Configuring Networking On A Raspberry Pi With a Edimax EW-7811Un
There are a bunch of guides around but this worked for me. The first thing I did was to plug it in and to make sure it was recognized by
lsusb. It was:
Bus 001 Device 002: ID 0424:9512 Standard Microsystems Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. Bus 001 Device 004: ID 7392:7811 Edimax Technology Co., Ltd EW-7811Un 802.11n Wireless Adapter [Realtek RTL8188CUS] Bus 001 Device 005: ID 1a40:0101 Terminus Technology Inc. 4-Port HUB
Then I modifed
auto lo iface lo inet loopback iface eth0 inet dhcp # The WIFI network interface auto wlan0 iface wlan0 inet static wpa-ssid <your ssid> wpa-psk <your key> wpa-key_mgmt WPA-PSK address 192.168.1.99 netmask 255.255.255.0 network 192.168.1.0 broadcast 192.168.1.255 gateway 192.168.1.1
After a reboot, it was up.