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Inverter, maybe for stability? 10-step mode is ~$16-20 in parts, needing only one tl074 and support components, so tiny PCB should be possible, too * Manual trigger * See manual step (featuring debouncing!), sequencer cascading, basic glide (for portamento), attack decay sustain release 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) * [BOM](Docs/precadsr_bom.md) * [Build notes](Docs/build.md) How to use Latest commits for file Schematics/SynthMages.pretty/Perfboard_2x12.kicad_mod Latest commits for file Schematics/SynthMages.pretty/Perfboard_4x12.kicad_mod // Diameter of the indenting cones. [mm] // -------------------------------------- // Whether to create holes for a single 0.75 mm² wires, basic insulation, conductor diameter 1.7mm, outer diameter 4.4mm, size source Multi-Contact FLEXI-E 0.75 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, generated with kicad-footprint-generator Tantalum Capacitor SMD Kemet-A (3216-18 Metric), IPC_7351 nominal, (Body size source: IPC-SM-782 page 76, https://www.pcb-3d.com/wordpress/wp-content/uploads/ipc-sm-782a_amendment_1_and_2.pdf), generated with kicad-footprint-generator JST PHD series connector, 53398-0471 (http://www.molex.com/pdm_docs/sd/533980271_sd.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py 6-pin SOT-23 package, Handsoldering, http://www.analog.com/media/en/package-pcb-resources/package/pkg_pdf/sot-23rj/rj_8.pdf SOT-143R, reverse pinning, https://www.nxp.com/docs/en/package-information/SOT143R.pdf SOT-143R, reverse pinning, Handsoldering, https://www.nxp.com/docs/en/package-information/SOT143R.pdf module CMS SOT223 8 pins, pitch 3.5mm, size 31.5x7.6mm^2, drill diamater 0.7mm, pad diameter 2.5mm, hole diameter 1.6mm Diode, DO-34_SOD68 series, Axial, Vertical, pin pitch=5.08mm, , length*diameter=9.53*5.21mm^2, , http://www.diodes.com/_files/packages/DO-201.pdf Diode DO-201 series Axial Vertical pin pitch 2.54mm size 23.3x6.2mm^2 drill 1.1mm pad 2.2mm Terminal Block WAGO 804-308, 45Degree (cable under 45degree), 5 pins, pitch 10mm, size 35x8.1mm^2, drill diamater 1.4mm, pad diameter 2.5mm, see http://cdn-reichelt.de/documents/datenblatt/C151/RND_205-00078_DB_EN.pdf, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_RND THT terminal block Metz Connect Type059_RT06304HBWC pitch 3.5mm size 36x8.3mm^2 drill 1.3mm pad 2.5mm.

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