[아두이노] 적외선 센서를 이용하여 가까이 다가가면 무지개 만들기

[code]

#include <Adafruit_NeoPixel.h>

#ifdef __AVR__

#include <avr/power.h>

#endif

#define PIN 6

int sensorPin = A0;

int sensorValue = 0;

//Parameter 16 = 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(16, PIN, 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() {

  Serial.begin(9600);

  // 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

  colorWipe (strip.Color(0, 0, 255), 50);

  strip.begin();

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

}

void loop() {

  /* theaterChase(strip.Color(127, 127, 127), 50); // White

  theaterChase(strip.Color(127, 0, 0), 50); // Red

   // Blue */

  sensorValue = analogRead(sensorPin);

  Serial.print("Sensor Value = ");

  Serial.println(sensorValue);

  if (sensorValue > 100)

  {

    rainbow(10);

  }

  theaterChase(strip.Color(0, 0, 127),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();

    if (sensorValue > 100)

    {

      rainbow(0);

    }

    delay(wait);

  }

}

void rainbow(uint8_t wait) {

  uint16_t i, j;

  for (j = 0; j < 256; j++) {

    for (i = 0; i < strip.numPixels(); i++) {

      strip.setPixelColor(i, Wheel((i + j) & 255));

    }

    strip.show();

    delay(wait);

  }

}

// Slightly different, this makes the rainbow equally distributed throughout

void rainbowCycle(uint8_t wait) {

  uint16_t i, j;

  for (j = 0; j < 256; j++) { // 5 cycles of all colors on wheel

    for (i = 0; i < strip.numPixels(); i++) {

      strip.setPixelColor(i, Wheel(((i * 256 / strip.numPixels()) + j) & 255));

    }

    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

      }

    }

  }

}

//Theatre-style crawling lights with rainbow effect

void theaterChaseRainbow(uint8_t wait) {

  for (int j = 0; j < 256; j++) {   // cycle all 256 colors in the wheel

    for (int q = 0; q < 3; q++) {

      for (uint16_t i = 0; i < strip.numPixels(); i = i + 3) {

        strip.setPixelColor(i + q, Wheel( (i + j) % 255)); //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);

}

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