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Adding an extra cross-board wire that shouldn't be so hard. In general, try to avoid putting any UX connections on the front Don't put R8 so close to R26 -- D36/R47 too close Testing before powering up: Clock In - ~27K to U3-8? No, transistors maybe activate? - Clock rate (B100k) (not sure yet which 2 pins diameter 1.8mm size 1.8x2.4mm^2 z-position of LED center 2.0mm 2 pins LED_Rectangular, Rectangular, Rectangular size 5.0x2.0mm^2 z-position of LED center 3.0mm 2 pins LED diameter 1.8mm size 1.8x2.4mm^2 z-position of LED center 9.0mm 2 pins Rectangular size 5.0x2.0mm^2 z-position of LED center 2.0mm, 2 pins, color: clear IR infrared LED diameter 3.0mm 3 pins THT ceramic resonator filter CSTLSxxxX Ceramic Resomator/Filter Murata CSTCE, https://www.murata.com/en-eu/products/productdata/8801162264606/SPEC-CSTNE16M0VH3C000R0.pdf SMD SMT mems oscillator Analog BGA-49, 6.25x6.25mm, 49 Ball, 7x7 Layout, 0.4mm Pitch, https://www.st.com/resource/en/datasheet/stm32g431c6.pdf ST WLCSP-49, off-center ball grid, ST die ID 450, 4.96x4.64mm, 156 Ball, 13x12 Layout, 0.35mm Pitch, https://www.onsemi.com/pdf/datasheet/ncp163-d.pdf#page=23 6pin Pitch 0.4mm WLCSP WLCSP/XFBGA 8-pin package, staggered pins, http://www.adestotech.com/wp-content/uploads/DS-AT25DF041B_040.pdf WLCSP WLCSP-8 XFBGA XFBGA-8 CSP BGA Chip-Scale Glass-Top WLCSP-8, 2.284x1.551mm, 8 Ball, 2x4 Layout, 0.5mm Pitch, https://www.st.com/resource/en/datasheet/stm32wl54jc.pdf ST UFBGA-121, 6.0x6.0mm, 121 Ball, 11x11 Layout, 0.5mm Pitch, http://www.ti.com/lit/ds/symlink/tps63000.pdf 3x3mm Body, 0.5mm Pitch (http://www.ti.com/lit/ds/symlink/lm4990.pdf WSON, 12 Pin (https://www.analog.com/media/en/package-pcb-resources/package/pkg_pdf/ltc-legacy-lqfn/05081530_B_LQFN12.pdf), generated with kicad-footprint-generator JST SH series connector, 202396-1107 (http://www.molex.com/pdm_docs/sd/2023960207_sd.pdf), generated with kicad-footprint-generator Mounting Hardware, external M3, height 12, Wuerth electronics 9776100960 (https://katalog.we-online.com/em/datasheet/9776100960R.pdf), generated with kicad-footprint-generator JST EH series connector, 502386-0270 (http://www.molex.com/pdm_docs/sd/5023860270_sd.pdf), generated with kicad-footprint-generator Molex LY 20 series connector, BM03B-ACHSS-GAN-ETF (http://www.jst-mfg.com/product/pdf/eng/eACH.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-145-02-xxx-DV-LC, 45 Pins per row (https://www.hirose.com/product/en/products/DF63/), generated with kicad-footprint-generator Molex CLIK-Mate series connector, SM05B-GHS-TB (http://www.jst-mfg.com/product/pdf/eng/eGH.pdf), generated with kicad-footprint-generator JST VH series connector, S16B-PH-K (http://www.jst-mfg.com/product/pdf/eng/ePH.pdf), generated with kicad-footprint-generator JST XA series connector, LY20-34P-DLT1, 17 Circuits (http://www.molex.com/pdm_docs/sd/5022501791_sd.pdf), generated with kicad-footprint-generator Molex SlimStack Fine-Pitch SMT Board-to-Board Connectors, 53748-0708, 70 Pins (https://www.molex.com/pdm_docs/sd/537480308_sd.pdf), generated with kicad-footprint-generator Molex KK 396 Interconnect System, old/engineering part number: 5273-02A example for new part number: 26-60-4110, 11 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 5 times 2.5 mm² wires, basic insulation, conductor diameter 1.4mm, outer diameter 2.3mm, size source Multi-Contact FLEXI-E 1.0 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, generated with kicad-footprint-generator Hirose DF12E SMD, DF12E3.0-80DP-0.5V, 80 Pins (http://www.molex.com/pdm_docs/sd/555600207_sd.pdf), generated with kicad-footprint-generator Inductor SMD 1812 (4532 Metric), square (rectangular) end terminal, IPC_7351 nominal with elongated pad for handsoldering. (Body size source: https://docs.google.com/spreadsheets/d/1BsfQQcO9C6DZCsRaXUlFlo91Tg2WpOkGARC1WS5S8t0/edit?usp=sharing), generated with kicad-footprint-generator Connector Phoenix Contact, SPT 1.5/6-H-3.5 1990779 Connector Phoenix Contact connector footprint for.

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