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  【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）

  实验二百一十四：WS2812B全彩RGB像素屏 8x32点阵LED显示屏 硬屏模块

  项目程序十七：使用Adafruit_NeoPixel库的串口控制20种效果

 

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/*
  【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
  实验二百一十四：WS2812B全彩RGB像素屏 8x32点阵LED显示屏 硬屏模块
  项目程序十七：使用Adafruit_NeoPixel库的串口控制20种效果
*/

#include <Adafruit_NeoPixel.h>
#define PIN 6 //LED'in Din pinini yazın
#define NUM_LEDS 256 //Kaç tane LED'iniz varsa buraya yazın
#define BRIGHTNESS 20

Adafruit_NeoPixel strip = Adafruit_NeoPixel(NUM_LEDS, PIN, NEO_GRB + NEO_KHZ800);
int mod;
int lastmod;
String veri;
int randommod;
int parlaklik = 0;

void setup() {
  Serial.begin(9600);
  veri.reserve(5);
  strip.begin();
  strip.show();
  strip.setBrightness(BRIGHTNESS); //亮度范围0-255
  Serial.println("WS2812准备就绪");
  Serial.println("串口输入1-21");
}

void loop() {
  switch (mod) {
    case 1:
      Serial.println("RGBLoop");
      RGBLoop();
      break;
    case 2:
      Serial.println("Strobe");
      Strobe(0xff, 0xff, 0xff, 10, 50, 1000);
      break;
    case 3:
      Serial.println("HalloweenEyes");
      HalloweenEyes(0xff, 0x00, 0x00, 1, 4, true, random(5, 50), random(10, 50), random(50, 300));
      break;
    case 4:
      Serial.println("NewKITT RightToLeft");
      NewKITT(0xff, 0, 0, 8, 10, 50);
      break;
    case 5:
      Serial.println("Twinkle");
      Twinkle(0xff, 0, 0, 10, 100, false);
      break;
    case 6:
      Serial.println("TwinkleRandom");
      Twinkle(0xff, 0, 0, 10, 100, false);
      break;
    case 7:
      Serial.println("Sparkle");
      Sparkle(0xff, 0xff, 0xff, 0);
      break;
    case 8:
      Serial.println("SnowSparkle");
      SnowSparkle(0x10, 0x10, 0x10, 20, random(100, 1000));
      break;
    case 9:
      Serial.println("RunningLights");
      RunningLights(0xff, 0xff, 0x00, 50);
      break;
    case 10:
      Serial.println("colorWipe");
      colorWipe(0x00, 0xff, 0x00, 50);
      colorWipe(0xff, 0x00, 0x00, 50);
      break;
    case 11:
      Serial.println("rainbowCycle");
      rainbowCycle(20);
      break;
    case 12:
      Serial.println("theaterChase");
      theaterChase(0xff, 0, 0, 50);
      break;
    case 13:
      Serial.println("theaterChaseRainbow");
      theaterChaseRainbow(50);
      break;
    case 14:
      Serial.println("Fire");
      Fire(55, 120, 15);
      break;
    case 15:
      Serial.println("BouncingBalls");
      meteorRain(0xff, 0xff, 0xff, 10, 64, true, 30);
      break;
    case 16:
      Serial.println("meteorRain");
      meteorRain(0xff, 0xff, 0xff, 10, 64, true, 30);
      break;
    case 17:
      Serial.println("Red");
      setAll(255, 0, 0);
      break;
    case 18:
      Serial.println("Green");
      setAll(0, 255, 0);
      break;
    case 19:
      Serial.println("Blue");
      setAll(0, 0, 255);
      break;
    case 20:
      Serial.println("ON");
      randommod = random(1, 19);
      switch (randommod) {
        case 1:
          Serial.println("RGBLoop");
          RGBLoop();
          break;
        case 2:
          Serial.println("Strobe");
          Strobe(0xff, 0xff, 0xff, 10, 50, 1000);
          break;
        case 3:
          Serial.println("HalloweenEyes");
          HalloweenEyes(0xff, 0x00, 0x00, 1, 4, true, random(5, 50), random(10, 50), random(50, 300));
          break;
        case 4:
          Serial.println("NewKITT RightToLeft");
          NewKITT(0xff, 0, 0, 8, 10, 50);
          break;
        case 5:
          Serial.println("Twinkle");
          Twinkle(0xff, 0, 0, 10, 100, false);
          break;
        case 6:
          Serial.println("TwinkleRandom");
          Twinkle(0xff, 0, 0, 10, 100, false);
          break;
        case 7:
          Serial.println("Sparkle");
          Sparkle(0xff, 0xff, 0xff, 0);
          break;
        case 8:
          Serial.println("SnowSparkle");
          SnowSparkle(0x10, 0x10, 0x10, 20, random(100, 1000));
          break;
        case 9:
          Serial.println("RunningLights");
          RunningLights(0xff, 0xff, 0x00, 50);
          break;
        case 10:
          Serial.println("colorWipe");
          colorWipe(0x00, 0xff, 0x00, 50);
          colorWipe(0xff, 0x00, 0x00, 50);
          break;
        case 11:
          Serial.println("rainbowCycle");
          rainbowCycle(20);
          break;
        case 12:
          Serial.println("theaterChase");
          theaterChase(0xff, 0, 0, 50);
          break;
        case 13:
          Serial.println("theaterChaseRainbow");
          theaterChaseRainbow(50);
          break;
        case 14:
          Serial.println("Fire");
          Fire(55, 120, 15);
          break;
        case 15:
          Serial.println("BouncingBalls");
          meteorRain(0xff, 0xff, 0xff, 10, 64, true, 30);
          break;
        case 16:
          Serial.println("meteorRain");
          meteorRain(0xff, 0xff, 0xff, 10, 64, true, 30);
          break;
        case 17:
          Serial.println("Red");
          setAll(255, 0, 0);
          break;
        case 18:
          Serial.println("Green");
          setAll(0, 255, 0);
          break;
        case 19:
          Serial.println("Blue");
          setAll(0, 0, 255);
          break;
      }
      break;
    case 21:
      Serial.println("OFF");
      setAll(0, 0, 0);
      break;
    default:
      //Serial.println("Red");
      setAll(255, 0, 0);
      break;
  }
}
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 < NUM_LEDS + NUM_LEDS; i++) {


    // fade brightness all LEDs one step
    for (int j = 0; j < NUM_LEDS; j++) {
      if ( (!meteorRandomDecay) || (random(10) > 5) ) {
        fadeToBlack(j, meteorTrailDecay );
      }
      if (serialEvent() != false) break;
    }

