Raspberry Pi Wifi Setup in Couple Steps

Say, you might have finished configuring your Raspberry Pi. It is running smoothly, but there one thing that gets on your nerves. The pesky ethernet cable is getting in your way. Well, it’s time to get rid of it for good and setup the wifi. To do that, you need to edit the following two files: /etc/network/interfaces and /etc/wpa_supplicant/wpa_supplicant.conf.

Configure the wireless

Let’s start with the network intefaces. Open the first file in text editor:

$ sudo nano /etc/network/interfaces

Go to the wlan0 section, which stands for you wifi adapter, and edit it so it looks like this:

allow-hotplug wlan0
iface wlan0 inet dhcp
  wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
iface default inet dhcp

In case your /etc/network/interfaces does not include a wlan0 section, just copy the whole thing. When you are done, press ctrl + x to save the changes.

Connect to your WLAN

Now all remains to do, is to edit your wifi settings. Edit the wpa_supplicant.conf using the following command:

$ sudo nano /etc/wpa_supplicant/wpa_supplicant.conf

If your network uses the WPA/WPA2 for encryption, add the following section:

network={
  ssid="Name of your network"
  psk="Password"
  key_mgmt=WPA-PSK
}

But if you are using WEP (you really should be using the more secure WPA2 by the way), add this instead:

network={
  ssid="Name of your network"
  wep_key0="Password"
  key_mgmt=NONE
}

Fill in your network’s name and password accordingy and save the changes by pressing ctrl + x. That’s it. You can test the changes by rebooting the Pi with the ethernet cable disconnected. Enjoy your new found freedom from cables.