This library is a template for controlling a matrix of ws281x leds with a raspberry pi and an infrared touch screen
You will need to install two dependencies for this project to work BiblioPixel and rpi_ws281x. Both can be installed with pip3 as shown:
$ sudo pip3 install bibliopixel
$ sudo pip3 install rpi_ws281x
Once the dependencies are installed go ahead and clone this repo onto your machine.
You will need to calibrate your touch screen so you know where your leds are in relation to the values you get back from the touch screen device. You can run calibrate.py to see the values that come back when hovering over an led. I recommend using this file to find the minimum X value and maximum X value for an LED (as well as the min Y and max Y). Create the config for this screen in main.py as described in TouchCursorConfig. The config is a list of ranges that maps the min and max coordinates for each axis in the leds. The code provides examples of its structure. Basically I took my finger and ran it first in the X direction finding the value that came up at the start and end of each led. I did the same in the Y direction and made the config.
After the calibration, installation, and configuration is finished, you can run the animations with:
$ sudo python3 main.py