Is it possible to power a raspberry pi over ethernet?

Question

Electronics

Is it possible to do without microusb and power raspberry pi 2 via ethernet connector?

Answer 1

She doesn’t know how to POE, but with the help of a soldering iron, taking into account the losses on the cable, of course, you can simply apply voltage to 4-5 and 7-8 pairs, and then bring them out of the coil into the power connector .. A crutch, but it works.
Of course, if it is impossible to connect external power to where the raspberry will be located.
But just for the sake of interest, it’s impossible to power it via RJ-45 instead of MicroUSB at the stand.