sketch_used_for_sensorica_sign_08042023

gistfile1.txt

// video: https://www.youtube.com/watch?v=vH2QmrpCJuw
// code: https://www.tweaking4all.com/hardware/arduino/arduino-all-ledstrip-effects-in-one/

#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
 #include <avr/power.h> // Required for 16 MHz Adafruit Trinket
#endif

// Which pin on the Arduino is connected to the NeoPixels?
#define PIN        6 // On Trinket or Gemma, suggest changing this to 1 // white --> green wire
                     // VIN red wire
                     // GMD black wire

// How many NeoPixels are attached to the Arduino?
#define NUMPIXELS 135 // Popular NeoPixel ring size
#define SPEEDDELAY 0.02

// When setting up the NeoPixel library, we tell it how many pixels,
// and which pin to use to send signals. Note that for older NeoPixel
// strips you might need to change the third parameter -- see the
// strandtest example for more information on possible values.
Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);

#define DELAYVAL 0 // Time (in milliseconds) to pause between pixels

void setup() {
  // These lines are specifically to support the Adafruit Trinket 5V 16 MHz.
  // Any other board, you can remove this part (but no harm leaving it):
#if defined(__AVR_ATtiny85__) && (F_CPU == 16000000)
  clock_prescale_set(clock_div_1);
#endif
  // END of Trinket-specific code.

  pixels.begin(); // INITIALIZE NeoPixel strip object (REQUIRED)
  pixels.show(); // Initialize all pixels to 'off'
}

void loop() {
    meteorRain(0xff,0x00,0x00,10, 64, true, 30);
}

void meteorRain(byte red, byte green, byte blue, byte meteorSize, byte meteorTrailDecay, boolean meteorRandomDecay, int SpeedDelay) {  
  setAll(0,0,0);
 
  for(int i = 0; i < NUMPIXELS+NUMPIXELS; i++) {
   
   
    // fade brightness all LEDs one step
    for(int j=0; j<NUMPIXELS; j++) {
      if( (!meteorRandomDecay) || (random(10)>5) ) {
        fadeToBlack(j, meteorTrailDecay );        
      }
    }
   
    // draw meteor
    for(int j = 0; j < meteorSize; j++) {
      if( ( i-j <NUMPIXELS) && (i-j>=0) ) {
        setPixel(i-j, red, green, blue);
      }
    }
   
    showStrip();
    delay(SpeedDelay);
  }
}

// used by meteorrain
void fadeToBlack(int ledNo, byte fadeValue) {
 #ifdef ADAFRUIT_NEOPIXEL_H
    // NeoPixel
    uint32_t oldColor;
    uint8_t r, g, b;
    int value;
   
    oldColor =  pixels.getPixelColor(ledNo);
    r = (oldColor & 0x00ff0000UL) >> 16;
    g = (oldColor & 0x0000ff00UL) >> 8;
    b = (oldColor & 0x000000ffUL);

    r=(r<=10)? 0 : (int) r-(r*fadeValue/256);
    g=(g<=10)? 0 : (int) g-(g*fadeValue/256);
    b=(b<=10)? 0 : (int) b-(b*fadeValue/256);
   
    pixels.setPixelColor(ledNo, r,g,b);
 #endif
 #ifndef ADAFRUIT_NEOPIXEL_H
   // FastLED
   leds[ledNo].fadeToBlackBy( fadeValue );
 #endif  
}

// Set a LED color (not yet visible)
void setPixel(int Pixel, byte red, byte green, byte blue) {
 #ifdef ADAFRUIT_NEOPIXEL_H
   // NeoPixel
   pixels.setPixelColor(Pixel, pixels.Color(red, green, blue));
 #endif
 #ifndef ADAFRUIT_NEOPIXEL_H
   // FastLED
   leds[Pixel].r = red;
   leds[Pixel].g = green;
   leds[Pixel].b = blue;
 #endif
}

// Apply LED color changes
void showStrip() {
 #ifdef ADAFRUIT_NEOPIXEL_H
   // NeoPixel
   pixels.show();
 #endif
}

// Set all LEDs to a given color and apply it (visible)
void setAll(byte red, byte green, byte blue) {
  for(int i = 0; i < NUMPIXELS; i++ ) {
    setPixel(i, red, green, blue);
  }
  showStrip();
}

Here is the old sketch that did not work:

// NeoPixel Ring simple sketch (c) 2013 Shae Erisson
// Released under the GPLv3 license to match the rest of the
// Adafruit NeoPixel library

#include <Adafruit_NeoPixel.h>
#ifdef AVR
#include <avr/power.h> // Required for 16 MHz Adafruit Trinket
#endif

// Which pin on the Arduino is connected to the NeoPixels?
#define PIN 6 // On Trinket or Gemma, suggest changing this to 1

// How many NeoPixels are attached to the Arduino?
#define NUMPIXELS 135 // Popular NeoPixel ring size

// When setting up the NeoPixel library, we tell it how many pixels,
// and which pin to use to send signals. Note that for older NeoPixel
// strips you might need to change the third parameter -- see the
// strandtest example for more information on possible values.
Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);

#define DELAYVAL 0 // Time (in milliseconds) to pause between pixels

void setup() {
// These lines are specifically to support the Adafruit Trinket 5V 16 MHz.
// Any other board, you can remove this part (but no harm leaving it):
#if defined(AVR_ATtiny85) && (F_CPU == 16000000)
clock_prescale_set(clock_div_1);
#endif
// END of Trinket-specific code.

pixels.begin(); // INITIALIZE NeoPixel strip object (REQUIRED)
}

void loop() {

// The first NeoPixel in a strand is #0, second is 1, all the way up()
// to the count of pixels minus one.

int pulseLength = 6;
int k = 0; //k = 1 to NUMPIXELS -1

for(int k=0; k<NUMPIXELS; k++) {
pixels.clear(); // Set all pixel colors to 'off'
for(int i=0; i<NUMPIXELS; i++) { // For each pixel...

if((i>=(k)) && (i<(k+pulseLength)) ) {
  pixels.setPixelColor(i, pixels.Color(150, 0, 0));
}

pixels.show();   // Send the updated pixel colors to the hardware.

// delay(DELAYVAL); // Pause before next pass through loop
}
delay(DELAYVAL);
}
}