Measure Distance Using JSN SR-04T + LCD

Measure distance using JSN SR-04T waterproof ultrasound module and an LCD I2C (cm/inches).

Jan 30, 2019

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7 respects

measuring

ultrasound

distance

Components and supplies

Arduino UNO

Standard LCD - 16x2 White on Blue

JSN SR-04T

Project description

Code

Code_In_Serial.ino

arduino

Display distance in serial monitor in inches

1/* This code works with JSN SR04 T ultrasound module
2 * It measures  the distance and shows it on the Serial monitor
3 * Refer to www.SurtrTech. com  or SurtrTech YT channel for more informations 
4 */
5
6#define TRIG 11 //Module  pins
7#define ECHO 12 
8
9void setup() { 
10  
11  Serial.begin(9600); //  Serial monitoring 
12  pinMode(TRIG, OUTPUT); // Initializing Trigger Output and  Echo Input 
13  pinMode(ECHO, INPUT_PULLUP);
14  } 
15  
16  void loop() { 
17    
18    digitalWrite(TRIG, LOW); // Set the trigger pin to low for 2uS 
19    delayMicroseconds(2); 
20    
21    digitalWrite(TRIG, HIGH); // Send a 10uS  high to trigger ranging 
22    delayMicroseconds(20); 
23    
24    digitalWrite(TRIG,  LOW); // Send pin low again 
25    float distance = pulseIn(ECHO, HIGH,26000);  // Read in times pulse 
26    
27    distance= distance/58; //Convert the pulse  duration to distance
28                           //You can add other math functions  to calibrate it well
29    distance= distance*0.3937; //Convert from cm to inches
30    
31    Serial.print("Distance ");
32    Serial.print(distance,2);
33    Serial.println("  Inches");
34   
35    delay(50);
36    
37}
38
39

/* This code works with JSN SR04 T ultrasound module
 * It measures  the distance and shows it on the Serial monitor
 * Refer to www.SurtrTech. com  or SurtrTech YT channel for more informations 
 */

#define TRIG 11 //Module  pins
#define ECHO 12 

void setup() { 
  
  Serial.begin(9600); //  Serial monitoring 
  pinMode(TRIG, OUTPUT); // Initializing Trigger Output and  Echo Input 
  pinMode(ECHO, INPUT_PULLUP);
  } 
  
  void loop() { 
    
    digitalWrite(TRIG, LOW); // Set the trigger pin to low for 2uS 
    delayMicroseconds(2); 
    
    digitalWrite(TRIG, HIGH); // Send a 10uS  high to trigger ranging 
    delayMicroseconds(20); 
    
    digitalWrite(TRIG,  LOW); // Send pin low again 
    float distance = pulseIn(ECHO, HIGH,26000);  // Read in times pulse 
    
    distance= distance/58; //Convert the pulse  duration to distance
                           //You can add other math functions  to calibrate it well
    distance= distance*0.3937; //Convert from cm to inches
    
    Serial.print("Distance ");
    Serial.print(distance,2);
    Serial.println("  Inches");
   
    delay(50);
    
}

Code_cm_Serial.ino

arduino

Display distance on the Serial monitor in cm

1/* This code works with JSN SR04 T ultrasound module
2 * It measures  the distance and shows it on the Serial monitor
3 * Refer to www.SurtrTech. com  or SurtrTech YT channel for more informations 
4 */
5
6#define TRIG 11 //Module  pins
7#define ECHO 12 
8
9void setup() { 
10  
11  Serial.begin(9600); //  Serial monitoring 
12  pinMode(TRIG, OUTPUT); // Initializing Trigger Output and  Echo Input 
13  pinMode(ECHO, INPUT_PULLUP);
14  } 
15  
16  void loop() { 
17    
18    digitalWrite(TRIG, LOW); // Set the trigger pin to low for 2uS 
19    delayMicroseconds(2); 
20    
21    digitalWrite(TRIG, HIGH); // Send a 10uS  high to trigger ranging 
22    delayMicroseconds(20); 
23    
24    digitalWrite(TRIG,  LOW); // Send pin low again 
25    int distance = pulseIn(ECHO, HIGH,26000); //  Read in times pulse 
26    
27    distance= distance/58; //Convert the pulse duration  to distance
28                           //You can add other math functions to  calibrate it well
29                           
30    Serial.print("Distance  ");
31    Serial.print(distance);
32    Serial.println("cm");
33   
34    delay(50);
35    
36}
37
38

