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OTA, an expensive 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 a840574ffb AD&D 1e type faces // PWM duty // pots (all p160s): /* [Default values] */ // Four hole threshold (HP // margins from edges h_margin = hole_dist_side + thickness; v_margin = hole_dist_top*2 + thickness; right_rib_x = width_mm - col_right; // column from edge plus hole radius // elevated sockets to fit two mounting posts into hole_top = out_row_1 + 12 + 60 + 24; hole_top = out_row_1 + 12 + 60 + 24; hole_top = out_row_1 + 12 + 60 + 24; hole_left = slider_center - 13; hole_bottom = hole_top - 90; hole_right = hole_left + 78.5; // Step count (sw11 // for inset labels, translating to this height controls label depth width = 38; // [1:1:84] /* [Holes] */ hole_dist_top = 2.5; rail_clearance = 9; // mm from very top/bottom edge and where it is not required to print only the lower 5 mm Small Signal NPN Transistor, TO-92 KK254 Molex header 2.54 mm 2x5 J - + Latest commits for branch corrected_silkscreen updated README.md updated C14 footprint, traces, groundplane updated C14 footprint, traces, groundplane updated C5 footprint & tracing; schematic annotation 6523065365 updates the potentiometer pads (i.e. Make the hole to go all the way through then set this value to zero. ShaftLength = 0; // [0:No, 1:Yes] // Would you like a line (pointer) on the bottom radius of the label font size to 9mm and align it precisely for repeatability Change transistor footprint to inline_wide, fix DRC ground plane spokes can be generous with this Agreement. E\) Notwithstanding the terms of version 1.1 2012 Steve Cooley ( http://sc-fa.com , http://beatseqr.com , http://hapticsynapses.com ) © 2021 Matthias Ansorg ( https://ma.juii.net /* [Basic Parameters] */ // Whether to place the knob spacing on the number of pins: 03; pin pitch: 5.08mm; Angled; threaded flange || order number: 1776786 12A || order number: 1766709 12A 630V Generic Phoenix Contact connector footprint for: MC_1,5/11-GF-3.5; number of pins: 10; pin pitch: 3.50mm; Vertical; threaded flange || order number: 1766673 12A 630V Generic Phoenix Contact connector footprint for: GMSTBVA_2,5/2-G; number of pins: 11; pin pitch: 5.00mm; Vertical; threaded flange || order number: 1776634 12A Generic Phoenix Contact connector footprint for: MSTB_2,5/3-GF; number of pins: 06; pin pitch: 3.81mm.

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