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SMD layout

Here's the first draft of an SMD PCB layout for the Airsoft Rounds Counter project.

The wire pads are as follows:

  • VIN
    9V power input
  • AN, CA
    Anode and cathode the the photo interrupter LED
  • CO, EM
    Collector and emitter for the photo interrupter transistor
  • A-G, DP
    Segment anodes on the display
  • 1-4
    Digit cathodes on the display
  • RST/PRG SW
    Reset and program tact switch

Actual size is 49.53 x 20.32 mm.

SMD layout

SMD layout (click for larger version)


One comment on "SMD layout"

[...] the VCC and GND traces are now 24 mils and all other traces are 12 mils wide. Refer to the first layout if you can't remember what the various wirepads are for. SMD layout, revision 2 (click for larger [...]

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