These scripts will be called by Motion and should be configured to the
respective events in motion.conf

This vDC relays camera events from
Motion (http://www.lavrsen.dk/foswiki/bin/view/Motion/WebHome) into the dS
system as a motion detector binary input.

Events from Motion are received via a socket (currently on port 44044):

echo -n 0 | nc -w 2 127.0.0.1 44044 # motion event stopped
echo -n 1 | nc -w 2 127.0.0.1 44044 # motion event started
echo -n l | nc -w 2 127.0.0.1 44044 # camera lost

hook into motion.conf (probably via a wrapper script) to:
on_event_start
on_event_stop
on_camera_lost