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

First make this LED Matrix for Arduino. https://www.instructables.com/id/Arduino-LED-Scrolling-Text-Simple-Easy/

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.

<p>hey i have bit problem when i try upload code to arduino i get some error </p><p>F77HKA9I4SCTVX9.ino:1:21: error: fix_fft.h: No such file or directory</p><p>F77HKA9I4SCTVX9.ino: In function 'void loop()':</p><p>F77HKA9I4SCTVX9:27: error: 'fix_fft' was not declared in this scope</p><p>how i fix it mayby someone can help whit what?</p>
<p>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:</p><p>C:\Users\Liam\Documents\Arduino\libraries\fix_fft\fix_fft.cpp:55:7: error: 'prog_int8_t' does not name a type</p><p> const prog_int8_t Sinewave[N_WAVE-N_WAVE/4] PROGMEM = {</p><p> ^</p><p>In file included from C:\Users\Liam\Documents\Arduino\libraries\fix_fft\fix_fft.cpp:1:0:</p><p>C:\Users\Liam\Documents\Arduino\libraries\fix_fft\fix_fft.cpp: In function 'int fix_fft(char*, char*, int, int)':</p><p>C:\Users\Liam\Documents\Arduino\libraries\fix_fft\fix_fft.cpp:204:28: error: 'Sinewave' was not declared in this scope</p><p> wr = pgm_read_word_near(Sinewave + j+N_WAVE/4);</p><p> ^</p><p>C:\Users\Liam\Documents\Arduino\libraries\fix_fft\fix_fft.cpp:214:28: error: 'Sinewave' was not declared in this scope</p><p> wi = -pgm_read_word_near(Sinewave + j);</p>
<p>can you give us the shematiques i don't know how to read the ino file. thanks</p>
<p><a href="https://www.instructables.com/id/Arduino-LED-Scrolling-Text-Simple-Easy/" rel="nofollow">https://www.instructables.com/id/Arduino-LED-Scroll...</a> </p><p>hope helpful :)</p><p>sadeepa where are you :v</p>
<p>super bn </p>
<p>wprogram.h no such file directory... i got this error? any idea how to get rid of these.</p>
<p>i think the library is missing</p>
Don't you need to amplify before connecting to arduino?
<p>This works without any amplifier. I just connected this to my mobile phone headphone out and worked perfect.</p>

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Bio: 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.
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