We have a collection of almost 500+ Arduino projects with Code, Circuit Diagram, and detailed explanations completely free for everyone to build and learn on their own. The IR sensor has a 3-pin ...

A simple breadboard based circuit diagram ... define SENSOR_1_PIN 2 // Pin for first IR sensor (INT0) #define SENSOR_2_PIN 3 // Pin for second IR sensor (INT1) This line defines “SENSOR_1_PIN” as pin ...

The microcontroller-based concept was chosen because I wanted to scale the sensor system later to suit other applications. Here is the diagram of my Arduino infrared close ... the D13 signal output ...