Project 1 - Controlling a DC motor using PWM and monitoring its Running status

#include
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
#define potentiometer A0
#define bt_F A1
#define bt_S A2
#define bt_B A3
#define M1_34EN 10
#define M1_3A 9
#define M1_4A 8
int read_ADC=0;
int duty_cycle;
int duty_cycle_lcd;
int set = 0;
void setup(){
  Serial.begin(9600);
  pinMode(potentiometer, INPUT);
  pinMode(bt_F, INPUT_PULLUP);
  pinMode(bt_S, INPUT_PULLUP);
  pinMode(bt_B, INPUT_PULLUP);
  pinMode(M1_34EN, OUTPUT);
  pinMode(M1_3A, OUTPUT);
  pinMode(M1_4A, OUTPUT);
  lcd.begin(16,2);
  lcd.setCursor(0,1);
  lcd.print("Hi");
  delay(2000);
  lcd.clear();
}
void loop() {
  read_ADC = analogRead(potentiometer);
  duty_cycle = map(read_ADC, 0, 1023, 0,255);
  duty_cycle_lcd = map(read_ADC, 0, 1023,0, 100);
  analogWrite(M1_34EN, duty_cycle);
  lcd.setCursor(0,0);
  lcd.print("Duty Cycle:");
  lcd.print(duty_cycle_lcd);
  lcd.print("%  ");
  if(digitalRead (bt_F) == 0)(set = 1);
  if(digitalRead (bt_S) == 0)(set = 0);
  if(digitalRead (bt_B) == 0)(set = 2);
  lcd.setCursor(0,1);
  if(set==0) { lcd.print("   Stop   ");
  digitalWrite(M1_3A, LOW);
  digitalWrite(M1_4A, LOW);
  
}
if(set==1){lcd.print("   Clockwise   ");
digitalWrite(M1_3A, HIGH);
digitalWrite(M1_4A, LOW);
}
if(set==2){lcd.print("   Anticlockwise   ");
digitalWrite(M1_3A, LOW);
digitalWrite(M1_4A, HIGH);
}
delay(50);
}