Language Selection

English French German Italian Portuguese Spanish

power over ethernet

Filed under
Sci/Tech

power over ethernet lets you add a dc voltage source to the unused pairs in your ethernet cable. this power can be used to power devices that are poe compatible by just plugging the cable into them. other devices can be powered by using a “tap” to break the dc pairs back out of the cable. poe is a good choice for powering devices in remote locations. a router can be placed on a roof right next to its high-gain antenna, reducing signal loss, without having to run a separate ac line. plugging the dc “injector” into a ups will keep dedicated voip phones functioning during a power outage. terry schmidt has written a nice guide covering the theory behind scratch building poe injectors and taps. it also has photos and descriptions of other peoples projects along with tips on how to keep from turning your router into a pile of plastic goo.

Instructions.

Source.

More in Tux Machines

German Greens want increased support for open source

The Greens in the German parliament want the government to shore up support for open source, but are not sure how. The politicians are working with the Free Software Foundation Europe, to figure out the most convincing arguments and how to increase pressure on the federal government. Read more

Windows Users Download Ubuntu 30,000 Times a Day and Other Cool Facts

Ubuntu is the most used Linux desktop operating system, but that might not be all that transparent, so we would also like to present some interesting figures, like the number of Windows users that download Ubuntu every day. Read more

Mozilla Firefox 37.0.2 Out Now, Fixes Incorrect Rendering of Google Maps

Mozilla pushed today the second maintenance release of its stable Firefox 37.0 web browser to Linux, Windows, and Mac OS X users worldwide, available for download right now via the application’s built-in updater. Read more