Overview

The AMT Raspbi runs our webcam in the space.

Shell scripts

• /root
  • /root/autoprivacy.sh
    Script to loop run ‘privacy_button.sh’, which is a shell script that tests the red button connected to the Pi, and if it is pressed, sends a
    http-request to Dave’s server (somewhere on davr.org) to shut off the webcam for AFAIR 30min. Unknown whether still working/in use.
  • /root/autowebcam.sh
    Shell script that calls ‘webcam’ in a loop. Some simple sed magic alternates between /dev/video0 and /dev/video1, supposedly because the webcam comes up randomly as either one on the Pi? Dave?
• /home/pi
  • /home/pi/autotemp.sh
    Script to loop run ‘/home/tmp/temp.py’. Supposedly shielding against ‘temp.py’ crashing?
  • /home/pi/temp.py
    Does temperature readings and encode them into HTTP request to davr.org. Repeats the reading. Is being run as root.
• /etc
  • /etc/rc.local
    The main start script that starts all the other scripts, for the webcam, the temperature reading, the privacy button, the sign bot and the DHCP scanner. All these ‘daemons’/services are being run as root.

One can attach to the screen sessions with ‘screen -r ‘, as root. Just ‘screen -r’ should list the sessions. The sessions are named with their respective purpose.

It looks like the privacy button script is disabled at the moment.