The Stairwell displays are run by four Raspberry Pi mini computers. Communication to the Pis is from the Ubuntu machine,
auscope-screens at 220.127.116.11. User
auscope, password the usual.
Please power down the stairwell monitors using the switches under the main desk labelled Screen 1, Screen 2, after hours to save power. Please power them up at 8-9am weekdays if you are in the control room. The Raspberry Pi's are shutdown automatically at 4:55pm each day by a cron job on
The power switch labeled Screen 4 also powers the Raspberry Pi's.
There are instructions for controlling the displays on the Desktop of
auscope-screens. You can ssh or vnc the Raspberry Pi's after first logging into the
auscope-screens machine. The Pi's are on a subnet, quarantined from the uni network, routed through auscope-screens. The Pi's can display video, pdf's, slide shows in pdf format, and can access web pages and resources.
Turn off/on power switches for screens under desk in Auscope room (north west corner).
The four pi (and network switch) are connected to switch  power, and will boot and loop video when powered on.
A cron job on
auscope-screens will shut the pi down at 4:55 pm daily (shutdownpi.sh).
If communication is lost, power cycle Pi's with power switch  under desk.
On boot the pi should start looping through randomly selected movies.
(play.sh called in /etc/rc.local on pi)
You can ssh each pi[1-4], user is pi, e.g.
SSH keys are all in place. Passwords are all the usual.
You can also vnc each pi[1-4], e.g.
For remote access first ssh into firstname.lastname@example.org, then ssh the pi
Outside internet access for the pi's is achieved by forwarding all packets through the
It appears to the outside world that all traffic emanates from 18.104.22.168
More detail on the networking of the screen computers is in pi_network.txt on the auscope-screens'' Desktop.
useful software on pi: omxplayer (video) gpicview (lightweight image viewer) epiphany (web browser)
Turn off screen blanking on pis with this line in /etc/lightdm/lightdm.conf under
[SeatDefaults] xserver-command=X -s 0 dpms
Start x programs on startup in /etc/xdg/lxsession/LXDE-pi/autostart
Epiphany-browser full screen, F11