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Two Scratch Bits and their cases.
Early Concept Design.

The Scratch Bit is a small round device[1] with 4 lights and a button. It was being developed in partnership with the LEGO foundation[2], although after being delayed, there has been no additional news about a possible future release. It was first previewed at Scratch Day @ MIT 2018.[citation needed]


The Scratch Bit was planned to release with 13 blocks: 6 hat blocks, 3 Boolean blocks and 4 reporter blocks.[3] They are pictured below:

  • when (moved v)::extension hat
  • when button pressed::extension hat
  • when tilted ( v)?::extension hat
  • when it gets (dark v)::extension hat
  • <at rest? :: extension>
  • <button pressed?::extension>
  • <tilted ( v)?::extension>
  • (spin::extension)
  • (speed::extension)
  • (brightness::extension)
  • (tilt angle ( v)::extension)


The Scratch Bit was planned to release with the following features:

  • Tilt Sensor: Changes the tilt values.
  • Light Sensor: Changes the light sensor value depending on the amount of light it detects.
  • Button: Can be pressed to control the button pressed value (true or false).
  • Accelerometer: Changes spin speed, movement speed and triggers jump block.

Example Uses

Some example uses can be found at this video.


In the photo at the top of the page, there are cases. Some cases have clips on them, while others have a small circular rubber pad, commonly known as a C-Stick, that is used like a joystick.


The blocks can be previewed online here. The original concept and blocks can be viewed here.

See Also


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