diff --git a/README.md b/README.md
index ffd80a9..9e3c621 100644
--- a/README.md
+++ b/README.md
@@ -49,10 +49,13 @@ apt clean
 
 echo "dtoverlay=dwc2" >> /boot/config.txt
 
-add "console=tty3" to /boot/cmdline.txt
+echo "libcomposite" >> /etc/modules
+
+add/change "console=tty3 quiet" to /boot/cmdline.txt
 (console=tty3 loglevel=3 vt.global_cursor_default=0 logo.nologo
 
 copy everything to /opt/freezer/
+chmod a+x /opt/freezer/display.py
 add to /etc/rc.local: python3 /opt/freezer/display.py
 
 ### read-only root
@@ -75,3 +78,4 @@ mount -o remount,rw /boot
  * dritte led für boot?: dtoverlay=gpio-poweroff,gpiopin=23,active_low
  * gpio pins ändern
  * screenshot-tool option für sofortigen screenshot
+ * hdmi auch wenn nach boot eingesteckt aktivieren
\ No newline at end of file
diff --git a/raspberry-environment/display.py b/raspberry-environment/display.py
index 94425f1..d5de780 100644
--- a/raspberry-environment/display.py
+++ b/raspberry-environment/display.py
@@ -112,6 +112,19 @@ def watch_delay_call(
       break
 
 
+
+def os_echo(filename, string):
+  with open(filename, 'w') as f:
+    f.write(string)
+
+
+
+def send_keypress():
+  with open('/dev/hidg0', 'w') as f:
+    f.write("\x00\x00\x04\x00\x00\x00\x00\x00") #press the A-button
+    f.write("\x00\x00\x00\x00\x00\x00\x00\x00")  #release all keys
+
+
 if __name__ == '__main__':
   GPIO.setmode(GPIO.BCM)
   GPIO.setup(18, GPIO.OUT)
@@ -130,7 +143,64 @@ if __name__ == '__main__':
     subprocess.run('cp /opt/freezer/freeze.exe /mnt/', shell=True, check=True)
     subprocess.run(['umount', '/mnt'], shell=False, check=True)
 
