Punching Out Parts

December 22, 2009 by Jake W 13 Comments

If you’re more of a code monkey than artist, it may be tough to transform your ideas into the 3D models necessary for fabbing. The folks working on openSCAD apparently feel our pain.

openSCAD uses a language somewhat reminiscent of C for creating models. A preview of the model is rendered alongside your code. Fully cross-platform, it runs on Linux, OS X, and Windows. Much like SketchUp, openSCAD can also extrude 2D outlines into models. This feature comes in very useful if one already has a set of technical drawings for a part. With no price tag, it’s pretty affordable during this costly season.

BobLight Night Light Networking

December 22, 2009 by Jake W 10 Comments

It turns out that more than just pictures of women and flashing animations can be found on the X10 website. [Jonathan] based his BobLight project around the MS14A X10 module.

The idea for the devices started off as a Christmas gift for his parents in-law. A boblight turns on when motion is detected. It then communicates (through radio) with the other boblights to turn them all on. If motion is not detected by any of the boblights for a length of time, they all turn off. Rather than having the user shut all of them off every morning, a light sensor is used to automate the task.

Each boblight is a common LED utility light combined with the board of an MS14A and added a 310MHz RF receiver. He even hacked the board by replacing the onboard PIC with a higher spec model. We think [Jonathan] did a great job at implementing an innovative concept.

Fake Snow From An Arduino

December 21, 2009 by Jake W 13 Comments

The team at [Sosolimited] was contracted to create an interesting holiday window dispay for the HBO retail store in NYC. The Times Square display encorporates a board of LEDs and a machine for blowing the artificial snow particles around the enclosure.

The code for controlling the LED array was written on top of the open source C++ toolkit, openFrameworks and the entire setup is interfaced through an Arduino Duelmilanove. Multiple Sharp IR sensors were hooked up to the Arduino in order to detect the movement of observers, which in turn triggers fans to blow the ‘snow’ around. A National Control Devices relay board connects the heavy duty fans to the Arduino. This video demo shows just how attractive the project is in motion.

A Random USB… Hourglass

December 21, 2009 by Jake W 20 Comments

[Peter] thought of a creative, way to generate random entropy for under $100.

The USB Hourglass combines a sand timer with a rotating mechanism and an optical beam through the center of the timer to observe the falling sand. The amount of light reaching a detector is digitized at frequent intervals and processed by a microcontroller to determine when to rotate the hourglass. The digitized light levels are also sent by USB to a host PC where they can be used as a source of random entropy. Power is supplied over the USB cable.

With the USB Hourglass, the user can look at the sand falling through the center of the hourglass and monitor the randomness in the USB output data. And one can read the code line-by-line, compile it, and upload it to the microcontroller using only open-source and widely supported tools.

NXT Turing Machine

November 30, 2009 by Jake W 20 Comments

[youtube=http://www.youtube.com/watch?v=cYw2ewoO6c4]

This interesting use of Lego popped up on the mailing list of the University of Bergen. Build by a group of Norwegian Danish students, it’s a simple computer that implements Alan Turing’s design from 1937. Having both read and write functions, it implements its own (somewhat inefficient) medium of non-volatile memory. What we find interesting is that rather than move the ‘tape’ through the machine, the machine rolls over the tape. Thanks to [Thorsten] for the tip.

Xbox 360 Controller On NES

November 30, 2009 by Jake W 7 Comments

[youtube=http://www.youtube.com/watch?v=TzW0JAx2lFM]

Some may think that linking an Xbox 360 controller to an original NES console is overkill. [Francois] would not count him self among that group. When the robotics team at his school was done using the controller with one of their projects, [Francois] used a Cortex M3 processor to get it to run with one of Nintendo’s 8-bit consoles. Part of the code for using the controller with the robot and the NES is available. Now all that is left is being able to play Duck Hunt with a Sixaxis controller.

Xbox-intosh & An Atom-based Cube

November 29, 2009 by Jake W 31 Comments

Though [Will] is more of a PC guy, he needed a Mac to run the software he needed for his line of work (Final Cut). Making the best of an unfortunate situation, he constructed this hackintosh inside the case of Microsoft’s original gaming console – the Xbox. [Will] did a good job at documenting the build.

[Paul], who seems a bit more fond of Apple’s technology, still felt as though his hardware could use an overhaul. So he gutted his G4 Cube and dropped in an Intel Atom 330 based system to get his ultimate HTPC. To make controlling the 1 TB beast more fun, he hooked up a Wiimote through DarwiinRemote.