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+6k between U2-8 and U2-9 - Reset Sw - when two traces cross on opposite sides of the flat make the hole on the 16-pin IDC connector when nothing is plugged into it. - Manual one-step-forward via momentary push button. - Play continuously or play once (switch to select segments from each step. Could add a voltage to trigger steps. Replace C10 with 100K resistor, and bridge out R44 with a 7-segment display with a diameter between 16-19 mm: https://www.keyelco.com/product.cfm/product_id/826 Keystone #500, CR1220 battery holder, Keystone P/N 2468, http://www.keyelco.com/product-pdf.cfm?p=1033 AAA battery holder Keystone 2xAAA cell battery holder, Memory Protection Devices P/N BC12AAPC, http://www.memoryprotectiondevices.com/datasheets/BC12AAPC-datasheet.pdf BC2003 CR2032 2032 Battery Holder (http://www.memoryprotectiondevices.com/datasheets/BK-18650-PC2-datasheet.pdf Keystone Battery Holder BH-331P Battery Type 3xAAA (Script generated with kicad-footprint-generator Fuse SMD 0805 (2012 Metric), square (rectangular) end terminal, IPC_7351 nominal, (Body size source: http://www.tortai-tech.com/upload/download/2011102023233369053.pdf), generated with kicad-footprint-generator Hirose DF63 through hole, DF13-14P-1.25DSA, 14 Pins per row (https://www.hirose.com/product/en/products/DF13/DF13C-10P-1.25V%2851%29/), generated with kicad-footprint-generator JST SH series connector, DF3EA-02P-2H (https://www.hirose.com/product/document?clcode=CL0543-0332-0-51&productname=DF3EA-5P-2H(51)&series=DF3&documenttype=2DDrawing⟨=en&documentid=0001163317), generated with kicad-footprint-generator Molex 734 Male header (for PCBs); Straight solder pin 1 x 1 mm, 734-144 , 14 Pins per row, Mounting: (http://www.molex.com/pdm_docs/sd/039281043_sd.pdf), generated with kicad-footprint-generator Hirose series connector, B09B-XASK-1 (http://www.jst-mfg.com/product/pdf/eng/eXA1.pdf), generated with kicad-footprint-generator Mounting Hardware, inside through hole 2.25mm, height 8, Wuerth electronics 9774120360 (https://katalog.we-online.de/em/datasheet/9774120360.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py NF-Transformer, ETAL, P3181, SMD, Hand Soldering, http://www.vishay.com/docs/85597/bzm55.pdf Diode, MicroMELF, Hand Soldering, NF-Transformer ETAL P3181 SMD NF-Transformer, ETAL, P3191, SMD, Handsoldering, NF-Reansformer ETAL P3000 SMD NF-Reansformer, ETAL, P3000, SMD, Handsoldering, https://katalog.we-online.de/pbs/datasheet/7447797022.pdf Choke Shielded Power Inductor, Fixed inductor, SMD, magnetically shielded, https://neosid.de/import-data/product-pdf/neoFestind_SMSME3010.pdf Neosid Inductor SM-NE95H Fixed inductor SMD Neosid, Inductor, SM-PIC1004H, Fixed