Adjustable Air Quality Monitoring & Analysis Platform with Plug-UnPlug System

1#include <MQSpaceData.h>
2#include <LiquidCrystal_I2C.h>
3
4#define ADC_BIT_RESU  (10)
5#define space         (A1)
6
7#define pot analogRead(A0)
8
9MQSpaceData MQ(ADC_BIT_RESU, space);
10
11int lcdColumns = 16;
12int lcdRows = 2;
13
14int x, Air;
15String xname, mode, strper;
16
17LiquidCrystal_I2C lcd(0x27, lcdColumns, lcdRows); 
18
19void setup() {
20  MQ.begin();
21  lcd.init();
22  lcd.backlight();
23}
24
25void loop() {
26  switch (map(pot, 0, (1 << ADC_BIT_RESU) - 1, 1, 15)) {
27    case (1): MQ.setRatio("Rs/Ro"); MQ.RSRoMQAir(3.6); MQ.setRL(20); mode = "MQ-135"; MQ135(); break;
28    case (2): MQ.setRatio("Rs/Ro"); MQ.RSRoMQAir(9.8); MQ.setRL(20); mode = "MQ-2"; MQ2(); break;
29    case (3): MQ.setRatio("Rs/Ro"); MQ.RSRoMQAir(60.53); MQ.setRL(200); mode = "MQ-3"; MQ3(); break;
30    case (4): MQ.setRatio("Rs/Ro"); MQ.RSRoMQAir(4.4); MQ.setRL(20); mode = "MQ-4"; MQ4(); break;
31    case (5): MQ.setRatio("Rs/Ro"); MQ.RSRoMQAir(6.5); MQ.setRL(20); mode = "MQ-5"; MQ5(); break;
32    case (6): MQ.setRatio("Rs/Ro"); MQ.RSRoMQAir(10); MQ.setRL(20); mode = "MQ-6"; MQ6(); break;
33    case (7): MQ.setRatio("Rs/Ro"); MQ.RSRoMQAir(26); MQ.setRL(10); mode = "MQ-7"; MQ7(); break;
34    case (8): MQ.setRatio("Rs/Ro"); MQ.RSRoMQAir(70); MQ.setRL(10); mode = "MQ-8"; MQ8(); break;
35    case (9): MQ.setRatio("Rs/Ro"); MQ.RSRoMQAir(9.7); MQ.setRL(20); mode = "MQ-9"; MQ9(); break;
36    case (10): MQ.setRatio("Ro/Rs"); MQ.RSRoMQAir(12); MQ.setRL(100); mode = "MQ131"; MQ131(); break;
37    case (11): MQ.setRatio("Rs/Ro"); MQ.RSRoMQAir(3.54); MQ.setRL(20); mode = "MQ-136"; MQ136(); break;
38    case (12): MQ.setRatio("Rs/Ro"); MQ.RSRoMQAir(3.54); MQ.setRL(47); mode = "MQ-137"; MQ137(); break;
39    case (13): MQ.setRatio("Rs/Rs"); MQ.setRL(47); mode = "MQ303A"; MQ303A(); break;
40    case (14): MQ.setRatio("Rs/Rs"); MQ.setRL(50); mode = "MQ307A"; MQ307A(); break;
41    case (15): MQ.setRatio("Rs/Rs"); MQ.setRL(50); mode = "MQ309A"; MQ309A(); break;
42  }
43}
44
45void hello() {
46  lcd.setCursor(0, 0);
47  lcd.print("Air:" + String(Air));
48  lcd.setCursor(16 - mode.length(), 0);
49  lcd.print(mode);
50  lcd.setCursor(0, 1);
51  lcd.print(xname + ":" + String(x));
52  strper = String(int(MQ.MQData100()));
53  lcd.setCursor(16 - strper.length() - 1, 1);
54  lcd.print("%" + strper);
55  delay(1500);
56  lcd.clear();
57}
58
59void MQ135(){
60  xname = "CO";
61  MQ.dangerousPer(42.5); 
62  x = MQ.MQ135DataCO();
63  hello();
64
65  xname = "Alcohol";
66  MQ.dangerousPer(25.55); 
67  x = MQ.MQ135DataAlcohol();
68  hello();
69
70  xname = "CO2";
71  MQ.dangerousPer(27.77);
72  x = MQ.MQ135DataCO2();
73  hello();
74
75  xname = "Toluen";
76  MQ.dangerousPer(21.944);
77  x = MQ.MQ135DataToluen();
78  hello();
79
80  xname = "NH4";
81  MQ.dangerousPer(29.166);
82  x = MQ.MQ135DataNH4();
83  hello();
84
85  xname = "Aceton";
86  MQ.dangerousPer(20.55);
87  x = MQ.MQ135DataAceton();
88  hello();
89
90  Air = MQ.MQ135DataAir();
91}
92
93void MQ2() {
94  xname = "H2";
95  MQ.dangerousPer(10.2);
96  x = MQ.MQ2DataH2();
97  hello();
98
99  xname = "LPG";
100  MQ.dangerousPer(7.96);
101  x = MQ.MQ2DataLPG();
102  hello();
103
104  xname = "CO";