/* This code works with JSN SR04 T ultrasound module
 * It measures  the distance and shows it on the Serial monitor
 * Refer to www.SurtrTech. com  or SurtrTech YT channel for more informations 
 */

#define TRIG 11 //Module  pins
#define ECHO 12 

void setup() { 
  
  Serial.begin(9600); //  Serial monitoring 
  pinMode(TRIG, OUTPUT); // Initializing Trigger Output and  Echo Input 
  pinMode(ECHO, INPUT_PULLUP);
  } 
  
  void loop() { 
    
    digitalWrite(TRIG, LOW); // Set the trigger pin to low for 2uS 
    delayMicroseconds(2); 
    
    digitalWrite(TRIG, HIGH); // Send a 10uS  high to trigger ranging 
    delayMicroseconds(20); 
    
    digitalWrite(TRIG,  LOW); // Send pin low again 
    int distance = pulseIn(ECHO, HIGH,26000); //  Read in times pulse 
    
    distance= distance/58; //Convert the pulse duration  to distance
                           //You can add other math functions to  calibrate it well
                           
    Serial.print("Distance  ");
    Serial.print(distance);
    Serial.println("cm");
   
    delay(50);
    
}

Code_LCD_cm.ino

arduino

Display distance in LCD i²c in cm

1/* This code works with JSN SR04 T ultrasound module and LCD ic screen
2  * It measures the distance and shows it on the LCD screen in cm
3 * Refer to www.SurtrTech.  com or SurtrTech YT channel for more informations 
4 */
5
6#include <LiquidCrystal_I2C.h>  //Lcd library
7
8#define I2C_ADDR 0x27 //or(0x3F) I2C adress, you should use  the code to scan the adress first (0x27) here
9#define BACKLIGHT_PIN 3 // Declaring  LCD Pins
10#define En_pin 2
11#define Rw_pin 1
12#define Rs_pin 0
13#define  D4_pin 4
14#define D5_pin 5
15#define D6_pin 6
16#define D7_pin 7
17
18#define  TRIG 11   //Module pins
19#define ECHO 12 
20
21LiquidCrystal_I2C lcd(I2C_ADDR,En_pin,Rw_pin,Rs_pin,D4_pin,D5_pin,D6_pin,D7_pin);
22
23void  setup() { 
24  pinMode(A0,OUTPUT);
25  digitalWrite(A0,HIGH);
26  pinMode(TRIG,  OUTPUT); // Initializing Trigger Output and Echo Input 
27  pinMode(ECHO, INPUT_PULLUP);  
28  lcd.begin (16,2);
29  lcd.setBacklightPin(BACKLIGHT_PIN,POSITIVE);
30  lcd.setBacklight(HIGH); //Lighting backlight
31  lcd.home ();
32  } 
33  
34  void loop() { 
35    
36    digitalWrite(TRIG, LOW); // Set the trigger pin  to low for 2uS 
37    delayMicroseconds(2); 
38    
39    digitalWrite(TRIG,  HIGH); // Send a 10uS high to trigger ranging 
40    delayMicroseconds(20); 
41    
42    digitalWrite(TRIG, LOW); // Send pin low again 
43    float distance  = pulseIn(ECHO, HIGH,26000); // Read in times pulse 
44    
45    distance = distance/58;//Convert  the pulse duration to distance
46                           //You can add other  math functions to calibrate it well
47       
48    lcd.clear();
49    lcd.print("Distance:");
50    lcd.setCursor(0,1);
51    lcd.print(distance,1);
52    lcd.setCursor(6,1);
53    lcd.print("cm");
54    delay(500);
55    
56}
57
58

/* This code works with JSN SR04 T ultrasound module and LCD ic screen
  * It measures the distance and shows it on the LCD screen in cm
 * Refer to www.SurtrTech.  com or SurtrTech YT channel for more informations 
 */

#include <LiquidCrystal_I2C.h>  //Lcd library

#define I2C_ADDR 0x27 //or(0x3F) I2C adress, you should use  the code to scan the adress first (0x27) here
#define BACKLIGHT_PIN 3 // Declaring  LCD Pins
#define En_pin 2
#define Rw_pin 1
#define Rs_pin 0
#define  D4_pin 4
#define D5_pin 5
#define D6_pin 6
#define D7_pin 7

