It works great the first 45cm then slowly loses accuracy. Here are some of the sample codes that I have tried
#include <DistanceGP2Y0A21YK.h>
DistanceGP2Y0A21YK Dist;
int distance;
void setup()
{
Serial.begin(9600);
Dist.begin(A0);
}
void loop()
{
distance = Dist.getDistanceCentimeter();
Serial.print("\nDistance in centimers: ");
Serial.print(distance);
delay(500); //make it readable
}
int i;
int val;
int redpin=0;
void setup() {
pinMode(redpin,OUTPUT);
Serial.begin(9600);
}
void loop() {
i=analogRead(redpin);
val=(6762/(i-9))-4;
Serial.println(val);
}
I have also just tried reading the raw analog values that come out using a ruler, but as the distance stays fixed the value will go from 250 to 230 to 255 and all over.