2_6 Rainbow Sound and Light Show

Rainbow Sound and Light Show

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.


/* Turn on LED pixels of Code Lab Mini's rainbow with a different tone for each one */ #include "LEDStrip.h" //The LEDStrip.h library gives your code access to special functions exclusive to the LED rainbow LEDStrip rainbow = LEDStrip(15, 13, A5); //Set up the rainbow by defining how many pixels (15) and how they are connected. //The info inside these parentheses will never change when using the Code Lab Mini add-on void setup() { pinMode(2,OUTPUT); //Speaker } void loop() { rainbow.setPixel(0, 50); //Set pixel 0 to a color value of 50 tone(2,50); //Play a tone of 50 hertz rainbow.draw(); //Send the setPixel values to Code Lab Mini's rainbow delay(1000); //Wait 1000 milliseconds (1 second) with the tone playing rainbow.setPixel(3, 150); //Set pixel 3 to a color of 150 tone(2,150); //Play a tone of 150 hertz rainbow.draw(); //Send the setPixel values to Code Lab Mini's rainbow delay(1000); //Wait 1000 milliseconds (1 second) with the tone playing rainbow.setPixel(7, 225); //Set pixel 7 to a color of 225 tone(2,225); //Play a tone of 225 hertz rainbow.draw(); //Send the setPixel values to Code Lab Mini's rainbow delay(1000); //Wait 1000 milliseconds (1 second) with the tone playing rainbow.clear(); //Clear all the pixels - make them have no color rainbow.draw(); //Send the .clear() function to the rainbow. noTone(2); //Stop the tone delay(1000); //Wait 1000 milliseconds before restarting the loop } //This program is just a starting point - there are many more pixels and tones to try! //(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 challenge? 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!