Wifi static IP configuration

Introdution

If we want to have a cool wireless robot with which we can remote communicate we need a wireless communication. The best and also the easiest solution seems to be a standard network connection over wifi.

We need

• Raspberry Pi with ArchLinux
• wifi dongle
• enabled and configured wifi router

 

Wifi dongle

Wifi dongle detection

Plug the wireless dongle into the USB port of Raspberry. Check if the device has been detected, call:

# lsusb

We should see some WLAN adapter, for example:

depending on the wifi dongle written information can be a bit different. On these screens is very cheap and popular device.

Configure static IP

copy example config file:

# cp /etc/netctl/examples//wireless-wpa-static /etc/netctl/robot-wireless-profile

edit new file (you can run more intuitive editor than the vi ;))

# vi /etc/netctl/robot-wireless-profile

 contents of the file:

Description='Lets make a robot example'
Interface=wlan0
Connection=wireless
Security=wpa
ESSID='ssid_of_your_network' #edit this line
Key='your_wpa_shared_key' #edit this line
IP=static
Address='your_static_ip/24' #edit this line
Gateway='192.168.1.1'
DNS=('dns_server1' 'dns_server2')
# Uncomment this if your ssid is hidden
#Hidden=yes

in most default configured networks just modify four lines (yellow text).

Parameter:

Security=wpa

is valid for both WPA and WPA2.

run wifi connection:

# netctl start robot-wireless-profile

if there are no errors check the connection:

# ifconfig

we should see:

To wifi connection was established at system startup you need to call:

# netctl enable robot-wireless-profile

The final test

• stop ArchLinux:
  

  # shutdown

• unplug the ethernet cable
• reconnect the power
• try to connect to your wifi ip, eg (change the IP 192.168.1.112 to your):

  # ssh root@192.168.1.112
  

links:

https://wiki.archlinux.org/index.php/netctl