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, 14)) {
27    case (1): MQ135(); break;
28    case (2): MQ2(); break;
29    case (3): MQ3(); break;
30    case (4): MQ4(); break;
31    case (5): MQ5(); break;
32    case (6): MQ6(); break;
33    case (7): MQ7(); break;
34    case (8): MQ8(); break;
35    case (9): MQ9(); break;
36    case (10): MQ131(); break;
37    case (11): MQ136(); break;
38    case (12): MQ137(); break;
39    case (13): MQ303A(); break;
40    case (14): MQ307A(); break;
41    case (15): 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  MQ.RSRoMQAir(3.6);
61  MQ.setRL(20); 
62  mode = "MQ-135";
63
64  xname = "CO";
65  MQ.dangerousPer(42.5); 
66  x = MQ.MQ135DataCO();
67  hello();
68
69  xname = "Alcohol";
70  MQ.dangerousPer(25.55); 
71  x = MQ.MQ135DataAlcohol();
72  hello();
73
74  xname = "CO2";
75  MQ.dangerousPer(27.77);
76  x = MQ.MQ135DataCO2();
77  hello();
78
79  xname = "Toluen";
80  MQ.dangerousPer(21.944);
81  x = MQ.MQ135DataToluen();
82  hello();
83
84  xname = "NH4";
85  MQ.dangerousPer(29.166);
86  x = MQ.MQ135DataNH4();
87  hello();
88
89  xname = "Aceton";
90  MQ.dangerousPer(20.55);
91  x = MQ.MQ135DataAceton();
92  hello();
93
94  Air = MQ.MQ135DataAir();
95}
96
97void MQ2() {
98  MQ.RSRoMQAir(9.8);
99  MQ.setRL(20);
100  mode = "MQ-2";
101
102  xname = "H2";
103  MQ.dangerousPer(10.2);
104  x = MQ.MQ2DataH2();
105  hello();
106
107  xname = "LPG";
108  MQ.dangerousPer(7.96);
109  x = MQ.MQ2DataLPG();
110  hello();
111
112  xname = "CO";
113  MQ.dangerousPer(31.63);
114  x = MQ.MQ2DataCO();
115  hello();
116
117  xname = "Alcohol";
118  MQ.dangerousPer(16.33);
119  x = MQ.MQ2DataAlcohol();
120  hello();
121
122  xname = "Propane";
123  MQ.dangerousPer(8.38);
124  x = MQ.MQ2DataPropane();
125  hello();
126
127  xname = "CH4";
128  MQ.dangerousPer(17.86);
129  x = MQ.MQ2DataCH4();
130  hello();
131
132  xname = "Smoke";
133  MQ.dangerousPer(18.98);
134  x = MQ.MQ2Datasmoke();
135  hello();
136
137  Air = MQ.MQ2DataAir();
138}
139
140void MQ3() {
141  MQ.RSRoMQAir(9.8);
142  MQ.setRL(20);
143  mode = "MQ-3";
144
145  xname = "H2";
146  MQ.dangerousPer(10.2);
147  x = MQ.MQ2DataH2();
148  hello();
149
150  xname = "LPG";
151  MQ.dangerousPer(7.96);
152  x = MQ.MQ2DataLPG();
153  hello();
154
155  xname = "CO";
156  MQ.dangerousPer(31.63);
157  x = MQ.MQ2DataCO();
158  hello();
159
160  xname = "Alcohol";
161  MQ.dangerousPer(16.33);
162  x = MQ.MQ2DataAlcohol();
163  hello();
164
165  xname = "Propane";
166  MQ.dangerousPer(8.38);
167  x = MQ.MQ2DataPropane();
168  hello();
169
170  xname = "CH4";
171  MQ.dangerousPer(17.86);
172  x = MQ.MQ2DataCH4();
173  hello();
174
175  xname = "Smoke";
176  MQ.dangerousPer(18.98);
177  x = MQ.MQ2Datasmoke();
178  hello();
179
180  Air = MQ.MQ2DataAir();
181}
182
183void MQ4() {
184  MQ.RSRoMQAir(4.4);
185  MQ.setRL(20);
186  mode = "MQ-4";
187
188  xname = "H2";
189  MQ.dangerousPer(64.43);
