Arduino KY-032 Obstacle avoidance sensor modules Infrared Obstacle Avoidance Sensor returns a signal when it detects an object in range. The range of the sensor is around 2-40 cm distance. It operates at 3.5 to 5 volts at around 20 milliamps. The Obstacle Avoidance Sensors usually come in two types – with 3 and 4 pins. This is the  4 pin version Sensor Module and has an optional Enable pin. An infrared obstacle avoidance sensor is designed to detect obstacles or the difference in reflective services. This sensor is made with black and white lines tracing the car ran without a black line on white paper, available in concrete The yellow complex environment such as the black line patrol track. As long as the black line around the slightly lighter color than black can, eliminating the traditional moves so that environmental layout easier. Frequency adjustment potentiometer is used to adjust the carrier frequency of the infrared emission tube because the integration receiver 38KHZ in particular when the carrier frequency is the most sensitive. The 502 resistors clockwise transferred do (that is, the launch tube at maximum brightness), and then at a white wall tone 103 resistance, has been transferred to the sensing distance is the farthest so far so that the sensor will work in the best state
Features of Smart Car Infrared Obstacle Avoidance Sensor Module:
Easy to assemble and use
Onboard detection indication
The effective distance range of 2cm to 40cm
A preset knob to fine-tune distance range
There is an obstacle, the green indicator light on the circuit board.
Anti-jamming capability
Specifications of Smart Car Infrared Obstacle Avoidance Sensor Module:
Model No :  IR-08H V02.45.DC
Working voltage: DC 3.3V-5V
Working current: 20mA
Operating temperature: -10°C to 50°C
detection distance:2-40cm
IO Interface: 4-wire interfaces (- / / S / EN)
Output signal: TTL level (low level there is an obstacle, no obstacle high)
Adjustment: adjust multi-turn resistance
Effective angle: 35 °
Size: 28mmX 23mm