I need help for code of vending machine

Using Arduino Project Guidance
1

Hello friends. I do a vending machine with: coin acceptor, keypad 3x4, 7 servo motors, lcd i2c. I dont no how to do the code. can anyone help me?
i do that. is that right? @k1zzi

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

const int coinInt = 1;
int money = 0;
int cents = 0;

int posi = 0;
int pos = 0;
int door = 0;

byte idx; // use as index into
int array[ 10 ]; // by default, all are 0 at start
Servo myservo[ 6 ]; // servos now in an array
int Value[ 6 ]; // by default all are = 0
int motor[ 6 ];
byte motorsRunning;

int total = 0;

boolean entered = false;

const byte ROWS = 3;
const byte COLS = 3;

char keys [ROWS] [COLS] = {
  {'1', '2', '3',},
  {'4', '5', '6',},
  {'*', '0', '#',}
};

byte rowPins[] = { 13, 12, 11 };
byte colPins[] = { 10, 9, 8 };

Keypad kpd = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );

void setup()
{
  pinMode(7, OUTPUT);
  pinMode(6, OUTPUT);
  Serial.begin(9600);  // why is this less than 115200?

  attachInterrupt(coinInt, coinInserted, RISING);

  myservo[ 0 ].attach(4);
  myservo[ 1 ].attach(5);
  myservo[ 0 ].write(pos);
  myservo[ 1 ].write(pos);
}

void coinInserted()
{
  money = money + 10;
  showMeTheMoney( money );
}

void showMeTheMoney( int howMuch )
{
  Serial.print( F( "RM" ));           // print RM first
  Serial.print( howMuch / 100 );
  Serial.print( F( "." ));

  cents = howMuch % 100;
  if ( cents < 10 )
  {
    Serial.print( F( "0" ));
  }
  Serial.print( cents );
}

void loop()
{
  char key = kpd.getKey();
  if (key)
  {
    switch ( key )
    {
      case '1' :
        {
          if (posi < 6)
          {
            array[posi] = 10;//1st prodct price
            posi = posi + 1;
            Serial.println("Value 1: ");
            Serial.println(key);
            Serial.println("");
          }
          motor[ 0 ] += 1;
          motorsRunning = 1;
        }
        break;

      case '2' :
        {
          if (posi < 6)
          {
            array[posi] = 20;//2nd product price
            posi = posi + 1;
            Serial.println("Value 2: ");
            Serial.println(key);
            Serial.println("");
          }
          motor[ 1 ] += 1;
          motorsRunning = 1;
        }
        break;

      case '3' :
        {
          if (posi < 6)
          {
            array[posi] = 30;//3rd product price
            posi = posi + 1;
            Serial.println("Value 3: ");
            Serial.println(key);
            Serial.println("");
          }
        }
        break;

      case '4' :
        {
          if (posi < 6)
          {
            array[posi] = 40;//4th product price
            posi = posi + 1;
            Serial.println("Value 4: ");
            Serial.println(key);
            Serial.println("");
          }
        }
        break;

      case '5' :
        {
          if (posi < 6)
          {
            array[posi] = 50;//5th product price
            posi = posi + 1;
            Serial.println("Value 5: ");
            Serial.println(key);
            Serial.println("");
          }
        }
        break;

      case '6' :
        {
          if (posi < 6)
          {
            array[posi] = 60;//6th product price
            posi = posi + 1;
            Serial.println("Value 6: ");
            Serial.println(key);
            Serial.println("");
          }
        }
        break;

      case '#' : //enter key and total price
        {
          total = 0;
          for ( idx = 0; idx < 6; idx++ )
          {
            Value[ idx ] = array[ idx ];
            total += Value[ idx ];
          }

