Untitled

#include <Arduino.h>

int ledpin = 25;
int POT = 26;
int FAN = 27;
int menu = 0;
int speed;
int x;
int display;
int vlt;
int cur;
int pwr;
int rpm;


void setup() {
  Serial.begin(115200);
  pinMode(POT,INPUT);
  pinMode(FAN,OUTPUT);
  pinMode(ledpin, OUTPUT);
  delay(800);
  Serial.println("\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n");
  Serial.println();
  Serial.print("Initilazing");
  delay(500);
  Serial.print(".");
  delay(500);
  Serial.print(".");
  delay(500);
  Serial.print(".");
  delay(500);
  Serial.print(".");
  delay(500);
  Serial.print(".");
  delay(500);
  Serial.println("\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n");

  Serial.println("Press '0' to stop");
  Serial.println("Press '1' to start");
  
  
}

void loop() {
  if(Serial.available() > 0 )   {

  menu = Serial.read();

    if(menu == '1'){
    digitalWrite(ledpin, LOW);
    x = analogRead(POT);
    speed = map(x,0,4096,0,255);
    analogWrite(FAN,speed);
    display = (speed*100)/255;
    vlt = map(display,0,100,0,12);
    cur = map(display,0,100,0,22);
    pwr = map(display,0,100,0,150);
    rpm = map(display,0,100,0,13000);

    Serial.print("Percentage of fan speed (%) :");
    Serial.print(display);
    Serial.println();

    Serial.print("Voltage (V):");
    Serial.print(vlt);
    Serial.println();

    Serial.print("Current (mA) :");
    Serial.print(cur);
    Serial.println();

    Serial.print("Power (mW) :");
    Serial.print(pwr);
    Serial.println();

    Serial.print("Speed (rpm) :");
    Serial.print(rpm);
    Serial.println();

  Serial.println("----------");  
  Serial.println("Press '1' again to read new values");
  Serial.println("----------");  
    delay(400);
    }
   


  if(menu == '0'){
  digitalWrite(ledpin, HIGH);
  Serial.println("----------");  
  Serial.println("Stopped!");
  Serial.println("----------");  
  analogWrite(FAN,0);


  }
 }
}