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A straightforward build: one op-amp, four transistors and some example modules Envelope/Envelope.kicad_pcb | 2 create mode 100644 Hardware/Panel/precadsr-panel/precadsr-panel.kicad_sch "Pots, switches, misc" plated through holes: ============================================================= T1 3.200mm 0.1260" (4 holes) T5 15.200mm 0.5984" (1 hole) Total plated holes count 16 Latest commits for branch schematic Merge pull request synth_mages/MK_VCO#7 7#Cumulative fixes from v1.1 74231bd333b049ab7b99365de62d937af76b0e42 Finish PCBs d74befe391233bd8b162f7f5705c277e04d9b135 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 More traces and vias, and net links Panels/FireballSpellVertSmall.png Normal file View File Datasheets/tl074.pdf Normal file Unescape Hardware/Panel/precadsr-panel/precadsr-panel.pretty/precadsr-panel-art.kicad_mod Normal file Unescape Hardware/PCB/precadsr/ao_tht.pretty/Potentiometer_Alpha_16mm_Single_Vertical.kicad_mod Normal file Unescape Schematics/SynthMages.pretty/SOCKET_3_PIN_HEADER_NORMAL.kicad_mod Normal file Unescape Hardware/Panel/precadsr_panel_al/fp-lib-table Normal file Unescape Schematics/SynthMages.pretty/SLIDE_POT_0547.kicad_mod Normal file View File Schematics/Enlarge/Enlarge.kicad_prl Normal file Unescape Hardware/Panel/precadsr-panel-Gerbers/precadsr-panel-SilkTop.gto Normal file Unescape Hardware/PCB/precadsr_Gerbers/precadsr-F_Cu.gbr Normal file Unescape Hardware/Panel/precadsr-panel-Gerbers/drill_report.rpt Normal file Unescape Hardware/Panel/precadsr_panel_al_Gerbers/precadsr_panel_al-F_Paste.gbr Normal file View File 3D Printing/Pot_Knobs/potknob_parametric.scad Executable file View File Panels/FireballSpell_Large_bw.png.svg Normal file View File 3D Printing/Cases/Eurorack Modular Case/DSC03778.JPG Executable file View File Hardware/Panel/precadsr_panel_al_Gerbers/precadsr_panel_al-NPTH.drl Normal file Unescape Schematics/SynthMages.pretty/SOCKET_3_PIN_HEADER_NORMAL.kicad_mod Normal file Unescape Schematics/SynthMages.pretty/Perfboard_4x12.kicad_mod Normal file View File Datasheets/2N3903-Motorola.pdf Executable file View File Images/precadsr-panel-art.png Normal file Unescape Fireball/Fireball.kicad_pro Normal file View File sr1_full.png Normal file View File 3D Printing/Pot_Knobs/pot_knob-6mm-clear.stl Executable file View File Docs/precadsr_layout_front.pdf Normal file View File 3D Printing/Cases/Eurorack 2-Row/eurorack_2row_power_supply_base.skp Executable file View File 3D Printing/Cases/Eurorack Modular Case History width = 17; // [1:1:84] left_rib_x = thickness * 1.2; right_rib_x = width_mm - h_margin; cv_in = [first_col, first_row, 0]; sync_in = [first_col, fourth_row, 0]; pwm_cv_lvl = [width_mm - h_margin - working_width/8, row_4, 0]; pwm_cv_lvl = [width_mm - h_margin - working_width/8, row_2, 0]; fm_lvl = [h_margin+working_width/8, row_3, 0]; c_tune = [second_col, fifth_row, 0]; pwm_duty = [second_col, second_row, 0]; //Third row interface placement saw_out = [third_col, fourth_row, 0]; triangle_out = [width_mm-h_margin-working_width/4, row_1, 0]; fm_pot = [input_column - h_margin/2, bottom_row, 0]; c_tune = [width_mm/2 + h_margin, top_row, 0]; f_tune = [width_mm/2 - h_margin, top_row, 0]; f_tune = [second_col, third_row, 0]; saw_out = [output_column, row_2, 0]; fm_lvl = [second_col, first_row, 0]; c_tune = [second_col.

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