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operations:big_screens [2016/09/04 22:39] Warren Hankey |
operations:big_screens [2017/12/05 00:10] (current) Warren Hankey |
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+ | ===Raspberry Pi Video Display=== | ||
+ | |||
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. | 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, 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''. | 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''. | ||
- | The switch labeled Screen 4 also powers the Raspberry Pi's. | + | 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. | 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. | ||
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vncviewer pi3 | vncviewer pi3 | ||
</code> | </code> | ||
+ | |||
+ | |||
+ | ==Network== | ||
For remote access first ssh into auscope@131.217.62.142, then ssh the pi | For remote access first ssh into auscope@131.217.62.142, then ssh the pi | ||
+ | Outside internet access for the pi's is achieved by forwarding all packets through the ''auscope-screens' machine. | ||
+ | It appears to the outside world that all traffic emanates from 131.217.62.142 | ||
More detail on the networking of the screen computers is in pi_network.txt on the ''auscope-screens'' Desktop. | More detail on the networking of the screen computers is in pi_network.txt on the ''auscope-screens'' Desktop. | ||
+ | |||
+ | ==Software== | ||
useful software on pi: | useful software on pi: | ||
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epiphany (web browser) | epiphany (web browser) | ||
- | ### turn off screen blanking on pis with this line in /etc/lightdm/lightdm.conf under | + | Turn off screen blanking on pis with this line in /etc/lightdm/lightdm.conf under |
<code> | <code> | ||
[SeatDefaults] | [SeatDefaults] | ||
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</code> | </code> | ||
- | ### start x programs on startup in /etc/xdg/lxsession/LXDE-pi/autostart | + | Start x programs on startup in /etc/xdg/lxsession/LXDE-pi/autostart |
- | ### epiphany-browser full screen, F11 | + | Epiphany-browser full screen, F11 |