Tow ultrasonic

Need Help With My Project
1

hello iam trying this code withe tow ultra sonic
but it.s not working any help ?



// defines pins numbers
const int trigPin = 13;
const int echoPin = 14;
const int trigPinn = 12;
const int echoPinn = 15;
const int threshold = 50;

// defines variables
long duration;
long duration1;
int distance;
int distance1;
float h;


#define BLYNK_PRINT Serial
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>

char auth[] = "";
BlynkTimer timer;


void setup() {
pinMode(14, OUTPUT);
pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output
pinMode(echoPin, INPUT); // Sets the echoPin as an Input
pinMode(trigPinn, OUTPUT); // Sets the trigPin as an Output
pinMode(echoPinn, INPUT);
Serial.begin(9600); // Starts the serial communication
Blynk.begin(auth, "am", "00009999", "blynk-cloud.com", 8442);

}


int data()
{
 // Clears the trigPin
digitalWrite(trigPin, LOW);
digitalWrite(trigPinn, LOW);
delayMicroseconds(2);
// Sets the trigPin on HIGH state for 10 micro seconds
digitalWrite(trigPin, HIGH);
digitalWrite(trigPinn, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
digitalWrite(trigPinn, LOW);
// Reads the echoPin, returns the sound wave travel time in microseconds
duration = pulseIn(echoPin, HIGH);
duration1 = pulseIn(echoPinn, HIGH);
// Calculating the distance
distance= duration*0.034/2;
distance1= duration1*0.034/2;
// Prints the distance on the Serial Monitor
Serial.print("Distance: ");
Serial.println(distance);
Serial.print("Distance1: ");
Serial.println(distance1);
delay(10);
 if (distance > threshold){

digitalWrite(14, HIGH);
delayMicroseconds(90000);
digitalWrite(14, LOW);
}

Blynk.virtualWrite(1, distance);
Blynk.virtualWrite(1, distance);
return(distance);


}


void loop()
{
    Blynk.run();
   data();
timer.run();

}
2

You need to move the call to the data() function out of the void loop, and either call the function with a timer, or when you press a button widget in the app (depending on what it is would hoping to achieve).

Read this for more info:

Pete.

3

the problem is the second ultrasonic is always give 0 value

4

Believe me, that isn’t your biggest problem as far as this code is concerned.

Pete.

1 Like
5

is that possible that the one of ultrasonic work when i just attached the echo pin

6

Have you read and understood the document I linked to, and realised how this applies to your code, and what you need to do to restructure your code?

Pete.

7

is that better ?


// defines pins numbers
const int trigPin = 12; //6
const int echoPin = 15; //8
const int trigPin2 = 13;
const int echoPin2 = 14;
// defines variables
long duration;
int distance;
long duration2;
int distance2;

#define BLYNK_PRINT Serial
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>

char auth[] = "";

BlynkTimer timer;

void myTimerEvent()
{
 // Clears the trigPin
digitalWrite(trigPin2, LOW);
delayMicroseconds(2);
// Sets the trigPin on HIGH state for 10 micro seconds
digitalWrite(trigPin2, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin2, LOW);
// Reads the echoPin, returns the sound wave travel time in microseconds
duration2 = pulseIn(echoPin2, HIGH);
// Calculating the distance
distance2= duration2*0.034/2;
// Prints the distance on the Serial Monitor
Serial.print("Distance2: ");
Serial.println(distance2);
delay(10);

Blynk.virtualWrite(2, distance2);

digitalWrite(trigPin, LOW);
delayMicroseconds(2);
// Sets the trigPin on HIGH state for 10 micro seconds
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
// Reads the echoPin, returns the sound wave travel time in microseconds
duration = pulseIn(echoPin, HIGH);
// Calculating the distance
distance= duration*0.034/2;
// Prints the distance on the Serial Monitor
Serial.print("Distance: ");
Serial.println(distance);
delay(10);
Blynk.virtualWrite(1, distance);

  }
void setup() {
pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output
pinMode(echoPin, INPUT); // Sets the echoPin as an Input
Serial.begin(9600); // Starts the serial communication
Blynk.begin(auth, "am", "00009999", "blynk-cloud.com", 8442);
timer.setInterval(5000L, myTimerEvent);
}




void loop()
{
   Blynk.run();
   timer.run();
}
8

Looks much better.
Not sure about port 8442 for the Blynk cloud server though.

Does it work?

Pete.

9

IMG_20190206_002411
IMG_20190206_002411.jpg4096×2304 4.59 MB

it’s worke fine but lookabout how iconnect the tow ultrasonic
just the echo pin from every sensore and its work !

1 Like