Within hours the entire village was calling me William Tell.
When either of us comes into the room, all we have to do is tap our key fobs on a reader mounted by the door, and the room turns on or off what we normally use. The reader by the door reads the presence or absence of the tags.
Disclaimer: I received this book for free through the O’Reilly Blogger program. is a very short “book” on RFID (Radio Frequency Identification), a way to tag and identify objects over varying ranges, and how to use Arduino to create a few interesting RFID projects.
The book assumes that you have some experience with Arduino and micro-controllers (i.e., do you know what a breadboard, jumper wires, and circuits are? We start with a very brief introduction to RFID, follow up with two introductory technical tutorials on Arduino, and end with a fairly simple home automation project: Between my officemate and me, we have dozens of devices drawing power in our office: two laptops, two monitors, four or five lamps, a few hard drives, a soldering iron, Ethernet hubs, speakers, and so forth.
These sites are the online equivalent of walking down the street, finding a rock shaped like a frog and holding it up in the air while yelling for all my neighbours to come out and tell me what they think of my frog shaped rock. Especially Mrs Carter in number three who leaves her bins out all week.
If I did find a rock shaped like a frog, I would throw it at her cat. Why would I want dozens of pictures of lots of love cats? I went away for a week recently and when I got back and checked my email, I had eight hundred and forty three messages.