We use the mood information from the music to light up the background of the large monitors. The large monitors mirror what is going on the car stereo head unit. All the parts are from Adafruit. The car stereo uses usb/serial to communicate with the arduino.
You thought it couldn’t get better than our world-famous 32-LED-per-meter Digital LED strip but we will prove you wrong! These NeoPixel strips have 30 digitally-addressable pixel LEDs per meter and are very affordable and are only 12.5 mm wide, 10 mm if you remove the strip from the casing.