Maker Faire

The Sibling Intrusion Detector (SID)

Type: Presentation
Program Area: Hacking

Day/Time: Sunday, April 23 2:30 PM (30 minutes)

Day/Time: (30 minutes)

Location: Makeshift Theatre

This talk will show you how to build a simple intrusion detector. When a person breaks the beam from a laser pointer, a digital key-chain camera silently takes their picture.

Inspired by little digital cameras selling for less than $25, I bought one to see if I could hack an external trigger. That turned out to be pretty easy but there was another problem. The darn this kept going into shutdown mode every 30 second to save battery power. I had to “wake” it up by pressing the on/off button.
I said to myself … “Self if you can hack the shutter button why can’t you hack the on/off button.” Not having a good answer for myself I set about hacking that button also.

I ended up using a CMOS 4528 chip because it is even easier to understand than the 555 and I wanted an excuse to play with it.

All of this was done for my 7 year old son of course. I had no fun doing it and would have preferred to be taking the garbage out or mowing the lawn. But hey I’m a good father.

So come to my presentation and I’ll show you how I did it.

Related site:

Presented by

George Albercook

I teach science and technology classes to homeschool students, am the co-founder of Rocks and Robots summer camp and inventor of the FlutterBot educational robot.