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Https://www.latticesemi.com/view_document?document_id=213 UCBGA-49, 7x7 raster, 3.029x3.029mm package, pitch 0.8mm; https://www.nxp.com/docs/en/package-information/SOT1529-1.pdf Altera BGA-672 F672 FBGA WLP-15, 3x5 raster, 2.28x3.092mm package, pitch 0.4mm; see section 7.5 of http://www.st.com/resource/en/datasheet/DM00340475.pdf WLCSP-66, 9x9 raster, 4x4mm package, pitch 0.4mm; see section 7.5 of http://www.st.com/resource/en/datasheet/DM00257211.pdf WLCSP-49, 7x7 raster, 3.141x3.127mm package, pitch 0.4mm; see section 6.3 of http://www.st.com/resource/en/datasheet/stm32f100v8.pdf TFBGA-100, 10x10 raster, 8x8mm package, pitch 0.5mm (http://www.analog.com/media/en/package-pcb-resources/package/56702234806764cp_24_3.pdf, http://www.analog.com/media/en/technical-documentation/data-sheets/ADL5801.pdf LFCSP VQ, 24 pin, exposed pad, 4x4mm body, pitch 0.5mm, see http://www.ti.com/lit/ds/symlink/tps62177.pdf WSON 0.5 thermal vias in pads, 3 Pins per row (https://www.hirose.com/product/en/products/DF13/DF13-4P-1.25DS%2820%29/), generated with kicad-footprint-generator JST PUD series connector, BM06B-SRSS-TB (http://www.jst-mfg.com/product/pdf/eng/eSH.pdf), generated with kicad-footprint-generator Molex Molex 1.00mm Pitch Easy-On BackFlip, Right-Angle, Bottom Contact FFC/FPC, 200528-0160, 16 Circuits (http://www.jae.com/z-en/pdf_download_exec.cfm?param=SJ038187.pdf), generated with kicad-footprint-generator Hirose DF12E SMD, DF12E3.0-36DP-0.5V, 36 Pins (https://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=826576&DocType=Customer+Drawing&DocLang=English), generated with kicad-footprint-generator ipc_noLead_generator.py QFN, 32 Pin (http://ww1.microchip.com/downloads/en/DeviceDoc/00002164B.pdf#page=68), generated with kicad-footprint-generator Molex Mini-Fit Jr. Power Connectors, 105310-xx06, 3 Pins per row (http://www.molex.com/pdm_docs/sd/530470610_sd.pdf), generated with kicad-footprint-generator Soldered wire connection with double feed through strain relief, for a 5mm led, with a diode to U2-3 Glide In - ~27K to U3-8? No, transistors maybe activate? - Clock out socket, with option to send CV; could also do all-different colors, but unfortunately Mouser only has A1Ms in orange. *** Expensive, about $3 each. *** Replacing LEDs in sliders, lit for each stage? * TBD, needs testing; but if LEDs are possible, this should be enclosed in the same form.

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