Receptor v1

#include <SoftwareSerial.h>
#include <Wire.h>
#include <LCD.h>
#include <LiquidCrystal_I2C.h>

SoftwareSerial apc220(6, 7);

#define I2C_ADDR 0x3F
#define BACKLIGHT_PIN 3
#define En 2
#define Rw 1
#define Rs 0
#define D4 4
#define D5 5
#define D6 6
#define D7 7

LiquidCrystal_I2C lcd(I2C_ADDR,En,Rw,Rs,D4,D5,D6,D7);

String input;
const int led = 8;


void setup()
{
  Serial.begin(9600);
  apc220.begin(9600);
   lcd.setBacklightPin(BACKLIGHT_PIN,POSITIVE);
  lcd.setBacklight(HIGH);
 // Inicializa o display LCD 16x2
 lcd.begin (16, 2);
 // Liga a luz de fundo do LCD
 lcd.setBacklight(HIGH);
 pinMode(led,OUTPUT);
}

void loop()
{

  input = apc220.read();
  Serial.println(input);
  delay(10);


  if (apc220.read() == 10){
  if (apc220.read() == 10){
 digitalWrite(led,HIGH);
}else{digitalWrite(led,LOW);}
  lcd.clear();
 lcd.setCursor(2, 0);
 lcd.print("1 aula");
 delay (100);}


  if (apc220.read() == 50){
 if (apc220.read() == 50){
 digitalWrite(led,HIGH);
}else{digitalWrite(led,LOW);}
  lcd.clear();
 lcd.setCursor(2, 0);
 lcd.print("2 aula");
 delay (100);}



  if (apc220.read() == 100){
  if (apc220.read() == 100){
 digitalWrite(led,HIGH);
}else{
digitalWrite(led,LOW);}
  lcd.clear();
 lcd.setCursor(2, 0);
 lcd.print("recreio");
 delay (100);}


  if (apc220.read() == 53){
 if (apc220.read() == 53){
 digitalWrite(led,HIGH);
}else{
digitalWrite(led,LOW);}
  lcd.clear();
 lcd.setCursor(2, 0);
 lcd.print("3 aula");
 delay (100);
 }


  if (apc220.read() == 48){
     if (apc220.read() == 48){
 digitalWrite(led,HIGH);
}if (apc220.read()== -1) {
digitalWrite(led,LOW);}
  lcd.clear();
 lcd.setCursor(2, 0);
 lcd.print("saida");
 delay (100);}

if (apc220.read()== -1){
digitalWrite(led,LOW);}


}