Arduino Acrylic VU tower

thingiverse

For some reason I had an issue uploading the video to Thingiverse. Anyways, I designed this acrylic VU Tower that plugs into an audio port and a speaker. It's pretty cool and works well. You'll need 3/8" thick slabs of acrylic, 3"x5", which are friction fit so it's going to be tight. I printed two acrylic holders and Krazy Glued them together, then glued the base to it. To assemble this project, you will also need an audio splitter, an extra audio cable with 2 wires (also known as a Y-splitter or stereo extension cable), 5mm LEDs, which fit perfectly, Source code for the Arduino I found online by Kenny Vanpaemel and tweaked it to work with mine. The Arduino code is quite simple: int led[10] = {3, 4, 5, 6, 7, 8, 9, 10}; // Assign the pins for the LEDs int leftChannel = 0; int left, i; void setup() { for (i = 0; i < 8; i++) pinMode(led[i], OUTPUT); Serial.begin(9600); } void loop() { left = analogRead(leftChannel); Serial.println(left); left = left / 10; if (left == 0) { for(i = 0; i < 10; i++) digitalWrite(led[i], LOW); } else { for (i = 0; i < left; i++) digitalWrite(led[i], HIGH); for(i = i; i < 8; i++) digitalWrite(led[i], LOW); delay(0); } } It should work. Enjoy Printing Settings Printer: Prusa I3 Rafts: No Supports: No Resolution: 0.2mm Infill: 30%