5 Channel Tracking Sensor Tracking Module Infrared Sensor is based on the infrared reflection sensor, it is often used to make tracking smart cars.
The infrared emitting diode of the sensor continuously emits infrared rays.
When the emitted infrared rays are reflected by the object, they are received by the infrared receiver and output analogue values.
The output analogue value is related to the object distance and the colour of the object.
The position of the tracking line is judged by calculating the analogue value of the five outputs.