Ohhh ya I forgot, I removed this part
Serial.print("in, ");
Serial.print(cm);
Serial.print("cm");
Serial.println();
And well, I used this code found in the internet, tested it on my maxsonar and it worked
const int anPin = 1;
//variables needed to store values
long anVolt, inches, cm;
int sum=0;//Create sum variable so it can be averaged
int avgrange=60;//Quantity of values to average (sample size)
void setup() {
//This opens up a serial connection to shoot the results back to the PC console
Serial.begin(9600);
}
void loop() {
//MaxSonar Analog reads are known to be very sensitive. See the Arduino forum for more information.
//A simple fix is to average out a sample of n readings to get a more consistant reading.\\
//Even with averaging I still find it to be less accurate than the pw method.\\
//This loop gets 60 reads and averages them
for(int i = 0; i < avgrange ; i++)
{
//Used to read in the analog voltage output that is being sent by the MaxSonar device.
//Scale factor is (Vcc/512) per inch. A 5V supply yields ~9.8mV/in
//Arduino analog pin goes from 0 to 1024, so the value has to be divided by 2 to get the actual inches
anVolt = analogRead(anPin)/2;
sum += anVolt;
delay(10);
}
inches = sum/avgrange;
cm = inches * 2.54;
Serial.print(inches);
Serial.print("in, ");
Serial.print(cm);
Serial.print("cm");
Serial.println();
//reset sample total
sum = 0;
delay(500);
}