Tuesday, August 12, 2014

Neopixel VU earrings - #wearable #arduino @adafruit

This hack was inspired by Adafruit Gemma Hoop Earrings and the first version of the earrings used an accelerometer instead of a microphone to react on the environment. Having trouble to create any good patterns with the accelerometer and found the small INMP401 mic, same as the bracelet use, it was a easy decision to switch to use a mic instead.

I build the earrings with Vesta Schelin


Hardware


Tooles

  • Soldering iron

Software



Circuit Diagram



Start by solder the ring and Gemma together.  D1 -> Data Input, GND -> GND and Vout -> Power 5v


Connect the mic on the front side A1 -> AUD, GND -> GND and 3Vo -> VCC. Important to use the 3.3v out from the Gemma and not Vout.


To add a power switch to the earrings desolder the positive pin on the jst connector. Plugin a female jst connector, not connected to a battery, when desolder otherwise the pin will move inside the connector.






Put the switch on different sids of the ear wires to differ left from right


Use dubble sided tape to attach battery


Code


Copy and upload the code to the Gemma






Want a VU bracelet instead check out 3D printed VU LED bracelet.

Happy hacking!
Marcus



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.

Hardware


Tooles

  • 3D printer
  • Soldering iron

Software


Model

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.

Code

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!
Marcus





Tuesday, June 17, 2014

Dr. Livingstone's festival hat - a VU meter Pith Helmet #wearable #arduino #diy #neopixel

This hack did I do together with Erik Stenberg. This started when I show him a top hat with LED strip and he said I have a Pith Helmet we should put LEDs on it.

Dr. Livingstone's festival hat

Hardware


Parts

Circuit Diagram

Connect the neopixels to D1 and the microphone to A1. The capacitor is for stabilizing the voltage, otherwise it will start to fluctuating when the battery is used for a while. Resulting in strange behaviour. 









Use thread with matching color to the hat to stitch it to the underside of the brim.  

Code

The code is a modified version of the code for Adafruits LED Ampli-Tie




Done


Happy hacking!

/Marcus