Student questions

Answers about access, simulation, programming and course behavior.

Checked 2026-10-16

Can I start without an arm?

Yes. Theory and exercises supported by simulation do not require hardware. Physical assembly and mechanical checks remain separate practice.

Does everyone need a subscription?

There is no universal requirement. Access may come from an active class, a role or a subscription; paywall behavior also depends on server configuration. Check your access.

Can I write programs?

Yes. Open Block code or ROS2 lab in Tools. A plugin SDK is available for extending the application.

Is the final project missing?

Module 11 is implemented with theory and practical stages. If you cannot access it, read the message shown for your account and deployment.

Does module 9 really train a neural network?

The exercise covers data, labeling and choosing when to stop, but its training curves are simulated. They are not measured results from training your own model.

Can I switch computers?

Sign in to the same account and check progress synchronization. Grant device permissions on the new computer; locally loaded plugins are separate from server data.

Why did the arm become limp?

Motor holding torque was released. Some procedures require this for manual positioning, but an unsupported arm can drop. Support it in a safe pose.

Does everything work offline?

Plan for internet access for sign-in, data and resource downloads. Browser caching is not a guaranteed offline mode.

Controls

Button or field	Action and result
A button cannot be clicked	Check required fields, the selected connection and whether a request is still running. The reason depends on the screen: for example, an empty answer prevents submission and a missing camera prevents Policies recording.
Connected, but no physical movement	Check the transport: Virtual controls the model. On a physical arm, also check power, IDs and the selected role.
You need to save a result	Use the relevant tool’s export. Share copies a link and Create movie creates video; neither replaces project JSON.
You need to repeat an assignment	You can reopen a completed lesson step. For returned homework, correct the answer and use Hand in again.

See the tool article for a specific button. To compare similar actions, see the file reference and stopping and torque.