GrooveLights

GrooveLights is an RGB 5050 LED strip controller using arduino and node.js. This project was started to turn my back porch lighting into a music-controlled lightshow for a Halloween party. This project is based largely on two other projects, the Adafruit RGB LED Strip controller guide, and Noduino (see Sources).

Dependencies

The following are required to use this:

Hardware

• Arduino (Leonardo used, but Uno should also work, and any other with proper pin changes)
• 12V Power Supply
• RGB LED 5050 strip
• 3x IRF510 mosfets (or equivalent 18V or higher w/ greater than 2 Amps rating MOSFET)
• 3x ~220ohm Resistors
• Computer(s) (2 computers can be used to stream light values over wifi if you want)

Software

• Linux (Only necessary for Arduino controller, should work with any OS with minor tweaks to serial port value in code)
• Node.js (v0.10.15)
  • serialport (1.2.2)
• Web browser
• Arduino (1.0.3 or higher)
  • ecto/duino du.ino sketch (https://github.com/ecto/duino/blob/master/src/du.ino)

Other

• Grooveshark Plus or Anywhere account (sorry, I don't know how to access the frequency analyzer without the Visualizer)

Schematic

SEE: http://learn.adafruit.com/assets/2692 pins 3, 5, and 6 are used to control FETs, which switch negative on/off. Vin pin from arduino is at 12v, used on white/black (they differ on each LED strip model) +12v pin.

Sources

• Adafruit RGB LED Strips guide: http://learn.adafruit.com/rgb-led-strips/
• Noduino Arduino interface: http://semu.github.io/noduino/
• Duino (via Noduino): https://github.com/ecto/duino/
• TinyColor.js: http://bgrins.github.io/TinyColor/ (for HSV -> RGB)

TL;DR

Install dependencies

clone repo

open grooveshark, pick songs, open visualizer (you want the 3rd one down with the 7 bars)

nodejs lights.js in shell

run bookmarklet or run JS code in web JS console