Arduino Obstacle Avoiding Robot (Tinkercad Tutorial)

learn how to code and this robot

dc motors, Arduino, servo motor, ultrasonic sensor ,battery(powersupply), L293D

Open Tinkercad .Start a new circuit project. Use all the components needed

connect everything follow the picture above

coding:

#define RMS 5

#define RMP 6

#define RMN 7

#define LMS 4

#define LMP 2

#define LMN 3

const int trigPin = 11;

const int echoPin = 12;

float duration, distance;

void setup() {

pinMode(trigPin, OUTPUT);

pinMode(echoPin, INPUT);

pinMode(RMS, OUTPUT);

pinMode(RMP, OUTPUT);

pinMode(RMN, OUTPUT);

pinMode(LMS, OUTPUT);

pinMode(LMP, OUTPUT);

pinMode(LMN, OUTPUT);

digitalWrite(RMS, HIGH);

digitalWrite(LMS, HIGH);

Serial.begin(9600);

}

void loop() {

sense();

if ( distance > 50 ){

forward();

}

else {

stops();

}

}

void sense() {

digitalWrite(trigPin, LOW);

delayMicroseconds(2);

digitalWrite(trigPin, HIGH);

delayMicroseconds(10);

digitalWrite(trigPin, LOW);

duration = pulseIn(echoPin, HIGH);

distance = (duration*.0343)/2;

Serial.print("Distance: ");

Serial.println(distance);

delay(100);

}

void forward() {

digitalWrite(RMS, HIGH);

digitalWrite(LMS, HIGH);

digitalWrite(RMP, HIGH);

digitalWrite(RMN, LOW);

digitalWrite(LMP, HIGH);

digitalWrite(LMN, LOW);

}

void stops(){

digitalWrite(RMP, LOW);

digitalWrite(RMN, LOW);

digitalWrite(LMP, LOW);

digitalWrite(LMN, LOW);

}

void backward(){

digitalWrite(RMP, LOW);

digitalWrite(RMN, HIGH);

digitalWrite(LMP, LOW);

digitalWrite(LMN, HIGH);

}

void left(){

digitalWrite(RMP, HIGH);

digitalWrite(RMN, LOW);

digitalWrite(LMP, LOW);

digitalWrite(LMN, LOW);

}

void right(){

digitalWrite(RMP, LOW);

digitalWrite(RMN, LOW);

digitalWrite(LMP, HIGH);

digitalWrite(LMN, LOW);

}

the logic:

When the ultrasonic sensor detect a certain object/obstacle it will stop go backward and turn around to other way

congrats now you learn how to make obstacle robot