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In an unusual turn of events, Lockheed Martin has released technical “payload accommodation information” for three of their satellite busses. In layperson’s terms, if you wanted to build a satellite and weren’t sure what guidelines to follow these documents may help you learn if Lockheed Martin has a platform to help you build it.
An opportunity to check out once-confidential information about satellites sounds like a perfect excuse to dig through some juicy documentation, though unfortunately this may not be the bonanza of technical tidbits the Hackaday reader is looking for. Past the slick diagrams of typical satellites in rocket fairings, the three documents in question primarily provide broad guidance. There are notes about maximum power ratings, mass and volume guidelines, available orbits, and the like. Communication bus options are varied; there aren’t 1000BASE-T Ethernet drops but multiply redundant MIL-STD-1553B might come standard, plus telemetry options for analog, serial, and other data sources up to 100 Mbps. Somewhat more usual (compared to your average PIC32 datasheet) are specifications for radiation shielding and it’s effectiveness.
In the press release EVP [Rick Ambrose] says “we’re sharing details about the kinds of payloads we can fly…” and that’s exactly what these documents give us. Physical ballpark and general guidelines about what general types of thing Lockheed has capability to build launch. Hopefully the spirit of openness will lead to the hoped-for increase in space utilization.
If you take Lockheed up on their offer of satellite development, don’t forget to drop us a tip!
[Via the Washington Post]
Tom Warren, writing for The Verge: If you blink during Apple’s latest iPhone ad, you might miss a weird little animation bug. It’s right at the end of a slickly produced commercial, where the text from an iMessage escapes the animated bubble it’s supposed to stay inside. It’s a minor issue and easy to brush off, but the fact it’s captured in such a high profile ad just further highlights Apple’s many bugs in iOS 11. 9to5Mac writer Benjamin Mayo spotted the bug in Apple’s latest ad, and he’s clearly surprised “that this was signed off for the commercial,” especially as he highlighted it months ago and has filed a bug report with Apple.
of this story at Slashdot.
A new update is rolling out to Amazon Echo devices that gives users the option to make Alexa respond with a short, beeping sound rather than her customary “OK.” Reddit users reported seeing the new feature this week. CNET reports: You access the Brief Mode in the Amazon Alexa app’s Settings Menu under “Alexa Voice Responses.” You can also ask your Alexa-enabled device to turn on the Brief Mode. Once the setting is enabled, you can ask Alexa to control devices to which she is connected and she will respond with beeps rather than “OK” to let you know that she received and completed the task. Don’t want to completely quiet Alexa down? Amazon also rolled out a “Follow-Up Mode” last week that’s designed to let you will let you talk to Alexa more naturally. That mode will let you make successive requests without needing to use Alexa’s wake word between each command.
of this story at Slashdot.
Hail underdogs! A No. 16 seed had never beat a No. 1 in the NCAA men’s basketball tournament, until the UMBC Retrievers bounded along. …read more
AI is the new hotness! It’s 1965 or 1985 all over again! We’re in the AI Rennisance Mk. 2, and Google, in an attempt to showcase how AI can allow creators to be more… creative has released a synthesizer built around neural networks.
The NSynth Super is an experimental physical interface from Magenta, a research group within the Big G that explores how machine learning tools can create art and music in new ways. The NSynth Super does this by mashing together a Kaoss Pad, samples that sound like General MIDI patches, and a neural network.
Here’s how the NSynth works: The NSynth hardware accepts MIDI signals from a keyboard, DAW, or whatever. These MIDI commands are fed into an openFrameworks app that uses pre-compiled (with Machine Learning!) samples from various instruments. This openFrameworks app combines and mixes these samples in relation to whatever the user inputs via the NSynth controller. If you’ve ever wanted to hear what the combination of a snare drum and a bassoon sounds like, this does it. Basically, you’re looking at a Kaoss pad controlling rompler that takes four samples and combines them, with the power of Neural Networks. The project comes with a set of pre-compiled and neural networked samples, but you can use this interface to mix your own samples, provided you have a beefy computer with an expensive GPU.
Not to undermine the work that went into this project, but thousands of synth heads will be disappointed by this project. The creation of new audio samples requires training with a GPU; the hardest and most computationally expensive part of neural networks is the training, not the performance. Without a nice graphics card, you’re limited to whatever samples Google has provided here.
Since this is Open Source, all the files are available, and it’s a project that uses a Raspberry Pi with a laser-cut enclosure, there is a huge demand for this machine learning Kaoss pad. The good news is that there’s a group buy on Hackaday.io, and there’s already a seller on Tindie should you want a bare PCB. You can, of course, roll your own, and the Digikey cart for all the SMD parts comes to about $40 USD. This doesn’t include the OLED ($2 from China), the Raspberry Pi, or the laser cut enclosure, but it’s a start. Of course, for those of you who haven’t passed the 0805 SMD solder test, it looks like a few people will be selling assembled versions (less Pi) for $50-$60.
