Ks0120 keyestudio EASY plug Infrared Obstacle Avoidance Sensor

From Keyestudio Wiki
Jump to: navigation, search

EASY plug infrared obstacle avoidance sensor



Infrared obstacle avoidance sensor is equipped with distance adjustment function and is especially designed for wheeled robots. This sensor has strong adaptability to ambient light and is of high precision. It has a pair of infrared transmitting and receiving tube. When infrared ray launched by the transmitting tube encounters an obstacle (its reflector), the infrared ray is reflected to the receiving tube, and the indicator will light up. A robot mounted with the sensor can sense changes in the environment.
Note: this module needs to be used together with EASY plug control board.


  • Interface: Easy plug
  • Working voltage: DC 3.3V-5V
  • Working current: ≥20mA
  • Working temperature: -10℃—+50℃
  • Detection distance: 2-1000px
  • Output signal: TTL voltage
  • Effective Angle: 35°
  • Size: 51*16.5mm
  • Weight: 7g

Connection Diagram


Sample Code

const int sensorPin = 3;     // the number of the sensor pin
const int ledPin =  13;      // the number of the LED pin
int sensorState = 0;         // variable for reading the sensor status
void setup() {
  pinMode(ledPin, OUTPUT);      
  pinMode(sensorPin, INPUT); }
void loop(){
  // read the state of the sensor value:
  sensorState = digitalRead(sensorPin);
  // if it is, the sensorState is HIGH:
  if (sensorState == HIGH) {     
     digitalWrite(ledPin, HIGH);  
  else {
       digitalWrite(ledPin, LOW); 




Buy from

Official Website