====Pictures at an Exhibition ====
[[http://wolfgang-spahn.de/Installation_10_BilderEinerAusstellung.html]]\\

===Techrider===
{{ :projects:picture_of_an_exhibition_tec_rider.pdf |}}\\

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=== Setup ===
{{:projects:scetch_setup.jpg|}}\\
{{:projects:setup_picture_of_an_exhibition.jpg|}}\\
{{:projects:setup_picture_of_an_exhibition_close01.jpg?400|}}\\
{{:projects:setup_picture_of_an_exhibition_close02.jpg?400|}}\\
{{:projects:setup_picture_of_an_exhibition_close03.jpg?400|}}\\

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=== Raspberry Pi Image ===
Image:\\
[[http://daten.wolfgang-spahn.de/picture_of_an_exhibition_29aug2017.7z]]\\

==Raspbian Jessy (upgrade 28.Aug 2017)==
  user: pi
  PW: raspberry
  IP: 192.168.0.111

path to autostart:
  /etc/rc.local

path to shutdownbutton script (pin 22):
  /home/pi/pictures_of_an_exhibition/shutdownbutton_02.py

path to camera script:
  /home/pi/pictures_of_an_exhibition/simple_camera.py

== Remount the SD card writeable ==
  $ sudo mount / -o remount,rw

== HDMI setting==

Check the current HDMI state:
  $ tvservice -s

List of CEA supported modes:
  $ tvservice –m CEA

List of DMT supported modes:
  $ tvservice –m DMT

Choose the prefered mode, DMT work best with HDMI beamer and monitors.\\
CEA is hdmi_group=1\\
DMT is hdmi_group=2\\

Open config file: 
  $ sudo nano /boot/config.txt

change for example CEA 720p:
  hdmi_group=1
  hdmi_mode=4

Low level changes for DMT 640×480 60 Hz would be:
  hdmi_group=2
  hdmi_mode=4

All modes are on: [[http://elinux.org/RPiconfig]]\\
or here is some more information: [[http://embedded-artist.net/doku.php?id=hdmi_mode]]\\
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