Snacks Vending Machine Powered By Arduino

Create a Vending Machine, powered by Arduino microcontroller, using "any cheap and easy to get" components available in local store.

Jan 15, 2017

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vending

vending machine

Components and supplies

DC Motor 6V include Wheel

Relay (generic)

Push Button

Arduino UNO

Sensor Shield

LED (generic)

Power Supply 6V for DC motor

Distance interupter (infrared/optocoupler) sensor, used for coin sensor number 2

Infrared (reflective) or line follower sensor, used for product detection

Proximity (electromagnetic) sensor, used for coin sensor number 1

LCD (Nokia 5110 LCD)

Apps and platforms

Arduino IDE

Solidworks

Project description

Code

Source code for Snacks Vending Machine

arduino

This is source code i used for this vending machine project

1const byte SIAP = 0;
2const byte KOIN_MASUK1 = 1;
3const byte KOIN_MASUK2  = 2;
4const byte KOIN_MASUK3 = 3;
5const byte KOIN_MASUK4 = 4;
6const byte  KOIN_MASUK5 = 5;
7const byte KOIN_MASUK6 = 6;
8const byte KOIN_MASUK7 = 7;
9const  byte SALDO_500 = 8;
10const byte SALDO_500500 = 9;
11const byte SALDO_500500500  = 10;
12const byte SALDO_500500500500 = 11;
13const byte SALDO_5005005001000 =  12;
14const byte SALDO_5001000 = 13;
15const byte SALDO_5001000500 = 14;
16const  byte SALDO_50010001000 = 15;
17const byte SALDO_5005001000 = 16;
18const byte  SALDO_1000 = 17;
19const byte SALDO_10001000 = 18;
20const byte SALDO_1000500  = 19;
21const byte SALDO_1000500500 = 20;
22const byte SALDO_10005001000 = 21;
23const  byte KOIN_KELUAR = 22;
24byte state = SIAP;
25const float jeda_waktu = 876;
26unsigned  long time1;
27unsigned long time2;
28unsigned long time3;
29unsigned long time4;
30unsigned  long time5;
31unsigned long time6;
32unsigned long time7;
33
34#define PIN_SCE   7
35#define PIN_RESET 6
36#define PIN_DC    5
37#define PIN_SDIN  4
38#define  PIN_SCLK  3
39#define LCD_C     LOW
40#define LCD_D     HIGH
41#define LCD_X     84
42#define LCD_Y     48
43
44static const byte ASCII[][5] =
45{
46  {0x00,  0x00, 0x00, 0x00, 0x00} // 20
47  , {0x00, 0x00, 0x5f, 0x00, 0x00} // 21 !
48  , {0x00, 0x07, 0x00, 0x07, 0x00} // 22 "
49  , {0x14, 0x7f, 0x14, 0x7f, 0x14}  // 23 #
50  , {0x24, 0x2a, 0x7f, 0x2a, 0x12} // 24 $
51  , {0x23, 0x13, 0x08,  0x64, 0x62} // 25 %
52  , {0x36, 0x49, 0x55, 0x22, 0x50} // 26 &
53  , {0x00,  0x05, 0x03, 0x00, 0x00} // 27 '
54  , {0x00, 0x1c, 0x22, 0x41, 0x00} // 28 (
55  , {0x00, 0x41, 0x22, 0x1c, 0x00} // 29 )
56  , {0x14, 0x08, 0x3e, 0x08, 0x14}  // 2a *
57  , {0x08, 0x08, 0x3e, 0x08, 0x08} // 2b +
58  , {0x00, 0x50, 0x30,  0x00, 0x00} // 2c ,
59  , {0x08, 0x08, 0x08, 0x08, 0x08} // 2d -
60  , {0x00,  0x60, 0x60, 0x00, 0x00} // 2e .
61  , {0x20, 0x10, 0x08, 0x04, 0x02} // 2f /
62  , {0x3e, 0x51, 0x49, 0x45, 0x3e} // 30 0
63  , {0x00, 0x42, 0x7f, 0x40, 0x00}  // 31 1
64  , {0x42, 0x61, 0x51, 0x49, 0x46} // 32 2
65  , {0x21, 0x41, 0x45,  0x4b, 0x31} // 33 3
66  , {0x18, 0x14, 0x12, 0x7f, 0x10} // 34 4
67  , {0x27,  0x45, 0x45, 0x45, 0x39} // 35 5
68  , {0x3c, 0x4a, 0x49, 0x49, 0x30} // 36 6
69  , {0x01, 0x71, 0x09, 0x05, 0x03} // 37 7
70  , {0x36, 0x49, 0x49, 0x49, 0x36}  // 38 8
71  , {0x06, 0x49, 0x49, 0x29, 0x1e} // 39 9
72  , {0x00, 0x36, 0x36,  0x00, 0x00} // 3a :
73  , {0x00, 0x56, 0x36, 0x00, 0x00} // 3b ;
74  , {0x08,  0x14, 0x22, 0x41, 0x00} // 3c <
75  , {0x14, 0x14, 0x14, 0x14, 0x14} // 3d =
76  , {0x00, 0x41, 0x22, 0x14, 0x08} // 3e >
77  , {0x02, 0x01, 0x51, 0x09, 0x06}  // 3f ?
78  , {0x32, 0x49, 0x79, 0x41, 0x3e} // 40 @
79  , {0x7e, 0x11, 0x11,  0x11, 0x7e} // 41 A
80  , {0x7f, 0x49, 0x49, 0x49, 0x36} // 42 B
81  , {0x3e,  0x41, 0x41, 0x41, 0x22} // 43 C
82  , {0x7f, 0x41, 0x41, 0x22, 0x1c} // 44 D
83  , {0x7f, 0x49, 0x49, 0x49, 0x41} // 45 E
84  , {0x7f, 0x09, 0x09, 0x09, 0x01}  // 46 F
85  , {0x3e, 0x41, 0x49, 0x49, 0x7a} // 47 G
86  , {0x7f, 0x08, 0x08,  0x08, 0x7f} // 48 H
87  , {0x00, 0x41, 0x7f, 0x41, 0x00} // 49 I
88  , {0x20,  0x40, 0x41, 0x3f, 0x01} // 4a J
89  , {0x7f, 0x08, 0x14, 0x22, 0x41} // 4b K
90  , {0x7f, 0x40, 0x40, 0x40, 0x40} // 4c L
91  , {0x7f, 0x02, 0x0c, 0x02, 0x7f}  // 4d M
92  , {0x7f, 0x04, 0x08, 0x10, 0x7f} // 4e N
93  , {0x3e, 0x41, 0x41,  0x41, 0x3e} // 4f O
94  , {0x7f, 0x09, 0x09, 0x09, 0x06} // 50 P
95  , {0x3e,  0x41, 0x51, 0x21, 0x5e} // 51 Q
96  , {0x7f, 0x09, 0x19, 0x29, 0x46} // 52 R
97  , {0x46, 0x49, 0x49, 0x49, 0x31} // 53 S
98  , {0x01, 0x01, 0x7f, 0x01, 0x01}  // 54 T
99  , {0x3f, 0x40, 0x40, 0x40, 0x3f} // 55 U
100  , {0x1f, 0x20, 0x40,  0x20, 0x1f} // 56 V
101  , {0x3f, 0x40, 0x38, 0x40, 0x3f} // 57 W
102  , {0x63,  0x14, 0x08, 0x14, 0x63} // 58 X
103  , {0x07, 0x08, 0x70, 0x08, 0x07} // 59 Y
104  , {0x61, 0x51, 0x49, 0x45, 0x43} // 5a Z
105  , {0x00, 0x7f, 0x41, 0x41, 0x00}  // 5b [
106  , {0x02, 0x04, 0x08, 0x10, 0x20} // 5c Â¥
107  , {0x00, 0x41, 0x41,  0x7f, 0x00} // 5d ]
108  , {0x04, 0x02, 0x01, 0x02, 0x04} // 5e ^
109  , {0x40,  0x40, 0x40, 0x40, 0x40} // 5f _
110  , {0x00, 0x01, 0x02, 0x04, 0x00} // 60 `
111  , {0x20, 0x54, 0x54, 0x54, 0x78} // 61 a
112  , {0x7f, 0x48, 0x44, 0x44, 0x38}  // 62 b
