LED fade function

Other Hardware LEDs and Multiplexing
1

Hello everyone,

I wrote this function " fade_down() " which should fade out all LED lights. The function works fine, but the problem is the function doesn't go for the next instruction which is gradually_red();. It repeats the loop() again and again. I don't know what I did wrong.

thanks.


#include <FastLED.h>
#include "FastLED_RGBW.h"


#define LED_PIN     4
#define LED_PIN2     7
#define LED_PIN3     8

#define NUM_LEDS    5
#define NUM_LEDS2    5
#define NUM_LEDS3    5

CRGBW leds[NUM_LEDS];
CRGB *ledsRGB = (CRGB *) &leds[0];

CRGBW leds2[NUM_LEDS2];
CRGB *ledsRGB2 = (CRGB *) &leds2[0];

CRGBW leds3[NUM_LEDS3];
CRGB *ledsRGB3 = (CRGB *) &leds3[0]; 

int fadeAmount = 255;
int brightness = 0;
int N=0;

void setup() {
  FastLED.addLeds<WS2812B, LED_PIN, RGB>(ledsRGB, getRGBWsize(NUM_LEDS));
  FastLED.addLeds<WS2812B, LED_PIN2, RGB>(ledsRGB2, getRGBWsize(NUM_LEDS2));
  FastLED.addLeds<WS2812B, LED_PIN3, RGB>(ledsRGB3, getRGBWsize(NUM_LEDS3));
}
void loop() {
gradually_white();
FastLED.delay(110);

gradually_white2();
FastLED.delay(110);

gradually_white3();
FastLED.delay(1500);
fade_down();

FastLED.delay(1500);
gradually_red();
fade_down();
FastLED.clear();
FastLED.delay(110);



}
/*
void  fade_down() {
 for(int i = 0; i < NUM_LEDS; i-- )
   {
   ledsRGB[i].setRGB(255,255,255);   
   ledsRGB[i].fadeLightBy(brightness);
 
  }
  FastLED.show();
   brightness = brightness + fadeAmount;
   if(brightness == 0 || brightness == 255)
  {
    fadeAmount = -fadeAmount ; 
  }    
  delay(9);  
}
 
*/


void  fade_down() {
 for(int i=255;i>=0;i--) {

FastLED.setBrightness(i);  
 leds[i] = CRGB(255,255,255);
FastLED.show();
brightness = brightness + fadeAmount;
   if(brightness == 0 || brightness == 255)
  {
    fadeAmount = -fadeAmount ; 
  }    
  delay(15);
  
}
 }
 






void  gradually_white(){

  leds[4] = CRGB(255, 255, 255);
  FastLED.show();
  delay(110);
  leds[3] = CRGB(255, 255, 255);
  FastLED.show();
  delay(110);
  leds[2] = CRGB(255, 255, 255);
  FastLED.show();
  delay(110);
  leds[1] = CRGB(255, 255, 255);
  FastLED.show();
  delay(110);
  leds[0] = CRGB(255, 255, 255);
  FastLED.show();
  delay(110);
  delay(600);
}
void  gradually_white2(){
  leds2[3] = CRGB(255, 255, 255);
  FastLED.show();
  delay(110);
  leds2[2] = CRGB(255, 255, 255);
  FastLED.show();
  delay(110);
  leds2[1] = CRGB(255, 255, 255);
  FastLED.show();
  delay(110);
  leds2[0] = CRGB(255, 255, 255);
  FastLED.show();
  delay(110);
}

 void  gradually_white3(){
  FastLED.delay(600);
  leds3[3] = CRGB(255, 255, 255);
  FastLED.show();
  delay(110);
  leds3[2] = CRGB(255, 255, 255);
  FastLED.show();
  delay(110);
  leds3[1] = CRGB(255, 255, 255);
  FastLED.show();
  delay(110);
  leds3[0] = CRGB(255, 255, 255);
  FastLED.show();
  delay(110);
}

void  gradually_red(){
  leds[3]=CRGB::Red;
  FastLED.show();
  delay(110);
  leds[2]=CRGB::Red;
  FastLED.show();
  delay(110);
  leds[1]=CRGB::Red;
  FastLED.show();
  delay(110);
  leds[0]=CRGB::Red;
  FastLED.show();
  delay(110);
  
  leds2[3]=CRGB::Red;
  FastLED.show();
  delay(110);
  leds2[2]=CRGB::Red;
  FastLED.show();
  delay(110);
  leds2[1]=CRGB::Red;
  FastLED.show();
  delay(110);
  leds2[0]=CRGB::Red;
  FastLED.show();
  delay(110);
  
  delay(600);
  leds3[3]=CRGB::Red;
  FastLED.show();
  delay(110);
  leds3[2]=CRGB::Red;
  FastLED.show();
  delay(110);
  leds3[1]=CRGB::Red;
  FastLED.show();
  delay(110);
  leds3[1]=CRGB::Red;
  FastLED.show();
  delay(110);
  leds3[0]=CRGB::Red;
  FastLED.show();
  delay(110);

}
2

That is not all your code

3

Your function fills the entire strip with white, so I think you just don’t see red

4

you want the full code ?

5

We always do. Because 90% of the time the problem is in the code that people don't post.
See:-
http://snippets-r-us.com/

6

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