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An Introduction To The BeagleBone PRU

BBB While the BeagleBone is usually compared to the Raspberry Pi, there are a few features that make the ‘Bone a vastly more capable single board computer. There is a small difference in the capabilities of the processor, but the real power of the BeagleBone comes from the PRUs available: two small cores that give the BeagleBone the hardware equivalent of bitbanging pins. [Texane] has put up two great tutorials for using the PRU in the BeagleBone that should be required reading for every BeagleBone owner.

The first tutorial goes over the capabilities of the PRUs in the BeagleBone and setting up the software environment to develop your own hardware interfaces with the PRU. While writing code for the PRU has usually involved the Beagleboard packages, TI has recently released a version of Code Composer Studio that gives the option to compile C code for the PRU.

[Texane] used this C compiler to rehash the earlier, assembly only PRU program, making development significantly easier. There’s still a bit of inline assembly, and the inline assembly support isn’t as advanced as in GCC, but it’s still much easier than the assembly only variant.

While [Texane] is using the PRU in his BeagleBone to develop something at a synchrotron facility, three are a few things where really fast hardware bitbanging comes in handy: it can be used to make a video card for a vintage mac, or any sort of VGA video card, really. Very cool stuff, especially now that you can write something in C.


Filed under: linux hacks

Hackaday Links: June 22, 2014

hackaday-links-chain

Solar Freakin’ Roadways! There’s been a lot of talk about how solar freakin’ roadways are an ill-conceived idea, and now [Dave Jones] is weighing in on the subject. Highlights include a quarter of the solar power generated being used to light the LEDs that form the lane markers, something that could easily be accomplished with paint. Oh, the solar freakin’ roadway campaign is over. Just over $2.2 million, if you’re wondering.

The Game Boy Micro is the best way to play GBA games, but finding one for a reasonable price just isn’t going to happen. [John Sparks] is making his own Macro Micros by casemodding a DS Lite.On the subject of Game Boy mods, [koji-Kendo] is improving the common frontlight Game Boy Color mod with optically clear UV curing glue. Without glue on the left, with glue on the right.

Need to label a panel with the function of all your switches and dials? Yeah, you could drop the panel into an engraver, till the engraved letters with enamel, or do some electroetching. You can also buy a pack or rub-on letters, available in any Michaels, Hobby Lobby, or the like.

MSI Afterburner is a utility that allows you to play with settings and monitor performance on MSI graphics cards. [Stephen] made a little device for MSI Afterburner that displays the current FPS and GPU load on an external LCD. Handy, seeing as how FPS and GPU load is the one thing you’ll want to know when you’re gaming fullscreen.

Realtime cloudmaps of the Earth. Using reasonably recent images take from five geostationary satellites, you can stitch together a real-time cloud map of the entire Earth. Here’s the software to do it. Now all you need is a projector and pair of frosted acrylic hemispheres, and you have a real-time globe.

Say you have a Kickstarter in the works, and you’re trying to figure out all the ways to get some buzz from the Internet public.. Here’s how you get it to the front page of hackaday.io using a bit of Perl. “So far, this page has been updated 02578 times.”


Filed under: Hackaday links

Tanium, a powerful IT management tool, gets $90M from Andreessen


Andreessen Horowitz is betting big on Tanium, a company that lets IT professionals manage hundreds of thousands of devices in real-time.

The venture capital firm is investing $90 million in Tanium, co-founder and general partner Marc Andreessen announced on Twitter tonight. The investment values the company at $900 million, sources (which we’ll pretend aren’t connected to any of the firms involved) tell the Wall Street Journal.

3/Tanium –> people responsible for large networks of computers & software, what Google –> people on the Internet. Don't say that lightly.—
Marc Andreessen (@pmarca) June 22, 2014

You’ve likely never heard of Tanium, but its technology sounds like an IT manager’s dream. Founded by David Hindawi and his son Orion, Tanium gives IT folks unprecedented awareness of all the devices connected to their network, which is helpful for both security and general management.

You can also type in natural language queries in Tanium’s console — for example, you can ask for all computers running a specific process — and get results in a few seconds, according to Andreessen partner (and former Microsoft executive) Steven Sinofsky, who’s also joining Tanium’s board.

“In practice, the Tanium team accomplished nothing short of a complete rethinking of how IT pros manage, secure, and maintain the endpoints in their network — every node on the network can now be interrogated, managed, updated, and secured, instantly from a browser,” Sinofsky wrote in a blog post today.

While there are plenty of IT management tools already on the market (including BigFix, which the Orion’s previously founded and eventually sold to IBM in 2010), Tanium sounds like it offers more breadth and speed than the competition. And as someone who used to work in IT, the idea of having instant access to hundreds of thousands of devices on my network sounds unimaginable.

