RGB Audio Backlight

• WS2812B RGB LED Stripe + Arduino Nano
• Switching modes via Button
• Tweaking mode settings via Potentiometer

See Instructables for details: Instructable

Audio Visualizer with MSGEQ7 Hardware

RGBStripe_MSGEQ7

• MSGEQ7 Circuit connected to Arduino
• Audio Spectrum Analyzer using MSGEQ7 Band outputs

Audio Visualizer with Fast Fourier Transformation (FFT)

• Audio Spectrum Analyzer only using Software (fix_fft)

Schematic

3D Printed Case

RGBStripe_FFT

• 3.5mm Aux connected to Analog Input of Arduino
• Audio Spectrum Analyzer using in Software FFT Algorithm to divide Signal in Audio Bands