 // Message buffer
 char buffer[161];
 char buffer2[201];
+
+static byte addr[8];
 
 // Destination number of the message
 char destination[] = "5511947459448";

    // <YYYY-MM-DDTHH:MM:SS-03:00>;<type1>:<value1>:{unit1};...;<typeN>:<valueN>:{unitN}
    // Manually add 20 to the beginning of the buffer.
    buffer[0] = '2';
    buffer[1] = '0';
    int len = strlen(buffer);
    // Convert the date received to ISO format.
    for (i = 0; i < len; i++) {

}

// Get the values for each sensor
void calc_sensors()
{
  Wire.begin();
  delay(100);
  float val, minVal,maxVal;
