Coder Cards

The VEX 123 Coder Cards reference explains what each Coder Card does and how it can be used in a project. The Coder and Coder Cards offer a screen-free method for coding the 123 Robot. Each Coder Card represents a command, and when inserted into the Coder, it will instruct the 123 Robot to complete a behavior.

Use this reference when you want to understand a card before adding it to a project, or compare similar cards of the same type.

Building a Project with the Coder

• Every project begins with the when start 123 card in the top slot of the Coder, marked with a white arrow.

• Slide more cards into the numbered slots below it. The Coder reads the project from top to bottom.

• Press the Start button on the Coder to run the project. The light beside each slot glows green as the Coder reads that card.

• Change cards only when the 123 Robot has stopped running the project.

Card Types

Each type of Coder Card is a different color.

Card Type	Color	What the cards do
Motion	Blue	Drive and turn the 123 Robot.
Sound	Pink	Control sounds from the 123 Robot.
Looks	Purple	Control the color that the indicator light in the center of the 123 Robot will glow.
Control	Orange	Control the flow of the project and allow the 123 Robot to make decisions.
Event	Red	Start, loop, or end a 123 project.
Action	Green	Enact a series of movements and sounds from the 123 Robot.
Time	Gray	Control a focused amount of time for the 123 Robot to wait until the following action is executed.

How to Read a Card Entry

Each card entry includes the following parts:

• Card description - Explains what the card does.

• Card image - Shows what the card looks like.

• Example - Shows one way the card can be used in a project, with the cards in order from the top slot of the Coder to the bottom.