Event#

Introduction#

The red Event cards start or stop a 123 project.

Below is a list of available cards:

  • when start 123 – Starts the project when the Start button on the Coder is pressed.

  • go to start – Loops back to the when start 123 card to repeat the project until it is stopped.

  • stop – Stops and ends the project.

when start 123#

The when start 123 card starts the project when the Start button on the Coder is pressed. A project must always begin with the when start 123 card in the top slot of the Coder, marked with a white arrow.

A red Coder Card that reads when start 123.

Example

Press the Start button on the Coder to drive forward 1 step.

A red Coder Card that reads when start 123.

A blue Coder Card that reads drive 1.

go to start#

The go to start card makes the Coder loop back to the when start 123 card and run the project again. Together, the two cards make a forever loop: use go to start to repeat a set of actions until the project is stopped. Press the Stop button on the Coder to stop the project.

A red Coder Card that reads go to start.

Example

Drive forward 1 step and turn right, over and over, until the Stop button is pressed.

A red Coder Card that reads when start 123.

A blue Coder Card that reads drive 1.

A blue Coder Card that reads turn right.

A red Coder Card that reads go to start.

stop#

The stop card stops and ends the project. Any cards following the stop card will not run.

A red Coder Card that reads stop.

Example

If an object is in front of the robot, end the project. If not, drive forward 2 steps.

A red Coder Card that reads when start 123.

An orange Coder Card that reads if object.

A red Coder Card that reads stop.

An orange Coder Card that reads end if.

A blue Coder Card that reads drive 2.

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