2016-03-26 00:47:20 +01:00
# flashing heart blocks lesson
2016-04-02 01:22:47 +02:00
Learn how to create LED images with a global variable.
2016-03-26 00:47:20 +01:00
## Topic
Pause
## Quick links
2016-04-13 17:27:45 +02:00
* [activity ](/lessons/flashing-heart/activity )
* [quiz ](/lessons/flashing-heart/quiz )
* [quiz answers ](/lessons/flashing-heart/quiz-answers )
* [challenges ](/lessons/flashing-heart/challenges )
2016-03-26 00:47:20 +01:00
## Prior learning/place of lesson in scheme of work
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.
## Documentation
2016-04-05 07:33:13 +02:00
```cards
basic.forever(() => {})
2016-03-30 00:59:00 +02:00
basic.showLeds(`
. . . . .
. . . . .
. . # . .
. . . . .
. . . . .
`)
basic.pause(100)
basic.clearScreen()
```
2016-03-26 00:47:20 +01:00
2016-03-30 00:59:00 +02:00
## Objectives
2016-03-26 00:47:20 +01:00
2016-03-30 00:59:00 +02:00
* learn how to repeat code in the background forever
* learn how to show LEDs on the LED screen
* learn how to pause your code for the specified number of milliseconds
* learn how to turn off all the LED lights on the LED screen
