LEARN ULTRASONIC AND SERVO CIRCUIT USING TINKERCAD

go nuts and learn about ultrasonic and servo

All you need is a computer and internet connection for this tutorial

On the home page click on new and select circuit.

now you are here on the workspace. Use the search bar to search for the components(breadboard,arduino,ultrasonic,servo) just hold and drag it

both servo and ultrasonic has 3 pins the 2 pins ins for the ground and power the third is for signal connect it to the arduino any number will work.

CODE:

#include <Servo.h>

int distance = 0;

Servo servo_3;

long readUltrasonicDistance(int triggerPin, int echoPin)

{

  pinMode(triggerPin, OUTPUT);  // Clear the trigger

  digitalWrite(triggerPin, LOW);

  delayMicroseconds(2);

  // Sets the trigger pin to HIGH state for 10 microseconds

  digitalWrite(triggerPin, HIGH);

  delayMicroseconds(10);

  digitalWrite(triggerPin, LOW);

  pinMode(echoPin, INPUT);

  // Reads the echo pin, and returns the sound wave travel time in microseconds

  return pulseIn(echoPin, HIGH);

}

void setup()

{

  servo_3.attach(3, 500, 2500);

}

void loop()

{

  servo_3.write(180);

  distance = 0.01723 * readUltrasonicDistance(4, 4);

  if (distance <= 100) {

    servo_3.write(90);

    delay(3000); // Wait for 3000 millisecond(s)

    servo_3.write(180);

  }

  servo_3.write(180);

}

logic:

the servo position at 180 degrees once the ultrasonic sensor distance is greater than equal to 100 degrees the servo position will change to 90 degrees and after for 3 sec it will go back to 180 degrees