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Want to built a robot? $45 BeagleBone Linux PC goes on sale for you

English: A Arduino Uno board. Português: Uma p...
English: A Arduino Uno board. Português: Uma placa Arduino Uno. (Photo credit: Wikipedia)
The market for cheap single-board computers is becoming one of the most surprisingly competitive spaces in the tech industry. On the heels of the million-selling Raspberry Pi, a variety of companies and small groups started creating their own tiny computers for programmers and hobbyists.
Today we have a new entrant that may provide the best bang for the buck for many types of users. It's called the BeagleBone Black and it's the latest in the line of "Beagle" devices that first appeared in 2008, courtesy of Texas Instruments. On sale now for $45, BeagleBone Black sports a 1GHz Sitara AM335x ARM Cortex-A8 processor from Texas Instruments, up from the 720MHz processor used in the previous $90 BeagleBone released in 2011. (Edit: While the purchase link is live, the device may not be available until tomorrow morning. It will also be available at

Beagle's "open" hardware philosophy means all of the chips and designs are available to the public, so anyone with the right equipment and knowledge could make their own.
Using an ARMv7 processor instead of the Pi's ARMv6 one, BeagleBone can run Ubuntu or other Linux distributions as well as Android. It also provides more inputs and outputs than the Pi for connecting to sensors and other devices needed to build robots and electronics projects. The BeagleBone Black has more I/O capability than an Arduino Uno, though not quite as much as the newer Arduino Due.
"This has a lot more I/Os than an Arduino Uno would have," co-founder Jason Kridner told Ars. "It's a full gigaherz Linux desktop computer, but it has all the I/O capabilities you'd have in a typical microcontroller. It really bridges that gap, combining those two worlds together."
Beagle has a thriving development community. There are more than 30 "capes," or plug-in boards compatible with the BeagleBone Black. These allow the device to connect to 3D printers, DMX lighting controllers, a Geiger counter, a telerobotic submarine, LCD touch screens, and more.
Beagle runs semi-independently of Texas Instruments, which sponsors the project with technology and its employees' time. Kridner is a TI employee, but spends nearly all of his time on Beagle projects.
100,000 boards will be made in the first production run of BeagleBone Black. The previous generation sold about 50,000 to 60,000 units "at twice the cost and less performance," Kridner said. He has been amazed by what developers have done with Beagle products so far, and figures it can only get better with the BeagleBone Black.
"You can build 3D printers, you can build rovers, you can build drones, you can build art projects, street lighting," Kridner said. Beagle users are "doing software-defined radio, inspecting the spectrum and wardriving, and searching for faults in the wireless communications systems. I cannot possibly keep up with what everybody's doing with this board."
The processing power and price aren't the only reasons Kridner thinks BeagleBone Black will inspire even greater heights of hacking. The board will be more user-friendly than the previous version, with a MicroHDMI hookup, a pre-installed Linux distribution, and an upgraded Web interface for controlling Arduino-like functionality.
Here's an at-a-glance look at the BeagleBone Black's specs (click for a larger view):


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