Hi friends, in this article we know about how to make a line following robot . And also know what is the circuit and code also what are the components required to de this project.
Making video:
line following robot components:
- Arduino BuyNow
- DC motors BuyNow
- L298N motor shield BuyNow
- bredboard & wires BuyNow
If you want to buy Arduino components, I am giving my affiliate links. If you buy the components using my affiliate links, it will help to our channel and website growth. so do these small help.
line following robot using Arduino circuit diagram:
upload the below code
line following robot using Arduino code :
#define in1 9
#define in2 8
#define in3 7
#define in4 6
#define enA 10
#define enB 5
int M1_Speed = 150; // speed of motor 1
int M2_Speed = 150; // speed of motor 2
int LeftRotationSpeed = 250; // Left Rotation Speed
int RightRotationSpeed = 250; // Right Rotation Speed
void setup() {
pinMode(in1,OUTPUT);
pinMode(in2,OUTPUT);
pinMode(in3,OUTPUT);
pinMode(in4,OUTPUT);
pinMode(enA,OUTPUT);
pinMode(enB,OUTPUT);
pinMode(A0, INPUT); // initialize Left sensor as an input
pinMode(A1, INPUT); // initialize Right sensor as an input
}
void loop() {
int LEFT_SENSOR = digitalRead(A0);
int RIGHT_SENSOR = digitalRead(A1);
if(RIGHT_SENSOR==0 && LEFT_SENSOR==0) {
forward(); //FORWARD
}
else if(RIGHT_SENSOR==1 && LEFT_SENSOR==0) {
right(); //Move Right
}
else if(RIGHT_SENSOR==0 && LEFT_SENSOR==1) {
left(); //Move Left
}
else if(RIGHT_SENSOR==1 && LEFT_SENSOR==1) {
Stop(); //STOP
}
}
void forward()
{
digitalWrite(in1, HIGH);
digitalWrite(in2, LOW);
digitalWrite(in3, HIGH);
digitalWrite(in4, LOW);
analogWrite(enA, M1_Speed);
analogWrite(enB, M2_Speed);
}
void backward()
{
digitalWrite(in1, LOW);
digitalWrite(in2, HIGH);
digitalWrite(in3, LOW);
digitalWrite(in4, HIGH);
analogWrite(enA, M1_Speed);
analogWrite(enB, M2_Speed);
}
void right()
{
digitalWrite(in1, LOW);
digitalWrite(in2, HIGH);
digitalWrite(in3, HIGH);
digitalWrite(in4, LOW);
analogWrite(enA, LeftRotationSpeed);
analogWrite(enB, RightRotationSpeed);
}
void left()
{
digitalWrite(in1, HIGH);
digitalWrite(in2, LOW);
digitalWrite(in3, LOW);
digitalWrite(in4, HIGH);
analogWrite(enA, LeftRotationSpeed);
analogWrite(enB, RightRotationSpeed);
}
void Stop()
{
digitalWrite(in1, LOW);
digitalWrite(in2, LOW);
digitalWrite(in3, LOW);
digitalWrite(in4, LOW);
}
you can directly downlaod this code just click on the download button . DOWNLOAD
if you have any doubts regarding to this project, contact me on Instagram or comment on YouTube video. I will help my best.
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