Light a Single Wingspan LED Pixel

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.

If you haven't attached Buzz's wings yet or you have some trouble with this project being reliable, revisit the "build" project in Chapter 0 to ensure he's set up correctly.

// Turn on a single rainbow pixel of Buzz's wings #include "LEDStrip.h" //The LEDStrip.h library gives your code access to special functions exclusive to LED rainbow pixels LEDStrip wings = LEDStrip(16, A4, A5); //Set up the wings by defining how many pixels (16) and how they are connected. //The info inside these parentheses will never change when using Buzz the Code Bug void setup(){} void loop() { wings.setPixel(0, 200); //set the pixel you want to light (0-15) and the color (0-300) wings.draw(); //Send the setPixel values to the wings } // (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

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!

Change the color of the pixel that is lit up.

Change which pixel is lit up by changing the first argument inside the setPixel( ) function.

Type another setPixel() function before the draw() function and use a different pixel number so you can light up more than one pixel.

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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