1. Components Needed

• Infrared Remote Controller & Receiver

This is a very rough but handy Infrared development kit. Theoretically kit test distance 5-8 meters. Receiver uses HX1838, working with power indicator, can receive any remote 38K frequency encoded data.

• Photo-resistor

The type I use is GM5539. In my circuit building, I will connect this photo-resistor with a 10k Ohm resistor as the following picture, in which R1 is the 10k Ohm resistor and R2 is the photo-resistor. By the equation below, we can tell that when the photo-resistor is exposed to light, its resistance decreases and the voltage reading will be higher. When light is blocked, the resistance of the photo-resistor increases and so the voltage reading will be lower. I will apply this voltage reading on photo-resistor to be the parameter of my anti-theft function code.

• Buzzer

Once the alarm is raised, the buzzer will sound as well as an LED will blink.

*Arduino Uno R3

All the staff will be built on Arduino Uno R3 board and operated by using Arduino code.

2. Price List(in dollars) and Purchase Links

1. IR-remote kit: 7.99 IR-remote kit
2. Photo-resistor: 6.99 Photo-resistor
3. Arduino Uno R3: 16.75
4. Sunfounder Project Super Starter Kit(including buzzer, LED, breadboard, 10k Ohm & 220 Ohm resistors and wires): 35.99 Starter Kit