blink challenges

Coding challenges for the blink tutorial #docs #challenges

Before we get started

Complete the blink activity and your code will look like this:

basic.forever(() => {
    led.plot(2, 2)
    basic.pause(200)
    led.unplot(2, 2)
    basic.pause(200)
})

Challenge 1

@video td/videos/blink-1

Let's display a "smiley face" on the screen! We'll start by plotting the eyes.

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!

basic.forever(() => {
    led.plot(2, 2)
    led.plot(1, 1) 
    led.plot(3, 1) 
    basic.pause(200)
    led.unplot(2, 2)
    led.unplot(1, 1) 
    led.unplot(3, 1) 
    basic.pause(200)
})

Challenge 2

@video td/videos/blink-2

Let's add the code to plot the mouth by plotting and unplotting (1,4), (2,4) and (3,4).

basic.forever(() => {
    led.plot(2, 2)
    led.plot(1, 1)
    led.plot(3, 1)
    led.plot(1, 4) 
    led.plot(2, 4) 
    led.plot(3, 4) 
    basic.pause(200)
    led.unplot(2, 2)
    led.unplot(1, 1)
    led.unplot(3, 1)
    led.unplot(1, 4) 
    led.unplot(2, 4) 
    led.unplot(3, 4) 
    basic.pause(200)
})

Challenge 3

@video td/videos/blink-3

Let's keep using led->plot to convert the mouth into a smiley face.

Challenge 4

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.

Challenge 5

Create your own image by changing the coordinates in led->plot!

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