10pcs/1pc TCRT5000 IR Infrared Reflectance Sensor Obstacle Avoidance Module Tracing Sensor Tracing Module QRE1113 sensor

Product characteristics:

TCRT5000 infrared reflective sensor is adopted, which is a photoelectric sensor integrating emission and reception. It is composed of an infrared light-emitting diode and an NPN infrared photoelectric triode. The detection reflection distance of 1 mm to 25 mm is applicable. The sensor is equipped with an M3 fixed mounting hole. The adjustment direction and fixation are easy to use. The wide voltage LM393 comparator is used. The signal is clean, the waveform is good, and the driving ability is strong, exceeding 15 mA. It can be used for robot obstacle avoidance, robot tracking of white lines or black lines, and can detect black lines in white background, as well as white lines in black background. It is an essential sensor for line finding robots. Pipelining piece counting, pulse data sampling of watt hour meter, paper detection of fax machine shredder and many other occasions.

When VCC (3.3V-5V) and GND are connected, the module power indicator will be on, and the infrared emitting diode of TCRT5000 sensor will continuously emit infrared rays. When the emitted infrared rays are not reflected back or are reflected back but not strong enough, the infrared receiving tube will always be turned off. At this time, the module output terminal is high, and the indicating diode will always be off; When the detected object appears in the detection range, the infrared ray is reflected back with enough intensity, and the infrared receiver tube is saturated. At this time, the output terminal of the module is low level, and the indicator diode is lit. The DO output interface can be directly connected with the IO port of the single chip microcomputer, generally connected with an external interrupt. Analog output AO When the infrared signal of the transmitting tube is reflected and received by the receiving tube, the resistance of the receiving tube will change, which is generally reflected in the form of voltage changes on the circuit, and the processed output results can be obtained after ADC conversion or LM324 and other circuit shaping. The change of resistance originates from the intensity of infrared signal received by the receiver tube, the color (reflectivity) and shape of the reflecting surface and the distance between the receiver tube and the reflecting surface.

Note:

Wiring correctly! Do not reverse the positive and negative connections to burn the electronic components of the board. Raspberry Pi players should set the I/O port of MCU as input mode/receiving mode, otherwise it cannot be used. For other MCUs, or more advanced control boards such as ARM, if I/O ports need to be set to input/output mode, they must be set to input mode/receive mode, otherwise they cannot be used. 51 series microcontroller can be used directly without setting input/output mode.