Variable LED Wing Pixels

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.


/* Use a variable to light each of Buzz's wing pixels one at a time */ #include "LEDStrip.h" //The LEDStrip.h library gives your code access to special functions exclusive to the LED Pixels LEDStrip wings = LEDStrip(16, A4, A5); //Set up the pixels by defining how many pixels (16) and where it's connected to Buzz (always A4 and A5) int pixelCount = 0; //Create a variable called 'pixelCount' that is an integer (whole number) and starting value of 0 void setup(){} void loop() { wings.setPixel(pixelCount,200); //set the pixel that is equal to 'pixelCount' to a color value of 200 wings.draw(); //send the setPixel data to the wings pixelCount++; //increase pixelCount by one so the next delay(1000); //Wait 1000 milliseconds (1 second) before moving to the next pixel if(pixelCount==16){ //If the pixelCount variable reaches 15 (remember, pixels are numbered 0 - 15) pixelCount=0; //reset pixelCount to 0 so the LEDs start lighting up again wings.clear(); //turn off the pixels that are currently lit up } } // (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!

Buzz’s LED Pixel Color Spectrum

Use this spectrum to estimate the color values you'll need for your 'setPixel' arguments to achieve your favorite color!

Challenges

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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?




2. Which syntax ends a single code command?