With strong reflectance, the output voltage tends towards GND; with weak reflectance, it tends towards Vcc. The resistor wired in series with the infrared LED sets the operating current to a safe ...

When an object comes within the sensor's range, the amount of reflected light changes, causing the sensor’s output to switch state. Arduino Processing: The Arduino reads the output from the IR sensor.

In this project, we built a line-following robot using simple components like Arduino and l298n motor driver. Our team developed the control algorithm, integrated the sensors, designed the circuit, ...