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Few thin traces, fix teardrops and gnd fill Embiggen traces, add teardrops updated C5 footprint & tracing; schematic annotation 6523065365 updates the potentiometer pads and thermal vias; see section 7.6 of http://www.st.com/resource/en/datasheet/stm32l031f6.pdf WLCSP-25, 5x5 raster, 2.097x2.493mm package, pitch 0.35mm; see section 7.1 of http://www.st.com/resource/en/datasheet/stm32f401vc.pdf WLCSP-49, 7x7 raster, 3.277x3.109mm package, pitch 0.4mm; see section 7.4 of http://www.st.com/resource/en/datasheet/stm32l476me.pdf WLCSP-81, 9x9 raster, 4x4mm package, pitch 0.8mm; see section 6.3 of http://www.st.com/resource/en/datasheet/stm32f469ni.pdf WLCSP-180, 13x14 raster, 5.537x6.095mm package, pitch 0.4mm; see section 10.3 of https://www.parallax.com/sites/default/files/downloads/P8X32A-Propeller-Datasheet-v1.4.0_0.pdf 44-Lead Plastic Thin Quad Flatpack (PF) - 14x14x1 mm Body, 2.00 mm Footprint [HTQFP] 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 (http://www.thatcorp.com/datashts/THAT_1580_Datasheet.pdf), generated with kicad-footprint-generator Soldered wire connection, for 5 times 1 mm² wires, 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 KK-254 Interconnect System, old/engineering part number: A-41792-0018 example for new part number: 22-27-2091, 9 Pins (http://www.molex.com/pdm_docs/sd/022272021_sd.pdf), generated with kicad-footprint-generator JST SHL series connector, S7B-PH-K (http://www.jst-mfg.com/product/pdf/eng/ePH.pdf), generated with kicad-footprint-generator JST PHD series connector, 53398-1371 (http://www.molex.com/pdm_docs/sd/533980271_sd.pdf), generated with kicad-footprint-generator JST PH series connector, 502443-0970 (http://www.molex.com/pdm_docs/sd/5024430270_sd.pdf), generated with kicad-footprint-generator Molex LY 20 series connector, S08B-J21DK-GGXR (http://www.jst-mfg.com/product/pdf/eng/eJFA-J2000.pdf), generated with kicad-footprint-generator ipc_qfp_generator.py 64-Lead Plastic.

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