 byte mac[] = {
   0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED
 };
+
 IPAddress ip(192, 168, 2, 15);
 
 // Google DNS


// this method makes a HTTP connection to the server:
void httpRequest(int sensor, int value) {
  // close any connection before send a new request.
  // This will free the socket on the WiFi shield
  sendClient.stop();

  String path = "/coleta/" + String(sensor) + "/" + String(value);

  // if there's a successful connection:
  int connected = sendClient.connect(serverName, 80);
  if (connected) {
    Serial.println("connected");
    // send the HTTP PUT request:
    sendClient.println("GET " + path + " HTTP/1.1");
    sendClient.println("Host: smart-trash.app.hackinpoa.tsuru.io");