          Serial.println("Total:");
          Serial.println("TOTAL: RM ");// at here, it got some problem. the TOTAL show be RM 1.00 it keep show me RM100 without "."
          showMeTheMoney( total );
          entered = true;
        }
    }


    if (money >= total && entered == true)
    {

      Serial.println("OKAY");
      delay(2000);

      for ( idx = 0; idx < 6; idx++ )
      {
        if (motor[ idx ] != 0)
        {
          for ( byte x = 0; x < motor[ idx ]; x++ )
          {
            pos = 5;
            myservo[ idx ].write(pos);
            delay(3000);
            pos = 0;
            myservo[ idx ].write(pos);
            delay(3000);
            Serial.print( idx + 1 );
            Serial.println(": ");
          }
          motor[ idx ] = 0;
        }
      }

      door = 1;
//    if (( motorsRunning == 0 ) && ( door == 1 )) // silly, door just got set to 1
      if ( motorsRunning == 0 )
      {
        Serial.println("door open");
        digitalWrite(7, HIGH);
        analogWrite(6, 50);
        delay(4000);
        digitalWrite(6, LOW);
        delay(4000);
        digitalWrite(7, LOW);
        analogWrite(6, 50);
        delay(4000);
        digitalWrite(6, LOW);
        Serial.println("door close");
      }

      motorsRunning = 0;
      door = 0;
      posi = 0;

      for ( idx = 0; idx < 6; idx++ )
      {
        Value[ idx ] = 0;
      }
      total = 0;
      money = 0;
      for ( byte x = 0; x < 3; x++ ) // why only clear the 1st 3 elements?
      {
        array[x] = 0;
      }
      entered = false;

