GNet Solutions » Hardware Hacking » Raspberry Pi

Setting up WiFi is also pretty straight forward. You just need to add the name of your wireless network (its SSID) and your password to a configuration file.

1. Boot the Raspberry Pi without the WiFi adapter plugged in.
2. Open a terminal session and enter the following command into it:
   

   sudo nano /etc/network/interfaces
   

1. Next add the following
   

   auto lo
   
   iface lo inet loopback
   iface eth0 inet dhcp
   
   allow-hotplug wlan0
   auto wlan0
   
   iface wlan0 inet dhcp
   wpa-ssid "SSID" 
   wpa-psk "SuperSecretPassword" 
   

• If you are using a 'hidden' SSID, try the following
  

  auto lo
  
  iface lo inet loopback
  iface eth0 inet dhcp
  
  auto wlan0
  allow-hotplug wlan0
  iface wlan0 inet dhcp
  wpa-scan-ssid 1
  wpa-ap-scan 1
  wpa-key-mgmt WPA-PSK
  wpa-proto RSN WPA
  wpa-pairwise CCMP TKIP
  wpa-group CCMP TKIP
  wpa-ssid "HiddenSSID" 
  wpa-psk "SuperSecretPassword" 
  
  iface default inet dhcp
  

  
  Of course, you should put in your network and password! Note that you need to keep the double-quote characters around your wireless network name and password.

This kind of editor does not let you use the mouse. Instead, use the cursor keys to move around the file.

When you have finished press [CTRL]+[x] This will ask if you want to save the modified files. Press [Y] and then Return to save the file with the same name.

Shut down your Raspberry Pi, plug the WiFi adapter in and start it up again. You should find that the Raspberry Pi connects using the WiFi adapter as it boots up.

reboot