The Wii controller will likely go down in history as the hacker’s favorite repurposed input device, and there’s no question that the Raspberry Pi is the community’s top pick in terms of Linux single board computers. So it should come as little surprise that somebody has finally given us the cross-over episode that the hacking community deserves: the PiChuk, a Pi Zero inside of Nintendo’s motion-sensing “nunchuk”.
Veterans of Wii Sports might be wondering how the hero of our story, a hacker by the name of [keycaps], managed to pull off such a feat. The Pi Zero is small, but it’s not that small. The trick is that the case of the nunchuk has been extended by way of a new 3D printed bottom half.
There’s more than just a Pi Zero along for the ride, as well. [keycaps] has manged to sneak in a 750 mAh LiPo and an Adafruit Powerboost, making the device a completely self-contained system. Interestingly, the original nunchuk PCB remains more or less untouched, with just a couple of wires connected to the Pi’s GPIO ports so it can read the button and stick states over I2C.
We know you’re wondering why [keycaps] went through the trouble of breaking out the HDMI port on the bottom. It turns out, the PiChuk is being used to drive a Vufine wearable display; think Google Glass, but without the built-in computing power. The analog stick and motion sensing capabilities of the controller should make for a very natural input scheme, as far as wearable computers go.
So not only could the PiChuk make for an awesome wireless input device for your next project, it’s actually a pretty strong entry into the long line of wearable computing devices based on the Pi. Usually these have included a DIY version of the distinctive Google Glass display, but offloading that onto a commercially available version is certainly a lot easier.
The personal computers in science fiction books, movies, and games are way cooler than the dinky pieces of hardware we’re stuck with in the real world. Granted the modern laptop has a bit more style than the beige boxes of yesteryear, but they still aren’t half as l33t as the custom PowerBooks in Hackers. Luckily for those who dream of jacking into the Matrix, the average hacker now has access to the technology required to make a custom computer to whatever fanciful specifications they wish.
A perfect example is this “cyberdeck” created by [Tinfoil_Haberdashery]. Inspired by William Gibson’s Neuromancer, this wild-looking machine is more than just a cosplay prop or conversation piece. It packs in enough power to be a daily-driver computer, as well as some special features which make it well suited for field work.
The body of the cyberdeck is 3D printed, but as [Tinfoil_Haberdashery] doesn’t have a 3D printer big enough to do the whole thing in one piece he had to break it up into subsections. He added a dovetail pattern to the edges of each piece, which makes for much stronger joint than simply gluing it together. A worthwhile tip if you ever find yourself in need of printing something really big.
Raspberry Pi aficionados might be disappointed to see the Intel NUC motherboard inside; which features a 3.4 Ghz dual-core CPU, 8 GB of RAM, and a roomy 500 GB SSD in an incredibly small package. To keep everything running the machine can take up to twelve 18650 cells, giving it a maximum run-time of sixteen hours or so. There’s even a 12 V power jack so he can power a soldering iron and other low voltage gadgets off of the deck’s batteries in a pinch. The integrated charger can take anywhere from 6 to 30 V, which gives [Tinfoil_Haberdashery] the ability to charge up from a wide array of sources.
But perhaps the best feature of the cyberdeck is the display. It uses a Fat Shark Transformer, a five inch 720p display designed for FPV drone use, which can not only fold flat against the deck for storage, but can be removed and slipped into a pair of goggles. This gives the cyberdeck a head mounted display that looks like something straight out of the movies. It even supports 3D, if you’re willing to cut the resolution in half.
Things have come a long way in the world of DIY head mounted computer displays. Really makes you wonder what the dedicated hacker is going to be able to pull off in another 10 years or so.
[Alain Mauer] wanted to build something like a Google Glass setup using a small OLED screen. A 0.96 inch display was too large, but a 0.66 inch one worked well. Combining an Arduino, a Bluetooth module, and battery, and some optics, he built glasses that will show the readout from a multimeter.
You’d think it was simple to pull this off, but it isn’t for a few reasons as [Alain] discovered. The device cost about 70 Euro and you can see a video of the result, below.
Continue reading “Hackaday Prize Entry: Head-up For High Voltage”
[Harris Shallcross] decided to build a pair of smart glasses and recently completed a first prototype of his project ‘Ochi’ – an STM32 based, BLE-connected, OLED eyeglass display. There are of course several homebrew smart glasses projects out there; many are more polished-looking and nearly all of them also display information from a smartphone over Bluetooth. This one is interesting partly because it highlights many of the design challenges that smart glasses and other near-eye displays face. It also demonstrates the iterative development process: begin by getting something working to learn what does and doesn’t cut it at a basic level, and don’t optimize prematurely; let the process bring problems to the surface.
