Trying to code obstacle avoidance on my very first project. HELP...

Projects Programming
1

Hey guys, very new here and trying to compile what I figure should be very easy. Copying an already made code and I paste it on Arduino and its giving me an

(Arduino: 1.8.9 (Windows Store 1.8.21.0) (Windows 10), Board: "Arduino/Genuino Uno"

sketch_nov02a:7:23: error: AFMotor.h: No such file or directory

compilation terminated.

exit status 1
AFMotor.h: No such file or directory

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

Also here is the code I'm using

//ARDUINO OBSTACLE AVOIDING CAR Video - How To Make an EASY Arduino Obstacle Avoiding Car Robot | DIY - YouTube
// Before uploading the code you have to install the necessary library//
//AFMotor Library Library Install | Adafruit Motor Shield | Adafruit Learning System //
//NewPing Library GitHub - eliteio/Arduino_New_Ping: New Ping Library from http://playground.arduino.cc/Code/NewPing //
//Servo Library GitHub - arduino-libraries/Servo: Servo Library for Arduino //

#include <AFMotor.h>
#include <NewPing.h>
#include <Servo.h>

#define TRIG_PIN A0
#define ECHO_PIN A1
#define MAX_DISTANCE 100
#define MAX_SPEED 150 // sets speed of DC motors
#define MAX_SPEED_OFFSET 20

NewPing sonar(TRIG_PIN, ECHO_PIN, MAX_DISTANCE);

AF_DCMotor motor1(1, MOTOR12_64KHZ);
AF_DCMotor motor2(2, MOTOR12_64KHZ);
AF_DCMotor motor3(3, MOTOR34_64KHZ);
AF_DCMotor motor4(4, MOTOR34_64KHZ);
Servo myservo;

boolean goesForward=false;
int distance = 100;
int speedSet = 0;

void setup() {

myservo.attach(10);
myservo.write(115);
delay(2000);
distance = readPing();
delay(100);
distance = readPing();
delay(100);
distance = readPing();
delay(100);
distance = readPing();
delay(100);
}

void loop() {
int distanceR = 0;
int distanceL = 0;
delay(40);

if(distance<=25)
{
moveStop();
delay(100);
moveBackward();
delay(200);
moveStop();
delay(200);
distanceR = lookRight();
delay(200);
distanceL = lookLeft();
delay(200);

if(distanceR>=distanceL)
{
turnRight();
moveStop();
}

else

{
turnLeft();
moveStop();
}
}

else
{
moveForward();
}
distance = readPing();
}

int lookRight()
{
myservo.write(50);
delay(500);
int distance = readPing();
delay(100);
myservo.write(115);
return distance;
}

int lookLeft()
{
myservo.write(170);
delay(500);
int distance = readPing();
delay(100);
myservo.write(115);
return distance;
delay(100);
}

int readPing() {
delay(100);
int cm = sonar.ping_cm();
if(cm==0)
{
cm = 250;
}
return cm;
}

void moveStop() {
motor1.run(RELEASE);
motor2.run(RELEASE);
motor3.run(RELEASE);
motor4.run(RELEASE);
}

void moveForward() {

if(!goesForward)
{
goesForward=true;
motor1.run(FORWARD);
motor2.run(FORWARD);
motor3.run(FORWARD);
motor4.run(FORWARD);
for (speedSet = 0; speedSet < MAX_SPEED; speedSet +=2) // slowly bring the speed up to avoid loading down the batteries too quickly
{
motor1.setSpeed(speedSet);
motor2.setSpeed(speedSet);
motor3.setSpeed(speedSet);
motor4.setSpeed(speedSet);
delay(5);
}
}
}

void moveBackward() {
goesForward=false;
motor1.run(BACKWARD);
motor2.run(BACKWARD);
motor3.run(BACKWARD);
motor4.run(BACKWARD);
for (speedSet = 0; speedSet < MAX_SPEED; speedSet +=2) // slowly bring the speed up to avoid loading down the batteries too quickly
{
motor1.setSpeed(speedSet);
motor2.setSpeed(speedSet);
motor3.setSpeed(speedSet);
motor4.setSpeed(speedSet);
delay(5);
}
}

void turnRight() {
motor1.run(FORWARD);
motor2.run(FORWARD);
motor3.run(BACKWARD);
motor4.run(BACKWARD);
delay(500);
motor1.run(FORWARD);
motor2.run(FORWARD);
motor3.run(FORWARD);
motor4.run(FORWARD);
}

void turnLeft() {
motor1.run(BACKWARD);
motor2.run(BACKWARD);
motor3.run(FORWARD);
motor4.run(FORWARD);
delay(500);
motor1.run(FORWARD);
motor2.run(FORWARD);
motor3.run(FORWARD);
motor4.run(FORWARD);
}

Thanks for your help, iv been browsing the web for close to 2 hours trying to figure this out.

2

Please read and follow the directions in the "How to use this forum" post, and edit your post to add code tags.

what I figure should be very easy

This is a very common misconception for beginners who have skipped all the elementary steps (like learn the programming language, learn to blink an LED without using delay(), read a button, a sensor, a voltage, learn about code libraries like AFMotor.h, etc.), which in turn leads to endless frustration.

3

The program you posted has several comment lines at the top. Did you read them and do what they told you to do e.g. "install the necessary library"?

Steve