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Vertical Flat Package with Heatsink Tab, see https://ac-dc.power.com/sites/default/files/product-docs/topswitch-jx_family_datasheet.pdf Power Integrations E Package eSIP-7F Flat Package with Heatsink Tab, https://ac-dc.power.com/sites/default/files/product-docs/topswitch-jx_family_datasheet.pdf Power Integrations K Package PowerPAK SO-8 Single (https://www.vishay.com/docs/71655/powerpak.pdf, https://www.vishay.com/docs/72599/72599.pdf 16-Lead Plastic Small Outline (SO), see https://www.elpro.org/de/index.php?controller=attachment&id_attachment=339 SO, 4 Pin (https://toshiba.semicon-storage.com/info/docget.jsp?did=12884&prodName=TLP291), generated with kicad-footprint-generator Soldered wire connection with double feed through strain relief, for 4 times 2.5 mm² wires, reinforced insulation, conductor diameter 0.5mm, outer diameter 3.9mm, size source Multi-Contact FLEXI-E 1.0 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, generated with kicad-footprint-generator Mounting Hardware, inside through hole 2.25mm, height 6, Wuerth electronics 9775076960 (https://katalog.we-online.com/em/datasheet/9775076960.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py QFN, 16 Pin (https://www.haloelectronics.com/pdf/discrete-ultra-100baset.pdf), generated with kicad-footprint-generator XP_POWER IHxxxxDH DIP DCDC-Converter XP_POWER IAxxxxD, DIP, (https://www.xppower.com/pdfs/SF_IA.pdf), generated with kicad-footprint-generator JST XA series connector, S20B-PUDSS-1 (http://www.jst-mfg.com/product/pdf/eng/ePUD.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py Kionix LGA, 12 Pin (https://www.nxp.com/docs/en/data-sheet/MMZ09332B.pdf), generated with kicad-footprint-generator Resistor SMD 2512 (6332 Metric), 2.6mm thick, Vishay WKS2512, Terminal length (T) 2.21mm, 1 to something more finish, preferably without needing a separate dangling reverb tank? Incredibly tiny plate reverb with some kind of odd LFO. * 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 v1.0 Add CV (and knob) controlled glide to schematic 16c50fa0a8 Add pulldown resistors for reset debounce cap; formatting col_left = thickness * 2; right_rib_x = width_mm - h_margin; col_left = thickness * 1; h_wall(h=4, l=right_rib_x); // bottom horizontal rib // h_wall(h=4, l=right_rib_x); // middle horizontal rib h_wall(h=4, l=right_rib_x); // one more vertical to mount a circuit outside the full dev board (in some cases) Arduino + DAC https://www.youtube.com/watch?v=t3kUPjdiq0o for explainer https://drive.google.com/drive/folders/156nn9rClRLJplS4M46s56-Pibi86Z-Kp for schematics and .ino file uses an LM13700 OTA (operational transconductance amplifier) (~$1.50, uncommon, and DIP marked obsolete) and NE5532 (uncommon, 80¢ based on the left sub-panel right_rib_x = width_mm - hole_dist_side - thickness; // draw a "vertical" wall to mount a circuit board to module make_surface(filename, h) { } module cherry_mx_button() { union(){ cube([14,14,thickness]); // u[nits] function units_mm(u) = u * U; main synth_tools/PCB Notes.txt 17 lines e8295830c4 STLs, 10hp version, others schematics More experimentation with panel title fonts.

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