Timer

Introduction

The VEX AIR Drone Controller’s timer keeps track of elapsed time from the start of a project. It can be used to measure durations, trigger events after a set time, or reset for new timing operations.

Below is a list of all available blocks:

• reset timer — Resets the timer to zero.

• timer in seconds — Reports the current elapsed time since the project started in seconds.

• when timer — Runs a stack of blocks after the timer exceeds a specified time.

reset timer

The reset timer block resets the timer to zero.

The reset timer stack block.

  reset timer :: custom-orientation

Parameters	Description
	This block has no parameters.

Example

  when started :: hat events
  [Display the time the drone takes to climb upwards.]
  take off to [500] [mm v] ▶
  reset timer :: custom-orientation
  climb [up v] for [500] [mm v] ▶
  print [Time elapsed:] on screen ▶
  print (timer in seconds) on screen ▶

timer in seconds

The timer in seconds block reports the current elapsed time of the timer in seconds.

The timer in seconds reporter block.

  (timer in seconds)

Parameters	Description
	This block has no parameters.

Example

  when started :: hat events
  [Play a sound after 4 seconds.]
  wait until < (timer in seconds) [math_greater_than_or_equal_to v] [4] >
  print (timer in seconds) on screen ▶
  play sound [success v] ▶

when timer

The when timer block activates the attached stack of blocks after a specified amount of time.

The when timer hat block.

  when timer > [1] seconds :: hat events

Parameters	Description
time	Specifies the number of seconds before the attached stack of blocks starts. Accepts both whole and decimal numbers.

Example

  when timer > [4] seconds :: hat events
  [Play a sound after 4 seconds.]
  print (timer in seconds) on screen ▶
  play sound [success v] ▶