multiple neopixels crawling at different speeds, but at the same starting time

Using Arduino LEDs and Multiplexing
1

i have 7 strips of neopixel leds and need i to light them all up at the same time... except with different speeds for each strip.

this is my code as of now.

#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
  #include <avr/power.h>
#endif

#define PIN 2
#define PIN2 3
#define PIN3 5
#define PIN4 6
#define PIN5 9
#define PIN6 10
#define PIN7 11

Adafruit_NeoPixel strip1 = Adafruit_NeoPixel(21, PIN, NEO_GRB + NEO_KHZ800);
Adafruit_NeoPixel strip2 = Adafruit_NeoPixel(6, PIN2, NEO_GRB + NEO_KHZ800);
Adafruit_NeoPixel strip3 = Adafruit_NeoPixel(6, PIN3, NEO_GRB + NEO_KHZ800);
Adafruit_NeoPixel strip4 = Adafruit_NeoPixel(12, PIN4, NEO_GRB + NEO_KHZ800);
Adafruit_NeoPixel strip5 = Adafruit_NeoPixel(12, PIN5, NEO_GRB + NEO_KHZ800);
Adafruit_NeoPixel strip6 = Adafruit_NeoPixel(12, PIN6, NEO_GRB + NEO_KHZ800);
Adafruit_NeoPixel strip7 = Adafruit_NeoPixel(21, PIN7, NEO_GRB + NEO_KHZ800);

void setup() {
  strip1.begin();
  strip1.show();
  strip2.begin();
  strip2.show();
  strip3.begin();
  strip3.show();
  strip4.begin();
  strip4.show(); 
  strip5.begin();
  strip5.show();
  strip6.begin();
  strip6.show();
  strip7.begin();
  strip7.show();
}

void loop() {
  rainbowCycle(20);
}

void rainbowCycle(uint8_t wait) {
  uint16_t i, j;

  for(j=0; j<256*5; j++) { // 5 cycles of all colors on wheel
    for(i=0; i< strip1.numPixels(); i++) {
      strip1.setPixelColor(strip1.numPixels()-1-i, Wheel(((i * 256 / strip1.numPixels()) + j) & 255));
    }
    strip1.show();
    delay(wait);
  }
}

uint32_t Wheel(byte WheelPos) {
  WheelPos = 255 - WheelPos;
  if(WheelPos < 85) {
    return strip1.Color(WheelPos * 3, (WheelPos*3)/5, 0);
  }
  if(WheelPos < 170) {
    WheelPos -= 85;
    return strip1.Color(255-WheelPos*3, (255-WheelPos*3)/4, 0);
  }
  WheelPos -= 170;
  return strip1.Color(0, 0, 0);
}

void rainbowCycle(uint8_t wait) {
  uint16_t i, j;

  for(j=0; j<256*5; j++) { // 5 cycles of all colors on wheel
    for(i=0; i< strip2.numPixels(); i++) {
      strip2.setPixelColor(strip2.numPixels()-1-i, Wheel(((i * 256 / strip2.numPixels()) + j) & 255));
    }
    strip2.show();
    delay(wait);
  }
}

uint32_t Wheel(byte WheelPos) {
  WheelPos = 255 - WheelPos;
  if(WheelPos < 85) {
    return strip2.Color(WheelPos * 3, (WheelPos*3)/5, 0);
  }
  if(WheelPos < 170) {
    WheelPos -= 85;
    return strip2.Color(255-WheelPos*3, (255-WheelPos*3)/4, 0);
  }
  WheelPos -= 170;
  return strip2.Color(0, 0, 0);
}

void rainbowCycle(uint8_t wait) {
  uint16_t i, j;

  for(j=0; j<256*5; j++) { // 5 cycles of all colors on wheel
    for(i=0; i< strip3.numPixels(); i++) {
      strip1.setPixelColor(strip3.numPixels()-1-i, Wheel(((i * 256 / strip3.numPixels()) + j) & 255));
    }
    strip3.show();
    delay(wait);
  }
}

uint32_t Wheel(byte WheelPos) {
  WheelPos = 255 - WheelPos;
  if(WheelPos < 85) {
    return strip3.Color(WheelPos * 3, (WheelPos*3)/5, 0);
  }
  if(WheelPos < 170) {
    WheelPos -= 85;
    return strip3.Color(255-WheelPos*3, (255-WheelPos*3)/4, 0);
  }
  WheelPos -= 170;
  return strip3.Color(0, 0, 0);
}

