Introduction: Sound Activated LEDs

Ive always wanted lights to flash with the bass in my truck but the store bought lights don't work very well so I decided to build them myself. I used 100 each of red, green, and blue LEDs. I accidentally  recorded upside down cause I had to use my ipod to record cause my camera doesn't have a mic.

Step 1: Required Materials

For this instructable you will need the following tools:

Wire cutters
Small Needle Nose Pliers
Solder gun
Solder clamp
300 LEDs (for me)
60 51 ohm resistors
Wire (I used speaker wire)

Step 2: Make Holes

First you need to cut the binder to the desired shape and put the required number of holes in it for your LED array. I used 300 LEDs so I cut two rectangular pieces of binder and put 300 holes in each (1 for positive and 1 for negative).

Step 3: Insert LEDs Into Proper Holes

Next you need to put the LEDs in the holes in a pattern you like. I put them RGBRGBRGB.

Step 4:

Next you twist the ends of the LEDs together leaving the first positive and last negative sticking out to the side. Make sure you do it like in the pic or it won't work right.

Step 5: Solder the Resistors

Next solder the resistors together to make a negative "line" and do the same with the positive side.

Step 6: Attach the Wires

Next you need to solder the wire to their respected sides. I originally planed on wiring them up to a sound module but it didn't supply enough power to light up all the LEDs so I just wired them directly to my subs.

Step 7: Install

To install this I pushed needles through the board and bent them so I could slide it into the headliner.

Step 8: Final Thoughts

Overall it turned out great but it was a little brighter than I thought luckily my amp is on a switch so I can turn it on and off whenever I want.

LED Contest

Participated in the
LED Contest