You might say the week is never really done in consumer technology news. Your workweek, however, hopefully draws to a close at some point. This is the Weekly Roundup on Engadget, a quick peek back at the top headlines for the past seven days -- all handpicked by the editors here at the site. Click on through the break, and enjoy.

When Samsung unveiled its first 4K Ultra HD TV at CES this year, it said other sizes would follow, both larger and smaller than the initial 85-inch version. Now it's apparently ready to fulfill part of that promise, announcing in Korea that 65- and 55-inch models will launch next month. Of course our next question is how these smaller models will compare to the $39,999 MSRP 85S9 UHD TV in price. Hopefully they'll follow the path blazed by Sony, which recently introduced models at that size with pricing well below the $10,000 benchmark, although we expect Seiki's 50-incher will still hold the crown for value pricing. The press release mentions they will feature Samsung's upgradeable Smart TV platform and the "micro dimming ultimate" LED lighting of their larger cousin, but the odd "Timeless Gallery" frame / stand (pictured above on the 85-incher) was not listed.

Each week Ross Rubin contributes Switched On, a column about consumer technology.

The announcement of the Acer Aspire R7 was the best example of the company's assertion that it was moving from computers designed with touch to computers designed for touch. But if having a fancy, even unprecedented, hinge is what defines a touch-optimized notebook, Acer is a bit late to the party.

Joshua Pearce, PhD, is a researcher at Michigan Tech who rearches open source and low-impact solutions to engineering problems. He is also the founder of the Printers For Peace contest, an effort to bring together clever 3D-printed ideas that have loftier aims. You can win one of two 3D printers if you submit a winning project.

We asked Pearce a few questions about his goals for the project and about the future of 3D printing.

John Biggs: Why Printers For Peace?

Joshua Pearce: I think it is clear that low-cost open-source 3D printing has enormous potential to do real good for the world – particularly for the poor as it radically reduces the cost of high-value products like scientific tools and consumer goods. This threatens a lot of entrenched interests because the average Joe can fabricate extremely complex products at home for pennies, which is disruptive to say the least. I have noticed a clear bias in 3D printing news coverage – any advances on the low-end of the spectrum are generally ignored or vilified. The media frenzy about 3D printed guns is actually having terrifying consequences – and I don’t mean the guns. A California senator has already proposed registration, background checks, and licensing for 3D printers!

Nintendo seems to have a knack for repeat performances. Nintendo DS? Quickly supplanted by the DS Lite -- and the DSi didn't last too long either before it was succeeded by the DSi XL. Even the 3DS saw a revision, when it was supersized last summer. These redesigns typically don't change more than the device's size, but when the 3DS XL was announced, some gamers were left wanting. Didn't the original 3DS get an accessory specifically to address the lack of a second analog pad? Why didn't Nintendo take the opportunity to add dual-analog controls? Well, if that happened, Nintendo couldn't release an encore Circle Pad Pro accessory, could it? Let's take a look at the 3DS XL Circle Pad Pro and see what's changed.

Info about the Iconia W3 Windows 8 tablet has already slipped out a few times, and now this 8.1-incher is live on Acer's Finnish website. While there's no mention of price or availability, the specifications list matches the previous leaks. You're looking at Windows 8 Pro running atop an Intel Atom Z2760 with integrated graphics for up to eight hours, aided by 2GB of RAM, a maximum 64GB of storage, 802.11 b/g/n WiFi and Bluetooth 4.0. Port-lovers will be pleased to find Micro HDMI and micro-USB hookups onboard, as well as a microSD slot. Microsoft Word comes pre-installed, but there's no concrete info about the optional full-size keyboard dock -- other than it existing, of course. It'll likely be closer to June when we'll be staring at this 1.1-pounder's 1280 x 768 touchscreen and front-facing webcam in the flesh, so you'll have to hit up Acer directly at the source link for now.

