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432 B


  • replace 0805 LEDs with 0603 (makes it more compact)
  • shield LED only on if shell is interconnected AND grounded (was OR before)


  • schematic and board layout redrawn in KiCAD
  • slightly change front text to be more symmetrical
  • change USB-C connector to improve manufacturing yield


  • reroute SBU test to only use one LED
  • make LED colors symmetric


initial design, based on a protoboard prototype.