113  , {0x38, 0x44, 0x44, 0x44, 0x20} // 63 c
114  , {0x38, 0x44, 0x44,  0x48, 0x7f} // 64 d
115  , {0x38, 0x54, 0x54, 0x54, 0x18} // 65 e
116  , {0x08,  0x7e, 0x09, 0x01, 0x02} // 66 f
117  , {0x0c, 0x52, 0x52, 0x52, 0x3e} // 67 g
118  , {0x7f, 0x08, 0x04, 0x04, 0x78} // 68 h
119  , {0x00, 0x44, 0x7d, 0x40, 0x00}  // 69 i
120  , {0x20, 0x40, 0x44, 0x3d, 0x00} // 6a j
121  , {0x7f, 0x10, 0x28,  0x44, 0x00} // 6b k
122  , {0x00, 0x41, 0x7f, 0x40, 0x00} // 6c l
123  , {0x7c,  0x04, 0x18, 0x04, 0x78} // 6d m
124  , {0x7c, 0x08, 0x04, 0x04, 0x78} // 6e n
125  , {0x38, 0x44, 0x44, 0x44, 0x38} // 6f o
126  , {0x7c, 0x14, 0x14, 0x14, 0x08}  // 70 p
127  , {0x08, 0x14, 0x14, 0x18, 0x7c} // 71 q
128  , {0x7c, 0x08, 0x04,  0x04, 0x08} // 72 r
129  , {0x48, 0x54, 0x54, 0x54, 0x20} // 73 s
130  , {0x04,  0x3f, 0x44, 0x40, 0x20} // 74 t
131  , {0x3c, 0x40, 0x40, 0x20, 0x7c} // 75 u
132  , {0x1c, 0x20, 0x40, 0x20, 0x1c} // 76 v
133  , {0x3c, 0x40, 0x30, 0x40, 0x3c}  // 77 w
134  , {0x44, 0x28, 0x10, 0x28, 0x44} // 78 x
135  , {0x0c, 0x50, 0x50,  0x50, 0x3c} // 79 y
136  , {0x44, 0x64, 0x54, 0x4c, 0x44} // 7a z
137  , {0x00,  0x08, 0x36, 0x41, 0x00} // 7b {
138  , {0x00, 0x00, 0x7f, 0x00, 0x00} // 7c |
139  , {0x00, 0x41, 0x36, 0x08, 0x00} // 7d }
140  , {0x10, 0x08, 0x08, 0x10, 0x08}  // 7e â†�
141  , {0x78, 0x46, 0x41, 0x46, 0x78} // 7f â†’
142};
143
144void LcdWrite(byte  dc, byte data)
145{
146  digitalWrite(PIN_DC, dc);
147  digitalWrite(PIN_SCE, LOW);
148  shiftOut(PIN_SDIN, PIN_SCLK, MSBFIRST, data);
149  digitalWrite(PIN_SCE, HIGH);
150}
151
152void  LcdCharacter(char character)
153{
154  LcdWrite(LCD_D, 0x00);
155  for (int index  = 0; index < 5; index++)
156  {
157    LcdWrite(LCD_D, ASCII[character - 0x20][index]);
158  }
159  LcdWrite(LCD_D, 0x00);
160}
161
162void LcdClear(void)
163{
164  for (int  index = 0; index < LCD_X * LCD_Y / 8; index++)
165  {
166    LcdWrite(LCD_D, 0x00);
167  }
168}
169
170void LcdInitialise(void)
171{
172  pinMode(PIN_SCE, OUTPUT);
173  pinMode(PIN_RESET, OUTPUT);
174  pinMode(PIN_DC, OUTPUT);
175  pinMode(PIN_SDIN,  OUTPUT);
176  pinMode(PIN_SCLK, OUTPUT);
177  digitalWrite(PIN_RESET, LOW);
178  digitalWrite(PIN_RESET, HIGH);
179  LcdWrite(LCD_C, 0x21 );
180  LcdWrite(LCD_C,  0xB1 );
181  LcdWrite(LCD_C, 0x04 );
182  LcdWrite(LCD_C, 0x14 );
183  LcdWrite(LCD_C,  0x20 );
184  LcdWrite(LCD_C, 0x0C );
185}
186
187void LcdString(char *characters)
188{
189  while (*characters)
190  {
191    LcdCharacter(*characters++);
192  }
193}
194
195void  setup() {
196  //enable output on the digital pins
197  pinMode( 11, INPUT);
198  pinMode( 12, INPUT);
199  pinMode( 14, INPUT);
200  pinMode( 15, INPUT);
201  pinMode(  16, INPUT);
202  pinMode( 17, INPUT);
203  pinMode( 18, INPUT);
204  pinMode( 19,  INPUT);
205  pinMode( 13 , OUTPUT);
206  pinMode( 8 , OUTPUT);
207  pinMode( 9 ,  OUTPUT);
208  pinMode( 10 , OUTPUT);
209  pinMode( 2 , OUTPUT);
210  digitalWrite(8,  HIGH);
211  digitalWrite(9, HIGH);
212  digitalWrite(10, HIGH);
213  digitalWrite(13,  LOW);
214  Serial.begin(9600);
215  Serial.println("=> Siap");
216  LcdInitialise();
217  LcdClear();
218  LcdString("                   Masukkan   Koin Rp500     atau     Koin Rp1000  @ Rp2000");
219  delay(500);
220}
221
222void loop() {
223  int  x = analogRead(14);
224  if (state == SIAP) {
225    if (x >= 33) {
226      state  = KOIN_MASUK1;
227      time1 = millis();
228      tone(2, 4200, 40);
229      Serial.println("snsr1,");
230      Serial.println("start wkt");
231    }
232  }
233   else if ((state == KOIN_MASUK1)  && (!(digitalRead(13)))) {
234    if ((digitalRead(12)) && (state == KOIN_MASUK1))  {
235      unsigned long diff1 = (millis() - time1);
236      Serial.println("snsr2,");
237      Serial.println("stop wkt");
238      Serial.print("jeda wkt: ");
239      Serial.print(diff1);
240      Serial.println(" ms");
241      if (diff1 > jeda_waktu) {
242        state  = SALDO_1000;
243        LcdInitialise();
244        LcdClear();
245        LcdString("       diterima              Saldo=Rp1000            Tambah  Koin Koin Rp1000");
246        digitalWrite (13, HIGH);     
247        Serial.println("koin=Rp 1000,  Saldo: Rp1000");
248        tone(2, 4200, 299);
249      }
250      else if (diff1  < jeda_waktu) {
251        state = SALDO_500;        
252        digitalWrite (13,  HIGH);
253        LcdInitialise();
254        LcdClear();
255        LcdString("       diterima              Saldo= Rp500            Tambah  Koin Koin Rp500");
256        Serial.println("koin=Rp 500, Saldo: Rp500");
257        tone(2, 4200,  299);
258      }
259    }
260  }
261  
262  if (state == SALDO_500) {
263    if  (x >= 33) {
264      state = KOIN_MASUK2;
265      time2 = millis();
266      tone(2,  4200, 40);
267      Serial.println("snsr1,");
268      Serial.println("start  wkt");
269    }
270  }
271  else if ((state == KOIN_MASUK2) && ((digitalRead(13))))  {
272    if ((digitalRead(12)) && (state == KOIN_MASUK2)) {
273      unsigned long  diff2 = (millis() - time2);
274      Serial.println("snsr2,");
275      Serial.println("stop  wkt");
276      Serial.print("jeda wkt: ");
277      Serial.print(diff2);
