This is the workaround for a touch screen OGG PLayer based on a Raspberry Pi with the Raspberry Pi Touch Display. 10 of these players were used in the exhibition Stolen Moments at the IWALEWAHAUS in Bayreuth 2017.

The OGG file player was made with pygame for Raspbian Jessy.
http://www.pygame.org/hifi.html
http://www.pygame.org/docs/index.html

Other Links & Knowledge:
http://www.nerdparadise.com/tech/python/pygame/basics/
https://www.raspberrypi.org/magpi/issues/essentials-games-vol1/

IP Address: 192.168.0.123
PW:st0lenm0ments

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http://elinux.org/RPi_VerifiedPeripherals#USB_Sound_Cards

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$ sudo apt-get update
$ sudo apt-get upgrade

$ sudo apt-get install zip, htop
$ sudo apt-get install python3, python3-pygame, python3-pyqt5, python3-pip, idle

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https://www.raspberrypi.org/forums/viewtopic.php?f=108&t=120793

$ sudo nano /boot/config.txt

to rotate the display 270 degree add:

display_rotate=3 

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http://forums.pimoroni.com/t/official-7-raspberry-pi-touch-screen-faq/959
https://github.com/pimoroni/python-multitouch

$ wget https://github.com/pimoroni/python-multitouch/archive/master.zip
$ unzip master.zip
$ cd python-multitouch-master/library/ 
$ sudo python3 setup.py install

Example:

import ft5406
ts = ft5406.Touchscreen()

while True:
    for touch in ts.poll():
        print(touch.slot, touch.id, touch.valid, touch.x, touch.y)

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Change the SD card to a read-only mode.
http://raspberrypi.stackexchange.com/questions/5112/running-on-read-only-sd-card
https://web.archive.org/web/20150101110424/http://raspberrycenter.de/forum/umruestung-raspberry-pi-read-only-root-filesystem

in:

$ sudo nano /etc/fstab

change:

/dev/mmcblk0p2  /               ext4    defaults,noatime,ro  0       1
tmpfs           /tmp            tmpfs   defaults,size=30M    0       0

disable rsyslog and dphys-swapfile:

$ sudo systemctl disable rsyslog
$ sudo systemctl disable dphys-swapfile

To remount the partition writabe:

$ sudo mount / -o remount,rw

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$ alsamixer

find the soundcard number:

$ aplay -l

in:
$ sudo nano /etc/asound.conf

$ sudo nano ~/.asoundrc

write (with your card number):

pcm.!default {
  type hw
  card 1
}
ctl.!default {
  type hw
  card 1
}

and in:

$ sudo nano /usr/share/alsa/alsa.conf

change:

defaults.ctl.card 0
defaults.pcm.card 0

to (depends on your number):

defaults.ctl.card 1
defaults.pcm.card 1

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Open:

$ sudo nano /boot/cmdline.txt

Addd:

consoleblank=0

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$ sudo mkdir /home/pi/stolenmoments
$ sudo blkid
/dev/mmcblk0p3: LABEL="STICK" UUID="A933-7A00" TYPE="vfat" 
$ sudo nano /etc/fstab

edit:

#USB Stick on /dev/sda1
UUID=A933-7A00       /home/pi/stolenmoments/data    vfat    utf8,umask=022,uid=pi,gid=pi  0       0

$ sudo mount -a

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In Raspian Jessie it should be activated allready. If not enable the SSH server by opening the raspi-config:

$ sudo raspi-config

In 8. Advanced Options you can activate SSH.

Look up your gateway:

$ netstat -r -n

Find you IP address:

$ ifconfig

or:

$ ip addr

Give the Raspberry Pi a static IP address. Open the interfaces file:

$ sudo nano /etc/network/interfaces

Add these lines after “face eth0 inet dhcp”:

    
  # Ethernet
  auto eth0:1
  allow-hotplug eth0:1
  iface eth0 inet static
    address 192.168.0.123
    netmask 255.255.255.0
    gateway 192.168.0.1
    dns-nameservers 192.168.0.1
    

Save and quit, ctl+o, Return, ctl+x.

Disable the DHCP-Client:
In Raspbian Jessie:

$ sudo service dhcpcd stop
$ sudo systemctl disable dhcpcd       
     

Restart ethernet:

$ sudo ifdown eth0:1
$ sudo ifup eth0:1

Or/and reboot:

$ sudo reboot

One can login from your computer with:

$ ssh pi@192.168.0.099

or with XWindows support:

$ ssh -XY pi@192.168.0.099

PW: raspberry

If the host key verification failed, one can remove the old key with:

$ ssh-keygen -R 192.168.0.099

And with

~.

one can terminate a broken ssh session.

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