#define  TRIG 11   //Module pins
#define ECHO 12 

LiquidCrystal_I2C lcd(I2C_ADDR,En_pin,Rw_pin,Rs_pin,D4_pin,D5_pin,D6_pin,D7_pin);

void  setup() { 
  pinMode(A0,OUTPUT);
  digitalWrite(A0,HIGH);
  pinMode(TRIG,  OUTPUT); // Initializing Trigger Output and Echo Input 
  pinMode(ECHO, INPUT_PULLUP);  
  lcd.begin (16,2);
  lcd.setBacklightPin(BACKLIGHT_PIN,POSITIVE);
  lcd.setBacklight(HIGH); //Lighting backlight
  lcd.home ();
  } 
  
  void loop() { 
    
    digitalWrite(TRIG, LOW); // Set the trigger pin  to low for 2uS 
    delayMicroseconds(2); 
    
    digitalWrite(TRIG,  HIGH); // Send a 10uS high to trigger ranging 
    delayMicroseconds(20); 
    
    digitalWrite(TRIG, LOW); // Send pin low again 
    float distance  = pulseIn(ECHO, HIGH,26000); // Read in times pulse 
    
    distance = distance/58;//Convert  the pulse duration to distance
                           //You can add other  math functions to calibrate it well
       
    lcd.clear();
    lcd.print("Distance:");
    lcd.setCursor(0,1);
    lcd.print(distance,1);
    lcd.setCursor(6,1);
    lcd.print("cm");
    delay(500);
    
}

Code_LCD_cm_Underwater.ino

arduino

Code that was mean't to measure underwater if you want to give it a try or correct it

1#include <LiquidCrystal_I2C.h>
2
3#define I2C_ADDR 0x27 //I2C adress,  you should use the code to scan the adress first (0x27) here
4#define BACKLIGHT_PIN  3 // Declaring LCD Pins
5#define En_pin 2
6#define Rw_pin 1
7#define Rs_pin  0
8#define D4_pin 4
9#define D5_pin 5
10#define D6_pin 6
11#define D7_pin  7
12
13#define TRIG 11
14#define ECHO 12 
15
16LiquidCrystal_I2C lcd(I2C_ADDR,En_pin,Rw_pin,Rs_pin,D4_pin,D5_pin,D6_pin,D7_pin);
17
18void  setup() { 
19  
20  pinMode(TRIG, OUTPUT); // Initializing Trigger Output and  Echo Input 
21  pinMode(ECHO, INPUT_PULLUP);
22  pinMode(A0,OUTPUT);
23  digitalWrite(A0,HIGH);  
24  lcd.begin (16,2);
25  lcd.setBacklightPin(BACKLIGHT_PIN,POSITIVE);
26  lcd.setBacklight(HIGH); //Lighting backlight
27  lcd.home ();
28  } 
29  
30  void loop() { 
31    
32    digitalWrite(TRIG, LOW); // Set the trigger pin  to low for 2uS 
33    delayMicroseconds(2); 
34    
35    digitalWrite(TRIG,  HIGH); // Send a 10uS high to trigger ranging 
36    delayMicroseconds(20); 
37    
38    digitalWrite(TRIG, LOW); // Send pin low again 
39    float distance  = pulseIn(ECHO, HIGH,26000); // Read in times pulse 
40    
41    distance = distance/13.3511;  //13.3511 instead of 58 because the speed of a soundwave in water is far bigger  than in air
42       
43    lcd.clear();
44    lcd.print("Distance:");
45    lcd.setCursor(0,1);
46    lcd.print(distance,1);
47    lcd.setCursor(6,1);
48    lcd.print("cm");
49    delay(500);
50    
51}
52
53

#include <LiquidCrystal_I2C.h>

#define I2C_ADDR 0x27 //I2C adress,  you should use the code to scan the adress first (0x27) here
#define BACKLIGHT_PIN  3 // Declaring LCD Pins
#define En_pin 2
#define Rw_pin 1
#define Rs_pin  0
#define D4_pin 4
#define D5_pin 5
#define D6_pin 6
#define D7_pin  7

