Arduino LED Music Spectrum


Introduction: Arduino LED Music Spectrum

About: My life is Not only Writing Lines of Codes, But gaining something good. I'm simple in physical world but Very complex in ICT word.

In this tutorial I'm going to show you how to make LED Spectrum with arduino.

First make this LED Matrix for Arduino.

Use the Code on this Instructable below and upload it to arduino.(fixx_ftt files are the libraries)

Connect the Audio out of the music playing device to arduino Analog pin A0.

Make a comment thank you.



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    9 Discussions

    hey i have bit problem when i try upload code to arduino i get some error

    F77HKA9I4SCTVX9.ino:1:21: error: fix_fft.h: No such file or directory

    F77HKA9I4SCTVX9.ino: In function 'void loop()':

    F77HKA9I4SCTVX9:27: error: 'fix_fft' was not declared in this scope

    how i fix it mayby someone can help whit what?

    Hey, I've got the scrolling text working, added the fix_fft files through the libraries, but i'm getting a number of errors appearing for the cpp file:

    C:\Users\Liam\Documents\Arduino\libraries\fix_fft\fix_fft.cpp:55:7: error: 'prog_int8_t' does not name a type

    const prog_int8_t Sinewave[N_WAVE-N_WAVE/4] PROGMEM = {


    In file included from C:\Users\Liam\Documents\Arduino\libraries\fix_fft\fix_fft.cpp:1:0:

    C:\Users\Liam\Documents\Arduino\libraries\fix_fft\fix_fft.cpp: In function 'int fix_fft(char*, char*, int, int)':

    C:\Users\Liam\Documents\Arduino\libraries\fix_fft\fix_fft.cpp:204:28: error: 'Sinewave' was not declared in this scope

    wr = pgm_read_word_near(Sinewave + j+N_WAVE/4);


    C:\Users\Liam\Documents\Arduino\libraries\fix_fft\fix_fft.cpp:214:28: error: 'Sinewave' was not declared in this scope

    wi = -pgm_read_word_near(Sinewave + j);

    Don't you need to amplify before connecting to arduino?

    1 reply

    This works without any amplifier. I just connected this to my mobile phone headphone out and worked perfect.