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Une appli Android scanne tous les Raspberry Pi de votre réseau

Si vous avez plusieurs Raspberry Pi qui traînent chez vous, vous connaissez la galère du DHCP. Le routeur leur balance des IP différentes au gré des redémarrages, et impossible de savoir laquelle correspond à votre Pi-hole, votre Home Assistant ou votre média center sans aller fouiller dans l'interface admin du box.

Un développeur du nom de Philipp a sorti une appli Android qui résout ça en repérant automatiquement tous les Pi présents sur le LAN.

L'outil utilise deux méthodes de détection complémentaires. D'abord le MAC OUI, c'est-à-dire les premiers octets de l'adresse MAC qui identifient le constructeur du matériel. Tous les Raspberry Pi partagent une plage d'OUI réservée à la fondation, donc on peut les filtrer même au milieu d'une trentaine d'appareils connectés sur un même réseau.

Ensuite le mDNS, le protocole de découverte multicast qui permet à un Pi de répondre à raspberrypi.local même sans configuration serveur particulière.

L'appli n'est pas qu'un scanner. Elle embarque aussi les pinouts GPIO pour tous les modèles, du Pi 1 au Pi 5 en passant par le Zero et le Pico. Et quelques calculatrices électroniques pour les résistances, la loi d'Ohm et les diviseurs de tension. Du coup ça remplace les marque-pages que vous gardiez sur pinout.xyz et autres sites de référence quand vous bidouillez sur breadboard.

Le code est open source, dispo sur GitHub. Pas de pub. Suffisamment rare pour s'en réjouir, quand on voit les dizaines de scanners réseau sur le Play Store qui vous balancent une bannière toutes les trois secondes ou exigent une autorisation d'accès à votre carnet de contacts pour scanner un sous-réseau privé.

Philipp a clairement développé ça pour son usage personnel avant de le mettre à disposition, et ça se sent dans l'absence de fioritures.

À noter qu'il faut être sur le même sous-réseau Wi-Fi que les Pi pour que le scan fonctionne. Si vous avez segmenté votre réseau IoT, ce qui reste une bonne pratique côté sécurité, il faudra autoriser le multicast entre les VLAN ou faire le scan depuis un appareil branché côté domotique. Sinon le mDNS ne traverse pas et vous ne verrez que les Pi du segment courant.

L'intérêt va au-delà du simple gain de temps. Sur un parc Pi un peu costaud, savoir d'un coup d'oeil lesquels sont actifs permet de repérer rapidement un noeud qui a redémarré sans crier gare ou un conteneur tombé. Et pour ceux qui font du déploiement en série, c'est plus rapide que de scripter un nmap sur tout le /24.

Dans tous les cas c'est cool, un petit utilitaire qui résout un vrai problème quotidien et qui mérite sa place dans la boîte à outils de tout bidouilleur Pi. C'est par ici si ça vous branche .

Source : Hackaday

Air Purifier Filters Cost $100 a Year, but CUE Uses Water Instead

Air purifiers have become a common fixture in homes and offices, quietly working to keep indoor air breathable. Most of them follow the same basic formula, drawing air through a dry filter that captures dust, pollen, and airborne particles over time. When that filter reaches its limit, you throw it away and buy a replacement, or wash it if it’s the reusable kind. It’s a familiar routine, but not exactly a thoughtful one.

CUE Air Washer from Watervation is a 2-in-1 purifier and humidifier that takes a noticeably different approach. Rather than filtering air through a dry medium that slowly fills with grime, it washes the air with water, borrowing from how rain naturally clears the atmosphere of dust and pollen. It’s a concept that sounds simple in hindsight but actually changes quite a bit about how air care works.

Designer: Watervation

Click Here to Buy Now: $299 $575 (48% off). Hurry, only 41/975 left! Raised over $411,000.

The idea at the heart of CUE is surprisingly intuitive. Instead of holding contamination inside a dry filter, the device draws air through a water-based medium that strips airborne particles and gases from the air. Once the water turns dirty, you empty it, rinse the tank, and refill it, giving the device a clean start every day. There’s nothing to replace, and nothing to accumulate.

The technology behind CUE is Watervation’s patented RainTec system, and its most notable quality is what it doesn’t rely on. Most air washers need motorized water pumps to circulate liquid, but RainTec uses fluid dynamics instead. A spinning rotor generates a vacuum that draws water upward without any pump, eliminating the most common failure point in these devices and keeping the design considerably simpler.

What makes CUE genuinely practical is how naturally it handles two common problems at once. Dry air and airborne pollutants tend to go hand in hand, especially in bedrooms during winter or in home offices that don’t have great ventilation. Instead of running two separate appliances for purification and humidity, CUE handles both, covering spaces up to 300 sq ft, which fits most personal and domestic environments.

The ownership story is where CUE makes the strongest case for itself. Conventional air purifiers can cost over $100 per year in filter replacements alone, a figure that doesn’t stop growing the longer you use the device. CUE cuts that entirely by using water as its only medium. The maintenance routine comes down to emptying the tank, rinsing it, and refilling it with fresh water.

