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show string show number show value show mood show image clear screen show ports on event is pressed was pressed pause until set light battery level
run stop reset set brake set inverted set regulated tank steer angle speed clear counts stop all motors
Sensors
on event pause until is pressed was pressed
angle rate reset
on event distance pause until
on event distance pause until
on event pause until is pressed was pressed set remote channel
Color
on color detected pause until color detected on light detected pause until light condition detected color light
play sound effect play sound effect until done play tone ring tone stop all sounds rest change tempo by set tempo note frequency beat set volume
seconds millis reset pause until
log log value send to screen
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repeat for while for of
if Boolean
assign change var var
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Calling Sequencing Variables Operators Statements Functions Classes
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Calling Sequencing Variables Operators Statements Functions Types Classes Interfaces Generics
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Getting Started
Try Use
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Wake Up! Make An Animation What Animal Am I? Music Brick Run Motors Tank ZigZag Touch to Run Touch Sensor Values What Color? Line Following Red Light, Green Light Reflected Light Measure Reflected Light Calibration Object Near? Security Alert
Coding
Autonomous Parking Object Detection Line Detection
Design Engineering
Make It Move Without Wheels Make It Smarter and Faster Make a System that Communicates
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Make a Sound Machine Make a Security Gadget
Documentation
About FAQ Projects GitHub Troubleshoot EV3 Manager Bluetooth Forum LEGO Support FIRST LEGO League
Reference
show string show number show value show mood show image clear screen show ports on event is pressed was pressed pause until set light battery level
run stop reset set brake set inverted set regulated tank steer angle speed clear counts stop all motors
Sensors
on event pause until is pressed was pressed
angle rate reset
on event distance pause until
on event distance pause until
on event pause until is pressed was pressed set remote channel
Color
on color detected pause until color detected on light detected pause until light condition detected color light
play sound effect play sound effect until done play tone ring tone stop all sounds rest change tempo by set tempo note frequency beat set volume
seconds millis reset pause until
log log value send to screen
Blocks
On Start
repeat for while for of
if Boolean
assign change var var
Math JavaScript blocks Custom blocks
Python
Calling Sequencing Variables Operators Statements Functions Classes
JavaScript
Calling Sequencing Variables Operators Statements Functions Types Classes Interfaces Generics
Types
Number String Boolean Array Function
Developers
Command Line Interface Visual Studio Code support Blocks Embed
Getting Started
Try Use
Tutorials
Wake Up! Make An Animation What Animal Am I? Music Brick Run Motors Tank ZigZag Touch to Run Touch Sensor Values What Color? Line Following Red Light, Green Light Reflected Light Measure Reflected Light Calibration Object Near? Security Alert
Coding
Autonomous Parking Object Detection Line Detection
Design Engineering
Make It Move Without Wheels Make It Smarter and Faster Make a System that Communicates
Maker
Make a Sound Machine Make a Security Gadget

pause Until Light Condition Detected

Wait until a particular light condition is detected.

sensors.color1.pauseUntilLightDetected(LightIntensityMode.Reflected, Light.Dark)

You can wait for a change in either ambient or reflected light. This event happens when the sensor detects light going to dark or to bright. You choose what condition you will wait for.

Parameters

  • mode: lighting mode to use for detection. This is for either ambient or reflected light.
  • condition: the condition that the light changed to: dark or bright.

Example

Wait for the ambient light to go dark, then show an expression on the screen.

brick.showString("Waiting for dark", 1)
sensors.color1.pauseUntilLightDetected(LightIntensityMode.Reflected, Light.Dark)
brick.clearScreen()
brick.showImage(images.expressionsSick)

See also

on light detected

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