Ikea Table Audio Visualizer

A light up coffee table that responds to music.

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An 8 band audio visualizer with bi-color LED matrix, all installed in a 2' x 2' table. This project is based on the MAKE Magazine Vol 51 project.

The original version of this project used a standard electret microphone to pick up the audio and the FFT Arduino library to analyze the signal.  I was not happy with the response; it was not clear and despite all of my attempts to tune it I could only pick up 3 or 4 channels at most.  In a previous project I used an MSGEQ7 spectrum analyzer and it worked fantastically.  I also added an external gain knob to adjust the response on the fly.


ino - 7.50 kB - 01/27/2018 at 03:26


  • Wiring Diagram

    AndyMac01/27/2018 at 04:09 0 comments

    This is the circuit embedded in the table.  The Arduino Uno feels a bit overpowered for this, but it was the quickest way to get both 3.3V and 5V power.  The second ground is important, as the microphone works best when using a dedicated ground connection.

    I built a small board to hold the through-hole components and MSGEQ7. 

  • Initial Test

    AndyMac01/27/2018 at 03:54 0 comments

    This is the best result I could get with the initial construction.  The response is very uneven and I cannot get the higher frequencies to register at all.

  • Success!

    AndyMac01/27/2018 at 03:52 0 comments

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