Remote Layout Downloading

For situations where you want to load a dashboard layout from your robot, Elastic supports downloading a layout remotely and merging it with your current layout.

On-Robot Configuration

In your robot code, add the following line in robotInit() or another initialization function

Java

WebServer.start(5800, Filesystem.getDeployDirectory().getPath());

C++

wpi::WebServer::GetInstance().Start(5800, frc::filesystem::GetDeployDirectory());

In addition, you will also need the following includes at the top of your file:

#include <frc/Filesystem.h>
#include <wpinet/WebServer.h>

Next, you will have to deploy the Elastic configuration file to your robot:

1. Export the layout from Elastic

2. Move the exported json file into the deploy folder of your robot project

3. Deploy your robot code

The exported file must end in ".json" and should be placed in the root directory of your deploy folder, the deploy folder structure should look like this:

/deploy elastic-layout.json ...

Downloading Your Layout

To download the layout to your dashboard, enter the File menu, and click Load Layout From Robot

Alternatively, you can use the shortcut Ctrl + D

A dialog will appear with 2 dropdown menus, one to select which layout to download, and another to select how you want to download the data.

The layout file dropdown will display the name of any file in the root of your robot project deploy directory that ends with .json, if you aren't seeing your layout, ensure that your file is in the root of your deploy directory and the file ends with .json

Download Modes

Overwrite

Keeps existing tabs that are not defined in the remote layout. However, any tabs that are defined in the remote layout will be overwritten locally.

For example, if your current layout has the tabs Teleoperated, Autonomous, and Testing, and your layout defines a tab named Testing, after downloading, any content that you have on the Testingtab will no longer exist and will be overwritten by whatever is on the remote layout tab.

Merge

Merge the downloaded layout with the existing one. If a new widget cannot be properly placed, it will not be added.

If your current layout has the tabs Teleoperated, Autonomous, and Testing, and your layout defines a tab named Testing, but the layout you are downloading also has a tab named Testing, any widgets you currently have on the Testing tab will remain, but new widgets will be added in spots that are not occupied.

Full Reload

Deletes the existing layout and loads the new one.

This is the same operation as opening a new layout locally, any widgets you have placed will be removed.

Shuffleboard API Migration Guide

Code-Driven Layouts

Migrating Shuffleboard API layouts to remote downloading layouts is simple:

1. Clear all tabs and widgets of your dashboard, it is recommended you save your layout to a safe location before doing this step

2. Connect to your robot to populate Elastic with the code-driven layout

3. Export your dashboard layout

4. Set up the remote layout downloading as described here

After migrating your layout, it is advised to remove any Shuffleboard API-related code from your robot project.