278      Serial.println(" ms");
279      if (diff2 > jeda_waktu) {
280        state  = SALDO_5001000;
281        LcdInitialise();
282        LcdClear();
283        LcdString("       diterima              Saldo=Rp1500            Tambah  Koin Koin Rp1000");
284        tone(2, 4200, 299);
285        Serial.println("koin=Rp 1000, Saldo: Rp1500");
286      }
287      else if (diff2 < jeda_waktu) {
288        state = SALDO_500500;
289        LcdInitialise();
290        LcdClear();
291        LcdString("       diterima              Saldo=Rp1000            Tambah  Koin Koin Rp500");
292        tone(2,  4200, 299);
293        Serial.println("koin=Rp 500, Saldo: Rp1000");            
294      }
295    }
296  }
297
298  if (state == SALDO_500500) {
299    if (x >= 33)  {
300      state = KOIN_MASUK3;
301      time3 = millis();
302      tone(2, 4200,  40);
303      Serial.println("snsr1,");
304      Serial.println("start wkt");
305    }
306  }
307  else if ((state == KOIN_MASUK3) && ((digitalRead(13)))) {
308    if ((digitalRead(12)) && (state == KOIN_MASUK3)) {
309      unsigned long diff3  = (millis() - time3);
310      Serial.println("snsr2,");
311      Serial.println("stop  wkt");
312      Serial.print("jeda wkt: ");
313      Serial.print(diff3);
314      Serial.println(" ms");
315      if (diff3 > jeda_waktu) {
316        state  = SALDO_5005001000;
317        LcdInitialise();
318        LcdClear();
319        LcdString("       diterima              Saldo=Rp2000            Pilih Produk Koin Rp1000");
320        Serial.println("koin=Rp 1000, Saldo: Rp2000");
321        tone(2, 4200,  799);
322      }
323      else if (diff3 < jeda_waktu) {
324        state = SALDO_500500500;
325        LcdInitialise();
326        LcdClear();
327        LcdString("       diterima              Saldo=Rp1500            Tambah  Koin Koin Rp500");
328        Serial.println("koin=Rp  500, Saldo: Rp1500");
329        tone(2, 4200, 299);
330      }
331    }
332  }
333
334  if (state == SALDO_500500500) {
335    if (x >= 33) {
336      state = KOIN_MASUK4;
337      time4 = millis();
338      tone(2, 4200, 40);
339      Serial.println("snsr1,");
340      Serial.println("start wkt");
341    }
342  }
343  else if ((state == KOIN_MASUK4)  && ((digitalRead(13)))) {
344    if ((digitalRead(12)) && (state == KOIN_MASUK4))  {
345      unsigned long diff4 = (millis() - time4);
346      Serial.println("snsr2,");
347      Serial.println("stop wkt");
348      Serial.print("jeda wkt: ");
349      Serial.print(diff4);
350      Serial.println(" ms");
351      if (diff4 > jeda_waktu) {
352        state  = SALDO_5005005001000;
353        LcdInitialise();
354        LcdClear();
355        LcdString("       diterima              Saldo=Rp2500            Pilih Produk Koin Rp1000");
356        Serial.println("koin=Rp 1000, Saldo: Rp2500");
357        tone(2, 4200,  799);       
358      }
359      else if (diff4 < jeda_waktu) {
360        state  = SALDO_500500500500;
361        LcdInitialise();
362        LcdClear();
363        LcdString("       diterima              Saldo=Rp2000            Pilih Produk Koin Rp500");
364        Serial.println("koin=Rp 500, Saldo: Rp2000");
365        tone(2, 4200,  799);
366      }
367    }
368  }
369
370if (state == SALDO_5001000) {
371    if  (x >= 33) {
372      state = KOIN_MASUK5;
373      time5 = millis();
374      tone(2,  4200, 40);
375      Serial.println("snsr1,");
376      Serial.println("start  wkt");
377    }
378  }
379  else if ((state == KOIN_MASUK5) && ((digitalRead(13))))  {
380    if ((digitalRead(12)) && (state == KOIN_MASUK5)) {
381      unsigned long  diff5 = (millis() - time5);
382      Serial.println("snsr2,");
383      Serial.println("stop  wkt");
384      Serial.print("jeda wkt: ");
385      Serial.print(diff5);
386      Serial.println(" ms");
387      if (diff5 > jeda_waktu) {
388        state  = SALDO_50010001000;
389        LcdInitialise();
390        LcdClear();
391        LcdString("       diterima              Saldo=Rp2500            Pilih Produk Koin Rp1000");
392        Serial.println("koin=Rp 1000, Saldo: Rp2500");
393        tone(2, 4200,  799);       
394      }
395      else if (diff5 < jeda_waktu) {
396        state  = SALDO_5001000500;
397        LcdInitialise();
398        LcdClear();
399        LcdString("       diterima              Saldo=Rp2000            Pilih Produk Koin Rp500");
400        Serial.println("koin=Rp 500, Saldo: Rp2000");
401        tone(2, 4200,  799);
402      }
403    }
404  }
405
406  if (state == SALDO_1000) {
407    if (x  >= 33) {
408      state = KOIN_MASUK6;
409      time6 = millis();
410      tone(2,  4200, 40);
411      Serial.println("snsr1,");
412      Serial.println("start  wkt");
413    }
414  }
415  else if ((state == KOIN_MASUK6) && ((digitalRead(13))))  {
416    if ((digitalRead(12)) && (state == KOIN_MASUK6)) {
417      unsigned long  diff6 = (millis() - time6);
418      Serial.println("snsr2,");
419      Serial.println("stop  wkt");
420      Serial.print("jeda wkt: ");
421      Serial.print(diff6);
422      Serial.println(" ms");
423      if (diff6 > jeda_waktu) {
