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operations:big_screens [2011/12/05 05:25] Jim Lovell |
operations:big_screens [2016/09/04 22:37] Warren Hankey |
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- | The Stairwell displays are run on a Windows Vista (yes,yes, I know) PC called ops3. To access it, start a vncviewer to ops3 wityh the usual password. You can also start up a VNC session to it on ops4 from the "Applications -> AuScope -> Operations" menu. | + | The Stairwell displays are run by four Raspberry Pi mini computers. Communication to the Pis is from the Ubuntu machine, ''auscope-screens'' at 131.217.62.142. User ''auscope'', password the usual. |
- | Please power-down the stairwell monitors using the switches under the main desk labelled Screen 1, Screen 2, ... when finishing an experiment or after hours to save power. | + | 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 ''auscope-screens''. |
- | ==== Powerpoint slide shows ==== | + | The switch labeled Screen 4 also powers the Raspberry Pi's. |
- | * {{:operations:auscope_screens_template.potx|Powerpoint template}} | + | |
- | * {{:operations:auscope_screens_example.pptx|Example slideshow}} | + | 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. |
+ | |||
+ | ==Instructions== | ||
+ | |||
+ | Turn off/on power switches for screens under desk in Auscope room (north west corner). | ||
+ | |||
+ | [1][2]\\ | ||
+ | [3][4] | ||
+ | |||
+ | The four pi (and network switch) are connected to switch [4] 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 with power switch [4] 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. | ||
+ | <code> | ||
+ | ssh pi@pi2 | ||
+ | </code> | ||
+ | |||
+ | SSH keys are all in place. Passwords are all the usual. | ||
+ | |||
+ | You can also vnc each pi[1-4], e.g. | ||
+ | <code> | ||
+ | vncviewer pi3 | ||
+ | </code> | ||
+ | For remote access first ssh into auscope@131.217.62.142, then ssh the pi | ||
+ | |||
+ | 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 | ||
+ | <code> | ||
+ | [SeatDefaults] | ||
+ | xserver-command=X -s 0 dpms | ||
+ | </code> | ||
+ | |||
+ | ### start x programs on startup in /etc/xdg/lxsession/LXDE-pi/autostart | ||
+ | |||
+ | ### epiphany-browser full screen, F11 | ||