Maker Screen Alarm

Use the ‘Parts List’ image along with the component cards in your box to correctly plug in the electronic hardware to your Maker Board. The colorful dots next to the legs of the components match up to the ports where that leg should go on Maker Board’s ports.

Code

The code in the editor below is ready to run! Plug in the electronic components just like the Parts List card above, connect Maker Board to your computer's USB port with the cable, and hit 'Upload Your Code!'. Tinker with the code and change something! If you get stuck, you can hit the 'Restore' button to make the code go back to the working example.

/*Write an attention-getting message on Maker Screen with a flashing backlight and a beeping tone */ #include "MakerScreenXVI.h" //A code library enables new functions to be used with the screen MakerScreenXVI lcd; //the library name is followed by the 'name' you give the LCD screen. Here it is 'lcd' void setup() { lcd.begin(); //.begin() 'sets up' the screen. You'll always need it when using Maker Screen pinMode(A5,OUTPUT); //Speaker } void loop() { lcd.backlightOn(); //Turn the LCD backlight on tone(A5,500); //Play a tone of 500 hertz lcd.print("Look over here!!"); //16 characters including spaces can fit on one line of Maker Screen delay(1000); //Wait 1000 milliseconds (1 second) with the backlight on lcd.backlightOff(); //Turn off the LCD backlight noTone(A5); //Stop the tone delay(1000); //Wait 1000 milliseconds before restarting the loop } //(c)2019 Let's Start Coding. License: www.letsstartcoding.com/bsdlicense

Walkthrough Video

Watch the video for a line-by-line explanation of how the example program works. Then you'll be ready to make some changes of your own!

Challenges

Can you complete the challenges? Change the code in your code editor above. Upload your code to see the effect when you're finished. Complete a challenge? Check it off the list!

Update the 'alarm' message on the Maker Screen.

Update the delays for a faster or slower alarm. How small can you make the delays and still see the message clearly?

Update the tones that play as the alarm is sounding. What tone value catches your attention best?

Add an LED light to the project that flashes when the backlight flashes.

Concepts

These are the new code concepts covered in this example program. To become a great coder, read through these concepts to learn new vocabulary.

Quiz

If you're having trouble, try to run an experimental program or look at the example code to help you find the answer.

1. Which syntax ends the entire 'void loop' function?

semicolon ;
parentheses )
closing curly brace }

2. Which syntax ends a single code command?

semicolon ;
closing curly brace }
period .

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