32 Band LED Audio Spectrum Analyzer | Arduino Nano + MAX 7219

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Here I present you a 32 Band LED Audio Spectrum Analyzer made with a Arduino Nano and a MAX 7219 4x LED Dot matrix panel. 4 patterns were included and you can cycle through those with the push button. And the power off memory is there to keep the selected pattern in the memory when power restarts. Special thank goes to “Shajeeb” who is the original maker of this project. Full arduino code is linked below.

ඔන්න VU Meter, Audio Spectrum Analyzer වලට කැමති අයට 32 Band LED Audio Spectrum Analyzer එකක් අරන් ආවා. මූලික වශයෙන් අවශ්‍ය වෙන්නේ Arduino Nano හෝ UNO බෝර්ඩ් එකයි MAX 7219 4x LED ඩිස්ප්ලේ එකයි (Rs.1000) විතරයි. Push බටන් එකෙන් අවශ්‍ය පැටර්න් එක තෝරා ගන්න පුලුවන්. ඒ වගේම Power OFF පැටර්න් මෙමරි එකත් තියනවා. ට්‍රයි කරලා බලන්න.

Visit my other VU Meters & Audio Spectrum Analyzer Projects here
https://www.youtube.com/playlist?list=PL4dsTE_604guMdq4JkY5jswRFKaiiRbVB

“32_Band_LED_Spectrum_Analyzer” Arduino Code and Arduino Libraries
https://drive.google.com/file/d/1taX9Kzq6KBbLv9ntHRv-pQEpLuqWzBA0/view?usp=sharing

Parts List
Arduino Nano x 1
MAX 7219 4x LED Dot Matrix x 1
Momentary push button x 1
4.7K Ohm Resistor x 3
100K Ohm Resistor x 1
10K Ohm Resistor x 1
1uF Capacitor x 2
3.5mm Stereo female jack x 2


Main Parts Links
Nano-3.0v-ATmega328-5V-16M-CH340 (Arduino Nano)
https://www.duino.lk/Mother-Board/Nano-3.0r-ATmega328-5V-16M-CH340-with-USB-Cable

MAX7219 Dot Matrix Module 4 In One Display 5 Pin
https://www.duino.lk/Related-Accessories/MAX7219-Dot-Matrix-Module-4-In-One-Display











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