Friday, November 22, 2013

Don't look at me LED jar - Build guide.

This is a fairly easy project to build and only need some soldering and gluing. Video and background to this project can be found here.



  • Spotify
  • Node.js
  • Arduino

Build it

Start by splitting up the led strip to eight half meter stripes and solder it together. The resistors are for reduce ringing and cross-coupled signals. 

Glue the stripes to the jar and put the beat stripe/ring inside the jar. The IKEA jar I'm using is really hard to get the glue to stick to the frosted part ended up using som sort of super glue.

The led strip can be ordered from Adafruit or aliexpress 


Firmware for teensy

Node.js app

Happy hacking!

Wednesday, November 20, 2013

Don't look at me LED jar. #spotify #mmhw #arduino

Running test program

For Malmö music hack weekend (MMHW) I decided to hack something with LEDs. I had the idea of building a led wall that reacted on music and showed different animations. So I ordered 4 meters of 144 LED/m led stripes, a PSU to handel the load of 576 LEDs and a Teensy 3.0. Sadly I didn't finish on time for the presentations and only had the LED wall running a test program to blind the audience with at the end of the hack.

Of corse I had it sort of running before the evening was over.

A week after the hack I start rebuilding it and put it on a big IKEA jar.

Led strip splited up to 8 half a meter strains and glued to the jar.


Running test program

In action

And it can do text to!

The name "Don't look at me LED" is because of when turned up to full brightness it is really hard to look straight at it.

Want to build one? Be back in a week or so for the instructions. 
Build instruction

Happy hacking!