primer commit probando arduino, va el .ino de sensor de temperatura y humedad

libraries/Firmata/examples/EchoString/EchoString.ino

@@ -0,0 +1,44 @@
+/*
+ * Firmata is a generic protocol for communicating with microcontrollers
+ * from software on a host computer. It is intended to work with
+ * any host computer software package.
+ *
+ * To download a host software package, please clink on the following link
+ * to open the download page in your default browser.
+ *
+ * http://firmata.org/wiki/Download
+ */
+
+/* This sketch accepts strings and raw sysex messages and echos them back.
+ *
+ * This example code is in the public domain.
+ */
+#include <Firmata.h>
+
+void stringCallback(char *myString)
+{
+  Firmata.sendString(myString);
+}
+
+
+void sysexCallback(byte command, byte argc, byte *argv)
+{
+  Firmata.sendSysex(command, argc, argv);
+}
+
+void setup()
+{
+  Firmata.setFirmwareVersion(FIRMATA_FIRMWARE_MAJOR_VERSION, FIRMATA_FIRMWARE_MINOR_VERSION);
+  Firmata.attach(STRING_DATA, stringCallback);
+  Firmata.attach(START_SYSEX, sysexCallback);
+  Firmata.begin(57600);
+}
+
+void loop()
+{
+  while (Firmata.available()) {
+    Firmata.processInput();
+  }
+}
+
+