86 lines
1.7 KiB
Markdown
86 lines
1.7 KiB
Markdown
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# blink challenges
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Coding challenges for the blink tutorial #docs #challenges
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## Before we get started
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Complete the [blink](/microbit/lessons/blink/activity) activity and your code will look like this:
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```
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basic.forever(() => {
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led.plot(2, 2)
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basic.pause(200)
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led.unplot(2, 2)
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basic.pause(200)
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})
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```
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### Challenge 1
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### @video td/videos/blink-1
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Let's display a "smiley face" on the screen! We'll start by plotting the eyes.
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Add `led->plot (1,1)` and `led->plot(3,1)` under `led->plot(2,2)` ; then add `led->unplot(1,1)` and `led->unplot(3,1)` after pause. When you're ready, don't forget to run your code to try it out!
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```
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basic.forever(() => {
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led.plot(2, 2)
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led.plot(1, 1)
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led.plot(3, 1)
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basic.pause(200)
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led.unplot(2, 2)
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led.unplot(1, 1)
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led.unplot(3, 1)
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basic.pause(200)
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})
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```
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### Challenge 2
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### @video td/videos/blink-2
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Let's add the code to plot the mouth by plotting and unplotting `(1,4)`, `(2,4)` and `(3,4)`.
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```
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basic.forever(() => {
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led.plot(2, 2)
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led.plot(1, 1)
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led.plot(3, 1)
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led.plot(1, 4)
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led.plot(2, 4)
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led.plot(3, 4)
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basic.pause(200)
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led.unplot(2, 2)
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led.unplot(1, 1)
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led.unplot(3, 1)
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led.unplot(1, 4)
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led.unplot(2, 4)
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led.unplot(3, 4)
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basic.pause(200)
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})
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```
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### Challenge 3
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### @video td/videos/blink-3
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Let's keep using `led->plot` to convert the mouth into a smiley face.
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```` bitmatrix
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0 0 0 0 0
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0 1 0 1 0
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0 0 1 0 0
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1 0 0 0 1
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0 1 1 1 0
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````
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### Challenge 4
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Let's make it blink a bit faster. To do so, we need to reduce the amount of time used in ``basic->pause`` to ``100`` milliseconds.
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### Challenge 5
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Create your own image by changing the coordinates in `led->plot`!
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