424        state  = SALDO_10001000;
425        LcdInitialise();
426        LcdClear();
427        LcdString("       diterima              Saldo=Rp2000            Pilih Produk Koin Rp1000");
428        Serial.println("koin=Rp 1000, Saldo: Rp2000");
429        tone(2, 4200,  799);       
430      }
431      else if (diff6 < jeda_waktu) {
432        state  = SALDO_1000500;
433        LcdInitialise();
434        LcdClear();
435        LcdString("       diterima              Saldo=Rp1500            Tambah  Koin Koin Rp500");
436        Serial.println("koin=Rp 500, Saldo: Rp1500");
437        tone(2, 4200,  299);
438      }
439    }
440  }
441
442  if (state == SALDO_1000500) {
443    if  (x >= 33) {
444      state = KOIN_MASUK7;
445      time7 = millis();
446      tone(2,  4200, 40);
447      Serial.println("snsr1,");
448      Serial.println("start  wkt");
449    }
450  }
451  else if ((state == KOIN_MASUK7) && ((digitalRead(13))))  {
452    if ((digitalRead(12)) && (state == KOIN_MASUK7)) {
453      unsigned long  diff7 = (millis() - time7);
454      Serial.println("snsr2,");
455      Serial.println("stop  wkt");
456      Serial.print("jeda wkt: ");
457      Serial.print(diff7);
458      Serial.println(" ms");
459      if (diff7 > jeda_waktu) {
460        state  = SALDO_10005001000;
461        LcdInitialise();
462        LcdClear();
463        LcdString("       diterima              Saldo=Rp2500            Pilih Produk Koin Rp1000");
464        Serial.println("koin=Rp 1000, Saldo: Rp2500");
465        tone(2, 4200,  799);       
466      }
467      else if (diff7 < jeda_waktu) {
468        state  = SALDO_1000500500;
469        LcdInitialise();
470        LcdClear();
471        LcdString("       diterima              Saldo=Rp2000            Pilih Produk Koin Rp500");
472        Serial.println("koin=Rp 500, Saldo: Rp2000");
473        tone(2, 4200,  799);
474      }
475    }
476  }
477  
478  else if ((state == SALDO_500500500500)||(state  == SALDO_5005005001000)||(state == SALDO_5001000500)||(state == SALDO_50010001000)||(state  == SALDO_5005001000)||(state == SALDO_10001000)||(state == SALDO_1000500500)||(state  == SALDO_10005001000)) {
479    if (((( digitalRead(13) && ( ( digitalRead(9) )  && ( digitalRead(10) ) ) ) && digitalRead(17) )) && ((digitalRead(8)))) {
480      LcdInitialise();
481      LcdClear();
482      LcdString("        Mohon      Menunggu");
483      Serial.println("pb1");
484      tone(2, 4200, 200);
485      delay( 2500 );
486      digitalWrite( 8 , LOW  );
487      Serial.println("motor1");
488    }
489    else {
490      if ( (!(digitalRead(8))  && (!(digitalRead(11)) ))) {
491        digitalWrite( 8 , HIGH );
492        LcdInitialise();
493        LcdClear();
494        LcdString("     Terima Kasih");
495        tone(2,  4200, 100);
496        delay( 150 );
497        tone(2, 4200, 100);
498        Serial.println("produk1  jatuh");
499        delay( 4000 );
500        digitalWrite( 13 , LOW );
501        state  = KOIN_KELUAR;
502      }
503      else {
504      }
505    }
506    if (((( ( digitalRead(13)  && ( ( digitalRead(8) ) && ( digitalRead(10) ) ) ) && digitalRead(18) )) && ((digitalRead(9)))))  {
507      LcdInitialise();
508      LcdClear();
509      LcdString("        Mohon      Menunggu");
510      Serial.println("pb2");
511      tone(2, 4200, 200);
512      delay( 2500 );
513      digitalWrite( 9 , LOW );
514      Serial.println("motor2");
515    }
516    else {
517      if ( (!(digitalRead(9)) && (!(digitalRead(15)) )))  {
518        digitalWrite( 9 , HIGH );
519        LcdInitialise();
520        LcdClear();
521        LcdString("     Terima Kasih");
522        tone(2, 4200, 100);
523        delay(  150 );
524        tone(2, 4200, 100);
525        Serial.println("produk2 jatuh");
526        delay( 4000 );
527        digitalWrite( 13 , LOW );
528        state = KOIN_KELUAR;
529      }
530      else {
531      }
532    }
533    if (((( ( digitalRead(13) &&  ( ( digitalRead(8) ) && ( digitalRead(9) ) ) ) && digitalRead(19) )) && ((digitalRead(10)))))  {
534      LcdInitialise();
535      LcdClear();
536      LcdString("        Mohon      Menunggu");
537      Serial.println("pb3");
538      tone(2, 4200, 200);
539      delay( 2500 );
540      digitalWrite( 10 , LOW );
541      Serial.println("motor3");
542    }
543    else {
544      if ( (!(digitalRead(10)) && (!(digitalRead(16)) )))  {
545        digitalWrite( 10 , HIGH );
546        LcdInitialise();
547        LcdClear();
548        LcdString("     Terima Kasih");
549        tone(2, 4200, 100);
550        delay(  150 );
551        tone(2, 4200, 100);
552        Serial.println("produk3 jatuh");
553        delay( 4000 );
554        digitalWrite( 13 , LOW );
555        state = KOIN_KELUAR;
556      }
557      else {
558      }
559    }
560  }
561  else if ((state == KOIN_KELUAR))  {
562    if (((x <= 33) && !digitalRead(12)) && (!digitalRead(13))) {
563      state  = SIAP;
564      LcdInitialise();
565      LcdClear();
566      LcdString("                   Masukkan   Koin Rp500     atau     Koin Rp1000  @ Rp2000");
567      Serial.println("=>  Siap");
568    }
569  }
570}

