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Layers", re-re-remove the mysterious extra trace re-re-remove the mysterious extra trace Added schmancy pcb for v1 front panel and Pin 1, vertical PCB mount, http://cherryamericas.com/wp-content/uploads/2014/12/mx_cat.pdf Cherry MX keyswitch, 1.50u, http://matias.ca/switches/ Matias ALPS keyswitch 1.25u plate Cherry MX keyswitch 2.00u vertical PCB mount, http://cherryamericas.com/wp-content/uploads/2014/12/mx_cat.pdf Cherry MX keyswitch, 2.00u, plate mount, http://cherryamericas.com/wp-content/uploads/2014/12/mx_cat.pdf Cherry MX keyswitch, 2.75u, PCB mount, https://www.neutrik.com/en/product/nc5fah A Series, 4 pole chassis connector, black D-size flange, self tapping screw holes (A-screw), vertical PCB mount, https://www.neutrik.com/en/product/nc3mah-0 A Series, 5 pole female XLR receptacle, grounding: separate ground contact to mating connector shell and front panel, horizontal PCB mount, https://www.neutrik.com/en/product/nc3fbhl1 B Series, 3 pole male XLR receptacle, grounding: mating connector shell and front panel, vertical PCB mount, https://www.neutrik.com/en/product/nc3fahr2 A Series, 3 pole female XLR receptacle, grounding: separate ground contact to mating connector shell and front panel, steel retention lug, vertical PCB mount, http://cherryamericas.com/wp-content/uploads/2014/12/mx_cat.pdf Cherry MX keyswitch, 2.00u, plate mount, http://cherryamericas.com/wp-content/uploads/2014/12/mx_cat.pdf Cherry MX keyswitch 1.00u PCB Cherry MX keyswitch, 6.25u, http://matias.ca/switches/ Matias ALPS keyswitch 2.75u PCB Cherry MX keyswitch, 1.75u, PCB mount, asymmetric push, https://www.neutrik.com/en/product/nc3fbv2-da B Series, 3 pole female XLR receptacle, grounding: separate ground contact to mating connector shell and front panel: 9.8mm (alpha pots sliders: 3mm above panel, tight but possible mini toggle: 4mm above panel, tight but possible micro toggle: probably too short without extra spacers, use mini toggle pushbuttons: ample space above 11.75mm (existing 1p12t rotaries, use 11.25mm holes to PCB edge 10.889999999999999mm, see https://disti-assets.s3.amazonaws.com/tonar/files/datasheets/16730.pdf 37-pin D-Sub connector horizontal angled 90deg THT female pitch 2.77x2.84mm pin-PCB-offset 4.9399999999999995mm mounting-holes-distance 47.1mm mounting-hole-offset 47.1mm 25-pin D-Sub connector, horizontal/angled (90 deg), THT-mount, female, pitch 2.77x2.84mm, pin-PCB-offset 9.4mm, see http://docs-europe.electrocomponents.com/webdocs/1585/0900766b81585df2.pdf 9-pin D-Sub connector horizontal angled 90deg THT male pitch 2.77x2.84mm pin-PCB-offset 9.4mm 37-pin D-Sub connector straight rugged MUSB D511 USB 2.0 Type C Receptacle, GCT, 16P, top mounted, horizontal, 5A: https://gct.co/files/drawings/usb4105.pdf USB C Type-C USB3 receptacle SMD USB 2.0 Type C Receptacle, GCT, 16P, top mounted, horizontal, 3A: https://gct.co/files/drawings/usb4135.pdf USB C Type-C Receptacle SMD USB 2.0 Type C (https://www.bulgin.com/products/pub/media/bulgin/data/Battery_holders.pdf Comfortable Electronic CR2450 battery holder, Memory Protection Devices P/N BC2AAPC, http://www.memoryprotectiondevices.com/datasheets/BC2AAPC-datasheet.pdf 2xAA cell battery holder, http://www.comf.com.tw/ProductDetail.asp?no=148 Keystone type 104 battery holder Keystone type 3000 coin cell retainer BR2016 CR2016 DL2016 BR2020 CL2020 BR2025 CR2025 DL2025 DR2032 CR2032 DL2032 Keystone type 3008.

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