SENSOR PING))) QUESTION

I GOT A PING))) SENSOR YESTERDAY
NOW I KNOW HOW DOES IT WORK
BUT I NOW, I NEED TO KNOW WHAT SHOULD I DO, TO TURN ON AN LED OR MOTOR WHEN THE SENSOR REACHES IN THE MIDDLE OF TWO NUMBERS.

WHAT SHOULD I CHANGE IN THE CODE

IF YOU DONT REALLY UNDERSTAND WHAT I MEAN, POST A COMMENT

where is the code?

/* Ping))) Sensor

This sketch reads a PING))) ultrasonic rangefinder and returns the
distance to the closest object in range. To do this, it sends a pulse
to the sensor to initiate a reading, then listens for a pulse
to return. The length of the returning pulse is proportional to
the distance of the object from the sensor.

The circuit:

  • +V connection of the PING))) attached to +5V
  • GND connection of the PING))) attached to ground
  • SIG connection of the PING))) attached to digital pin 7

created 3 Nov 2008
by David A. Mellis
modified 30 Jun 2009
by Tom Igoe

This example code is in the public domain.

*/

// this constant won't change. It's the pin number
// of the sensor's output:
const int pingPin = 7;

void setup() {
// initialize serial communication:
Serial.begin(9600);
}

void loop()
{
// establish variables for duration of the ping,
// and the distance result in inches and centimeters:
long duration, inches, cm;

// The PING))) is triggered by a HIGH pulse of 2 or more microseconds.
// Give a short LOW pulse beforehand to ensure a clean HIGH pulse:
pinMode(pingPin, OUTPUT);
digitalWrite(pingPin, LOW);
delayMicroseconds(2);
digitalWrite(pingPin, HIGH);
delayMicroseconds(5);
digitalWrite(pingPin, LOW);

// The same pin is used to read the signal from the PING))): a HIGH
// pulse whose duration is the time (in microseconds) from the sending
// of the ping to the reception of its echo off of an object.
pinMode(pingPin, INPUT);
duration = pulseIn(pingPin, HIGH);

// convert the time into a distance
inches = microsecondsToInches(duration);
cm = microsecondsToCentimeters(duration);

Serial.print(inches);
Serial.print("in, ");
Serial.print(cm);
Serial.print("cm");
Serial.println();

delay(100);
}

long microsecondsToInches(long microseconds)
{
// According to Parallax's datasheet for the PING))), there are
// 73.746 microseconds per inch (i.e. sound travels at 1130 feet per
// second). This gives the distance travelled by the ping, outbound
// and return, so we divide by 2 to get the distance of the obstacle.
// See: http://www.parallax.com/dl/docs/prod/acc/28015-PING-v1.3.pdf
return microseconds / 74 / 2;
}

long microsecondsToCentimeters(long microseconds)
{
// The speed of sound is 340 m/s or 29 microseconds per centimeter.
// The ping travels out and back, so to find the distance of the
// object we take half of the distance travelled.
return microseconds / 29 / 2;
}

if (cm > minDistance && cm < maxDistance){
//turn led on
}

@OP: Please don't shout, and when posting code, use the # icon on the toolbar to put the code into a code box.

but can you put this somewhere on the code and post it so its gonna be easy for me to understand

and then i will try it

it's easy, and i won't code for you, unless you pay me :grin:

because im a 13 years old beginner.
and i really need help so that i will be able to make a robot.

and can a little part of code can be moved anywhere else and will it still work? :fearful:

ok, it's not working because of the cm or inche. :0
is there something else that can replace the cm or inche :relaxed:

Furlongs? What you have written doesn't make sense. Could you tell us what you think the problem is?

i think the problem is that my arduino uno cant read the cm and inches.i just need help for something that can replace the cm and inches

what i have written is:

/* Ping))) Sensor

This sketch reads a PING))) ultrasonic rangefinder and returns the
distance to the closest object in range. To do this, it sends a pulse
to the sensor to initiate a reading, then listens for a pulse
to return. The length of the returning pulse is proportional to
the distance of the object from the sensor.

The circuit:

  • +V connection of the PING))) attached to +5V
  • GND connection of the PING))) attached to ground
  • SIG connection of the PING))) attached to digital pin 7

created 3 Nov 2008
by David A. Mellis
modified 30 Jun 2009
by Tom Igoe

This example code is in the public domain.

