Printing the Distance on LCD 5110 Screen

Hey everyone. Today , ı am ganna show you how can you measure the distance and print the distance on the screen.

Let's look steps...

Here is a list of parts that i used to make this project:

• Arduino UNO
• HC04 Ultrasonic Sensor
• Breadboard
• Jumper Wires (male to male and male to female)
• LCD5110 Display

The code has explanations of code functions. You will easly understand it. If you have a problem , you can contact me.

#include 
LCD5110 lcd(8,9,10,11,12);      //(clk,din,dc,rst,ce)
extern uint8_t MediumNumbers[]; //describe fonts
extern uint8_t SmallFont[];
int echopin=6;                  //HC 04 ultrasonic sensor echopin 
int trigpin=5;                  //HC 04 ultrasonic sensor trigpin
int BL=3;                       
int TIME;                       //time
int DISTANCE;                     //distance
void setup() {
  pinMode(echopin,INPUT);       //echopin is ınput because it receives sound wave 
  pinMode(trigpin,OUTPUT);      //trigpin is output because it sends sound wave 
  pinMode(BL,OUTPUT);           //back light is output
  Serial.begin(9600);         
  lcd.InitLCD();                //initilaze the lcd
  lcd.setContrast(55);          //set contrast(0 to 125)
}
void loop() {
  analogWrite(BL,300);        
  digitalWrite(trigpin,LOW);     //first, we start trigpin low 
  delay(50);                    
  digitalWrite(trigpin,HIGH);    //second, we open trigpin and send sound made
  delay(50);              
  digitalWrite(trigpin,LOW);     //then, we close again for other loop
  TIME = pulseIn(echopin,HIGH);  //then, we open echopin and receive sound made 
                                 //and measure the time with pulseIn() function.
  DISTANCE = sure/(2/29.1) ;       //finally, we measure the distance  
  
    lcd.clrScr();                   //clear screen
    lcd.drawRoundRect(0,0,70,43);   //draw rectangle
    lcd.setFont(SmallFont);         //set font
    lcd.print("DISTANCE",18,5);     //print
    lcd.print("CM",40,30);          //cm
    lcd.setFont(MediumNumbers);     //set font 
    lcd.printNumI(mesafe,2,22);     //print distance
    delay(500);                     
    lcd.update();                   //update   
}