My Internet (and MIDI) controlled Necktie

Pinoccio Nexopixel Necktie 1

A necktie with NeoPixels sewed into it with conductive thread. Powered by Pinoccio

Internet connected wearable devices are getting more and more common these days. There are many devices available off-the-shelf right now, but there is something special about being able to imagine and create your own. To accomplish this, I truly think the best platform right now is to use a Pinoccio.

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SX-150 synth mod instructions, schematics and code

Many people have asked about the instructions and code for the SX-150 mod I did to add MIDI and Audio out, therefore I’m posting the plans for everyone to try. By using the Arduino as the brains of the operation, a lot of other options are available for the mod, really the sky is the limit. If you do any cool hacks to it, by all means, please let me know.

Parts List

Connections from the synth

Back of SX-150

The contact spots shown on the picture refer to the connections on the schematic. Just make sure to get these ones right and that the soldering joints you make are pretty solid.

Casing

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This part gives you a chance to be creative, so get your tools out and make something cool. For my mod, I used a cigar box, and made holes for all the cables that will get connected with the main circuit. I used epoxy to glue the gakken to the box and it is doing pretty well so far.

Just make sure that you will also be able to change the batteries when planning your holes.

Circuit Schematics

Schematics for the gakken sx-150 mod

Schematics for the gakken sx-150 mod


NOTE: It was brought to my attention that the connections P1 and P2 on the Gakken SX-150 are reversed on the schematic above.

Arduino Code

HakkenGakken.pde

Note that there is support on the code for a LED on digital pin 3 that flashes as notes are played. This has not been added on the schematics and it is optional.

If you improve the code, make some other cool mods or have questions, let me know!.

I’m now working on a standalone Arduino based MIDI sequencer on the cheap that can drive this little toy. Updates coming hopefully soon.

Gakken sx-150 arduino hack number two: Adding MIDI and Audio out

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I finally got around to finishing the hack to my Gakken SX-150 mini synth. On the first part I added the ability to be controlled by Arduino through a virtual software midi port. On this iteration, I added a real midi in port and I also added a 1/4′ plug audio out, to make it more usable with standard audio equipment. For more picture you can take a look at the flickr set.

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The MIDI part consisted in combining the Arduino MIDI IN circuit and the Voltage Control Circuit described on the first part of this hack.
And, this is how it sounds!

Burned Boss Giga Delay DD-20

Do not, I repeat DO NOT use a 16V adapter on a Boss DD-20 Giga Delay, or this will happen to you. I’m not sure what kind of chip is the one that burned, but its original writing was BJSL. If you know the chip that is burned (IC12) please let me know! I’d like see if I can fix this.

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Instrument-a-day

It seems that during February, other than my super favorite FAWM, there are plenty of other interesting things going on, that have the same “goal oriented” objective. Well, for one, there is the RPM Challenge, where you also do music, but you have to actually turn in a CD at the end of the month.
But, I just discovered this other one, Thing-a-day, where you pretty much pick your poison, do something everyday and document it. This also sounds pretty interesting, specially because some people are able to exploit their creativity, without being framed by a format or activity.
Case in point, (pretty awesome btw), this guy made one instrument a day for the month of February.

Ranjit’s A Hand-made instrument a day

Shameless plug for my CD: Next Door Ninja – Noise is for Everyone

It has been a couple of months since it has been released, but I never did the shameless plug in here so here it goes:
I have gathered the outcome of my FAWM 2008 participation and put it on a nice CD format and it is available for sale through CD baby. So… if you are feeling adventurous, why not buy it? is cheap! :)

NEXT DOOR NINJA: Noise is for Everyone

Here are a couple of full tracks, for your enjoyment.

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Mixed-up Logic [download]

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Sunday Morning [download]

Also, for more music, my myspace page is http://myspace.com/nextdoorninja