===========================
OS/software on Raspberry PI:
===========================

copied rasbian to sddisk:
 dd bs=4M if=./raspian.img of=/dev/sdb

boots with hdmi connections to monitor and keyboard attached.
sudo raspi-config:
  expanded / partition
  added raspberry camera config
  rebooted: systemctl reboot

updated o/s:
  apt-get update
  apt-get upgrade --yes
  rebooted: systemctl reboot

added vnc software and desktop environment to use remote screen casting so
I dont need a monitor - run monitorless raspberry pi:
  apt-get install xorg lxde-core tightvncserver
  test starting/stopping vnc: 
    tightvncserver :1
    tightvncserve -kill 1
Config for starting vncserver:
    ~/.vnc/xstartup:
     lxterminal &
     /etc/X11/Xsession -s LXDE &
    /etc/rc.local:
     su -c'vncserver :1' root
Configure wireless adapter to autoconnect to wifi router:
  cat /etc/wpa_supplicant/wpa_supplicant.conf 
   network={
      ssid="gnet24"
      psk="*your*pass*phrase*"
   }
   (note the lack of spaces, adding spaces caused it to not work)

========================
added to my Linux laptop:
========================
  apt-get install xtightvncviewer
  add to bash: .bashrc:
  alias vncviewer='vncviewer 10.0.0.x::5901'
  (where x is the ipaddr for the rpi)
  vncviewer (to start and connect, after the rpi is boot up)
  cd to dir where the code lives (see below) and type:
  ./photowatch.py

===========
Programming:
===========
  2 pieces of code, a bash script to drive the motors, stepper_moto.sh
  and a python script, photowatch.py, to drive the photos and post the 
  pictures to twitter @{yourtwitteraccount} .