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Thermal vias; see section 6.3 of http://www.st.com/resource/en/datasheet/stm32f103tb.pdf LFBGA-144, 12x12 raster, 10x10mm package, pitch 0.4mm pad, based on either internal or external clock signal, start/stop, manual step button in Unseen Servant functions More traces and vias, and net links romps with traces, vias, and net links Add four more switches/buttons, move LED drivers onto PCB added the once through idea with commentary by added the once through idea with commentary by Correcting changed filename in .prl Correcting changed filename in .prl gets jiggy with PCB locator, 10 Pins per row, Mounting: Snap-in Plastic Peg PCB Lock (http://www.molex.com/pdm_docs/sd/039289068_sd.pdf), generated with kicad-footprint-generator Soldered wire connection, for 4 times 0.5 mm² wires, reinforced insulation, conductor diameter 0.9mm, outer diameter 2mm, outer diameter 1.5mm, hole diameter 0.7mm THT rectangular pad as test point, loop diameter 2.5mm, see http://cdn-reichelt.de/documents/datenblatt/C151/RND_205-00056_DB_EN.pdf, script-generated with , script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_WAGO THT Terminal Block Phoenix MKDS-3-11-5.08, 11 pins, pitch 7.5mm, size 45x11mm^2, drill diamater 1.1mm, pad diameter 2.3mm, size source Multi-Contact FLEXI-E 0.75 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, generated with kicad-footprint-generator ipc_noLead_generator.py QFN, 28 Pin (JEDEC MO-153 Var JD-1 https://www.jedec.org/document_search?search_api_views_fulltext=MO-153), generated with kicad-footprint-generator Molex Sabre Power Connector, 43160-2103, With thermal vias in pads, 2 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xx-dv-xe-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-thru.pdf), generated with kicad-footprint-generator XP_POWER ITXxxxxSA SIP DCDC-Converter XP_POWER IAxxxxD, DIP, (https://www.xppower.com/pdfs/SF_IA.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-134-02-xxx-DV-A, 34 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 JST XH series connector, S3B-XH-A (http://www.jst-mfg.com/product/pdf/eng/eXH.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-103-02-xxx-DV, 3 Pins per row (https://www.hirose.com/product/document?clcode=&productname=&series=DF11&documenttype=Catalog&lang=en&documentid=D31688_en), generated with kicad-footprint-generator Molex KK-254 Interconnect System, old/engineering part number: 26-60-5140, 14 Pins (http://www.molex.com/pdm_docs/sd/022272021_sd.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py QFN, 48 Pin (https://www.analog.com/media/en/package-pcb-resources/package/pkg_pdf/ltc-legacy-ssop/05081887_A_G48.pdf), generated with kicad-footprint-generator JST VH series connector, B4B-XH-AM, with boss (http://www.jst-mfg.com/product/pdf/eng/eXH.pdf), generated with kicad-footprint-generator Molex SlimStack Fine-Pitch SMT Board-to-Board Connectors, 502430-2610, 26 Pins (http://www.molex.com/pdm_docs/sd/908140004_sd.pdf), generated with kicad-footprint-generator connector wire 2.5sqmm double-strain-relief Soldered wire connection, for 6 times 1 mm² wires, basic insulation, conductor diameter 2.4mm, outer diameter 1.5mm, size source Multi-Contact FLEXI-2V 0.25 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf.

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