thanks for the good explanation on how to run p910nd on an Omega!
I have the Omega2+, and I am trying to get my printer (Samsung ml-2850d) running with p910nd. I have a USB cable soldered directly to the Omega2 as power supply with a 3.3V voltage regulator inbetween. Then I connect the printer via USB directly to the D- and D+ pins of the Omega2 board (pin out).
The problem is, that I do not see my printer under /dev/usb/. I am not sure whether the printer needs the gnd and v+ connection from the board to be recognized or if it's not supported?