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Previous module with lots of analog drum voices; based heavily on Moritz Klein's schematic, with features added from Skull and Circuit's VCA v1.3. 3D Printing/Panels/AD&D 1e spell names rendered as raster using Filmoscope Quentin Potentiometers: One potentiometer for internal clock rate. Binary files /dev/null and b/VCO_MANUAL_v2.pdf differ 500k Trimpot; tune to 1V out HALF Dot1 Dot2 Dot3 Dot4 Dot5 Dot6 Dot7 Dot8 Dot9 Dot10 Dot11 Dot12 Dot13 W1 L2 <-- CV In - ~27K to U3-8? No, transistors maybe activate? - Clock rate goes down when resistance goes up, opposite to expectation. Schematic fixes: - 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 - Don't put R8 so close to R26 D36/R47 too close Testing before powering up: Clock In - ~27K to U3-8? No, transistors maybe activate? Outs: Clock Out - Diode from rotary pin 13 - CV version maybe possible, but a bitmap generator is available for arbitrary text at 200-size from: https://www.myfonts.com/collections/quentin-font-urw?tab=individualStyles 3D Printing/Panels/BLADE BARRIER.png Normal file Unescape Hardware/PCB/precadsr_aux_Gerbers/precadsr-B_SilkS.gbr Normal file View File 3D Printing/Cases/Eurorack Modular Case/DSC03778.JPG Executable file → Normal file Unescape Hardware/PCB/precadsr_Gerbers/precadsr-PTH.drl Normal file Unescape // Width of module (HP) width = 17; // [1:1:84] // margins from edges h_margin = hole_dist_side + thickness; right_rib_x = width_mm - h_margin; // elevated sockets to fit in glide controls 53c46eece113c24bce671b9108c3f713b2229189 Final-ish tweaks Final-ish tweaks More mounting hole 4.3mm m4 din965 Mounting Hole 4.3mm, M4, DIN965 mounting hole 5.3mm no annular Mounting Hole 2.7mm, no annular, M5, ISO7380 mounting hole 5.3mm no annular Mounting Hole 6.4mm, no annular, M3, ISO14580 mounting hole 6.5mm no annular mounting hole 2.2mm m2 iso14580 Mounting Hole 2.7mm, M2.5, ISO14580 mounting hole 4.3mm no annular m5 Mounting Hole 4.3mm, no annular, M4, ISO7380 mounting hole 5.3mm m5 din965 Mounting Hole 5.3mm, no annular, M6, ISO7380 mounting hole position tweaks f6c7924538 Messing around with panel alignment before printing f6c7924538ef12da2abc179ebcc8f08e4164e698 main synth_tools/Schematics/SynthMages.pretty/eurorack_rail_hole.kicad_mod 24 lines Binary files /dev/null and b/Panels/Font files/futura medium bt.ttf and /dev/null differ QuentinEF.ttf Normal file Unescape Hardware/PCB/precadsr/ao_tht.pretty/Arduino_Nano.kicad_mod Normal file Unescape Hardware/PCB/precadsr/ao_tht.pretty/DIN5.kicad_mod Normal file View File Hardware/Panel/precadsr-panel-Gerbers/precadsr-panel.drl Normal file Unescape Schematics/SynthMages.pretty/Perfboard_4x12.kicad_mod Normal file View File Panels/luther_triangle_vco_quentin_v2.scad Normal file View File Hardware/PCB/precadsr_aux_Gerbers/precadsr-Edge_Cuts.gbr Normal file Unescape.

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