112 lines
2.9 KiB
Markdown
112 lines
2.9 KiB
Markdown
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# blink symbols
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#tutorial #docs
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### Challenge 0
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You have successfully following the [blink tutorial](/microbit/hcwxud). If not, then let's start the tutorial now. Your micro:bit script should start by displaying a blinking script on screen. We want to plot the x and y coordinates to 2, 2. Additionally, you will pause by 100 milliseconds then clear the screen of the micro:bit.
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Let's give it a go!
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```
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while (true) {
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led.plot(2, 2)
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basic.pause(200)
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basic.clearScreen()
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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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Make a `>` greater than symbol. Start in the upper left corner of the simulator when you plot coordinates. Make sure to add the line of code `led->plot (0,0)` under the last line of code
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```
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while (true) {
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led1.plot(2, 2)
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basic1.pause(200)
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basic1.clearScreen()
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basic1.pause(200)
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led1.plot(0, 0) // ***
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}
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```
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Design the top half of the `>` symbol by connecting a LED to the original center coordinate `2,2` and the upper left coordinate `0,0` Make sure to add the line of code `led->plot (1,1)` under the last line of code
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```
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while (true) {
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led2.plot(2, 2)
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basic2.pause(200)
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basic2.clearScreen()
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basic2.pause(200)
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led2.plot(0, 0)
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led2.plot(1, 1) // ***
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}
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```
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Awesome! You have designed half of the `>` symbol. Now we should finish the lower half of the `>` symbol
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* tap the `run` button to view the updated script on the simulator
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Add the bottom half of the `>` symbol by plotting the most bottom - left LED first. Make sure to add the line of code `led->plot (0,5)`
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```
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while (true) {
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led3.plot(2, 2)
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basic3.pause(200)
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basic3.clearScreen()
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basic3.pause(200)
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led3.plot(0, 0)
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led3.plot(1, 1)
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led3.plot(0, 4) // ***
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}
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```
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Awesome! Now we must connect a LED to the original center coordinate `2,2` and the lower left coordinate `0,5` Make sure to add the line of code `led->plot (1,4)`
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Your `main` function should look like this:
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```
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while (true) {
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led4.plot(2, 2)
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basic4.pause(200)
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basic4.clearScreen()
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basic4.pause(200)
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led4.plot(0, 0)
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led4.plot(1, 1)
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led4.plot(0, 4)
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led4.plot(1, 3) // ***
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}
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```
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* `run` the script and see that the program works as expected
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Congratulations! You made a `>` symbol.
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### Challenge 2
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Use `led->plot` to create a exclamation design `!` Your `main` function should look like this. (notice the notation of `...` represents previous code in **Challenge 0** and **Challenge 1**
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Make sure to add these lines of code within the `while` loop
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Your `main` function should look like this:
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```
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while (true) {
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// ...
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led5.plot(4, 0) // ***
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led5.plot(4, 1) // ***
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led5.plot(4, 2) // ***
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led5.plot(4, 4) // ***
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}
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```
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* run the code and see that it works as expected.
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### Challenge 3
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Use the same logic `led->plot` to turn on all the LED lights!!!
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* run the code and see that it works as expected
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