105  MQ.dangerousPer(31.63);
106  x = MQ.MQ2DataCO();
107  hello();
108
109  xname = "Alcohol";
110  MQ.dangerousPer(16.33);
111  x = MQ.MQ2DataAlcohol();
112  hello();
113
114  xname = "Propane";
115  MQ.dangerousPer(8.38);
116  x = MQ.MQ2DataPropane();
117  hello();
118
119  xname = "CH4";
120  MQ.dangerousPer(17.86);
121  x = MQ.MQ2DataCH4();
122  hello();
123
124  xname = "Smoke";
125  MQ.dangerousPer(18.98);
126  x = MQ.MQ2Datasmoke();
127  hello();
128
129  Air = MQ.MQ2DataAir();
130}
131
132void MQ3() {
133  xname = "H2";
134  MQ.dangerousPer(10.2);
135  x = MQ.MQ2DataH2();
136  hello();
137
138  xname = "LPG";
139  MQ.dangerousPer(7.96);
140  x = MQ.MQ2DataLPG();
141  hello();
142
143  xname = "CO";
144  MQ.dangerousPer(31.63);
145  x = MQ.MQ2DataCO();
146  hello();
147
148  xname = "Alcohol";
149  MQ.dangerousPer(16.33);
150  x = MQ.MQ2DataAlcohol();
151  hello();
152
153  xname = "Propane";
154  MQ.dangerousPer(8.38);
155  x = MQ.MQ2DataPropane();
156  hello();
157
158  xname = "CH4";
159  MQ.dangerousPer(17.86);
160  x = MQ.MQ2DataCH4();
161  hello();
162
163  xname = "Smoke";
164  MQ.dangerousPer(18.98);
165  x = MQ.MQ2Datasmoke();
166  hello();
167
168  Air = MQ.MQ2DataAir();
169}
170
171void MQ4() {
172  xname = "H2";
173  MQ.dangerousPer(64.43);
174  x = MQ.MQ4DataH2();
175  hello();
176
177  xname = "LPG";
178  MQ.dangerousPer(34.32);
179  x = MQ.MQ4DataLPG();
180  hello();
181
182  xname = "CH4";
183  MQ.dangerousPer(22.73);
184  x = MQ.MQ4DataCH4();
185  hello();
186
187  xname = "CO";
188  MQ.dangerousPer(86.14);
189  x = MQ.MQ4DataCO();
190  hello();
191
192  xname = "Alcohol";
193  MQ.dangerousPer(82.05);
194  x = MQ.MQ4DataAlcohol();
195  hello();
196
197  xname = "Smoke";
198  MQ.dangerousPer(80.23);
199  x = MQ.MQ4DataSmoke();
200  hello();
201
202  Air = MQ.MQ4DataAir();
203}
204
205void MQ5() {
206  xname = "H2";
207  MQ.dangerousPer(15.12);
208  x = MQ.MQ5DataH2();
209  hello();
210
211  xname = "LPG";
212  MQ.dangerousPer(5.54);
213  x = MQ.MQ5DataLPG();
214  hello();
215
216  xname = "CH4";
217  MQ.dangerousPer(7.92);
218  x = MQ.MQ5DataCH4();
219  hello();
220
221  xname = "CO";
222  MQ.dangerousPer(44.15);
223  x = MQ.MQ5DataCO();
224  hello();
225
226  xname = "Alcohol";
227  MQ.dangerousPer(39.38);
228  x = MQ.MQ5DataAlcohol();
229  hello();
230
231  Air = MQ.MQ5DataAir();
232}
233
234void MQ6() {
235  xname = "H2";
236  MQ.dangerousPer(33.7);
237  x = MQ.MQ6DataH2();
238  hello();
239
240  xname = "LPG";
241  MQ.dangerousPer(10);
242  x = MQ.MQ6DataLPG();
243  hello();
244
245  xname = "CH4";
246  MQ.dangerousPer(13.5);
247  x = MQ.MQ6DataCH4();
248  hello();
249
250  xname = "CO";
251  MQ.dangerousPer(78);
252  x = MQ.MQ6DataCO();
253  hello();
254
255  xname = "Alcohol";
256  MQ.dangerousPer(61.2);
257  x = MQ.MQ6DataAlcohol();
258  hello();
259
260  Air = MQ.MQ6DataAir();
261}
262
263void MQ7() {
264  xname = "H2";
265  MQ.dangerousPer(3.08);
266  x = MQ.MQ7DataH2();
267  hello();
268
269  xname = "LPG";
270  MQ.dangerousPer(30.77);
271  x = MQ.MQ7DataLPG();
272  hello();
273
274  xname = "CH4";
275  MQ.dangerousPer(49.18);
276  x = MQ.MQ7DataCH4();
277  hello();
278
279  xname = "CO";
280  MQ.dangerousPer(3.85);
281  x = MQ.MQ7DataCO();
282  hello();
283