    }
  }
}
```[quote="roso_2020, post:1, topic:893185, full:true"]
Hello friends. I do a vending machine with: coin acceptor, keypad 3x4, 7 servo motors, lcd i2c. I dont no how to do the code. can anyone help me?

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

const int coinInt = 1;
int money = 0;
int cents = 0;

int posi = 0;
int pos = 0;
int door = 0;

byte idx; // use as index into
int array[ 10 ]; // by default, all are 0 at start
Servo myservo[ 6 ]; // servos now in an array
int Value[ 6 ]; // by default all are = 0
int motor[ 6 ];
byte motorsRunning;

int total = 0;

boolean entered = false;

const byte ROWS = 3;
const byte COLS = 3;

char keys [ROWS] [COLS] = {
{'1', '2', '3',},
{'4', '5', '6',},
{'*', '0', '#',}
};

byte rowPins[] = { 13, 12, 11 };
byte colPins[] = { 10, 9, 8 };

Keypad kpd = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );

void setup()
{
pinMode(7, OUTPUT);
pinMode(6, OUTPUT);
Serial.begin(9600); // why is this less than 115200?

attachInterrupt(coinInt, coinInserted, RISING);

myservo[ 0 ].attach(4);
myservo[ 1 ].attach(5);
myservo[ 0 ].write(pos);
myservo[ 1 ].write(pos);
}

void coinInserted()
{
money = money + 10;
showMeTheMoney( money );
}

void showMeTheMoney( int howMuch )
{
Serial.print( F( "RM" )); // print RM first
Serial.print( howMuch / 100 );
Serial.print( F( "." ));

cents = howMuch % 100;
if ( cents < 10 )
{
Serial.print( F( "0" ));
}
Serial.print( cents );
}

void loop()
{
char key = kpd.getKey();
if (key)
{
switch ( key )
{
case '1' :
{
if (posi < 6)
{
array[posi] = 10;//1st prodct price
posi = posi + 1;
Serial.println("Value 1: ");
Serial.println(key);
Serial.println("");
}
motor[ 0 ] += 1;
motorsRunning = 1;
}
break;

  case '2' :
    {
      if (posi < 6)
      {
        array[posi] = 20;//2nd product price
        posi = posi + 1;
        Serial.println("Value 2: ");
        Serial.println(key);
        Serial.println("");
      }
      motor[ 1 ] += 1;
      motorsRunning = 1;
    }
    break;

  case '3' :
    {
      if (posi < 6)
      {
        array[posi] = 30;//3rd product price
        posi = posi + 1;
        Serial.println("Value 3: ");
        Serial.println(key);
        Serial.println("");
      }
    }
    break;

  case '4' :
    {
      if (posi < 6)
      {
        array[posi] = 40;//4th product price
        posi = posi + 1;
        Serial.println("Value 4: ");
        Serial.println(key);
        Serial.println("");
      }
    }
    break;

  case '5' :
    {
      if (posi < 6)
      {
        array[posi] = 50;//5th product price
        posi = posi + 1;
        Serial.println("Value 5: ");
        Serial.println(key);
        Serial.println("");
      }
    }
    break;

  case '6' :
    {
      if (posi < 6)
      {
        array[posi] = 60;//6th product price
        posi = posi + 1;
        Serial.println("Value 6: ");
        Serial.println(key);
        Serial.println("");
      }
    }
    break;

  case '#' : //enter key and total price
    {
      total = 0;
      for ( idx = 0; idx < 6; idx++ )
      {
        Value[ idx ] = array[ idx ];
        total += Value[ idx ];
      }

      Serial.println("Total:");
      Serial.println("TOTAL: RM ");// at here, it got some problem. the TOTAL show be RM 1.00 it keep show me RM100 without "."
      showMeTheMoney( total );
      entered = true;
    }
}


if (money >= total && entered == true)
{

  Serial.println("OKAY");
  delay(2000);

  for ( idx = 0; idx < 6; idx++ )
  {
    if (motor[ idx ] != 0)
    {
      for ( byte x = 0; x < motor[ idx ]; x++ )
      {
        pos = 5;
        myservo[ idx ].write(pos);
        delay(3000);
        pos = 0;
        myservo[ idx ].write(pos);
        delay(3000);
        Serial.print( idx + 1 );
        Serial.println(": ");
      }
      motor[ idx ] = 0;
