Meta’s Ray-Ban Display Glasses And The New Glassholes

It’s becoming somewhat of a running gag that any device or object will be made ‘smart’ these days, whether it’s a phone, TV, refrigerator, home thermostat, headphones or glasses. This generally means somehow cramming a computer, display, camera and other components into the unsuspecting device, with the overarching goal of somehow making it more useful to the user and not impacting its basic functionality.

Although smart phones and smart TVs have been readily embraced, smart glasses have always been a bit of a tough sell. Part of the problem here is of course that most people do not generally wear glasses, between people whose vision does not require correction and those who wear e.g. contact lenses. This means that the market for smart glasses isn’t immediately obvious. Does it target people who wear glasses anyway, people who wear sunglasses a lot, or will this basically move a smart phone’s functionality to your face?

Smart glasses also raise many privacy concerns, as their cameras and microphones may be recording at any given time, which can be unnerving to people. When Google launched their Google Glass smart glasses, this led to the coining of the term ‘glasshole‘ for people who refuse to follow perceived proper smart glasses etiquette.

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Brilliant Labs Has New Smart Glasses, With A New Display

Brilliant Labs have been making near-eye display platforms for some time now, and they are one of the few manufacturers making a point of focusing on an open and hacker-friendly approach to their devices. Halo is their newest smart glasses platform, currently in pre-order (299 USD) and boasting some nifty features, including a completely new approach to the display.

Development hardware for the Halo display. The actual production display is color, and integrated into the eyeglasses frame.

Halo is an evolution of the concept of a developer-friendly smart glasses platform intended to make experimentation (or modification) as accessible as possible. Compared to previous hardware, it has some additional sensors and an entirely new approach to the display element.

Whereas previous devices used a microdisplay and beam splitter embedded into a thick lens, Halo has a tiny display module that one looks up and into in the eyeglasses frame. The idea appears to be to provide the user with audio (bone-conduction speakers in the arms of the glasses) as well as a color “glanceable” display for visual data.

Some of you may remember Brilliant Labs’ Monocle, a transparent, self-contained, and wireless clip-on display designed with experimentation in mind. The next device was Frame, which put things into a “smart glasses” form factor, with added features and abilities.

Halo, being in pre-release, doesn’t have full SDK or hardware details shared yet. But given Brilliant Labs’ history of fantastic documentation for their hardware and software, we’re pretty confident Halo will get the same treatment. Want to know more but don’t wish to wait? Checking out the tutorials and documentation for the earlier devices should give you a pretty good idea of what to expect.

Supercon 2024: Photonics/Optical Stack For Smart-Glasses

Smart glasses are a complicated technology to work with. The smart part is usually straightforward enough—microprocessors and software are perfectly well understood and easy to integrate into even very compact packages. It’s the glasses part that often proves challenging—figuring out the right optics to create a workable visual interface that sits mere millimeters from the eye.

Dev Kennedy is no stranger to this world. He came to the 2024 Hackaday Supercon to give a talk and educate us all on photonics, optical stacks, and the technology at play in the world of smart glasses.

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Smart Glasses Read Text

You normally think of smart glasses as something you wear as either an accessory or, if you need a little assistance, with corrective lenses. But [akhilnagori] has a different kind of smart eyewear. These glasses scan and read text in the user’s ear.

This project was inspired by a blind child who enjoyed listening to stories but could not read beyond a few braille books. The glasses perform the reading using a Raspberry Pi Zero 2 W and a machine learning algorithm.

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A Closer Peek At The Frame AR Glasses

The Frame AR glasses by Brilliant Labs, which contain a small display, are an entirely different approach to hacker-accessible and affordable AR glasses. [Karl Guttag] has shared his thoughts and analysis of how the Frame glasses work and are constructed, as usual leveraging his long years of industry experience as he analyzes consumer display devices.

It’s often said that in engineering, everything is a tradeoff. This is especially apparent in products like near-eye displays, and [Karl] discusses the Frame glasses’ tradeoffs while comparing and contrasting them with the choices other designs have made. He delves into the optical architecture, explaining its impact on the user experience and the different challenges of different optical designs.

The Frame glasses are Brilliant Labs’ second product with their first being the Monocle, an unusual and inventive sort of self-contained clip-on unit. Monocle’s hacker-accessible design and documentation really impressed us, and there’s a pretty clear lineage from Monocle to Frame as products. Frame are essentially a pair of glasses that incorporate a Monocle into one of the lenses, aiming to be able to act as a set of AI-empowered prescription glasses that include a small display.

We recommend reading the entire article for a full roundup, but the short version is that it looks like many of Frame’s design choices prioritize a functional device with low cost, low weight, using non-specialized and economical hardware and parts. This brings some disadvantages, such as a visible “eye glow” from the front due to display architecture, a visible seam between optical elements, and limited display brightness due to the optical setup. That being said, they aim to be hacker-accessible and open source, and are reasonably priced at 349 USD. If Monocle intrigued you, Frame seems to have many of the same bones.

Chatting About The State Of Hacker-Friendly AR Gear

There are many in the hacker community who would love to experiment with augmented reality (AR), but the hardware landscape isn’t exactly overflowing with options that align with our goals and priorities. Commercial offerings, from Google’s Glass to the Microsoft HoloLens and Magic Leap 2 are largely targeting medical and aerospace customers, and have price tags to match. On the hobbyist side of the budgetary spectrum we’re left with various headsets that let you slot in a standard smartphone, but like their virtual reality (VR) counterparts, they can hardly compare with purpose-built gear.

But there’s hope — Brilliant Labs are working on AR devices that tick all of our boxes: affordable, easy to interface with, and best of all, developed to be as open as possible from the start. Admittedly their first product, Monocle, it somewhat simplistic compared to what the Big Players are offering. But for our money, we’d much rather have something that’s built to be hacked and experimented with. What good is all the latest features and capabilities when you can’t even get your hands on the official SDK?

This week we invited Brilliant Lab’s Head of Engineering Raj Nakaraja to the Hack Chat to talk about AR, Monocle, and the future of open source in this space that’s dominated by proprietary hardware and software.

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Cutting A Wearable Display In Half Is Harder And Simpler Than It Seems

In the world of hardware hacking, you sometimes spend a ridiculous amount of time debugging a problem, only to find a simple solution that was right in front of you the whole time. [Zack Freedman] got a good dose of this while building the Optigon V2, a modified Epson Moverio wearable display he uses as a teleprompter in all his videos. He prefers having the teleprompter over his left eye only, but the newer version of the Moverio would shut off both sides if one is disconnected, so [Zack] needed a workaround.

Looking for some help from above, [Zack] requested developer documentation for the display module from Epson, but got declined because he wasn’t a manufacturer or product developer. Luckily, a spec sheet available for downloaded from the Epson website did contain a lot of the information he needed. An STM32 monitored the temperature of each display module over a pair of independent I2C interfaces, and would shut down everything if it couldn’t connect to either. This led [Zack] to attempt to spoof the I2C signals with an ATmega328, but it couldn’t keep up with the 400 kHz I2C bus.

However, looking at the logs from his logic analyzer, [Zack] found that the STM32 never talked to both display modules simultaneously, even though it is capable of doing so. Both displays use the same I2C address, so [Zack] could simply connect the two I2C buses to each other with a simple interface board, effectively making the left display “spoof” the signals from the right display.

Wearable displays need some fancy optics to be practical, you can’t just stick an OLED to your face. Two other interesting projects from [Zack] are his modular mechanical keyboard and the Gridfinity 3D printed storage system.

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