pxt-calliope/docs/reference/led/set-brightness.md

Set Brightness

Make the LED screen as bright as you say when it is turned on.

led.setBrightness(121)

Parameters

• value is a number that means how bright the screen is when it is turned on, from 0 (darkest) to 255 (brightest). For example, the number 127 means the screen is halfway bright when it is turned on.

~ hint

The brightness is not supported in the simulator. You will need to try it on the @boardname@ itself!

Example: change brightness

This program makes the screen brightness 100% (255). Then it turns on the center LED (2, 2), waits for one second, and then sets the screen brightness to 50% (128):

led.setBrightness(255)
led.plot(2, 2)
basic.pause(1000)
led.setBrightness(led.brightness() / 2)

See also

brightness, fade in, fade out, LED screen