Modern Sandbenders

11.00.35 - Mark

"I like your computer," she said. "It looks like it was made by Indians or something."

Chia looked down at her sandbenders. Turned off the red switch. "Coral," she said. "These are turquoise. The ones that look like ivory are the inside of a kind of nut. Renewable."

"The rest is silver?"

"Aluminum," Chia said. "They melt old cans they dig up on the beach cast it in sand molds. These panels are micarta. That's linen with this resin in it."

Years ago I read that bit of text in William Gibson's Idoru, and it's been an idea kicking around in my head ever since. I love the idea of casting a 3d circuit holding itself together in the air. The joy of functional art, from recleamed materials and repurposed parts.

It's not the sole reason I bought an Arduino to build a 3x3x3 LED cube, but the whole idea was rekindled by seeing an Arduino Skeleton [via HackADay]. While it's not the aluminum cast circuit Gibson talked about, a steel wire framed arduino is pretty close. I also like how there are some hints on how to make your own substrate less circuit. So tempting...

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Blink on, Blink off

01.08.29 - Mark

3x3x3 LED cube powered by an Arduino board This afternoon / evening, after a great weekend of camping, I finished up the Arduino powered 3x3x3 LED Cube I started on last week. I ended up making a run out to the local Radio Shack to get some transistors since I was too lazy to try and re-purpose some from the junk pile, then ended up walking out of the store with a breadboard and a jumper wire kit. Spent more than I would have liked to but I think it will end up being a sanity preserver.

The way I ended up wiring it is each column of LEDs gets a connection to an output pin of the Arduino board, and each level shares a cathode connection. Each level has a transistor being used as a switch that controls if the circuit is closed.

Now I'm into the programming part of the project. I'm setting up simple animations and I'm slowly exploring the control structures. Arduino is C based, so I'm recognizing a lot of similar syntaxes to PHP, but I'm getting used to the forced camelCasing (which is something I hate)

As I get more ambitious with the programming I think I'm going to try and add some random functions to it and see about connecting a microphone to one of the analog inputs and make it more of a light organ. I want to get a few more animation sequences developed first.

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Enough electronics to be dangerous...

02.10.43 - Mark

I've been playing with my Arduino board this evening, and while I have gotten it to work with my Mac, I'm only slightly past the basic LED blinking stage. I need to crack down and read up on the Arduino language and syntax before I try and get into more advanced projects. Not having a lot of spare cash on hand after buying the replacement S3, I'm using materials on hand for my projects, which right now means lots of LEDs. A while back I bought a couple hundred blue LEDs off eBay and they've been sitting around collecting dust, but I pulled them out tonight and I've soldered together 5 LEDs for experimenting with persistence of vision and I'm in the process of finishing a 3x3x3 LED cube similar to this MAKE Weekend Project from a few weeks ago. Somehow I don't think programming it is going to be as easy as building the LED cube...

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