Arduino Based Air Quality Monitoring IOT Project

1
2//Program to 
3
4#include <SoftwareSerial.h>
5
6#include <LiquidCrystal.h>
7
8
9LiquidCrystal  lcd(13, 12, 6, 5, 4, 3);
10
11
12float t=0;
13
14
15char data = 0;
16
17
18// replace with  your channel's thingspeak API key
19
20String apiKey = "8NBNB4VQ9F2EEWQM";
21
22
23//  connect 10 to TX of Serial USB
24
25// connect 11 to RX of serial USB
26
27SoftwareSerial  ser(10,11); // RX, TX
28
29
30// this runs once
31
32void setup() 
33
34{                
35
36  // enable debug serial 
37
38  //Serial.begin(9600);
39
40  // enable software serial
41
42  ser.begin(9600);
43
44  lcd.begin(16, 2);
45
46
47  lcd.setCursor(0,0); 
48
49  lcd.print("Engineers  Garage");
50
51  lcd.setCursor(0,1);
52
53  lcd.print("               "); 
54
55  delay(3000);
56
57
58  lcd.clear();
59
60  lcd.setCursor(0,0);
61
62  lcd.print("    IOT AIR");
63
64  lcd.setCursor(0,1);
65
66  lcd.print("QUALITY MONITOR");  
67
68  delay(3000); 
69
70
71 // pinMode(12, INPUT);
72
73  
74
75  // reset ESP8266 WiFi connection AT+CIPMUX=1 AT+CWJAP
76
77  ser.println("AT");
78
79  delay(1000);
80
81  ser.println("AT+GMR");
82
83  delay(1000);
84
85  ser.println("AT+CWMODE=3");
86
87  delay(1000);
88
89  ser.println("AT+RST");
90
91  delay(5000);
92
93  ser.println("AT+CIPMUX=1");
94
95  delay(1000);
96
97  String cmd="AT+CWJAP=\\"EngineersGarage\\",\\"egP@$$w0rd?\\"";
98
99  ser.println(cmd);
100
101  delay(1000);
102
103  ser.println("AT+CIFSR");
104
105  delay(1000);
106
107
108  lcd.clear();
109
110  lcd.setCursor(0,0);
111
112  lcd.print("      WIFI");
113
114  lcd.setCursor(0,1);
115
116  lcd.print("   CONNECTED");
117
118 }
119
120
121
122// the loop 
123
124void loop()
125
126{
127
128  delay(1000);
129
130  t = analogRead(A0);
131
132  Serial.print("Airquality = ");
133
134  Serial.println(t);
135
136
137  lcd.clear();
138
139  lcd.setCursor(0,0);
140
141  lcd.print("  SENDING DATA");
142
143  lcd.setCursor(0,1);
144
145  lcd.print("    TO CLOUD");
146
147  esp_8266();
148
149
150}
151
152
153void esp_8266()
154
155{
156
157   // TCP connection AT+CIPSTART=4,"TCP","184.106.153.149",80  
158
159    String cmd = "AT+CIPSTART=4,\\"TCP\\",\\"";
160
161    cmd += "184.106.153.149";  // api.thingspeak.com
162
163    cmd += "\\",80";
164
165    ser.println(cmd);
166
167    Serial.println(cmd);  
168
169    if(ser.find("Error"))
170
171    {
172
173      Serial.println("AT+CIPSTART error");
174
175      return;
176
177    }
178
179  
180
181  // prepare GET string GET https://api.thingspeak.com/update?api_key=LHAG4NSIYJ5UWS6U&field1=0\
\
182\
\
183
184
185  String getStr = "GET /update?api_key=";
186
187  getStr += apiKey;
188
189  //getStr  +="&field1=";
190
191  //getStr +=String(h);
192
193  getStr +="&field1=";
194
195  getStr  +=String(t);
196
197  getStr += "\
\
198\
\
199";
200
201  // send data length
202
203  cmd  = "AT+CIPSEND=4,";
204
205  cmd += String(getStr.length());
206
207  ser.println(cmd);
208
209  Serial.println(cmd);
210
211  delay(1000);
212
213  ser.print(getStr);
214
215  Serial.println(getStr);
216
217     
218
219  // thingspeak needs 15 sec delay between updates
220
221  delay(16000);  
