Neopixel TheaterChase with 2 strip (one in reverse)

Projects Programming
1

Hi all,

Im a bit stuck with my code. Here's what im trying to do, I would like to simulate blood flow. For this I use two LED strips (one which will be red for oxygenating blood and the other blue for saturating) and I would like to use the TheaterChase effcet to simulate the flow. The problem is that with one function I would like one strip in one direction and the second in the opposite direction.

If you can help me that would be great thanks!

My code at the moment :

void loop() {
  
theaterChaseA(VEINE.Color(255, 0, 0),ARTERE.Color(255, 0, 0), 50);  


}

void theaterChaseA(uint32_t color1, uint32_t color2, int wait) {
  for(int a=0; a<10; a++) {  
    for(int b=0; b<4; b++) {  
      ARTERE.clear();
      VEINE.clear();
    
      for(int c=b; c<VEINE.numPixels(); c += 4) {
        ARTERE.setPixelColor(c - (a+b), color2); // Set pixel 'c' to value 'color'
        VEINE.setPixelColor(c, color1);
      }
      ARTERE.show();
      VEINE.show();// Update strip with new contents
        
      delay(90);
    }
  }

And in case, the project in pic.

DRAW
DRAW1152×648 7.43 KB

2

That is not a complete sketch. Please post the entire sketch so people can compile it. It will also indentify which LED library you are using.

1 Like
4

My bad, sorry

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

#define PINA 10
#define PINV 11

// Parameter 1 = number of pixels in strip
// Parameter 2 = Arduino pin number (most are valid)
// Parameter 3 = pixel type flags, add together as needed:
//   NEO_KHZ800  800 KHz bitstream (most NeoPixel products w/WS2812 LEDs)
//   NEO_KHZ400  400 KHz (classic 'v1' (not v2) FLORA pixels, WS2811 drivers)
//   NEO_GRB     Pixels are wired for GRB bitstream (most NeoPixel products)
//   NEO_RGB     Pixels are wired for RGB bitstream (v1 FLORA pixels, not v2)
//   NEO_RGBW    Pixels are wired for RGBW bitstream (NeoPixel RGBW products)
Adafruit_NeoPixel ARTERE = Adafruit_NeoPixel(25, PINA, NEO_GRB + NEO_KHZ800);
Adafruit_NeoPixel VEINE = Adafruit_NeoPixel(25, PINV, NEO_GRB + NEO_KHZ800);

// IMPORTANT: To reduce NeoPixel burnout risk, add 1000 uF capacitor across
// pixel power leads, add 300 - 500 Ohm resistor on first pixel's data input
// and minimize distance between Arduino and first pixel.  Avoid connecting
// on a live circuit...if you must, connect GND first.

void setup() {
  // This is for Trinket 5V 16MHz, you can remove these three lines if you are not using a Trinket
  #if defined (__AVR_ATtiny85__)
    if (F_CPU == 16000000) clock_prescale_set(clock_div_1);
  #endif
  // End of trinket special code

  ARTERE.begin();
  ARTERE.setBrightness(255);
  ARTERE.show(); // Initialize all pixels to 'off'

  VEINE.begin();
  VEINE.setBrightness(255);
  VEINE.show(); // Initialize all pixels to 'off'


}




void loop() {
  // put your main code here, to run repeatedly:
theaterChaseA(VEINE.Color(0, 255, 0),ARTERE.Color(0, 0, 255), 50);  


}

void theaterChaseA(uint32_t color1, uint32_t color2, int wait) {
  for(int a=0; a<10; a++) {  // Repeat 10 times...
    for(int b=0; b<4; b++) { //  'b' counts from 0 to 3... 
      ARTERE.clear();
      VEINE.clear();//   Set all pixels in RAM to 0 (off)
      // 'c' counts up from 'b' to end of strip in steps of 4...
      for(int c=b; c<VEINE.numPixels(); c += 4) {
        ARTERE.setPixelColor(c - (a+b), color2); // Set pixel 'c' to value 'color'
        VEINE.setPixelColor(c, color1);
      }
      ARTERE.show();
      VEINE.show();// Update strip with new contents
        
      delay(90);
    }
  }
}saisissez ou collez du code ici
5

Doesn't that code already do what you are asking? It appears to go in opposite directions for me

6

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