    // draw meteor
    for (int j = 0; j < meteorSize; j++) {
      if ( ( i - j < NUM_LEDS) && (i - j >= 0) ) {
        setPixel(i - j, red, green, blue);
      }
      if (serialEvent() != false) break;
    }

    showStrip();
    delay(SpeedDelay);
    if (serialEvent() != false) break;
  }
}

void fadeToBlack(int ledNo, byte fadeValue) {
#ifdef ADAFRUIT_NEOPIXEL_H
  // NeoPixel
  uint32_t oldColor;
  uint8_t r, g, b;
  int value;

  oldColor = strip.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);

  strip.setPixelColor(ledNo, r, g, b);
#endif
#ifndef ADAFRUIT_NEOPIXEL_H
  // FastLED
  leds[ledNo].fadeToBlackBy( fadeValue );
#endif
}
void BouncingBalls(byte red, byte green, byte blue, int BallCount) {
  float Gravity = -9.81;
  int StartHeight = 1;

  float Height[BallCount];
  float ImpactVelocityStart = sqrt( -2 * Gravity * StartHeight );
  float ImpactVelocity[BallCount];
  float TimeSinceLastBounce[BallCount];
  int   Position[BallCount];
  long  ClockTimeSinceLastBounce[BallCount];
  float Dampening[BallCount];

  for (int i = 0 ; i < BallCount ; i++) {
    ClockTimeSinceLastBounce[i] = millis();
    Height[i] = StartHeight;
    Position[i] = 0;
    ImpactVelocity[i] = ImpactVelocityStart;
    TimeSinceLastBounce[i] = 0;
    Dampening[i] = 0.90 - float(i) / pow(BallCount, 2);
    if (serialEvent() != false) break;
  }

  while (true) {
    for (int i = 0 ; i < BallCount ; i++) {
      TimeSinceLastBounce[i] =  millis() - ClockTimeSinceLastBounce[i];
      Height[i] = 0.5 * Gravity * pow( TimeSinceLastBounce[i] / 1000 , 2.0 ) + ImpactVelocity[i] * TimeSinceLastBounce[i] / 1000;

      if ( Height[i] < 0 ) {
        Height[i] = 0;
        ImpactVelocity[i] = Dampening[i] * ImpactVelocity[i];
        ClockTimeSinceLastBounce[i] = millis();

        if ( ImpactVelocity[i] < 0.01 ) {
          ImpactVelocity[i] = ImpactVelocityStart;
        }
      }
      Position[i] = round( Height[i] * (NUM_LEDS - 1) / StartHeight);
      if (serialEvent() != false) break;
    }

    for (int i = 0 ; i < BallCount ; i++) {
      setPixel(Position[i], red, green, blue);
      if (serialEvent() != false) break;
    }

    showStrip();
    setAll(0, 0, 0);
    if (serialEvent() != false) break;
  }
}
void Fire(int Cooling, int Sparking, int SpeedDelay) {
  static byte heat[NUM_LEDS];
  int cooldown;
  for ( int i = 0; i < NUM_LEDS; i++) {
    cooldown = random(0, ((Cooling * 10) / NUM_LEDS) + 2);

    if (cooldown > heat[i]) {
      heat[i] = 0;
    } else {
      heat[i] = heat[i] - cooldown;
    }
    if (serialEvent() != false) break;
  }
  for ( int k = NUM_LEDS - 1; k >= 2; k--) {
    heat[k] = (heat[k - 1] + heat[k - 2] + heat[k - 2]) / 3;
    if (serialEvent() != false) break;
  }
  if ( random(255) < Sparking ) {
    int y = random(7);
    heat[y] = heat[y] + random(160, 255);
  }

  for ( int j = 0; j < NUM_LEDS; j++) {
    setPixelHeatColor(j, heat[j] );
    if (serialEvent() != false) break;
  }

  showStrip();
  delay(SpeedDelay);
}

void setPixelHeatColor (int Pixel, byte temperature) {
  byte t192 = round((temperature / 255.0) * 191);

  byte heatramp = t192 & 0x3F; // 0..63
  heatramp <<= 2; // scale up to 0..252
  if ( t192 > 0x80) {                    // hottest
    setPixel(Pixel, 255, 255, heatramp);
  } else if ( t192 > 0x40 ) {            // middle
    setPixel(Pixel, 255, heatramp, 0);
  } else {                               // coolest
    setPixel(Pixel, heatramp, 0, 0);
  }
}
void theaterChaseRainbow(int SpeedDelay) {
  byte *c;

  for (int j = 0; j < 256; j++) {
    for (int q = 0; q < 3; q++) {
      for (int i = 0; i < NUM_LEDS; i = i + 3) {
        c = Wheel( (i + j) % 255);
        setPixel(i + q, *c, *(c + 1), *(c + 2));
        if (serialEvent() != false) break;
      }
      showStrip();

      delay(SpeedDelay);

      for (int i = 0; i < NUM_LEDS; i = i + 3) {
        setPixel(i + q, 0, 0, 0);
        if (serialEvent() != false) break;
      }
      if (serialEvent() != false) break;
    }
    if (serialEvent() != false) break;
  }
}
void theaterChase(byte red, byte green, byte blue, int SpeedDelay) {
  for (int j = 0; j < 10; j++) {
    for (int q = 0; q < 3; q++) {
      for (int i = 0; i < NUM_LEDS; i = i + 3) {
        setPixel(i + q, red, green, blue);
        if (serialEvent() != false) break;
      }
      showStrip();

      delay(SpeedDelay);

      for (int i = 0; i < NUM_LEDS; i = i + 3) {
        setPixel(i + q, 0, 0, 0);
        if (serialEvent() != false) break;
      }
      if (serialEvent() != false) break;
    }
    if (serialEvent() != false) break;
  }
}
void rainbowCycle(int SpeedDelay) {
  byte *c;
  uint16_t i, j;

  for (j = 0; j < 256 * 5; j++) {
    for (i = 0; i < NUM_LEDS; i++) {
      c = Wheel(((i * 256 / NUM_LEDS) + j) & 255);
      setPixel(i, *c, *(c + 1), *(c + 2));
      if (serialEvent() != false) break;
    }
    showStrip();
    delay(SpeedDelay);
    if (serialEvent() != false) break;
  }
}

byte * Wheel(byte WheelPos) {
  static byte c[3];

  if (WheelPos < 85) {
    c[0] = WheelPos * 3;
    c[1] = 255 - WheelPos * 3;
    c[2] = 0;
  } else if (WheelPos < 170) {
    WheelPos -= 85;
    c[0] = 255 - WheelPos * 3;
    c[1] = 0;
    c[2] = WheelPos * 3;
  } else {
    WheelPos -= 170;
    c[0] = 0;
    c[1] = WheelPos * 3;
    c[2] = 255 - WheelPos * 3;
  }

