MH-Sensor-Series Flying-Fish not returning proper values

Projects General Guidance
1

When i connect my IR sensor to a lcd screen and a serial monitor the IR sensor doesnt display the proper values, whatever i do the values just jump around, does anybody else have this problem and how can it be solved?

i use a mega arduino board, a 16x2 lcd-screen and an MH-sensor-series Flying-Fish.

This is the basic code i used to test the IR sensor:

// include the library code:
#include <LiquidCrystal.h>

// initialize the library by associating any needed LCD interface pin with the arduino pin number it is connected to
const int rs = 13, e = 12, d4 = 11, d5 = 10, d6 = 9, d7 = 8;
LiquidCrystal lcd(rs, e, d4, d5, d6, d7);

void setup() {                
 // set up the LCD's number of columns and rows:
  lcd.begin(16, 2); 
  //
  Serial.begin(9600);
}


void loop() {
  //set the position where the lcd writes
  lcd.setCursor(0, 1);
  //short delay so that the lcdscreen is readable
  delay(500);
  //clear the lcd of the previous value
  lcd.clear();
  //print the value pulled from the IR sensor on the lcd
  lcd.print(analogRead(A0));
  //print the value pulled from the IR sensor on the serial monitor
  Serial.println(analogRead(A0));
};

here is an example of the serial monitor output:

15:30:26.275 -> 307

15:30:26.974 -> 435

15:30:27.396 -> 644

15:30:27.856 -> 476

15:30:28.286 -> 353

15:30:28.798 -> 567

15:30:29.316 -> 687

15:30:29.814 -> 495

15:30:30.284 -> 381

15:30:30.805 -> 642

15:30:31.313 -> 521

15:30:31.832 -> 145

2

If you have 3-pin sensor, it has digital output only (adjustable threshold with pot). And you can't measure distance with that.

3

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