Ordinary glass stops electricity cold. It lets light through and blocks current completely. That combination works fine for windows and phone screens, yet it leaves the material useless as any kind of switch. A thin coating of indium tin oxide changes the rules. The layer is only 10 to 300 nanometers thick, nearly invisible, and still conductive enough to carry current from one edge of a small pane to the other.

Sokol ordered a pack of this coated glass for another project and decided to use a couple of the sheets as buttons. He took his multimeter to test the coating and was thrilled to see that it performed as predicted. One side of each sheet measured around 20 ohms, but the uncoated side remained nice and open, as you would expect from plain glass. The conductive coating is only applied to one side of the glass, so bear this in mind when using it.

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The button is made up of two of these panes, with their coated sides facing each other and a thin sheet of paper between them as a spacer. One pane is grounded, while the other is connected to an Arduino pin equipped with a pull-up resistor that keeps the pin at 5 volts even when the circuit is open. As long as the two conductive layers are apart, the pin reads high and the built-in LED remains dark; however, press down on the stack, and the glass flexes just enough for the coatings to make contact. Then current begins to flow, the pin drops to zero, and the LED illuminates immediately.

That’s the entire system, so no fancy sensors or drivers, just the old ITO film. The paper spacer keeps the surfaces from touching until you exert pressure, at which point the glass springs back and breaks contact when you let go. The whole thing is a little rudimentary and rough around the edges, but it does the job.

The same two sheets can do more than simply turn on and off. You can use the same concept to create a resistive touchscreen by applying a voltage gradient to one of the coatings, with half at 5 volts and half at zero. When the other coating makes contact, it detects the voltage where it touches and transmits it to an analog pin, which is where you receive your readout indicating where the push occurred. You can add another gradient to the opposite layer, resulting in two-dimensional placement. Sokol points out that a more polished version of this would require copper tape for consistent edges, external resistors for stable gradients, and larger glass, but the core concept is already present in the simple button.
[Source]

I’ve been a fan of PSB Speakers since I first auditioned the brand’s M4U 2 headphones back in 2013. Over its 50-plus years of operation, the Canadian outfit has consistently shown a knack for squeezing big sound into small packages. Never was that more apparent than in 2023’s Alpha iQ, a surprisingly versatile pair of powered bookshelves that pull more dynamism and musical expression out of a four-inch woofer and micro-tweeter than they have any right to.

The follow-up iQ1 and iQ2 stand firmly on the Alpha’s shoulders, offering similarly potent musicality and connectivity packed into miniature cabinets, with a woofer-tweeter stack swap that always throws my brain for a loop. The new pairs also share the Alpha’s flair for stylish minimalism, especially the pricier iQ2, which adds upgrades such as a wireless connection between the speakers and a more refined veneer in colors like Ember Red and Sandstone Beige.

While the iQ’s hardware is all PSB, daily operation relies heavily on BluOS’s powerful software, which handles virtually all controls and audio settings, provides access to more than 20 streaming services, and even supports multiroom audio with rock-solid stability. Unfortunately, I can’t say the same for the iQ2’s HDMI eARC TV connection, which proved doggedly inconsistent throughout my review. The iQ2 worked great for other use cases, but without a stable way to connect seamlessly to a TV in today’s market, the package falls well short of its promise.

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Setup: Long Haul Connection

Setting up the iQ2 isn’t a major hassle for tech-savvy users, but it’s not the push-button start you’ll get from multi-room setups like Sonos, recent app issues notwithstanding. PSB’s quick guide lays out a three-step process that includes simply plugging in the speakers and downloading the BluOS app for Wi-Fi setup, but the online manual hints that Ethernet is the best option where available. As if that were an omen, the iQ2 balked at my network’s 5 GHz Wi-Fi band during an AirPlay connection, leading to multiple stallouts.

Swapping to my split-off 2.4 GHz band fixed the issue, prompting an update and a paint-drying 20 minutes or so of total connection time between the speakers. The process included blasting surprisingly loud music from the primary speaker, which houses the connection hub, to designate it as the right or left channel, but I appreciate the ability to swap the orientation as needed. Users with particularly troublesome rooms should note that the iQ2 doesn’t offer dedicated calibration.

Controls and Usability: HDMI Issues

There’s also a learning curve for those new to BluOS, or even those like me who’ve been away for a few years. For example, going into the Players tab to find the iQ2’s settings unlocks basic playback controls and options like adding a subwoofer, but there’s no way to select an input. For that, you’ll need to consult the Music tab, which includes all physical inputs, input settings such as allowing the speakers to switch automatically when a signal is detected, and access to BluOS’s 20-plus streaming services and internet radio.

