Arduino Tutorials – Lesson 29 – Servo motor control by Ultrasonic Sensor Module using Arduino UNO

Creating Servo motor control by Ultrasonic sensor program using Arduino UNO

Required Components

1. Ultrasonic sensor board -1 no
2. Arduino Uno board -1 no
3. Servo Motor -1 no
4. Bread board -1 no
5. Data Cable -1 no
6. Connecting Wires -8 no

Circuit

• 

Steps

1. Make sure the components are working properly.
2. Ultrasonic Sensor board, Servo motor VCC, GND connected to 5V, GND of Arduino Uno Board through breadboard.
3. Connect Ultrasonic sensor Board echo, trigger pin to the Arduino Uno Board 2, 3 pin.
4. Connect Servo motor data pin to Arduino Uno Board pin 5.
5. Check the Arduino program.
6. Check the Circuit Connections.
7. Run the Arduino program.

Arduino Program

#include <Servo.h>
Servo myservo;
#define echoPin 2 
#define trigPin 3 
long duration; 
int distance; 
void setup() 
{
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  myservo.attach(5); 
  Serial.begin(9600);
  Serial.println("Ultrasonic Sensor HC-SR04 Test"); 
  Serial.println("with Arduino UNO R3");
  myservo.write(0);
}
void loop() 
{
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  duration = pulseIn(echoPin, HIGH);
  distance = duration * 0.034 / 2;  
  Serial.print("Distance: ");
  Serial.print(distance);
  Serial.println(" cm");
  
  if(distance<=40)
  {
    myservo.write(0);
  }
  else
  {
    myservo.write(160);
  }
}

Usage

1. Robotic sensing
2. Dustbin open and close