190  x = MQ.MQ4DataH2();
191  hello();
192
193  xname = "LPG";
194  MQ.dangerousPer(34.32);
195  x = MQ.MQ4DataLPG();
196  hello();
197
198  xname = "CH4";
199  MQ.dangerousPer(22.73);
200  x = MQ.MQ4DataCH4();
201  hello();
202
203  xname = "CO";
204  MQ.dangerousPer(86.14);
205  x = MQ.MQ4DataCO();
206  hello();
207
208  xname = "Alcohol";
209  MQ.dangerousPer(82.05);
210  x = MQ.MQ4DataAlcohol();
211  hello();
212
213  xname = "Smoke";
214  MQ.dangerousPer(80.23);
215  x = MQ.MQ4DataSmoke();
216  hello();
217
218  Air = MQ.MQ4DataAir();
219}
220
221void MQ5() {
222  MQ.RSRoMQAir(6.5);
223  MQ.setRL(20);
224  mode = "MQ-5";
225
226  xname = "H2";
227  MQ.dangerousPer(15.12);
228  x = MQ.MQ5DataH2();
229  hello();
230
231  xname = "LPG";
232  MQ.dangerousPer(5.54);
233  x = MQ.MQ5DataLPG();
234  hello();
235
236  xname = "CH4";
237  MQ.dangerousPer(7.92);
238  x = MQ.MQ5DataCH4();
239  hello();
240
241  xname = "CO";
242  MQ.dangerousPer(44.15);
243  x = MQ.MQ5DataCO();
244  hello();
245
246  xname = "Alcohol";
247  MQ.dangerousPer(39.38);
248  x = MQ.MQ5DataAlcohol();
249  hello();
250
251  Air = MQ.MQ5DataAir();
252}
253
254void MQ6() {
255  MQ.RSRoMQAir(10);
256  MQ.setRL(20);
257  mode = "MQ-6";
258
259  xname = "H2";
260  MQ.dangerousPer(33.7);
261  x = MQ.MQ6DataH2();
262  hello();
263
264  xname = "LPG";
265  MQ.dangerousPer(10);
266  x = MQ.MQ6DataLPG();
267  hello();
268
269  xname = "CH4";
270  MQ.dangerousPer(13.5);
271  x = MQ.MQ6DataCH4();
272  hello();
273
274  xname = "CO";
275  MQ.dangerousPer(78);
276  x = MQ.MQ6DataCO();
277  hello();
278
279  xname = "Alcohol";
280  MQ.dangerousPer(61.2);
281  x = MQ.MQ6DataAlcohol();
282  hello();
283
284  Air = MQ.MQ6DataAir();
285}
286
287void MQ7() {
288  MQ.RSRoMQAir(26);
289  MQ.setRL(10);
290  mode = "MQ-7";
291
292  xname = "H2";
293  MQ.dangerousPer(3.08);
294  x = MQ.MQ7DataH2();
295  hello();
296
297  xname = "LPG";
298  MQ.dangerousPer(30.77);
299  x = MQ.MQ7DataLPG();
300  hello();
301
302  xname = "CH4";
303  MQ.dangerousPer(49.18);
304  x = MQ.MQ7DataCH4();
305  hello();
306
307  xname = "CO";
308  MQ.dangerousPer(3.85);
309  x = MQ.MQ7DataCO();
310  hello();
311
312  xname = "Alcohol";
313  MQ.dangerousPer(57.69);
314  x = MQ.MQ7DataAlcohol();
315  hello();
316
317  Air = MQ.MQ7DataAir();
318}
319
320void MQ8() {
321  MQ.RSRoMQAir(70);
322  MQ.setRL(10);
323  mode = "MQ-8";
324
325  xname = "H2";
326  MQ.dangerousPer(1.43);
327  x = MQ.MQ8DataH2();
328  hello();
329
330  xname = "LPG";
331  MQ.dangerousPer(27.53);
332  x = MQ.MQ8DataLPG();
333  hello();
334
335  xname = "CH4";
336  MQ.dangerousPer(63.47);
337  x = MQ.MQ8DataCH4();
338  hello();
339
340  xname = "CO";
341  MQ.dangerousPer(80.57);
342  x = MQ.MQ8DataCO();
343  hello();
344
345  xname = "Alcohol";
346  MQ.dangerousPer(14.81);
347  x = MQ.MQ8DataAlcohol();
348  hello();
349
350  Air = MQ.MQ8DataAir();
351}
352
353void MQ9() {
354  MQ.RSRoMQAir(9.7);
