Press a Button to Light One of Buzz's Eyes

Code

The code in the editor below is ready to run! Plug Buzz in to your computer's USB port with the cable and hit 'Upload Your Code!' to see what it does. Change something in the code, like a delay or pin number. Try to add something new to the program - it's yours to tinker with! You can always press the 'Restore' button to return the code to the working example.

//Press a button to light up one of Buzz's eyes void setup(){ pinMode(3,OUTPUT); //LED light pinMode(12,INPUT_PULLUP); //Button } void loop(){ if(digitalRead(12)==LOW){ //If the button reading is LOW (the button is pressed) digitalWrite(3,HIGH); //turn on the LED light } //You have to unplug Buzz to get the LED to turn off again! } // (c) 2023 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!

Make the program turn on 2 LEDs when the button is pressed. Hint: You'll add a digitalWrite function.

Add a speaker and start playing a tone when the button is pressed. Heads up: The next project covers how to do this if you need a hand.

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.

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