This OptoTutorial shows how to:

• Use Node-RED to subscribe and publish to an MQTT message stream
• Parse message strings
• Display data from a message in groov View
• Push data from groov View and from a SNAP PAC controller to a message stream

Note: The tutorial uses a groov Box (part number GROOV-AR1-BASE) as an example. The groov Box is a legacy product not recommended for new applications, but it is still available and supported. 

What you need

• Node-RED and the groov View Nodes (preinstalled on a groov AR1 Box running groov R3.3 or higher).
• To complete the SNAP PAC Publishing activity, you’ll also need:
  • A SNAP PAC R- or S-series controller running SNAP PAC firmware R9.5 or higher.
  • The SNAP PAC Nodes for Node-RED.
  • PAC Project 9.5 or higher. (Both the Professional and Basic versions work with this activity.)
  • The SNAP PAC Learning Center strategy (available for free from the Opto 22 Downloads webpage).

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