Things used in this project

Schematics

Ultrasonic distance measurer with LCD display support
Tried to keep the Fritzing scheme as simple as possible
ultrasonic_distance_measurer_with_lcd_display_Vh4aUFir0a.fzz

Code

Ultrasonic distance measurer with LCD display Arduino
#include <LiquidCrystal.h> //Load Liquid Crystal Library
LiquidCrystal LCD(12, 11, 5, 4, 3, 2);  //Create Liquid Crystal Object called LCD
 
int trigPin=9; //Sensor Trip pin connected to Arduino pin 9
int echoPin=7;  //Sensor Echo pin connected to Arduino pin 7
int myCounter=0;  //declare your variable myCounter and set to 0
int servoControlPin=6; //Servo control line is connected to pin 6
float pingTime;  //time for ping to travel from the sensor to the target and return
float targetDistance; //Distance to Target in Centimeters
float speedOfSound=776.5; //Speed of sound in miles per hour
 
void setup() {
  
Serial.begin(9600);
pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);
LCD.begin(16,2); //Tell Arduino to start your 16x2 LCD
LCD.setCursor(0,0);  //Set LCD cursor to upper left corner, column 0, row 0
LCD.print("Distance:");  //Print Message on First Row
}
 
void loop() {
  
  digitalWrite(trigPin, LOW); //Set trigger pin low
  delayMicroseconds(2000); //Let signal settle
  digitalWrite(trigPin, HIGH); //Set trigPin high
  delayMicroseconds(15); //Delay in high state
  digitalWrite(trigPin, LOW); //ping has now been sent
  delayMicroseconds(10); //Delay in high state
  
  pingTime = pulseIn(echoPin, HIGH);  //pingTime in microceconds
  pingTime=pingTime/1000000; //convert pingTime to seconds by dividing by 1000000 (microseconds in a second)
  pingTime=pingTime/3600; //convert pingtime to hours by dividing by 3600 (seconds in an hour)
  targetDistance= speedOfSound * pingTime;  //This will be in miles, since we declared the speed of sound as kilometers per hour; although we're going to convert it back to centimeters 
  targetDistance=targetDistance/2; //Remember ping travels to the target and back from the target, so you must divide by 2 for actual target distance.
  targetDistance= targetDistance*160934,4;    //Convert miles to centimeters by multipling by 160934,4 

 
  
  LCD.setCursor(0,1);  //Set the cursor to the first column of the second row
  LCD.print("                "); //Print blanks to clear the row
  LCD.setCursor(0,1);   //Set Cursor again to the first column of the second row
  LCD.print(targetDistance); //Print measured distance
  LCD.print(" centimeters");  //Print your units
  delay(250); //Pause to let things settle
  
}

Credits

Replications

Did you replicate this project? Share it!

I made one

Love this project? Think it could be improved? Tell us what you think!

Give feedback

Comments

Similar projects you might like

PHPoC: Web-Based Thermometer
Easy
  • 307
  • 13

Full instructions

This project allows you to check the temperature at home from anywhere using a web browser.

LED To and Fro
Easy
  • 23
  • 2

Full instructions

Four LEDs blik alternatively to give a to and fro blinking

Arduino - Web-Based Joystick
Easy
  • 640
  • 16

Full instructions

This project shows how to control devices from anywhere using web-based joystick on smartphone.

Pixel Art Frame
Easy
  • 45
  • 1

Full instructions

I’ve always wanted to play with a big LED matrix, and now I have! :) In this post, I’m making a Pixel Art Frame, capable of displaying im...

Distance Indicator Using Ultrasonic Sensor
Easy
  • 162
  • 4

Work in progress

This project lights a set of LED's depending upon the distance of the obstacle with respect to the ultrasonic sensor.

Sorting Hat: Circuit Playground Express Starter Project
Easy
  • 183
  • 3

Protip

Which Hogwarts House do you belong in? A quick first project for this beginner-friendly board from Adafruit.

ProjectsCommunitiesTopicsContestsLiveAppsBetaFree StoreBlogAdd projectSign up / Login