WestlakeLEARN
FRC / LabVIEW

First Robotics Competition

FRC / LabVIEW

01 · Module 1: LabVIEW Project Basics
  • Robot Project Structure
02 · Module 2: TeleOp Control
  • TeleOp VI Basics
03 · Module 1: Autonomous Flow
  • Autonomous State Flow
04 · Module 2: Safety and Recovery1/1
  • Motor Safety and Recovery

04 / Module 2: Safety and Recovery

Motor Safety and Recovery

Keep LabVIEW robot code recoverable during practice.

35 minWalkthroughModule 2: Safety and Recovery

You will

  1. 01Add a clear disabled or safe state.
  2. 02Know where outputs are forced to zero.
  3. 03Recognize loop code that can stop responding.

Safety is a code path

The robot should have an obvious place where outputs are set safe. That makes recovery easier when testing mechanisms or returning from autonomous.

Bad loops look like robot lag

If a loop blocks or runs too slowly, driver control can feel delayed. Keep long waits out of TeleOp and use explicit state instead.

LabVIEW habit

Follow the wire, not the screen position. Dataflow decides when a node can run.

Easy mistake

Initialize robot hardware in Begin.vi so other VIs receive the same reference.

Safety walkthrough

LabVIEW diagram viewer

Block diagram walkthrough

Hover a VI. Press Ctrl-H for help.

Press enter or space to select a node. You can then use the arrow keys to move the node around. Press delete to remove it and escape to cancel.
Press enter or space to select an edge. You can then press delete to remove it or escape to cancel.
Block diagram walkthrough

Practice

Trace where drivetrain outputs become zero, then add a dashboard value showing the current state.

Checks

  • Outputs go to zero in the final state.
  • The current state is visible during testing.
  • TeleOp still responds immediately after the change.

Check your understanding

Module check

What should you check first when robot code does not behave as expected?

0 of 1 answered

References

WPILib LabVIEW DocsOfficial FRC LabVIEW programming documentation.FRC LabVIEW ResourcesTutorials, examples, and LabVIEW learning resources.Recovering from bad loopsTroubleshooting unresponsive LabVIEW robot code.

Finished reading?

Mark this lesson complete.

Autonomous State Flow