Automated LED Lighting for Planted Aquarium

1/*Automated LED Lighting for Planted Aquarium. 
2 * 
3 *Author: Neeraj  R. Rane  
4 *Please note that the time is in 24-hour format.
5 *So, enter the  time accordingly for proper functioning.
6*/
7
8
9#define OLED_RESET 4
10#include  <Adafruit_SSD1306.h>
11#include <DS3231.h>
12
13DS3231  rtc(SDA, SCL);
14
15//Please  note that the time is in 24-hours format. Set the time accordingly.
16int ledStart  = 21;       //Set the LED start hour
17int ledStop = 23;        //Set the LED stop  hour
18int fanStart = 21;        //Set the Fan start hour
19int fanStop = 23;         //Set the fan stop hour
20
21int minutes,hours;
22int potPin = A0;
23int  manualSwitch = 6;
24int fanPin = 2;
25int relay1 = 3;
26int relay2 = 4;
27int  relay3 = 5;
28int wLed = 9;
29int rbLed = 10;
30
31Adafruit_SSD1306 display(OLED_RESET);
32
33void  setup()
34{
35  pinMode(manualSwitch, INPUT);
36  
37  pinMode(wLed, OUTPUT);
38  pinMode(rbLed, OUTPUT);
39  pinMode(fanPin, OUTPUT);
40
41  digitalWrite(relay1,  LOW);
42  digitalWrite(relay2, LOW);
43  digitalWrite(relay3, LOW);
44  
45  rtc.begin();
46  
47  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
48  display.display();
49  delay(1000);
50  display.clearDisplay();
51
52  display.setTextColor(WHITE);
53}
54
55void  loop(){
56  String time_3231 = rtc.getTimeStr();
57  hours = time_3231.substring(0,2).toInt();
58  minutes = time_3231.substring(3,5).toInt();
59  display.setTextSize(2);
60  display.setCursor(32,1);
61  display.print(hours);
62  display.print(":");
63  display.println(minutes);
64
65  if(hours >= fanStart && hours < fanStop){
66    digitalWrite(fanPin, HIGH);
67  }
68  else{
69    digitalWrite(fanPin, LOW);
70  }
71  
72  if(hours == ledStart){
73    if(minutes >=0 && minutes <=59){
74      wLedStart();
75    }
76    digitalWrite(rbLed,  HIGH);
77  }
78  
79  if(hours>ledStart && hours<ledStop-1){
80    digitalWrite(wLed,  HIGH);
81    digitalWrite(rbLed, HIGH);
82  }
83  
84  if(hours<ledStart ||  hours>ledStop){
85    digitalWrite(wLed, LOW);
86    digitalWrite(rbLed, LOW);
87  }
88  
89  if(hours == ledStop - 1){
90    if(minutes>=0 && minutes<=59){
91      wLedStop();
92    }
93  }
94
95  if(hours == ledStop){
96    digitalWrite(rbLed,  LOW);
97  }
98  
99  if(digitalRead(manualSwitch)==HIGH){
100    manualMode();
101  }
102  
103  display.display();
104  display.clearDisplay();
105}//main loop ends  here
106
107void wLedStart(){
108  int fade = map(minutes,0,59,1,255);
109  analogWrite(wLed,  fade);
110}
111
112void wLedStop(){
113  int fade = map(minutes,0,59,255,0);
114  analogWrite(wLed, fade);
115}
116
117void manualMode(){
118  digitalWrite(rbLed,  HIGH);
119  while(digitalRead(manualSwitch)==HIGH){
120    display.setTextSize(1);
121    display.setCursor(0,20);
122    display.println("Manual Mode");
123    display.display();
124    int brightness = analogRead(potPin);
125    brightness = map(brightness,0,1023,0,255);
126    analogWrite(wLed, brightness);
127  }
128  digitalWrite(wLed, LOW);
129  digitalWrite(rbLed,  LOW);
130}