#define TRIG 11
#define ECHO 12 

LiquidCrystal_I2C lcd(I2C_ADDR,En_pin,Rw_pin,Rs_pin,D4_pin,D5_pin,D6_pin,D7_pin);

void  setup() { 
  
  pinMode(TRIG, OUTPUT); // Initializing Trigger Output and  Echo Input 
  pinMode(ECHO, INPUT_PULLUP);
  pinMode(A0,OUTPUT);
  digitalWrite(A0,HIGH);  
  lcd.begin (16,2);
  lcd.setBacklightPin(BACKLIGHT_PIN,POSITIVE);
  lcd.setBacklight(HIGH); //Lighting backlight
  lcd.home ();
  } 
  
  void loop() { 
    
    digitalWrite(TRIG, LOW); // Set the trigger pin  to low for 2uS 
    delayMicroseconds(2); 
    
    digitalWrite(TRIG,  HIGH); // Send a 10uS high to trigger ranging 
    delayMicroseconds(20); 
    
    digitalWrite(TRIG, LOW); // Send pin low again 
    float distance  = pulseIn(ECHO, HIGH,26000); // Read in times pulse 
    
    distance = distance/13.3511;  //13.3511 instead of 58 because the speed of a soundwave in water is far bigger  than in air
       
    lcd.clear();
    lcd.print("Distance:");
    lcd.setCursor(0,1);
    lcd.print(distance,1);
    lcd.setCursor(6,1);
    lcd.print("cm");
    delay(500);
    
}

Code_LCD_In.ino

arduino

Display distance in LCD i²c in inches

1/* This code works with JSN SR04 T ultrasound module and LCD ic screen
2  * It measures the distance and shows it on the LCD screen in Inches
3 * Refer  to www.SurtrTech. com or SurtrTech YT channel for more informations 
4 */
5
6#include  <LiquidCrystal_I2C.h>
7
8#define I2C_ADDR 0x27 //I2C adress, you should use  the code to scan the adress first (0x27) here
9#define BACKLIGHT_PIN 3 // Declaring  LCD Pins
10#define En_pin 2
11#define Rw_pin 1
12#define Rs_pin 0
13#define  D4_pin 4
14#define D5_pin 5
15#define D6_pin 6
16#define D7_pin 7
17
18#define  TRIG 11  //Module pins
19#define ECHO 12 
20
21LiquidCrystal_I2C lcd(I2C_ADDR,En_pin,Rw_pin,Rs_pin,D4_pin,D5_pin,D6_pin,D7_pin);
22
23void  setup() { 
24  
25  pinMode(TRIG, OUTPUT); // Initializing Trigger Output and  Echo Input 
26  pinMode(ECHO, INPUT_PULLUP); 
27  lcd.begin (16,2);
28  lcd.setBacklightPin(BACKLIGHT_PIN,POSITIVE);
29  lcd.setBacklight(HIGH); //Lighting backlight
30  lcd.home ();
31  } 
32  
33  void loop() { 
34    
35    digitalWrite(TRIG, LOW); // Set the trigger pin  to low for 2uS 
36    delayMicroseconds(2); 
37    
38    digitalWrite(TRIG,  HIGH); // Send a 10uS high to trigger ranging 
39    delayMicroseconds(20); 
40    
41    digitalWrite(TRIG, LOW); // Send pin low again 
42    float distance  = pulseIn(ECHO, HIGH,26000); // Read in times pulse 
43    
44    distance = distance/58;//Convert  the pulse duration to distance
45                           //You can add other  math functions to calibrate it well
46    distance= distance*0.3937; //Convert  from cm to inches
47    
48    lcd.clear();
49    lcd.print("Distance:");
50    lcd.setCursor(0,1);
51    lcd.print(distance,2);
52    lcd.setCursor(6,1);
53    lcd.print("In");
54    delay(500);
55    
56}
57
58

/* This code works with JSN SR04 T ultrasound module and LCD ic screen
  * It measures the distance and shows it on the LCD screen in Inches
 * Refer  to www.SurtrTech. com or SurtrTech YT channel for more informations 
 */

#include  <LiquidCrystal_I2C.h>

#define I2C_ADDR 0x27 //I2C adress, you should use  the code to scan the adress first (0x27) here
#define BACKLIGHT_PIN 3 // Declaring  LCD Pins
#define En_pin 2
#define Rw_pin 1
#define Rs_pin 0
#define  D4_pin 4
#define D5_pin 5
#define D6_pin 6
#define D7_pin 7

