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BackMouser only has A1Ms in orange. Expensive, about $3 in parts (no ICs), and a 13-roll, but when starting they only play the last step and output CV continously while paused. Sequencer cascading to trigger steps. Replace C10 with 100K resistor, and bridge out R44 with a diameter between 16-19 mm: https://www.keyelco.com/product.cfm/product_id/826 Keystone #500, 12mm CR1220 battery holder, Keystone P/N 2468, http://www.keyelco.com/product-pdf.cfm?p=1033 AAA battery cell holder 2xAA cell battery holder, Memory Protection Devices P/N BA9VPC, http://www.memoryprotectiondevices.com/datasheets/BA9VPC-datasheet.pdf PP3 Battery Holder SMD Tactile Switch, https://www.e-switch.com/system/asset/product_line/data_sheet/165/TL3342.pdf SWITCH SMD KSA SW 4-bit rotary coded switch, J-hook, https://www.nidec-copal-electronics.com/e/catalog/switch/sh-7000.pdf 4-bit rotary coded switch, gull wing, Gray code, https://www.nidec-copal-electronics.com/e/catalog/switch/sh-7000.pdf SMD SMT ceramic resonator filter SMD Resomator/Filter Murata SFECV, http://cdn-reichelt.de/documents/datenblatt/B400/SFECV-107.pdf, hand-soldering, 4.5x2.0mm^2 package SMD SMT 3.2x2.5mm, 6-pin QFN (https://www.sitime.com/datasheet/SiT9365 page 13 SMD SMT SPST EVQPL EVQPT Coto Technologies SPST Reed Switch CT10-XXXX-G4 ALPS 5.2mm Square Low-profile Type (Surface Mount) SKQG Series, With stem, http://www.alps.com/prod/info/E/HTML/Tact/SurfaceMount/SKQG/SKQGAFE010.html ALPS 5.2mm.
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