Is it cool? Yes, but a basement-bound producer that wants to add this to a track will quickly learn that training machine learning algorithms cost far more than playing with machine algorithms. The hardware is neat, but brace yourself for disappointment. Just like AI suffered in the late 60s and the late 80s. We’re in the AI Renaissance Mk. 2, after all.
The world’s largest social network said it’s banning a data analytics firm, called Cambridge Analytica, after reports it lied about how it treated user data. …read more
An anonymous reader quotes a report from The Verge: Facebook said late Friday that it had suspended Strategic Communication Laboratories (SCL), along with its political data analytics firm, Cambridge Analytica, for violating its policies around data collection and retention. The companies, which ran data operations for Donald Trump’s 2016 presidential election campaign, are widely credited with helping Trump more effectively target voters on Facebook than his rival, Hillary Clinton. While the exact nature of their role remains somewhat mysterious, Facebook’s disclosure suggests that the company improperly obtained user data that could have given it an unfair advantage in reaching voters. Facebook said it cannot determine whether or how the data in question could have been used in conjunction with election ad campaigns.
In a blog post, Facebook deputy general counsel Paul Grewal laid out how SCL came into possession of the user data. In 2015, Aleksandr Kogan, a psychology professor at the University of Cambridge, created an app named “thisisyourdigitallife” that promised to predict aspects of users’ personalities. About 270,000 people downloaded it and logged in through Facebook, giving Kogan access to information about their city of residence, Facebook content they had liked, and information about their friends. Kogan passed the data to SCL and a man named Christopher Wylie from a data harvesting firm known as Eunoia Technologies, in violation of Facebook rules that prevent app developers from giving away or selling users’ personal information. Facebook learned of the violation that year and removed his app from Facebook. It also asked Kogan and his associates to certify that they had destroyed the improperly collected data. Everyone said that they did. The suspension is not permanent, a Facebook spokesman said. But the suspended users would need to take unspecified steps to certify that they would comply with Facebook’s terms of service.
of this story at Slashdot.
Antennas are a tricky thing, most of them have a fairly narrow range of frequencies where they work well. But there are a few designs that can be very broadband, such as the discone antenna. If you haven’t seen one before, the antenna looks like — well — a disk and a cone. There are lots of ways to make one, but [mkarliner] used a 3D printer and some aluminum tape to create one and was nice enough to share the plans with the Internet.
As built, the antenna works from 400 MHz and up, so it can cover some ham bands and ADS-B frequencies. The plastic parts act as an anchor and allow for coax routing. In addition, the printed parts can hold a one-inch mast for mounting.
Generally, a discone will have a frequency range ratio of at least 10:1. That means if the lower limit is 400 MHz, you can expect the antenna to work well up to around 4 GHz. The antenna dates back to 1945 when [Armig G. Kandoian] received a patent on the design. If you want to learn more about the theory behind this antenna, you might enjoy the video, below.
You often see high-frequency discones made of solid metal, or — in this case — tape. However, at lower frequencies where the antenna becomes large, it is more common to see the surfaces approximated by wires which reduces cost, weight, and wind loading.
The biggest lobby groups representing broadband providers will help the FCC defend the repeal of net neutrality rules in court. Ars Technica reports: Yesterday, three trade groups that collectively represent every major home Internet and mobile broadband provider in the U.S. filed motions to intervene in the case on behalf of the FCC. The motions for leave to intervene were filed by NCTA–The Internet & Television Association, CTIA–The Wireless Association, and USTelecom–The Broadband Association. NCTA represents cable companies such as Comcast, Charter, Cox, and Altice. CTIA represents the biggest mobile carriers, such as AT&T, Verizon Wireless, T-Mobile, and Sprint. USTelecom represents wireline telcos with copper and fiber networks, such as AT&T and Verizon. All three groups also represent a range of smaller ISPs. As intervenors in the case, the groups will file briefs in support of the net neutrality repeal order and may play a role in oral arguments. NCTA’s motion noted that its members would once again be subject to “common-carriage regulation under Title II of the Communications Act” if the FCC were to lose the case. CTIA said that its members “would be adversely affected if the [net neutrality] Order were set aside and the prior Title II Order classification and rules were reinstated.”
of this story at Slashdot.
Come for the nose job, stay for the… denials of any wrongdoing
A Los Angeles plastic surgeon has been accused of watching porn videos on a screen while performing surgery.…