 edits README.md file 666c48f795 adds README.md file again README.md | 1 | Conn_01x02 | SIP socket, 2.54 mm, 1x10 Pin socket, 2.54 mm, 1x7 | | S2 | 1 | 1uF | Unpolarized capacitor | | | | Tayda | A-559 | | | | C9 | 4 | 100 nF | Unpolarized capacitor | | | | | J9 | 1 .- README.md create mode 100644 Hardware/PCB/precadsr/ao_tht.pretty/Potentiometer_Bourns_3296W_Vertical_screw_centered.kicad_mod delete mode.
- (stun Prismatic Spray / wall / Sphere.