FastLED Glitter

[simoncollett]

I have cobbled together something that works perfectly for what it is.
I have 2 PIR sensors on my staircase. If I go up then I get a nice effect as the stairs are lit one at a time. They stay on for 35 seconds then turn off in the same manner.
Going down does the same but with the flow in reverse.

#include <FastLED.h>
#define NUM_LEDS 120
#define DATA_PIN 3
#define CLOCK_PIN 12
CRGB leds[NUM_LEDS];
int LED = 13; // the pin that the LED is atteched to
int PIR = 2; // the pin that the sensor is atteched to
int PIR_UP = 4; // the pin that the sensor is atteched to

void setup() {
pinMode(LED, OUTPUT); // initalize LED as an output
pinMode(PIR, INPUT); // initialize sensor as an input
pinMode(PIR_UP, INPUT); // initialize sensor as an input
Serial.begin(9600); // initialize serial
}

void loop(){
int i;
int t;
int x;
int numleds;

FastLED.addLeds<WS2811, DATA_PIN, BRG>(leds, NUM_LEDS);
if (digitalRead(PIR) == HIGH) { // check if the sensor is HIGH

numleds = NUM_LEDS;
for(int whiteLed = 0; whiteLed < numleds; whiteLed = whiteLed + 1) {
leds[whiteLed] = CRGB(200,200,200);
FastLED.show();
delay(30);
}
delay(35000); // seconds to stay on

for(int whiteLed = 0; whiteLed < numleds; whiteLed = whiteLed + 1) {
leds[whiteLed] = CRGB::Black;
FastLED.show();
delay(30);
}
}

else if (digitalRead(PIR_UP) == HIGH) { // check if the sensor is HIGH

numleds = NUM_LEDS;
for(int whiteLed = 120; whiteLed > 0; whiteLed = whiteLed - 1) {
leds[whiteLed] = CRGB(200,200,200);
FastLED.show();
delay(30);
}
delay(35000); // seconds to stay on

for(int whiteLed = 120; whiteLed > 0; whiteLed = whiteLed - 1) {
leds[whiteLed] = CRGB::Black;
FastLED.show();
delay(30);
}

}
}

I'm trying to add the addGlitter() function from the FastLED demo reel to have the glitter effect for the 35 seconds that the lights stay on for but I just cannot get any of my bumbling attempts to compile.

Can anyone help please?

[johnwasser]

@simoncollett

delay(35000); // seconds to stay on

Your sketch is going to do NOTHING for those 35 seconds. If you want something to happen, change this to a timing loop:

    unsigned long startTime = millis();
    while (millis() - startTime < 35000ul)
    {
      // Do the glitter effect here
    }

[lastchancename]

And when the glitter is working, increase your insurance…
Epileptics and migraine sufferers will thank you later.