  return c;
}
void colorWipe(byte red, byte green, byte blue, int SpeedDelay) {
  for (uint16_t i = 0; i < NUM_LEDS; i++) {
    setPixel(i, red, green, blue);
    showStrip();
    delay(SpeedDelay);
    if (serialEvent() != false) break;
  }
}
void RunningLights(byte red, byte green, byte blue, int WaveDelay) {
  int Position = 0;

  for (int j = 0; j < NUM_LEDS * 2; j++)
  {
    Position++; // = 0; //Position + Rate;
    for (int i = 0; i < NUM_LEDS; i++) {
      // sine wave, 3 offset waves make a rainbow!
      //float level = sin(i+Position) * 127 + 128;
      //setPixel(i,level,0,0);
      //float level = sin(i+Position) * 127 + 128;
      setPixel(i, ((sin(i + Position) * 127 + 128) / 255)*red,
               ((sin(i + Position) * 127 + 128) / 255)*green,
               ((sin(i + Position) * 127 + 128) / 255)*blue);
      if (serialEvent() != false) break;
    }

    showStrip();
    delay(WaveDelay);
    if (serialEvent() != false) break;
  }
}
void SnowSparkle(byte red, byte green, byte blue, int SparkleDelay, int SpeedDelay) {
  setAll(red, green, blue);
  int Pixel = random(NUM_LEDS);
  setPixel(Pixel, 0xff, 0xff, 0xff);
  showStrip();
  delay(SparkleDelay);
  setPixel(Pixel, red, green, blue);
  showStrip();
  delay(SpeedDelay);
}
void Sparkle(byte red, byte green, byte blue, int SpeedDelay) {
  int Pixel = random(NUM_LEDS);
  setPixel(Pixel, red, green, blue);
  showStrip();
  delay(SpeedDelay);
  setPixel(Pixel, 0, 0, 0);
}
void TwinkleRandom(int Count, int SpeedDelay, boolean OnlyOne) {
  setAll(0, 0, 0);

  for (int i = 0; i < Count; i++) {
    setPixel(random(NUM_LEDS), random(0, 255), random(0, 255), random(0, 255));
    showStrip();
    delay(SpeedDelay);
    if (OnlyOne) {
      setAll(0, 0, 0);
    }
    if (serialEvent() != false) break;
  }

  delay(SpeedDelay);
}
void Twinkle(byte red, byte green, byte blue, int Count, int SpeedDelay, boolean OnlyOne) {
  setAll(0, 0, 0);

  for (int i = 0; i < Count; i++) {
    setPixel(random(NUM_LEDS), red, green, blue);
    showStrip();
    delay(SpeedDelay);
    if (OnlyOne) {
      setAll(0, 0, 0);
    }
    if (serialEvent() != false) break;
  }

  delay(SpeedDelay);
}
void NewKITT(byte red, byte green, byte blue, int EyeSize, int SpeedDelay, int ReturnDelay) {
  RightToLeft(red, green, blue, EyeSize, SpeedDelay, ReturnDelay);
  LeftToRight(red, green, blue, EyeSize, SpeedDelay, ReturnDelay);
  /*OutsideToCenter(red, green, blue, EyeSize, SpeedDelay, ReturnDelay);
    CenterToOutside(red, green, blue, EyeSize, SpeedDelay, ReturnDelay);
    LeftToRight(red, green, blue, EyeSize, SpeedDelay, ReturnDelay);
    RightToLeft(red, green, blue, EyeSize, SpeedDelay, ReturnDelay);
    OutsideToCenter(red, green, blue, EyeSize, SpeedDelay, ReturnDelay);
    CenterToOutside(red, green, blue, EyeSize, SpeedDelay, ReturnDelay);*/
}

void CenterToOutside(byte red, byte green, byte blue, int EyeSize, int SpeedDelay, int ReturnDelay) {
  for (int i = ((NUM_LEDS - EyeSize) / 2); i >= 0; i--) {
    setAll(0, 0, 0);

    setPixel(i, red / 10, green / 10, blue / 10);
    for (int j = 1; j <= EyeSize; j++) {
      setPixel(i + j, red, green, blue);
      if (serialEvent() != false) break;
    }
    setPixel(i + EyeSize + 1, red / 10, green / 10, blue / 10);

    setPixel(NUM_LEDS - i, red / 10, green / 10, blue / 10);
    for (int j = 1; j <= EyeSize; j++) {
      setPixel(NUM_LEDS - i - j, red, green, blue);
      if (serialEvent() != false) break;
    }
    setPixel(NUM_LEDS - i - EyeSize - 1, red / 10, green / 10, blue / 10);

    showStrip();
    delay(SpeedDelay);
    if (serialEvent() != false) break;
  }
  delay(ReturnDelay);
}

void OutsideToCenter(byte red, byte green, byte blue, int EyeSize, int SpeedDelay, int ReturnDelay) {
  for (int i = 0; i <= ((NUM_LEDS - EyeSize) / 2); i++) {
    setAll(0, 0, 0);

    setPixel(i, red / 10, green / 10, blue / 10);
    for (int j = 1; j <= EyeSize; j++) {
      setPixel(i + j, red, green, blue);
      if (serialEvent() != false) break;
    }
    setPixel(i + EyeSize + 1, red / 10, green / 10, blue / 10);

    setPixel(NUM_LEDS - i, red / 10, green / 10, blue / 10);
    for (int j = 1; j <= EyeSize; j++) {
      setPixel(NUM_LEDS - i - j, red, green, blue);
      if (serialEvent() != false) break;
    }
    setPixel(NUM_LEDS - i - EyeSize - 1, red / 10, green / 10, blue / 10);

    showStrip();
    delay(SpeedDelay);
    if (serialEvent() != false) break;
  }
  delay(ReturnDelay);
}

void LeftToRight(byte red, byte green, byte blue, int EyeSize, int SpeedDelay, int ReturnDelay) {
  for (int i = 0; i < NUM_LEDS - EyeSize - 2; i++) {
    setAll(0, 0, 0);
    setPixel(i, red / 10, green / 10, blue / 10);
    for (int j = 1; j <= EyeSize; j++) {
      setPixel(i + j, red, green, blue);
      if (serialEvent() != false) break;;
    }
    setPixel(i + EyeSize + 1, red / 10, green / 10, blue / 10);
    showStrip();
    delay(SpeedDelay);
    if (serialEvent() != false) break;
  }
  delay(ReturnDelay);
}

