54 lines
1.1 KiB
Markdown
54 lines
1.1 KiB
Markdown
# night light challenges
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Coding challenges for night light.
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## Before we get started
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Complete the following [guided tutorial](/lessons/night-light/activity), your code should look like this:
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```blocks
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led.setBrightness(255)
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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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input.onButtonPressed(Button.A, () => {
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led.setBrightness(64)
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})
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```
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### Challenge 1
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### @video td/videos/night-light-2
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What if we want to turn off all the LEDs? Let's do this by setting the brightness to `0` when button `B` is pressed. Add an event handler with `on button pressed(B)` add `set brightness(0)` to turn off the LEDs.
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```blocks
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led.setBrightness(255)
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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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input.onButtonPressed(Button.A, () => {
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led.setBrightness(64)
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})
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input.onButtonPressed(Button.B, () => {
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led.setBrightness(0)
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})
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```
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**Challenge 3**
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Add an event handler with `on shake` to change the LED brightness back to a `255`.
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* `Run main` your script to see the LEDs change brightness.
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