Kacper-Cyganik/Bluetooth-Audio-Visualizer

Audio Visualizer made with Raspberry Pi 3 & Python (and some math).

Audio Visualizer

About

Simple audio visualizer based on Raspberry PI, which can be connected to PC via bluetooth and stream music from YouTube.

Video presentation of working device:

Build Setup

• Hardware:

  • Raspberry Pi 3 (or other Raspberry PI with bluetooth module)
  • Led Matrix 32x8 + MAX7219
  • Oled display + SH1106

• Software:

  • Raspberry Pi OS
  • Python 3 and third-party packages:
    • numpy
    • scipy
    • luma.oled
    • luma.led_matrix
    • pybluez
    • pyaudio
    • python-vlc
    • youtube-search-python
    • pafy
  • ALSA

Wiring

1. MAX7219 (LED matrix)

LED pin	OPi pin (phys)	OPi pin name
VCC	pin 4	+5V
GND	pin 14	GND
DIN	pin 19	SPI0_MOSI
CS	pin 24	SPI0_CS0
CLK	pin 23	SPI0_CLK

2. SH1106 (OLED display)

DAC pin	OPi pin (phys)	OPi pin name
GND	pin 6	GND
VCC	pin 1	+3V
SCL	pin 5	SCL
SDA	pin 3	SDA

Configuration

1. I recommend you to read this to avoid problems with audio configuration on your Raspberry: https://github.com/maximtrp/spectrumLED#configuration
2. Enable SPI and PCM devices in Raspberry Pi OS.
3. Install required python packages.
4. Remember to change bluetooth addres to your own in Bluetooth_Client/config.py.

How to run

• Client (PC):

  • install all required packages
  • insert bluetooth address of your raspberry device in Bluetooth_Client/config.py
  • run Bluetooth_Client/main.py
  • if worked correctly, you should see something like this:

  

• Server (Raspberry):

  • install all required packages
  • run Bluetooth_Server/main.py

Credits

Audio processing function (Bluetooth_Server/led_matrix.py) is not mine and was entirely written by: https://github.com/maximtrp/spectrumLED