222
223}
224
225[/restrict]

1//Program to 
2
3#include <SoftwareSerial.h>
4
5#include <LiquidCrystal.h>
6
7
8LiquidCrystal  lcd(13, 12, 6, 5, 4, 3);
9
10
11float t=0;
12
13
14char data = 0;
15
16
17//  replace with your channel's thingspeak API key
18
19String apiKey = "8NBNB4VQ9F2EEWQM";
20
21
22//  connect 10 to TX of Serial USB
23
24// connect 11 to RX of serial USB
25
26SoftwareSerial  ser(10,11); // RX, TX
27
28
29// this runs once
30
31void setup() 
32
33{                
34
35  // enable debug serial 
36
37  //Serial.begin(9600);
38
39  // enable software serial
40
41  ser.begin(9600);
42
43  lcd.begin(16, 2);
44
45
46  lcd.setCursor(0,0); 
47
48  lcd.print("Engineers Garage");
49
50  lcd.setCursor(0,1);
51
52  lcd.print("               "); 
53
54  delay(3000);
55
56
57  lcd.clear();
58
59  lcd.setCursor(0,0);
60
61  lcd.print("    IOT AIR");
62
63  lcd.setCursor(0,1);
64
65  lcd.print("QUALITY MONITOR");  
66
67  delay(3000); 
68
69
70 // pinMode(12,  INPUT);
71
72  
73
74  // reset ESP8266 WiFi connection AT+CIPMUX=1 AT+CWJAP
75
76  ser.println("AT");
77
78  delay(1000);
79
80  ser.println("AT+GMR");
81
82  delay(1000);
83
84  ser.println("AT+CWMODE=3");
85
86  delay(1000);
87
88  ser.println("AT+RST");
89
90  delay(5000);
91
92  ser.println("AT+CIPMUX=1");
93
94  delay(1000);
95
96  String cmd="AT+CWJAP=\\"EngineersGarage\\",\\"egP@$$w0rd?\\"";
97
98  ser.println(cmd);
99
100  delay(1000);
101
102  ser.println("AT+CIFSR");
103
104  delay(1000);
105
106
107  lcd.clear();
108
109  lcd.setCursor(0,0);
110
111  lcd.print("      WIFI");
112
113  lcd.setCursor(0,1);
114
115  lcd.print("   CONNECTED");
116
117  }
118
119
120
121// the loop 
122
123void loop()
124
125{
126
127  delay(1000);
128
129  t = analogRead(A0);
130
131  Serial.print("Airquality = ");
132
133  Serial.println(t);
134
135
136  lcd.clear();
137
138  lcd.setCursor(0,0);
139
140  lcd.print("  SENDING DATA");
141
142  lcd.setCursor(0,1);
143
144  lcd.print("    TO CLOUD");
145
146  esp_8266();
147
148
149}
150
151
152void  esp_8266()
153
154{
155
156   // TCP connection AT+CIPSTART=4,"TCP","184.106.153.149",80  
157
158    String cmd = "AT+CIPSTART=4,\\"TCP\\",\\"";
159
160    cmd += "184.106.153.149";  // api.thingspeak.com
161
162    cmd += "\\",80";
163
164    ser.println(cmd);
165
166    Serial.println(cmd); 
167
168    if(ser.find("Error"))
169
170    {
171
172      Serial.println("AT+CIPSTART error");
173
174      return;
175
176    }
177
178  
179
180  // prepare GET string GET https://api.thingspeak.com/update?api_key=LHAG4NSIYJ5UWS6U&field1=0\
\
181\
\
182
183
184  String getStr = "GET /update?api_key=";
185
186  getStr += apiKey;
187
188  //getStr  +="&field1=";
189
190  //getStr +=String(h);
191
192  getStr +="&field1=";
193
194  getStr +=String(t);
195
196  getStr += "\
\
197\
\
198";
199
200  // send data  length
201
202  cmd = "AT+CIPSEND=4,";
203
204  cmd += String(getStr.length());
205
206  ser.println(cmd);
207
208  Serial.println(cmd);
209
210  delay(1000);
211
212  ser.print(getStr);
213
214  Serial.println(getStr);
215
216     
217
218  // thingspeak  needs 15 sec delay between updates
219
220  delay(16000);  
221
222}

