Soda Machine/Hacking

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DEX (Data Exchange (UCS)Uniform Code Standard)

  • What is DEX
  • Schematics for connector link
  • Information Available via DEX (source
    • Machine out of order
    • Product dispensing failure
    • Product alarm level (insufficient inventory)
    • Payment system errors:
    • Jam in coin mechanism
    • Jam in billvalidator
    • Error in cashless reader
    • Refrigeration breakdown
    • Door open log
    • MDB errors
      • Vandalism (unauthorized entry)


  • What is MDB (DEX vs. MDB)
    • requires an account to read, but a good article --Omegix 15:37, 4 November 2010 (CDT)
  • Protocol Specifications for the MDB (Multi Drop Bus) pdf
    • See Chapter 7 of above PDF for designing a cashless interface
  • To bed well designed, MDB devices should have a Y-connector built into them so that devices can piggy back onto the bus. See pictures in this document for example:

Information from the Mfr.

Service bulletins, Package info, etc from Royal Vendors (possibly the manufacturer). Our machine is a GIII