@Zheng-Han Thanks I managed to get it to work! Awesome. Below will detail the steps I took.

1. Change root Password:
   passwd

2. Enable Default LEDE repo:
   vi /etc/opkg/distfeeds.conf
   src/gz reboot_core http://downloads.lede-project.org/snapshots/targets/ramips/mt7688/packages
   src/gz reboot_base http://downloads.lede-project.org/snapshots/packages/mipsel_24kc/base
   src/gz reboot_packages http://downloads.lede-project.org/snapshots/packages/mipsel_24kc/packages

3. Update USB-Essentials
   opkg update
   opkg install kmod-usb2 --force-depends

4. Enable TCP Port 9100
   vi /etc/config/firewall
   #Allow attached network printer
   config rule
   option src 'apcli0'
   option proto 'tcp'
   option dest_port '9100'
   option target 'ACCEPT'

5. Update USB Printer Driver
   opkg [code]upgrade kmod-usb-printer --force-depends

6. Plug In Printer and Check if is Connected
   Look for /dev/usb/lp0

7. Install p910nd daemon
   opkg install p910nd

8. Configure daemon
   vi /etc/config/p910nd
   config p910nd
   option device /dev/usb/lp0
   option port 0
   option bidirectional 1
   option enabled 1

9. Restart daemon
   /etc/init.d/p910nd restart

@Luciano-S I don't have a github or anything. Maybe you can help set it up?
@Costas-Costas I was using a O2 but i dont see why it will not work for the rest of the series.
@James-Harding I didn't really meant it for printing from a phone. But it is a good idea. Will look into it when I have more time. Work for me this month is really pilling up.

@Nils-Flaschel I am not sure as I have not done with physical wiring to the board. I am using a dock currently. Will be looking to remove the dock when I have time to figure everything out. You could try providing a 5V to V+ and ground to V-.

@Luciano-S. okayz! will look into it when I am free. Thanks!

@Luciano-S I don't have a github or anything. Maybe you can help set it up?
@Costas-Costas I was using a O2 but i dont see why it will not work for the rest of the series.
@James-Harding I didn't really meant it for printing from a phone. But it is a good idea. Will look into it when I have more time. Work for me this month is really pilling up.

@Zheng-Han Thanks I managed to get it to work! Awesome. Below will detail the steps I took.

1. Change root Password:
   passwd

2. Enable Default LEDE repo:
   vi /etc/opkg/distfeeds.conf
   src/gz reboot_core http://downloads.lede-project.org/snapshots/targets/ramips/mt7688/packages
   src/gz reboot_base http://downloads.lede-project.org/snapshots/packages/mipsel_24kc/base
   src/gz reboot_packages http://downloads.lede-project.org/snapshots/packages/mipsel_24kc/packages

3. Update USB-Essentials
   opkg update
   opkg install kmod-usb2 --force-depends

4. Enable TCP Port 9100
   vi /etc/config/firewall
   #Allow attached network printer
   config rule
   option src 'apcli0'
   option proto 'tcp'
   option dest_port '9100'
   option target 'ACCEPT'

5. Update USB Printer Driver
   opkg [code]upgrade kmod-usb-printer --force-depends

6. Plug In Printer and Check if is Connected
   Look for /dev/usb/lp0

7. Install p910nd daemon
   opkg install p910nd

8. Configure daemon
   vi /etc/config/p910nd
   config p910nd
   option device /dev/usb/lp0
   option port 0
   option bidirectional 1
   option enabled 1

9. Restart daemon
   /etc/init.d/p910nd restart

@Zheng-Han the p910nd daemon cannot be found in the onion repo. Will it be fine if I take the ipk package file from another wrt branch?

@fossette Thank you for the encouragement.

I have been looking into the openwrt OS abit and found the p910nd package. Seems like it could handle the task. Will be experimenting a bit when I am free.

As for the hardware side, after looking into the schematics of the expansion dock. It will seem like a direct connection to the USB data pins will be a feasible idea. I will have to provide a regulated 5V tho. Or could anyone tell me if the 5V is need?

Hi guys!
I got a laser printer without any network connection. Any idea how can I use the onion to introduce the printer into my network, so that I can "cloud" print.

Just to add on the printer is a HP LaserJet P2055dn. I was hoping to connect the printer to the onion via USB. But since I don't have a dock, I was hoping to link the USB data pins out. Seems pretty easy on the hardware side. But software I really have no idea.