*/

// this constant won't change. It's the pin number
// of the sensor's output:
const int pingPin = 7;

void setup() {
pinMode (13,OUTPUT);
Serial.begin(9600);
}

void loop()
{
// establish variables for duration of the ping,
// and the distance result in inches and centimeters:
long duration, inches, cm;

// The PING))) is triggered by a HIGH pulse of 2 or more microseconds.
// Give a short LOW pulse beforehand to ensure a clean HIGH pulse:
pinMode(pingPin, OUTPUT);
digitalWrite(pingPin, LOW);
delayMicroseconds(2);
digitalWrite(pingPin, HIGH);
delayMicroseconds(5);
digitalWrite(pingPin, LOW);

// The same pin is used to read the signal from the PING))): a HIGH
// pulse whose duration is the time (in microseconds) from the sending
// of the ping to the reception of its echo off of an object.
pinMode(pingPin, INPUT);
duration = pulseIn(pingPin, HIGH);

// convert the time into a distance
inches = microsecondsToInches(duration);
cm = microsecondsToCentimeters(duration);

Serial.print(inches);
Serial.print("in, ");
Serial.print(cm);
Serial.print("cm");
Serial.println();

delay(100);
}

long microsecondsToInches(long microseconds)
{
// According to Parallax's datasheet for the PING))), there are
// 73.746 microseconds per inch (i.e. sound travels at 1130 feet per
// second). This gives the distance travelled by the ping, outbound
// and return, so we divide by 2 to get the distance of the obstacle.
// See: http://www.parallax.com/dl/docs/prod/acc/28015-PING-v1.3.pdf
return microseconds / 74 / 2;
}

long microsecondsToCentimeters(long microseconds)
{
if ( pingPin,_______________ )
{
digitalWrite(13,HIGH);

}
else
{
digitalWrite(13,LOW);
}
// The speed of sound is 340 m/s or 29 microseconds per centimeter.
// The ping travels out and back, so to find the distance of the
// object we take half of the distance travelled.
return microseconds / 29 / 2;
}

Please back to your last post,click on "modify", then highlight the code, then click on the # icon on the editor's toolbar.
Then click on "save".

i think the problem is that my arduino uno cant read the cm and inches

Well of course it can't.

/* Ping))) Sensor

This sketch reads a PING))) ultrasonic rangefinder and returns the
distance to the closest object in range. To do this, it sends a pulse
to the sensor to initiate a reading, then listens for a pulse
to return. The length of the returning pulse is proportional to
the distance of the object from the sensor.

The circuit:

  • +V connection of the PING))) attached to +5V
  • GND connection of the PING))) attached to ground
  • SIG connection of the PING))) attached to digital pin 7

created 3 Nov 2008
by David A. Mellis
modified 30 Jun 2009
by Tom Igoe

This example code is in the public domain.

*/

// this constant won't change. It's the pin number
// of the sensor's output:
const int pingPin = 7;

void setup() {
pinMode (13,OUTPUT);
Serial.begin(9600);
}

void loop()
{
// establish variables for duration of the ping,
// and the distance result in inches and centimeters:
long duration, inches, cm;

// The PING))) is triggered by a HIGH pulse of 2 or more microseconds.
// Give a short LOW pulse beforehand to ensure a clean HIGH pulse:
pinMode(pingPin, OUTPUT);
digitalWrite(pingPin, LOW);
delayMicroseconds(2);
digitalWrite(pingPin, HIGH);
delayMicroseconds(5);
digitalWrite(pingPin, LOW);

// The same pin is used to read the signal from the PING))): a HIGH
// pulse whose duration is the time (in microseconds) from the sending
// of the ping to the reception of its echo off of an object.
pinMode(pingPin, INPUT);
duration = pulseIn(pingPin, HIGH);

// convert the time into a distance
inches = microsecondsToInches(duration);
cm = microsecondsToCentimeters(duration);

Serial.print(inches);
Serial.print("in, ");
Serial.print(cm);
Serial.print("cm");
Serial.println();

delay(100);
}

long microsecondsToInches(long microseconds)
{
// According to Parallax's datasheet for the PING))), there are
// 73.746 microseconds per inch (i.e. sound travels at 1130 feet per
// second). This gives the distance travelled by the ping, outbound
// and return, so we divide by 2 to get the distance of the obstacle.
// See: http://www.parallax.com/dl/docs/prod/acc/28015-PING-v1.3.pdf
return microseconds / 74 / 2;
}

long microsecondsToCentimeters(long microseconds)
{

if ( pingPin,_______________ )
{
digitalWrite(13,HIGH);

}
else
{
digitalWrite(13,LOW);

}
// The speed of sound is 340 m/s or 29 microseconds per centimeter.
// The ping travels out and back, so to find the distance of the
// object we take half of the distance travelled.
return microseconds / 29 / 2;
}

doned

No, not the "quote" icon, the Code (#) icon.
You can go back and modify old posts.

i think the problem is that my arduino uno cant read the cm and inches

Why do you think that?

well if ( pingPin,_______________ ) i don't know what does, but your arduino can read the ms of the ping, and can translate this time in cm/inches

with the first code (that was working, right?) you can read in the serial monitor the output (distance in inch and cm), take a look if this data is good.

yeah your right, :smiley:
but can you send and example of it, a little bit modified, so i will understand it clearly :relaxed:

if ( pingPin,_______________ )

I don't understand what this is meant to signify. It doesn't look like C.

Please will you go back over your earlier posts, highlight the code, then click on the # icon. Then click "save".
Get rid of any "quote" tags, except where quotes are intended.

THANK YOU LESTO,
my PING))) SENSOR worked like a charm. :slight_smile: :smiley: :smiley: :smiley: :smiley: :smiley: