pxt-calliope/docs/getting-started.md

Getting started

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Are you ready to build cool BBC micro:bit programs?

Here are some challenges for you. Arrange the blocks in the editor to make real programs that work!

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Use the Basic drawer in the editor (to the left) to drag out and arrange three blocks (two show leds and one forever block) to create this program:

basic.forever(() => {
    basic.showLeds(`
        . . . . .
        . # . # .
        . . . . .
        # . . . #
        . # # # .
        `)
    basic.showLeds(`
        . . . . .
        . . . . .
        . . . . .
        . . . . .
        . . . . .
        `)
});

When this program runs, you will see a smiley face, then a blank screen, then a smiley again -- it never stops! (That's because of the forever block.)

Click Compile to move your program to the BBC micro:bit! Make sure to follow the instructions.

NEXT: THE SCREEN