The investment is Tanium’s first from a VC firm since its founding in 2007, and it’s also Andreessen’s second-largest investment ever. The company says it will use the new funds toward continued product development and expansion.

“When we talk about Tanium we describe it as an entrepreneur "trifecta," Sinofsky wrote. “First, David and Orion are experienced and successful entrepreneurs. Second, Tanium is a product that builds on innovative and inventive technology that could only come about from a team with experience and depth of understanding the enterprise. And third, Tanium is already a successful and profitable company with dozens of customers in massive, mission-critical, and global deployments.”



Andreessen Horowitz is a $950 million venture capital firm that was launched on July 6, 2009. Marc Andreessen and Ben Horowitz are the general partners of the firm.... read more »








LaunchBar 6.0.1

Adds several new text transformation actions to the keyboard-based launcher. ($29 new, free update, 10.0 MB)

 

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One-Off Kapton Solder Masks

soldermask

With the proliferation of desktop routers, and a number of easy methods to create PCBs at home, there’s no reason anyone should ever have to buy a pre-made breakout board ever again. The traditional techniques only give you a copper layer, however, and if you want a somewhat more durable PCB, you’ll have figure out some way to create a solder mask on your homebrew PCBs. [Chris] figured Kapton tape would make a reasonable soldermask, and documented the process of creating one with a laser cutter over on the Projects site.

The solder mask itself is cut from a piece of Kapton tape, something that should be found in any reasonably well-stocked tinkerer’s toolbox. The software for [Chris]‘ laser cutter, a Universal Laser Systems model, already has a setting for mylar film that came in handy for the Kapton tape,

Of course, getting the correct shapes and dimensions for the laser to cut required a bit of fooling around in Eagle and Corel Draw. The area the laser should cut was taken from the tCream and tStop layers in Eagle with a 1 mil pullback from the edges of the pads. This was exported to an .EPS file, opened in Corel Draw, and turned into a line art drawing for the laser cutter.

The result is a fast and easy solder mask that should be very durable. While it’s probably not as durable as the UV curing paints used in real PCBs, Kapton will be more than sufficient for a few prototypes before spinning a real board.


Filed under: cnc hacks, laser hacks

Tic Tac Clock

tic-tac-clock

Here’s an excuse to each a bunch of Tic Tac candies: once the container is empty it makes a nice little enclosure for your next project. This particular offering introduces a point-to-point clock project that’s a ton of fun.

[Danny Chouinard] did a lot with very little. You can get the gist of the circuit just by looking at the photos above. it uses a 3×5 Charlieplexed LED display (this is given away by the fact that there’s only a few resistors on the board. A bit difficult to see, but between the resistors and the ATtiny84 there is a clock crystal, and on the back is a little piezo buzzer. The one thing that isn’t completely obvious is the power source. Two AAAA batteries, salvaged from a 9V battery, are able to keep the unit running at an estimated 2 years of moderate use.

The video after the break is worth a look though. It shows the various characters and information that can be flashed on the LED matrix. At first it’s hard to tell that the single user input button is being pressed by [Danny's] thumb.

If you don’t want to build a clock, there are still plenty of reasons to eat a whole container of these mints. You could replace them with a PIC programmer or a discreet camera.


Filed under: clock hacks

Wooden Band Saw Fears Its Wood-Cutting Brethren

DIY Wooden Bandsaw

What is cooler than building a band saw out of wood? Building two, of course! And that is exactly what [Pekka] did. The first was a small bench top model while the second was a much larger version with the saw blade strung between big 13-3/4 inch wheels. For those who are unfamiliar with band saws, they are tools that have a long thin blade that is routed around rotating wheels. The wheels are spread apart to make the blade taut. Unlike the reciprocating action of a jigsaw, saws-all or scroll saw, the band saw blade continually rotates in one direction. These blades are typically thin making it easy to cut irregular and curved shapes.

The frame of [Pekka's] larger machine is made from 35mm (~1-3/8″) plywood. This proved to be a sturdy frame material. The previously mentioned wheels were made by gluing pieces of oak together, mounting the assembly on a wood lathe and turning the outer diameter down to size. By using multiple piece of wood to construct the wheels allows the grain direction of each portion to be parallel with the blade. This method of construction ensures any expansion/contraction of the wood is uniform around the wheel. A strip of rubber around the blade’s outer diameter provides the friction required to prevent the blade from slipping.

[Pekka's] friend was nice enough to turn the flanged axle shafts on his metal lathe. These shafts support the wooded wheels and are mounted in pillow block bearings. The upper pillow blocks are mounted to a sliding support that allows adjusting the tension of the saw blade. [Pekka] was not going to be satisfied with a one-speed band saw so he grabbed a motor he had kicking around that originally came from a wood lathe and already had 4 different sized pulleys mounted on the shaft.