#define  TRIG 11  //Module pins
#define ECHO 12 

LiquidCrystal_I2C lcd(I2C_ADDR,En_pin,Rw_pin,Rs_pin,D4_pin,D5_pin,D6_pin,D7_pin);

void  setup() { 
  
  pinMode(TRIG, OUTPUT); // Initializing Trigger Output and  Echo Input 
  pinMode(ECHO, INPUT_PULLUP); 
  lcd.begin (16,2);
  lcd.setBacklightPin(BACKLIGHT_PIN,POSITIVE);
  lcd.setBacklight(HIGH); //Lighting backlight
  lcd.home ();
  } 
  
  void loop() { 
    
    digitalWrite(TRIG, LOW); // Set the trigger pin  to low for 2uS 
    delayMicroseconds(2); 
    
    digitalWrite(TRIG,  HIGH); // Send a 10uS high to trigger ranging 
    delayMicroseconds(20); 
    
    digitalWrite(TRIG, LOW); // Send pin low again 
    float distance  = pulseIn(ECHO, HIGH,26000); // Read in times pulse 
    
    distance = distance/58;//Convert  the pulse duration to distance
                           //You can add other  math functions to calibrate it well
    distance= distance*0.3937; //Convert  from cm to inches
    
    lcd.clear();
    lcd.print("Distance:");
    lcd.setCursor(0,1);
    lcd.print(distance,2);
    lcd.setCursor(6,1);
    lcd.print("In");
    delay(500);
    
}

Code_LCD_In.ino

arduino

Display distance in LCD i²c in inches

1/* This code works with JSN SR04 T ultrasound module and LCD ic screen
2   * It measures the distance and shows it on the LCD screen in Inches
3 * Refer   to www.SurtrTech. com or SurtrTech YT channel for more informations 
4 */
5
6#include   <LiquidCrystal_I2C.h>
7
8#define I2C_ADDR 0x27 //I2C adress, you should use   the code to scan the adress first (0x27) here
9#define BACKLIGHT_PIN 3 // Declaring   LCD Pins
10#define En_pin 2
11#define Rw_pin 1
12#define Rs_pin 0
13#define   D4_pin 4
14#define D5_pin 5
15#define D6_pin 6
16#define D7_pin 7
17
18#define   TRIG 11  //Module pins
19#define ECHO 12 
20
21LiquidCrystal_I2C lcd(I2C_ADDR,En_pin,Rw_pin,Rs_pin,D4_pin,D5_pin,D6_pin,D7_pin);
22
23void   setup() { 
24  
25  pinMode(TRIG, OUTPUT); // Initializing Trigger Output and   Echo Input 
26  pinMode(ECHO, INPUT_PULLUP); 
27  lcd.begin (16,2);
28  lcd.setBacklightPin(BACKLIGHT_PIN,POSITIVE);
29   lcd.setBacklight(HIGH); //Lighting backlight
30  lcd.home ();
31  } 
32  
33   void loop() { 
34    
35    digitalWrite(TRIG, LOW); // Set the trigger pin   to low for 2uS 
36    delayMicroseconds(2); 
37    
38    digitalWrite(TRIG,   HIGH); // Send a 10uS high to trigger ranging 
39    delayMicroseconds(20); 
40     
41    digitalWrite(TRIG, LOW); // Send pin low again 
42    float distance   = pulseIn(ECHO, HIGH,26000); // Read in times pulse 
43    
44    distance = distance/58;//Convert   the pulse duration to distance
45                           //You can add other   math functions to calibrate it well
46    distance= distance*0.3937; //Convert   from cm to inches
47    
48    lcd.clear();
49    lcd.print("Distance:");
50     lcd.setCursor(0,1);
51    lcd.print(distance,2);
52    lcd.setCursor(6,1);
53     lcd.print("In");
54    delay(500);
55    
56}
57
58

/* This code works with JSN SR04 T ultrasound module and LCD ic screen
   * It measures the distance and shows it on the LCD screen in Inches
 * Refer   to www.SurtrTech. com or SurtrTech YT channel for more informations 
 */

#include   <LiquidCrystal_I2C.h>

#define I2C_ADDR 0x27 //I2C adress, you should use   the code to scan the adress first (0x27) here
#define BACKLIGHT_PIN 3 // Declaring   LCD Pins
#define En_pin 2
#define Rw_pin 1
#define Rs_pin 0
#define   D4_pin 4
#define D5_pin 5
#define D6_pin 6
#define D7_pin 7

