Migrate docs from the other repo

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Michal Moskal
2016-03-25 16:47:20 -07:00
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# magic logo activity
Show an image that points up when the logo is up.
### ~avatar avatar
### @video td/videos/magic-logo-0
Welcome! This tutorial will help you display an arrow pointing toward the logo! Let's get started.
### ~
Using the **accelerometer** sensor, the micro:bit can detect when the **logo** is oriented **up**. We call that the **logo up** event. We will use `on logo up` to register an event handler that will run when the **logo up** event happens.
```blocks
input.onLogoUp(() => {
})
```
When the micro:bit goes logo up, the code nested under the `on logo up` function will run. Let's add a line of code to show LEDs in there.
```blocks
input.onLogoUp(() => {
basic.showAnimation(`
. . # . .
. # # # .
# # # # #
. . # . .
. . # . .
`)
})
```
Run your code and try to turn around the micro:bit to see the **logo up** event in action!
### ~avatar boothing
Excellent, you're ready to continue with the [challenges](/microbit/lessons/magic-logo/challenges)!
### ~

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# magic logo challenges
Coding challenges for magic logo.
## Before we get started
Complete the [magic logo](/microbit/lessons/magic-logo/activity) activity and your code will look like this:
```blocks
input.onLogoUp(() => {
basic.showAnimation(`
. . # . .
. # # # .
# # # # #
. . # . .
. . # . .
`)
})
```
### Challenge 1
How about when the logo is down? We should display an arrow pointing downward!
### @video td/videos/magic-logo-1-2
```blocks
input.onLogoUp(() => {
basic.showAnimation(`
. . # . .
. # # # .
# # # # #
. . # . .
. . # . .
`)
})
input.onLogoDown(() => {
basic.showAnimation(`
. . # . .
. . # . .
# # # # #
. # # # .
. . # . .
`)
})
```
### Challenge 2
Use the `on screen up` event to show a spinning arrow when the screen is turned up.
### Challenge 3
Display another animation using the `on screen up` event.