const byte SIAP = 0;
const byte KOIN_MASUK1 = 1;
const byte KOIN_MASUK2  = 2;
const byte KOIN_MASUK3 = 3;
const byte KOIN_MASUK4 = 4;
const byte  KOIN_MASUK5 = 5;
const byte KOIN_MASUK6 = 6;
const byte KOIN_MASUK7 = 7;
const  byte SALDO_500 = 8;
const byte SALDO_500500 = 9;
const byte SALDO_500500500  = 10;
const byte SALDO_500500500500 = 11;
const byte SALDO_5005005001000 =  12;
const byte SALDO_5001000 = 13;
const byte SALDO_5001000500 = 14;
const  byte SALDO_50010001000 = 15;
const byte SALDO_5005001000 = 16;
const byte  SALDO_1000 = 17;
const byte SALDO_10001000 = 18;
const byte SALDO_1000500  = 19;
const byte SALDO_1000500500 = 20;
const byte SALDO_10005001000 = 21;
const  byte KOIN_KELUAR = 22;
byte state = SIAP;
const float jeda_waktu = 876;
unsigned  long time1;
unsigned long time2;
unsigned long time3;
unsigned long time4;
unsigned  long time5;
unsigned long time6;
unsigned long time7;

#define PIN_SCE   7
#define PIN_RESET 6
#define PIN_DC    5
#define PIN_SDIN  4
#define  PIN_SCLK  3
#define LCD_C     LOW
#define LCD_D     HIGH
#define LCD_X     84
#define LCD_Y     48

static const byte ASCII[][5] =
{
  {0x00,  0x00, 0x00, 0x00, 0x00} // 20
  , {0x00, 0x00, 0x5f, 0x00, 0x00} // 21 !
  , {0x00, 0x07, 0x00, 0x07, 0x00} // 22 "
  , {0x14, 0x7f, 0x14, 0x7f, 0x14}  // 23 #
  , {0x24, 0x2a, 0x7f, 0x2a, 0x12} // 24 $
  , {0x23, 0x13, 0x08,  0x64, 0x62} // 25 %
  , {0x36, 0x49, 0x55, 0x22, 0x50} // 26 &
  , {0x00,  0x05, 0x03, 0x00, 0x00} // 27 '
  , {0x00, 0x1c, 0x22, 0x41, 0x00} // 28 (
  , {0x00, 0x41, 0x22, 0x1c, 0x00} // 29 )
  , {0x14, 0x08, 0x3e, 0x08, 0x14}  // 2a *
  , {0x08, 0x08, 0x3e, 0x08, 0x08} // 2b +
  , {0x00, 0x50, 0x30,  0x00, 0x00} // 2c ,
  , {0x08, 0x08, 0x08, 0x08, 0x08} // 2d -
  , {0x00,  0x60, 0x60, 0x00, 0x00} // 2e .
  , {0x20, 0x10, 0x08, 0x04, 0x02} // 2f /
  , {0x3e, 0x51, 0x49, 0x45, 0x3e} // 30 0
  , {0x00, 0x42, 0x7f, 0x40, 0x00}  // 31 1
  , {0x42, 0x61, 0x51, 0x49, 0x46} // 32 2
  , {0x21, 0x41, 0x45,  0x4b, 0x31} // 33 3
  , {0x18, 0x14, 0x12, 0x7f, 0x10} // 34 4
  , {0x27,  0x45, 0x45, 0x45, 0x39} // 35 5
  , {0x3c, 0x4a, 0x49, 0x49, 0x30} // 36 6
  , {0x01, 0x71, 0x09, 0x05, 0x03} // 37 7
  , {0x36, 0x49, 0x49, 0x49, 0x36}  // 38 8
  , {0x06, 0x49, 0x49, 0x29, 0x1e} // 39 9
  , {0x00, 0x36, 0x36,  0x00, 0x00} // 3a :
  , {0x00, 0x56, 0x36, 0x00, 0x00} // 3b ;
  , {0x08,  0x14, 0x22, 0x41, 0x00} // 3c <
  , {0x14, 0x14, 0x14, 0x14, 0x14} // 3d =
  , {0x00, 0x41, 0x22, 0x14, 0x08} // 3e >
  , {0x02, 0x01, 0x51, 0x09, 0x06}  // 3f ?
  , {0x32, 0x49, 0x79, 0x41, 0x3e} // 40 @
  , {0x7e, 0x11, 0x11,  0x11, 0x7e} // 41 A
  , {0x7f, 0x49, 0x49, 0x49, 0x36} // 42 B
  , {0x3e,  0x41, 0x41, 0x41, 0x22} // 43 C
  , {0x7f, 0x41, 0x41, 0x22, 0x1c} // 44 D
  , {0x7f, 0x49, 0x49, 0x49, 0x41} // 45 E
  , {0x7f, 0x09, 0x09, 0x09, 0x01}  // 46 F
  , {0x3e, 0x41, 0x49, 0x49, 0x7a} // 47 G
  , {0x7f, 0x08, 0x08,  0x08, 0x7f} // 48 H
  , {0x00, 0x41, 0x7f, 0x41, 0x00} // 49 I
  , {0x20,  0x40, 0x41, 0x3f, 0x01} // 4a J
  , {0x7f, 0x08, 0x14, 0x22, 0x41} // 4b K
  , {0x7f, 0x40, 0x40, 0x40, 0x40} // 4c L
  , {0x7f, 0x02, 0x0c, 0x02, 0x7f}  // 4d M
  , {0x7f, 0x04, 0x08, 0x10, 0x7f} // 4e N
  , {0x3e, 0x41, 0x41,  0x41, 0x3e} // 4f O
  , {0x7f, 0x09, 0x09, 0x09, 0x06} // 50 P
  , {0x3e,  0x41, 0x51, 0x21, 0x5e} // 51 Q
  , {0x7f, 0x09, 0x19, 0x29, 0x46} // 52 R
  , {0x46, 0x49, 0x49, 0x49, 0x31} // 53 S
  , {0x01, 0x01, 0x7f, 0x01, 0x01}  // 54 T
  , {0x3f, 0x40, 0x40, 0x40, 0x3f} // 55 U
  , {0x1f, 0x20, 0x40,  0x20, 0x1f} // 56 V
  , {0x3f, 0x40, 0x38, 0x40, 0x3f} // 57 W
  , {0x63,  0x14, 0x08, 0x14, 0x63} // 58 X
  , {0x07, 0x08, 0x70, 0x08, 0x07} // 59 Y
  , {0x61, 0x51, 0x49, 0x45, 0x43} // 5a Z
  , {0x00, 0x7f, 0x41, 0x41, 0x00}  // 5b [
  , {0x02, 0x04, 0x08, 0x10, 0x20} // 5c Â¥
  , {0x00, 0x41, 0x41,  0x7f, 0x00} // 5d ]
  , {0x04, 0x02, 0x01, 0x02, 0x04} // 5e ^
  , {0x40,  0x40, 0x40, 0x40, 0x40} // 5f _
  , {0x00, 0x01, 0x02, 0x04, 0x00} // 60 `
  , {0x20, 0x54, 0x54, 0x54, 0x78} // 61 a
  , {0x7f, 0x48, 0x44, 0x44, 0x38}  // 62 b
  , {0x38, 0x44, 0x44, 0x44, 0x20} // 63 c
  , {0x38, 0x44, 0x44,  0x48, 0x7f} // 64 d
  , {0x38, 0x54, 0x54, 0x54, 0x18} // 65 e
  , {0x08,  0x7e, 0x09, 0x01, 0x02} // 66 f
  , {0x0c, 0x52, 0x52, 0x52, 0x3e} // 67 g
  , {0x7f, 0x08, 0x04, 0x04, 0x78} // 68 h
  , {0x00, 0x44, 0x7d, 0x40, 0x00}  // 69 i
  , {0x20, 0x40, 0x44, 0x3d, 0x00} // 6a j
  , {0x7f, 0x10, 0x28,  0x44, 0x00} // 6b k
  , {0x00, 0x41, 0x7f, 0x40, 0x00} // 6c l
  , {0x7c,  0x04, 0x18, 0x04, 0x78} // 6d m
  , {0x7c, 0x08, 0x04, 0x04, 0x78} // 6e n
  , {0x38, 0x44, 0x44, 0x44, 0x38} // 6f o
  , {0x7c, 0x14, 0x14, 0x14, 0x08}  // 70 p
  , {0x08, 0x14, 0x14, 0x18, 0x7c} // 71 q
  , {0x7c, 0x08, 0x04,  0x04, 0x08} // 72 r
  , {0x48, 0x54, 0x54, 0x54, 0x20} // 73 s
  , {0x04,  0x3f, 0x44, 0x40, 0x20} // 74 t
  , {0x3c, 0x40, 0x40, 0x20, 0x7c} // 75 u
  , {0x1c, 0x20, 0x40, 0x20, 0x1c} // 76 v
  , {0x3c, 0x40, 0x30, 0x40, 0x3c}  // 77 w
  , {0x44, 0x28, 0x10, 0x28, 0x44} // 78 x
  , {0x0c, 0x50, 0x50,  0x50, 0x3c} // 79 y
  , {0x44, 0x64, 0x54, 0x4c, 0x44} // 7a z
  , {0x00,  0x08, 0x36, 0x41, 0x00} // 7b {
  , {0x00, 0x00, 0x7f, 0x00, 0x00} // 7c |
  , {0x00, 0x41, 0x36, 0x08, 0x00} // 7d }
  , {0x10, 0x08, 0x08, 0x10, 0x08}  // 7e â†�
  , {0x78, 0x46, 0x41, 0x46, 0x78} // 7f â†’
};