#define   TRIG 11  //Module pins
#define ECHO 12 

LiquidCrystal_I2C lcd(I2C_ADDR,En_pin,Rw_pin,Rs_pin,D4_pin,D5_pin,D6_pin,D7_pin);

void   setup() { 
  
  pinMode(TRIG, OUTPUT); // Initializing Trigger Output and   Echo Input 
  pinMode(ECHO, INPUT_PULLUP); 
  lcd.begin (16,2);
  lcd.setBacklightPin(BACKLIGHT_PIN,POSITIVE);
   lcd.setBacklight(HIGH); //Lighting backlight
  lcd.home ();
  } 
  
   void loop() { 
    
    digitalWrite(TRIG, LOW); // Set the trigger pin   to low for 2uS 
    delayMicroseconds(2); 
    
    digitalWrite(TRIG,   HIGH); // Send a 10uS high to trigger ranging 
    delayMicroseconds(20); 
     
    digitalWrite(TRIG, LOW); // Send pin low again 
    float distance   = pulseIn(ECHO, HIGH,26000); // Read in times pulse 
    
    distance = distance/58;//Convert   the pulse duration to distance
                           //You can add other   math functions to calibrate it well
    distance= distance*0.3937; //Convert   from cm to inches
    
    lcd.clear();
    lcd.print("Distance:");
     lcd.setCursor(0,1);
    lcd.print(distance,2);
    lcd.setCursor(6,1);
     lcd.print("In");
    delay(500);
    
}

Code_LCD_cm_Underwater.ino

arduino

Code that was mean't to measure underwater if you want to give it a try or correct it

1#include <LiquidCrystal_I2C.h>
2
3#define I2C_ADDR 0x27 //I2C adress,   you should use the code to scan the adress first (0x27) here
4#define BACKLIGHT_PIN   3 // Declaring LCD Pins
5#define En_pin 2
6#define Rw_pin 1
7#define Rs_pin   0
8#define D4_pin 4
9#define D5_pin 5
10#define D6_pin 6
11#define D7_pin   7
12
13#define TRIG 11
14#define ECHO 12 
15
16LiquidCrystal_I2C lcd(I2C_ADDR,En_pin,Rw_pin,Rs_pin,D4_pin,D5_pin,D6_pin,D7_pin);
17
18void   setup() { 
19  
20  pinMode(TRIG, OUTPUT); // Initializing Trigger Output and   Echo Input 
21  pinMode(ECHO, INPUT_PULLUP);
22  pinMode(A0,OUTPUT);
23  digitalWrite(A0,HIGH);   
24  lcd.begin (16,2);
25  lcd.setBacklightPin(BACKLIGHT_PIN,POSITIVE);
26   lcd.setBacklight(HIGH); //Lighting backlight
27  lcd.home ();
28  } 
29  
30   void loop() { 
31    
32    digitalWrite(TRIG, LOW); // Set the trigger pin   to low for 2uS 
33    delayMicroseconds(2); 
34    
35    digitalWrite(TRIG,   HIGH); // Send a 10uS high to trigger ranging 
36    delayMicroseconds(20); 
37     
38    digitalWrite(TRIG, LOW); // Send pin low again 
39    float distance   = pulseIn(ECHO, HIGH,26000); // Read in times pulse 
40    
41    distance = distance/13.3511;   //13.3511 instead of 58 because the speed of a soundwave in water is far bigger   than in air
42       
43    lcd.clear();
44    lcd.print("Distance:");
45     lcd.setCursor(0,1);
46    lcd.print(distance,1);
47    lcd.setCursor(6,1);
48     lcd.print("cm");
49    delay(500);
50    
51}
52
53

#include <LiquidCrystal_I2C.h>

#define I2C_ADDR 0x27 //I2C adress,   you should use the code to scan the adress first (0x27) here
#define BACKLIGHT_PIN   3 // Declaring LCD Pins
#define En_pin 2
#define Rw_pin 1
#define Rs_pin   0
#define D4_pin 4
#define D5_pin 5
#define D6_pin 6
#define D7_pin   7

