pxt-calliope/docs/lessons/smiley/activity.md

# smiley blocks activity

Learn to design a blinking image. 

## ~avatar avatar



Welcome! This tutorial will help you make a smiley face blink. Let's get started!

## ~

Create an animation with an image displaying a smiley face and the next image with no LEDs lit up. This will make it look like the smiley face is blinking as the display switches between images.

```blocks
basic.showLeds(`
    . # . # .
    . # . # .
    . . . . .
    # . . . #
    . # # # .
    `)
basic.showLeds(`
    . . . . .
    . . . . .
    . . . . .
    . . . . .
    . . . . .
    `)
```

## ~avatar boothing

Excellent, you're ready to continue with the [challenges](/lessons/smiley/challenges)!

## ~