Arduino Based Wireless Intrusion Detection Using IR Sensor and GSM Intrusion Detection Systems (IDS) strive to catch computer system intrusion & utilize by any garnering and analyzing data.

The part list consists of one Arduino, two resistors, and one IR emitter. That’s right, an emitter. When an LED (IR or otherwise) is reverse biased it can act as a light sensor.

Self-balancing Arduino Does It Without An IMU. 15 Comments . by: Mike Szczys. September 26, 2013. ... The black PCB seen to the right of the robot is an IR reflectance sensor.