Module Description:

The sensor module has a strong adaptability to ambient light. It has a pair of infrared transmitting and receiving tubes. The transmitting tube emits infrared at a certain frequency. When the detection direction encounters an obstacle (reflection surface), the infrared light is reflected back and received by the receiving tube. After processing by the comparator circuit, the green indicator light will be on, and the signal output interface will output a digital signal (a low-level signal). The detection distance can be adjusted by the potentiometer knob. The effective distance range is 2-30cm, and the operating voltage is 3.3V- 5V. The detection distance of the sensor can be adjusted by a potentiometer and has the characteristics of small interference, easy assembly, and convenient use. It can be widely used in many situations such as robot obstacle avoidance, obstacle avoidance trolley, pipeline counting, and black and white line tracking.

Module Parameter Description:

1. When the module detects the signal from the obstacle in front, the green indicator light on the circuit board lights up the level, and at the same time, the OUT port continues to output a low-level signal. Adjust the potentiometer, adjust the potentiometer clockwise to increase the detection distance; adjust the potentiometer counterclockwise to decrease the detection distance.

2. The sensor actively detects infrared reflection, so the reflectivity and shape of the target are the key to the detection distance. Among them, the black detection distance Z is small, and the white Z is large; the small-area object is small, and the large-area distance is large.

3. The sensor module output port OUT can be directly connected to the IO port of the microcontroller, or it can directly drive a 5V relay; connection method: VCC-VCC; GND-GND; OUT-IO

4. Comparator adopts LM393, stable operation;

5. The module can be powered by a 3-5V DC power supply. When the power is on, the red power indicator is on;

6. with 3mm screw holes, easy to fix and install;

7. Circuit board size: 3.2CM * 1.4CM

8. Each module has already adjusted the threshold comparison voltage through the potentiometer at the time of shipment. In special cases, please do not adjust the potentiometer at will.

Module interface Description:

1. VCC external 3.3V-5V voltage (can be directly connected to 5v microcontroller and 3.3v microcontroller)
2. GND external GND
3. OUT small board digital output interface (0 and 1)

Package:

1 x Obstacle avoidance sensor module