The code presented on this page can be downloaded or found in the Arduino examples menu under Examples → SpinWearables → Animations_and_Patterns → Rainbow_Chase.

A Few LEDs with continuously changing colors “chasing” each other

This is the last of the animations and patterns examples. By introducing a “delay” or “offset” between the numbers governing the colors of a given LED, we can make them look as if they are chasing each other. Some pieces of code are the same as in previous examples from this series on coded animations, We do not comment them as extensively here, but consult the Simple_Blink example if you need a refresher.

#include "SpinWearables.h"
using namespace SpinWearables;

void setup() {

void loop() {
  int t = millis();

We will have some fixed “delay” between the numbers controlling each LED’s color. Change this number! What happens?

  int t_delay = 200;

We will turn 4 of the LEDs on, but the color of each one of them will be governed by a slightly modified number.

  int t0 = (t % 2500) / 10;
  int t1 = ((t+t_delay) % 2500) / 10;
  int t2 = ((t+2*t_delay) % 2500) / 10;
  int t3 = ((t+3*t_delay) % 2500) / 10;

Here we finally set those colors.

  SpinWheel.setLargeLED(0, colorWheel(t0));
  SpinWheel.setLargeLED(1, colorWheel(t1));
  SpinWheel.setLargeLED(2, colorWheel(t2));
  SpinWheel.setLargeLED(3, colorWheel(t3));

Draw the image that was prepared in the previous lines.