Thursday, July 31, 2014

LED Bracelet - VU meter. #3dprinting #wearable #arduino #music

New version of the LED Bracelet using a microphone to react to the sound around it. After my friend Petter and others nagged me about adding a mic to the bracelet I start to look for a small mic to use and found one at sparkfun.

Change the accelerometer to a mic, some miner change to the 3d-model to get the mic to fit and code from Adafruit LED Ampli-Tie it was up and running.



  • 3D printer
  • Soldering iron



Download at thingivers

Circuit Diagram

Connect the neopixels to pin 1 and the microphone to pin 2.

Added power switch.

Glue everything to place

Added som foam tape to de back of the mic

Mic version and acc version
The accelerometer module and microphone can be chanced depending what mode you are in.


The code is mostly from Adafruit LED Ampli-Tie

If needed it can dubble as a digital campfire late evenings at the beach.

You may have seen the earrings in the photos and video and want to build them? Be back next week for a how to guide :)  Build instruktions click here

Happy hacking!


  1. Do you have the STL file for this bracelet..?

  2. I wanted to thank you for this great read!! I definitely enjoying every little bit of it I have you bookmarked to check out new stuff you post. KRM Light+

  3. Great article Lot's of information to Read...Great Man Keep Posting and update to People..Thanks Affirmation Bracelet