void RightToLeft(byte red, byte green, byte blue, int EyeSize, int SpeedDelay, int ReturnDelay) {
  for (int i = NUM_LEDS - EyeSize - 2; i > 0; i--) {
    setAll(0, 0, 0);
    setPixel(i, red / 10, green / 10, blue / 10);
    for (int j = 1; j <= EyeSize; j++) {
      setPixel(i + j, red, green, blue);
      if (serialEvent() != false) break;
    }
    setPixel(i + EyeSize + 1, red / 10, green / 10, blue / 10);
    showStrip();
    delay(SpeedDelay);
    if (serialEvent() != false) break;
  }
  delay(ReturnDelay);
}
void HalloweenEyes(byte red, byte green, byte blue, int EyeWidth, int EyeSpace, boolean Fade, int Steps, int FadeDelay, int EndPause) {
  randomSeed(analogRead(0));

  int i;
  int StartPoint  = random( 0, NUM_LEDS - (2 * EyeWidth) - EyeSpace );
  int Start2ndEye = StartPoint + EyeWidth + EyeSpace;

  for (i = 0; i < EyeWidth; i++) {
    setPixel(StartPoint + i, red, green, blue);
    setPixel(Start2ndEye + i, red, green, blue);
    if (serialEvent() != false) break;
  }

  showStrip();

  if (Fade == true) {
    float r, g, b;

    for (int j = Steps; j >= 0; j--) {
      r = j * (red / Steps);
      g = j * (green / Steps);
      b = j * (blue / Steps);

      for (i = 0; i < EyeWidth; i++) {
        setPixel(StartPoint + i, r, g, b);
        setPixel(Start2ndEye + i, r, g, b);
        if (serialEvent() != false) break;
      }

      showStrip();
      delay(FadeDelay);
      if (serialEvent() != false) break;
    }
  }

  setAll(0, 0, 0); // Set all black

  delay(EndPause);
}
void Strobe(byte red, byte green, byte blue, int StrobeCount, int FlashDelay, int EndPause) {
  for (int j = 0; j < StrobeCount; j++) {
    setAll(red, green, blue);
    showStrip();
    delay(FlashDelay);
    setAll(0, 0, 0);
    showStrip();
    delay(FlashDelay);
    if (serialEvent() != false) break;
  }

  delay(EndPause);
}
void RGBLoop() {
  for (int j = 0; j < 3; j++ ) {
    // Fade IN
    for (int k = 0; k < 256; k++) {
      switch (j) {
        case 0: setAll(k, 0, 0); if (serialEvent() != false) break; break;
        case 1: setAll(0, k, 0); if (serialEvent() != false) break; break;
        case 2: setAll(0, 0, k); if (serialEvent() != false) break; break;
      }
      showStrip();
      if (serialEvent() != false)break;
    }
    // Fade OUT
    for (int k = 255; k >= 0; k--) {
      switch (j) {
        case 0: setAll(k, 0, 0); if (serialEvent() != false) break; break;
        case 1: setAll(0, k, 0); if (serialEvent() != false) break; break;
        case 2: setAll(0, 0, k); if (serialEvent() != false) break; break;
      }
      showStrip();
      if (serialEvent() != false)break;
    }
    if (serialEvent() != false)break;
  }
}
void showStrip() {
#ifdef ADAFRUIT_NEOPIXEL_H
  // NeoPixel
  strip.show();
#endif
#ifndef ADAFRUIT_NEOPIXEL_H
  // FastLED
  FastLED.show();
#endif
}

void setPixel(int Pixel, byte red, byte green, byte blue) {
#ifdef ADAFRUIT_NEOPIXEL_H
  // NeoPixel
  strip.setPixelColor(Pixel, strip.Color(red, green, blue));
#endif
#ifndef ADAFRUIT_NEOPIXEL_H
  // FastLED
  leds[Pixel].r = red;
  leds[Pixel].g = green;
  leds[Pixel].b = blue;
#endif
}

void setAll(byte red, byte green, byte blue) {
  for (int i = 0; i < NUM_LEDS; i++ ) {
    setPixel(i, red, green, blue);
  }
  showStrip();
}
bool serialEvent() {
  if (Serial.available()) {
    veri = Serial.readString();
    if (veri.charAt(0) == 'b') {
      veri = veri.substring(1, 4);
      parlaklik = veri.toInt();
      parlaklik = map(parlaklik, 0, 100, 0, 255);
      strip.setBrightness(parlaklik);
    }
    else {
      mod = veri.toInt();
      return true;
    }
  }
  return false;
}

 

eagler8

实验串口返回情况

 

eagler8

串口输入20，随机显示不同效果

 

eagler8

使用PC端控制软件，有二种控制WS2812B的方式
1、连接串口后，在底部窗口输入1-21，转换显示效果

2、点击16个效果按钮

 

eagler8

实验场景图

 

 

eagler8

eagler8

  【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）

  实验二百一十四：WS2812B全彩RGB像素屏 8x32点阵LED显示屏 硬屏模块

  项目程序十八：应用Adafruit_NeoPixel库的入门极简程序

 

濠电姷鏁告慨鐑藉极閸涘﹥鍙忛柣鎴ｆ閺嬩線鏌涘☉姗堟敾闁告瑥绻橀弻锝夊箣閿濆棭妫勯梺鍝勵儎缁舵岸寮诲☉妯锋婵鐗婇弫楣冩⒑閸涘﹦鎳冪紒缁樺姍濠€渚€姊虹粙璺ㄧ闁告艾顑囩槐鐐哄箣閿旂晫鍘遍梺闈浨归崕閬嶅焵椤掆偓濞尖€愁嚕婵犳碍鏅插璺猴功椤旀帡鎮楃憴鍕婵炲眰鍊濆畷顐⒚洪鍛嫼闂佸憡绻傜€氱兘宕曢幇鐗堢厽婵°倓绶″▓姗€鏌熼獮鍨仼闁宠棄顦垫慨鈧柣妯活問閸氬懘姊绘担铏瑰笡闁告梹娲熼、姘额敇閻愨晜鐏侀梺闈涚墕椤︿即鍩涢幋鐐电闁煎ジ顤傞崵娆愵殽閻愭惌娈滈柡宀€鍠栭幃鐑芥偋閸繃鐏庨柣搴㈩問閸犳牠鈥﹂悜钘夌畺闁靛繈鍊栭幆鐐烘煕閿旇寮跨紒杈ㄧ叀濮婄粯绗熼埀顒€岣胯閹广垽骞掗幘鏉戝伎闂佹眹鍨归幉锟犲磹閸洘鐓曟い鎰Т閸旀粓鏌嶉柨瀣伌闁哄本绋戦埞鎴﹀幢濡ゅ﹣鎮ｆ俊鐐€曠换鍫ュ磿閻㈢ǹ钃熸繛鎴炵懄閸庣喖鏌ㄥ┑鍡橆棡婵絽鐗撻幃妤€鈻撻崹顔界亪濡炪値鍙冮弨杈ㄧ┍婵犲洤绠瑰ù锝呮憸閸樻悂姊虹粙鎸庢拱闁活収鍠氶懞杈ㄧ鐎ｎ偀鎷绘繛杈剧到閹虫瑨銇愰幒鎴濈彉濡炪倖甯掗崐濠氭儗濞嗘挻鐓欓弶鍫熷劤閻︽粓鏌℃担绋库偓鍧楀蓟閵娾晜鍋嗛柛灞剧☉椤忥拷

