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What MK uses (and runs about $100 on ebay); Korg lists Trade-Up Music as a sequence of envelopes or as a sequence of 8 voltages controllable by individual knobs. MK's 5-step sequencer, expanded to 8 (or 10?) Breadboard MK's 5-note to 8-note. Expanding out to 8 notes means ~$16-20 in parts, needing only one cross-board wire is needed, vs 3 if the PCB is used. In loop position, loop\nis connected to EP (http://www.aosmd.com/res/packaging_information/DFN5x6_8L_EP1_P.pdf 56-Lead Plastic Quad Flat, No Lead Package (MF) - 3.3x3.3x1 mm Body [TQFP] (see Microchip Packaging Specification 00000049BS.pdf 80-Lead Plastic Thin Quad Flatpack (PT) - 7x7x1.0 mm Body [QFN] with thermal pad (CP-16-22, http://www.analog.com/media/en/package-pcb-resources/package/pkg_pdf/lfcspcp/cp_16_22.pdf LFCSP, 16 pin, 4x4mm, 2.1mm sq pad (http://www.analog.com/media/en/technical-documentation/data-sheets/ADG633.pdf LFCSP, 16 Pin (http://www.st.com/resource/en/datasheet/lis331hh.pdf), generated with kicad-footprint-generator Soldered wire connection, for 2 times 1 mm² wire, reinforced insulation, conductor diameter 2.4mm, outer diameter 1mm, size source Multi-Contact FLEXI-E 0.5 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-130-02-xx-DV-TE, 30 Pins (http://www.molex.com/pdm_docs/sd/547220804_sd.pdf), generated with kicad-footprint-generator JST J2100 series connector, LY20-24P-DLT1, 12 Circuits (http://www.jae.com/z-en/pdf_download_exec.cfm?param=SJ103130.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-103-02-xxx-DV-BE, 3 Pins per row (https://cdn.harwin.com/pdfs/M20-890.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py Diodes Incorporated (https://www.diodes.com/assets/Package-Files/U-DFN2510-10-Type-CJ.pdf U-DFN2020-6 (Type F) (https://www.diodes.com/assets/Package-Files/U-DFN2020-6-Type-F.pdf HVQFN, 16 Pin (https://www.allegromicro.com/~/media/Files/Datasheets/A4403-Datasheet.ashx), generated with kicad-footprint-generator PCB Mount Receptacle, Vertical, Board-to-Board, 38 Position, 24.003mm / .64mm [.945in] Centerline, Header Only, Palladium Nickel (https://www.te.com/commerce/DocumentDelivery/DDEController?Action=showdoc&DocId=Customer+Drawing%7F5767171%7FB2%7Fpdf%7FEnglish%7FENG_CD_5767171_B2.pdf%7F5767171-1#page=2 Molex Mini-Universal MATE-N-LOK, old mpn/engineering number: 5566-22A, example for new mpn: 39-30-0180, 9 Pins (http://www.farnell.com/datasheets/2157639.pdf), generated with kicad-footprint-generator Molex KK 396 Interconnect System, old/engineering part number: A-41792-0006 example for new part number: A-41791-0005 example for new mpn: 39-29-4169, 8 Pins per row (http://www.molex.com/pdm_docs/sd/1053141208_sd.pdf), generated with kicad-footprint-generator Mounting Hardware, inside blind hole M1.6, height 4.5, Wuerth electronics 9774040482 (https://katalog.we-online.de/em/datasheet/9774040482.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-107-02-xxx-DV-BE-A, 7 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 734 Male header.

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