Hi there,
it's me again.

I tried some things which read in the arduino froum (http://forum.arduino.cc/index.php?topic=153700.0) without any good result.
I also get a new sensor and there is still no change of it's behaviour.

I read in the forum that it could be a sensor that uses RX/TX to send its information.
Does any one know something about that?

OK. this threat (http://forum.arduino.cc/index.php?topic=153700.0) is very usefull. I will try out some hints and tell you my result.

Thank to all for now.

@hek Thanks. I will check out this and will tell you the result.

@hek DYP-ME007Y

@Moshe Livne I order the HC-SR04 Module as well to make sure where the problem is.
I also order aother Arduino Nano.

Hi all,

I am really wondering whats going wrong here. I made some changes to the code and now I get this result:

Ping: cm
Ping: 0cm
Ping: 0cm
Ping: 0cm
Ping: 2cm
Ping: 0cm
Ping: 0cm
Ping: 0cm
Ping: 1cm
Ping: 0cm
Ping: 0cm
Ping: 0cm
Ping: 0cm
Ping: 0cm
Ping: 0cm
Ping: 16cm
Ping: 0cm
Ping: 0cm
Ping: 0cm

The distance between sensor and wall is about 75cm.

I took back any chagnes I made. Without any effect.
I try now use the NewPing version 1.6 library. No effect.

Current code:

#include <NewPing.h>

#define TRIGGER_PIN  6  // Arduino pin tied to trigger pin on the ultrasonic sensor.
#define ECHO_PIN     5  // Arduino pin tied to echo pin on the ultrasonic sensor.
#define MAX_DISTANCE 500 // Maximum distance we want to ping for (in centimeters). Maximum sensor distance is rated at 400-500cm.

NewPing sonar(TRIGGER_PIN, ECHO_PIN, MAX_DISTANCE); // NewPing setup of pins and maximum distance.

void setup() {
  Serial.begin(115200); // Open serial monitor at 115200 baud to see ping results.
}

void loop() {
  delay(2000);                    // Wait 50ms between pings (about 20 pings/sec). 29ms should be the shortest delay between pings.
  Serial.print("Ping: ");
  Serial.print(sonar.ping_cm()); // Send ping, get distance in cm and print result (0 = outside set distance range)
  Serial.println("cm");
}

I there any way to check I the hardware is bad or may have some defects?

Hi Moshe Livne,

I disconnect the radio device and keep the US-sensor connected and use the following code.

#include <NewPing.h>

#define TRIGGER_PIN  6  // Arduino pin tied to trigger pin on the ultrasonic sensor.
#define ECHO_PIN     5  // Arduino pin tied to echo pin on the ultrasonic sensor.
#define MAX_DISTANCE 500 // Maximum distance we want to ping for (in centimeters). Maximum sensor distance is rated at 400-500cm.

NewPing sonar(TRIGGER_PIN, ECHO_PIN, MAX_DISTANCE); // NewPing setup of pins and maximum distance.

void setup() {
  Serial.begin(115200); // Open serial monitor at 115200 baud to see ping results.
}

void loop() {
  delay(500);                      // Wait 50ms between pings (about 20 pings/sec). 29ms should be the shortest delay between pings.
  unsigned int uS = sonar.ping(); // Send ping, get ping time in microseconds (uS).
  Serial.print("Ping: ");
  Serial.print(uS / US_ROUNDTRIP_CM); // Convert ping time to distance in cm and print result (0 = outside set distance range)
  Serial.println("cm");
}

I got the following results:

Ping: 306cm
Ping: 0cm
Ping: 308cm
Ping: 0cm
Ping: 308cm
Ping: 0cm
Ping: 308cm
Ping: 0cm
Ping: 307cm
Ping: 0cm
Ping: 307cm
Ping: 0cm
Ping: 307cm
Ping: 0cm
Ping: 307cm
Ping: 0cm
Ping: 307cm
Ping: 0cm
Ping: 307cm
Ping: 0cm
Ping: 307cm
Ping: 0cm
Ping: 307cm
Ping: 0cm
Ping: 307cm
Ping: 0cm
Ping: 307cm
Ping: 0cm
Ping: 307cm
Ping: 0cm
Ping: 307cm
Ping: 0cm
Ping: 307cm
Ping: 0cm
Ping: 307cm
Ping: 0cm
Ping: 307cm
Ping: 0cm
Ping: 307cm
Ping: 0cm
Ping: 307cm
Ping: 0cm
Ping: 307cm
Ping: 0cm
Ping: 307cm
Ping: 0cm
Ping: 307cm
Ping: 0cm
Ping: 307cm
Ping: 0cm
Ping: 307cm

No.
It is powerd with a 5V and 2A powersupply.

Hi BulldogLowell,

sorry for the delay I was over 2 weeks on vacation. but now I am back.

I using the code from the distance sensore example (http://www.mysensors.org/build/distance).

#include <SPI.h>
#include <MySensor.h>  
#include <NewPing.h>

#define CHILD_ID 1
#define TRIGGER_PIN  6  // Arduino pin tied to trigger pin on the ultrasonic sensor.
#define ECHO_PIN     5  // Arduino pin tied to echo pin on the ultrasonic sensor.
#define MAX_DISTANCE 300 // Maximum distance we want to ping for (in centimeters). Maximum sensor distance is rated at 400-500cm.
unsigned long SLEEP_TIME = 5000; // Sleep time between reads (in milliseconds)

MySensor gw;
NewPing sonar(TRIGGER_PIN, ECHO_PIN, MAX_DISTANCE); // NewPing setup of pins and maximum distance.
MyMessage msg(CHILD_ID, V_DISTANCE);
int lastDist;
boolean metric = true; 

void setup()  
{ 
  gw.begin();

  // Send the sketch version information to the gateway and Controller
  gw.sendSketchInfo("Distance Sensor", "1.0");

  // Register all sensors to gw (they will be created as child devices)
  gw.present(CHILD_ID, S_DISTANCE);
  boolean metric = gw.getConfig().isMetric;
}

void loop()      
{     
  int dist = metric?sonar.ping_cm():sonar.ping_in();
  Serial.print("Ping: ");
  Serial.print(dist); // Convert ping time to distance in cm and print result (0 = outside set distance range)
  Serial.println(metric?" cm":" in");

  if (dist != lastDist) {
      gw.send(msg.set(dist));
      lastDist = dist;
  }

  gw.sleep(SLEEP_TIME);
}

Oh, I forgot to mention that I use a DYP-ME007Y Ultrasonic Sensor Module.

Th