diff --git a/arduino/src/main.ino b/arduino/src/main.ino
index b0f3c23..b328b9c 100644
--- a/arduino/src/main.ino
+++ b/arduino/src/main.ino
@@ -417,14 +417,12 @@ void setupPins(){
 	digitalWrite(pin_rpi_pos, HIGH);
 
 	//inicjalizacja przerwan PCINT idacych od RPi
-	/*
     pinMode(pin_rpi_win4, INPUT); //nie moze byc pullup, bo podciagalby do 5V - te piny trzyma w stanie wysokim RPi
 	enableInterrupt(pin_rpi_win4, win4ISR, CHANGE);
 	pinMode(pin_rpi_win9, INPUT);
 	enableInterrupt(pin_rpi_win9, win9ISR, CHANGE);
 	pinMode(pin_rpi_win10, INPUT);
 	enableInterrupt(pin_rpi_win10, win10ISR, CHANGE);
-    */
 
 	//piny slajdow
 	pinMode(pin_rpi_slide1, OUTPUT);
diff --git a/raspi/mgmt/playbook.yml b/raspi/mgmt/playbook.yml
index 08a8bea..d28ff27 100644
--- a/raspi/mgmt/playbook.yml
+++ b/raspi/mgmt/playbook.yml
@@ -5,8 +5,10 @@
     - synchronize: src=../.. dest=/home/pi/sejf
     - synchronize: src="custom/{{ inventory_hostname }}" dest=/home/pi/sejf/raspi
       ignore_errors: yes
-    - file: path=/etc/xdg/autostart/pprompt.desktop state=absent
+    - copy: src=sejf.service dest=/etc/systemd/system/sejf.service
+    - systemd: name=sejf state=restarted enabled=yes
     - copy: src=autostart dest=/home/pi/.config/lxsession/LXDE-pi/autostart
-    - copy: src=sejf.desktop dest=/etc/xdg/autostart
     - apt: name=python-flask state=present
     - apt: name=avrdude state=present
+    - file: path=/etc/xdg/autostart/pprompt.desktop state=absent
+    - file: path=/etc/xdg/autostart/sejf.desktop state=absent
diff --git a/raspi/mgmt/sejf.desktop b/raspi/mgmt/sejf.desktop
deleted file mode 100755
index 7874fc6..0000000
--- a/raspi/mgmt/sejf.desktop
+++ /dev/null
@@ -1,7 +0,0 @@
-[Desktop Entry]
-Type=Application
-Name=sejf
-NoDisplay=true
-Exec=/home/pi/sejf/raspi/run.sh
-Terminal=true
-NotShowIn=GNOME;KDE;XFCE;
diff --git a/raspi/mgmt/sejf.service b/raspi/mgmt/sejf.service
new file mode 100755
index 0000000..dc0b6a0
--- /dev/null
+++ b/raspi/mgmt/sejf.service
@@ -0,0 +1,13 @@
+[Unit]
+Description=sejf
+After=lightdm.service
+
+[Service]
+ExecStart=/usr/bin/python /home/pi/sejf/raspi/pySejf.py
+Restart=always
+Environment=DISPLAY=:0
+User=pi
+KillSignal=SIGKILL
+
+[Install]
+WantedBy=default.target
diff --git a/raspi/pySejf.py b/raspi/pySejf.py
index 0cb5075..e63317d 100644
--- a/raspi/pySejf.py
+++ b/raspi/pySejf.py
@@ -97,12 +97,28 @@ class SnakeSlide(Slide):
     def render(self, screen):
         self.clock.tick(TICK_SNAKE)
 
+        if not self.finished:
+            self.interact()
+
+        #rysuj tlo
+        screen.fill(WHITE)
+        screen.blit(IMG_SNAKE, (0, 0))
+
+        for i in range(0, len(self.xs)):
+            screen.blit(self.img, (self.xs[i], self.ys[i]))
+
+        screen.blit(self.appleimage, self.applepos);
+        t=self.f.render(str(self.score), True, (0, 0, 0));
+        screen.blit(t, (10, 10));
+
         if self.finished:
             f=FONT_SNAKE
             t=f.render(MSG_SNAKE+str(self.score), True, (0, 0, 0))
             screen.blit(t, (10, 270))
             return
 
+    def interact(self):
+        # snek collision
         i = len(self.xs)-1
         while i >= 2:
             if collide(self.xs[0], self.xs[i], self.ys[0], self.ys[i], 20, 20, 20, 20):
@@ -110,6 +126,8 @@ class SnakeSlide(Slide):
                 return
 
             i-= 1
+
+        # Apple collision
         if collide(self.xs[0], self.applepos[0], self.ys[0], self.applepos[1], 20, 10, 20, 10):
             self.score+=1
             for i in range(0, SNAKE_ADDSIZE):
@@ -129,22 +147,12 @@ class SnakeSlide(Slide):
         elif self.dirs==2:self.ys[0] -= 20
         elif self.dirs==3:self.xs[0] -= 20
 
-        #rysuj tlo
-        screen.fill(WHITE)
-        screen.blit(IMG_SNAKE, (0, 0))
         print("drawing snake...")
         if(self.score > SNAKE_SCORE):
-            self.finish()
             signalWin(4)
+            self.finish()
             return
 
-        for i in range(0, len(self.xs)):
-            screen.blit(self.img, (self.xs[i], self.ys[i]))
-
-        screen.blit(self.appleimage, self.applepos);
-        t=self.f.render(str(self.score), True, (0, 0, 0));
-        screen.blit(t, (10, 10));
-
 pygame.init()
 pygame.mixer.init()
 
@@ -355,6 +363,7 @@ class ReceiveThread(threading.Thread):
                 logging.exception('Receiver failed')
                 time.sleep(0.5)
 
+ser = None
 
 for c in ['/dev/ttyUSB0', '/dev/ttyACM0']:
     try:
diff --git a/raspi/run.sh b/raspi/run.sh
deleted file mode 100755
index fb0f19e..0000000
--- a/raspi/run.sh
+++ /dev/null
@@ -1,13 +0,0 @@
-#!/bin/bash
-
-# Simple SUPERVISOR script to keep pySejf running...
-(
-flock -n 9 || exit 1
-
-cd $(dirname $(realpath $0))
-
-while true; do
-    python pySejf.py 2>&1 | tee -a /tmp/pysejf.log
-    sleep 0.5;
-done
-) 9>/var/lock/pysejf