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/*
  【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
  实验二百一十四：WS2812B全彩RGB像素屏 8x32点阵LED显示屏 硬屏模块
  项目程序十八：应用Adafruit_NeoPixel库的入门极简程序
*/

#include <Adafruit_NeoPixel.h>
#define PIN        6 //接脚
#define NUMPIXELS 256 //数量
Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);
#define DELAYVAL 100 //延时

void setup() {
  pixels.setBrightness(22);//亮度
  pixels.begin();//启动
}

void loop() {
  pixels.clear();
  for (int i = 0; i < NUMPIXELS; i++) {
    pixels.setPixelColor(i, pixels.Color(50, 250, 0));
    pixels.show();
    delay(2);
  }
}

 

eagler8

实验场景图

 

 

eagler8

  【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）

  实验二百一十四：WS2812B全彩RGB像素屏 8x32点阵LED显示屏 硬屏模块

  项目程序十九：FHT音乐反应256位动态频谱灯

 

濠电姷鏁告慨鐑藉极閸涘﹥鍙忛柣鎴ｆ閺嬩線鏌涘☉姗堟敾闁告瑥绻橀弻锝夊箣閿濆棭妫勯梺鍝勵儎缁舵岸寮诲☉妯锋婵鐗婇弫楣冩⒑閸涘﹦鎳冪紒缁樺姍濠€渚€姊虹粙璺ㄧ闁告艾顑囩槐鐐哄箣閿旂晫鍘遍梺闈浨归崕閬嶅焵椤掆偓濞尖€愁嚕婵犳碍鏅插璺猴功椤旀帡鎮楃憴鍕婵炲眰鍊濆畷顐⒚洪鍛嫼闂佸憡绻傜€氱兘宕曢幇鐗堢厽婵°倓绶″▓姗€鏌熼獮鍨仼闁宠棄顦垫慨鈧柣妯活問閸氬懘姊绘担铏瑰笡闁告梹娲熼、姘额敇閻愨晜鐏侀梺闈涚墕椤︿即鍩涢幋鐐电闁煎ジ顤傞崵娆愵殽閻愭惌娈滈柡宀€鍠栭幃鐑芥偋閸繃鐏庨柣搴㈩問閸犳牠鈥﹂悜钘夌畺闁靛繈鍊栭幆鐐烘煕閿旇寮跨紒杈ㄧ叀濮婄粯绗熼埀顒€岣胯閹广垽骞掗幘鏉戝伎闂佹眹鍨归幉锟犲磹閸洘鐓曟い鎰Т閸旀粓鏌嶉柨瀣伌闁哄本绋戦埞鎴﹀幢濡ゅ﹣鎮ｆ俊鐐€曠换鍫ュ磿閻㈢ǹ钃熸繛鎴炵懄閸庣喖鏌ㄥ┑鍡橆棡婵絽鐗撻幃妤€鈻撻崹顔界亪濡炪値鍙冮弨杈ㄧ┍婵犲洤绠瑰ù锝呮憸閸樻悂姊虹粙鎸庢拱闁活収鍠氶懞杈ㄧ鐎ｎ偀鎷绘繛杈剧到閹虫瑨銇愰幒鎴濈彉濡炪倖甯掗崐濠氭儗濞嗘挻鐓欓弶鍫熷劤閻︽粓鏌℃担绋库偓鍧楀蓟閵娾晜鍋嗛柛灞剧☉椤忥拷

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/*
  【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
  实验二百一十四：WS2812B全彩RGB像素屏 8x32点阵LED显示屏 硬屏模块
  项目程序十九：FHT音乐反应256位动态频谱灯
*/

#include "FastLED.h"

#define OCTAVE 1 //   // Group buckets into octaves  (use the log output function LOG_OUT 1)
#define OCT_NORM 0 // Don't normalise octave intensities by number of bins
#define FHT_N 256 // set to 256 point fht
#include <FHT.h> // include the library
//int noise[] = {204,188,68,73,150,98,88,68}; // noise level determined by playing pink noise and seeing levels [trial and error]{204,188,68,73,150,98,88,68}


// int noise[] = {204,190,108,85,65,65,55,60}; // noise for mega adk
int noise[] = {204, 195, 100, 90, 85, 80, 75, 75}; // noise for NANO
//int noise[] = {204,198,100,85,85,80,80,80};
float noise_fact[] = {15, 7, 1.5, 1, 1.2, 1.4, 1.7, 3}; // noise level determined by playing pink noise and seeing levels [trial and error]{204,188,68,73,150,98,88,68}
float noise_fact_adj[] = {15, 7, 1.5, 1, 1.2, 1.4, 1.7, 3}; // noise level determined by playing pink noise and seeing levels [trial and error]{204,188,68,73,150,98,88,68}


#define LED_PIN     6
#define LED_TYPE    WS2812
#define COLOR_ORDER GRB


// Params for width and height
const uint8_t kMatrixWidth = 8;
const uint8_t kMatrixHeight = 32;//----------was 27
//#define NUM_LEDS (kMatrixWidth * kMatrixHeight)
#define NUM_LEDS    256

CRGB leds[NUM_LEDS];

int counter2 = 0;



void setup() {
  Serial.begin(9600);
  delay(1000);
  FastLED.addLeds<LED_TYPE, LED_PIN, COLOR_ORDER>(leds, NUM_LEDS).setCorrection( TypicalLEDStrip );

  FastLED.setBrightness (133);
  fill_solid(leds, NUM_LEDS, CRGB::Black);
  FastLED.show();
  // TIMSK0 = 0; // turn off timer0 for lower jitter
  ADCSRA = 0xe5; // set the adc to free running mode
  ADMUX = 0x40; // use adc0
  DIDR0 = 0x01; // turn off the digital input for adc0