CUE is also one of those rare appliances that’s genuinely pleasant to leave out in the open. The cylindrical device has a dark upper housing and a clear lower tank that lets you watch the water action inside. There’s something calming about it. The swirling motion of water being spun and atomized gives the cleaning process a visible, almost meditative quality that isn’t common in this product category.

Performance testing by Korea Conformity Laboratories gives the product’s claims some independent backing. Results showed a 93.5% reduction in fine particulate matter, a 99.5% reduction in acetic acid, a 99% reduction in ammonia, and a 90% reduction in formaldehyde. The device also includes a built-in UV-C sterilization module that continuously disinfects the water tank while running, keeping the water hygienic throughout each cycle.

There’s a growing appetite for home appliances that earn their place on a shelf rather than hiding behind it. CUE Air Washer fits that thinking, handling air quality in a way that’s quieter, cleaner, and far less dependent on consumables than what came before. Watervation’s direction with this product hints at what home air care could look like when the design is as considered as the engineering behind it.

Click Here to Buy Now: $299 $575 (48% off). Hurry, only 41/975 left! Raised over $411,000.

The post Air Purifier Filters Cost $100 a Year, but CUE Uses Water Instead first appeared on Yanko Design.

No More Waiting in Line for Hot Water, This RV Heater Has 66,000 BTU

Summer has a way of changing the rules for RV travel. What was a relaxed weekend trip for one or two people becomes a full-blown family expedition, with everyone’s routines packed into the same tight space. Showers get longer, dishes pile up faster, and the morning rush gets more competitive. The systems you barely thought about in cooler months suddenly start to matter a great deal.

Hot water is one of the first things you notice when an RV can’t keep up. Waiting for the tank to recover, a cold burst just as you find a comfortable temperature, or having to ration usage when multiple people need the sink, these aren’t exactly the highlights of a road trip. The Fogatti InstaShower Ultra is a propane tankless water heater designed to change all of that.

Designer: Fogatti

Click Here to Buy Now: $799.99 $899.99 ($100 off). Hurry, deal ends in 48-hours. Website Link Here.

Picture a typical summer morning at a campground. Someone’s in the shower while another is getting breakfast going, and a third is at the sink washing up before everyone heads out for the day. That kind of simultaneous demand used to be a problem. With 66,000 BTU of rapid heating power and a maximum flow rate of 3.9 GPM, the InstaShower Ultra handles it without much fuss.

The end of a summer day outdoors tells a different story. Whether you’ve been hiking dusty trails, splashing around a lake, or just sitting in the heat all afternoon, everyone comes back to the RV needing a proper wash. A strong, steady shower makes that feel less like a chore and more like a reward, and you don’t have to queue up for it.

One of the more thoughtful bits of engineering is a built-in pre-mix system with a small mixing tank that balances temperature at startup. It addresses a familiar tankless annoyance, namely the cold burst before the heating kicks in. Once that’s handled, water comes out warm right away, and it’s the kind of improvement you only appreciate once it stops being a problem.

Temperature management doesn’t stop there, either. The heater uses segmented combustion that automatically adjusts heat output based on conditions. On a scorching summer afternoon, it scales back to prevent overheating. On a cool mountain evening or at higher altitudes, it ramps up accordingly. It’s a neat bit of self-regulation that keeps water temperature consistent, whether you’re parked in a sun-baked valley or somewhere up at 9,800 feet.

The InstaShower Ultra also activates at a flow rate as low as 0.5 GPM, which is considerably lower than what most standard tankless heaters require to kick on. That might seem like a minor detail, but it matters quite a bit on longer off-grid trips where every gallon counts. You aren’t forced to run the tap wide open just to get the heater going.

The weather is something a lot of buyers don’t think about until it’s too late. Summer storms roll in fast, and a water heater that can’t cope with heavy rain or strong gusts becomes a liability. HydroShield-Tech gives the InstaShower Ultra both windproof and waterproof resistance, with a NIDEC high-performance fan backing up the wind protection, so the heater keeps running when conditions outside take a turn.

For those still running on an older four- or six-gallon storage water heater, the InstaShower Ultra is a practical replacement. It comes with a door measuring 15 x 15 inches, designed to fit the cutout left by those older tanks, along with a decorative frame. Optional larger door frames are also available separately if your RV’s opening calls for a different fit.

Summer trips have a way of exposing which parts of the RV are actually ready for extended life on the road. A water heater might not top the pre-trip checklist, but it touches nearly every part of the daily routine, from the first shower of the morning to cleaning up after a late campfire dinner. Getting it right makes those routines a lot less stressful, and that’s the peace of mind that the Fogatti InstaShower Ultra delivers.

Click Here to Buy Now: $799.99 $899.99 ($100 off). Hurry, deal ends in 48-hours. Website Link Here.

