Updating wifi information for a robot (OUT OF DATE)

Do not use this method, it is out of date. This article is preserved for documentation only, because this wiki does not have version control.

Resetting the wireless password

Current Method

utexas-iot

With utexas-iot, we can use the WPA2 security without dealing with he complexity of WPA2-Enterprise. You will first need to go to https://network.utexas.edu/, click 'add wifi device' and fill in the information.

You can get the MAC address of the NIC of the robot by running

$ ip addr show

in a terminal on the robot, and locating the appropriate address corresponding to the wireless interface. For description, find the hostname of the robot and use: bwi-HOSTNAME-wifi After this information is entered, you will be presented with a password.

In a terminal on the robot, run:

$ wpa_passphrase "utexas-iot" "PASSWORD-FROM-NETWORK.UTEXAS" | sudo tee /etc/wpa_supplicant.conf

This updates the wpa_supplicant.conf file to use the new credentials for the utexas-iot network. If you're configuring a new robot to connect to the internet, you'll also need to fill in the /etc/network/interfaces file:

$ sudo vim /etc/network/interfaces

and replace the contents with the following

auto wlo1
iface wlo1 inet dhcp
pre-up ip link set dev wlo1 up
pre-up wpa_supplicant -iwlo1 -Dnl80211 -c/etc/wpa_supplicant.conf -B
post-down killall wpa_supplicant
post-down ip link set dev wlo1 down

be sure to update the instances of wlo1 if your wireless interface is named something else, i.e. wlan3, wlan0r1 etc.