It feels overengineered for a pair of speakers, but that’s because the BluOS ecosystem is designed to let you group the iQ2 with more than 60 other compatible players throughout your home from brands like NAD, DALI, and Bluesound. The app is stable and thoughtful, with features such as haptic volume control, but I wish PSB included a physical remote for quicker access to inputs and other settings. Call me old-fashioned. You do get a few controls on top of the primary speaker, including play/pause, volume, and two programmable presets.

Controls aside, the iQ2’s hardware troubles were the real frustration. HDMI eARC is designed to provide a seamless, high-resolution connection between your TV and speakers, but the iQ2’s implementation was a mess. I experienced audio cutouts across multiple TVs, including instances where the TV recognized the speakers as a source but played no sound. PSB Speakers’ PR team told me this is a known issue and pointed to a firmware fix, but it didn’t work for my review pair.

Design & Features: Elegant Minimalism

The iQ2 make a great first impression, especially in the Sandstone color I reviewed, looking both stylish and understated. The cabinets feel well built, and their fingerprint-resistant veneers ensure that the refined aesthetic holds up. There’s solid heft to the compact cubes, though at under 10 inches tall, they looked almost comically small against the 75-inch Micro RGB TV I first paired them with, especially with their little magnetic hats that serve as acoustic grilles.

That said, the iQ2’s wireless connection means they can easily adapt to larger screen sizes, and there’s nothing comical about their 270 watts of Class D amplification. That works out to 90 watts for each speaker’s four-inch polypropylene mid-bass driver and 45 watts for each 0.75-inch aluminum-dome tweeter. PSB claims a frequency response of 65 Hz to 20 kHz, and the speakers dive toward that lower number with more authority than their size suggests.

A column of inputs on the back of the Primary speaker includes HDMI eARC, optical, USB-C playback, USB-A for external drives, a dual line-in/MM phono RCA input adjustable in the app, Ethernet, and a subwoofer output.

Streaming support includes Spotify Connect, TIDAL Connect, Qobuz Connect, and Apple AirPlay 2. You’ll find many more options in the BluOS app, including Deezer, Napster, and iHeartRadio, to name a few, but not Apple Music. Other streaming options include access to internet radio stations, local network files at up to 24-bit/192 kHz, and Bluetooth with aptX Adaptive.

Listening: Mighty Minis

I started testing the iQ2 via lossless Spotify Connect and was quickly reminded why PSB holds a special place in my mind’s cluttered library of audio brands. A bit like Canadians themselves, the iQ2 are unassuming at first, but digging deeper reveals an effective mix of confidence and depth. Their sound signature is clean, smooth, and effortlessly natural, with accurate stereo imaging and more bass than you’d expect from micro speakers.

With the iQ2 playing in the background as my pre-toddler arrived home from daycare, I was constantly distracted by their penchant for drawing out instrumental timbres, from satiny brass and woodwinds to gritty electric guitars and poppy percussion. They do a good job of leaning into different genres, with enough finesse to give each instrument its own space, from the dual vocals in Too Short’s “Money in the Ghetto” to the cacophonous horns in The Beatles’ “Good Morning.”

The warm midrange can make more laid-back mixes sound a little flat, but its keener topside adds some excitement to higher-register instruments and effects without feeling sharp or brittle. The sweet yet pointed treble makes easy work of speedy transients like the reverberating synths in Sweet Spirit’s “Baby When I Close My Eyes,” fluttering the effect back and forth across the stereo image with a deft touch that stands out more readily than in options like SVS’s Prime Wireless Pro.

Bass is firm and well-rounded, if not particularly revelatory, until you remember the size of the drivers, which outflex just about any four-inch woofers I’ve encountered, including options like U-Turn’s more rugged-sounding Ethos speakers. Even some larger 5.25-inch drivers provide less mid-bass punch. It’s enough groove to be tantalizing, but if you’re after raw emotional power, you’ll need a subwoofer. As usual, my SVS 3000 Micro was a great pairing, firming up the lowest frequencies with richer musicality and some sledgehammer punch while opening more space in the upper registers.

Turning to vinyl with my Orbit Theory turntable, the speakers showed off solid detail and dynamics on my go-to albums, such as Brubeck’s Take Five. Paul Desmond’s buzzy sax in “Blue Rondo” was rendered with keen precision, pulling out most of his breathy overtones. Joe Morello’s stick work had an expressive touch in moments such as his multitone tom play during the title song’s drum solo. I was less impressed when moving to the iQ2’s internal MM phono stage, which was both quieter and less precise than the Theory’s internal preamp, though that seems to be a common issue with powered speakers in this class. You can often do better with an external preamp.

