First you have to download Matrikon OPC Explorer from http://www.matrikonopc.es/products/opc-desktop-tools/opc-explorer.aspx
Once installed, execute it and try to browse your Arduino OPC Server.
![](https://www.st4makers.com/old/images/arduino_opc_server/how-to/matrikon_opc_explorer/matrikon_and_arduino_opc_server.png)
If Arduino OPC Server is not shown then maybe you need to configure Matrikon OPC Server to find it.
![](https://www.st4makers.com/old/images/arduino_opc_server/how-to/matrikon_opc_explorer/connect_arduino_opc_server.png)
Go to Options and configure Matrikon OPC Server to search for OPC Servers from the Windows registry.
![](https://www.st4makers.com/old/images/arduino_opc_server/how-to/matrikon_opc_explorer/configure_matrikon.png)
Now you can connect to your OPC Server for Arduino. Remember to configure it adding your Arduino communication COM Port.
![](https://www.st4makers.com/old/images/arduino_opc_server/how-to/matrikon_opc_explorer/connect_matrikon_and_arduino_opc.png)
The OPC Server will be launched and will start communicate with your Arduino. Now you can create your items groups.
![](https://www.st4makers.com/old/images/arduino_opc_server/how-to/matrikon_opc_explorer/create_group.png)
![](https://www.st4makers.com/old/images/arduino_opc_server/how-to/matrikon_opc_explorer/configure_group.png)
Now you have created your “test” group and now you should add OPC Items to it.
![](https://www.st4makers.com/old/images/arduino_opc_server/how-to/matrikon_opc_explorer/add_items.png)
Press right click mouse to get the popup menu to “Add All Items to Tag List” or select only the Items you want.
![](https://www.st4makers.com/old/images/arduino_opc_server/how-to/matrikon_opc_explorer/add_all_items.png)
Now you should get all your OPC Items from your Arduino in real time 🙂