    }
  }

  door = 1;

// if (( motorsRunning == 0 ) && ( door == 1 )) // silly, door just got set to 1
if ( motorsRunning == 0 )
{
Serial.println("door open");
digitalWrite(7, HIGH);
analogWrite(6, 50);
delay(4000);
digitalWrite(6, LOW);
delay(4000);
digitalWrite(7, LOW);
analogWrite(6, 50);
delay(4000);
digitalWrite(6, LOW);
Serial.println("door close");
}

  motorsRunning = 0;
  door = 0;
  posi = 0;

  for ( idx = 0; idx < 6; idx++ )
  {
    Value[ idx ] = 0;
  }
  total = 0;
  money = 0;
  for ( byte x = 0; x < 3; x++ ) // why only clear the 1st 3 elements?
  {
    array[x] = 0;
  }
  entered = false;

}

}
}

[/quote][quote="roso_2020, post:1, topic:893185, full:true"]
Hello friends. I do a vending machine with: coin acceptor, keypad 3x4, 7 servo motors, lcd i2c. I dont no how to do the code. can anyone help me?

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

const int coinInt = 1;
int money = 0;
int cents = 0;

int posi = 0;
int pos = 0;
int door = 0;

byte idx; // use as index into
int array[ 10 ]; // by default, all are 0 at start
Servo myservo[ 6 ]; // servos now in an array
int Value[ 6 ]; // by default all are = 0
int motor[ 6 ];
byte motorsRunning;

int total = 0;

boolean entered = false;

const byte ROWS = 3;
const byte COLS = 3;

char keys [ROWS] [COLS] = {
{'1', '2', '3',},
{'4', '5', '6',},
{'*', '0', '#',}
};

byte rowPins[] = { 13, 12, 11 };
byte colPins[] = { 10, 9, 8 };

Keypad kpd = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );

void setup()
{
pinMode(7, OUTPUT);
pinMode(6, OUTPUT);
Serial.begin(9600); // why is this less than 115200?

attachInterrupt(coinInt, coinInserted, RISING);

myservo[ 0 ].attach(4);
myservo[ 1 ].attach(5);
myservo[ 0 ].write(pos);
myservo[ 1 ].write(pos);
}

void coinInserted()
{
money = money + 10;
showMeTheMoney( money );
}

void showMeTheMoney( int howMuch )
{
Serial.print( F( "RM" )); // print RM first
Serial.print( howMuch / 100 );
Serial.print( F( "." ));

cents = howMuch % 100;
if ( cents < 10 )
{
Serial.print( F( "0" ));
}
Serial.print( cents );
}

void loop()
{
char key = kpd.getKey();
if (key)
{
switch ( key )
{
case '1' :
{
if (posi < 6)
{
array[posi] = 10;//1st prodct price
posi = posi + 1;
Serial.println("Value 1: ");
Serial.println(key);
Serial.println("");
}
motor[ 0 ] += 1;
motorsRunning = 1;
}
break;

  case '2' :
    {
      if (posi < 6)
      {
        array[posi] = 20;//2nd product price
        posi = posi + 1;
        Serial.println("Value 2: ");
        Serial.println(key);
        Serial.println("");
      }
      motor[ 1 ] += 1;
      motorsRunning = 1;
    }
    break;

  case '3' :
    {
      if (posi < 6)
      {
        array[posi] = 30;//3rd product price
        posi = posi + 1;
        Serial.println("Value 3: ");
        Serial.println(key);
        Serial.println("");
      }
    }
    break;

  case '4' :
    {
      if (posi < 6)
      {
        array[posi] = 40;//4th product price
        posi = posi + 1;
        Serial.println("Value 4: ");
        Serial.println(key);
        Serial.println("");
      }
    }
    break;

  case '5' :
    {
      if (posi < 6)
      {
        array[posi] = 50;//5th product price
        posi = posi + 1;
        Serial.println("Value 5: ");
        Serial.println(key);
        Serial.println("");
      }
    }
    break;

  case '6' :
    {
      if (posi < 6)
      {
        array[posi] = 60;//6th product price
        posi = posi + 1;
        Serial.println("Value 6: ");
        Serial.println(key);
        Serial.println("");
      }
    }
    break;

  case '#' : //enter key and total price
    {
      total = 0;
      for ( idx = 0; idx < 6; idx++ )
      {
        Value[ idx ] = array[ idx ];
        total += Value[ idx ];
      }

      Serial.println("Total:");
