obstacle avoidance robot using arduino

 Here is the code for making a obstacle avoidance robot using :-

1) l298n motor driver 

2) arduino (any)

3)servo  motor (optional)

4) 2 or 4 dc motors and wheels

5)jumper cables if (needed )

6) breadboard if (needed) 

// Motor driver pins

int ENA = 3; int ENB = 5; int IN1 = 2; int IN2 = 4; int IN3 = 6; int IN4 = 7; // Servo pin int servoPin = 9; // Ultrasonic sensor pins int trigPin = 10; int echoPin = 11; // Distance variables long duration; int distance; void setup() { // Set motor driver pins as outputs pinMode(ENA, OUTPUT); pinMode(ENB, OUTPUT); pinMode(IN1, OUTPUT); pinMode(IN2, OUTPUT); pinMode(IN3, OUTPUT); pinMode(IN4, OUTPUT); // Set servo pin as output pinMode(servoPin, OUTPUT); // Set ultrasonic sensor pins pinMode(trigPin, OUTPUT); pinMode(echoPin, INPUT); // Start serial communication Serial.begin(9600); } void loop() { // Rotate servo to scan area for obstacles for (int i = 0; i <= 180; i += 5) { int angle = map(i, 0, 180, 0, 179); digitalWrite(servoPin, HIGH); delayMicroseconds(500 + angle * 5); digitalWrite(servoPin, LOW); delay(30); duration = pulseIn(echoPin, HIGH); distance = duration * 0.034 / 2; if (distance < 30) { // If obstacle detected, stop and turn digitalWrite(ENA, LOW); digitalWrite(ENB, LOW); digitalWrite(IN1, LOW); digitalWrite(IN2, LOW); digitalWrite(IN3, LOW); digitalWrite(IN4, LOW); delay(500); digitalWrite(ENA, HIGH); digitalWrite(ENB, HIGH); digitalWrite(IN1, HIGH); digitalWrite(IN2, LOW); digitalWrite(IN3, LOW); digitalWrite(IN4, HIGH); delay(1000); } } // Move forward if no obstacles detected digitalWrite(ENA, HIGH); digitalWrite(ENB, HIGH); digitalWrite(IN1, HIGH); digitalWrite(IN2, LOW); digitalWrite(IN3, HIGH); digitalWrite(IN4, LOW); delay(500); }

This code uses a servo motor to scan the area for obstacles and an ultrasonic sensor to measure the distance to any obstacles. If an obstacle is detected within 30 cm, the robot stops and turns for 1 second before continuing to move forward. If no obstacles are detected, the robot moves forward. The L298N motor driver is used to control the two motors.

smart glove for blinds

Code for the Arduino nano

#define trigPin 13

#define echoPin 12

#define motor 7

#define buzzer 6

void setup()

{

pinMode(trigPin, OUTPUT);

pinMode(echoPin, INPUT);

pinMode(motor, OUTPUT);

pinMode(buzzer,OUTPUT);

}

void loop()

{

long duration, distance;

digitalWrite(trigPin, LOW);

delayMicroseconds(2);

digitalWrite(trigPin, HIGH);

delayMicroseconds(10);

digitalWrite(trigPin, LOW);

duration = pulseIn(echoPin, HIGH);

distance = (duration/2) / 29.1;

if (distance < 70)     // This is where checking the distance you can change the value

{

digitalWrite(motor,HIGH);    // When the the distance below 100cm

digitalWrite(buzzer,HIGH);

} else

{

digitalWrite(motor,LOW);     // when greater than 100cm

digitalWrite(buzzer,LOW);

} delay(500);

}

               circuit diagram🔝👆👆👆

click here for video

ultra sonic sensor with ARDUINO nano

Code for the ultra sonic sensor with ARDUINo

const int trigPin = 9;

const int echoPin = 10;

const int buzzer = 11;

const int ledPin = 13;

// defines variables

long duration;

int distance;

int safetyDistance;

void setup() {

pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output

pinMode(echoPin, INPUT); // Sets the echoPin as an Input

pinMode(buzzer, OUTPUT);

pinMode(ledPin, OUTPUT);

Serial.begin(9600); // Starts the serial communication

}

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;

safetyDistance = distance;

if (safetyDistance <= 20){ //Enter the Distance 

  digitalWrite(buzzer, HIGH);

  digitalWrite(ledPin, HIGH);

}

else{

  digitalWrite(buzzer, LOW);

  digitalWrite(ledPin, LOW);

}

// Prints the distance on the Serial Monitor

Serial.print("Distance: ");

Serial.println(distance); >

}

👉👉👉👉 click here for video 👈👈👈👈