SM16 - Strommessadapter, Gossen Metrawatt

PROXXON Metall- und Leitungssuchgerät MV 9 /Metallsuchgerät MV9 / No 22060

Monacor E-11B   35x14mm  1 Stk.

Lusya Professional VU Meter Driver Board DB Audio Level Meter Passive Treiberplatine Für Verstärker A5-020

LED VU-Meter-Bausatz

Selbstgebautes VU-Meter

• 1x Arduino Nano (mit FTDI)
• 1x U64 LED Panel
• 2x 10 KOhm Widerstände
• 1x MB102 Breadboard Spannungsversorgung
• 1x 10 uF 64 Volt Elektrolytkondensator
• 1x Stereo Klinken-Steckverbinder 3.5 mm Buchse

Abbindung: Gleiches NF Signal mit einem Gleichspannungsoffset.

#include <Adafruit_NeoPixel.h>

// Which pin on the Arduino is connected to the NeoPixels?
// On a Trinket or Gemma we suggest changing this to 1:
#define LED_PIN     13
// How many NeoPixels are attached to the Arduino?
#define LED_COUNT  64

// NeoPixel brightness, 0 (min) to 255 (max)
#define BRIGHTNESS 100

// Declare our NeoPixel strip object:
Adafruit_NeoPixel strip(LED_COUNT, LED_PIN, NEO_GRB + NEO_KHZ800);
// Argument 1 = Number of pixels in NeoPixel strip
// Argument 2 = Arduino pin number (most are valid)
// Argument 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)

#define analogPinLeft A5 // Left Audio Channel, connected to analog pin A5

int val_left_old = 0;  // variable to store the value read from Channel Left
int Base_Left = 0;   // 0 Basis

void setup()
{
  strip.begin();           // INITIALIZE NeoPixel strip object (REQUIRED)
  strip.show();            // Turn OFF all pixels ASAP
  strip.setBrightness(BRIGHTNESS); // Set BRIGHTNESS to about 1/5 (max = 255)
  Base_Left = analogRead(analogPinLeft);
  Base_Left += analogRead(analogPinLeft);
  Base_Left += analogRead(analogPinLeft);
  Base_Left += analogRead(analogPinLeft);
  Base_Left = Base_Left / 4;
  colorWipe(strip.Color(255, 0, 0), 5); // Red
  colorWipe(strip.Color(255, 255, 0), 5); // yellow
  colorWipe(strip.Color(0, 255, 0), 5); // Green
  rainbowFade2White(1, 1, 1);
}

void loop()
{
  Left_VU_Meter(64, 100);
  delay(40);
}

void Left_VU_Meter(byte Level_Max_Pixels, int sensitivity)
{
  int val_left = 0;
  val_left = analogRead(analogPinLeft);  // read the input pin
  val_left += analogRead(analogPinLeft);  // read the input pin
  val_left += analogRead(analogPinLeft);  // read the input pin
  val_left += analogRead(analogPinLeft);  // read the input pin
  val_left = val_left / 4;
  int Signal_Strength = val_left - Base_Left;
  if (Signal_Strength < 0) {
    Signal_Strength = - Signal_Strength;
  }
  byte VU_Led_Level =  map(Signal_Strength, 0, sensitivity , 0, Level_Max_Pixels);
  for (int i = 0; i < Level_Max_Pixels; i++) {
    strip.setPixelColor(i, 0, 0, 0);  // Clear pixel's color (in RAM)
  }
  for (int i = 0; i < VU_Led_Level; i++) { // For each pixel in strip...
    uint32_t hue = map(i, Level_Max_Pixels - 1, 0, 0, 21800);
    uint32_t rgbcolor = strip.ColorHSV(hue, 255, BRIGHTNESS); // Hue to RGB Conversation
    strip.setPixelColor(i, rgbcolor);         //  Set pixel's color (in RAM)
  }
  strip.show();   //  Update strip to match
}

void colorWipe(uint32_t color, int wait) {
  for (int i = 0; i < strip.numPixels(); i++) { // For each pixel in strip...
    strip.setPixelColor(i, color);         //  Set pixel's color (in RAM)
    strip.show();                          //  Update strip to match
    delay(wait);                           //  Pause for a moment
  }
}

void rainbowFade2White(int wait, int rainbowLoops, int whiteLoops) {
  int fadeVal = 0, fadeMax = 100;
  // Hue of first pixel runs 'rainbowLoops' complete loops through the color
  // wheel. Color wheel has a range of 65536 but it's OK if we roll over, so
  // just count from 0 to rainbowLoops*65536, using steps of 256 so we
  // advance around the wheel at a decent clip.
  for (uint32_t firstPixelHue = 0; firstPixelHue < rainbowLoops * 65536;
       firstPixelHue += 256) {
    for (int i = 0; i < strip.numPixels(); i++) { // For each pixel in strip...
      // Offset pixel hue by an amount to make one full revolution of the
      // color wheel (range of 65536) along the length of the strip
      // (strip.numPixels() steps):
      uint32_t pixelHue = firstPixelHue + (i * 65536L / strip.numPixels());
      // strip.ColorHSV() can take 1 or 3 arguments: a hue (0 to 65535) or
      // optionally add saturation and value (brightness) (each 0 to 255).
      // Here we're using just the three-argument variant, though the
      // second value (saturation) is a constant 255.
      strip.setPixelColor(i, strip.gamma32(strip.ColorHSV(pixelHue, 255,
                                           255 * fadeVal / fadeMax)));
    }
    strip.show();
    delay(wait);
    if (firstPixelHue < 65536) {                             // First loop,
      if (fadeVal < fadeMax) fadeVal++;                      // fade in
    } else if (firstPixelHue >= ((rainbowLoops - 1) * 65536)) { // Last loop,
      if (fadeVal > 0) fadeVal--;                            // fade out
    } else {
      fadeVal = fadeMax; // Interim loop, make sure fade is at max
    }
  }
  for (int k = 0; k < whiteLoops; k++) {
    for (int j = 0; j < 256; j++) { // Ramp up 0 to 255
      // Fill entire strip with white at gamma-corrected brightness level 'j':
      strip.fill(strip.Color(0, 0, 0, strip.gamma8(j)));
      strip.show();
    }
    for (int j = 255; j >= 0; j--) { // Ramp down 255 to 0
      strip.fill(strip.Color(0, 0, 0, strip.gamma8(j)));
      strip.show();
    }
  }
}