void LcdWrite(byte  dc, byte data)
{
  digitalWrite(PIN_DC, dc);
  digitalWrite(PIN_SCE, LOW);
  shiftOut(PIN_SDIN, PIN_SCLK, MSBFIRST, data);
  digitalWrite(PIN_SCE, HIGH);
}

void  LcdCharacter(char character)
{
  LcdWrite(LCD_D, 0x00);
  for (int index  = 0; index < 5; index++)
  {
    LcdWrite(LCD_D, ASCII[character - 0x20][index]);
  }
  LcdWrite(LCD_D, 0x00);
}

void LcdClear(void)
{
  for (int  index = 0; index < LCD_X * LCD_Y / 8; index++)
  {
    LcdWrite(LCD_D, 0x00);
  }
}

void LcdInitialise(void)
{
  pinMode(PIN_SCE, OUTPUT);
  pinMode(PIN_RESET, OUTPUT);
  pinMode(PIN_DC, OUTPUT);
  pinMode(PIN_SDIN,  OUTPUT);
  pinMode(PIN_SCLK, OUTPUT);
  digitalWrite(PIN_RESET, LOW);
  digitalWrite(PIN_RESET, HIGH);
  LcdWrite(LCD_C, 0x21 );
  LcdWrite(LCD_C,  0xB1 );
  LcdWrite(LCD_C, 0x04 );
  LcdWrite(LCD_C, 0x14 );
  LcdWrite(LCD_C,  0x20 );
  LcdWrite(LCD_C, 0x0C );
}

void LcdString(char *characters)
{
  while (*characters)
  {
    LcdCharacter(*characters++);
  }
}

void  setup() {
  //enable output on the digital pins
  pinMode( 11, INPUT);
  pinMode( 12, INPUT);
  pinMode( 14, INPUT);
  pinMode( 15, INPUT);
  pinMode(  16, INPUT);
  pinMode( 17, INPUT);
  pinMode( 18, INPUT);
  pinMode( 19,  INPUT);
  pinMode( 13 , OUTPUT);
  pinMode( 8 , OUTPUT);
  pinMode( 9 ,  OUTPUT);
  pinMode( 10 , OUTPUT);
  pinMode( 2 , OUTPUT);
  digitalWrite(8,  HIGH);
  digitalWrite(9, HIGH);
  digitalWrite(10, HIGH);
  digitalWrite(13,  LOW);
  Serial.begin(9600);
  Serial.println("=> Siap");
  LcdInitialise();
  LcdClear();
  LcdString("                   Masukkan   Koin Rp500     atau     Koin Rp1000  @ Rp2000");
  delay(500);
}

