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Node identification

  • Each node needs an id so user can refer to it during configuration
  • Each node uses the same code binaries so it need to be configurable
    • based on the ratio of two resistors
    • dip switch
      • convert 8 switch position into a number from 0 to 256
      • communicate number to AtMega (one wire bus)
    • Flash chip has a 4 bytes unique identifier