The post No More Waiting in Line for Hot Water, This RV Heater Has 66,000 BTU first appeared on Yanko Design.

File Explorer feels outdated again after this Files update

Files 4.0.39 adds a customizable toolbar that makes Windows 11’s File Explorer feel outdated. Here’s why Microsoft should copy the feature and what the update includes.

Files 4.0 app promotional images on an ASUS Zenbook laptop screen.

A new Files update highlights another gap in File Explorer. Microsoft should copy it.

How to move the Windows 11 Taskbar and restore the classic look

One of the big frustrations in Windows 11 is the Taskbar, be it how it looks or the fact you can't move it. But this free, lightweight app is a simple way to do that while also giving it a nostalgic look.

An image of a Lenovo ThinkPad showing the Windows Central homepage open in Google Chrome with a Windows Vista style Taskbar thanks to the RetroBar app.

A modern laptop, but with a little Windows Vista flair.

This iPhone Air 2 Concept Adds Two Cameras and Suddenly the Phone Makes More Sense

Every first-generation Apple product is essentially a beta test with a premium price tag, and the iPhone Air was no exception. The engineering was genuinely remarkable: 5.6mm thin, a large ProMotion display, A19 Pro performance, and battery life that surprised nearly everyone who reviewed it. What wasn’t remarkable were the two omissions that showed up in every single hands-on: one camera and one speaker, on a phone that cost $999. Those two complaints alone handed buyers a perfectly logical reason to spend the same money on a Pro instead. The Air needed a second generation the moment the first one shipped.

Demon’s Tech has imagined exactly what that second generation could look like, and the concept renders suggest Apple already has a clear path to making the Air the phone it should have been from the start. The dual-camera bar is wide and confident across the top of the phone, housing two lenses with room to spare. The rest of the body is pure restraint, a flat back, centered Apple logo, and a color range vivid enough to give the phone a personality that its specs can now actually back up. If the rumored stereo speaker and efficiency-focused N2 chip join that camera upgrade, the Air 2 goes from interesting to genuinely compelling.

Designer: Demon’s Tech

Two 48-megapixel sensors reportedly sit inside the pill-shaped housing, one primary and one ultrawide, which aligns with leaks from Chinese tipster Digital Chat Station suggesting Apple is going for a main-plus-ultrawide configuration rather than a telephoto. That choice makes sense for the Air’s positioning. Telephoto glass demands physical depth that a sub-6mm chassis simply cannot accommodate, and ultrawide coverage is what most non-Pro users actually miss day-to-day. The original Air’s single-lens bar always looked slightly incomplete, like a sentence that trailed off mid-thought, and Demon’s Tech addresses that by stretching the new pill-shaped housing almost the full width of the phone’s upper third, sitting flush and purposeful rather than apologetic. It is a small change on paper that transforms the entire visual logic of the back panel.

Apple shipped the original Air in four relatively restrained options: cloud white, sky blue, light gold, and matte space black. Demon’s Tech blows that palette wide open, running through violet, cobalt, mint green, and vivid red alongside the sandy gold seen in the hero shots, which is closer to what the iPhone 5C attempted in 2013, a phone that led with color as a statement rather than a courtesy. The Air’s lifestyle positioning actually supports this approach in a way the 5C’s budget framing never quite did. A phone you buy partly because it is extraordinarily thin is a phone you buy to be noticed, and being noticed in muted gold is considerably less fun than being noticed in electric blue. The renders make a quiet argument that Apple’s colorway restraint on the original Air was a missed opportunity, not a deliberate choice.

Twelve gigabytes of RAM paired with the A20 Pro keeps the performance story simple: this is a phone that matches the Pro lineup on silicon even if it concedes on optics. The sleeper upgrade is Apple’s rumored N2 efficiency chip, because getting better battery life out of a body that physically has less room for cells requires exactly this kind of architectural work, the same discipline that let the original Air post competitive endurance numbers despite its dimensions. Add stereo sound from a bottom speaker alongside the existing top one, and the two most common complaints about the first Air evaporate inside a single product cycle. That is a more focused corrective than Apple managed with either the Mini or the Plus, both of which spent multiple generations struggling to justify their existence. If Apple lands all of this at the same $999 price point, the value math finally starts working in the Air’s favor.

Apple has confirmed the Air line continues, with the second generation reportedly targeting a spring 2027 release window, landing after the iPhone 18 Pro, Pro Max, and foldable models ship in fall 2026. That later window gives Apple’s engineering teams more time to solve the thermal and battery challenges that come with building capable hardware into an impossibly thin frame, and it gives the Air its own launch moment rather than forcing it to compete for attention against a foldable iPhone. Demon’s Tech’s concept is the best visual argument yet for what that launch moment could look like: a phone that carries its thinness as a given rather than an excuse, and finally has the camera system and audio to back up everything the form factor promises.

The post This iPhone Air 2 Concept Adds Two Cameras and Suddenly the Phone Makes More Sense first appeared on Yanko Design.

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