[toymotorhead] pieced together this USB controlled power strip to help with his electrical bill. His goal was to be able to have devices turned off automatically when he shut down his computer as well as powered on when he turned his computer on. Another requirement was that the USB be isolated to protect the motherboard from spikes.
The cost of the parts in total were less than $30, and consisted of a solid state relay, some fuses, and some transient voltage surge suppressing diodes. The unit only switches power off or on depending on whether or not the computer is powered up, it doesn't control the outlets via software. He goes pretty in depth as to how everything works as well as showing nice diagrams and pictures. This should be a fairly quick and simple project, as long as you take the proper precautions for working with high voltage.
[whatsisface] sent in his scratch built clone of a Griffin PowerMate. The PowerMate... is just a big knob, so it's easy to see why more than one person has attempted this. [whatsisface] was inspired by a bit-tech post that did nearly the same thing, only they used the head out of a VCR for the knob. All the other components, like the optical encoder, are salvaged from a mouse, which we talked about in our scavenging How-To. He used a RC car tire for the actual knob. While we're sure it works great in dirt, we'd probably go with the weight and inertia of the VCR head instead. Have a look at the video below to see the knob being used with the Volumouse software.
If you've been puzzled over a discreet, durable way to sew wiring into your clothing, then puzzle no more: [Plusea] has put together a writeup detailing how to make a USB cable partly out of stretchy cotton fabric. Although the design as detailed doesn't give much practical use for the invention, we can think of several very effective ways of exploiting this toy. Imagine, for example, placing a USB battery pack into one pocket of a jacket, a portable digital audio recorder in the other, and a lavalier microphone in the lining, thus enabling dozens of hours of covert audio surveillance.
[Curiouslee] put up some pictures of his Siftables burn in. He got them in the mail with all their accessories and decided to make a special box to carry it all. He started with an ArtBin parts box and cut out dividers where necessary to make everything fit nice and tidy.
The Siftables are quite interesting. They are an information interface that is supposed to be more physical and natural. The analogy they use is a container of nuts and bolts can be sifted through quite easily using your hands. They envision us being able to sift through data similarly. They also mention that it could be used as a gestural interface as well.
[Julien Bayle] has posted this great breakdown of building an RGB monome clone. He is a musical performer using Ableton Live. He wanted to do away with the need for a computer screen and found that the monome would have been perfect had it been RGB. So he decided to build his own.
The parts list for the entire project is as follows:
He also has files for the schematics and source code as well as information on how to assemble and test it.
The RGB aspect is still under development. He is using the LEDMatrix-Serial Interface-RGB from Sparkfun Electronics to run it. It is expensive, but is exactly what he was looking for.
There aren't very many pictures of the project, and none of the working RGB unit. He makes up for it in sheer information. Many parts have links to manufacturers or support forums. Hopefully he'll post some pictures and video of the final product soon.
[Adrian Freed] posted this interesting fabric gesture controller called Tablo. It uses a stretchy conductive fabric, laid over a framework to create a curve known as the Witch of Agnesi. Holding the center of the fabric up is an inverted bowl covered with sections of conductive material. The whole thing is wired to a microcontroller that measures the resistance fluctuations when you press on the fabric. It is capable of measuring displacement and pressure as well as being multitouch.
They mention that the simple interface allows it to be used as a foot input as well as a hand input. We'd love to see a video of it in action.
A Microsoft research team has delivered a prototype called the UnMouse that could really be a big hit. This unit is a mouse pad sized sensor that is multitouch and pressure sensitive. It is flexible and thin enough to roll up. The article mentions that the construction of the device is "dirt cheap". This is very exciting; is this the next mouse?
The idea of having low cost multitouch input is very enticing. While there are many ways to do multitouch right now, most are limited by their large size due to projector/camera setups or high cost such as the iPhone. A portable (fits in your laptop bag) pressure sensitive multitouch input device is something that a lot of people have been craving for a while.
Just imagine the uses. Audio engineers could create new interfaces on the fly. You could draw a key map on piece of paper and just lay it on top. Graphic designers could use different sized and shaped brushes. Gamers could make their own ergonomically comfortable gaming layouts. How about covering one in Velcro and attaching buttons to it?
[Alison Lewis] has posted this fantastic digital wall harp project at My Home 2.0. They built an infrared MIDI instrument into a wall, using a MidiTron and some IR sensors. It all connects to a computer running a MIDI sequencer via a MIDI to USB converter. The project was built for a family home. They wanted something musical that they could play as easily as waiving their hand. They got it! Simply run your hand under the sensors and play some music!
[Nicolas] sent in his liquid display project.Think of it as the opposite of a fountain display. Instead of water, it releases bubbles into a flat panel filled with liquid. There aren't many details on the site, but it's a nice twist on an classic concept. He also created an odd sort of liquid interface. Touching the liquid in any of the three chambers in front causes changes in the reaction of the display.
[Eduard] sent in his IR webcam whiteboard project. He wanted something like the Wiimote version, but without the expense of a Wiimote. He added some film negative to the camera to reduce the amount of visible light picked up by the CCD. (He notes that you might need to pull the IR filter from your camera to get a decent signal.) The pen is the usual IR LED with a power supply. To do the actual work, he wrote a custom application in Java.
Check out this add on for that cheap USB missile launcher we know you bought last year. It uses ultrasonic sensors to provide sonar feedback for the aiming system. A PIC 18F455 drives a servo to aim the sensor and massage the signal from the sensor. It still depends on a PC application to put everything together. If you'd rather play with faster hardware, keep your eyes open for this years defcon bots contest.
While at The Last HOPE this year, we were fortunate enough to see Wiremap, a volumetric display made from thread. Using a projector and 256 individual strands of cotton thread, [Albert Hwang] produces 3D effects. The result is a visually stunning piece of work.
[kylemcdonald] has posted this how to build a simple 3D tracking interface. Using 6 resisters, some wire, aluminum foil, an Arduino, and a cardboard box, he was able to do 3D capacitive sensing. Coupling that with Processing, he was able to overlay an interface using augmented reality. The video above shows a 3D tic tac toe application. While it seems less than perfect, its pretty amazing for how simple it is.
Seen anything similar to this out there? What applications would be fun with this?
[sprite_tm]'s back with one of his excellent Atmel projects. This time he decided to turn an original XBox controller (cause he likes 'em) into a standard USB HID device. He gutted the custom USB chip that Microsoft installed and replaced it with an Atmel ATMega88. The ATMega required a few changes to the board, but nothing too off the wall.
