Hello y'all =)
I'm working with a line follower, and I've got trouble.
the wheels don't rotate and the sensors ( KY-033 3 pins) detect everything, not the black line.
(my sensors are placed 3cm away from the floor)
Here is the video I saw to make the line follower 
Line Follower Robot using Arduino
I used these sensors:
but in the video, the guy uses these:
And here is the code
#define IR_SENSOR_RIGHT 11
#define IR_SENSOR_LEFT 12
#define MOTOR_SPEED 255
//Right motor
int enableRightMotor=6;
int rightMotorPin1=7;
int rightMotorPin2=8;
//Left motor
int enableLeftMotor=5;
int leftMotorPin1=9;
int leftMotorPin2=10;
void setup()
{
//The problem with TT gear motors is that, at very low pwm value it does not even rotate.
//If we increase the PWM value then it rotates faster and our robot is not controlled in that speed and goes out of line.
//For that we need to increase the frequency of analogWrite.
//Below line is important to change the frequency of PWM signal on pin D5 and D6
//Because of this, motor runs in controlled manner (lower speed) at high PWM value.
//This sets frequecny as 7812.5 hz.
TCCR0B = TCCR0B & B11111000 | B00000010 ;
// put your setup code here, to run once:
pinMode(enableRightMotor, OUTPUT);
pinMode(rightMotorPin1, OUTPUT);
pinMode(rightMotorPin2, OUTPUT);
pinMode(enableLeftMotor, OUTPUT);
pinMode(leftMotorPin1, OUTPUT);
pinMode(leftMotorPin2, OUTPUT);
pinMode(IR_SENSOR_RIGHT, INPUT);
pinMode(IR_SENSOR_LEFT, INPUT);
rotateMotor(0,0);
}
void loop()
{
int rightIRSensorValue = digitalRead(IR_SENSOR_RIGHT);
int leftIRSensorValue = digitalRead(IR_SENSOR_LEFT);
//If none of the sensors detects black line, then go straight
if (rightIRSensorValue == LOW && leftIRSensorValue == LOW)
{
rotateMotor(MOTOR_SPEED, MOTOR_SPEED);
}
//If right sensor detects black line, then turn right
else if (rightIRSensorValue == HIGH && leftIRSensorValue == LOW )
{
rotateMotor(-MOTOR_SPEED, MOTOR_SPEED);
}
//If left sensor detects black line, then turn left
else if (rightIRSensorValue == LOW && leftIRSensorValue == HIGH )
{
rotateMotor(MOTOR_SPEED, -MOTOR_SPEED);
}
//If both the sensors detect black line, then stop
else
{
rotateMotor(0, 0);
}
}
void rotateMotor(int rightMotorSpeed, int leftMotorSpeed)
{
if (rightMotorSpeed < 0)
{
digitalWrite(rightMotorPin1,LOW);
digitalWrite(rightMotorPin2,HIGH);
}
else if (rightMotorSpeed > 0)
{
digitalWrite(rightMotorPin1,HIGH);
digitalWrite(rightMotorPin2,LOW);
}
else
{
digitalWrite(rightMotorPin1,LOW);
digitalWrite(rightMotorPin2,LOW);
}
if (leftMotorSpeed < 0)
{
digitalWrite(leftMotorPin1,LOW);
digitalWrite(leftMotorPin2,HIGH);
}
else if (leftMotorSpeed > 0)
{
digitalWrite(leftMotorPin1,HIGH);
digitalWrite(leftMotorPin2,LOW);
}
else
{
digitalWrite(leftMotorPin1,LOW);
digitalWrite(leftMotorPin2,LOW);
}
analogWrite(enableRightMotor, abs(rightMotorSpeed));
analogWrite(enableLeftMotor, abs(leftMotorSpeed));
}
I hope someone will help me 
