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For 2020, 2025 and 2032 coincell batteries. Http://www.keyelco.com/product-pdf.cfm?p=798 Keystone type 103 battery holder Keystone type 107 battery holder Keystone SMT (Auto-In/Ultra-Low) Holder for 2032 Cell, 33.2 x 23.9mm, 2mm height above PCB, https://www.keyelco.com/userAssets/file/M65p4.pdf Keystone type 3034 coin cell vertical Cherry MX keyswitch 1.75u plate Cherry MX keyswitch 2.75u plate Cherry MX keyswitch 2.00u vertical PCB mount, https://www.neutrik.com/en/product/nc3mav-0 A Series, 5 pole female receptacle, grounding: separate ground contact to mating connector shell and front panel, horizontal PCB mount, https://www.neutrik.com/en/product/nc5mav B Series, 4 pole male XLR receptacle, grounding: without ground/shell contact, horizontal PCB mount, https://www.neutrik.com/en/product/nl2md-v speakON Chassis Connectors, 4 pole female XLR receptacle, grounding: mating connector shell and front panel: 9.8mm (alpha pots sliders: 3mm above panel, ample thunkicons: probably too short without extra spacers, use mini toggle pushbuttons: ample space above 11.75mm (existing 1p12t rotaries, use 11.25mm holes to PCB edge 15.979999999999999mm, see https://disti-assets.s3.amazonaws.com/tonar/files/datasheets/16730.pdf 37-pin D-Sub connector horizontal angled 90deg THT male pitch 2.77x2.84mm mounting holes 47.1mm, see https://disti-assets.s3.amazonaws.com/tonar/files/datasheets/16730.pdf 9-pin D-Sub connector horizontal angled 90deg THT female pitch 2.77x2.84mm pin-PCB-offset 14.56mm mounting-holes-distance 47.1mm mounting-hole-offset 47.1mm 44-pin D-Sub connector, horizontal/angled (90 deg), THT-mount, male, pitch 2.77x2.84mm, distance of mounting holes to PCB edge 7.4799999999999995mm, see https://disti-assets.s3.amazonaws.com/tonar/files/datasheets/16730.pdf 25-pin D-Sub connector, horizontal/angled (90 deg), THT-mount, male, pitch 2.77x2.84mm, pin-PCB-offset 14.56mm, distance of mounting holes 63.5mm, distance of mounting holes to PCB edge 9.12mm, see https://disti-assets.s3.amazonaws.com/tonar/files/datasheets/16730.pdf 15-pin D-Sub connector horizontal angled 90deg THT female pitch 2.77x2.84mm pin-PCB-offset 7.699999999999999mm mounting-holes-distance 25mm mounting-hole-offset 25mm 15-pin D-Sub connector horizontal angled 90deg THT male pitch 2.77x2.84mm pin-PCB-offset 14.56mm mounting-holes-distance 25mm mounting-hole-offset 25mm 15-pin D-Sub connector, horizontal/angled (90 deg), THT-mount, female, pitch 2.29x1.98mm, pin-PCB-offset 8.35mm, distance of mounting holes 47.1mm, distance of mounting holes to PCB for holding three chips (two 74s, one 72) Noise MK's S&H not strictly a noise and envelope generator synth module. Layout and panel are Kosmo format. * [Schematic](Docs/precadsr.pdf) * PCB layout: [front](Docs/precadsr_layout_front.pdf), [back](Docs/precadsr_layout_back.pdf * [How to use](Docs/use.md 96f746fa2d Final tweaks, version submitted to JLCPCB on 20240124 Final tweaks, version submitted to JLCPCB on 20240124 Experimenting with more panel layout ideas working_height = height - v_margin - title_font_size*1.5; saw_out = [output_column, bottom_row, 0]; fm_in = [first_col, first_row, 0]; c_tune = [second_col, third_row, 0]; fm_lvl = [h_margin+working_width/8, row_3, 0]; c_tune = [width_mm/2 - h_margin, top_row, 0]; f_tune = [h_margin+working_width/8, row_3, 0]; pwm_duty = [second_col, first_row, 0]; sync_in = [first_col, third_row, 0]; saw_out = [output_column, row_2, 0]; fm_lvl = [h_margin+working_width/8, row_3, 0]; cv_in_2b.

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