#define TRIG 11
#define ECHO 12 

LiquidCrystal_I2C lcd(I2C_ADDR,En_pin,Rw_pin,Rs_pin,D4_pin,D5_pin,D6_pin,D7_pin);

void   setup() { 
  
  pinMode(TRIG, OUTPUT); // Initializing Trigger Output and   Echo Input 
  pinMode(ECHO, INPUT_PULLUP);
  pinMode(A0,OUTPUT);
  digitalWrite(A0,HIGH);   
  lcd.begin (16,2);
  lcd.setBacklightPin(BACKLIGHT_PIN,POSITIVE);
   lcd.setBacklight(HIGH); //Lighting backlight
  lcd.home ();
  } 
  
   void loop() { 
    
    digitalWrite(TRIG, LOW); // Set the trigger pin   to low for 2uS 
    delayMicroseconds(2); 
    
    digitalWrite(TRIG,   HIGH); // Send a 10uS high to trigger ranging 
    delayMicroseconds(20); 
     
    digitalWrite(TRIG, LOW); // Send pin low again 
    float distance   = pulseIn(ECHO, HIGH,26000); // Read in times pulse 
    
    distance = distance/13.3511;   //13.3511 instead of 58 because the speed of a soundwave in water is far bigger   than in air
       
    lcd.clear();
    lcd.print("Distance:");
     lcd.setCursor(0,1);
    lcd.print(distance,1);
    lcd.setCursor(6,1);
     lcd.print("cm");
    delay(500);
    
}

Code_LCD_cm.ino

arduino

Display distance in LCD i²c in cm

1/* This code works with JSN SR04 T ultrasound module and LCD ic screen
2
3  * It measures the distance and shows it on the LCD screen in cm
4 * Refer to www.SurtrTech.
5  com or SurtrTech YT channel for more informations 
6 */
7
8#include <LiquidCrystal_I2C.h>
9  //Lcd library
10
11#define I2C_ADDR 0x27 //or(0x3F) I2C adress, you should use
12  the code to scan the adress first (0x27) here
13#define BACKLIGHT_PIN 3 // Declaring
14  LCD Pins
15#define En_pin 2
16#define Rw_pin 1
17#define Rs_pin 0
18#define
19  D4_pin 4
20#define D5_pin 5
21#define D6_pin 6
22#define D7_pin 7
23
24#define
25  TRIG 11   //Module pins
26#define ECHO 12 
27
28LiquidCrystal_I2C lcd(I2C_ADDR,En_pin,Rw_pin,Rs_pin,D4_pin,D5_pin,D6_pin,D7_pin);
29
30void
31  setup() { 
32  pinMode(A0,OUTPUT);
33  digitalWrite(A0,HIGH);
34  pinMode(TRIG,
35  OUTPUT); // Initializing Trigger Output and Echo Input 
36  pinMode(ECHO, INPUT_PULLUP);
37  
38  lcd.begin (16,2);
39  lcd.setBacklightPin(BACKLIGHT_PIN,POSITIVE);
40
41  lcd.setBacklight(HIGH); //Lighting backlight
42  lcd.home ();
43  } 
44  
45
46  void loop() { 
47    
48    digitalWrite(TRIG, LOW); // Set the trigger pin
49  to low for 2uS 
50    delayMicroseconds(2); 
51    
52    digitalWrite(TRIG,
53  HIGH); // Send a 10uS high to trigger ranging 
54    delayMicroseconds(20); 
55
56    
57    digitalWrite(TRIG, LOW); // Send pin low again 
58    float distance
59  = pulseIn(ECHO, HIGH,26000); // Read in times pulse 
60    
61    distance = distance/58;//Convert
62  the pulse duration to distance
63                           //You can add other
64  math functions to calibrate it well
65       
66    lcd.clear();
67    lcd.print("Distance:");
68
69    lcd.setCursor(0,1);
70    lcd.print(distance,1);
71    lcd.setCursor(6,1);
72
73    lcd.print("cm");
74    delay(500);
75    
76}
77
78

/* This code works with JSN SR04 T ultrasound module and LCD ic screen

  * It measures the distance and shows it on the LCD screen in cm
 * Refer to www.SurtrTech.
  com or SurtrTech YT channel for more informations 
 */

#include <LiquidCrystal_I2C.h>
  //Lcd library

#define I2C_ADDR 0x27 //or(0x3F) I2C adress, you should use
  the code to scan the adress first (0x27) here
#define BACKLIGHT_PIN 3 // Declaring
  LCD Pins
#define En_pin 2
#define Rw_pin 1
#define Rs_pin 0
#define
  D4_pin 4
#define D5_pin 5
#define D6_pin 6
#define D7_pin 7

