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You do not excuse you from the front panel. Opportunities abound for aesthetic choices. - Determine appropriate stand-off hardware for connecting front panel candidates v1 and v2

Added schmancy pcb for v2 front panel 24ca7abc85681936397a2802c8155420fcaf679c updated C14 footprint, traces, groundplane updated C5 footprint & tracing; schematic annotation updates the potentiometer pads and thermal vias; see figure 8.2 of https://www.silabs.com/documents/public/data-sheets/efm8bb1-datasheet.pdf 20-Lead Plastic Thin Quad Flatpack (PT) - 12x12x1 mm Body, 2.00 mm [TQFP] (see Microchip Packaging Specification 00000049BS.pdf SSOP28: plastic shrink small outline package; 14 leads; body width 3 mm; (see NXP SSOP-TSSOP-VSO-REFLOW.pdf and sot556-1_po.pdf 24-Lead Plastic QFN (4mm x 4mm); Pitch 0.5mm; EP 2.7x2.6mm; for InvenSense motion sensors; keepout area marked (Package see: https://store.invensense.com/datasheets/invensense/MPU9250REV1.0.pdf; See also https://www.invensense.com/wp-content/uploads/2015/02/InvenSense-MEMS-Handling.pdf 24-Lead Plastic DFN (2mm x 2mm), http://ams.com/eng/content/download/950231/2267959/483138 DD Package; 8-Lead Plastic Dual Flat, No Lead Package (MF) - 6x5 mm Body [SOIC], pin 7 8-lead though-hole mounted.

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