4_9 Random Rainbow Colors and Pixels

Random Rainbow Colors and Pixels

Code

The code in the editor below is ready to run! Plug Code Lab Mini in to your computer's USB port, make sure that your Code Lab Mini Rainbow Add-On (sold separately) is attached, 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 set up your Code Lab Mini Rainbow Add-On yet, visit Chapter 0 to watch a video showing you how to do that.


/* Set random LED rainbow pixels to random color values */ #include "LEDStrip.h" //The LEDStrip.h library gives your code access to special functions exclusive to the LED Pixels LEDStrip rainbow = LEDStrip(15, 13, A5); //Set up the strip by defining how many pixels (15) and where it's connected to Code Lab Mini (always 13 and A5) void setup(){} void loop() { rainbow.setPixel(random(0,15),random(0,300)); //Set a random pixel including 0-15 to a random color including 0-299 rainbow.draw(); //send the setPixel data to the rainbow to be displayed delay(1000); //Wait 1000 milliseconds before starting the loop 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!

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!