Projects: Burglar alarm

This was the final project for the electronics class, ECE225. The circuit was pretty much given to us. There were a few changes that we had to figure out, just because the components differ with every quarter of classes.

As you can see, this project is more advanced than the light alarm. The burglar alarm uses infrared light to sense the "intruder" and then transmits the signals to the BJTs and buzzer.

I still need to learn to fix the batteries onto the board. However, I'm happy with the placement of the components. I feel that the space on the board was used efficiently.