}




void loop() {
  int prev_j[8];
  int beat = 0;
  int prev_oct_j;
  int counter = 0;
  int prev_beat = 0;
  int led_index = 0;
  int saturation = 0;
  int saturation_prev = 0;
  int brightness = 0;
  int brightness_prev = 0;

  while (1) { // reduces jitter

    cli();  // UDRE interrupt slows this way down on arduino1.0

    for (int i = 0 ; i < FHT_N ; i++) { // save 256 samples
      while (!(ADCSRA & 0x10)); // wait for adc to be ready
      ADCSRA = 0xf5; // restart adc
      byte m = ADCL; // fetch adc data
      byte j = ADCH;
      int k = (j << 8) | m; // form into an int
      k -= 0x0200; // form into a signed int
      k <<= 6; // form into a 16b signed int
      fht_input[i] = k; // put real data into bins
    }
    fht_window(); // window the data for better frequency response
    fht_reorder(); // reorder the data before doing the fht
    fht_run(); // process the data in the fht
    fht_mag_octave(); // take the output of the fht  fht_mag_log()

    // every 50th loop, adjust the volume accourding to the value on A2 (Pot)
    if (counter >= 50) {
      ADMUX = 0x40 | (1 & 0x07); // set admux to look at Analogpin A1 - Master Volume


      while (!(ADCSRA & 0x10)); // wait for adc to be ready
      ADCSRA = 0xf5; // restart adc
      delay(10);
      while (!(ADCSRA & 0x10)); // wait for adc to be ready
      ADCSRA = 0xf5; // restart adc
      byte m = ADCL; // fetch adc data
      byte j = ADCH;
      int k = (j << 8) | m; // form into an int
      float master_volume = (k + 0.1) / 1000 + .75; // so the valu will be between ~0.5 and 1.---------------------+.75 was .5
      Serial.println (master_volume);


      for (int i = 1; i < 8; i++) {
        noise_fact_adj[i] = noise_fact[i] * master_volume;
      }

      ADMUX = 0x40 | (0 & 0x07); // set admux back to look at A0 analog pin (to read the microphone input
      counter = 0;
    }

    sei();
    counter++;


    // End of Fourier Transform code - output is stored in fht_oct_out[i].

    // i=0-7 frequency (octave) bins (don't use 0 or 1), fht_oct_out[1]= amplitude of frequency for bin 1
    // for loop a) removes background noise average and takes absolute value b) low / high pass filter as still very noisy
    // c) maps amplitude of octave to a colour between blue and red d) sets pixel colour to amplitude of each frequency (octave)

    for (int i = 1; i < 8; i++) {  // goes through each octave. skip the first 1, which is not useful

      int j;
      j = (fht_oct_out[i] - noise[i]); // take the pink noise average level out, take the asbolute value to avoid negative numbers
      if (j < 10) {
        j = 0;
      }
      j = j * noise_fact_adj[i];

      if (j < 10) {
        j = 0;
      }
      else {
        j = j * noise_fact_adj[i];
        if (j > 180) {
          if (i >= 7) {
            beat += 2;
          }
          else {
            beat += 1;
          }
        }
        j = j / 30;
        j = j * 30; // (force it to more discrete values)
      }

      prev_j[i] = j;

      //     Serial.print(j);
      //     Serial.print(" ");


      // this fills in 11 LED's with interpolated values between each of the 8 OCT values
      if (i >= 2) {
        led_index = 2 * i - 3;
        prev_oct_j = (j + prev_j[i - 1]) / 2;

        saturation = constrain(j + 50, 0, 255); //-----------50 was 30
        saturation_prev = constrain(prev_oct_j + 50, 0, 255);
        brightness = constrain(j, 0, 255);
        brightness_prev = constrain(prev_oct_j, 0, 255);
        if (brightness == 255) {
          saturation = 50;
          brightness = 200;
        }
        if (brightness_prev == 255) {
          saturation_prev = 50;
          brightness_prev = 200;
        }


        for (uint8_t y = 0; y < kMatrixHeight; y++) {
          leds[XY(led_index - 1, y)] = CHSV(j + y * 30, saturation, brightness);
          if (i > 2) {
            prev_oct_j = (j + prev_j[i - 1]) / 2;
            leds[ XY(led_index - 2, y)] = CHSV(prev_oct_j + y * 30, saturation_prev, brightness_prev);
          }
        }
      }
    }



    if (beat >= 7) {
      fill_solid(leds, NUM_LEDS, CRGB::Gray);
      FastLED.setBrightness(200);



    }
    else {
      if (prev_beat != beat) {
        FastLED.setBrightness(40 + beat * beat * 5);
        prev_beat = beat;
      }

    }

    FastLED.show();
    if (beat) {
      counter2 += ((beat + 4) / 2 - 2);
      if (counter2 < 0) {
        counter2 = 1000;
      }
      if (beat > 3 && beat < 7) {
        FastLED.delay (20);
      }
      beat = 0;
    }

    // Serial.println();
  }
}



// Param for different pixel layouts
const bool    kMatrixSerpentineLayout = false;
// Set 'kMatrixSerpentineLayout' to false if your pixels are
// laid out all running the same way, like this:

// Set 'kMatrixSerpentineLayout' to true if your pixels are
// laid out back-and-forth, like this:

uint16_t XY( uint8_t x, uint8_t y)
{
  uint16_t i;

  if ( kMatrixSerpentineLayout == false) {
    i = (y * kMatrixWidth) + x;
  }

  if ( kMatrixSerpentineLayout == true) {
    if ( y & 0x01) {
      // Odd rows run backwards
      uint8_t reverseX = (kMatrixWidth - 1) - x;
      i = (y * kMatrixWidth) + reverseX;

    } else {
      // Even rows run forwards
      i = (y * kMatrixWidth) + x;

    }
  }

  i = (i + counter2) % NUM_LEDS;
  return i;
}

 

eagler8

实验场景图  动态图

点击上图查看Gif动图

eagler8

实验的视频记录

优酷：https://v.youku.com/v_show/id_XNTkxMjYwODI2NA==.html?spm=a2hcb.playlsit.page.1

B站：https://www.bilibili.com/video/BV1FG411j7Vr/?vd_source=98c6b1fc23b2787403d97f8d3cc0b7e5

 

 

eagler8

  【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）

  实验二百一十四：WS2812B全彩RGB像素屏 8x32点阵LED显示屏 硬屏模块

  项目程序二十：Arduino 和 FastLED多彩音乐灯

 

