Ultrasonic Vehicle Gateway

An automatic ultrasonic vehicle gateway.

Dec 25, 2021

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gateway

passenger vehicles

servo motor

ultrasonic distance sensor

Components and supplies

SG90 Micro-servo motor

Arduino UNO

Ultrasonic Sensor - HC-SR04 (Generic)

Resistor 100 ohm

LED (generic)

Solderless Breadboard Full Size

Project description

Code

UltrasonicVehicleGateway.ino

c_cpp

1# include <Servo.h>
2
3// defines pins numbers
4const int trigPin   = 9;
5const int echoPin = 10;
6const int ledPin = 2;
7
8// defines variables
9long   duration;
10int distance;
11
12//servo motor
13Servo servo;
14
15void setup()   {
16  servo.attach(12); // Attaches the servo motor
17  servo.write(0);
18  pinMode(trigPin,   OUTPUT); // Sets the trigPin as an Output
19  pinMode(ledPin, OUTPUT);
20  pinMode(echoPin,   INPUT); // Sets the echoPin as an Input
21  digitalWrite(ledPin, LOW);
22}
23
24void   loop() {
25  // Clears the trigPin
26  digitalWrite(trigPin, LOW);
27  delayMicroseconds(2);
28
29   // Sets the trigPin on HIGH state for 10 micro seconds
30  digitalWrite(trigPin,   HIGH);
31  delayMicroseconds(10);
32  digitalWrite(trigPin, LOW);
33
34  //   Reads the echoPin, returns the sound wave travel time in microseconds
35  duration   = pulseIn(echoPin, HIGH);
36
37  // Calculating the distance
38  distance = duration   * 0.034 / 2;
39
40  if (distance < 25) {
41    servo.write(90);
42    digitalWrite(ledPin,   HIGH);
43  } else {
44    servo.write(0);
45    digitalWrite(ledPin, LOW);
46   }
47}

# include <Servo.h>

// defines pins numbers
const int trigPin   = 9;
const int echoPin = 10;
const int ledPin = 2;

// defines variables
long   duration;
int distance;

//servo motor
Servo servo;

void setup()   {
  servo.attach(12); // Attaches the servo motor
  servo.write(0);
  pinMode(trigPin,   OUTPUT); // Sets the trigPin as an Output
  pinMode(ledPin, OUTPUT);
  pinMode(echoPin,   INPUT); // Sets the echoPin as an Input
  digitalWrite(ledPin, LOW);
}

void   loop() {
  // Clears the trigPin
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);

   // Sets the trigPin on HIGH state for 10 micro seconds
  digitalWrite(trigPin,   HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);

  //   Reads the echoPin, returns the sound wave travel time in microseconds
  duration   = pulseIn(echoPin, HIGH);

  // Calculating the distance
  distance = duration   * 0.034 / 2;

  if (distance < 25) {
    servo.write(90);
    digitalWrite(ledPin,   HIGH);
  } else {
    servo.write(0);
    digitalWrite(ledPin, LOW);
   }
}

UltrasonicVehicleGateway.ino

c_cpp

1# include <Servo.h>
2
3// defines pins numbers
4const int trigPin  = 9;
5const int echoPin = 10;
6const int ledPin = 2;
7
8// defines variables
9long  duration;
10int distance;
11
12//servo motor
13Servo servo;
14
15void setup()  {
16  servo.attach(12); // Attaches the servo motor
17  servo.write(0);
18  pinMode(trigPin,  OUTPUT); // Sets the trigPin as an Output
19  pinMode(ledPin, OUTPUT);
20  pinMode(echoPin,  INPUT); // Sets the echoPin as an Input
21  digitalWrite(ledPin, LOW);
22}
23
24void  loop() {
25  // Clears the trigPin
26  digitalWrite(trigPin, LOW);
27  delayMicroseconds(2);
28
29  // Sets the trigPin on HIGH state for 10 micro seconds
30  digitalWrite(trigPin,  HIGH);
31  delayMicroseconds(10);
32  digitalWrite(trigPin, LOW);
33
34  //  Reads the echoPin, returns the sound wave travel time in microseconds
35  duration  = pulseIn(echoPin, HIGH);
36
37  // Calculating the distance
38  distance = duration  * 0.034 / 2;
39
40  if (distance < 25) {
41    servo.write(90);
42    digitalWrite(ledPin,  HIGH);
43  } else {
44    servo.write(0);
45    digitalWrite(ledPin, LOW);
46  }
47}

# include <Servo.h>

// defines pins numbers
const int trigPin  = 9;
const int echoPin = 10;
const int ledPin = 2;

// defines variables
long  duration;
int distance;

//servo motor
Servo servo;

void setup()  {
  servo.attach(12); // Attaches the servo motor
  servo.write(0);
  pinMode(trigPin,  OUTPUT); // Sets the trigPin as an Output
  pinMode(ledPin, OUTPUT);
  pinMode(echoPin,  INPUT); // Sets the echoPin as an Input
  digitalWrite(ledPin, LOW);
}

void  loop() {
  // Clears the trigPin
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);

  // Sets the trigPin on HIGH state for 10 micro seconds
  digitalWrite(trigPin,  HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);

  //  Reads the echoPin, returns the sound wave travel time in microseconds
  duration  = pulseIn(echoPin, HIGH);

  // Calculating the distance
  distance = duration  * 0.034 / 2;

  if (distance < 25) {
    servo.write(90);
    digitalWrite(ledPin,  HIGH);
  } else {
    servo.write(0);
    digitalWrite(ledPin, LOW);
  }
}

Downloadable files

Circuit Diagram

Made with AUTODESK Tinkercad

Circuit Diagram