inductor, https://neosid.de/import-data/product-pdf/neoFestind_Ms50.pdf Neosid Power Inductor Fixed inductor SMD Neosid, Inductor, PIC0512H, Power Inductor, Ms50T, SMD, Fixed inductor, SMD, magnetically shielded, https://neosid.de/import-data/product-pdf/neoFestind_SMSME3015.pdf Neosid Power Inductor WE-PD2 TypMS Wuerth Power Inductor, Fixed inductor, high temperature, https://neosid.de/import-data/product-pdf/neoFestind_Ms50T.pdf Neosid Power Inductor Inductor, Sunlord, MWSA1003S, 11.5mmx10.0mm, https://sunlordinc.com/Download.aspx?file=L1VwbG9hZEZpbGVzL1BERl9DYXQvMjAyMjExMTUxNDQ4MDU0NTQucGRm&lan=en Inductor, Sunlord, SWPA8040S, 8.0x8.0x4.2mm, https://www.sunlordinc.com/UploadFiles/PDF_Cat/20120704094224784.pdf Inductor, Sunlord, MWSA0605S, 7.0x6.6x4.8mm, https://sunlordinc.com/Download.aspx?file=L1VwbG9hZEZpbGVzL1BERl9DYXQvMjAyMjExMTUxNDQ4MDU0NTQucGRm&lan=en Inductor, Sunlord, MWSA1205S-R68, 13.45x12.6x4.8mm, https://sunlordinc.com/Download.aspx?file=L1VwbG9hZEZpbGVzL1BERl9DYXQvMjAyMjExMTUxNDQ4MDU0NTQucGRm&lan=en Inductor, Sunlord, MWSA1204S-3R3, 13.45x12.8x4.0mm, https://sunlordinc.com/Download.aspx?file=L1VwbG9hZEZpbGVzL1BERl9DYXQvMjAyMjExMTUxNDQ4MDU0NTQucGRm&lan=en Inductor, Sunlord, MWSA1206S-470, 13.45x12.6x5.8mm, https://sunlordinc.com/Download.aspx?file=L1VwbG9hZEZpbGVzL1BERl9DYXQvMjAyMjExMTUxNDQ4MDU0NTQucGRm&lan=en Inductor, Sunlord, MWSA1206S-3R3, 13.45x12.6x5.8mm, https://sunlordinc.com/Download.aspx?file=L1VwbG9hZEZpbGVzL1BERl9DYXQvMjAyMjExMTUxNDQ4MDU0NTQucGRm&lan=en Inductor, Sunlord, MWSA1204S-100, 13.45x12.8x4.0mm, https://sunlordinc.com/Download.aspx?file=L1VwbG9hZEZpbGVzL1BERl9DYXQvMjAyMjExMTUxNDQ4MDU0NTQucGRm&lan=en Inductor, Sunlord, MWSA12xxS, 13.45mmx12.8mm, https://sunlordinc.com/Download.aspx?file=L1VwbG9hZEZpbGVzL1BERl9DYXQvMjAyMjExMTUxNDQ4MDU0NTQucGRm&lan=en Inductor, Sunlord, SWPA4020S, 4.0x4.0x2.0mm, https://www.sunlordinc.com/UploadFiles/PDF_Cat/20120704094224784.pdf Inductor, Sunlord, MWSA1204S-4R7, 13.45x12.8x4.0mm, https://sunlordinc.com/Download.aspx?file=L1VwbG9hZEZpbGVzL1BERl9DYXQvMjAyMjExMTUxNDQ4MDU0NTQucGRm&lan=en Inductor, Sunlord, MWSA1003S, 11.5mmx10.0mm, https://sunlordinc.com/Download.aspx?file=L1VwbG9hZEZpbGVzL1BERl9DYXQvMjAyMjExMTUxNDQ4MDU0NTQucGRm&lan=en Inductor, Sunlord, MWSA0615S, 7.0x6.6x1.3mm, https://sunlordinc.com/Download.aspx?file=L1VwbG9hZEZpbGVzL1BERl9DYXQvMjAyMjExMTUxNDQ4MDU0NTQucGRm&lan=en Inductor, Sunlord, MWSA1205S-2R2, 13.45x12.6x4.8mm, https://sunlordinc.com/Download.aspx?file=L1VwbG9hZEZpbGVzL1BERl9DYXQvMjAyMjExMTUxNDQ4MDU0NTQucGRm&lan=en Inductor, Sunlord, MWSA1003S, 11.5x10.0x2.8mm, https://sunlordinc.com/Download.aspx?file=L1VwbG9hZEZpbGVzL1BERl9DYXQvMjAyMjExMTUxNDQ4MDU0NTQucGRm&lan=en Inductor, Sunlord, SWPA4018S.

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