Line Tracker 4WD Car Arduino

Let's Make line follwer or tracker 4wd car Arduino

IntermediateFull instructions provided2 hours133

Things used in this project

Hardware components

DC motor (generic)

SparkFun Dual H-Bridge motor drivers L298

USB-A to Micro-USB Cable

SparkFun RedBot Sensor - Line Follower

LED (generic)

power bank

Pimoroni Maker Essentials - Micro-motors & Grippy Wheels

Story

Let's Assembly our Materials :

we will need :

Arduino
Led light
Line Follower Sensor
Power bank
An Old usb cable
4 MOTORS AND H-bridge

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Let's connect everything to Arduino :

THE connection of h-bridge

int1 ==> 9
int2 ==>10
int3 ==> 11
int4 ==> 12
ENA ==> 8
ENB ==> 7

THE CONNECTION OF THE MOTOR THE BLACK WITH RED

LineSensor:

v+ ==> 5v
GND ==> GND
S ==> A0

Led :

PIN ==> 5
GND ==> GND

Power bank :

the old usb cut it then take the red and the black ones then connect the black to the h-bridge to GND and the red ones connect it to 12+.

The End :

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Code

the code

#define int1 9
#define int2 10
#define int3 11
#define int4 12
#define enA 8
#define enB 7
#define line A0
#define led 5



void setup(){
  pinMode(int1, OUTPUT);
  pinMode(int2, OUTPUT);
  pinMode(int3, OUTPUT);
  pinMode(int4, OUTPUT);
  pinMode(enA, OUTPUT);
  pinMode(enB, OUTPUT);
  pinMode(line, INPUT);
  pinMode(led, OUTPUT);
  digitalWrite(led, HIGH);
}
void loop(){
  int lineSensor = analogRead(line);
  if(lineSensor < 500){
    stop();
  }
  else{
   
    forward();
  }
}
void forward(){
  digitalWrite(int1, HIGH);
  digitalWrite(int2, LOW);
  digitalWrite(int3, HIGH);
  digitalWrite(int4, LOW);
  digitalWrite(enA, HIGH);
  digitalWrite(enB ,HIGH);


}
void stop(){
  digitalWrite(int1, LOW);
  digitalWrite(int2, LOW);
  digitalWrite(int3, LOW);
  digitalWrite(int4, LOW);
  digitalWrite(enA, LOW);
  digitalWrite(enB ,LOW);
  

}