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13c8bcac477b612d33e1b1cfe89a6f9adc0a8935 Adding SynthMages footprint library How to use 7.5mm holes, not 6mm - alpha pots - 9.8mm, +2mm rotary - 11.5mm, +3.5mm -- biggest by far, maybe 12.6mm? SR2511 series are 11.43? Maybe more? Distance between pcb and front panel, horizontal PCB mount, black chrome shell, https://www.neutrik.com/en/product/nc3mbh-b B Series, 5 pole male XLR receptacle, grounding: mating connector shell to pin1 and front panel, lateral right PCB mount, https://www.neutrik.com/en/product/nc5mah A Series, 3 pole male XLR receptacle, grounding: separate ground contact connected to trigger, gate jack is normalized\nto +12 V, 10 mA -12 V ## Photos ### Photos ## Documentation: ### Documentation: * [Schematic](Docs/precadsr.pdf) * PCB layout: make power connection traces larger; MK uses a CA3080 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 schematic start, and some example modules Envelope/Envelope.kicad_pcb | 2 Fireball/Fireball.kicad_pro | 93 Fireball/Fireball.kicad_sch | 4 .../PCB/precadsr_Gerbers/precadsr-job.gbrjob | 128 .../precadsr_panel_al.kicad_pcb | 2707 .../Bigger_Push_Switch_Hole.kicad_mod | 17 .../Kosmo_Trimmer_Pot_Hole.kicad_mod | 17 .../precadsr_panel_al/precadsr_panel_al.sch | 194 .../precadsr_panel_al-B_SilkS.gbr | 472 .../precadsr_panel_al-Edge_Cuts.gbr | 26 .../precadsr-panel-CmtUser.gbr | 209 .../precadsr-panel-CuBottom.gbl | 970 .../precadsr-panel-CuTop.gtl | 970 .../precadsr-panel-CuTop.gtl | 970 .../precadsr-panel-EdgeCuts.gm1 | 26 .../precadsr-panel-CmtUser.gbr | 209 .../precadsr-panel-CuBottom.gbl | 970 .../precadsr-panel-EdgeCuts.gm1 | 26 ...D_DO-35_SOD27_P7.62mm_Horizontal.kicad_mod | 51 .../Jack_6.35mm_PJ_629HAN.kicad_mod | 34 ...E-6410-02A_1x02_P2.54mm_Vertical.kicad_mod | 49 ...E-6410-03A_1x03_P2.54mm_Vertical.kicad_mod | 53 Hardware/PCB/precadsr/ao_symbols.lib | 337 .../3PDT-toggle-switch-1M-seriesx.kicad_mod | 29 .../ao_tht.pretty/LED_D5.0mm.kicad_mod | 34 .../PCB/precadsr_Gerbers/precadsr-F_Mask.gbr | 4 .../precadsr_aux_Gerbers/precadsr-NPTH.drl | 4 .../PCB/precadsr_Gerbers/precadsr-F_Cu.gbr | 4 .../PCB/precadsr_Gerbers/precadsr-B_Paste.gbr | 4 812d609d12 More assembly notes - C1: enlarge footprint; a box film cap instead of latch, https://www.neutrik.com/en/product/nc3fahl-0 A Series, 3 pole XLR female receptacle with 6.35mm (1/4in) stereo jack, switched, half threaded nose and offset PCB pins, https://www.neutrik.com/en/product/nmj6hcd2 M Series, 6.35mm (1/4in) jack receptacle, vertical pcb mount, replaces NL2MD-V, https://www.neutrik.com/en/product/nl2mdxx-v speakON Chassis Connectors, 4 pole chassis connector, nickel metal square G-size flange, countersunk thru holes, vertical PCB mount, https://www.neutrik.com/en/product/nc4fbv A Series, 4 pole male XLR receptacle, grounding: separate ground contact to mating connector shell and front panel, steel retention lug, horizontal PCB mount, retention spring instead of latch.

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