Page 1 of 1

Welcome to the Tweaking4All community forums!
When participating, please keep the Forum Rules in mind!

Topics for particular software or systems: Start your topic link with the name of the application or system.
For example “MacOS X – Your question“, or “MS Word – Your Tip or Trick“.

Please note that switching to another language when reading a post will not bring you to the same post, in Dutch, as there is no translation for that post!

LED Effects: Runnin...
Clear all

LED Effects: Running lights with 3 colors (Red, White and Blue!)

1 Posts
1 Users
Famed Member Admin
Joined: 9 years ago
Posts: 2315
Topic starter  

While tinkering on something similar, I was able to change my code easily to support 3 colors, showing red, white and blue.
You can select you own colors of course and the speed.

This sketch relies on FastLed.
Set the proper NUM_LEDS and the proper PIN used on your Arduino.

#include "FastLED.h"
#define NUM_LEDS 60
#define PIN 6

void setup()
FastLED.addLeds<WS2811, PIN, GRB>(leds, NUM_LEDS).setCorrection( TypicalLEDStrip );

void loop() {
RunningLights(0x00, 0x00, 0xff, // blue
0xff, 0xff, 0xff, // white
0xff, 0x00, 0x00, // red

void RunningLights(byte red1, byte green1, byte blue1,
byte red2, byte green2, byte blue2,
byte red3, byte green3, byte blue3, int WaveDelay) {

float b1 = 0.05; // brightness LEDs 1 and 5
float b2 = 0.2; // brightness LEDs 2 and 4

int Col1Pos = 0;

for(int start=0; start<15; start++) /// "strip" is 10 leds: 2x5 leds
for (int i=-15; i < NUM_LEDS+15; i=i+15) {
Col1Pos = i+start;

setMyPixel(Col1Pos, b1*red1, b1*green1, b1*blue1); //turn every third pixel on
setMyPixel(Col1Pos+1, b2*red1, b2*green1, b2*blue1);
setMyPixel(Col1Pos+2, red1, green1, blue1);
setMyPixel(Col1Pos+3, b2*red1, b2*green1, b2*blue1);
setMyPixel(Col1Pos+4, b1*red1, b1*green1, b1*blue1);

setMyPixel(Col1Pos+5, b1*red2, b1*green2, b1*blue2); //turn every third pixel on
setMyPixel(Col1Pos+6, b2*red2, b2*green2, b2*blue2);
setMyPixel(Col1Pos+7, red2, green2, blue2);
setMyPixel(Col1Pos+8, b2*red2, b2*green2, b2*blue2);
setMyPixel(Col1Pos+9, b1*red2, b1*green2, b1*blue2);

setMyPixel(Col1Pos+10, b1*red3, b1*green3, b1*blue3); //turn every third pixel on
setMyPixel(Col1Pos+11, b2*red3, b2*green3, b2*blue3);
setMyPixel(Col1Pos+12, red3, green3, blue3);
setMyPixel(Col1Pos+13, b2*red3, b2*green3, b2*blue3);
setMyPixel(Col1Pos+14, b1*red3, b1*green3, b1*blue3);


void setMyPixel(int Pixel, byte red, byte green, byte blue) {
if( (Pixel>=0) && (Pixel<=NUM_LEDS) )
leds[Pixel] = CRGB( red, green, blue);



Like what you see and you'd like to help out? 

The best way to help is of course by assisting others with their questions here in the forum, but you can also help us out in other ways:

- Do your shopping at Amazon, it will not cost you anything extra but may generate a small commission for us,
- send a cup of coffee through PayPal ($5, $10, $20, or custom amount),
- become a Patreon,
- donate BitCoin (BTC), or BitCoinCash (BCH).