Computer-controlled Music-synchronized Flashing Christmas Tree Lights





Introduction: Computer-controlled Music-synchronized Flashing Christmas Tree Lights

Use solid-state relays to blink the lights on your Christmas tree in time with music. Also good for Halloween haunted houses.

Step 1: Acquire and Set Up a Christmas Tree

Get a nice large, healthy tree set up in front of your biggest windows. See How to Pick and Decorate a Christmas Tree for more details.

Step 2: Add Lights

String lots of lights onto the tree. Use as many sets as you like, but arrange them such that there are three light regions, each with a separate plug. Run these three plugs down the trunk so they can easily be attached to the light controller. Up to three strings of lights can usually be linked in series, so you can almost certainly cover even big trees.

Step 3: Hook Me Up

Plug light strings into the controller you built for Halloween: Attach computer and sound system. Select high-quality Christmas music and sync the lights with a winamp plugin:

Step 4: Run With It

Fire up the music, and treat your friends, family, and entire neighborhood to a great light now. If you really want to share, hook the music up to your outside speaker system and make the house shake in time to the music.



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    I built a digital color organ beat detector by creating two RC integrators per channel, with the time constant of each integrator set slightly longer than the other. These two "average" signals were fed to a comparator. The audio level charges the longer RC integrator to a more average level than the RCI with the shorter RCI, allowing peaks and changes in the signal to trip the comparator. It works like a champ for any kind of music.


    what time constants did you use on the RC circuits? did you put a lowpass filter in front of them? and i guess you put a diode to half-wave rectify before the RC circuit?

    Can you send me one please because I have Cerebral Palsy so I can't wire please send me one for the holidays? Thank, Mike

    Anybody know how to run this from dos? My laptop has a system that I biult on it 'cause it wouldn't let me load any other system that I had onto it when it crashed, but it runs from dos. If you can get the windows commands, I can translate it into my system.

    what winamp plugin did you use


    If you want to build some really nice DMX based stuff for christmas lights check out the site for neat diy stuff.

    what song was playing in the first third of your video? TGT

    Does anyone know who the band was, or where I can find, the Techno Nutcracker CD? I can't remember the CD title or the band. I know the whole suite was done techno style and Sugar Plum Fairy really kicked, but that's it. Thanks Jon