50 lines
1.1 KiB
Markdown
50 lines
1.1 KiB
Markdown
# flashing heart blocks lesson
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Learn how to create LED images with a global variable. #LED #screen #plot #docs
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### @video td/videos/flashing-heart-0
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## Topic
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Pause
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## Quick links
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* [activity](/microbit/lessons/flashing-heart/activity)
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* [quiz](/microbit/lessons/flashing-heart/quiz)
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* [quiz answers](/microbit/lessons/flashing-heart/quiz-answers)
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* [challenges](/microbit/lessons/flashing-heart/challenges)
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## Prior learning/place of lesson in scheme of work
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Learn how to `show LEDs` by showing an image on the LED screen. We will be learning how to create a blinking app using a forever loop as well as simple commands, such as show LEDs, pause, and clear screen.
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## Documentation
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```docs
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basic.forever(() => {
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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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basic.pause(100)
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basic.clearScreen()
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```
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## Objectives
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* learn how to repeat code in the background forever
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* learn how to show LEDs on the LED screen
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* learn how to pause your code for the specified number of milliseconds
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* learn how to turn off all the LED lights on the LED screen
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