濠电姷鏁告慨鐑藉极閸涘﹥鍙忛柣鎴ｆ閺嬩線鏌涘☉姗堟敾闁告瑥绻橀弻锝夊箣閿濆棭妫勯梺鍝勵儎缁舵岸寮诲☉妯锋婵鐗婇弫楣冩⒑閸涘﹦鎳冪紒缁樺姍濠€渚€姊虹粙璺ㄧ闁告艾顑囩槐鐐哄箣閿旂晫鍘遍梺闈浨归崕閬嶅焵椤掆偓濞尖€愁嚕婵犳碍鏅插璺猴功椤旀帡鎮楃憴鍕婵炲眰鍊濆畷顐⒚洪鍛嫼闂佸憡绻傜€氱兘宕曢幇鐗堢厽婵°倓绶″▓姗€鏌熼獮鍨仼闁宠棄顦垫慨鈧柣妯活問閸氬懘姊绘担铏瑰笡闁告梹娲熼、姘额敇閻愨晜鐏侀梺闈涚墕椤︿即鍩涢幋鐐电闁煎ジ顤傞崵娆愵殽閻愭惌娈滈柡宀€鍠栭幃鐑芥偋閸繃鐏庨柣搴㈩問閸犳牠鈥﹂悜钘夌畺闁靛繈鍊栭幆鐐烘煕閿旇寮跨紒杈ㄧ叀濮婄粯绗熼埀顒€岣胯閹广垽骞掗幘鏉戝伎闂佹眹鍨归幉锟犲磹閸洘鐓曟い鎰Т閸旀粓鏌嶉柨瀣伌闁哄本绋戦埞鎴﹀幢濡ゅ﹣鎮ｆ俊鐐€曠换鍫ュ磿閻㈢ǹ钃熸繛鎴炵懄閸庣喖鏌ㄥ┑鍡橆棡婵絽鐗撻幃妤€鈻撻崹顔界亪濡炪値鍙冮弨杈ㄧ┍婵犲洤绠瑰ù锝呮憸閸樻悂姊虹粙鎸庢拱闁活収鍠氶懞杈ㄧ鐎ｎ偀鎷绘繛杈剧到閹虫瑨銇愰幒鎴濈彉濡炪倖甯掗崐濠氭儗濞嗘挻鐓欓弶鍫熷劤閻︽粓鏌℃担绋库偓鍧楀蓟閵娾晜鍋嗛柛灞剧☉椤忥拷

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/*
  【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
  实验二百一十四：WS2812B全彩RGB像素屏 8x32点阵LED显示屏 硬屏模块
  项目程序二十：Arduino 和 FastLED多彩音乐灯
*/

#include <FastLED.h>
#define SAMPLEPERIODUS 200
#define MIC_PIN A0
#define LED_DT 6
#define COLOR_ORDER GRB
#define LED_TYPE WS2812
#define NUM_LEDS 256
uint8_t max_bright = 33;
struct CRGB leds[NUM_LEDS];
CRGBPalette16 currentPalette = RainbowColors_p;
CRGBPalette16 targetPalette;

void setup() {
  pinMode(LED_BUILTIN, OUTPUT);
  LEDS.addLeds<LED_TYPE, LED_DT, COLOR_ORDER>(leds, NUM_LEDS);
  FastLED.setBrightness(max_bright);
}

float bassFilter(float sample) {
  static float xv[3] = {0, 0, 0}, yv[3] = {0, 0, 0};
  xv[0] = xv[1]; xv[1] = xv[2];
  xv[2] = sample / 9.1f;
  yv[0] = yv[1]; yv[1] = yv[2];
  yv[2] = (xv[2] - xv[0]) + (-0.7960060012f * yv[0]) + (1.7903124146f * yv[1]);
  return yv[2];
}

float envelopeFilter(float sample) {
  static float xv[2] = {0, 0}, yv[2] = {0, 0};
  xv[0] = xv[1];
  xv[1] = sample / 160.f;
  yv[0] = yv[1];
  yv[1] = (xv[0] + xv[1]) + (0.9875119299f * yv[0]);
  return yv[1];
}

float beatFilter(float sample) {
  static float xv[3] = {0, 0, 0}, yv[3] = {0, 0, 0};
  xv[0] = xv[1]; xv[1] = xv[2];
  xv[2] = sample / 7.015f;
  yv[0] = yv[1]; yv[1] = yv[2];
  yv[2] = (xv[2] - xv[0]) + (-0.7169861741f * yv[0]) + (1.4453653501f * yv[1]);
  return yv[2];
}

void loop() {
  unsigned long time = micros();
  float sample, value, envelope, beat, thresh, micLev;
  for (uint8_t i = 0; ; ++i) {
    sample = (float)analogRead(MIC_PIN);
    micLev = ((micLev * 67) + sample) / 68;
    sample -= micLev;
    value = bassFilter(sample);
    value = abs(value);
    envelope = envelopeFilter(value);
    if (i == 200) {
      beat = beatFilter(envelope);
      thresh = 0.02f * 75.;

      if (beat > thresh) {
        digitalWrite(LED_BUILTIN, LOW);

        int strt = random8(NUM_LEDS / 2);
        int ende = strt + random8(NUM_LEDS / 2);
        for (int i = strt; i < ende; i++) {
          uint8_t index = inoise8(i * 30, millis() + i * 30);
          leds[i] = ColorFromPalette(currentPalette, index, 255, LINEARBLEND);
        }
      } else {
        digitalWrite(LED_BUILTIN, HIGH);
      }
      i = 0;
    }

    EVERY_N_SECONDS(5) {
      uint8_t baseC = random8();
      targetPalette = CRGBPalette16(CHSV(baseC + random8(32), 255, random8(128, 255)),
                                    CHSV(baseC + random8(64), 255, random8(128, 255)),
                                    CHSV(baseC + random8(64), 192, random8(128, 255)),
                                    CHSV(baseC + random8(),   255, random8(128, 255)));
    }

    EVERY_N_MILLISECONDS(50) {
      uint8_t maxChanges = 24;
      nblendPaletteTowardPalette(currentPalette, targetPalette, maxChanges);
    }

    EVERY_N_MILLIS(50) {
      fadeToBlackBy(leds, NUM_LEDS, 64);
      FastLED.show();
    }

    for (unsigned long up = time + SAMPLEPERIODUS; time > 20 && time < up; time = micros()) {  }

  } // for i
} // loop()

 

eagler8

实验的视频记录

优酷：

B站：https://www.bilibili.com/video/BV1L14y157PU/?vd_source=98c6b1fc23b2787403d97f8d3cc0b7e5

 

 

eagler8

  【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）

  实验二百一十四：WS2812B全彩RGB像素屏 8x32点阵LED显示屏 硬屏模块

  项目程序二十一：通过快速傅里叶变换在8*32灯板上显示频谱

 

