pxt-calliope/docs/reference/basic/show-leds.md
2016-03-25 16:47:20 -07:00

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# Show LEDs
Display an image on the BBC micro:bit's [LED screen](/microbit/device/screen).
```sig
basic.showLeds(`
. . . . .
. # . # .
. . # . .
# . . . #
. # # # .
`
)
```
### Parameters
* ``leds`` - a series of LED on/off states that form an image (see steps below)
* (optional) ``ms`` - [Number](/microbit/reference/types/number) - time to wait after displaying image. In blocks, ``ms`` is 400 by default.
### Example - Block Editor
1. Open the `basic` category and select the `show leds` blocks.
```blocks
basic.showLeds(`
# # . # #
# # . # #
. # # # .
. # . # .
. # . # .
`
)
```
In JavaScript, the led off is represented by a `.` and the led on by a `#` character.
### Lessons
[smiley](/microbit/lessons/smiley), [flashing heart](/microbit/lessons/flashing-heart), [magic logo](/microbit/lessons/magic-logo)
### See also
[plot leds](/microbit/reference/led/plot-leds), [show animation](/microbit/reference/led/show-animation)