Alberto Madrigali

i'm trying to read some values from an ultrasonic sensor connected to an Arduino Uno board. Buuuut when i use serial object in MAX, those values doesn't correspond with the real distance displayed in Arduino serial monitor. 

Hello everyone, 
i'm trying to read some values from an ultrasonic sensor connected to an Arduino Uno board. Buuuut when i use serial object in MAX, those values doesn't correspond with the real distance displayed in Arduino serial monitor. 
Here's the sketch: 

const int trigPin = 9;
const int echoPin = 10;

long tempo;
int distanza;
void setup() {
pinMode(trigPin, OUTPUT); 
pinMode(echoPin, INPUT);
Serial.begin(9600);
}
void loop() {

digitalWrite(trigPin, LOW);
delayMicroseconds(2);
digitalWrite(trigPin, HIGH);
delayMicroseconds(5);
digitalWrite(trigPin, LOW);
  tempo = pulseIn(echoPin, HIGH);  
  distanza= tempo*0.034/2; 
  Serial.println(distanza);
}

Hello everyone, 
i'm trying to read some values from an ultrasonic sensor connected to an Arduino Uno board. Buuuut when i use serial object

wrong-values-reading-arduino

Read_port2.maxpat

This is the patch. I don't understand if those datas must be interpretated in some way or they're just wrong

Thanks for replying! 
This is the patch. I don't understand if those datas must be interpretated in some way or they're just wrong

sorry that I'm short of explanation, am on the run.

Wrong values reading Arduino