Sunday, November 2, 2014

Halloween 2014 #ElectronicHalloween #steampunk #madscientist #arduino #neopixel

Some picture of my halloween costume =)

Alternative use of the mask

Two LightBlue Been
 Two LightBlue Been is used to control the goggles. One for a puls sensor and one for the animations. The Been are to slow with it's 8 Mhz to do both om one chip.

 Sugru and electrical tape is used to shield the light from the neopixel rings.

 A trinket pro is controlling the two neopixel rings in the mask and gets sound input from a mic inside.

Add caption
And don't let people withe makeup use the mask it will ends upp messy.

And some random creepy pics from the party

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



  • Soldering iron


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


Copy and upload the code to the Gemma

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

Happy hacking!

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!