CNC’d And Anodized Ti Engagement Rings

Ti

[Patrick] met someone, and then some stuff happened. Good for him. Because of this, [Patrick] found himself in need of a pair of engagement rings. With a friend, some titanium bar stock, and an awesome lathe, he turned out a few awesome rings and also managed to selectively anodize them with a subtle rainbow of colors.

RingsMaking a ring on a lathe is a relatively simple ordeal, but the two larger rings [Patrick] made (one was for a friend) featured some interesting patterns that aren’t easy to make without a good CNC setup. Luckily, this friend has an awesome CNC with a rotary fourth axis.

With the machining out of the way, [Patrick] then turned to anodization. This was done by constructing a simple power supply with a variac, four diodes, and a big honkin’ cap. He managed to get a good result with a sodium carbonate solution. He doesn’t have any good pictures of it, but by varying the voltage from 20 to 100 Volts, the color of the anodization will change from green, purple, to yellow, to blue.

Floreo: E-textililes And Moving Clothing

pedul [Alica] and [Jerika] are seniors in the Digital Culture program at Arizona State University and for their capstone, the wanted to take something that is traditionally male dominated and make it more female friendly. They chose e-textiles, which are most commonly extremely avant garde and nearly unapproachable with a lot of LEDs and zany mechanisms. Their initial designs reflected this, with multiple LED strips and huge shoulder pads. Then they discovered Flexinol shape memory actuator wire, and found this could be a much ‘softer’ integration of technology with haute couture.

[Jerika] and [Alica] chose to create an electronic flower, able to bloom with the help of a shape memory alloy. When a current is applied to the Flexinol wire, it contracts. Sewing these wires into laser cut fabric petals, the girls created a fabric flower that booms with the help of an LiliPad Arduino.

While they weren’t able to complete their dress due to electronic weirdness and burning out the wire too soon, they did succeed in creating a flower pin that demonstrated the intended effect.

Videos below.

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The PebblyPi: A Smart Doorbell

PebblyPi

A Pebble smart watch, and a Raspberry Pi. They are a perfect match. This is probably what [Daniel] thought when he embarked upon his latest project, a smart doorbell called the PebblyPi (tip submitted by [Ben]).

The actual project is quite easy to implement. All you need really need is a Raspberry Pi, a switch, a resistor, and a Pebble Smart Watch (plus a smart phone). Using a simple Python script on the Raspberry Pi, button press notifications are sent to Pushover, which allows the notification to arrive on your smart phone (and thus your Pebble Smart Watch). Pushover is a very cool notification service for Android devices, iPhones, iPads, and your Desktop. The concept behind this project is great, and the fact that it is so simple to implement opens up many other possibilities for interfacing your home electronics with the Pebble Smart Watch (or even just your smart phone). The ability to create custom notifications on any of your devices using any internet connected system is amazing!

You could receive notifications from your absurdly accurate weather station, or even your soil moisture monitor. Have you used Pushover in any of your projects? The possibilities are endless!

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Cadence Meter Proves Wearable Development Is All About Just Doing It

wearables-just-start-doing

 

The tech involved in the fitness world really empowers athletes, whether they’re serious or not, to improve their performance by providing empirical evidence. The Striker project focuses on cadence, which is the frequency of strides when running, or revolutions when pedaling. It uses a force sensitive resistor in the shoe to measure footfalls or power strokes.

The concept behind the device is solid, and there are consumer-grade devices already on the market that are capable of performing the same functions. In fact, a Garmin device is used to help measure the accuracy of the system. But we love to see bootstrapped projects, and this one distinguishes itself not only in finished product, but in the process itself. To us it screams: “What are you waiting for, build a prototype and then iterate!”.

The larger image above shows the earliest working version which is just a piece of fabric that wraps around the forearm to hold a 4-digit 7-segment display. The wire following the arm of the wearer snakes all the way down to the shoe to connect with the force sensor. The image to the right is the first wireless version of the readout. But the project has already seen at least two more versions after this one, mostly using SparkFun components.

We think this is but one example of the kind of stuff we want to see as contenders for The Hackaday Prize. The project uses Open Design and it’s arguably a connected device because the sensor and readout connect to each other (but ideally you’d want to add more connectivy to get at the data). The open nature of the build could lead to leaps forward in the technology by affording talented people wider development access.

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Roman Headgear Looks Less Silly With Lots of Blinky

centurion-project

Look, it’s not Steam-Punk because the period is way out of whack. And we’ve never seen ourselves as “that guy” at the party. But it would be pretty hard to develop The Centurion Project and not take the thing to every festive gathering you could possibly attend. This sound-reactive helm compels party-going in a toga-nouveau sort of way.

[Roman] tells us that it started as a movie prop. The first build step was to remove the plume from the top of it. The replacement — seven meters worth of addressable RGB LEDS — looks just enough like an epic mohawk to elicit visions of the punk rock show, with the reactive patterns to make it Daft. The unexpected comes with the FFT generated audio visualizations. They’re grounded on the top side of each of the LED strips. Most would call that upside-down but it ends up being the defining factor in this build. Seriously, watch the demo after the break and just try to make your case that this would have been better the other way around.

As a final note, this project was written using Cinder. It’s an Open Source C++ library that we don’t remember hearing about before.

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Eye Tracking With The Oculus Rift

ocu

There’s a lot you can do with eye and gaze tracking, when it comes to interface design, so when [Diako] got his hands on an Oculus Rift, there was really only one thing to do.

Like a few other solutions for eye tracking we’ve seen, [Diako] is using a small camera with the IR filter removed to read the shape and location of an eye’s pupil to determine where the user is looking. This did require cutting a small hole near one of the Oculus’ eye cups, but the internal camera works great.

To get a window to the world, if it were, [Diako] slapped another camera onto the front of the Oculus. These two cameras are fed into the same computer, the gaze tracking is overlaid with the image from the front of the headset, and right away the user has a visual indication of where they’re looking.

Yes, using a computer to know where you’re looking may seem like a rather useless build, but stuff like this is used in research and extraordinarily high tech heads up displays. Although he’s not using the motion tracking on the Oculus, if [Diako] were to do so, he’d have the makings of one of the most powerful heads up displays possible.

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