I am running Rasbperry pi and have the pyusb module installed. The printer is Bus 001 Device 004: ID 0fe6:811e Kontron (Industrial Computer Source / ICS Advent) Parallel Adapter, and it's idVendor and idProduct were found through the lsusb command (0fe6:811e).
Just like in the instructions, I enter:
from escpos.printer import Usb p = Usb(0x0fe6, 0x811e)
Am getting these error
raise USBError(_strerror(ret), ret, _libusb_errno[ret]) usb.core.USBError: [Errno 13] Access denied (insufficient permissions)
Why i get this? What i did wrong? How do i solve this?