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V+ (i.e. 6v) but many external clock sources cycle between 0v and 5v or even much less. This can be fixed elsewhere Schematics/Enlarge/Enlarge.kicad_sch | 206 Update README.md 2cb8e5eaf679e30139948d8744800b04487466fc updated C5 footprint & tracing; schematic annotation 6523065365 updates the potentiometer pads and trace routing to de-bodge the pots. Updates the potentiometer pads and thermal vias; see section 7.1 of http://www.st.com/resource/en/datasheet/stm32f051t8.pdf WLCSP-36, 6x6 raster, 2.61x2.88mm package, pitch 0.4mm; see section 6.1 of http://www.st.com/resource/en/datasheet/stm32f405og.pdf WLCSP-100, 10x10 raster, 4.201x4.663mm package, pitch 0.4mm; see section 7.1 of http://www.st.com/resource/en/datasheet/DM00213872.pdf WLCSP-64, 8x8 raster, 3.357x3.657mm package, pitch 0.5mm; see section 7.5 of http://www.st.com/resource/en/datasheet/stm32l152zd.pdf WLCSP-64, 8x8 raster, 3.347x3.585mm 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 QFN, 48 Pin (http://ww1.microchip.com/downloads/en/devicedoc/00002117f.pdf#page=69), generated with kicad-footprint-generator Mounting Hardware, inside blind hole M1.6, height 1, Wuerth electronics 97730606332 (https://katalog.we-online.com/em/datasheet/97730606332.pdf), generated with kicad-footprint-generator connector Harwin M20 side entry JST NV series connector, SM04B-ZESS-TB (http://www.jst-mfg.com/product/pdf/eng/eZE.pdf), generated with kicad-footprint-generator Molex Sabre Power Connector, 43160-1102, 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 Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-118-02-xxx-DV-LC, 18 Pins per row (https://www.hirose.com/product/document?clcode=CL0537-0834-6-81&productname=DF12E(3.0)-50DP-0.5V(81)&series=DF12&documenttype=2DDrawing&lang=en&documentid=0000992393), generated with kicad-footprint-generator Molex Sabre Power Connector, 43160-1105, With thermal vias in pads, 3 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 Inductor SMD Pulse PA4320 Pulse PA4344 PM4344 Series SMD Inductors Inductor, Sagami, h=4.5mm, http://www.sagami-elec.co.jp/file/CER1242B-CER1257B-CER1277B.pdf inductor sagami cwr12xx smd Sagami power inductor, CWR1242C, H=7.7mm (http://www.sagami-elec.co.jp/file/16Car_SMDCwr.pdf SMD Power Inductor SMD Wuerth WE-DD TypM TypS Unshielded Inductor, Wuerth Elektronik, Wuerth_HCI-1350, 12.8mmx12.8mm Inductor, Wuerth Elektronik, Wuerth_HCI-7040, 6.9mmx6.9mm Inductor, Wuerth Elektronik, Wuerth_HCM-1240, 10.0mmx11.8mm Inductor, Wuerth Elektronik, Wuerth_MAPI-3012, 3.0mmx3.0mm Inductor, Wuerth Elektronik, Wuerth_HCM-1240, 10.0mmx11.8mm Inductor, Wuerth Elektronik, Wuerth_HCM-1052, 10.5mmx10.3mm Inductor, Wuerth Elektronik, Wuerth_HCI-5040, 5.5mmx5.2mm Inductor, Wuerth Elektronik, Wuerth_HCI-2212, 22.5mmx22.0mm Inductor, Wuerth Elektronik, Wuerth_HCI-5040, 5.5mmx5.2mm Inductor, Wuerth Elektronik, Wuerth_HCI-1050, 10.2mmx10.2mm Inductor, Wuerth Elektronik, Wuerth_MAPI-3010, 3.0mmx3.0mm Inductor, Wuerth Elektronik, Wuerth_MAPI-2508, 2.5mmx2.0mm Inductor, Wuerth Elektronik, WE-PDF, SMD, Handsoldering, NF-Transformer ETAL P2781 SMD Handsoldering NF-Reansformer, ETAL, P3000, SMD, NF-Reansformer ETAL P3000 SMD Handsoldering NF-Transformer, ETAL, P2781, SMD, NF-Transformer ETAL P3181 SMD Hand Soldering NF-Transformer, ETAL, P3191, SMD, NF-Transformer ETAL P3188 SMD Handsoldering For.

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