96 lines
1.8 KiB
Markdown
96 lines
1.8 KiB
Markdown
# Flashing Heart
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## Introduction @unplugged
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Learn how to use the LEDs and make a flashing heart!
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## Step 1 @fullscreen
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Place the ``||basic:show leds||`` block in the ``||basic:on start||`` block and draw a heart.
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```blocks
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basic.showLeds(`
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. # . # .
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# # # # #
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# # # # #
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. # # # .
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. . # . .`
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);
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```
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## Step 2 @fullscreen
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Place another ``||basic:show leds||`` block under the heart to make it blink. Check in the simulator to see the heart blink.
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```blocks
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basic.showLeds(`
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. # . # .
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# # # # #
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# # # # #
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. # # # .
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. . # . .`);
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basic.showLeds(`
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. . . . .
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. . . . .
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. . . . .
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. . . . .
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. . . . .`);
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```
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## Step 3 @fullscreen
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But we only see the heart blink once. To have it continue to blink, move the blocks inside the ``||basic:forever||`` to make the animation repeat.
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```blocks
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basic.forever(() => {
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basic.showLeds(`
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. # . # .
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# # # # #
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# # # # #
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. # # # .
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. . # . .`
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);
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basic.showLeds(`
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. . . . .
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. . . . .
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. . . . .
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. . . . .
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. . . . .`
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);
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})
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```
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## Step 4 @fullscreen
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Now let's get fancy and place more ``||basic:show leds||`` blocks to create your own animation.
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```blocks
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basic.forever(() => {
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basic.showLeds(`
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. # . # .
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# # # # #
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# # # # #
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. # # # .
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. . # . .`
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);
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basic.showLeds(`
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. # . # .
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# . # . #
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# . . . #
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. # . # .
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. . # . .`);
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basic.showLeds(`
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. . . . .
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. # . # .
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. # # # .
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. . # . .
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. . . . .`);
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})
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```
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## Step 5 @fullscreen
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If you have a @boardname@ connected, click ``|Download|`` to transfer your code and watch the hearts flash!
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