Autostart chromium in fullscreen mode

Edit ~/.config/lxsession/LXDE-pi/autostart and add the following line:

@chromium-browser --start-maximized --start-fullscreen

Connect to a hidden WPA2 AP without using wpa_supplicant

Generate Passphrase (PSK) using:

$ wpa_passphrase "" ""

Edit /etc/network/interfaces and add the following:

auto wlan0
allow-hotplug wlan0
iface wlan0 inet dhcp
wpa-ap-scan 2
wpa-key-mgmt WPA-PSK
wpa-proto RSN WPA
wpa-pairwise CCMP TKIP
wpa-group CCMP TKIP
wpa-ssid ""
wpa-psk 
iface default inet dhcp

Disable Screen blanking

On newer versions of raspbian:

Edit /boot/cmdline.txt and add the following line:

consoleblank=0

On older versions of raspbian:

Edit /etc/kbd/config and add the following lines:

BLANK_TIME = 0
POWERDOWN_TIME = 0

Disable Camera LED

Edit /boot/config.txt and add the following line:

disable_camera_led=1

Set Volume

$ amixer set PCM -- 100%

Set Volume in omxplayer

$ export DBUS_SESSION_BUS_ADDRESS=$(cat /tmp/omxplayerdbus.${USER:-root})
$ dbus-send --print-reply --session --reply-timeout=500 \
--dest=org.mpris.MediaPlayer2.omxplayer \
/org/mpris/MediaPlayer2 org.freedesktop.DBus.Properties.Set \
string:"org.mpris.MediaPlayer2.Player" \
string:"Volume" double:0.5   # <-- 0.5 = 50% sound volume

Autostart applications

Edit /home/pi/.config/lxsession/LXDE-pi/autostart and add the following line to start the chromium-browser in fullscreen mode and without displaying crash reports on boot:

@chromium-browser --start-maximized --start-fullscreen --disable-session-crashed-bubble --disable-infobars