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--- iothings:proiecte:2021:temphumiditymonitoring [2022/01/28 00:00]
maria.iuga [Hardware Description]
+++ iothings:proiecte:2021:temphumiditymonitoring [2022/01/28 00:26] (current)
maria.iuga [Project implementation]
@@ Line 29: / Line 29: @@
 The main libraries used for the project are:
-  * **DHT.h** is used an Arduino library for DHT11, DHT12 and other temperature and humidity sensors.
+  * **DHT.h** is used an Arduino library for DHT11, DHT12 and other temperature and humidity sensors;
   * **Wifi.h** is used for ESP32 to connect with the network and communicate with the IFTTT service.
 ===== Project implementation =====
+Arduino IDE functions used to record and send the data from the sensor to Webhooks from IFTTTT.
 <code>
-void setup ()
+void setup () {
 //initialize the serial monitor for debugging
-	Serial.begin(115200);
+ Serial.begin(115200);
+ Serial.println("DHT11 sensor!");
+//call begin to start sensor
+ dht.begin();
+// Connect to Wi-Fi
+ WiFi.begin(ssid, password);
+ while (WiFi.status() != WL_CONNECTED) {
+   delay(500);
+   Serial.print(".");
+  }
+  Serial.println("");
+  Serial.println("WiFi connected");
+}
+</code>
+Two rules were set in the project.
+.If the temperature is higher than 25 C, an email is sent through an applet (named high temp) with the message “Temperature too high!”;
+<code>
+if (t > high_temp ){
+    if (!client.connect(host, httpPort)) {
+      Serial.println("connection failed");
+      return;
+    }
+    else
+    Serial.println("conected");
+    client.print(String("POST ") + url_high_low_temp + " HTTP/1.1\r\n" +
+    "Host: " + host + "\r\n" +
+    "Content-Type: application/x-www-form-urlencoded\r\n" +
+    "Content-Length: 41\r\n\r\n" +
+    "value1=" + t +
+    "&value2="+"Temperature too high "+"\r\n");
+    delay(15000);
+}
+  </code>
+.If the temperature is lower than 24 C, an email is sent through the same applet with the message “Temperature too low!”.
+<code>
+if (t < low_temp ){
+  if (!client.connect(host, httpPort)) {
+      Serial.println("connection failed");
+      return;
+  }
+  else
+  Serial.println("conected");
+  client.print(String("POST ") + url_high_low_temp + " HTTP/1.1\r\n" +
+  "Host: " + host + "\r\n" +
+  "Content-Type: application/x-www-form-urlencoded\r\n" +
+  "Content-Length: 40\r\n\r\n" +
+  "value1=" + t +
+  "&value2=" + "Temperature too low "+"\r\n");
+  delay(15000);
+ }
 </code>
@@ Line 44: / Line 99: @@
 The temperature and humidity data are sent to Adafruit IO platform through two applets named temperature and humidity.
-{{ :iothings:proiecte:2021:img5.png?700 |}}
+{{ :iothings:proiecte:2021:img51.png?700 |}}
 The applet Emergency Email Transmission receives two values via Webhooks and it uses the first value to display the temperature recorded and the second value display the warning message accordingly to the temperature recorded (high/low) then sends an email structured like in below image.
@@ Line 52: / Line 107: @@
 The emails sent by the applet are as follows and differs, as two rules are set.
-{{ :iothings:proiecte:2021:imag41.png?700 |}}
+{{ :iothings:proiecte:2021:imag31.png?700 |}}