D-Link DCS-2530L: recensione telecamera di sorveglianza per la casa
Negli ultimi anni sono arrivate sul mercato tantissime telecamere destinate a sorvegliare la propria casa. D-Link offre un’ampia gamma di prodotti in questo segmento di mercato, al fine di soddisfare la maggior parte delle esigenze. In questa recensione completa andiamo a scoprire più la D-Link DSC-2530L, una videocamera WiFi panoramica Full HD. Si tratta di un prodotto pensato per offre un ampio campo visivo a 180 gradi e molteplici funzionalità. Non resta, quindi, che scoprire più in dettaglio quali sono i principali punti di forza e i punti deboli della nuova DSC-2530L di D-Link.
Unboxing D-Link DSC-2530L
La D-Link DCS-2530L si presenta in una confezione molto semplice, di dimensioni ridotte e facile da aprire. Il sigillo di garanzia, invece, permette di essere sicuri che nessun altro abbia già aperto la scatola e utilizzato, in precedenza, la videocamera.
Al suo interno sono presenti accessori come il caricabatterie microUSB, con presa a due poli, adattatore per spine UK, due tasselli e due viti per fissarla alla parete, un codice QR da scansionare dopo aver scaricato l’app gratuita mydlink Lite, il libretto della garanzia e il manuale utente.
Specifiche tecniche e funzionalità D-Link DSC-2530L
D-Link DCS-2530L ha dimensioni pari a 11 cm di altezza e 6 cm di altezza, mentre il peso complessivo è di 105 grammi. Rispetto a molte altre telecamere di sicurezza disponibili in commercio, le dimensioni della DCS-2530L permettono di nasconderla facilmente all’interno della libreria o in un qualsiasi altro angolo della casa.
In termini di specifiche tecniche, questa telecamera è dotata di un sensore che permette di registrare ed effettuare video live streaming in Full HD, con risoluzione pari a 1920×1080 pixel. Il punto di forza di questa soluzione è la tecnologia Wide Eye che offre la possibilità di ottenere un video a 180 gradi, capace di raggiungere ogni punto della stanza. Una caratteristica interessante, a patto di aver trovato il punto giusto della casa. Inoltre, non mancano il supporto alla connessione WiFi 802.11 a/b/g/n, un microfono integrato e integrazione completa con la piattaforma mydlink.
Le principali funzionalità di questa videocamera di sicurezza sono la possibilità di registrare video di giorno e di notte, realizzare il classico live streaming e ricevere notifiche push o email con foto e filmati ogni volta che viene rilevato un movimento o un rumore. Non solo, grazie ai LED a infrarossi integrati è possibile ottenere un livello di visibilità fino a 5 metri.
Performance D-Link DSC-2530L
Ma come si comporta la telecamera di sicurezza DCS-2530L di D-Link? Durante tutta l’esperienza di test, abbiamo apprezzato la qualità del video e il suo essere discreta in qualsiasi contesto. La costruzione in plastica nera risulta essere leggera, minimale e resistente. L’ingresso per l’alimentazione è microUSB, anche se ciò non permette l’utilizzo con dispositivi di terze parti come Power Bank o caricatori esterni USB-microUSB.
In termini di performance, la telecamera offre una qualità video molto buona di giorno, mentre di notte risulta discreta. Per quanto riguarda la distorsione, abbiamo constatato come quest’ultima non vada a distorcere eccessivamente le immagini. Inoltre, tutti i sensori non hanno dato alcun problema e la configurazione tramite l’app mydlink lite, per Android e iOS, è risultata immediata.
Tuttavia, per registrare video, nei formati H.264 o M-JPEG, è necessario utilizzare una memoria microSD non in dotazione. A nostro avviso, è molto utile la funzione che permette di spegnere il LED frontale durante l’utilizzo, mentre la piattaforma Cloud D-Link è la ciliegina sulla torta, poiché con essa è possibile monitorare la propria casa da qualsiasi parte del mondo.
Conclusioni
In questa recensione abbiamo scoperto e analizzato le funzionalità della D-Link DCS-2530L, una videocamera di sorveglianza con un ottimo grandangolo e molte funzionalità. Considerato il prezzo complessivo, questa telecamera rappresenta un accessorio indispensabile per coloro che desiderano controllare la propria casa, anche da remoto, in modo semplice e rapido.
Ti ricordiamo, infine, che fino al 4 agosto 2017 puoi acquistare su Amazon la nuova D-Link DSC-2530L ad un prezzo molto interessante, ovvero il 15% rispetto al prezzo di listino. L’offerta in questione è valida solo per i clienti Prime.
