Smart Coin Dispenser

/*
 * Device for retrieve coins in a given amount.
 * Works Manually trough keypad presses (only 1 to 9)
 * Works remotely with a remote control.
 * Works with voice commands trough Alexa or other vice assistants. Need also an Universal Remota Controlfor home automation.
 * Make the UR learn the remote control and configura apropriate scenes and routines in Alexa.
 * 
 * Feel free to develop and improve! and please let me know.
 * 
 * Arduino Project Hub
 * NerdFatherRj - Rio de Janeiro - BRA - Dec.2020.
 * 
 */


#include <IRremote.h>
#include <ir_Lego_PF_BitStreamEncoder.h>

#include <Servo.h>
#include <Keypad.h> 
Servo Srv;

int RECV_PIN = 12;  //digital port for IR Led
float armazenavalor1;  
float armazenavalor2;
IRrecv irrecv(RECV_PIN);  
decode_results results;  

const byte LINHAS = 4; // keypad lines
const byte COLUNAS = 4; // keypad columns

const char TECLAS_MATRIZ[LINHAS][COLUNAS] = { // keyboard mapping
  {'1', '2', '3', 'A'},
  {'4', '5', '6', 'B'},
  {'7', '8', '9', 'C'},
  {'*', '0', '#', 'D'}
};

const byte PINOS_LINHAS[LINHAS] = {9, 8, 7, 6}; // keypad lines
const byte PINOS_COLUNAS[COLUNAS] = {5, 4, 3, 2}; // keypad columns
Keypad teclado_personalizado = Keypad(makeKeymap(TECLAS_MATRIZ), PINOS_LINHAS, PINOS_COLUNAS, LINHAS, COLUNAS); // keypad on

int Fora = 50; //Must calibrate to suit your needs.
int Dentro = 150; //Must calibrate to suit your needs.

void setup() {
Serial.begin(9600); 
pinMode(12,INPUT);// ir module
irrecv.enableIRIn(); // ir initialize
Srv.attach(11); 
delay(250); 
Srv.write(Fora); //lever out waiting for pushing the coins.
}

void loop() {

char leitura_teclas = teclado_personalizado.getKey(); 
  switch (leitura_teclas){

  case '1': //keypad 1 pressed and so on
  pushPull1();
break;

  case '2':
 pushPull2();
   break;

  case '3':
 pushPull3();
 break;

  case '4':
  pushPull4();
break;

  case '5':
  pushPull5();
 break;

  case '6':
 pushPull6();
 
 break;
 
  case '7':
  pushPull7;
 
break;
  case '8':
 pushPull8();
 break;
 
  case '9':
 pushPull9();
break;
    
} //end switch

/* Routines for IR control */

if (irrecv.decode(&results))  {  
    Serial.print("Valor lido : ");  
    Serial.println(results.value, HEX); 
   armazenavalor1 = (results.value); 
  irrecv.resume();  
  armazenavalor2 = (results.value);  
delay(500);


 if (armazenavalor1 == 0xFF30CF ){ //button "1" pressed  
 pushPull1();
}
irrecv.resume(); 

if (armazenavalor1 == 0xFF18E7  ){ //button "2" pressed  
pushPull2();
}
irrecv.resume(); //Le o prximo valor 
 
if (armazenavalor1 == 0xFF7A85  ){ //button "3" pressed  
pushPull3();
}

irrecv.resume(); //Le o prximo valor 

if (armazenavalor1 == 0xFF10EF  ){ //button "4" pressed  
pushPull4();
}

irrecv.resume(); //Le o prximo valor 
  
if (armazenavalor1 == 0xFF38C7  ){ //button "5" pressed  
pushPull5();
}

irrecv.resume(); //Le o prximo valor 
 
if (armazenavalor1 == 0xFF5AA5  ){ //button "6" pressed  
pushPull6();
}
irrecv.resume(); //Le o prximo valor 
  
if (armazenavalor1 == 0xFF42BD  ){ //button "7" pressed  
pushPull7();
}
irrecv.resume(); //Le o prximo valor 
 
if (armazenavalor1 == 0xFF4AB5 ){ //button "8" pressed  
pushPull8();
}

irrecv.resume(); //Le o prximo valor 
  
if (armazenavalor1 == 0xFF52AD ){ //button "9" pressed  
pushPull9();
}

irrecv.resume(); //Le o prximo valor 

 }//end if decodresults
} //end loop


  void pushPull(){
Srv.write(Dentro);
 delay(300);
  Srv.write(Fora);
  delay(300);
  }

  void pushPull1() {
pushPull();
}

 void pushPull2() {
pushPull();
pushPull();
}

 void pushPull3() {
pushPull();
pushPull();
pushPull();
}

 void pushPull4() {
pushPull();
pushPull();
pushPull();
pushPull();
}

 void pushPull5() {
pushPull();
pushPull();
pushPull();
pushPull();
pushPull();
}

 void pushPull6() {
pushPull();
pushPull();
pushPull();
pushPull();
pushPull();
pushPull();
}

 void pushPull7() {
pushPull();
pushPull();
pushPull();
pushPull();
pushPull();
pushPull();
pushPull();
}

 void pushPull8() {
pushPull();
pushPull();
pushPull();
pushPull();
pushPull();
pushPull();
pushPull();
pushPull();
}

 void pushPull9() {
pushPull();
pushPull();
pushPull();
pushPull();
pushPull();
pushPull();
pushPull();
pushPull();
pushPull();
 }