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### Topic: SENSOR PING))) QUESTION (Read 2999 times)previous topic - next topic

#### Muneeb

##### Jul 30, 2011, 05:12 am
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

#### lestofante

#1
##### Jul 30, 2011, 05:54 am
where is the code?
Guida per principianti http://playground.arduino.cc/Italiano/newbie
Unoffical Telegram group https://t.me/genuino

#### Muneeb

#2
##### Jul 30, 2011, 07:15 pm
/* 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

http://www.arduino.cc/en/Tutorial/Ping

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;
}

#### lestofante

#3
##### Jul 30, 2011, 08:06 pm
if (cm > minDistance && cm < maxDistance){
//turn led on
}
Guida per principianti http://playground.arduino.cc/Italiano/newbie
Unoffical Telegram group https://t.me/genuino

#### AWOL

#4
##### Jul 30, 2011, 08:10 pm
@OP: Please don't shout, and when posting code, use the # icon on the toolbar to put the code into a code box.
"Pete, it's a fool looks for logic in the chambers of the human heart." Ulysses Everett McGill.
Do not send technical questions via personal messaging - they will be ignored.
I speak for myself, not Arduino.

#### Muneeb

#5
##### Jul 30, 2011, 10:25 pm
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

#### lestofante

#6
##### Jul 30, 2011, 10:33 pm
it's easy, and i won't code for you, unless you pay me
Guida per principianti http://playground.arduino.cc/Italiano/newbie
Unoffical Telegram group https://t.me/genuino

#### Muneeb

#7
##### Jul 30, 2011, 10:55 pm
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?

#### Muneeb

#8
##### Jul 31, 2011, 01:25 am
ok, it's not working because of the cm or inche. :0
is there something else that can replace the cm or inche

#### AWOL

#9
##### Jul 31, 2011, 10:50 am
Furlongs? What you have written doesn't make sense. Could you tell us what you think the problem is?
"Pete, it's a fool looks for logic in the chambers of the human heart." Ulysses Everett McGill.
Do not send technical questions via personal messaging - they will be ignored.
I speak for myself, not Arduino.

#### Muneeb

#10
##### Jul 31, 2011, 07:13 pm
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

http://www.arduino.cc/en/Tutorial/Ping

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;
}

#### AWOL

#11
##### Jul 31, 2011, 09:09 pm
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".

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

Well of course it can't.
"Pete, it's a fool looks for logic in the chambers of the human heart." Ulysses Everett McGill.
Do not send technical questions via personal messaging - they will be ignored.
I speak for myself, not Arduino.

#### Muneeb

#12
##### Jul 31, 2011, 09:16 pmLast Edit: Jul 31, 2011, 09:46 pm by Muneeb Reason: 1
/* 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

http://www.arduino.cc/en/Tutorial/Ping

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)
{
Quote

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;
}

#13
doned

#### AWOL

#14
##### Jul 31, 2011, 09:23 pmLast Edit: Jul 31, 2011, 09:24 pm by AWOL Reason: 1
No, not the "quote" icon, the Code (#) icon.
You can go back and modify old posts.

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

Why do you think that?
"Pete, it's a fool looks for logic in the chambers of the human heart." Ulysses Everett McGill.
Do not send technical questions via personal messaging - they will be ignored.
I speak for myself, not Arduino.

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