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Event-Based Programming: Communication Among Instructions - Python

A small dog sits on a doormat with a coiled leash in front of it, looking at the camera as though asking if it is time to go out.

Event-based Programming

If your dog brings you his leash or sits by the door, he’s letting you know that he needs to go outside. In school, when your teacher asks a question and sees you raise your hand, they believe you know the answer and would like to answer the question. These behaviors are also known as “triggers.”


Your dog knows that bringing you his leash or sitting by the door is the trigger that lets you know he needs to go outside. So, when you see him sitting by the door with his leash, you react to the trigger by taking him outside. Raising your hand is the trigger that lets the teacher know you would like to answer the question. The teacher then reacts to the trigger by calling upon you.


Event-based programming in robotics is when certain robot behaviors trigger the robot to do certain things or react to certain triggers.
 

Controller: Clawbot Control


Now, you’re ready to explore the Clawbot Controller with Events example project and use the Controller to operate the Clawbot, its Arm, and its Claw, all at the same time!

An Icon reads Clawbot Controller with Events on the bottom with a blue Controller with clawbot above.
Ensure you have the hardware required and your engineering notebook. Open VEXcode V5.

Materials Required:
Quantity Materials Needed
1

Clawbot
1

Charged robot battery
1

VEX V5 Radio
1

Controller
1

Tether Cable
1

VEXcode V5
1

USB Cable (if using a computer)
1

Engineering Notebook

Before you begin the activity...

Do you have each of these items ready? The Builder should check each of the following:

  • Are all the motors and sensors plugged into the correct port?

  • Are the smart cables fully inserted into all of the motors?

  • Is the battery fully charged?

  • Is the Controller paired with the Robot Brain?

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