First commit

.gitignore

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+libraries

DHT/DHT.ino

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+#include <DHT.h>
+ 
+#define DHTPIN 2
+#define DHTTYPE DHT22
+ 
+DHT dht(DHTPIN, DHTTYPE);
+ 
+void setup() {
+  Serial.begin(9600);
+}
+ 
+void loop() {
+  float h = dht.readHumidity();
+  float t = dht.readTemperature();
+ 
+  if (isnan(t) || isnan(h)) {
+    Serial.print("Failed to read from DHT");
+  } else {
+    Serial.print("Hezetasune:");
+    Serial.print(h);
+    Serial.println("");
+    Serial.print("Tenperaturie:");
+    Serial.print(t);    
+    Serial.println("");    
+    delay(5000);
+  }
+}

Helloworld/Helloworld.ino

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+void setup() {
+  // put your setup code here, to run once:
+  Serial.begin(9600);
+}
+
+void loop() {
+  // put your main code here, to run repeatedly:
+  Serial.print("Hello world");
+  delay(5000);
+}

temp_sensor/temp_sensor.ino

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+#include <DHT.h>
+
+#define DHTPIN 2
+#define DHTTYPE DHT22
+
+float previousT = -1.0;
+//float t = -1.0;
+
+DHT dht(DHTPIN, DHTTYPE);
+void setup() {
+  // put your setup code here, to run once:
+  dht.begin();
+  Serial.begin(9600);
+}
+
+void loop() {
+  float h = dht.readHumidity();
+  float t = dht.readTemperature();
+
+  if (isnan(t) || isnan(h)){
+    Serial.println("Failed to read from DHT");
+    return;
+  }
+    Serial.print("Hezetasuna:");
+    Serial.print(h);
+    Serial.println("");
+
+    Serial.print("Tenperatura:");
+    Serial.print(t);    
+    Serial.println("");
+    if(previousT != -1.0) {
+      Serial.print("Aldaketa: ");
+      Serial.print(t - previousT);
+      Serial.println("");
+    }
+    
+    delay(5000);
+    previousT = t;
+}

temp_sensor_sdcard/temp_sensor_sdcard.ino

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+#include <SD.h>
+
+#include <SPI.h>
+#include <DHT.h>
+
+#define DHTPIN 2
+#define DHTTYPE DHT22
+const int chipSelect = 4;
+
+DHT dht(DHTPIN, DHTTYPE);
+void setup() {
+  // put your setup code here, to run once:
+  dht.begin();
+  Serial.begin(9600);
+
+  while (!Serial) {
+    ; // wait for serial port to connect. Needed for native USB port only
+  }
+
+
+  Serial.print("Initializing SD card...");
+
+  // see if the card is present and can be initialized:
+  if (!SD.begin(chipSelect)) {
+    Serial.println("Card failed, or not present");
+    // don't do anything more:
+    while (1);
+  }
+  Serial.println("card initialized.");
+}
+
+/* void writeSD(dataString) {
+  File dataFile = SD.open("datalog.txt", FILE_WRITE);
+
+  // if the file is available, write to it:
+  if (dataFile) {
+    dataFile.println(dataString);
+    dataFile.close();
+    // print to the serial port too:
+    Serial.println(dataString);
+  }
+  // if the file isn't open, pop up an error:
+  else {
+    Serial.println("error opening datalog.txt");
+  }
+}
+*/
+void loop() {
+  float h = dht.readHumidity();
+  float t = dht.readTemperature();
+
+  if (isnan(t) || isnan(h)){
+    Serial.println("Failed to read from DHT");
+    return;
+  }
+    Serial.print("Hezetasuna:");
+    Serial.print(h);
+    Serial.println("");
+
+    Serial.print("Tenperatura:");
+    Serial.print(t);    
+    Serial.println("");
+    
+    String dataString = "";
+    dataString = String(h) + ";" + String(t) + ";";
+    Serial.print("dataString:");
+    Serial.println(dataString + "\n");
+
+  File dataFile = SD.open("datalog.txt", FILE_WRITE);
+
+  // if the file is available, write to it:
+  if (dataFile) {
+    dataFile.println(dataString);
+    dataFile.close();
+    // print to the serial port too:
+    Serial.println(dataString);
+  }
+  // if the file isn't open, pop up an error:
+  else {
+    Serial.println("error opening datalog.txt");
+  }
+
+  
+    delay(5000);
+}