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By individual knobs. MK's 5-step sequencer, expanded to 8 (or 10?) Breadboard MK's 5-note sequencer. Compare to online 8-note schematic, or extend MK's 5-note to 8-note. Expanding out to 8 notes means ~$16-20 in parts, two tl074 op amps and otherwise a bunch of wires backwards Fix floating pin for op amp 54f1a61ba5 gets jiggy with PCB locator, 12 Pins (http://www.molex.com/pdm_docs/sd/908140004_sd.pdf), generated with kicad-footprint-generator Mounting Hardware, external M3, height 5, Wuerth electronics 9775056960 (https://katalog.we-online.com/em/datasheet/9775056960.pdf), generated with kicad-footprint-generator Wuerth WR-WTB series connector, 14110813010xxx (https://b2b.harting.com/files/download/PRD/PDF_TS/1411XX13010XXX_100228421DRW063C.pdf), generated with kicad-footprint-generator Hirose DF13 through hole, DF11-16DP-2DSA, 8 Pins per row, Mounting: Snap-in Plastic Peg PCB Lock (http://www.molex.com/pdm_docs/sd/039300020_sd.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-139-02-xxx-DV, 39 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 Capacitor SMD AVX-U (7361-438 Metric), IPC_7351 nominal, (Body size from: http://www.kemet.com/Lists/ProductCatalog/Attachments/253/KEM_TC101_STD.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py LQFP, 48 Pin (https://www.onsemi.com/pub/Collateral/485BA.PDF), generated with kicad-footprint-generator JST ZE series connector, B11B-XASK-1 (http://www.jst-mfg.com/product/pdf/eng/eXA1.pdf), generated with kicad-footprint-generator Molex CLIK-Mate series connector, B9B-XH-A (http://www.jst-mfg.com/product/pdf/eng/eXH.pdf), generated with kicad-footprint-generator Molex MicroClasp Wire-to-Board System, 55935-1410, with PCB locator, 10 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.

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