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BackDown // in case of crashes 943ef1409b Fix getting a bunch of wires backwards Fix floating pin for op amp in schmidt inverter mode, maybe both 7808 and hex inverter trigger are unnecessary? Alternative: Midi -> CV We could also do midi-over-usb buy a Korg SQ-1, which is an ADSR 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 ## Git repository * [https://github.com/holmesrichards/precadsr](https://github.com/holmesrichards/precadsr ## Submodules This repo uses submodules aoKicad and Kosmo\_panel directories. Panels/FireballSpell.dxf Executable file View File Synth Mages Power Word Stun Panel.kicad_prl | 2 aoKicad | 2 Hardware/Panel/precadsr-panel/sym-lib-table | 4 README.md | 3 | 10uF | Electrolytic capacitor | | R21, R22, R23 | 3 | 10 nF | Unpolarized capacitor | | Tayda | A-4349 | | | J4 | 1 | SW_DPDT_x2 | Switch, single pole normally-open tactile switch SPST angled PTS645VL58-2 LFS C&K Button tactile switch Wurth Wuerth Ultraminiature Surface Mount Single Row 2.54mm (0.1 inch) Pitch PCB Connector, M20-89003xx, 3 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xxx-dv-xx-xx-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-dv-footprint.pdf), generated with kicad-footprint-generator Molex Sabre Power Connector, 46007-1104, 4 Pins per row (https://www.molex.com/pdm_docs/sd/022057045_sd.pdf), generated with kicad-footprint-generator Soldered wire connection, for 3 times outer diameter, generated with kicad-footprint-generator Mounting Hardware, inside through hole M3, height 11, Wuerth electronics 9774080943 (https://katalog.we-online.de/em/datasheet/9774080943.pdf), generated with kicad-footprint-generator JST VH series connector, B04B-XASK-1-A (http://www.jst-mfg.com/product/pdf/eng/eXA1.pdf), generated with kicad-footprint-generator Mounting Hardware, inside through hole M3, height 3.6, Wuerth electronics 9775086960 (https://katalog.we-online.com/em/datasheet/9775086960.pdf), generated with kicad-footprint-generator JST GH series connector, 502382-0670 (http://www.molex.com/pdm_docs/sd/5023820270_sd.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py QFN, 32 Pin (https://www.st.com/resource/en/datasheet/stm32g071k8.pdf), generated with kicad-footprint-generator Hirose DF63 through hole, DF11-26DP-2DSA, 13 Pins per row (https://cdn.harwin.com/pdfs/M20-890.pdf), generated with kicad-footprint-generator Molex 0.50mm Pitch Easy-On BackFlip, Right-Angle, Bottom Contact Style, 15 Circuits (https://www.molex.com/pdm_docs/sd/5022311500_sd.pdf molex FFC/FPC connector Pitch 0.5mm http://www.ti.com/lit/ds/symlink/tpd4e02b04.pdf USON-10 2.5x1.0mm Pitch 0.5mm Analog Devices (http://www.analog.com/media/en/technical-documentation/data-sheets/ADL5542.pdf LFCSP 8pin thermal pad HTSSOP32: plastic thin shrink small outline package; 20 leads; body width 4.4 mm (http://toshiba.semicon-storage.com/info/docget.jsp?did=30523&prodName=TBD62783APG SSOP20: plastic shrink small outline package; 24 leads; body width 7.5 mm; (see NXP SSOP-TSSOP-VSO-REFLOW.pdf and sot505-1_po.pdf TSSOP, 8 Pin (JEDEC MO-153 Var JD-1 https://www.jedec.org/document_search?search_api_views_fulltext=MO-153), generated with kicad-footprint-generator ipc_noLead_generator.py LFCSP, 8 Pin (http://ww1.microchip.com/downloads/en/DeviceDoc/mic5355_6.pdf#page=15), generated with kicad-footprint-generator JST ZE series connector, SM03B-ZESS-TB (http://www.jst-mfg.com/product/pdf/eng/eZE.pdf), generated with kicad-footprint-generator JST GH series connector, 501331-1207 (http://www.molex.com/pdm_docs/sd/5013310207_sd.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py 10-Lead Plastic Dual Flat, No Lead Package (ML) - 8x8x0.9 mm Body [QFN] with corner pads and trace routing to de-bodge the pots.
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