      Serial.println("TOTAL: RM ");// at here, it got some problem. the TOTAL show be RM 1.00 it keep show me RM100 without "."
      showMeTheMoney( total );
      entered = true;
    }
}


if (money >= total && entered == true)
{

  Serial.println("OKAY");
  delay(2000);

  for ( idx = 0; idx < 6; idx++ )
  {
    if (motor[ idx ] != 0)
    {
      for ( byte x = 0; x < motor[ idx ]; x++ )
      {
        pos = 5;
        myservo[ idx ].write(pos);
        delay(3000);
        pos = 0;
        myservo[ idx ].write(pos);
        delay(3000);
        Serial.print( idx + 1 );
        Serial.println(": ");
      }
      motor[ idx ] = 0;
    }
  }

  door = 1;

// if (( motorsRunning == 0 ) && ( door == 1 )) // silly, door just got set to 1
if ( motorsRunning == 0 )
{
Serial.println("door open");
digitalWrite(7, HIGH);
analogWrite(6, 50);
delay(4000);
digitalWrite(6, LOW);
delay(4000);
digitalWrite(7, LOW);
analogWrite(6, 50);
delay(4000);
digitalWrite(6, LOW);
Serial.println("door close");
}

  motorsRunning = 0;
  door = 0;
  posi = 0;

  for ( idx = 0; idx < 6; idx++ )
  {
    Value[ idx ] = 0;
  }
  total = 0;
  money = 0;
  for ( byte x = 0; x < 3; x++ ) // why only clear the 1st 3 elements?
  {
    array[x] = 0;
  }
  entered = false;

}

}
}

Hello friends. I do a vending machine with: coin acceptor, keypad 3x4, 7 servo motors, lcd i2c. I dont no how to do the code. can anyone help me?

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

const int coinInt = 1;
int money = 0;
int cents = 0;

int posi = 0;
int pos = 0;
int door = 0;

byte idx; // use as index into
int array[ 10 ]; // by default, all are 0 at start
Servo myservo[ 6 ]; // servos now in an array
int Value[ 6 ]; // by default all are = 0
int motor[ 6 ];
byte motorsRunning;

int total = 0;

boolean entered = false;

const byte ROWS = 3;
const byte COLS = 3;

char keys [ROWS] [COLS] = {
{'1', '2', '3',},
{'4', '5', '6',},
{'*', '0', '#',}
};

byte rowPins[] = { 13, 12, 11 };
byte colPins[] = { 10, 9, 8 };

Keypad kpd = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );

void setup()
{
pinMode(7, OUTPUT);
pinMode(6, OUTPUT);
Serial.begin(9600); // why is this less than 115200?

attachInterrupt(coinInt, coinInserted, RISING);

myservo[ 0 ].attach(4);
myservo[ 1 ].attach(5);
myservo[ 0 ].write(pos);
myservo[ 1 ].write(pos);
}

void coinInserted()
{
money = money + 10;
showMeTheMoney( money );
}

void showMeTheMoney( int howMuch )
{
Serial.print( F( "RM" )); // print RM first
Serial.print( howMuch / 100 );
Serial.print( F( "." ));

cents = howMuch % 100;
if ( cents < 10 )
{
Serial.print( F( "0" ));
}
Serial.print( cents );
}

void loop()
{
char key = kpd.getKey();
if (key)
{
switch ( key )
{
case '1' :
{
if (posi < 6)
{
array[posi] = 10;//1st prodct price
posi = posi + 1;
Serial.println("Value 1: ");
Serial.println(key);
Serial.println("");
}
motor[ 0 ] += 1;
motorsRunning = 1;
}
break;

  case '2' :
    {
      if (posi < 6)
      {
        array[posi] = 20;//2nd product price
        posi = posi + 1;
        Serial.println("Value 2: ");
        Serial.println(key);
        Serial.println("");
      }
      motor[ 1 ] += 1;
      motorsRunning = 1;
    }
    break;

  case '3' :
    {
      if (posi < 6)
      {
        array[posi] = 30;//3rd product price
        posi = posi + 1;
        Serial.println("Value 3: ");
        Serial.println(key);
        Serial.println("");
      }
    }
    break;

  case '4' :
    {
      if (posi < 6)
      {
        array[posi] = 40;//4th product price
        posi = posi + 1;
        Serial.println("Value 4: ");
        Serial.println(key);
        Serial.println("");
      }
    }
    break;

  case '5' :
    {
      if (posi < 6)
      {
        array[posi] = 50;//5th product price
        posi = posi + 1;
        Serial.println("Value 5: ");
