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R/L

Accented note (right/left hand suggested)

r/l

Quieter, unaccented note

A trill, generally three very fast notes on repique/caixa, two or three for surdos Add schematic, start on PCB Added input resistor for sync; placed everything on PCB sandwich, making some final-ish decisions about connecting to front panel 24ca7abc85681936397a2802c8155420fcaf679c updated C14 footprint, traces, groundplane updated C5 footprint & tracing; schematic annotation Add 55k-ish resistor to coarse knob (doublecheck this placement). Actual value unclear (see below).

Argument for a 1uF capacitor; expand a bit, but also size it for a single 1 mm² wire, basic insulation, conductor diameter 0.9mm, outer diameter 1.5mm, size source Multi-Contact FLEXI-xV 2.0 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, generated with kicad-footprint-generator Molex Nano-Fit Power Connectors, 43915-xx06, With thermal vias in pads, 5 Pins per row (https://www.hirose.com/product/en/products/DF13/DF13-2P-1.25DSA%2850%29/), generated with kicad-footprint-generator JST ZE series connector, BM08B-ZESS-TBT (http://www.jst-mfg.com/product/pdf/eng/eZE.pdf), generated with kicad-footprint-generator JST PUD series connector, SM13B-ZESS-TB (http://www.jst-mfg.com/product/pdf/eng/eZE.pdf), generated with kicad-footprint-generator Molex KK-254 vertical Molex SPOX Connector System, 5267-12A, 12 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 ipc_noLead_generator.py QFN, 56 Pin (JEDEC MO-241/VAB, https://assets.nexperia.com/documents/package-information/SOT763-1.pdf), generated with kicad-footprint-generator Connector Phoenix Contact, SPT 2.5/5-H-5.0 Terminal Block, 1990973 (https://www.phoenixcontact.com/online/portal/gb/?uri=pxc-oc-itemdetail:pid=1990973), generated with kicad-footprint-generator Harting har-flexicon series connector, S32B-PUDSS-1 (http://www.jst-mfg.com/product/pdf/eng/ePUD.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py WSON, 8 Pin (https://docs.broadcom.com/docs/AV02-4755EN), generated with kicad-footprint-generator Molex Picoflex Ribbon-Cable Connectors, 90814-0024, 24 Pins (http://www.molex.com/pdm_docs/sd/555600207_sd.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-129-02-xx-DV-PE-LC, 29 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 ipc_noLead_generator.py Texas WSON-6 DQK, http://www.ti.com/lit/ds/symlink/csd16301q2.pdf Texas DRC0010J, VSON10 3x3mm Body, 0.5mm Pitch, http://www.ti.com/lit/ds/symlink/ts3a24159.pdf Texas Instruments, DSBGA, area grid, YZT, 1.86x1.36mm, 12 Ball, 4x3 Layout, 0.4mm Pitch, https://www.st.com/resource/en/datasheet/stm32wb15cc.pdf#page=119 ST WLCSP-52, ST die ID 461, 4.63x4.15mm, 115 Ball, X-staggered 7x5 Layout, 0.4mm Pitch, YFF0006, NSMD pad definition Appendix A BGA 676 1 RF676 RFG676 Artix-7 BGA, 26x26 grid, 27x27mm package, 1mm pitch; https://www.xilinx.com/support/documentation/user_guides/ug475_7Series_Pkg_Pinout.pdf#page=269, NSMD pad definition (http://www.ti.com/lit/ds/symlink/txb0104.pdf, http://www.ti.com/lit/wp/ssyz015b/ssyz015b.pdf Texas Instruments, DSBGA-6, 0.704x1.054mm, NSMD, YKA pad definition, 0.8875x1.3875mm, 5 Ball, 2x3 Layout, 0.5mm Pitch, https://www.st.com/resource/en/datasheet/stm32mp151a.pdf ST TFBGA-361, 12.0x12.0mm, 361 Ball, 23x23 Layout, 0.5mm Pitch, https://www.nxp.com/docs/en/package-information/98ASA00869D.pdf#page=1 MAPBGA 14x14x1.18 PKG, 14.0x14.0mm, 289 Ball, 17x17 Layout, 0.8mm Pitch, https://www.st.com/resource/en/datasheet/stm32mp151a.pdf ST LFBGA-448, 18.0x18.0mm, 448 Ball, 22x22 Layout, 0.8mm Pitch, https://www.micron.com/-/media/client/global/documents/products/data-sheet/dram/ddr3/4gb_ddr3l.pdf#page=27 FBGA-96, 14.0x8.0mm, 96 Ball, 9x16 Layout, 0.8mm Pitch, https://www.st.com/resource/en/datasheet/stm32h7b3ri.pdf ST TFBGA-257, 10.0x10.0mm, 257 Ball, 19x19 Layout, 0.5mm Pitch, https://www.diodes.com/assets/Datasheets/AP22913.pdf WLCSP-4, 0.64x0.64mm, 4 Ball, 2x2 Layout, 0.5mm.

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