#define
  TRIG 11   //Module pins
#define ECHO 12 

LiquidCrystal_I2C lcd(I2C_ADDR,En_pin,Rw_pin,Rs_pin,D4_pin,D5_pin,D6_pin,D7_pin);

void
  setup() { 
  pinMode(A0,OUTPUT);
  digitalWrite(A0,HIGH);
  pinMode(TRIG,
  OUTPUT); // Initializing Trigger Output and Echo Input 
  pinMode(ECHO, INPUT_PULLUP);
  
  lcd.begin (16,2);
  lcd.setBacklightPin(BACKLIGHT_PIN,POSITIVE);

  lcd.setBacklight(HIGH); //Lighting backlight
  lcd.home ();
  } 
  

  void loop() { 
    
    digitalWrite(TRIG, LOW); // Set the trigger pin
  to low for 2uS 
    delayMicroseconds(2); 
    
    digitalWrite(TRIG,
  HIGH); // Send a 10uS high to trigger ranging 
    delayMicroseconds(20); 

    
    digitalWrite(TRIG, LOW); // Send pin low again 
    float distance
  = pulseIn(ECHO, HIGH,26000); // Read in times pulse 
    
    distance = distance/58;//Convert
  the pulse duration to distance
                           //You can add other
  math functions to calibrate it well
       
    lcd.clear();
    lcd.print("Distance:");

    lcd.setCursor(0,1);
    lcd.print(distance,1);
    lcd.setCursor(6,1);

    lcd.print("cm");
    delay(500);
    
}

Code_In_Serial.ino

arduino

Display distance in serial monitor in inches

1/* This code works with JSN SR04 T ultrasound module
2 * It measures
3  the distance and shows it on the Serial monitor
4 * Refer to www.SurtrTech. com
5  or SurtrTech YT channel for more informations 
6 */
7
8#define TRIG 11 //Module
9  pins
10#define ECHO 12 
11
12void setup() { 
13  
14  Serial.begin(9600); //
15  Serial monitoring 
16  pinMode(TRIG, OUTPUT); // Initializing Trigger Output and
17  Echo Input 
18  pinMode(ECHO, INPUT_PULLUP);
19  } 
20  
21  void loop() { 
22
23    
24    digitalWrite(TRIG, LOW); // Set the trigger pin to low for 2uS 
25
26    delayMicroseconds(2); 
27    
28    digitalWrite(TRIG, HIGH); // Send a 10uS
29  high to trigger ranging 
30    delayMicroseconds(20); 
31    
32    digitalWrite(TRIG,
33  LOW); // Send pin low again 
34    float distance = pulseIn(ECHO, HIGH,26000);
35  // Read in times pulse 
36    
37    distance= distance/58; //Convert the pulse
38  duration to distance
39                           //You can add other math functions
40  to calibrate it well
41    distance= distance*0.3937; //Convert from cm to inches
42
43    
44    Serial.print("Distance ");
45    Serial.print(distance,2);
46    Serial.println("
47  Inches");
48   
49    delay(50);
50    
51}
52
53

/* This code works with JSN SR04 T ultrasound module
 * It measures
  the distance and shows it on the Serial monitor
 * Refer to www.SurtrTech. com
  or SurtrTech YT channel for more informations 
 */

#define TRIG 11 //Module
  pins
#define ECHO 12 

void setup() { 
  
  Serial.begin(9600); //
  Serial monitoring 
  pinMode(TRIG, OUTPUT); // Initializing Trigger Output and
  Echo Input 
  pinMode(ECHO, INPUT_PULLUP);
  } 
  
  void loop() { 

    
    digitalWrite(TRIG, LOW); // Set the trigger pin to low for 2uS 

    delayMicroseconds(2); 
    
    digitalWrite(TRIG, HIGH); // Send a 10uS
  high to trigger ranging 
    delayMicroseconds(20); 
    
    digitalWrite(TRIG,
  LOW); // Send pin low again 
    float distance = pulseIn(ECHO, HIGH,26000);
  // Read in times pulse 
    
    distance= distance/58; //Convert the pulse
  duration to distance
                           //You can add other math functions
  to calibrate it well
    distance= distance*0.3937; //Convert from cm to inches

    
    Serial.print("Distance ");
    Serial.print(distance,2);
    Serial.println("
  Inches");
   
    delay(50);
    
}

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