D-Link DCS-2530L Videocamera di Sorveglianza Full HD, Wireless AC, Visione Panoramica 180 Gradi, Slot per MicroSD, Nero/Antracite
219,99 €, 153,53 € su Amazon
- TEMI
Article source: http://www.tecnocino.it/2017/07/articolo/d-link-dcs-2530l-recensione-telecamera-di-sorveglianza-per-la-casa/94775/
WhatsApp ha un miliardo di utenti al giorno
WhatsApp ha un miliardo di utenti attivi al giorno. Numeri davvero enormi, anche se effettivamente non stupiscono particolarmente vista la dimensione che ha ormai raggiunto il fenomeno WhatsApp. Ad annunciare questo importante traguardo Mark Zuckerberg, il fondatore di Facebook, lo stesso che circa quattro anni fa ha visto lungo e creduto nel potenziale di WhatsApp andandolo ad acquistare per una cifra record: 19 miliardi di dollari.
WhatsApp da record: Mark Zuckerberg festeggia
“Congratulazioni al team che lavora a WhatsApp che connette un miliardo di persone ogni giorno nel mondo - ha scritto Zuckerberg in un post su Facebook – Solo un anno fa abbiamo annunciato che un miliardo di persone nel mondo usano Whatsapp ogni mese. Oggi siamo entusiasti e fieri nel dire che un miliardo di persone ogni giorno usano Whatsapp per rimanere in contatto con la loro famiglia e i loro amici”.
Non solo il numero di utenti attivi ogni giorno, ma sono state pubblicate anche le cifre relative a quello che gli utenti attivi fanno: 55 miliardi di messaggi inviati al giorno, 4.5 miliardi di foto condivise al giorno e 1 miliardo di video al giorno. Numeri che fanno davvero impressione, soprattutto se si considera il trend di crescita: l’anno scorso, come sottolineato da Zuckerberg, gli utenti attivi giornalieri erano di un miliardo al mese.
Va da sé che al crescere dell’utilizzo crescono anche gli introiti: Facebook (proprietaria di WhatsApp) ha fatto sapere che, nel secondo trimestre dell’anno, sono entrati nelle sue casse 3.9 miliardi di dollari, pari ad un +7,9% rispetto ai 2.2 miliardi dello stesso periodo del 2016. Numeri in gran parte sospinti dalle pubblicità, con una crescita del 47% pari a 9.1 miliardi di dollari.
- TEMI
Article source: http://www.tecnocino.it/2017/07/articolo/whatsapp-ha-un-miliardo-di-utenti-al-giorno/94759/
Getting NASA astronauts safely out of Orion
NASA's Orion team, the Ground Systems Development and Operations group, and the US Coast Guard, Navy and Air Force recently ran Orion crew egress testing on the waters off of Galveston, Texas. The aim was to get the astronauts out of the capsule and into a raft without assistance from recovery personnel in under three minutes. The ocean tests follow extensive recovery procedures practiced in the 6.2 million gallon Neutral Buoyancy Lab at NASA's Johnson Space Center in Houston.
With the tremendous speeds required to power it to Mars, Orion will be subject to more stresses than any capsule before. For instance, NASA flew Orion on top of a Delta IV Heavy rocket in late 2014, where it went beyond the Van Allen belt to an orbit of 3,600 miles. While the heat shields stood up during the test mission, the agency realized it had to redesign them for the greater SLS speeds during the return trip from Mars.
NASA and its partners are working on multiple ways to get astronauts out of Orion. Normally, crews would be on the scene within minutes to assist. However, if the capsule goes off course and crews can't get there quickly, or the weather is rougher than expected and water starts to seep in, astronauts must be able to get out and into a life raft on their own, as quickly as possible. The capsule is equipped with emergency supplies like water, tools, and signaling mirrors, and can sustain a crew for up to 24 hours.
To make things even more realistic during recent tests, astronauts and testers wore the all-new "pumpkin" Orion Crew Survival System spacesuits, which will first see action in 2023.
The Orion capsule is destined for big things -- as part of the SLS, it will hopefully one day take astronauts to Mars. It's built with all new technology, including "advances in propulsion, communications, life support, structural design, navigation and power," NASA says. It also comes with its own crew and service modules, a spacecraft adapter and launch abort system that can save crew in the event of an accident.
Article source: https://www.engadget.com/2017/07/31/the-big-picture-orion-astronaut-egress/
Share your ‘Minecraft’ creations in 3D
Minecraft is all about creating 3D worlds, but sharing them outside of the game has always been a 2D experience -- you're sharing screenshots and videos like with any other game. Microsoft wants to do something better. It's releasing a beta version of its Better Together Update that, in addition to cross-platform play (more on that later), lets you export your creations in 3D. If you have Windows 10, you can use Paint 3D and Remix3D.com to showcase your work from every angle.
