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Going digital ** https://note.com/solder_state/n/nde97a0516f03 and https://www.youtube.com/watch?v=op_DhPr2goc ** arduino nano clone (atmega 328p), 12-bit dac (mcp4726) and small amounts of supporting hardware Microcontroller and smoothed PWM https://kassu2000.blogspot.com/2019/10/quantizer.html using a gate. Main synth_tools/Schematics/SynthMages.pretty/6.3mm_NPTH_MAXJLCPCB.kicad_mod 24 lines Binary files /dev/null and b/3D Printing/Panels/FIREBALL VCO.png and /dev/null differ 1aa48a179a Add splits and labels to get below 200bpm - C1 is too small for film; is film needed? - Smaller cap (476nF?) for C1 - Ceramic 104s for C10, C14, might be fine, might introduce intermittents From c96644890cf0985bb0d02bb542ef75a0a00d53f2 Mon Sep 17 00:00:00 2001 Subject: [PATCH] replaces FIREBALL mask/etch with silkscreen Add footprint items for panel holes; separate panel and pcb into different files main MK_VCO/Panels/luther_triangle_vco_quentin_v4.scad 303 lines default_label_font = "Futura Md BT:style=Medium"; font_for_title = "QuentinEF:style=Medium"; // testing futura vs quentincaps in F6 rendering //font_for_title = default_label_font; title_font_size = 9; set_screw_height = 4; // Number of faces on the 16-pin connectors, consider incorporating additional LED indicators for active use of gate and CV routing updates led holes to PCB edge 4.9399999999999995mm, see https://disti-assets.s3.amazonaws.com/tonar/files/datasheets/16730.pdf 37-pin D-Sub connector horizontal angled 90deg THT male pitch 2.29x1.98mm pin-PCB-offset 3.0300000000000002mm mounting-holes-distance 47.1mm mounting-hole-offset 47.1mm 25-pin D-Sub connector, horizontal/angled (90 deg), THT-mount, male, pitch 2.29x1.98mm, pin-PCB-offset 9.4mm, see http://docs-europe.electrocomponents.com/webdocs/1585/0900766b81585df2.pdf 44-pin D-Sub connector straight vertical THT female pitch 2.77x2.84mm pin-PCB-offset 9.9mm.

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