High speed water droplets photography

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4int sensorPin = A0;    // select the input pin for the fototransistor
5int  resistorPin = A1; // select the input for the potentiometer
6
7byte relay =  3;
8byte led1 = 4;
9byte led2 = 5;
10byte led3 = 6;
11byte led4 = 7;
12byte  led5 = 8;
13byte led6 = 9;
14byte led7 = 10;
15byte led8 = 11;
16byte led9 =  12;
17byte led10 = 13;
18char ledbar[10] {led1, led2, led3, led4, led5, led6,  led7, led8, led9, led10};
19int sensorValue = 0;  // variable to store the value  coming from the sensor
20int resistValue = 0;  // Variable from the potmeter
21unsigned  long currentMillis;
22long interval = 1000;
23long previousMillis = 0;
24//------------------------------------------------------------
25void  setup() {
26  for (int z = 0; z < 10; z = z + 1) {
27    pinMode(ledbar[z], OUTPUT);
28  }
29  pinMode(relay, OUTPUT);
30  pinMode(sensorPin, INPUT);
31  pinMode(resistorPin,  INPUT);
32  Serial.begin(9600);
33
34}
35//----------------------------------------------------------------
36void  ledson(byte x) {
37
38  for (int z = 0; z < x; z = z + 1) {
39    digitalWrite(ledbar[z],  HIGH);
40  }
41}
42//------------------------------------------------------------------
43void  ledbar1() {
44
45  resistValue = analogRead(resistorPin);
46  resistValue = map(resistValue,  0, 1023, 0, 400);
47
48  AlleLedsUit ();
49  if (resistValue > 0 & resistValue  <= 40)
50  {
51    ledson(1);
52  }
53  else if (resistValue > 40  & resistValue  <= 80)
54  {
55    ledson(2);
56  }
57  else if (resistValue > 80  & resistValue  <= 120)
58  {
59    ledson(3);
60  }
61  else if (resistValue > 120  & resistValue  <= 160)
62  {
63    ledson(4);
64  }
65  else if (resistValue > 160  & resistValue  <= 200)
66  {
67    ledson(5);
68  }
69  else if (resistValue > 200  & resistValue  <= 240)
70  {
71    ledson(6);
72  }
73  else if (resistValue > 240  & resistValue  <= 280)
74  {
75    ledson(7);
76  }
77  else if (resistValue > 280  & resistValue  <= 320)
78  {
79    ledson(8);
80  }
81  else if (resistValue > 320  & resistValue  <= 360)
82  {
83    ledson(9);
84  }
85  else if (resistValue > 360  )
86  {
87    ledson(10);
88  }
89  //Serial.println(resistValue);
90
91}
92//------------------------------------------------------------------
93void  loop() {
94  // read the value from the sensor:
95  sensorValue = analogRead(sensorPin);
96  sensorValue = map(sensorValue, 0, 1023, 0, 1000);
97  //Serial.println(sensorValue);
98  if (sensorValue < 500)
99  {
100    delay(resistValue);   // delay instellen  voor de waterdruppel
101    digitalWrite(relay, HIGH);
102    delay(750);    //  delay voor het relais
103    digitalWrite(relay, LOW);
104  }
105  //============  een keer per seconde potmeter uitlezen ===========================
106  currentMillis  = millis();
107  if (currentMillis - previousMillis > interval)
108  {
109    previousMillis  = currentMillis;
110
111    ledbar1();
112
113  }
114}
115//----------------------------------------------------
116void  AlleLedsUit () {// all leds off
117  for (int z = 0; z < 10; z = z + 1) {
118    digitalWrite(ledbar[z],  LOW);
119  }
120
121}
122