That cat's out of the bag a day early, it seems. Yahoo's board has approved a $1.1 billion cash deal to purchase the blogging site Tumblr, according to The Wall Street Journal. We were expecting Yahoo to announce the acquisition during tomorrow's NYC media event -- CEO Marissa Mayer may instead use the last-minute gathering to detail the company's plans for integrating the popular platform. It's unclear how Yahoo intends to utilize its latest procurement, but with a 10-figure price tag now public, we can only imagine that Tumblr will be put to good use. We'll be covering tomorrow afternoon's event live, so stay tuned for more details from New York City.

A new Lumia phone from Nokia, this year's Google I/O and BlackBerry Live -- yep, it was a pretty hectic week for us, but also a good seven days for tech news. Even if Google didn't have any truly new hardware for us, it's started up its own on-demand music service, gave us more details on Google Glass, redesigned its Maps and, well, it was a very long keynote. Join us after the break for a numerical breakdown of that and the rest of the week's big news.

Per-month pricing for Google Music All Access: $9.99 Per-month pricing for Spotify Premium: $9.99 Time spent liveblogging the Google I/O 2013 keynote: 3 hours 43 minutes Length of Peter Jackson's The Hobbit: An Unexpected Journey: 2 hours 49 minutes Battery remaining on our Google Glass unit by the end of the keynote: 17 percent Number of times Google CEO Larry Page said the word "sad" during his keynote appearance: 9 Price of a 16GB "stock Android" Samsung Galaxy S 4: $649 Price of last year's LG Nexus 4 (16GB): $349 YouTube's monthly subscription fee for new pilot channels: $0.99 Current Sesame Street channel subscribers on YouTube: 600,464 One, two, three, four, five, six, seven, eight, nine, 10, 11: 12

Amount Google earned from ads on PSY's "Gangnam Style" video: $8 million Number of Android device activations to date: 900 million Apps installed from Google Play: 48 billion Apps downloaded from Apple's App Store: 50 billion Estimated number of Nokia phones (feature and smart) sold last year: 336 million Price of the Nokia Lumia 925: 469 euros / $605 Price of the Nokia Asha 501: $99 Screen size (in inches) of the Asha 501: 3 Screen size (in inches) of the new QWERTY BlackBerry Q5: 3.1 BlackBerry's smartphone market share, according to IDC: 2.9 percent Tablets sold by ASUS in Q1 2013: 3 million Tablets sold by BlackBerry in Q1 2013: 370,000 Years left for the tablet market, according to BlackBerry CEO Thorsten Heins: 5

Each week our friends at Inhabitat recap the week's most interesting green developments and clean tech news for us -- it's the Week in Green.

Eyes in the design world turned to New York City this week as New York Design Week officially launched. We hit the floors of International Contemporary Furniture Fair today to bring you the best new green designs from one of the largest contemporary design shows in the US -- including Blackbody's gorgeous OLED light trees and Tat Chao's ethereal LED lamps made from recycled wine glasses. We also checked out the locally focused BKLYN Designs show, where design duo Bower unveiled an awesome magnetic LED lamp, made from discarded pieces of scrap wood. Lighting designer Adam Frank unveiled three inspiring new designs at BKLYN Designs: the LED Lumen lamp, which casts tree-shaped shadows from a little candle holder; the incredible Reveal Projector, which projects an image of outdoor foliage and sky through a window on a blank wall (good for tiny NYC apartment dwellers); and the 3D Hologram-ish LUCID Mirror, which displays a 3D image of illuminated clouds over your head!

There's a new kid on the Arduino block, and it's called the Arduino Robot. Launched yesterday at Maker Faire Bay Area, it's the company's first product that extends beyond single microcontroller boards. The Roomba-like design, which we first saw in November 2011, is the result of a collaboration with Complubot. It consists of two circular boards, each equipped with Atmel's ubiquitous ATmega32u4 and connected via ribbon cable.

The bottom board is home to four AA batteries (NiMH), a pair of motors and wheels, a power connector and switch plus some infrared sensors. By default it's programmed to drive the motors and manage power. The top board faetures a color LCD, a microSD card slot, an EEPROM, a speaker, a compass, a knob plus some buttons and LEDs. It's programmed to control the display and handle I/O. Everything fits inside a space that's about 10cm high and 19cm in diameter.