Welcome to Apache™ Hadoop™!

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The Apache™ Hadoop™ project develops open-source software for reliable, scalable, distributed computing.

The Apache Hadoop software library is a framework that allows for the distributed processing of large data sets across clusters of computers using a simple programming model. It is designed to scale up from single servers to thousands of machines, each offering local computation and storage. Rather than rely on hardware to deliver high-avaiability, the library itself is designed to detect and handle failures at the application layer, so delivering a highly-availabile service on top of a cluster of computers, each of which may be prone to failures.

via Welcome to Apache™ Hadoop™!.

Speech synthesis for asterisk

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Speech synthesis for asterisk is an Asterisk AGI script that uses Google Translate to convert text to speech and play it back to the user. It supports a variety of different languages, local caching of voice data, and a choice between 8 kHz or 16 kHz sample rates to provide the best possible sound quality along with the use of wideband codecs.

via Speech synthesis for asterisk – Freecode.

Dirt Simple Wi-Fi Signal Booster for Free

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Dirt Simple Wi-Fi Signal Booster for Free | Hack N Mod.

You can make this wi-fi parabolic antenna for your router without breaking a sweat.

  • Manila file folders
  • EZ-12 Templates for the antenna from Freeantennas.com
  • Adhesive
  • Aluminum foil

The parabolic antenna is nothing but a focusing device cut out from the stiff manila folder and backed by a layer of aluminum foil on the back for the reflective surface. The exact cutting pattern is aided by the EZ-12 template.

Click here for templates.

Kite-Like Turbines Harness Wind Power At Altitude

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The Makani Airborne Wind Turbines, which resemble a fleet of mini airplanes, are launched when wind speeds reach 3.5 meters per second. Rotors on each blade help propel it into orbit, and double as turbines once airborne. The blades are tethered to the ground with a cord that delivers power to throw them into the sky and receives energy generated by the turbines to be sent to the grid-connected ground station.

via Kite-Like Turbines Harness Wind Power At Altitude | TechCrunch.

How To Build an Open Source Wi-Fi HotSpot with DD-WRT

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If you’ve ever tried to set up a Wi-Fi HotSpot, you may have already discovered that you need more than a broadband Internet connection and wireless router or access point. Off-the-shelf routers and APs don’t provide the “captive portal” function needed to either authenticate users or just let them know who to thank for their free connection. Nor do they usually provide other features such as billing support, bandwidth limiting and user isolation. To obtain hotspot-specific features and capabilities, you must use a device commonly referred to as a hotspot gateway.

via How To Build an Open Source Wi-Fi HotSpot with DD-WRT – SmallNetBuilder.

Coova :: Open Source Captive Portal Access Controller and RADIUS Software

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CoovaChilli is an open-source software access controller for captive portal (UAM) and 802.1X access provisioning, based on the popular (but now defunct) ChilliSpot project, and is actively maintained by an original ChilliSpot contributor. CoovaChilli is released under the GNU General Public License (GPL). Contact us for commercial support and licensing options.

via Coova :: Open Source Captive Portal Access Controller and RADIUS Software |.

ChilliSpot

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ChilliSpot – Wikipedia, the free encyclopedia.

ChilliSpot is an open source captive portal or wireless LAN access point controller. It is used for authenticating users of a wireless LAN. It supports web based login, which is today’s standard for public HotSpots, WISP “smart-client” authentication, and it supports Wi-Fi Protected Access (WPA and WPA2). Authentication, authorization and accounting (AAA protocol) is handled via RADIUS (on board or remote).