void loop() {
  int  x = analogRead(14);
  if (state == SIAP) {
    if (x >= 33) {
      state  = KOIN_MASUK1;
      time1 = millis();
      tone(2, 4200, 40);
      Serial.println("snsr1,");
      Serial.println("start wkt");
    }
  }
   else if ((state == KOIN_MASUK1)  && (!(digitalRead(13)))) {
    if ((digitalRead(12)) && (state == KOIN_MASUK1))  {
      unsigned long diff1 = (millis() - time1);
      Serial.println("snsr2,");
      Serial.println("stop wkt");
      Serial.print("jeda wkt: ");
      Serial.print(diff1);
      Serial.println(" ms");
      if (diff1 > jeda_waktu) {
        state  = SALDO_1000;
        LcdInitialise();
        LcdClear();
        LcdString("       diterima              Saldo=Rp1000            Tambah  Koin Koin Rp1000");
        digitalWrite (13, HIGH);     
        Serial.println("koin=Rp 1000,  Saldo: Rp1000");
        tone(2, 4200, 299);
      }
      else if (diff1  < jeda_waktu) {
        state = SALDO_500;        
        digitalWrite (13,  HIGH);
        LcdInitialise();
        LcdClear();
        LcdString("       diterima              Saldo= Rp500            Tambah  Koin Koin Rp500");
        Serial.println("koin=Rp 500, Saldo: Rp500");
        tone(2, 4200,  299);
      }
    }
  }
  
  if (state == SALDO_500) {
    if  (x >= 33) {
      state = KOIN_MASUK2;
      time2 = millis();
      tone(2,  4200, 40);
      Serial.println("snsr1,");
      Serial.println("start  wkt");
    }
  }
  else if ((state == KOIN_MASUK2) && ((digitalRead(13))))  {
    if ((digitalRead(12)) && (state == KOIN_MASUK2)) {
      unsigned long  diff2 = (millis() - time2);
      Serial.println("snsr2,");
      Serial.println("stop  wkt");
      Serial.print("jeda wkt: ");
      Serial.print(diff2);
      Serial.println(" ms");
      if (diff2 > jeda_waktu) {
        state  = SALDO_5001000;
        LcdInitialise();
        LcdClear();
        LcdString("       diterima              Saldo=Rp1500            Tambah  Koin Koin Rp1000");
        tone(2, 4200, 299);
        Serial.println("koin=Rp 1000, Saldo: Rp1500");
      }
      else if (diff2 < jeda_waktu) {
        state = SALDO_500500;
        LcdInitialise();
        LcdClear();
        LcdString("       diterima              Saldo=Rp1000            Tambah  Koin Koin Rp500");
        tone(2,  4200, 299);
        Serial.println("koin=Rp 500, Saldo: Rp1000");            
      }
    }
  }

  if (state == SALDO_500500) {
    if (x >= 33)  {
      state = KOIN_MASUK3;
      time3 = millis();
      tone(2, 4200,  40);
      Serial.println("snsr1,");
      Serial.println("start wkt");
    }
  }
  else if ((state == KOIN_MASUK3) && ((digitalRead(13)))) {
    if ((digitalRead(12)) && (state == KOIN_MASUK3)) {
      unsigned long diff3  = (millis() - time3);
      Serial.println("snsr2,");
      Serial.println("stop  wkt");
      Serial.print("jeda wkt: ");
      Serial.print(diff3);
      Serial.println(" ms");
      if (diff3 > jeda_waktu) {
        state  = SALDO_5005001000;
        LcdInitialise();
        LcdClear();
        LcdString("       diterima              Saldo=Rp2000            Pilih Produk Koin Rp1000");
        Serial.println("koin=Rp 1000, Saldo: Rp2000");
        tone(2, 4200,  799);
      }
      else if (diff3 < jeda_waktu) {
        state = SALDO_500500500;
        LcdInitialise();
        LcdClear();
        LcdString("       diterima              Saldo=Rp1500            Tambah  Koin Koin Rp500");
        Serial.println("koin=Rp  500, Saldo: Rp1500");
        tone(2, 4200, 299);
      }
    }
  }

  if (state == SALDO_500500500) {
    if (x >= 33) {
      state = KOIN_MASUK4;
      time4 = millis();
      tone(2, 4200, 40);
      Serial.println("snsr1,");
      Serial.println("start wkt");
    }
  }
  else if ((state == KOIN_MASUK4)  && ((digitalRead(13)))) {
    if ((digitalRead(12)) && (state == KOIN_MASUK4))  {
      unsigned long diff4 = (millis() - time4);
      Serial.println("snsr2,");
      Serial.println("stop wkt");
      Serial.print("jeda wkt: ");
      Serial.print(diff4);
      Serial.println(" ms");
      if (diff4 > jeda_waktu) {
        state  = SALDO_5005005001000;
        LcdInitialise();
        LcdClear();
        LcdString("       diterima              Saldo=Rp2500            Pilih Produk Koin Rp1000");
        Serial.println("koin=Rp 1000, Saldo: Rp2500");
        tone(2, 4200,  799);       
      }
      else if (diff4 < jeda_waktu) {
        state  = SALDO_500500500500;
        LcdInitialise();
        LcdClear();
        LcdString("       diterima              Saldo=Rp2000            Pilih Produk Koin Rp500");
        Serial.println("koin=Rp 500, Saldo: Rp2000");
        tone(2, 4200,  799);
      }
    }
  }

if (state == SALDO_5001000) {
    if  (x >= 33) {
      state = KOIN_MASUK5;
      time5 = millis();
      tone(2,  4200, 40);
      Serial.println("snsr1,");
      Serial.println("start  wkt");
    }
  }
  else if ((state == KOIN_MASUK5) && ((digitalRead(13))))  {
    if ((digitalRead(12)) && (state == KOIN_MASUK5)) {
      unsigned long  diff5 = (millis() - time5);
      Serial.println("snsr2,");
      Serial.println("stop  wkt");
      Serial.print("jeda wkt: ");
      Serial.print(diff5);
      Serial.println(" ms");
      if (diff5 > jeda_waktu) {
        state  = SALDO_50010001000;
        LcdInitialise();
        LcdClear();
        LcdString("       diterima              Saldo=Rp2500            Pilih Produk Koin Rp1000");
        Serial.println("koin=Rp 1000, Saldo: Rp2500");
        tone(2, 4200,  799);       
      }
      else if (diff5 < jeda_waktu) {
        state  = SALDO_5001000500;
        LcdInitialise();
        LcdClear();
        LcdString("       diterima              Saldo=Rp2000            Pilih Produk Koin Rp500");
        Serial.println("koin=Rp 500, Saldo: Rp2000");
        tone(2, 4200,  799);
      }
    }
  }

