ESP8266 Blynk Garage door & climate sensor, wifi, phone app

1/**************************************************************
2 *  *
3 *   Magnetic switch & DHT 22 output to blynk by David K
4 *   
5 *   Reed  switch is connected to pin 12 via input pullup
6 *   DHT sensor is connected to  pin 13
7 *   
8 *   Blynk App project setup:
9 *   LED widged attched to V4
10  *   Value Display widget attached to V5
11 *   Value Display widget attached to  V6
12 *   
13 *   
14 *
15 **************************************************************/
16
17#define  BLYNK_PRINT Serial    // Comment this out to disable prints and save space
18#include  <SPI.h>
19#include <ESP8266WiFi.h>
20#include <BlynkSimpleEsp8266.h>
21#include  <DHT.h>
22
23// You should get Auth Token in the Blynk App.
24// Go to the Project  Settings (nut icon).
25char auth[] = "***************************";
26
27//  Your WiFi credentials.
28// Set password to "" for open networks.
29char ssid[]  = "**********";
30char pass[] = "*********";
31
32int StatMagSwitch = 0;  // switch status setting to 0 or LOW initially, door closed
33int PreviousStatus  = 0; // this variable holds previous door status, 0: closed, 1: open
34
35#define  MAGPIN 12          // pin for magnetic switch
36#define DHTPIN 13          // pin  DHT sensor
37#define DHTTYPE DHT22      // DHT 22, AM2302, AM2321
38
39BlynkTimer  timer;          // Initializing blynk
40DHT dht(DHTPIN, DHTTYPE);  // Initializing  DHT sensor
41
42WidgetLED ledDoor(V4);     //Setting led widget as virtual pin  4 first
43// This function sends Arduino's up time every second to Virtual Pins  (4,5,6).
44// In the app, Widget's reading frequency should be set to PUSH. This  means
45// that you define how often to send data to Blynk App
46
47void sendReadings()
48{  int DoorChanged = 0; // this variable will check whether door has changed, 1 if  changed 
49 
50  StatMagSwitch = digitalRead(MAGPIN);  // Reading Magnetic switch  status 
51
52  if (StatMagSwitch != PreviousStatus)
53  {
54   DoorChanged =  1; 
55  }
56  
57  if (StatMagSwitch==1 && DoorChanged==1)
58  {
59    ledDoor.off();  //turning off if magnet is far away, i.e. Switch is HIGH
60    Blynk.notify("Garage  door just closed");
61  }
62  
63  if (StatMagSwitch==0 && DoorChanged==1)
64  {
65    ledDoor.on(); //turning on if magnet is close, i.e. Switch is LOW
66    Blynk.notify("Garage door just opened");
67  }
68  PreviousStatus = StatMagSwitch;
69
70  //Reading DHT sensor readings
71  float h = dht.readHumidity(); //Reading Humidity
72  float t = dht.readTemperature(); // or dht.readTemperature(true) for Fahrenheit
73
74  if (isnan(h) || isnan(t)) {
75    Serial.println("Failed to read from DHT sensor!");
76    return;
77  }
78
79  Blynk.virtualWrite(V5, h);  //V5 is for Humidity
80  Blynk.virtualWrite(V6, t);  //V6 is for Temperature
81}
82
83void setup()
84{
85  Serial.begin(9600); // See the connection status in Serial Monitor
86  pinMode(MAGPIN,  INPUT_PULLUP); // Defining magnetic switch pin as input_pullup
87  dht.begin();
88  Blynk.begin(auth, ssid, pass);
89
90  // Setup a function to be called every  second
91  timer.setInterval(1000L, sendReadings);
92}
93
94void loop()
95{
96  Blynk.run(); // Initiates Blynk
97  timer.run(); // Initiates SimpleTimer
98}

1/**************************************************************
2 *
3  *
4 *   Magnetic switch & DHT 22 output to blynk by David K
5 *   
6 *   Reed
7  switch is connected to pin 12 via input pullup
8 *   DHT sensor is connected to
9  pin 13
10 *   
11 *   Blynk App project setup:
12 *   LED widged attched to V4
13
14  *   Value Display widget attached to V5
15 *   Value Display widget attached to
16  V6
17 *   
18 *   
19 *
20 **************************************************************/
21
22#define
23  BLYNK_PRINT Serial    // Comment this out to disable prints and save space
24#include
25  <SPI.h>
26#include <ESP8266WiFi.h>
27#include <BlynkSimpleEsp8266.h>
28#include
29  <DHT.h>
30
31// You should get Auth Token in the Blynk App.
32// Go to the Project
33  Settings (nut icon).
34char auth[] = "***************************";
35
36//
37  Your WiFi credentials.
38// Set password to "" for open networks.
39char ssid[]
40  = "**********";
41char pass[] = "*********";
42
43int StatMagSwitch = 0;
44  // switch status setting to 0 or LOW initially, door closed
45int PreviousStatus
46  = 0; // this variable holds previous door status, 0: closed, 1: open
47
48#define
49  MAGPIN 12          // pin for magnetic switch
50#define DHTPIN 13          // pin
51  DHT sensor
52#define DHTTYPE DHT22      // DHT 22, AM2302, AM2321
53
54BlynkTimer
55  timer;          // Initializing blynk
56DHT dht(DHTPIN, DHTTYPE);  // Initializing
57  DHT sensor
58
59WidgetLED ledDoor(V4);     //Setting led widget as virtual pin
60  4 first
61// This function sends Arduino's up time every second to Virtual Pins
62  (4,5,6).
63// In the app, Widget's reading frequency should be set to PUSH. This
64  means
65// that you define how often to send data to Blynk App
66
67void sendReadings()
68{
69  int DoorChanged = 0; // this variable will check whether door has changed, 1 if
70  changed 
71 
72  StatMagSwitch = digitalRead(MAGPIN);  // Reading Magnetic switch
73  status 
74
75  if (StatMagSwitch != PreviousStatus)
76  {
77   DoorChanged =
78  1; 
79  }
80  
81  if (StatMagSwitch==1 && DoorChanged==1)
82  {
83    ledDoor.off();
84  //turning off if magnet is far away, i.e. Switch is HIGH
85    Blynk.notify("Garage
86  door just closed");
87  }
88  
89  if (StatMagSwitch==0 && DoorChanged==1)
90
91  {
92    ledDoor.on(); //turning on if magnet is close, i.e. Switch is LOW
93
94    Blynk.notify("Garage door just opened");
95  }
96  PreviousStatus = StatMagSwitch;
97
98
99  //Reading DHT sensor readings
100  float h = dht.readHumidity(); //Reading Humidity
101
102  float t = dht.readTemperature(); // or dht.readTemperature(true) for Fahrenheit
103
104
105  if (isnan(h) || isnan(t)) {
106    Serial.println("Failed to read from DHT sensor!");
107
108    return;
109  }
110
111  Blynk.virtualWrite(V5, h);  //V5 is for Humidity
112
113  Blynk.virtualWrite(V6, t);  //V6 is for Temperature
114}
115
116void setup()
117{
118
119  Serial.begin(9600); // See the connection status in Serial Monitor
120  pinMode(MAGPIN,
121  INPUT_PULLUP); // Defining magnetic switch pin as input_pullup
122  dht.begin();
123
124  Blynk.begin(auth, ssid, pass);
125
126  // Setup a function to be called every
127  second
128  timer.setInterval(1000L, sendReadings);
129}
130
131void loop()
132{
133
134  Blynk.run(); // Initiates Blynk
135  timer.run(); // Initiates SimpleTimer
136}