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https://www.thingiverse.com/thing:2911703
Spectrum Analyzer & Vu Meter by Linp74 is licensed under the Creative Commons - Attribution license.
http://creativecommons.org/licenses/by/3.0/

# Summary

Spectrum Analyzer & VU Meter 

2xLCD 16x2
2x Arduino Nano
2x Pot 10k (for Display)
1x Jack (5v Input)
2x RCA Input L+R

170x45x60 (WxHxD)

Related code:

VU Meter:
http://www.instructables.com/id/ARDUINO-VU-METER/

Spectrum Analyzer FFT
http://www.muhilham.com/2017/03/audio-spectrum-analyzer-arduino-lcd-2x16.html