  if (state == SALDO_1000) {
    if (x  >= 33) {
      state = KOIN_MASUK6;
      time6 = millis();
      tone(2,  4200, 40);
      Serial.println("snsr1,");
      Serial.println("start  wkt");
    }
  }
  else if ((state == KOIN_MASUK6) && ((digitalRead(13))))  {
    if ((digitalRead(12)) && (state == KOIN_MASUK6)) {
      unsigned long  diff6 = (millis() - time6);
      Serial.println("snsr2,");
      Serial.println("stop  wkt");
      Serial.print("jeda wkt: ");
      Serial.print(diff6);
      Serial.println(" ms");
      if (diff6 > jeda_waktu) {
        state  = SALDO_10001000;
        LcdInitialise();
        LcdClear();
        LcdString("       diterima              Saldo=Rp2000            Pilih Produk Koin Rp1000");
        Serial.println("koin=Rp 1000, Saldo: Rp2000");
        tone(2, 4200,  799);       
      }
      else if (diff6 < jeda_waktu) {
        state  = SALDO_1000500;
        LcdInitialise();
        LcdClear();
        LcdString("       diterima              Saldo=Rp1500            Tambah  Koin Koin Rp500");
        Serial.println("koin=Rp 500, Saldo: Rp1500");
        tone(2, 4200,  299);
      }
    }
  }

  if (state == SALDO_1000500) {
    if  (x >= 33) {
      state = KOIN_MASUK7;
      time7 = millis();
      tone(2,  4200, 40);
      Serial.println("snsr1,");
      Serial.println("start  wkt");
    }
  }
  else if ((state == KOIN_MASUK7) && ((digitalRead(13))))  {
    if ((digitalRead(12)) && (state == KOIN_MASUK7)) {
      unsigned long  diff7 = (millis() - time7);
      Serial.println("snsr2,");
      Serial.println("stop  wkt");
      Serial.print("jeda wkt: ");
      Serial.print(diff7);
      Serial.println(" ms");
      if (diff7 > jeda_waktu) {
        state  = SALDO_10005001000;
        LcdInitialise();
        LcdClear();
        LcdString("       diterima              Saldo=Rp2500            Pilih Produk Koin Rp1000");
        Serial.println("koin=Rp 1000, Saldo: Rp2500");
        tone(2, 4200,  799);       
      }
      else if (diff7 < jeda_waktu) {
        state  = SALDO_1000500500;
        LcdInitialise();
        LcdClear();
        LcdString("       diterima              Saldo=Rp2000            Pilih Produk Koin Rp500");
        Serial.println("koin=Rp 500, Saldo: Rp2000");
        tone(2, 4200,  799);
      }
    }
  }
  
  else if ((state == SALDO_500500500500)||(state  == SALDO_5005005001000)||(state == SALDO_5001000500)||(state == SALDO_50010001000)||(state  == SALDO_5005001000)||(state == SALDO_10001000)||(state == SALDO_1000500500)||(state  == SALDO_10005001000)) {
    if (((( digitalRead(13) && ( ( digitalRead(9) )  && ( digitalRead(10) ) ) ) && digitalRead(17) )) && ((digitalRead(8)))) {
      LcdInitialise();
      LcdClear();
      LcdString("        Mohon      Menunggu");
      Serial.println("pb1");
      tone(2, 4200, 200);
      delay( 2500 );
      digitalWrite( 8 , LOW  );
      Serial.println("motor1");
    }
    else {
      if ( (!(digitalRead(8))  && (!(digitalRead(11)) ))) {
        digitalWrite( 8 , HIGH );
        LcdInitialise();
        LcdClear();
        LcdString("     Terima Kasih");
        tone(2,  4200, 100);
        delay( 150 );
        tone(2, 4200, 100);
        Serial.println("produk1  jatuh");
        delay( 4000 );
        digitalWrite( 13 , LOW );
        state  = KOIN_KELUAR;
      }
      else {
      }
    }
    if (((( ( digitalRead(13)  && ( ( digitalRead(8) ) && ( digitalRead(10) ) ) ) && digitalRead(18) )) && ((digitalRead(9)))))  {
      LcdInitialise();
      LcdClear();
      LcdString("        Mohon      Menunggu");
      Serial.println("pb2");
      tone(2, 4200, 200);
      delay( 2500 );
      digitalWrite( 9 , LOW );
      Serial.println("motor2");
    }
    else {
      if ( (!(digitalRead(9)) && (!(digitalRead(15)) )))  {
        digitalWrite( 9 , HIGH );
        LcdInitialise();
        LcdClear();
        LcdString("     Terima Kasih");
        tone(2, 4200, 100);
        delay(  150 );
        tone(2, 4200, 100);
        Serial.println("produk2 jatuh");
        delay( 4000 );
        digitalWrite( 13 , LOW );
        state = KOIN_KELUAR;
      }
      else {
      }
    }
    if (((( ( digitalRead(13) &&  ( ( digitalRead(8) ) && ( digitalRead(9) ) ) ) && digitalRead(19) )) && ((digitalRead(10)))))  {
      LcdInitialise();
      LcdClear();
      LcdString("        Mohon      Menunggu");
      Serial.println("pb3");
      tone(2, 4200, 200);
      delay( 2500 );
      digitalWrite( 10 , LOW );
      Serial.println("motor3");
    }
    else {
      if ( (!(digitalRead(10)) && (!(digitalRead(16)) )))  {
        digitalWrite( 10 , HIGH );
        LcdInitialise();
        LcdClear();
        LcdString("     Terima Kasih");
        tone(2, 4200, 100);
        delay(  150 );
        tone(2, 4200, 100);
        Serial.println("produk3 jatuh");
        delay( 4000 );
        digitalWrite( 13 , LOW );
        state = KOIN_KELUAR;
      }
      else {
      }
    }
  }
  else if ((state == KOIN_KELUAR))  {
    if (((x <= 33) && !digitalRead(12)) && (!digitalRead(13))) {
      state  = SIAP;
      LcdInitialise();
      LcdClear();
      LcdString("                   Masukkan   Koin Rp500     atau     Koin Rp1000  @ Rp2000");
      Serial.println("=>  Siap");
    }
  }
}

Documentation

Printscreen of Solidworks model for this Snacks Vending Machine

This is printscreen of my solidworks 3d model for this project.

Printscreen of Solidworks model for this Snacks Vending Machine

This is printscreen of my solidworks 3d model for this project.

Printscreen of Solidworks model for this Snacks Vending Machine

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Sevenmojoe

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