How to make a Reactive LED Piano Visualizer - Step by Step Guide

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Here is a step-by-step for making a reactive LED Piano Visualizer. All thanks to Frederick (Github: Onlaj) for the help.

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Here are the step by step instructions I followed original instructions here https://github.com/onlaj/Piano-LED-Visualizer

Parts List:
Raspberry Pi (Kit): https://amzn.to/3dOdmdY

Raspberry Pi (Presoldered GPIO): https://amzn.to/2QWQVcu

Power Adapter: https://amzn.to/39vGRxA

LCD Hat: https://amzn.to/2UsS3Xv

LED Strip: https://www.aliexpress.com/item/32832420003.html?spm=a2g0s.9042311.0.0.260f4c4dMUKJaH

Instructions:
1. Install Raspbian on RPi. (https://projects.raspberrypi.org/en/projects/raspberry-pi-setting-up)
2. Connect the LED strip to RPi. Just follow the instructions from this guide to make wired connections. You can skip the commands this guide has for "Preparation and Installation" (https://tutorials-raspberrypi.com/connect-control-raspberry-pi-ws2812-rgb-led-strips)
3. Enable SPI (https://www.raspberrypi-spy.co.uk/2014/08/enabling-the-spi-interface-on-the-raspberry-pi/)
4. Configuring automatic midi connection - Follow the instructions here for configuring automatic midi connection and skip everything else from the guide. If you want to also configure midi Bluetooth, the follow those optional steps from this guide. In my case i just wanted to light the led from my piano so i skipped the bluetooth. (https://neuma.studio/rpi-as-midi-host.html)
5. Open a terminal window and run the following commands (I recommend running the commands one by one so if there is an error you can easily see it)

sudo apt-get install libjack0
sudo apt-get install libjack-dev
sudo apt-get install libasound2-dev
pip install RPi.GPIO
pip install webcolors
pip install psutil
pip install mido
pip install Pillow
pip install python-rtmidi
pip install rpi-ws281x

git clone https://github.com/onlaj/Piano-LED-Visualizer.git

6. At this point everything should be setup. to test you can go to the folder containing the cloned library and test if things are working

cd Piano-LED-Visualizer
sudo -E python visualizer.py

Once everything works you can break out to command prompt by pressing CTRL+C

7. (optional) If you intend to use this device only for the LED visualizer, i changed the boot settings to automatic in non gui mode and configured autostart for the script

At the command prompt:
sudo raspi-config
- Select “Boot Options” then “Desktop/CLI” then “Console Autologin”
- save and exit

sudo nano /etc/profile
- scroll to the very bottom and insert the following command
sudo -E python /home/pi/Piano-LED-Visualizer/visualizer.py &
- Type “Ctrl+X” to exit, then “Y” to save followed by “Enter” twice.
- sudo reboot - everything should work now and the visualizer program should auto start when you reboot.

Видео How to make a Reactive LED Piano Visualizer - Step by Step Guide канала AP Music