Moving to TV and films, when the HDMI eARC port was working, the iQ2 proved more than up to the task of providing exciting sound effects at the sides of the stereo image and clear dialogue at the center, elevating the subtle diction in well-mixed productions like House of the Dragon. Again, the speakers brought a natural liveliness to effects such as stone hallways and bridges, crackling fires, and the woody creak of the show’s many oversized doors.

The Bottom Line

On paper, the PSB iQ models, especially the iQ1, provide a ton of value. You’ll spend a lot more to get the pricier iQ2’s wireless connection and fancier cabinets, but both models offer impressive connectivity and features matched by surprisingly good performance, especially in smaller rooms.

If not for the HDMI eARC issues I encountered, either pair would be a top pick for those after a compact system with connectivity to spare, not to mention the ability to group it with other systems in the BluOS family. As it stands, I can’t recommend the iQ1 or iQ2 until PSB Speakers can ensure simple, reliable connections for all your components.

For those seeking alternatives to the cheaper iQ1, I recommend SVS’s steadfast Prime Wireless Pro, which offers well-rounded sound and great connectivity in sleek, piano-gloss cabinets. If your budget is more in line with the iQ2, KEF’s LSX II provides similarly stylish design and colorways, along with even better sound performance. Neither pair offers multiroom capabilities, however, so if that’s important, you may need to look elsewhere or wait for PSB to provide a real fix.

Pros:

• Smooth and natural tonal balance
• Good instrumental separation
• Powerful bass for their size
• Stylish, well-built cabinets in multiple colors
• Loads of connectivity options
• BluOS multi-room audio support

Cons

• Setup and basic control could be simpler
• HDMI eARC cutouts are a mess
• Upgraded cabinets and wireless connection are pricey
• May need a subwoofer for larger rooms
• No included remote

Our Ratings

★★★★★★★★★★ Sound Quality

★★★★★★★★★★ Build Quality

★★★★★★★★★★ Usability

★★★★★★★★★★ Value

Where to Buy:

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The AI boom made GPUs famous. The dull chips that wire thousands of those GPUs together are quietly becoming just as valuable.

Xsight Labs, an Israeli chipmaker, has raised more than $300 million at a $2.8 billion valuation, it said on Thursday. Fidelity led the round. That is more than five times what the company was worth in 2021, a jump it made in a single year.

Xsight builds the plumbing of the AI data centre. Its two chips, the E1 processor and the X2 switch, shuttle data between servers, memory and networks. As models grow, moving that data has become one of the industry’s tightest bottlenecks, and the wiring between GPUs is now a prize of its own.

Taking on Nvidia’s other monopoly

Nvidia does not just sell the GPUs. It also dominates the networking layer, which it bought its way into with Mellanox. Xsight’s pitch is the opposite of that closed kit.

Its chips are open and programmable. They run standard Linux and SONiC, and operators can rewrite the X2 switch in software after it ships, instead of waiting for new silicon. The market wanted “a high-performance alternative to closed, legacy architectures,” said chief executive Yossi Meyouhas. Xsight joins a wave of startups chipping at Nvidia’s grip on the AI stack.

Already in orbit

This is not a lab project. Several global network operators have picked Xsight’s silicon, including SpaceX’s Starlink. Last week its processors passed a test aboard SpaceX’s new Starlink V3 satellites, Globes reported. Programmable chips suit space, where engineers fix a fault in software rather than swap out the hardware.

The selling point is efficiency. The E1 is the first 800-gigabit data processor to ship, and runs under 75 watts. The X2 moves 12.8 terabits a second while drawing 40% less power than older switches. As AI’s electricity bill balloons, every watt saved is a pitch.

A serial exit machine behind it

The pedigree helps. Veterans of EZchip, the Israeli networking firm Mellanox bought in 2016, founded Xsight in 2017, CTech reported. Its chairman is Avigdor Willenz, a serial chip entrepreneur who has sold past companies to Marvell, Amazon and Intel.

His backers followed him in. The round drew Fidelity, Intel Capital, T. Rowe Price, Battery Ventures and Valor Equity Partners, among others. The cash will fund the next chip generations and a bigger sales push at Tier-1 hyperscalers.

The money pouring into AI infrastructure is no longer chasing only GPUs. It is chasing everything around them, from power stations to the wires in the rack. Xsight is betting the winners in networking will be the open ones.

