bell_crontab

#Crontab -e    
57 07 * * 1-5 python /home/pi/Documents/py_ball.py
55 08 * * 1-5 python /home/pi/Documents/py_ball.py
02 09 * * 1-5 python /home/pi/Documents/py_ball.py
00 10 * * 1-5 python /home/pi/Documents/py_ball.py
02 10 * * 1-5 python /home/pi/Documents/py_ball.py
00 11 * * 1-5 python /home/pi/Documents/py_ball.py

45 11 * * 1-5 python /home/pi/Documents/py_ball.py
35 12 * * 1-5 python /home/pi/Documents/py_ball.py
40 12 * * 1-5 python /home/pi/Documents/py_ball.py
30 13 * * 1-5 python /home/pi/Documents/py_ball.py

57 13 * * 4-5 python /home/pi/Documents/py_ball.py
55 14 * * 4-5 python /home/pi/Documents/py_ball.py
57 14 * * 4-5 python /home/pi/Documents/py_ball.py
55 15 * * 4-5 python /home/pi/Documents/py_ball.py
00 16 * * 4-5 python /home/pi/Documents/py_ball.py

00 17 * * 1-5 python /home/pi/Documents/py_ball.py
55 17 * * 1-5 python /home/pi/Documents/py_ball.py
05 18 * * 1-5 python /home/pi/Documents/py_ball.py
19 07 * * 1-5 python /home/pi/Documents/py_ball.py

raspberrypi.sh

# crontab @reboot deos not work to rund this command so
sudo nano /etc/profile # this make available to all users. instead of $HOME/.profile
# add following line the last
setxkbmap -option grp:switch,grp:alt_shift_toggle,grp_led:scroll us,kh

#for ubuntu high security of vnc just do this command
gsettings set org.gnome.Vino require-encryption false

#Pinet bash access
sudo ltsp-chroot --arch armhf
# after make change need to compress image 
ltsp-update-image /opt/ltsp/armhf
# Pinet is multi user environment so make sure the change is available to all user when do. /etc or /etc/skel is for that. 

raspberrypi_auto_bell.py

from time import sleep
import RPi.GPIO as io
io.setwarnings(False)
io.setmode (io.BOARD)
io.setup(13,io.OUT)
myint = 0;

while (myint == 0):
        myint = 1
        # ring 1
        io.output(13,1)
        sleep(0.5)
        io.output(13,0)
        sleep(0.5)
        # ring 2
        io.output(13,1)
        sleep(0.5)
        io.output(13,0)
        sleep(0.5)