Recently I wanted to configure a wireless printer in a university’s dorms room, which only have wired network. In order to do this change “stealthy”, I needed to use the smallest possible router with USB connection.
Atheros AR7240 CPU (400Mhz)
Atheros AR9331 Chipset (integrated wireless)
802.11 b/g/n 150Mbps
4 MB flash memory, 32 MB RAM
USB 2.0 port
Powered via micro-USB socket
Tiny form factor: 5.7cm x 5.7cm x 1.8cm
Specifications and size makes it a great solution for travels also. This router can be found in eBay at sub-$30 price range, shipped. There are some hardware versions, and you should hope to get a compatible version with OpenWRT, since the default firmware is in Chinese. Hardware version is written at the bottom of the router, and I got v1.6. Connecting to the web interface, I could see more details regarding it – FW build 130321, original FW rel. 37153n. According this model’s OpenWRT page, version is supported for AA, which is the stable version of the firmware.
Starting the process is simple, connect to the router using Ethernet cable, go to 192.168.1.1 in your browser (username: admin, password: admin). Click on last +, and then 3rd bulletin. You should see something similar to this screen:
Download and use the firmware in this page: http://wiki.openwrt.org/toh/tp-link/tl-wr703n
Continue configure the router to match your environment needs (Static IP / DHCP / PPPoE, Wifi). There are many good guides, including:
For the printer server part, you’ll need to connect using putty (SSH client) to the router’s address, installing a lightweight USB package –
opkg update opkg install p910nd kmod-usb-printer
If printer is already connected, you could monitor the connection status using command
This command will direct you to the right device path, which should be either
/dev/lp0. In my case it was
/dev/usb/lp0. You could see it if you’ll
cd to the
vi /etc/config/p910nd ### Enter the following configuration to file config p910nd option device /dev/usb/lp0 option port 0 option bidirectional 1 option enabled 1
Once file is saved, you can start the service and enable service to start at boot time:
/etc/init.d/p910nd start /etc/init.d/p910nd enable
We’ll have to open printer ports in the firewall as well.
vi /etc/config/firewall ### Enter the following configuration to file: # Allow printer port config rule option name 'allow-printer' option src 'lan' option proto 'tcp' option dest_port '9100' option target 'ACCEPT'
and restart firewall service:
Enjoy your new Router / Wireless Printer server!