        Serial.println(key);
        Serial.println("");
      }
    }
    break;

  case '6' :
    {
      if (posi < 6)
      {
        array[posi] = 60;//6th product price
        posi = posi + 1;
        Serial.println("Value 6: ");
        Serial.println(key);
        Serial.println("");
      }
    }
    break;

  case '#' : //enter key and total price
    {
      total = 0;
      for ( idx = 0; idx < 6; idx++ )
      {
        Value[ idx ] = array[ idx ];
        total += Value[ idx ];
      }

      Serial.println("Total:");
      Serial.println("TOTAL: RM ");// at here, it got some problem. the TOTAL show be RM 1.00 it keep show me RM100 without "."
      showMeTheMoney( total );
      entered = true;
    }
}


if (money >= total && entered == true)
{

  Serial.println("OKAY");
  delay(2000);

  for ( idx = 0; idx < 6; idx++ )
  {
    if (motor[ idx ] != 0)
    {
      for ( byte x = 0; x < motor[ idx ]; x++ )
      {
        pos = 5;
        myservo[ idx ].write(pos);
        delay(3000);
        pos = 0;
        myservo[ idx ].write(pos);
        delay(3000);
        Serial.print( idx + 1 );
        Serial.println(": ");
      }
      motor[ idx ] = 0;
    }
  }

  door = 1;

// if (( motorsRunning == 0 ) && ( door == 1 )) // silly, door just got set to 1
if ( motorsRunning == 0 )
{
Serial.println("door open");
digitalWrite(7, HIGH);
analogWrite(6, 50);
delay(4000);
digitalWrite(6, LOW);
delay(4000);
digitalWrite(7, LOW);
analogWrite(6, 50);
delay(4000);
digitalWrite(6, LOW);
Serial.println("door close");
}

  motorsRunning = 0;
  door = 0;
  posi = 0;

  for ( idx = 0; idx < 6; idx++ )
  {
    Value[ idx ] = 0;
  }
  total = 0;
  money = 0;
  for ( byte x = 0; x < 3; x++ ) // why only clear the 1st 3 elements?
  {
    array[x] = 0;
  }
  entered = false;

}

}
}

[/quote]
[/quote]

[quote="roso_2020, post:1, topic:893185, full:true"]
Hello friends. I do a vending machine with: coin acceptor, keypad 3x4, 7 servo motors, lcd i2c. I dont no how to do the code. can anyone help me?

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

const int coinInt = 1;
int money = 0;
int cents = 0;

int posi = 0;
int pos = 0;
int door = 0;

byte idx; // use as index into
int array[ 10 ]; // by default, all are 0 at start
Servo myservo[ 6 ]; // servos now in an array
int Value[ 6 ]; // by default all are = 0
int motor[ 6 ];
byte motorsRunning;

int total = 0;

boolean entered = false;

const byte ROWS = 3;
const byte COLS = 3;

char keys [ROWS] [COLS] = {
{'1', '2', '3',},
{'4', '5', '6',},
{'*', '0', '#',}
};

byte rowPins[] = { 13, 12, 11 };
byte colPins[] = { 10, 9, 8 };

Keypad kpd = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );

void setup()
{
pinMode(7, OUTPUT);
pinMode(6, OUTPUT);
Serial.begin(9600); // why is this less than 115200?

attachInterrupt(coinInt, coinInserted, RISING);

myservo[ 0 ].attach(4);
myservo[ 1 ].attach(5);
myservo[ 0 ].write(pos);
myservo[ 1 ].write(pos);
}

void coinInserted()
{
money = money + 10;
showMeTheMoney( money );
}

void showMeTheMoney( int howMuch )
{
Serial.print( F( "RM" )); // print RM first
Serial.print( howMuch / 100 );
Serial.print( F( "." ));

cents = howMuch % 100;
if ( cents < 10 )
{
Serial.print( F( "0" ));
}
Serial.print( cents );
}

void loop()
{
char key = kpd.getKey();
if (key)
{
switch ( key )
{
case '1' :
{
if (posi < 6)
{
array[posi] = 10;//1st prodct price
posi = posi + 1;
Serial.println("Value 1: ");
Serial.println(key);
Serial.println("");
}
motor[ 0 ] += 1;
motorsRunning = 1;
}
break;

  case '2' :
    {
      if (posi < 6)
      {
        array[posi] = 20;//2nd product price
        posi = posi + 1;
        Serial.println("Value 2: ");
        Serial.println(key);
        Serial.println("");
      }
      motor[ 1 ] += 1;
      motorsRunning = 1;
    }
    break;