Article source: https://www.engadget.com/2017/07/31/minecraft-3d-sharing-and-better-together-beta/
Discovery acquires HGTV parent company in $14.6 billion TV deal
With the acquisition, Discovery will not only expand its channel portfolio, it will also gain a large portion of the US female audiences that Scripps channels currently attract. The combined company will claim 20 percent of primetime female viewership. Discovery, home to TLC, Animal Planet and Discovery Channel outbid Viacom for the purchase of Scripps, which includes HGTV, Food Network and Travel Channel among its channel offerings. The deal will save the companies around $350 million in costs and will give Discovery more leverage when negotiating contracts with distributors. It will also help Discovery's position if it decides to offer a skinny bundle of its programming in the future, which is important as viewers continue to move towards streaming and on-demand viewing over scheduled broadcasts.
"We believe that by coming together with Scripps, we will create a stronger, more flexible and more dynamic media company with a global content engine that can be fully optimized and monetized across our combined networks, products and services in every country around the world," said Discovery Communications CEO David Zaslav in a statement.
Discovery is paying 70 percent cash and 30 percent stock for the deal, which is expected to close in early 2018.
Article source: https://www.engadget.com/2017/07/31/discovery-acquires-hgtv-parent-company-in-14-6-billion-tv-deal/
Technology is failing to create transparent supply chains
It's not even clear that technology itself matters. Simple tools with actionable plans could be more effective than fancy, expensive ones. For example, one of the most successful tools is the self-described tech-agnostic Laborlink, a product of Good World Solutions, which supplies workers around the world with a secure, anonymous method of providing information about working conditions in their factories. It addresses one of the key weaknesses of the system that was implemented after the initial wave of revelations about working conditions in the 1990s, in which auditors enter factories at regular intervals and conduct checklist walk-through examinations.
"Auditing just does not have that many data points," said Beth Holzman, Director of Engagement and Operations at Laborlink. "It's specifically focused on a [narrow] compliance checklist to understand what is happening in a factory and doesn't really get into any wider analysis, which can reflect more the reality on the factory floor."
Auditing is haphazard and unreliable, with well-documented cases of fake reports. Moreover, workers' voices are only tangentially included, with Holzman estimating most audits only include statements from 10 to 20 workers maximum. As factories and plantations can have upward of 1,000 workers, this can be woefully inadequate.
Laborlink thrives partly because it does not rely on the latest smartphones or high-tech, remote-sensing technology. It utilizes whatever technology people already have. In Cambodia or India, this can be simple feature phones with SMS capability, whereas in China, the ubiquitous app WeChat is commonly used.
"We really are trying to ensure that, in the use of technology, we're putting workers at the heart of this process."
"We really are trying to ensure that, in the use of technology, we're putting workers at the heart of this process," said Holzman. "They have the ability to provide data and can use tech to better their own engagement."
This approach has been successful in creating knowledge about what's taking place in factories and giving companies that care an opportunity to address those concerns.
"We've reached a million workers and gathered 3.5 million data points," said Holzman. "That information can be shared with factory managers to say, 'How would you actually work to improve supply chain practices?'"
Other low-tech actors making a difference are NGOs. It is because of them that we have supply-chain accountability legislation, and it's often them, or their partners on the ground, who are spreading the word about unsafe working conditions or illegal deforestation.
"Improvements in technology at the local level have been instrumental in communities' ability to participate in the protection of their forests," said Emma Lierley, Forest Communications Manager with Rainforest Action Network. "And improvements in this area could be of great benefit."
But RAN does not expect technology itself to be the solution. It has been working on supply-chain issues since its inception, and it focuses on both environmental degradation and human rights violations in tropical-forest regions. To RAN, the idea that multinational corporations lack knowledge about what's really happening in their supply chains when it can find out and publish verifiable reports is incredulous.
"Time and time again we have seen companies use new tools and technology to further obfuscate the issue rather than to truly take responsibility for the conflicts in their supply chain," said Lierley. For example, shipping data on who is buying and selling palm oil could illuminate how supply chains connect to labor violations widely documented in Southeast Asia, but it is prohibitively expensive and often inaccessible to third parties like NGOs or journalists. Similarly, access to mapping data about land ownership could allow NGOs to connect illegal deforestation and fire to global companies, but the data remains under lock in Indonesian government and corporate databases.
"The lack of transparency in palm oil supply chains comes down to a lack of willpower, not a lack of tools," said Lierley.
