Project:Door sensor

Door Sensor

To tell the state of the (front) door without having to physically be there/see it. More generically, a binary input that is on the network.

You can create Ethernet loop back devices by shorting a couple of pairs on Ethernet cables as per http://erikugel.wordpress.com/2011/09/14/making-an-ethernet-loopback-adapder/
By opening and closing one pair you can bring a network interface up/down
A micro switch has been mounted into the door frame at the top and brown/white cable run to choc blocks, and then a network cable run back to Cisco2 switch, port 42

Cisco port need some configuring:

interface GigabitEthernet1/42
no keepalive
speed 100
duplex full

This has nothing to do with:

?doorstatus on IRC will responsd with "Door closed" or "Door open"

?doorsnmp will do a more advanced check, with SNMP polling and respond thusly: Door is closed (last movement was on 18/11/2012 at 20:29:29)

The ?doorsnmp (/usr/share/irccat/doorsnmp.py on babbage) code isn't the greatest, I'm sure someone can improve it.

Tidy up the script that tells IRC the status. At the moment it is the quickest dirtiest python you will ever see
Add more doors! - Build a complete building management system that has the status of all infrastructure
Log/graph it in Cacti?