This is a simple Arduino sketch that controls a bunch of NeoPixel like addressable LEDs by the user’s touch input from the slider. This communication to the addressable LEDs is done with SparkFun qwiic, which is an Adafruit StemmaQT compatible protocol.
Just letting you know, I am not able to see or hear anything in the video.
If there was some sort of guide as to how the user can touch the sensor and knowingly control the colors (what sections correspond to what colors), that could make it a lot more user-friendly.