Picture Taking:
===============

We use a raspberry pi camera (8 megapixel) in the main capsule attached to the 
system controller's camera interface to take still pictures in flight. 

One enhancement we want to make is to increase the frequency of image capture 
and possibly make it variable and related to the speed of travel of the capsule.

TODO: add the cron job entry as an example.

SCP file transfer command:

::

    scp -r pi@smartbox3642.local:~/Pictures/ .


Pictur taling script, called by a cron job every minute:

::

    #!/bin/bash

    DATE_TIME=`date +%Y%m%d%H%M%S`

    PICTURE_NAME='/home/pi/Pictures/'$DATE_TIME'.jpg'
    LOG_FILE='/home/pi/raspistill_picture.log'

    echo 'Taking picture with raspistill, image name: '$PICTURE_NAME >> $LOG_FILE

    raspistill -v -o $PICTURE_NAME

    echo 'raspstill exit code: '$? >> $LOG_FILE