This can be demonstrated by the companies that have made progress. Years ago Nike was the poster child for labor violations in its subcontractors' factories, but after years of hard work in collaboration with NGOs and academia, it has become a model in the shoe industry, recently releasing a map of all of its factories. Similarly, Intel, once complicit along with most of the technology industry as likely using conflict minerals, has, after doing a detailed public analysis with the NGO Resolve, officially declared its supply chain as conflict free.
Neither used fancy technology as an end-all solution, and both spent years figuring out an actionable plan. The problem itself was clear from the start.
"If you want to know what is going on in your supply chain, you don't need tech to find that," said Moote. "You need technology to solve the problem."
Article source: https://www.engadget.com/2017/07/31/technology-supply-chain-transparency/
Alphabet is using salt and antifreeze to store power from wind farms
Per Bloomberg:
"The system takes in energy in the form of electricity and turns it into separate streams of hot and cold air. The hot air heats up the salt, while the cold air cools the antifreeze, a bit like a refrigerator. The jet engine part: Flip a switch and the process reverses. Hot and cold air rush toward each other, creating powerful gusts that spin a turbine and spit out electricity when the grid needs it."
Salt can apparently store energy for days, so this would give energy companies that are dumping off electricity generated from wind farms and solar panels a place to hold it. According to Bloomberg's sources, California had to dump off over 300,000 megawatts of electricity (which could've powered "tens of thousands" of homes) already this year. That's a lot of wasted juice.
This isn't a full-on X experiment like Project Loon, however. It isn't fully funded yet, but Alphabet has built a proof of concept in a Silicon Valley warehouse and is working to find business partners for a commercial prototype that can connect to the electrical grid.
From here it's a lot of testing build materials that can be sourced cheaply, and making sure the thermodynamics are good to go.
Salt-based storage could be cheaper than things like lithium-ion batteries by quite a bit, but from the sounds of it, this is still a ways off from being ready for market. Largely because current gas and oil prices are low and investors don't see short-term pay-offs with alternative fuels. Good thing Alphabet isn't exactly hurting for money, then.
Article source: https://www.engadget.com/2017/07/31/google-alphabet-salt-antifreeze-power-storage/
The best VR headsets and accessories for dorms
We'll be the first to admit that a virtual-reality session isn't terribly conducive to bonding with new friends in the dorm. But, hey, a few of us here at Engadget are introverts, so you don't need to explain to us the value of strapping on a headset and momentarily blocking out the stress of classes and meeting new people. Included in our back-to-school guide are many of the usual suspects, like the Oculus Rift, PlayStation VR and Daydream View. We also recommend the optional Rift and Gear VR controllers, as well as games like Rock Band VR and Farpoint. Enjoy your escape from the real world, but remember to take a social break from time to time.
Article source: https://www.engadget.com/2017/07/31/back-to-school-2017-vr/
Amazon’s new show only exists to sell you more stuff
The company has been playing around with different ways to link social media influencers with product sales. Earlier this year, Amazon launched an "influencer program" that allowed popular social media personalities to set up a page on its site with lists of Amazon products they recommend for their followers. In March, the company launched its first live TV show, Style Code Live, which was its take on a QVC-like shopping channel. However, it was cancelled shortly thereafter in May.
The first two episodes of Overhaul will feature YouTube baking star Rosanna Pansino and beauty vlogger Teni Panosian. The six-episode series is set to premiere in September.
Article source: https://www.engadget.com/2017/07/31/amazons-show-exists-sell-you-stuff/
Scientists want to create animal feed out of light and electricity
The aim of this is to eventually develop this protein into a source of food for animals. Not only will it allow for on-demand food production for livestock, but it also has the potential to free up swaths of land that are currently used to store fodder. This protein-based feed could help ease the onerous environmental impact of raising and maintaining livestock.
In the future, this protein could be used for human consumption as well. "In the long term, protein created with electricity is meant to be used in cooking and products as it is," says Juha-Pekka Pitkänen, one of the principal scientists on the project." The mixture is very nutritious, with more than 50 per cent protein and 25 percent carbohydrates. The rest is fats and nucleic acids. The consistency of the final product can be modified by changing the organisms used in the production."
Currently, it takes about two weeks to manufacture just one gram (.03 ounce) of the protein. It's also 10 times more efficient than photosynthesis. While that might seem impressive, both efficiency and speed need to increase drastically before this can be considered for commercial use; the next step is to embark on a pilot program to test the product. "The idea is to develop the concept into a mass product, with a price that drops as the technology becomes more common," explains Jero Ahola, one of the scientists on the project.
Article source: https://www.engadget.com/2017/07/31/create-protein-light-electricity/