Spectrum Analyzer & Vu Meter

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