1//Program to 
2
3#include <SoftwareSerial.h>
4
5#include <LiquidCrystal.h>
6
7
8LiquidCrystal   lcd(13, 12, 6, 5, 4, 3);
9
10
11float t=0;
12
13
14char data = 0;
15
16
17//   replace with your channel's thingspeak API key
18
19String apiKey = "8NBNB4VQ9F2EEWQM";
20
21
22//   connect 10 to TX of Serial USB
23
24// connect 11 to RX of serial USB
25
26SoftwareSerial   ser(10,11); // RX, TX
27
28
29// this runs once
30
31void setup() 
32
33{                 
34
35  // enable debug serial 
36
37  //Serial.begin(9600);
38
39   // enable software serial
40
41  ser.begin(9600);
42
43  lcd.begin(16, 2);
44
45
46   lcd.setCursor(0,0); 
47
48  lcd.print("Engineers Garage");
49
50  lcd.setCursor(0,1);
51
52   lcd.print("               "); 
53
54  delay(3000);
55
56
57  lcd.clear();
58
59   lcd.setCursor(0,0);
60
61  lcd.print("    IOT AIR");
62
63  lcd.setCursor(0,1);
64
65   lcd.print("QUALITY MONITOR");  
66
67  delay(3000); 
68
69
70 // pinMode(12,   INPUT);
71
72  
73
74  // reset ESP8266 WiFi connection AT+CIPMUX=1 AT+CWJAP
75
76   ser.println("AT");
77
78  delay(1000);
79
80  ser.println("AT+GMR");
81
82   delay(1000);
83
84  ser.println("AT+CWMODE=3");
85
86  delay(1000);
87
88   ser.println("AT+RST");
89
90  delay(5000);
91
92  ser.println("AT+CIPMUX=1");
93
94   delay(1000);
95
96  String cmd="AT+CWJAP=\\"EngineersGarage\\",\\"egP@$$w0rd?\\"";
97
98   ser.println(cmd);
99
100  delay(1000);
101
102  ser.println("AT+CIFSR");
103
104   delay(1000);
105
106
107  lcd.clear();
108
109  lcd.setCursor(0,0);
110
111  lcd.print("       WIFI");
112
113  lcd.setCursor(0,1);
114
115  lcd.print("   CONNECTED");
116
117   }
118
119
120
121// the loop 
122
123void loop()
124
125{
126
127  delay(1000);
128
129   t = analogRead(A0);
130
131  Serial.print("Airquality = ");
132
133  Serial.println(t);
134
135
136   lcd.clear();
137
138  lcd.setCursor(0,0);
139
140  lcd.print("  SENDING DATA");
141
142   lcd.setCursor(0,1);
143
144  lcd.print("    TO CLOUD");
145
146  esp_8266();
147
148
149}
150
151
152void   esp_8266()
153
154{
155
156   // TCP connection AT+CIPSTART=4,"TCP","184.106.153.149",80   
157
158    String cmd = "AT+CIPSTART=4,\\"TCP\\",\\"";
159
160    cmd += "184.106.153.149";   // api.thingspeak.com
161
162    cmd += "\\",80";
163
164    ser.println(cmd);
165
166     Serial.println(cmd); 
167
168    if(ser.find("Error"))
169
170    {
171
172       Serial.println("AT+CIPSTART error");
173
174      return;
175
176    }
177
178   
179
180  // prepare GET string GET https://api.thingspeak.com/update?api_key=LHAG4NSIYJ5UWS6U&field1=0\
\
181\
\
182
183
184   String getStr = "GET /update?api_key=";
185
186  getStr += apiKey;
187
188  //getStr   +="&field1=";
189
190  //getStr +=String(h);
191
192  getStr +="&field1=";
193
194   getStr +=String(t);
195
196  getStr += "\
\
197\
\
198";
199
200  // send data   length
201
202  cmd = "AT+CIPSEND=4,";
203
204  cmd += String(getStr.length());
205
206   ser.println(cmd);
207
208  Serial.println(cmd);
209
210  delay(1000);
211
212   ser.print(getStr);
213
214  Serial.println(getStr);
215
216     
217
218  // thingspeak   needs 15 sec delay between updates
219
220  delay(16000);  
221
222}