Bass-meter

#include                                            <FastLED.h>



#define LED_PIN                                     5
#define PIEZZO_PIN                                  A5

#define NUM_LEDS                                    8
#define BRIGHTNESS                                  255

#define LED_TYPE                                    WS2812B
#define COLOR_ORDER                                 GRB


CRGB leds[NUM_LEDS];
uint16_t piezzoValue                =               0;
uint32_t lastUpdate                 =               0;
uint8_t r, g, b                     =               0;


void fillLED();


void setup(void)
{
    delay(3000);

    FastLED.addLeds<LED_TYPE, LED_PIN, COLOR_ORDER>(leds, NUM_LEDS).setCorrection(TypicalLEDStrip);
    FastLED.setBrightness(BRIGHTNESS);
}

void loop(void)
{
    piezzoValue = analogRead(PIEZZO_PIN);

    if (piezzoValue > 10)
    {
        if (millis() - lastUpdate > 1000)
        {
            r = random(255);
            g = random(255);
            b = random(255);

            lastUpdate = millis();
        }

        piezzoValue = map(piezzoValue, 64, 512, 16, 225);
        FastLED.setBrightness(piezzoValue);
    }
    else
    {
        r = g = b = 0;
        FastLED.setBrightness(0);
    }

    fillLED();
    delay(50);
}


void fillLED()
{
    for (uint8_t i = 0; i < NUM_LEDS; i++)
    {
        leds[i].r = r;
        leds[i].g = g;
        leds[i].b = b;
    }

    FastLED.show();
}