Arduino Nano Distance Sensor

I've made an easy arduino nano distance sensor
Supplies
Materials
First gather materials listed above
Assembly
Connect the ultrasonic sensor and the Arduino board to the breadboard. After connect the ultrasonic sensor to the Arduino board using the jumper wire. For that, see the circuit diagram below. Connect the TRIG pin of the ultrasonic sensor to the D2 pin and the ECHO pin to the D4 pin. The GND pin connects to the GND pin and the VCC pin connects to the VIN or 5v pin.
Downloads
Code
void setup() {
pinMode(2, OUTPUT);//define arduino pin
pinMode(4, INPUT);//define arduino pin
Serial.begin(9600);//enable serial monitor
}
void loop() {
//pulse output
digitalWrite(2, LOW);
delayMicroseconds(4);
digitalWrite(2, HIGH);
delayMicroseconds(10);
digitalWrite(2, LOW);
long t = pulseIn(4, HIGH);//input pulse and save it veriable
long inches = t / 74 / 2; //time convert distance
long cm = t / 29 / 2; //time convert distance
String inch = " inches \t";
String CM = " cm";
Serial.print(inches +inch);//print serial monitor inches
Serial.println(cm +CM);//print serial monitor cm
Serial.println();//print space
delay(100);//delay
}
My Result
https://youtube.com/shorts/9LmdkbMFhrE?feature=share