Tune LED Pixel Colors

/* Use the turn knob to control the color of the LED pixels */ #include "LEDStrip.h" //The LEDStrip.h library gives your code access to special functions exclusive to the LED Pixels LEDStrip pixels = LEDStrip(3, 13, 12); //Set up the pixels void setup() { pinMode(A0,INPUT); //turn knob } void loop() { int color = analogRead(A0); //Create a variable color that is an integer (whole number) and uses the analogRead of A0 as its starting value color = map(color,0,1023,0,299); //Because analogRead has a range of 0-1024 and the color range is only 0-299, use 'map' //map matches up two ranges of values. Now, a 1023 analogReading equals color 299. A 0 reading equals 0. A 512 reading equals about 150 pixels.setPixel(pixels.ALL,color); //set all pixels to a color value equal to the variable pixels.draw(); //send the setPixel data to the wings } // (c) 2024 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!

This graphic represents how some values from the light sensor will be 'mapped' onto the pixel colors.

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 4th and 5th arguments of the map function so that the turn knob only maps to LED pixel colors ranging from 100 to 200.

Tinker with these values so you have a knob that just tunes within a color range that you like.

Flip the 1st and 2nd arguments of the map function from 0 and 1023 to 1023 and 0. Before you upload, predict what you think will happen.

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