1. Configuring your WiFi network for raspbian using wpa_supplicant
This is the default /etc/network/interfaces file as supplied in the raspbian image:
auto lo
iface lo inet loopback
iface eth0 inet dhcp
allow-hotplug wlan0
iface wlan0 inet manual wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf
iface default inet dhcp
To enable auto-login — sudo nano /etc/wpa_supplicant/wpa_supplicant.conf
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1
network={
ssid="Your-Network-Name"
psk="Your-Network-Password"
}
To add additional networks
Add network={.....} sections defining different networks if you carry your Pi around with you. This will allow you to connect to these other networks at various different locations without needing to change your setup.
2. Configuring your wifi network for raspbian without using wpa_supplicant
Networks using WPA/WPA2 security — sudo nano /etc/network/interfaces
auto lo iface
lo inet loopback
iface eth0 inet dhcp
allow-hotplug wlan0
iface wlan0 inet dhcp
wpa-ssid "Your-Network-Name"
wpa-psk "Your-Network-Password"
Networks using WEP security — sudo nano /etc/network/interfaces
auto lo
iface lo inet loopback
iface eth0 inet dhcp
allow-hotplug wlan0
iface wlan0 inet dhcp
wireless-essid Your-Network-Name
wireless-key Your-Network-Password
Do not use quotation marks around
- Your-Network-Name
- Your-Network-Password — if converted to passkey format
Use quotation marks around
- Your-Network-Password — if in plain text
Networks using no security — sudo nano /etc/network/interfaces
auto lo
iface lo inet loopback
iface eth0 inet dhcp
allow-hotplug wlan0
iface wlan0 inet dhcp
wireless-essid Your-Network-Name
Do not use quotation marks around
- Your-Network-Name
Source: http://www.fars-robotics.net/