That's pretty sick. This is actually much simpler than it seems. It's just a microcontroller hooked up to the switch (just two wires). The version shown in the

That's pretty sick. This is actually much simpler than it seems. It's just a microcontroller hooked up to the switch (just two wires). The version shown in the video costed much more than it needed to only because we didn't know what we were doing at the time. The whole package can be done wirelessly for ~$35. The benefit of this method is the expandability factor. It can be hooked up to almost anything. The text message backbone is just a postfix mail server running incron which starts a bash script to parse the message.