Four Channel Line Finder
This four-channel infrared detection tracing sensor is to provide a solutions of multi-purpose infrared detection system for robot chassis,robots and other automated machinery . The infrared transmitter and receiver tubes discrete components to form a probe,and use the LM339 voltage comparator as the core of the device in the control circuit.This system has a variety of detection to meet variety of automation,intelligent small-system applications.
Remove all objects in front of the probe and the probe is not to point in the direction of the sun. Measured the output voltage with a multimeter when connected to the power. At this point the voltage should be about 1 volt.
Use White paper block before the probe. The voltage Should be close to the power supply output voltage.