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 how long something takes, 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 how much time has passed.

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

reset timer

The reset timer stack block resets the timer to zero. This can be used to start timing a new part of a project without restarting the whole project.

The reset timer stack block.

  reset timer

Parameters	Description
	This block has no parameters.

Example

  when started
  [Display the time the drone takes to climb upwards.]
  take off to [500] [mm v] ▶
  reset timer
  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 reporter block reports the time since the timer was last reset, as a decimal in seconds. The timer is automatically reset at the start of a project. This block can be used to time how long it takes the drone to complete different actions.

The timer in seconds reporter block.

  (timer in seconds)

Parameters	Description
	This block has no parameters.

Example

  when started
  [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 hat block runs the attached stack of blocks after a specified amount of time.

The when timer hat block.

  when timer > [1] seconds

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