OpenAI CEO Sam Altman seemed excited to share what he called a “cool use case” on Friday, posting that parents could “connect your family calendars and explain your kids’ interests” to the company’s new product ChatGPT Work, then “every morning for the drive to school, have it make a podcast that talks about one kid’s soccer game that afternoon, one kid’s upcoming birthday, some news, etc.”

Altman’s post prompted lots of virtual eye-rolling, including a simple response from Alex Hirsch, creator of the animated series “Gravity Falls”: “What if you just talked to your children”?

Hirsch’s question seems to have gone even more viral than Altman’s initial post — while Altman’s comment has been reposted around 300 times and liked around 9,600 times (as of Saturday morning), Hirsch’s response has been reposted 9,000 times and received 122,000 likes.

This isn’t the first time a tech CEO has promised that AI can shield users — and specifically users’ morning commutes — from the messy realities of human experience. Last year, Microsoft CEO Satya Nadella said he’d stopped listening his favorite podcasts during his morning drive; instead, he asked an AI chatbot about those podcasts.

Altman’s post also echoed comments he’s made about parenting in the past, most notably when he appeared on “The Tonight Show with Jimmy Fallon” and declared, “I cannot imagine having gone through figuring out how to raise a newborn without ChatGPT.” (Though he was also quick to acknowledge, “Clearly, people did it for a long time, no problem.”)

Getting parents on-board seems to be a priority for OpenAI, which recently posted a job listing for a product manager with experience building trust-sensitive consumer experiences for parents and families.

But while the company has added safety features for parents, it also faces multiple lawsuits from parents and families alleging that ChatGPT played a role in loved ones’ delusions and suicides. (The company has said it’s “continuously improving how our models respond in sensitive interactions.”)

Remember when mobile gaming was fun?

Back in the day, you could just scroll the App Store, pick out an icon or two that you liked the look of, and have a new game downloaded and ready to play in just a few moments.

The glamorous part of AI is the models. The expensive, unglamorous part is getting them the right data. A startup just raised $40 million betting that job is the next big enterprise layer.

DataBahn, a Texas company founded in 2023, has closed a $40 million Series B led by Insight Partners, it said on Thursday. Forgepoint, GTM Capital and S3 Ventures joined. The round takes its total funding to $59 million.

DataBahn sells what it calls an “agentic data control plane.” In plain terms, it is a neutral layer between the systems that produce enterprise data and the ones that consume it, from security tools to data warehouses and, now, AI agents. Rather than shovel every log into every system, it reduces, enriches and routes only what is needed, and pulls extra context on demand.

The bill nobody can pay

The timing is not an accident. Companies now generate more telemetry than their tools can afford to process. Cloud transfer fees, storage, rising data volumes and AI inference costs are all climbing at once. Moving everything, everywhere, has become a bill few can justify.

AI sharpens the problem. Agents do not just answer questions; they act. That needs data that is current, well-structured and governed. A control plane can also decide what an agent is allowed to see, and log how each piece of data was changed and routed, a governance job that matters in regulated industries.

Less plumbing, more judgment

The product tries to move the smarts into the pipe. Cruz AI, its “data engineer,” watches for when a source changes format and breaks a pipeline, then drafts the updated parser for a human to approve. That replaces the slow work of hand-building each connector.

The pitch is landing. DataBahn reports revenue up more than 400% year on year, 180% net revenue retention and no customer churn. Fortune 100 firms in healthcare, finance, manufacturing and transport use it, including MVB Bank and the Canada Pension Plan Investment Board. It sells mostly through partners, plugs into Microsoft’s security stack, and grew out of the observability and security-telemetry world.

A crowded, buzzword-heavy field

There is a catch. Cribl, Splunk and the big cloud and security vendors all route and store data, and “agentic data control plane” is a label DataBahn has to prove is a real, separate layer. Its answer is neutrality: no lock-in to one store, one vendor or one model. It will show new features at Black Hat next month.

The wider bet is simple. The money flooding into AI infrastructure is starting to chase the plumbing, not just the models. DataBahn’s wager is that enterprises do not need to collect more data. They need to govern what they already have well enough for AI to use it.

Banning phones in schools. Yay or nay? It’s certainly a topic that’s raised debate on both sides in recent years as more states look to enforce stricter rules. Interestingly, however, it does appear that public opinion is starting to sway heavily towards the ‘pro ban’ camp.

A new report from the Pew Research Center has just concluded that an overwhelming 77 percent of adults surveyed now support a ban on phones in the classroom. That’s a massive increase from the 36 percent reported just two years ago.