Wearable Arduino mod for your headphones. Non-invasive procedure for headphones that don't have room inside the drivers or you don't want to hack apart your high end cans.

Adafruit just put out a tutorial for adding pattern blinking LED lights to headphones. This instructable takes it one step further.

This project is really the Adafruit Ampli-tie project morphed into a cool sound reactive LED light appliance for your headphones. It provides a visual audio meter or color organ that responds to the volume/amplitude of the audio heard in your headphones.

Daft Punk, call me.

Update Feb 2015: Look into the Adafruit Trinket, Gemma or Trinket Pro for a smaller microprocessor to use.

Step 1: Here Kitty, Kitty...

You need to get some products from Adafruit.com since there are some exclusive parts that they make.

You can actually use any Arduino but I am using the Adafruit Flora.  It is their wearable Arduino platform which I have used for many of my other ibles.

You need the microphone amplifier breakout module.

Instead of many sewable NeoPixel boards, you need to get two NeoPixel rings. A ring contains 16 RGB LED units with each pixel having its own constant current limiter chip built in.  No need for external resistors. The pixel units are already chained together, individually addressable and controlled by one data pin by I2C.

A battery pack for your Flora(4.5v, 3xAAA)

Hookup wire to get everything connected.

Male header pins and female header sockets to make detachable cables.

Zip-ties and tape to put everything together

And a set of headphones you want to mod.

CAUTION: Know how to work with electronics. Use care in soldering.

<p>Afraid not, @The End of A Heartache.</p><p>The Neopixel LEDs are current monsters. Those two rings, at full brightness, will consume a whopping 1700 mA of current. Solutions include permanently dimming the LEDs a little (they will still be very bright), lighting up one color at a time, and/or avoiding patterns that light every single LED the whole time.</p>
Looks great! Now find something to hide all the wires and it would look even better!
This is the prototype. And I &quot;borrowed&quot; the kid's headphones to<strike> sacrifice</strike> mod.
This is a great project and I have the same pair of sony headphone. <br> <br>The battery pack is huge Why not look for small lith-ion battery back on ebay. <br> <br>I have a micro battery pack 3.7v 200 Mamp Not sure if the ampere is right for the use :) but I want to try this out on my own headphone
I don't have a li-po battery pack...yet. Still working on using up the 48 pack of AAA from the wholesale club. You might be able to power up the Flora with that but I think the LED rings might take a little more juice. It also probably expects more closer to the 5v that USB puts out.
okie thank you for the information, with that in mind 2 li-po pack will do fine. I wonder whats the max voltage the Flora can handle. I know it can take up to 3 amps which is very powerful for such a small unit. I looked at the link which has more information about the Flora They did not tie in a USB to charge the battery or li-po and because the li-po can cause a fire hazard I agree with them working with light foam EPO RC airplane Li-po under charge gets very hot, have not measured temperature but I know you need at least a 10 minute cool down before charge and use on each pack. Only good thing about a lipo pack is a 2 cell to 3 cell unit :) which can give you 500 mamp to 1 amp of current.
Li-pos do pack more punch that regular alkalines or old chemistry rechargeables. I have used 9volts on my regular Arduino and I think both that and Flora have onboard voltage regulators. 12volts may be the max but probably not recommended.
Killer Project!
Pretty sweet. They look really amazing in the video. If only the battery pack and wires could be hidden somehow without opening the headphones, it'd be ready for everyday wear...
My real headphones have a cushion wrap around the headband so it wouldn't be hard to cover all the electronics with it and hide it there. You should get a few of the bare NeoPixel chips to fool around with. They are really bright and don't need external resistors.
how much is the total cost?
You can go to adafruit.com to price what you need <br>$25 Flora arduino <br>$7 Mic amplifier breakout <br>2x $10 NeoPixel RGB LED rings or you can get a bunch of the SMT NeoPixel chips or microboards to configure in your own pattern <br>$12 li-po battery or $2 battery case <br>misc wire/connectors/tie-wraps/tape <br> <br>Depends on what you have $50 - $75? <br>
Hey, get on down and strutt your funky stuff, man!
boogie oogie woogie...

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