Weather station

1#include <stdio.h>
2#include <DS1302.h>
3#include "DHT.h"
4#include  <Wire.h> 
5#include <Adafruit_BMP085.h>
6#include <LiquidCrystal_I2C.h>
7
8#define  DHTPIN 2     // what pin we're connected to
9// DHT sensor type
10#define DHTTYPE  DHT11   // DHT 11
11//#define DHTTYPE DHT22   // DHT 22 (AM2302)
12DHT dht(DHTPIN,  DHTTYPE);
13LiquidCrystal_I2C lcd(0x27, 20, 4);
14Adafruit_BMP085 bmp;
15 
16
17const  int kCePin   = 5;  // Chip Enable
18const int kIoPin   = 6;  // Input/Output
19const  int kSclkPin = 7;  // Serial Clock
20
21int redPin = 11;
22int greenPin = 13;
23int  bluePin = 12;
24
25// Create a DS1302 object.
26DS1302 rtc(kCePin, kIoPin, kSclkPin);
27
28String  dayAsString(const Time::Day day) {
29  switch (day) {
30    case Time::kSunday:  return "Sunday";
31    case Time::kMonday: return "Monday";
32    case Time::kTuesday:  return "Tuesday";
33    case Time::kWednesday: return "Wednesday";
34    case  Time::kThursday: return "Thursday";
35    case Time::kFriday: return "Friday";
36    case Time::kSaturday: return "Saturday";
37  }
38  return "(unknown day)";
39}
40
41void  printTime() {
42  // Get the current time and date from the chip.
43  Time t =  rtc.time();
44
45  // Name the day of the week.
46  const String day = dayAsString(t.day);
47
48  // Format the time and date and insert into the temporary buffer.
49  char buf[50];
50  snprintf(buf, sizeof(buf), "%s %04d-%02d-%02d %02d:%02d:%02d",
51           day.c_str(),
52           t.yr, t.mon, t.date,
53           t.hr, t.min, t.sec);
54
55
56
57
58
59  // Print the formatted string to serial so we can see the time.
60  Serial.println(buf);
61  float h = dht.readHumidity();
62
63  lcd.setCursor(0, 0); 
64  lcd.print(h);  
65  lcd.setCursor(0, 1); 
66  lcd.print(t.hr);
67}
68
69
70
71void setup()  {
72  Serial.begin(9600);  
73  if (!bmp.begin()) {
74    Serial.println("Could  not find a valid BMP085 sensor, check wiring!");
75    while (1) {}
76  }
77
78  dht.begin();
79  lcd.begin();
80  lcd.clear(); 
81  show_logo();
82  delay(5000);  
83  
84  pinMode(9,OUTPUT);
85  pinMode(redPin, OUTPUT);
86  pinMode(greenPin,  OUTPUT);
87  pinMode(bluePin, OUTPUT);
88  
89  // Initialize a new chip by turning  off write protection and clearing the
90  // clock halt flag. These methods needn't  always be called. See the DS1302
91  // datasheet for details.
92  rtc.writeProtect(false);
93  rtc.halt(false);
94
95  // Make a new time object to set the date and time.
96  // Sunday, March 29, 2021 at 10:30:50.
97  //Time t(2021, 03, 29, 10, 30, 50,  Time::kSunday);
98
99  // Set the time and date on the chip.
100  //rtc.time(t);
101}
102
103//  Loop and print the time every second.
104void loop() {
105
106  // Get the current  time and date from the chip.
107  Time t = rtc.time();
108
109  // Name the day  of the week.
110  const String day = dayAsString(t.day);
111
112  // Format the  time and date and insert into the temporary buffer.
113  char buf[50];
114  snprintf(buf,  sizeof(buf), "%s %04d-%02d-%02d %02d:%02d:%02d",
115           day.c_str(),
116           t.yr, t.mon, t.date,
117           t.hr, t.min, t.sec);
118    
119  int  h = dht.readHumidity();
120  int temp = dht.readTemperature();
121  
122  if((t.hr  >= 06) and (t.hr < 23)){  //if the time is greater than or equal to 6 a.m. and less  than 23 p.m., the screen will work
123
124  lcd.display(); //turn on
125  lcd.backlight();  //turn on backlight
126  
127  lcd.setCursor(0, 0); 
128  lcd.print("Humidity:    "); 
129  lcd.print(h);
130  lcd.print("%");
131  
132  lcd.setCursor(0,  1);
133  lcd.print("Temperature: "); 
134  lcd.print(temp);
135  lcd.print("c");
136  
137  lcd.setCursor(0, 3); 
138  lcd.print("Time: ");
139  if(t.hr < 10) lcd.print("0");
140  lcd.print(t.hr);
141  lcd.print(":");
142  if(t.min < 10) lcd.print("0");
143  lcd.print(t.min);
144  lcd.print(":");
145  if(t.sec < 10) lcd.print("0");
146  lcd.print(t.sec);
147
148  float p = bmp.readPressure()/133.3;
149  lcd.setCursor(0,  2);           //Place the cursor on the 0th character of the 2nd line
150  lcd.print("Pressure:  ");                //Displaying the text
151  lcd.print(p,0);                //Displaying  the pressure value
152  lcd.print("mm");
153  
154
155}
156
157  else{
158  lcd.clear();
159  lcd.noDisplay();
160  lcd.noBacklight(); 
161  }
162
163  
164int led_r=0, led_g=0,  led_b=0;
165
166//change the color of the LED from the temperature
167  
168if ((temp  >= 0) and (temp < 5) and (t.hr >= 06) and (t.hr < 22)){   
169    led_r = 1;
170    led_g = 1;
171    led_b = 255;
172  }
173
174if ((temp >= 5) and (temp < 10)  and (t.hr >= 06) and (t.hr < 22)){   
175    led_r = 1;
176    led_g = 50;
177    led_b  = 255;
178  }
179  
180if ((temp >= 10) and (temp < 15) and (t.hr >= 06) and (t.hr  < 22)){   
181    led_r = 1;
182    led_g = 200;
183    led_b = 200;
184  }
185
186if  ((temp >= 15) and (temp < 20) and (t.hr >= 06) and (t.hr < 22)){   
187    led_r  = 1;
188    led_g = 250;
189    led_b = 200;
190  }
191  
192if ((temp >= 20) and  (temp < 25) and (t.hr >= 06) and (t.hr < 22)){   
193    led_r = 10;
194    led_g  = 200;
195    led_b = 1;
196  }
197
198if ((temp >= 25) and (temp < 30) and (t.hr  >= 06) and (t.hr < 22)){   
199    led_r = 150;
200    led_g = 150;
201    led_b  = 1;
202  }
203
204
205if ((temp >= 30) and (temp < 35) and (t.hr >= 06) and (t.hr  < 22)){   
206    led_r = 255;
207    led_g = 255;
208    led_b = 1;
209  }
210
211if  ((temp >= 35) and (temp < 40) and (t.hr >= 06) and (t.hr < 22)){   
212    led_r  = 255;
213    led_g = 1;
214    led_b = 1;
215  }
216
217  analogWrite(redPin, led_r);
218  analogWrite(greenPin, led_g);
219  analogWrite(bluePin, led_b);
220  delay(1000);
221}
222
223void  show_logo() {
224  lcd.setCursor(7, 1);
225  lcd.print("Meteo");
226  lcd.setCursor(6,  2);
227  lcd.print("Station");
228
229
230
231}