void rainbowCycle(uint8_t wait) {
  uint16_t i, j;

  for(j=0; j<256*5; j++) { // 5 cycles of all colors on wheel
    for(i=0; i< strip4.numPixels(); i++) {
      strip4.setPixelColor(strip4.numPixels()-1-i, Wheel(((i * 256 / strip4.numPixels()) + j) & 255));
    }
    strip4.show();
    delay(wait);
  }
}

uint32_t Wheel(byte WheelPos) {
  WheelPos = 255 - WheelPos;
  if(WheelPos < 85) {
    return strip4.Color(WheelPos * 3, (WheelPos*3)/5, 0);
  }
  if(WheelPos < 170) {
    WheelPos -= 85;
    return strip4.Color(255-WheelPos*3, (255-WheelPos*3)/4, 0);
  }
  WheelPos -= 170;
  return strip4.Color(0, 0, 0);
}

void rainbowCycle(uint8_t wait) {
  uint16_t i, j;

  for(j=0; j<256*5; j++) { // 5 cycles of all colors on wheel
    for(i=0; i< strip5.numPixels(); i++) {
      strip5.setPixelColor(strip5.numPixels()-1-i, Wheel(((i * 256 / strip5.numPixels()) + j) & 255));
    }
    strip5.show();
    delay(wait);
  }
}

uint32_t Wheel(byte WheelPos) {
  WheelPos = 255 - WheelPos;
  if(WheelPos < 85) {
    return strip5.Color(WheelPos * 3, (WheelPos*3)/5, 0);
  }
  if(WheelPos < 170) {
    WheelPos -= 85;
    return strip5.Color(255-WheelPos*3, (255-WheelPos*3)/4, 0);
  }
  WheelPos -= 170;
  return strip5.Color(0, 0, 0);
}

void rainbowCycle(uint8_t wait) {
  uint16_t i, j;

  for(j=0; j<256*5; j++) { // 5 cycles of all colors on wheel
    for(i=0; i< strip6.numPixels(); i++) {
      strip6.setPixelColor(strip6.numPixels()-1-i, Wheel(((i * 256 / strip6.numPixels()) + j) & 255));
    }
    strip6.show();
    delay(wait);
  }
}

uint32_t Wheel(byte WheelPos) {
  WheelPos = 255 - WheelPos;
  if(WheelPos < 85) {
    return strip6.Color(WheelPos * 3, (WheelPos*3)/5, 0);
  }
  if(WheelPos < 170) {
    WheelPos -= 85;
    return strip6.Color(255-WheelPos*3, (255-WheelPos*3)/4, 0);
  }
  WheelPos -= 170;
  return strip6.Color(0, 0, 0);
}

void rainbowCycle(uint8_t wait) {
  uint16_t i, j;

  for(j=0; j<256*5; j++) { // 5 cycles of all colors on wheel
    for(i=0; i< strip7.numPixels(); i++) {
      strip7.setPixelColor(strip7.numPixels()-1-i, Wheel(((i * 256 / strip7.numPixels()) + j) & 255));
    }
    strip7.show();
    delay(wait);
  }
}

uint32_t Wheel(byte WheelPos) {
  WheelPos = 255 - WheelPos;
  if(WheelPos < 85) {
    return strip7.Color(WheelPos * 3, (WheelPos*3)/5, 0);
  }
  if(WheelPos < 170) {
    WheelPos -= 85;
    return strip7.Color(255-WheelPos*3, (255-WheelPos*3)/4, 0);
  }
  WheelPos -= 170;
  return strip7.Color(0, 0, 0);
}
}

i'm pretty sure what i need to change is the void loop part since it has the speed for the rainbow cycle. question is: how do i set the speed for each individual strip and get them all on at the same time?

EDIT:
i noticed some mistakes in my codes, here's the revised one.