  case '3' :
    {
      if (posi < 6)
      {
        array[posi] = 30;//3rd product price
        posi = posi + 1;
        Serial.println("Value 3: ");
        Serial.println(key);
        Serial.println("");
      }
    }
    break;

  case '4' :
    {
      if (posi < 6)
      {
        array[posi] = 40;//4th product price
        posi = posi + 1;
        Serial.println("Value 4: ");
        Serial.println(key);
        Serial.println("");
      }
    }
    break;

  case '5' :
    {
      if (posi < 6)
      {
        array[posi] = 50;//5th product price
        posi = posi + 1;
        Serial.println("Value 5: ");
        Serial.println(key);
        Serial.println("");
      }
    }
    break;

  case '6' :
    {
      if (posi < 6)
      {
        array[posi] = 60;//6th product price
        posi = posi + 1;
        Serial.println("Value 6: ");
        Serial.println(key);
        Serial.println("");
      }
    }
    break;

  case '#' : //enter key and total price
    {
      total = 0;
      for ( idx = 0; idx < 6; idx++ )
      {
        Value[ idx ] = array[ idx ];
        total += Value[ idx ];
      }

      Serial.println("Total:");
      Serial.println("TOTAL: RM ");// at here, it got some problem. the TOTAL show be RM 1.00 it keep show me RM100 without "."
      showMeTheMoney( total );
      entered = true;
    }
}


if (money >= total && entered == true)
{

  Serial.println("OKAY");
  delay(2000);

  for ( idx = 0; idx < 6; idx++ )
  {
    if (motor[ idx ] != 0)
    {
      for ( byte x = 0; x < motor[ idx ]; x++ )
      {
        pos = 5;
        myservo[ idx ].write(pos);
        delay(3000);
        pos = 0;
        myservo[ idx ].write(pos);
        delay(3000);
        Serial.print( idx + 1 );
        Serial.println(": ");
      }
      motor[ idx ] = 0;
    }
  }

  door = 1;

// if (( motorsRunning == 0 ) && ( door == 1 )) // silly, door just got set to 1
if ( motorsRunning == 0 )
{
Serial.println("door open");
digitalWrite(7, HIGH);
analogWrite(6, 50);
delay(4000);
digitalWrite(6, LOW);
delay(4000);
digitalWrite(7, LOW);
analogWrite(6, 50);
delay(4000);
digitalWrite(6, LOW);
Serial.println("door close");
}

  motorsRunning = 0;
  door = 0;
  posi = 0;

  for ( idx = 0; idx < 6; idx++ )
  {
    Value[ idx ] = 0;
  }
  total = 0;
  money = 0;
  for ( byte x = 0; x < 3; x++ ) // why only clear the 1st 3 elements?
  {
    array[x] = 0;
  }
  entered = false;

}

}
}

Hello friends. I do a vending machine with: coin acceptor, keypad 3x4, 7 servo motors, lcd i2c. I dont no how to do the code. can anyone help me?

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

const int coinInt = 1;
int money = 0;
int cents = 0;

int posi = 0;
int pos = 0;
int door = 0;

byte idx; // use as index into
int array[ 10 ]; // by default, all are 0 at start
Servo myservo[ 6 ]; // servos now in an array
int Value[ 6 ]; // by default all are = 0
int motor[ 6 ];
byte motorsRunning;

int total = 0;

boolean entered = false;

const byte ROWS = 3;
const byte COLS = 3;

char keys [ROWS] [COLS] = {
{'1', '2', '3',},
{'4', '5', '6',},
{'*', '0', '#',}
};

byte rowPins[] = { 13, 12, 11 };
byte colPins[] = { 10, 9, 8 };

Keypad kpd = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );

void setup()
{
pinMode(7, OUTPUT);
pinMode(6, OUTPUT);
Serial.begin(9600); // why is this less than 115200?

attachInterrupt(coinInt, coinInserted, RISING);

myservo[ 0 ].attach(4);
myservo[ 1 ].attach(5);
myservo[ 0 ].write(pos);
myservo[ 1 ].write(pos);
}

void coinInserted()
{
money = money + 10;
showMeTheMoney( money );
}

void showMeTheMoney( int howMuch )
{
Serial.print( F( "RM" )); // print RM first
Serial.print( howMuch / 100 );
Serial.print( F( "." ));

cents = howMuch % 100;
if ( cents < 10 )
{
Serial.print( F( "0" ));
}
Serial.print( cents );
}

