===== Schermen DJ-hok =====

==== Systeem ====

2 schermen via micro-HDMI verbonden met:

  * model: RaspBerry Pi 4B (DJ-hok: 8GB RAM, benedenbar: 1GB RAM)
  * systeem: RaspBerry Pi OS 12 ("bookworm")

==== Client-app slideshow ====

Om te zorgen dat Maarten Zoetemeijer zelf ook posters op de schermen kan knallen gebruiken we op Android de app //AndFTP// en verbinden middels SFTP naar de Pi in de directory <code bash>sftp://192.168.178.9/home/pi/Pictures</code>

==== Inrichting RaspBerry Pi ====

=== Bijwerken en nodige packages erop ===

<code bash>
sudo apt update && sudo apt full-upgrade && sudo rpi-eeprom-update -a && sudo apt clean && sudo apt autoclean && sudo apt autoremove && deborphan
sudo apt install deborphan feh chromium vim mc unclutter
</code>

=== Adapt autostart ===

<code bash>
pi@raspberrypi:~ $ cat /etc/xdg/lxsession/LXDE-pi/autostart
@lxpanel --profile LXDE-pi
@pcmanfm --desktop --profile LXDE-pi
@xscreensaver -no-splash

# Toevoegingen KvhP
/home/pi/bin/untappd.sh
sleep 15
unclutter &
/home/pi/bin/slideshow.sh
</code>

=== Slideshow Photo's with `feh` ===

<code bash>
pi@raspberrypi:~ $ cat bin/slideshow.sh
#!/bin/sh

# autozoom full-screen "-Z" werkt niet; we staan niet full-screen maar op het rechter scherm
##feh -x --geometry 1080x1920+1080+0 -ZY -B black -Z --stretch --ignore-aspect -D 20 -r Pictures -R 300

# Vorige stand: 
feh -x --geometry 1080x1920+1080+0 -ZY -B black --scale-down --auto-zoom -D 20 -r /home/pi/Pictures -R 300
</code>

=== Untappd Bierkaart via Chromium Browser ===

<code bash>
pi@raspberrypi:~ $ cat bin/untappd.sh
#!/bin/sh

## untapped krijtbord
#/usr/bin/chromium --kiosk  --disable-restore-session-state http://business.untappd.com/boards/48272 &
## untapped foto
/usr/bin/chromium --kiosk  --disable-restore-session-state http://business.untappd.com/boards/59076 &
</code>

=== Daily reboot ===

Sinds de Pi op RaspBerry Pi OS 12 ("bookworm") draait is dit niet meer nodig.

<code bash>
crontab -e
</code>

<code bash>
pi@raspberrypi:~ $ sudo tail -2 /var/spool/cron/crontabs/pi
# m h  dom mon dow   command
8 18 * * * sudo shutdown -r now
</code>

=== SWAP ===

<code bash>
pi@raspberrypi:~ $ sudo dphys-swapfile swapoff
pi@raspberrypi:~ $ sudo vim /etc/dphys-swapfile
pi@raspberrypi:~ $ egrep 'MAXSWAP|SWAPSIZE' /etc/dphys-swapfile
##CONF_SWAPSIZE=100
CONF_SWAPSIZE=4096
#CONF_MAXSWAP=2048
CONF_MAXSWAP=4096
pi@raspberrypi:~ $ sudo dphys-swapfile setup
want /var/swap=4096MByte, checking existing: deleting wrong size file (2147483648), generating swapfile ... of 4096MBytes
pi@raspberrypi:~ $ sudo dphys-swapfile swapon
pi@raspberrypi:~ $ sudo reboot
</code>

=== Statisch IP ===

<code bash>
pi@raspberrypi:~ $ grep -A 3 "^interface eth0" /etc/dhcpcd.conf
interface eth0
static ip_address=192.168.178.9/24
static routers=192.168.178.1
static domain_name_servers=192.168.178.1 8.8.8.8 8.8.4.4
</code>

=== Disable compositor  ===

<code bash>sudo raspi-config</code>
  * Advanced Settings
  * Compositor
  * No