This is a great project that shows what can be done with a little desire and ingenuity.


Filed under: tool hacks

Renewable energy won’t cause electric utility ‘death spiral’: Study


Beware the idea of a “death spiral,” heralded by some as the inevitable result for electric utilities of mass adoption of renewable energy sources — particularly solar.

Under this scenario, advances in renewable energy will allow consumers to generate more of their own power. As more customers leave the network, the theory goes, companies will be forced to raise rates to cover fixed costs — like power-transmission infrastructure — forcing even more people away.

In other words, solar power will destroy electric utilities’ business model — as predicted last year in a bleak report from the Edison Electric Institute.

But now a new report by the American Council for an Energy-Efficient Economy suggests that greener energy sources won’t cause a death spiral.

In a “most extreme scenario,” researchers said national electricity sales would fall 10 percent by 2040, a decline of just 0.4 percent per year.

Those numbers, however, assume that all states achieve energy-efficiency levels so far reached by only a few, along with solar infrastructure that uses virtually all available roof space.

With more moderate adoption of renewable energy, electricity sales should actually grow by 0.04 percent over the same period.

That would essentially leave utility companies treading water, a challenge for those seeking to boost profits through continued growth.
If sales remain flat, the report’s authors recommend that utilities offer optional energy-related services to customers — including technical help and financing for larger customers installing and operating high-efficiency combined heated and power systems.

They also recommend that regulators adjust rates to allow companies to recover fixed costs more easily, incentivize increased energy efficiency, and modify the rules governing rates and services for added flexibility.

On the other hand, the report advises utility companies to curtail infrastructure expansion unless there’s a clear rise in demand for electricity foreseeable.

Whether utility companies will take this advice, or continue to fight home solar power as a threat to their business model, remains to be seen.

_______________________________________________

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This story originally appeared on Green Car Reports.








4 things you need to know about mobile ad attribution

GUEST POST

4 things you need to know about mobile ad attribution
Image Credit: Shutterstock

How can you leverage mobile to increase profitability for your company? Find out at MobileBeat, VentureBeat's 7th annual event on the future of mobile, on July 8-9 in San Francisco. Register now and save $200!

Attribution, the process of figuring out if people are actually seeing your ads, is a key driver to success in mobile advertising.

While web-based cookies allow marketers to track performance on online channels such as online advertising, email marketing, and search engine marketing (SEM), mobile has lagged behind.

Because mobile apps don't support cookies, tracking and attributing spend to revenue has proven difficult. However, the introduction of the Identifier for Advertisers (IDFA) has changed the landscape and provided a way to attribute the revenue generated by mobile.


We’ll be exploring the importance of mobile ad attribution at MobileBeat 2014 in San Francisco on July 8-9.

Grab your tickets now!


The widespread adoption of user-controllable identifiers for advertisers by Apple and Google offers the opportunity for better tracking in mobile apps.

Here's why:

  • Impressions and clicks are tracked to the mobile device, and a mobile device is more directly connected to a single user.
  • Apps can integrate a single tracking technology to handle advertising and conversions and to post conversion activity.
  • Integration of tracking into apps means better control and measurement of user interaction.
  • Mobile advertising systems offer insight into return on ad spend, average revenue per user and user lifetime value due to concise event tracking.

The upshot is that mobile apps have the power to track more events tied to a single user, and that means advertisers have a better picture of advertising performance.

How do you take advantage of the new mobile attribution landscape? Here are a few ways to start:

1.  Invest in mobile technology by developing apps and updating them regularly.

Without fail, marketers who optimize for this medium are winning over those who simply port their web experience to mobile. Brands on our platform see substantially higher repeat purchasing and cart values in their apps than they see on mobile web. Just converting a website to be mobile-optimized isn't a complete mobile strategy.

2.  Choose a tracking & analytics platform.

Many viable tracking solutions are now available for mobile applications. There's no reason to build your own custom analytics suite when there are several tracking and analytic vendors to choose from. These tools will help you integrate with marketing channels and then measure the performance of all your media spend.

3.  Leverage privacy-sensitive user IDs such as Apple IDFA and Google's advertising ID for tracking.

This will allow you to track lifetime orders back to devices while still keeping consumer privacy intact.

4.  Be open to sharing transactional data with your mobile marketing platform, if they encourage it.

Many marketing companies optimize to cost per click (CPC) or cost per install (CPI). Ultimately, you should care about more than just installs. Down funnel metrics such as engagement, retention and monetization complete the picture and demonstrate an ongoing return on investment. By integrating with mobile marketing platforms that optimize campaigns to metrics like these, you can generate more success from your marketing spend.

