#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2); // set the LCD address to 0x27, if new version please use 0x3F instead.

#define PRINTS(s)   { lcd.init(); lcd.backlight(); lcd.setCursor(0, 0); lcd.print(F(s)); }
#define PRINT(s,v)  { lcd.init(); lcd.backlight(); lcd.setCursor(0, 0); lcd.print(F(s)); lcd.setCursor(0, 1); lcd.print(v);  }
#define PRINTX(s,v) { lcd.init(); lcd.backlight(); lcd.setCursor(0, 0); lcd.print(F(s)); lcd.setCursor(0, 1); lcd.print(F("0x")); lcd.setCursor(2, 1); lcd.print(v, HEX);}
#define PRINTB(s,v) { lcd.init(); lcd.backlight(); lcd.setCursor(0, 0); lcd.print(F(s)); lcd.setCursor(0, 1); lcd.print(F("b")); lcd.setCursor(2, 1); lcd.print(v, BIN);}
#define PRINTE1(s)   { lcd.init(); lcd.backlight(); lcd.setCursor(0, 0); lcd.print((s)); }
#define PRINTE2(s)   { lcd.setCursor(0, 1); lcd.print((s)); }
uint8_t desiredpwm = 0;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(3, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(6, OUTPUT);
  pinMode(11, OUTPUT);
  pinMode(8, INPUT_PULLUP);
  pinMode(A0, INPUT_PULLUP);
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(3, LOW);
  digitalWrite(5, LOW);
  //digitalWrite(6, LOW);
  desiredpwm = map(analogRead(A0),0,1023,0,255);
  Serial.println(desiredpwm);
  PRINTE1(analogRead(A0));
  analogWrite(11,desiredpwm);
  PRINTE2(pulseIn(8,HIGH,4000));
  analogWrite(6,desiredpwm);
}