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Getting Started with Fuse

What is Fuse?

Fuse is a virtual circuit builder and programming platform for littleBits. When used with the codeBit, it allows you to build circuits, program them, and run your projects directly on your devices.

Is Fuse compatible with mobile devices?

No, Fuse is not fully compatible with the mobile version of the Chrome browser. It works best on laptops, Chromebooks, or desktop computers with Chrome installed.

What can I do in the Fuse app?

  • Build virtual circuits

  • Program using Blocks or JavaScript

  • Run programs on the codeBit

  • Access activities and tutorials on littleBits Classroom

New in 2025:

Fuse can now pair with the littleBits w30 BLE bit. Follow this tutorial to learn how.

Which Kits are compatible with Fuse?

  • STEAM+ Coding Kit / Class Pack

  • Code Kit / Class Pack

  • Pro Library*

  • Individual codeBit

Is the Fuse app replacing the Code Kit app?

Yes. Starting in 2022, the Fuse app has fully replaced the Code Kit app. All Code Kit tutorials and inventions can now be found on Classroom.

Do I need a Classroom account to use Fuse?

No, a Classroom account is not required to use Fuse. However, an educator account is needed to save Workspaces and monitor student progress.