Arduino OPC Server

Arduino/Genuino OPC Server 2.0

Version 2.0

  • Now OPC Server is a lot smaller
  • Now you can minimize it without have to donate or pay anymore (help is allways welcome)
  • Some changes and improvements in the library and samples
Arduino/Genuino OPC Server 1.9

Version 1.9

  • Reduced itemsmap and json response for faster processing
Arduino/Genuino OPC Server 1.8

Version 1.8

  • Improved data recovery
  • Fast and reliable
  • Some bug fixed and performance improved
Arduino/Genuino OPC Server 1.7

Version 1.7

  • Fast recovery of the OPC Items map for Ethernet and YUN
  • Some bugs fixed and performance improved
  • Examples updated
  • Please update the OPC Library from Arduino IDE library manager using the 1.7 version
Arduino OPC Server 1.6


Version 1.6

  • Support for Arduino Ethernet Shield!!!! So now is Serial, Wireless and Ethernet compilant!!!
  • Changed OPC Server Name from ArduinoSerialOPCDAServer.exe to a more generic name: ArduinoOPCServer.exe
  • Half executable size and faster
Arduino OPC Server 1.5


Version 1.5

  • Now can write/send item values to your Arduno YUN using OPC Server¬†
  • Some bug fixed and performance improve
Arduino OPC Server 1.4


Version 1.4

  • Supports for Arduino YUN and WIFI
  • Allow to get items using a Internet Browser in JSON format
  • Some new examples added with JSON support (now at )
Arduino OPC Server 1.3


Version 1.3

  • Fixed item value called twice so x2 performance!!!
  • Better memory management with less footprint
  • Writevalue fixed
  • Fixed opc items data type
  • Float support
  • Some new examples added (now at )
  • All Serial port properties are available in ini file to fine tunning
  • Beta library for Arduino Ethernet (not working yet but some code added to unify serial and ethernet library)
Arduino OPC Server 1.2


Version 1.2 (beta)

  • MultiArduino support!!!! (you should reconfigure Arduino OPC Server)
  • Bug fixes
  • Sample sketches updated
  • Browse items timeout increased
  • Add Arduino icon added
  • Log info with OPCServer application path to avoid ¬†call old OPCServers
  • Added some more log information for debug pourpose
  • Now you can change the serial control flow
  • Added vertical scroll bar for the debug window
Arduino OPC Server 1.0

Deprecated. Download latest version.


  • First release
  • Arduino Uno Tested
  • Boolean, byte and int opc item type supported
  • Callback opc item values recovery
  • Included OPC.h library with small footprint
Arduino OPC Server 1.1


  • Ability to write boolean values from OPC client
  • Port configuration shown on main form
  • Changed name to Arduino Serial OPC DA Server
  • Added example sketches with the library
  • Version info shown in main form
  • Bugs fixed and improved performance
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