Single Speaker Beep

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.

/* Beep a tone one time. Unplug and replug your power cable to hear it again! */ void setup(){ pinMode(A5,OUTPUT); //Set port A5 to receive power tone(A5,400); //Send a tone of 400 hertz (hz) to the speaker plugged into port A5 delay(1000); //Delay 1000 milliseconds (1 second) with the tone playing noTone(A5); //Turn off any tones playing on port A5 } void loop(){} //Nothing in the loop, so no code will repeat // (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 delay for your beep. What's the smallest delay where you can still hear the tone?

Change the second number inside the tone( ) function to play a different pitch on the speaker. Don't forget to upload the code to hear it beep!

Add two slashes (//) to the left of the line of code that has the noTone( ) function to see what happens.

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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