IoTFlows
  • Welcome to IoTFlows Docs
  • IoTFlows
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    • 1. Connect a device to the cloud or create a virtual device
    • 2. SSH to your device over the internet
    • 3. Transfer files to your device over the internet
    • 4. Remotely access Node-RED on your device
    • 5. Create public links for local web-apps
  • Real-Time Data Streams, Alerts, and Actions
    • Create a Device API Key
    • Publish and subscribe to real-time messages with Node-RED
    • Creating an Alert Channel
    • Publish an Alert with Node-RED
    • Define and execute an Action in Node-RED
    • Python real-time SDK
    • Javascript real-time SDK
  • Cloud Node-RED Servers
    • Create a secure Cloud Node-RED Server in five minutes
    • Subscribe to data streams with a Cloud Node-RED Server
    • Integrate data streams to Node-RED dashboard
    • Integrate data streams to Slack
  • IOTFLOWS OVERVIEW
    • IoTFlows Roles and Permissions
    • Adding Team Members
  • Example Projects
    • Raspberry Pi as Gateway
      • Arduino to Raspberry Pi Serial Communication for Ultrasonic Sensor
    • Getting Started with Node-Red Dashboard
      • Installing Node-Red Dashboard
      • Accessing Node-Red Dashboard
      • 1. Creating a Page
      • 2. Adding Gauge Nodes
      • 3. Changing Dashboard Themes
      • 4. Adding Data to Gauge Nodes
      • 5. Adding a Chart Node
      • 6. Adding Data to Chart Node
      • 7. Adding a Template Node
      • 8. Adding Data to Template Node
      • 9. Adding Switch Node
      • 10. Adding Logic to Switch Node
      • 11. Adding a Slider Node
      • 12. Adding a Color Picker Node
      • 13. Adding a Numeric Node
      • 14. Adding a Button Node
      • 15. Adding Logic to a Button Node
      • Node-Red Dashboard Code
    • Publishing Data Streams from Python
    • Ultrasonic Sensor on Raspberry Pi Node-Red
  • General
    • Downloading IoTFlows Node-Red Nodes
    • Publishing Alert from Node-Red Manual
    • Publishing Data Stream from Node-Red Manual
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  1. Example Projects
  2. Getting Started with Node-Red Dashboard

15. Adding Logic to a Button Node

Previous14. Adding a Button NodeNextNode-Red Dashboard Code

Last updated 4 years ago

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In order to add logic into our button node, we will add an inject node, a function node, and two change nodes. This will allow us to change the color and the icon of the button when pressed.

Next, double-click on the function parameter, type the following code and parameters

var state = context.state || false;
state = !state;
context.state = state;
if (state) { return [msg,null]; }
else { return [null,msg]; }

Click Done once completed

Next, double-click on the top change (1) node and change the following parameters

<i class="fa fa-rotate-90 fa-folder-open-o"></i> OPENED FEEDER

Click Done once completed

Next, double-click on the top change (2) node and change the following parameters

<i class="fa fa-rotate-90 fa-folder-o"></i> CLOSED FEEDER

Click Done once completed

Next, double-click on the inject node and change the following parameters

Click Done once completed

Next, connect all the nodes as shown below

Click Deploy and go to your Dashboard page

Congratulations, you have successfully built your dashboard!