ada yang punya layout audio spectrum analyzer…

ada yang punya layout audio spectrum analyzer...



15 thoughts on “ada yang punya layout audio spectrum analyzer…

  1. Stephanus Endarto

    /*
    LED bar graph

    Turns on a series of LEDs based on the value of an analog sensor.
    This is a simple way to make a bar graph display. Though this graph
    uses 10 LEDs, you can use any number by changing the LED count
    and the pins in the array.

    This method can be used to control any series of digital outputs that
    depends on an analog input.

    The circuit:
    * LEDs from pins 2 through 11 to ground

    created 4 Sep 2010
    by Tom Igoe

    This example code is in the public domain.

    http://www.arduino.cc/en/Tutorial/BarGraph
    */

    // these constants won't change:
    const int analogPin = A0; // the pin that the potentiometer is attached to
    const int ledCount = 10; // the number of LEDs in the bar graph

    int ledPins[] = {
    2, 3, 4, 5, 6, 7, 8, 9, 10, 11
    }; // an array of pin numbers to which LEDs are attached

    void setup() {
    // loop over the pin array and set them all to output:
    for (int thisLed = 0; thisLed < ledCount; thisLed++) { pinMode(ledPins[thisLed], OUTPUT); } } void loop() { // read the potentiometer: int sensorReading = analogRead(analogPin); // map the result to a range from 0 to the number of LEDs: int ledLevel = map(sensorReading, 0, 1023, 0, ledCount); // loop over the LED array: for (int thisLed = 0; thisLed < ledCount; thisLed++) { // if the array element's index is less than ledLevel, // turn the pin for this element on: if (thisLed < ledLevel) { digitalWrite(ledPins[thisLed], HIGH); } // turn off all pins higher than the ledLevel: else { digitalWrite(ledPins[thisLed], LOW); } } }

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