void loop()
{
char key = kpd.getKey();
if (key)
{
switch ( key )
{
case '1' :
{
if (posi < 6)
{
array[posi] = 10;//1st prodct price
posi = posi + 1;
Serial.println("Value 1: ");
Serial.println(key);
Serial.println("");
}
motor[ 0 ] += 1;
motorsRunning = 1;
}
break;

  case '2' :
    {
      if (posi < 6)
      {
        array[posi] = 20;//2nd product price
        posi = posi + 1;
        Serial.println("Value 2: ");
        Serial.println(key);
        Serial.println("");
      }
      motor[ 1 ] += 1;
      motorsRunning = 1;
    }
    break;

  case '3' :
    {
      if (posi < 6)
      {
        array[posi] = 30;//3rd product price
        posi = posi + 1;
        Serial.println("Value 3: ");
        Serial.println(key);
        Serial.println("");
      }
    }
    break;

  case '4' :
    {
      if (posi < 6)
      {
        array[posi] = 40;//4th product price
        posi = posi + 1;
        Serial.println("Value 4: ");
        Serial.println(key);
        Serial.println("");
      }
    }
    break;

  case '5' :
    {
      if (posi < 6)
      {
        array[posi] = 50;//5th product price
        posi = posi + 1;
        Serial.println("Value 5: ");
        Serial.println(key);
        Serial.println("");
      }
    }
    break;

  case '6' :
    {
      if (posi < 6)
      {
        array[posi] = 60;//6th product price
        posi = posi + 1;
        Serial.println("Value 6: ");
        Serial.println(key);
        Serial.println("");
      }
    }
    break;

  case '#' : //enter key and total price
    {
      total = 0;
      for ( idx = 0; idx < 6; idx++ )
      {
        Value[ idx ] = array[ idx ];
        total += Value[ idx ];
      }

      Serial.println("Total:");
      Serial.println("TOTAL: RM ");// at here, it got some problem. the TOTAL show be RM 1.00 it keep show me RM100 without "."
      showMeTheMoney( total );
      entered = true;
    }
}


if (money >= total && entered == true)
{

  Serial.println("OKAY");
  delay(2000);

  for ( idx = 0; idx < 6; idx++ )
  {
    if (motor[ idx ] != 0)
    {
      for ( byte x = 0; x < motor[ idx ]; x++ )
      {
        pos = 5;
        myservo[ idx ].write(pos);
        delay(3000);
        pos = 0;
        myservo[ idx ].write(pos);
        delay(3000);
        Serial.print( idx + 1 );
        Serial.println(": ");
      }
      motor[ idx ] = 0;
    }
  }

  door = 1;

// if (( motorsRunning == 0 ) && ( door == 1 )) // silly, door just got set to 1
if ( motorsRunning == 0 )
{
Serial.println("door open");
digitalWrite(7, HIGH);
analogWrite(6, 50);
delay(4000);
digitalWrite(6, LOW);
delay(4000);
digitalWrite(7, LOW);
analogWrite(6, 50);
delay(4000);
digitalWrite(6, LOW);
Serial.println("door close");
}

  motorsRunning = 0;
  door = 0;
  posi = 0;

  for ( idx = 0; idx < 6; idx++ )
  {
    Value[ idx ] = 0;
  }
  total = 0;
  money = 0;
  for ( byte x = 0; x < 3; x++ ) // why only clear the 1st 3 elements?
  {
    array[x] = 0;
  }
  entered = false;

}

}
}

[/quote]
[/quote]
2

Please edit your post to add code tags, as described in the how to use the forum post.

Then tell us what goes wrong.

3

WTF?

How many programs did you post?

Why did you post so many programs?

4

Probably because he's new?
OP, what part of the planet are you located?

-jim lee

5

@roso_2020, your topic has been moved to a more suitable location on the forum. Introductory Tutorials is for tutorials that e.g. you write, not for questions. Feel free to write a tutorial once you have solved your problem :wink:

Please edit your post, select the code and click the </> button; next save your post. The prevents mangling of your code by the forum software (e.g. [] will not change to []), makes it easier to read and easier to copy.

6

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