Kategorie: Design

The problem with the neopixel colors was found and corrected. We had to change the indications in the code from NEO_GRB to NEO_RGBW:

Even though the code was working properly in the Neopixel strip, when we uploaded the code to the Neopixels we solder, they were not working correclty, the should light in one color but instead of that, each Neopixel shines in a different color and the programmed light pattern is not working.  We are trying to find out the problem.

Neopixel shining in different colors

Soldered Neopixels

Neopixel srip

CODE:

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

#define PIN 6

// 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 strip = Adafruit_NeoPixel(60, PIN, NEO_RGBW + 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


 strip.begin();
 strip.show(); // Initialize all pixels to 'off'
}

void loop() {
 // Some example procedures showing how to display to the pixels:
 colorWipe(strip.Color(255, 0, 0), 50); // Red
 colorWipe(strip.Color(0, 255, 0), 50); // Green
 colorWipe(strip.Color(0, 0, 255), 50); // Blue
//colorWipe(strip.Color(0, 0, 0, 255), 50); // White RGBW
 // Send a theater pixel chase in...
// theaterChase(strip.Color(127, 127, 127), 50); // White
 // theaterChase(strip.Color(127, 0, 0), 50); // Red
 // theaterChase(strip.Color(0, 0, 127), 50); // Blue

 //rainbow(20);
 // rainbowCycle(20);
 // theaterChaseRainbow(50);
}

// Fill the dots one after the other with a color
void colorWipe(uint32_t c, uint8_t wait) {
 for(uint16_t i=0; i<strip.numPixels(); i++) {
 strip.setPixelColor(i, c);
 strip.show();
 delay(wait);
 }
}



//Theatre-style crawling lights.
void theaterChase(uint32_t c, uint8_t wait) {
 for (int j=0; j<10; j++) { //do 10 cycles of chasing
 for (int q=0; q < 3; q++) {
 for (uint16_t i=0; i < strip.numPixels(); i=i+3) {
 strip.setPixelColor(i+q, c); //turn every third pixel on
 }
 strip.show();

 // delay(wait);

 for (uint16_t i=0; i < strip.numPixels(); i=i+3) {
 strip.setPixelColor(i+q, 0); //turn every third pixel off
 }
 }

 }
}

// Input a value 0 to 255 to get a color value.
// The colours are a transition r - g - b - back to r.
uint32_t Wheel(byte WheelPos) {
 WheelPos = 255 - WheelPos;
 if(WheelPos < 85) {
 return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3);
 }
 if(WheelPos < 170) {
 WheelPos -= 85;
 return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3);
 }
 WheelPos -= 170;
 return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0);
}

Today Jeong and me were thinking about the costume design. We decided to use neopixels and locate them in the chest of the performer. At the beginning we did not know which neopixel  pattern could be the best. After a while we came up with an idea. We decided to make the shape of a heartbeat. We think this shape match perfectly with the theme of performance.