ledvis install

Install all requirements & dependencies @ https://github.com/TheDeadGuy/ledvis#requirements first

git clone https://github.com/TheDeadGuy/ledvis.git
cd ledvis
cd /home/pi/ledvis/Services
sudo cp * /etc/systemd/system/

To run use following command:

sudo systemctl start flask.service ledvis.service

sudo is needed because this we are starting a system service

Requirements

This is meant to run on a Raspberry Pi. (original author used pi 3. I'm using pi 4)

• rpi_ws281x
• adafruit-ads1x15
• screen
• Flask

Run this to install the rpi_ws281x (LED) driver library

cd ~
git clone https://github.com/jgarff/rpi_ws281x.git
sudo apt install scons swig
cd rpi_ws281x
scons
cd python
sudo -H python setup.py build
sudo -H python setup.py install

And run this to install the other dependencies

pip install adafruit-ads1x15 --user	# install the ADS1015 i2c library
pip3 install Flask	--user			# get Flask (best to use python3)
sudo apt install screen python-matplotlib python-pyaudio		# get screen

Repo Organization

• run.py contains execture three processes: one to sample the ADC, one to process the data, and one to write to the LEDs
• visualizer.py contains classes the define how to process a sample array into color values to be displayed
• sound_processing.py contains functions for normalizing and smoothing the incoming audio signal
• masker.py contains functions for create a color mask given an amplitude (used in VooMeter in visualizer.py)
• config.py does what is sounds like it does

To get it to run automatically on the Pi

Run the following commands:

sudo systemctl enable flask.service ledvis.service