Control Coin Acceptor with Arduino

1//Mario's Ideas
2//Controlling coin acceptor with Arduino
3
4#include  <Arduino.h>
5#include <TM1637Display.h>
6#include <EEPROM.h>
7
8// Module  connection pins (Digital Pins)
9#define CLK 3
10#define DIO 4
11
12TM1637Display  display(CLK, DIO);
13
14// variable use to measuer the intervals inbetween impulses
15int  i=0;
16// Number of impulses detected
17int impulsCount=0;
18// Sum of all the  coins inseted
19float total_amount=0;
20
21void setup() {
22 // pinMode(2, INPUT_PULLUP);
23  Serial.begin(9600);
24  display.setBrightness(0x0f);
25 // Interrupt connected  to PIN D2 executing IncomingImpuls function when signal goes from HIGH to LOW
26  attachInterrupt(0,incomingImpuls, FALLING);
27 EEPROM.get(0, total_amount);
28  display.clear();
29
30}
31
32void incomingImpuls()
33{
34  impulsCount=impulsCount+1;
35  i=0;
36}
37
38void loop() {
39  i=i+1;
40
41  Serial.print("i=");
42  Serial.print(i);
43  Serial.print(" Impulses:");
44  Serial.print(impulsCount);
45  Serial.print(" Total:");
46  Serial.println(total_amount);
47 
48  if (i>=30  and impulsCount==1){
49    total_amount=total_amount+2;
50    impulsCount=0;
51    EEPROM.put(0, total_amount);
52  }
53   if (i>=30 and impulsCount==2){
54    total_amount=total_amount+1;
55    impulsCount=0;
56    EEPROM.put(0, total_amount);
57  }
58   if (i>=30 and impulsCount==3){
59    total_amount=total_amount+0.5;
60    impulsCount=0;
61    EEPROM.put(0, total_amount);
62  }
63   if (i>=30 and  impulsCount==4){
64    total_amount=total_amount+0.2;
65    impulsCount=0;
66    EEPROM.put(0, total_amount);
67  }
68   if (i>=30 and impulsCount==5){
69    total_amount=total_amount+0.1;
70    impulsCount=0;
71    EEPROM.put(0, total_amount);
72  }
73
74 if(total_amount<10) display.showNumberDecEx(total_amount*10, 0b10000000,  true, 2, 2); 
75  else
76  display.showNumberDecEx(total_amount*10, 0b00100000,  false, 4, 0);
77}