-    subprocess.run(['modprobe', 'g_mass_storage', 'file=/tmp/usbdisk.img', 'stall=0', 'removable=1', 'iSerialNumber=1234567890'], shell=False, check=True)
+    # http://irq5.io/2016/12/22/raspberry-pi-zero-as-multiple-usb-gadgets/
+    # http://isticktoit.net/?p=1383
+    subprocess.run(['modprobe', 'libcomposite'], shell=False, check=True)
+    g="/sys/kernel/config/usb_gadget/freezer/"
+    subprocess.run(['mkdir', g], shell=False, check=True)
+
+    os_echo(g+"idVendor", "0x1d6b")  # Linux Foundation
+    os_echo(g+"idProduct", "0x0104") # Multifunction Composite Gadget
+    os_echo(g+"bcdDevice", "0x0100") # v1.0.0
+    os_echo(g+"bcdUSB", "0x0200")    # USB 2.0
+
+    os_echo(g+"bDeviceClass", "0xEF")    # windows enumeration install
+    os_echo(g+"bDeviceSubClass", "0x02") # correct bus driver
+    os_echo(g+"bDeviceProtocol", "0x01") # for multi function
+
+    subprocess.run(['mkdir', g+"strings/0x409"], shell=False, check=True)
+    os_echo(g+"strings/0x409/serialnumber", "34812ee8aa112377") # random
+    os_echo(g+"strings/0x409/manufacturer", "IUL TU Dortmund")
+    os_echo(g+"strings/0x409/product", "Raspberry Screenshot Gadget")
+
+    # config usb_mass_storage
+    subprocess.run(['mkdir', g+"functions/mass_storage.usb0"], shell=False, check=True)
+    os_echo(g+"functions/mass_storage.usb0/stall", "0")
+    os_echo(g+"functions/mass_storage.usb0/lun.0/cdrom", "0")
+    os_echo(g+"functions/mass_storage.usb0/lun.0/ro", "0")
+    os_echo(g+"functions/mass_storage.usb0/lun.0/nofua", "0")
+    os_echo(g+"functions/mass_storage.usb0/lun.0/removable", "1")
+    os_echo(g+"functions/mass_storage.usb0/lun.0/file", "/tmp/usbdisk.img")
+
+    subprocess.run(['mkdir', g+"configs/c.1"], shell=False, check=True)
+    os_echo(g+"configs/c.1/MaxPower", "250")
+    subprocess.run(['ln', '-s', g+"functions/mass_storage.usb0", g+"configs/c.1"], shell=False, check=True)
+
+    # config keyboard
+    subprocess.run(['mkdir', g+"functions/hid.usb0"], shell=False, check=True)
+    os_echo(g+"functions/hid.usb0/protocol", "1")
+    os_echo(g+"functions/hid.usb0/subclass", "1")
+    os_echo(g+"functions/hid.usb0/report_length", "8")
+    os_echo(g+"functions/hid.usb0/report_desc", "\x05\x01\x09\x06\xa1\x01\x05\x07\x19\xe0\x29\xe7\x15\x00\x25\x01\x75\x01\x95\x08\x81\x02\x95\x01\x75\x08\x81\x03\x95\x05\x75\x01\x05\x08\x19\x01\x29\x05\x91\x02\x95\x01\x75\x03\x91\x03\x95\x06\x75\x08\x15\x00\x25\x65\x05\x07\x19\x00\x29\x65\x81\x00\xc0")
+
+    subprocess.run(['mkdir', g+"configs/c.2"], shell=False, check=True)
+    os_echo(g+"configs/c.2/MaxPower", "250")
+    subprocess.run(['ln', '-s', g+"functions/hid.usb0", g+"configs/c.2"], shell=False, check=True)
+
+    #subprocess.run(['ln', '-s', g+"configs/c.1", g+"os_desc"], shell=False, check=True)
+    subprocess.run(['ls /sys/class/udc/ > '+g+'UDC'], shell=True, check=True)
+
+    # RNDIS OS descriptors
+    #os_echo(g+"os_desc/use", "1")
+    #os_echo(g+"os_desc/b_vendor_code", "0xcd")
+    #os_echo(g+"os_desc/qw_sign", "MSFT100")
+
+    #subprocess.run(['mkdir', g+"functions/rndis.usb0"], shell=False, check=True)
+    #os_echo(g+"functions/rndis.usb0/os_desc/interface.rndis/compatible_id", "RNDIS")
+    #os_echo(g+"functions/rndis.usb0/os_desc/interface.rndis/sub_compatible_id", "5162001")
+
+
+
 #tvservice -p
 # tvservice -e "DMT 82"
 # fbset -g 1920 1080 1920 1080 16
@@ -164,6 +234,14 @@ if __name__ == '__main__':
     GPIO.output(18, GPIO.LOW)
     subprocess.run(['killall', 'fim'], shell=False, check=False)
     subprocess.run(['umount', '/mnt'], shell=False, check=False)
-    subprocess.run(['modprobe', '-r', 'g_mass_storage'], shell=False, check=False)
+    os_echo(g+"UDC", "")
+    time.sleep(0.5)
+    subprocess.run(['rmdir', g+"configs/c.2"], shell=False, check=True)
+    subprocess.run(['rmdir', g+"configs/c.1"], shell=False, check=True)
+    subprocess.run(['rmdir', g+"functions/mass_storage.usb0"], shell=False, check=True)
+    subprocess.run(['rmdir', g+"strings/0x409"], shell=False, check=True)
+    subprocess.run(['rmdir', g], shell=False, check=True)
+    subprocess.run(['modprobe', '-r', 'usb_f_mass_storage'], shell=False, check=False)
+    subprocess.run(['modprobe', '-r', 'libcomposite'], shell=False, check=False)
     sys.exit(0)