355  MQ.setRL(20);
356  mode = "MQ-9";
357
358  xname = "LPG";
359  MQ.dangerousPer(10.31);
360  x = MQ.MQ9DataLPG();
361  hello();
362
363  xname = "CH4";
364  MQ.dangerousPer(18.04);
365  x = MQ.MQ9DataCH4();
366  hello();
367
368  xname = "CO";
369  MQ.dangerousPer(8);
370  x = MQ.MQ9DataCO();
371  hello();
372
373  Air = MQ.MQ9DataAir();
374}
375
376void MQ131() {
377  MQ.RSRoMQAir(12);
378  MQ.setRL(100);
379  mode = "MQ131";
380
381  xname = "NOx";
382  MQ.dangerousPer(23.75);
383  x = MQ.MQ131DataNOx();
384  hello();
385
386  xname = "CL2";
387  MQ.dangerousPer(8.33);
388  x = MQ.MQ131DataCL2();
389  hello();
390
391  xname = "O3";
392  MQ.dangerousPer(4.166);
393  x = MQ.MQ131DataO3();
394  hello();
395
396  Air = MQ.MQ131DataAir();
397}
398
399void MQ136() {
400  MQ.RSRoMQAir(3.54);
401  MQ.setRL(20);
402  mode = "MQ-136";
403
404  xname = "H2S";
405  MQ.dangerousPer(40.68);
406  x = MQ.MQ136DataH2S();
407  hello();
408
409  xname = "NH4";
410  MQ.dangerousPer(72);
411  x = MQ.MQ136DataNH4();
412  hello();
413
414  xname = "CO";
415  MQ.dangerousPer(81.64);
416  x = MQ.MQ136DataCO();
417  hello();
418
419  Air = MQ.MQ136DataAir();
420}
421
422void MQ137() {
423  MQ.RSRoMQAir(3.54);
424  MQ.setRL(47);
425  mode = "MQ-137";
426
427  xname = "CO";
428  MQ.dangerousPer(81.64);
429  x = MQ.MQ137DataCO();
430  hello();
431
432  xname = "Ethanol";
433  MQ.dangerousPer(72);
434  x = MQ.MQ137DataEthanol();
435  hello();
436
437  xname = "NH3";
438  MQ.dangerousPer(40.68);
439  x = MQ.MQ137DataNH3();
440  hello();
441
442  Air = MQ.MQ137DataAir();
443}
444
445void MQ303A() {
446  MQ.RSRoMQAir(1);
447  MQ.setRL(47);
448  mode = "MQ303A";
449
450  xname = "IsoButane";
451  MQ.dangerousPer(17);
452  x = MQ.MQ303ADataIso();
453  hello();
454
455  xname = "Hydrogen";
456  MQ.dangerousPer(13);
457  x = MQ.MQ303ADataHyd();
458  hello();
459
460  xname = "Ethanol";
461  MQ.dangerousPer(10);
462  x = MQ.MQ303ADataEthanol();
463  hello();
464
465  Air = MQ.MQ303ADataAir();
466}
467
468void MQ309A() {
469  mode = "MQ309A";
470  MQ.setRL(50);
471  MQ.RSRoMQAir(11);
472
473  xname = "H2";
474  MQ.dangerousPer(11.4545);
475  x = MQ.MQ309ADataH2();
476  hello();
477
478  xname = "CH4";
479  MQ.dangerousPer(9.0909);
480  x = MQ.MQ309ADataCH4();
481  hello();
482
483  xname = "CO";
484  MQ.dangerousPer(54.5454);
485  x = MQ.MQ309ADataCO();
486  hello();
487
488  xname = "Alcohol";
489  MQ.dangerousPer(49.0909);
490  x = MQ.MQ309ADataAlcohol();
491  hello();
492
493  Air = MQ.MQ309ADataAir();
494}
495
496void MQ307A(){
497  mode = "MQ307A";
498  MQ.setRL(50);
499  MQ.RSRoMQAir(100);
500
501  xname = "CO";
502  MQ.dangerousPer(0.96);
503  x = MQ.MQ307ADataCO();
504  hello();
505
506  xname = "H2";
507  MQ.dangerousPer(56.107);
508  x = MQ.MQ307ADataH2();
509  hello();
510}
511
512// MQ-X: [PIN --> A1] [GND --> GND] [VCC --> 5V]
513// Potentiometer: [PIN --> A0] [GND --> GND] [VCC --> 5V]