Solve the errors in the codes

#include  //Adafruit Motor Shield Library.First you must download and install AFMotor library
#include  //Pololu QTR Sensor Library. Firstyou must download and install QTRSensors library

AF_DCMotor motor1(1, MOTOR12_1KHZ ); //create motor #1 using M1output on Motor Drive Shield, set to 1kHz PWM frequency
AF_DCMotor motor2(2, MOTOR12_1KHZ ); //create motor #2 using M2output on Motor Drive Shield, set to 1kHz PWM frequency

#define KP 2 //experiment to determine this, start by somethingsmall that just makes your bot follow the line at a slowspeed
#define KD 5 //experiment to determine this, slowly increase thespeeds and adjust this value. ( Note: Kp < Kd)
#define M1_minumum_speed 150 //minimum speed of the Motor1
#define M2_minumum_speed 150 //minimum speed of the Motor2
#define M1_maksimum_speed 250 //max. speed of the Motor1
#define M2_maksimum_speed 250 //max. speed of the Motor2
#define MIDDLE_SENSOR 4 //number of middle sensor used
#define NUM_SENSORS 5 //number of sensors used
#define TIMEOUT 2500 //waits for 2500 us for sensor outputs to golow
#define EMITTER_PIN 2 //emitterPin is the Arduino digital pin thatcontrols whether the IR LEDs are on or off. Emitter is controlledby digital pin 2
#define DEBUG 0
#define sensors
//sensors 0 through 5 are connected to analog inputs 0 through 5,respectively
QTRSensorsRC = ((unsigned char[]) { A4,A3,A2,A1,A0} ,NUM_SENSORS,TIMEOUT, EMITTER_PIN);

unsigned int sensorValues[NUM_SENSORS];

void setup()
{
delay(1500);
manual_calibration();
set_motors(0,0);
}

int lastError = 0;
int last_proportional = 0;
int integral = 0;

void loop()
{
unsigned int sensors[5];
int position = sensor.readLine(sensors); //get calibrated readingsalong with the line position, refer to the QTR Sensors ArduinoLibrary for more details on line position.
int error = position - 2000;

int motorSpeed = KP * error + KD * (error - lastError);
lastError = error;

int leftMotorSpeed = M1_minumum_speed + motorSpeed;
int rightMotorSpeed = M2_minumum_speed - motorSpeed;

// set motor speeds using the two motor speed variables above
set_motors(leftMotorSpeed, rightMotorSpeed);
}

void set_motors(int motor1speed, int motor2speed)
{
if (motor1speed > M1_maksimum_speed ) motor1speed =M1_maksimum_speed;
if (motor2speed > M2_maksimum_speed ) motor2speed =M2_maksimum_speed;
if (motor1speed < 0) motor1speed = 0;
if (motor2speed < 0) motor2speed = 0;
motor1.setSpeed(motor1speed);
motor2.setSpeed(motor2speed);
motor1.run(FORWARD);
motor2.run(FORWARD);
}

//calibrate for sometime by sliding the sensors across the line,or you may use auto-calibration instead
void manual_calibration() {

int i;
int qtrrc;
for (i = 0; i < 250; i++)
{
qtrrc.calibrate(QTR_EMITTERS_ON);
delay(20);
}

if (DEBUG) {
Serial.begin(9600);
for (int i = 0; i < NUM_SENSORS; i++)
{
Serial.print(qtrrc.calibratedMinimumOn[i]);
Serial.print(' ');
}
Serial.println();

for (int i = 0; i < NUM_SENSORS; i++)
{
Serial.print(qtrrc.calibratedMaximumOn[i]);
Serial.print(' ');
}
Serial.println();
Serial.println();
}
}

I am getting errors in this code for the arduino version 1.8.16.Can I please get assistance with solving the error codes ? This isa line following code for a aoutonomous smart car using a PololuQTR-8RC sensor, Arduino mega 2560, and a L293D DC Motor DriveShield Stepper Motor Drive Shield Expansion Board for Arduino.

Answer rating: 100% (QA)

It seems like youre facing some errors in your Arduino code Ill help you go through the code and address the issues Please note that without knowing t... View the full answer