void rainbowCycle(uint8_t wait) {
  uint16_t i, j;

  for(j=0; j<256*5; j++) { // 5 cycles of all colors on wheel
    for(i=0; i< strip1.numPixels(); i++) {
      strip1.setPixelColor(strip1.numPixels()-1-i, Wheel(((i * 256 / strip1.numPixels()) + j) & 255));
    }
    strip1.show();
    delay(wait);
  }
  for(j=0; j<256*5; j++) { // 5 cycles of all colors on wheel
    for(i=0; i< strip2.numPixels(); i++) {
      strip2.setPixelColor(strip2.numPixels()-1-i, Wheel(((i * 256 / strip2.numPixels()) + j) & 255));
    }
    strip2.show();
    delay(wait);
  }
  for(j=0; j<256*5; j++) { // 5 cycles of all colors on wheel
    for(i=0; i< strip3.numPixels(); i++) {
      strip3.setPixelColor(strip3.numPixels()-1-i, Wheel(((i * 256 / strip3.numPixels()) + j) & 255));
    }
    strip3.show();
    delay(wait);
  }
  for(j=0; j<256*5; j++) { // 5 cycles of all colors on wheel
    for(i=0; i< strip4.numPixels(); i++) {
      strip4.setPixelColor(strip4.numPixels()-1-i, Wheel(((i * 256 / strip4.numPixels()) + j) & 255));
    }
    strip4.show();
    delay(wait);
  }
  for(j=0; j<256*5; j++) { // 5 cycles of all colors on wheel
    for(i=0; i< strip5.numPixels(); i++) {
      strip5.setPixelColor(strip5.numPixels()-1-i, Wheel(((i * 256 / strip5.numPixels()) + j) & 255));
    }
    strip5.show();
    delay(wait);
  }
  for(j=0; j<256*5; j++) { // 5 cycles of all colors on wheel
    for(i=0; i< strip1.numPixels(); i++) {
      strip6.setPixelColor(strip6.numPixels()-1-i, Wheel(((i * 256 / strip6.numPixels()) + j) & 255));
    }
    strip6.show();
    delay(wait);
  }
  for(j=0; j<256*5; j++) { // 5 cycles of all colors on wheel
    for(i=0; i< strip7.numPixels(); i++) {
      strip7.setPixelColor(strip7.numPixels()-1-i, Wheel(((i * 256 / strip7.numPixels()) + j) & 255));
    }
    strip7.show();
    delay(wait);
  }
}

uint32_t Wheel(byte WheelPos) {
  WheelPos = 255 - WheelPos;
  if(WheelPos < 85) {
    return strip1.Color(WheelPos * 3, (WheelPos*3)/5, 0);
    return strip2.Color(WheelPos * 3, (WheelPos*3)/5, 0);
    return strip3.Color(WheelPos * 3, (WheelPos*3)/5, 0);
    return strip4.Color(WheelPos * 3, (WheelPos*3)/5, 0);
    return strip5.Color(WheelPos * 3, (WheelPos*3)/5, 0);
    return strip6.Color(WheelPos * 3, (WheelPos*3)/5, 0);
    return strip7.Color(WheelPos * 3, (WheelPos*3)/5, 0);
  }
  if(WheelPos < 170) {
    WheelPos -= 85;
    return strip1.Color(255-WheelPos*3, (255-WheelPos*3)/4, 0);
    return strip2.Color(255-WheelPos*3, (255-WheelPos*3)/4, 0);
    return strip3.Color(255-WheelPos*3, (255-WheelPos*3)/4, 0);
    return strip4.Color(255-WheelPos*3, (255-WheelPos*3)/4, 0);
    return strip5.Color(255-WheelPos*3, (255-WheelPos*3)/4, 0);
    return strip6.Color(255-WheelPos*3, (255-WheelPos*3)/4, 0);
    return strip7.Color(255-WheelPos*3, (255-WheelPos*3)/4, 0);
  }
  WheelPos -= 170;
    return strip1.Color(0, 0, 0);
    return strip2.Color(0, 0, 0);
    return strip3.Color(0, 0, 0);
    return strip4.Color(0, 0, 0);
    return strip5.Color(0, 0, 0);
    return strip6.Color(0, 0, 0);
    return strip7.Color(0, 0, 0);
}

after turning on, it seems that the strips aren't all on at the same time.

2

Solution #1: buy 6 more Arduinos.

Solution #2: have a look at the "blink without delay" sketch. It may not seem relevant at first, but it teaches you the techniques needed to avoid using the delay() function. Using the delay() function prevents your sketch from "doing more than one thing at once".

3

actually, forget about using different speeds. i just need to get them start at the same time.

PaulRB:
Solution #2: have a look at the "blink without delay" sketch. It may not seem relevant at first, but it teaches you the techniques needed to avoid using the delay() function. Using the delay() function prevents your sketch from "doing more than one thing at once".

i get the gist of it, but how do i implement it with the rainbow's color code?

4

i get the gist of it, but how do i implement it with the rainbow's color code?

See my code in this thread.

https://forum.arduino.cc/index.php?topic=412232.0