By actively engaging customers on mobile with an app-centric perspective, you'll be able to improve the mobile experience and refine your products for significantly higher consumer engagement. Top commerce and travel brands on our platform regularly see half their digital sales come from mobile. They can continue to invest and see even more growth because they can actually attribute those digital sales directly to mobile.

Adam Foroughi is the co-founder and CEO of AppLovin.


We want hands-on expert reports on common marketing automation systems. If you use marketing automation, share your story ... and set your own price for others to learn from it. (Here's an example.)


Our mobile marketing platform drives relevant ads to your audience, refines and improves their performance, and delivers measurable results that yield the highest return on your investment.... read more »








Why Amazon didn’t go cheap with the Fire Phone

Why Amazon didn't go cheap with the Fire Phone

Above: The Amazon Fire Phone.

Image Credit: Amazon

How can you leverage mobile to increase profitability for your company? Find out at MobileBeat, VentureBeat's 7th annual event on the future of mobile, on July 8-9 in San Francisco. Register now and save $200!

Amazon's Fire Phone innovates with its four-camera configuration. It innovates with its object-identifying Firefly feature. And it innovates with its Mayday feature that provides face-to-tracked-face assistance on the go.

But one way in which it doesn't innovate may be the way that most people were hoping it would: price. Available for $199 on a two-year AT&T contract or $649 unlocked, the Fire Phone is similar to other premium phones such as the iPhone 5S and Samsung Galaxy S5.

The Fire Phone's failure to disrupt has led many to question whether it is keeping the Amazon flame. Indeed, the cellular options available to Fire Phone buyers are less creative than the limited free data option Amazon offered with AT&T at the release of the Kindle Fire HD.


We’ll be exploring how you can grow your mobile business at MobileBeat 2014 in San Francisco on July 8-9.

Grab your tickets now!


When Amazon entered the tablet market with the $199 Kindle Fire, it set off a price war. Jeff Bezos noted that the company produces "premium products at a non-premium price." But while Amazon has shown some willingness to follow others down the ladder as tablet pricing has collapsed, offering the Kindle Fire HD for $139, still a far cry from the sub-$100 tablets littering the pages of Walmart.com.

But, perhaps burned by that competitive tablet, things changed when the company introduced the Kindle Fire HDX, with its leading-edge processor and display technology. At a starting price of $229 for the 7-inch version, it is significantly less than the $299 iPad Mini, but so is nearly every other tablet below 8 inches.

A better comparison would be with the Google Nexus 7, also priced at $229. Amazon's next category expansion — Fire TV, also loaded with powerful internals — came in at $99, the same price as Apple TV and the highest-end Roku player.

It's not unusual for brands to climb the prestige ladder as their sales grow. HTC, for example, was once a company that developed phones and PDAs for other companies. In the 1980s, Samsung's electronics were dismissed as cheap junk. Now, both are focused mostly on high-end gadgets.

But what Amazon is doing is more like a cross-country expedition than one up a mountain. As Jeff Bezos pointed out early in the Fire Phone presentation, its brand has strong recognition among consumers for customer satisfaction across several metrics.

And according to the YouGov brand index, which measures "brand health" across a variety of measures, Amazon was the #1 brand in 2013, with the Kindle sub-brand coming in 10th behind Cheerios. (Alas, the Fire Phone, like Fire TV, drops the "Kindle" delineation.) Amazon doesn't need to raise the prestige of this brand, it just has to extend the influence of it.

There's another factor at play. The Fire Phone has its share of features designed to keep you at a buying level Amazon finds palatable. However, much more of what consumers do on phones — tasks such as taking photos, sending e-mail and messages, mapping and, yes, even having voice conversations — are more difficult to monetize.  If, as Jeff Bezos said, Amazon monetizes when consumers use their devices (since they inevitably drive purchases on Amazon), there's simply less of the usage pie that Amazon is getting, at least compared to AT&T.

The Fire Phone may not strike fear into the heart of Apple and Samsung for the time being, but it's clearly not intended to. It's about providing an option to Amazon's loyal customers in a product category where its ecosystem advantages are too diluted to disrupt at this point.

Volume Up is a regular column on consumer technology and digital ecosystems. Ross Rubin is principal analyst at Reticle Research and founder and editor of the crowdfunding product site Backerjack. He also blogs about the tech industry at Techspressive.



Amazon.com, Inc. (NASDAQ: AMZN), a Fortune 500 company based in Seattle, opened on the World Wide Web in July 1995 and today offers Earth's Biggest Selection. Amazon.com, Inc. seeks to be Earth's most customer-centric company, where cu... read more »