濠电姷鏁告慨鐑藉极閸涘﹥鍙忛柣鎴ｆ閺嬩線鏌涘☉姗堟敾闁告瑥绻橀弻锝夊箣閿濆棭妫勯梺鍝勵儎缁舵岸寮诲☉妯锋婵鐗婇弫楣冩⒑閸涘﹦鎳冪紒缁樺姍濠€渚€姊虹粙璺ㄧ闁告艾顑囩槐鐐哄箣閿旂晫鍘遍梺闈浨归崕閬嶅焵椤掆偓濞尖€愁嚕婵犳碍鏅插璺猴功椤旀帡鎮楃憴鍕婵炲眰鍊濆畷顐⒚洪鍛嫼闂佸憡绻傜€氱兘宕曢幇鐗堢厽婵°倓绶″▓姗€鏌熼獮鍨仼闁宠棄顦垫慨鈧柣妯活問閸氬懘姊绘担铏瑰笡闁告梹娲熼、姘额敇閻愨晜鐏侀梺闈涚墕椤︿即鍩涢幋鐐电闁煎ジ顤傞崵娆愵殽閻愭惌娈滈柡宀€鍠栭幃鐑芥偋閸繃鐏庨柣搴㈩問閸犳牠鈥﹂悜钘夌畺闁靛繈鍊栭幆鐐烘煕閿旇寮跨紒杈ㄧ叀濮婄粯绗熼埀顒€岣胯閹广垽骞掗幘鏉戝伎闂佹眹鍨归幉锟犲磹閸洘鐓曟い鎰Т閸旀粓鏌嶉柨瀣伌闁哄本绋戦埞鎴﹀幢濡ゅ﹣鎮ｆ俊鐐€曠换鍫ュ磿閻㈢ǹ钃熸繛鎴炵懄閸庣喖鏌ㄥ┑鍡橆棡婵絽鐗撻幃妤€鈻撻崹顔界亪濡炪値鍙冮弨杈ㄧ┍婵犲洤绠瑰ù锝呮憸閸樻悂姊虹粙鎸庢拱闁活収鍠氶懞杈ㄧ鐎ｎ偀鎷绘繛杈剧到閹虫瑨銇愰幒鎴濈彉濡炪倖甯掗崐濠氭儗濞嗘挻鐓欓弶鍫熷劤閻︽粓鏌℃担绋库偓鍧楀蓟閵娾晜鍋嗛柛灞剧☉椤忥拷

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/*
  【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
  实验二百一十四：WS2812B全彩RGB像素屏 8x32点阵LED显示屏 硬屏模块
  项目程序二十一：通过快速傅里叶变换在8*32灯板上显示频谱
*/

#include  "arduinoFFT.h" 
#include <FastLED.h>    

#define NUM_LEDS 256    
#define LED_TYPE WS2812 
#define COLOR_ORDER GRB 

arduinoFFT FFT = arduinoFFT(); 
CRGB leds[NUM_LEDS];           

#define CHANNEL A0 
#define DATA_PIN 6 

const uint8_t max_bright = 2;          
const uint16_t samples = NUM_LEDS / 4;
const byte halfsamples = samples / 2;  
uint8_t gHue;                          
int value;                             
double vReal[samples];                 
double vImag[samples];                 
char toData[halfsamples];              

int pointJump[halfsamples]; 
int uJump[halfsamples];     
int dJump[halfsamples];    

int uValue;                 
int dValue;                 
int tValue;                 
int toDown = 0;             
uint8_t toDownSpeed = 3;    
int pointDown = 0;          
uint8_t pointDownSpeed = 9; 

void setup(){
  delay(100);              
  Serial.println("Ready"); 
  FastLED.addLeds<LED_TYPE, DATA_PIN, COLOR_ORDER>(leds, NUM_LEDS).setCorrection(TypicalLEDStrip);
  FastLED.setBrightness(max_bright); 
}

void loop(){
  FastLED.clear();                         
  EVERY_N_MILLISECONDS(10) {
    gHue += 10;  
  }
  for (int i = 0; i < samples; i++)        
  {
    value = analogRead(CHANNEL); 
    vReal[i] = value;       
    vImag[i] = 0.0;         
  }
  
  FFT.Windowing(vReal, samples, FFT_WIN_TYP_HAMMING, FFT_FORWARD);
  FFT.Compute(vReal, vImag, samples, FFT_FORWARD);
  FFT.ComplexToMagnitude(vReal, vImag, samples);
  
  for (int i = 0; i < halfsamples; i++) 
  {
    toData[i] = vReal[i + halfsamples / 2];   
    toData[i] = constrain(toData[i], 0, 100); 
    toData[i] = map(toData[i], 0, 100, 1, 7); 
  }
  for (int i = 0; i < halfsamples; i++) 
  {
    uValue = toData[i];    
    uJump[i]++;            
    if (uValue > uJump[i]) 
    {
      uValue = uJump[i]; 
    }
    else
    {
      uJump[i] = uValue;
    }
    dValue = uValue; 
    toDown++;                      
    if (toDown % toDownSpeed == 0) 
    {
      dJump[i]--; 
      toDown = 0; 
    }
    if (dValue > pointJump[i]) 
    {
      dJump[i] = dValue; 
    }
    else
    {
      dValue = dJump[i]; 
    }
    tValue = uValue;                     
    pointDown++;                         
    if (pointDown % pointDownSpeed == 0) 
    {
      pointJump[i]--; 
      pointDown = 0;  
    }
    if (tValue > pointJump[i]) 
    {
      pointJump[i] = tValue; 
    }
    else
    {
      tValue = pointJump[i]; 
    }
    fill_rainbow(leds + 8 * i, uValue, gHue, 30);
    fill_rainbow(leds + 8 * i, dValue, gHue, 30);
    fill_solid(leds + 8 * i + tValue, 1, CRGB::White);
    
  }
  FastLED.show(); 
  delay(10);      
}

 

eagler8

实验场景图  动态图

 

 

eagler8

实验的视频记录

优酷：

B站：https://www.bilibili.com/video/BV1ge4y127bD/?vd_source=98c6b1fc23b2787403d97f8d3cc0b7e5

 

 

 

 

eagler8

实验场景图 

 

煮酒论道

168种传感器系列实验（214）---8x32位全彩WS2812B屏，很有意思，试试

eagler8

煮酒论道 发表于 2022-11-1 09:52 168种传感器系列实验（214）---8x32位全彩WS2812B屏，很有意思，试试

谢谢老师的鼓励

通途科技

万花丛中有点绿，加油，自己，加油每一个人。好好学习。天天向上。