284  xname = "Alcohol";
285  MQ.dangerousPer(57.69);
286  x = MQ.MQ7DataAlcohol();
287  hello();
288
289  Air = MQ.MQ7DataAir();
290}
291
292void MQ8() {
293  xname = "H2";
294  MQ.dangerousPer(1.43);
295  x = MQ.MQ8DataH2();
296  hello();
297
298  xname = "LPG";
299  MQ.dangerousPer(27.53);
300  x = MQ.MQ8DataLPG();
301  hello();
302
303  xname = "CH4";
304  MQ.dangerousPer(63.47);
305  x = MQ.MQ8DataCH4();
306  hello();
307
308  xname = "CO";
309  MQ.dangerousPer(80.57);
310  x = MQ.MQ8DataCO();
311  hello();
312
313  xname = "Alcohol";
314  MQ.dangerousPer(14.81);
315  x = MQ.MQ8DataAlcohol();
316  hello();
317
318  Air = MQ.MQ8DataAir();
319}
320
321void MQ9() {
322  xname = "LPG";
323  MQ.dangerousPer(10.31);
324  x = MQ.MQ9DataLPG();
325  hello();
326
327  xname = "CH4";
328  MQ.dangerousPer(18.04);
329  x = MQ.MQ9DataCH4();
330  hello();
331
332  xname = "CO";
333  MQ.dangerousPer(8);
334  x = MQ.MQ9DataCO();
335  hello();
336
337  Air = MQ.MQ9DataAir();
338}
339
340void MQ131() {
341  float MaxAir = 100; 
342  
343  xname = "NOx";
344  MQ.dangerousPer(23.75);
345  x = MQ.readRoRsratio(MQ.MQ131DataNOx(), MaxAir);
346  hello();
347
348  xname = "CL2";
349  MQ.dangerousPer(8.33);
350  x = MQ.readRoRsratio(MQ.MQ131DataCL2(), MaxAir);
351  hello();
352
353  xname = "O3";
354  MQ.dangerousPer(4.166);
355  x = MQ.readRoRsratio(MQ.MQ131DataO3(), MaxAir);
356  hello();
357
358  Air = MQ.MQ131DataAir();
359}
360
361void MQ136() {
362  xname = "H2S";
363  MQ.dangerousPer(40.68);
364  x = MQ.MQ136DataH2S();
365  hello();
366
367  xname = "NH4";
368  MQ.dangerousPer(72);
369  x = MQ.MQ136DataNH4();
370  hello();
371
372  xname = "CO";
373  MQ.dangerousPer(81.64);
374  x = MQ.MQ136DataCO();
375  hello();
376
377  Air = MQ.MQ136DataAir();
378}
379
380void MQ137() {
381  xname = "CO";
382  MQ.dangerousPer(81.64);
383  x = MQ.MQ137DataCO();
384  hello();
385
386  xname = "Ethanol";
387  MQ.dangerousPer(72);
388  x = MQ.MQ137DataEthanol();
389  hello();
390
391  xname = "NH3";
392  MQ.dangerousPer(40.68);
393  x = MQ.MQ137DataNH3();
394  hello();
395
396  Air = MQ.MQ137DataAir();
397}
398
399void MQ303A() {
400  xname = "IsoButane";
401  MQ.dangerousPer(28);
402  x = MQ.MQ303ADataIso();
403  hello();
404
405  xname = "Hydrogen";
406  MQ.dangerousPer(21);
407  x = MQ.MQ303ADataHyd();
408  hello();
409
410  xname = "Ethanol";
411  MQ.dangerousPer(27);
412  x = MQ.MQ303ADataEthanol();
413  hello();
414
415  Air = MQ.MQ303ADataAir();
416}
417
418void MQ309A() {
419  xname = "H2";
420  MQ.dangerousPer(11.4545);
421  x = MQ.MQ309ADataH2();
422  hello();
423
424  xname = "CH4";
425  MQ.dangerousPer(9.0909);
426  x = MQ.MQ309ADataCH4();
427  hello();
428
429  xname = "CO";
430  MQ.dangerousPer(54.5454);
431  x = MQ.MQ309ADataCO();
432  hello();
433
434  xname = "Alcohol";
435  MQ.dangerousPer(49.0909);
436  x = MQ.MQ309ADataAlcohol();
437  hello();
438
439  Air = MQ.MQ309ADataAir();
440}
441
442void MQ307A(){
443  xname = "CO";
444  MQ.dangerousPer(0.96);
445  x = MQ.MQ307ADataCO();
446  hello();
447
448  xname = "H2";
449  MQ.dangerousPer(56.107);
450  x = MQ.MQ307ADataH2();
451  hello();
452}
453
454// MQ-X: [PIN --> A1] [GND --> GND] [VCC --> 5V]
455// Potentiometer: [PIN --> A0] [GND --> GND] [VCC --> 5V]