เซนเซอร์วัดระยะห่างด้วย infrared 4-30cm GP2Y0A41SK0F (A41) Infrared distance measuring sensor 0A41SK

     Infrared proximity sensor made by Sharp. Part # GP2Y0A41SK0F has an analog output that varies from 3.1V at 4cm to 0.3V at 30cm with a supply voltage between 4.5 and 5.5VDC. The sensor has a Japanese Solderless Terminal (JST) Connector. We recommend purchasing the related pigtail below or soldering wires directly to the back of the module.

Documents:

• Datasheet GP2Y0A41SK0F

// Sharp IR GP2Y0A41SK0F Distance Test
// http://tinkcore.com/sharp-ir-gp2y0a41-skf/

#define sensor A0 // Sharp IR GP2Y0A41SK0F (4-30cm, analog)

void setup() {
 Serial.begin(9600); // start the serial port
}

void loop() {
 
 // 5v
 float volts = analogRead(sensor)*0.0048828125;  // value from sensor * (5/1024)
 int distance = 13*pow(volts, -1); // worked out from datasheet graph
 delay(1000); // slow down serial port 
 
 if (distance <= 30){
   Serial.println(distance);   // print the distance
 }
}