My HC-SR04 ultrasonic sensor doesn't work

Projects General Guidance
1

As the title says my HC-SR04 ultrasonic sensor doesn't work. It was working just fine and suddently started outputting nothing. I checked my circuit multiple times and it was looking fine. I do not think not recieveing enough voltage because when i chcecked with a multimeter it said 4.95V because.

#include <LiquidCrystal.h>
 
int Trig = 7;  //pin 2 Arduino połączony z pinem Trigger czujnika
int Echo = 8;  //pin 3 Arduino połączony z pinem Echo czujnika
int CM;        
long CZAS;
int buttonstate;
const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);
 
void setup() {
  Serial.begin(9600);
  lcd.begin(16, 2);
 
  lcd.print("Witaj");
  delay(1500);
  lcd.clear();
  pinMode(13, INPUT);
  digitalWrite(13, HIGH);
  pinMode(6, OUTPUT);
  digitalWrite(6, HIGH);
}
 
void loop() {
 
buttonstate = digitalRead(13);
if (buttonstate == 0){
  lcd.setCursor(0, 0);
  lcd.print(CM);
}
Serial.println(CZAS);
pomiar_odleglosci();
 
}
 
void pomiar_odleglosci()
{
  digitalWrite(Trig, LOW);        //ustawienie stanu wysokiego na 2 uS - impuls inicjalizujacy - patrz dokumentacja
  delayMicroseconds(2);
  digitalWrite(Trig, HIGH);       //ustawienie stanu wysokiego na 10 uS - impuls inicjalizujacy - patrz dokumentacja
  delayMicroseconds(10);
  digitalWrite(Trig, LOW);
  digitalWrite(Echo, HIGH); 
  CZAS = pulseIn(Echo, HIGH);
  CM = CZAS / 58;                //szerokość odbitego impulsu w uS podzielone przez 58 to odc w cm - patrz dokumentacja
}
2

Why isn't the code here where it would be easy to see without the need to visit another website ?

3

You know I cannot see the code either. More important I would like to see an annotated schematic showing exactly how you have it wired and links to "Technical Information" on the hardware items. Do not burn your time on a frizzy thing they are useless and miss most of what we need to know. You are using a HC-SR04 (which one there are several) and you probably have an Arduino connected to it, again which one? What are you using to power this, a 9V battery will do exactly what you are getting.

4

Take out this line and put "pinMode(Echo, INPUT);" into setup().