== Nanostation M5 Passthrough ==
How To Use PoE Passthrough with OpenWRT

Device: Nanostation M5

Powered device: Ubiquiti PicoStation

If you want you can use PoE Passthrough to power on a device  (in this case Ubiquiti PicoStation) with a secondary LAN interface.

On a device with OpenWRT you have to add these lines:

{{{
echo 8 > /sys/class/gpio/export
}}}
{{{
echo out > /sys/class/gpio/gpio8/direction
}}}
{{{
echo 1 > /sys/class/gpio/gpio8/value
}}}
If you want to power off the device you have to do:

{{{
echo 0 > /sys/class/gpio/gpio8/value
}}}