For his project, [Harris Shallcross] used a small 0.95″ diagonal 96×64 color OLED as the display. The lens is from a knockoff Google Cardboard headset, and is held in a 3D printed piece that slides along a wire rail to adjust focus. The display uses a custom font and is driven by an STM32 microcontroller on a small custom PCB, with an HM11 BLE module to receive data wirelessly. Power is provided by a rechargeable lithium-ion battery with a boost converter. An Android app handles sending small packets of data over Bluetooth for display. The prototype software handles display of time and date, calendar, BBC news feed, or weather information.
Devices like these have a lot to deal with. Weight and distribution of that weight is a concern, the size and comfort of the optics is important, and displaying data on a small OLED is only part of the battle – choosing what information to display and when are vital to the device being actually useful in any way, otherwise it’s just a tech demo.
This project set out to show whether it was possible to use the parts listed to make a glasses mounted smart display that was at least somewhat functional, and the software to support it. Clearly, [Harris Shallcross] succeeded at that, but what really showcases the development process is his list of improvements – what he decided needs to go into a second version, and why. One of those goals is to improve the optics; perhaps there’s something to learn from The $60 Bluetooth Head Mounted Display project, which used a similar OLED and a prism to locate the display off to the side instead of in front.
Google Glass kind of came and went, leaving one significant addition to the English language. Even Google itself used the term “glasshole” for people who used the product in a creepy way. We can’t decide if wearing an obviously homemade set of glasses like the ones made by [Jordan Fung] are more creepy, give you more hacker cred, or just make you look like a Borg. Maybe some combination of all of those. While the cost and complexity of developing for Google Glass was certainly a barrier for hacking on that hardware, this project is just begging for you to build your own and run with the concept.
[Jordan’s] build, called Pedosa Glass, really is pretty respectable for a self-built set up. The Arduino Nano is a bit bulky, and the three push buttons take up some room, but it doesn’t kill the ability to mount them in a glasses form-factor. An FLCoS display lets you see the output of the software which [Jordan] is still developing. Right now features include a timer and a flashlight that uses the head-mounted white LED. Not much, we admit, but enough to prove out the hardware and the whole point would be to add software you wanted.
Admittedly, it isn’t exactly like Google Glass. Although both use FLCoS displays, Pedosa Glass uses a display meant for a camera viewfinder, so you don’t really see through it. Still, there might be some practical use for a little display mounted in your field of vision. The system will improve with a better CPU that is easier to connect to the network with sensors like an accelerometer — there’s plenty of room to iterate on this project. Then again, you do have an entire second ear piece to work with if you wanted to expand the system.
Check out the video demo after the break.
Continue reading “The Simplest Smart Glasses Concept”
Every day your eyeballs are assaulted by advertisements on your box of cereal, billboards, t-shirts, magazines, milk cartons, plastered on the side of buses, buildings, bananas, and written in the sky. [Reed], [Jonathan], [Tom], and [Alex] came up with a solution to this: a Brand Killer that censors all the advertisements and brands you see every minute of every day. It’s a real-world adblock that you can build right now.
The team’s system uses a custom head mounted display made from cardboard, goggles, a webcam, and a seven-inch display. The software for the system uses Python and OpenCV to monitor the images from the webcam, compares them against a list of brands and logos, and filters them out with an unobtrusive blur.
Right now the system just has a few brands and logos that include Dr. Pepper, Hershey’s, McDonalds, Facebook, Starbucks, and clear evidence this was built at UPenn, Wawa and Tastykake. In the video below, the detection and tracking of these various brands is very good. The system is also stereoscopic, meaning this is wearable all day, every day, without a loss of depth perception.
Continue reading “Real World AdBlock”
Ever since [will1384] watched “The Lawnmower Man” as a wee lad, he’s been interested in virtual reality. He has been messing around with it for years and even had a VictorMaxx Stuntmaster, one of the first available head mounted displays. Years later, the Oculus Rift came out and [will1384] wanted to try it out but the $350 price tag put it just out of his price range for a discretionary purchase. He then did what most of us HaD readers would do, try building one himself, and with a goal for doing it for around $100.
The main display is a 7″ LCD with a resolution of 1024×600 pixels and has a mini HDMI input. Some DIY head mounted display projects out on the ‘web use ski goggles or some sort of elastic strap to hold the display to the wearer’s head. [will1384] took a more industrial approach, literally. He used the head mounting system from a welding helmet. This not only has an adjustable band but also has a top strap to prevent the entire contraption from sliding down. Three-dimensional parts were printed out to secure the LCD to the welding helmet parts while at the same time creating a duct to block out external light.
Inside the goggles are a pair of 5x Loupe lenses mounted between the user’s eyes and the LCD screen. These were made to be adjustable so that the wearer can dial them in for the most comfortable viewing experience. The remote mounted to the top strap may look a little out-of-place but it is actually being used to capture head movement. In addition to a standard wireless remote, it is also an air mouse with internal gyroscopes.