Enable Test Mode in the Driver Station by clicking on the "Test" button and setting "Enable" on the robot. When doing this, the SmartDashboard display will switch to test mode (LiveWindow) and will display the status of any actuators and sensors used by your program.

All sensors and actuators will automatically be displayed on the SmartDashboard in test mode and will be named using the object type (such as Jaguar, Analog, Victor, etc.) with the module number and channel number with which the object was created. In addition, the program can explicitly add sensors and actuators to the test mode display, in which case programmer-defined subsystem and object names can be specified making the program clearer. This example illustrates explicitly defining those sensors and actuators in the highlited code.

This is the output in the SmartDashboard display when the robot is placed into test mode. In the display shown above the objects listed as Ungrouped were implicitly created by WPILib when the corresponding objects were created. These objects are contained in a subsystem group called "Ungrouped" (1) and are named with the device type (Analog, Jaguar in this case), and the module and channel numbers. The objects shown in the "SomeSubsystem" (2) group are explicitly created by the programmer from the code example in the previous section. These are named in the calls to LiveWindow.addActuator() and LiveWindow.AddSensor(). Explicitly created sensors and actuators will be grouped by the specified subsystem.