All iaconnects MobiusFlow devices come with the open source Node-RED flow-based programming software installed. For full Node-RED user documentation please refer to the Node-RED documentation.

Node-RED is a programming tool for wiring together hardware devices, APIs and online services in new and interesting ways. It provides a browser-based editor that makes it easy to wire together flows using the wide range of nodes in the palette that can be deployed to its runtime in a single-click. iaconnects have created a selection of nodes to communicate and interact with Mobius objects. In addition to these MobiusFlow specific Node-RED nodes, the Node-RED community have published 100's of useful nodes that you can use in your projects. For more details on the full list of Node-RED nodes and examples, please have a look here.

Using Node-RED with MobiusFlow

In order for MobiusFlow to communicate with Node-RED, a connection needs to be setup between them. This connection requires some configuration both in Mobius and Node-RED. To make this easier, iaconnects have created a Node-RED Mobius connector service and a Mobius configuration Node-RED node.

Setting up the Mobius Node-RED connector service

1. Add the Node-RED connector service to your Mobius configuration (see Configuring Services)
2. Configure the Node-RED connector service (see Node-RED Connector Service Settings). When using the built-in Node-RED instance use the following settings:
   1. Host: localhost
   2. Port: 1890
   3. PSK: a secret phrase such as my-super-secret-secret
3. Start the Node-RED connector service running (see Node Diagnostics and Service Control)
4. The service status will show as In Fault, with the message "Waiting for Node-RED to connect"

Setting up Node-RED

• Open the Node-RED flows page
• Scroll down the Node-RED palette and find a Mobius Object COV node and drag it onto the flow
• Double click on the new Node-RED node to open the node's config page
• Click on the Pencil icon to add a new Mobius connection

• Enter the same details that you entered into the Node-RED connector service and click Done

• Enter a Mobius URI to subscribe to for change of value notifications (to subscribe to all objects just enter a # wildcard) and click Done
• Click on the Deploybutton to deploy the flow

• The Node-RED node should have a green status indicator and the Node-RED connector service status should turn green and update its status text to connected