Configure Wifi on Raspberry Pi

Quick steps to installing with either USB Wifi dongle or with the RPI3 internal wifi.

apt-get update
apt-get install wirless-tools

Run iwconfig to list all connected wireless devices and find which one you want to configure. Mine was wlan0:


Add device name to /etc/network/interfaces:

auto wlan0
iface wlan0 inet dhcp

Bring wifi up with:

ifdown wlan0; ifup wlan0;

Run ifconfig and you should now see the wifi device but without an ip address. Run a network scan to find all access points:

iwlist wlan0 scan

… and a list of available access points should show up. Look for the ESSID.

First add the wpa-conf file to the wireless configuration file in /etc/network/interfaces. The wlan0 section of this file should now look like:

auto wlan0
iface wlan0 inet dhcp
   wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

Edit /etc/wpa_supplicant/wpa_supplicant.conf and add the following section to the bottom of the file. ESSID is case sensitive. Assuming that your ESSID is called Testing and passkey is TestingPassword:


Easiest is now to reboot and then check your interfaces with:


Your wlan0 should show up with an ip address and you are good to go.