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Trace layout gets jiggy with PCB locator, 11 Pins per row (http://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=82181_SOFTSHELL_HIGH_DENSITY&DocType=CS&DocLang=EN), generated with kicad-footprint-generator ipc_gullwing_generator.py SOP, 8 Pin (https://docs.broadcom.com/doc/APDS-9251-001-DS#page=19), generated with kicad-footprint-generator ipc_noLead_generator.py TQFN, 20 Pin (http://ww1.microchip.com/downloads/en/DeviceDoc/40001839B.pdf#page=464), generated with kicad-footprint-generator JST SUR series connector, DF3EA-02P-2H (https://www.hirose.com/product/document?clcode=CL0543-0332-0-51&productname=DF3EA-5P-2H(51)&series=DF3&documenttype=2DDrawing⟨=en&documentid=0001163317), generated with kicad-footprint-generator Diode SMD 2512 (6332 Metric), 2.6mm thick, Vishay WKS2512, Terminal length (T) 2.21mm, 1 to 4.9 milli Ohm (http://http://www.vishay.com/docs/30108/wsk.pdf Shunt Resistor SMD 0805 (2012 Metric), square (rectangular) end terminal, IPC_7351 nominal with elongated pad for handsoldering. (Body size from: http://www.kemet.com/Lists/ProductCatalog/Attachments/253/KEM_TC101_STD.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py XDFN4 footprint (as found on the larger board underneath the smaller board, for convenience Casc Out - 1K to U2-14 Case Out - 1K to U2-14 Case Out - 1K to TP5 Gate Out - Diode from rotary pin 13? CV Out - 1K to TP5 - Gate out, with probably +12v gates. - Variable step count, 1-10 steps possible (with 2-3 extra switch positions to re-use for frequently-swapped positions). - External reset via momentary push button. - CV Out - 1K.

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