No data from U-Blox Neo-6M I'm trying to get Neo-6M module to work with Arduino Uno, but it just isn't transmitting any data. It is getting 3.3V.
I've tried measuring the Amps and I got zero, so I'm afraid that the module could be broken.  

Neo-6M wiring:

Arduino wiring (power):

Arduino wiring (data):


Arduino code:

#include &lt;TinyGPS++.h&gt;
#include &lt;SoftwareSerial.h&gt;
/*
   This sample sketch demonstrates the normal use of a TinyGPS++ (TinyGPSPlus) object.
   It requires the use of SoftwareSerial, and assumes that you have a
   4800-baud serial GPS device hooked up on pins 4(rx) and 3(tx).
*/
static const int RXPin = 4, TXPin = 3;
static const uint32_t GPSBaud = 9600;

// The TinyGPS++ object
TinyGPSPlus gps;

// The serial connection to the GPS device
SoftwareSerial ss(RXPin, TXPin);

void setup()
{
  Serial.begin(9600);
  ss.begin(GPSBaud);

  Serial.println(F("DeviceExample.ino"));
  Serial.println(F("A simple demonstration of TinyGPS++ with an attached GPS module"));
  Serial.print(F("Testing TinyGPS++ library v. "));     Serial.println(TinyGPSPlus::libraryVersion());
  Serial.println(F("by Mikal Hart"));
  Serial.println();
}

void loop()
{
  // This sketch displays information every time a new sentence is correctly encoded.
  while (ss.available() &gt; 0)
    if (gps.encode(ss.read()))
      displayInfo();

  if (millis() &gt; 5000 &amp;&amp; gps.charsProcessed() &lt; 10)
  {
    Serial.println(F("No GPS detected: check wiring."));
    while(true);
  }
}

void displayInfo()
{
  Serial.print(F("Location: ")); 
  if (gps.location.isValid())
  {
    Serial.print(gps.location.lat(), 6);
    Serial.print(F(","));
    Serial.print(gps.location.lng(), 6);
  }
  else
  {
    Serial.print(F("INVALID"));
  }

  Serial.print(F("  Date/Time: "));
  if (gps.date.isValid())
  {
    Serial.print(gps.date.month());
    Serial.print(F("/"));
    Serial.print(gps.date.day());
    Serial.print(F("/"));
    Serial.print(gps.date.year());
  }
  else
  {
    Serial.print(F("INVALID"));
  }

  Serial.print(F(" "));
  if (gps.time.isValid())
  {
    if (gps.time.hour() &lt; 10) Serial.print(F("0"));
    Serial.print(gps.time.hour());
    Serial.print(F(":"));
    if (gps.time.minute() &lt; 10) Serial.print(F("0"));
    Serial.print(gps.time.minute());
    Serial.print(F(":"));
    if (gps.time.second() &lt; 10) Serial.print(F("0"));
    Serial.print(gps.time.second());
    Serial.print(F("."));
    if (gps.time.centisecond() &lt; 10) Serial.print(F("0"));
    Serial.print(gps.time.centisecond());
  }
  else
  {
    Serial.print(F("INVALID"));
  }

  Serial.println();
}
It isn't enough to power the module with 3.3V. You also have to level-shift the Arduino's 5V TX signal to 3.3V that is acceptable by the GPS module's RX pin, using a 1:2 voltage divider. 



You should also know that the Arduino's 3.3 V pin can't source more than 50 mA; your module's current draw may sometimes exceed this limit (max is 67 mA). Instead, connect the Arduino's 5 V pin (which can source up to 500 mA) to the VCC of the GPS module through an LM1117T 3.3 V regulator:



The input goes the Arduino 5V pin and the output goes to the NEO-6M VCC. Connect all GNDs together.

Then run a basic sketch like this:

#include "SoftwareSerial.h"

SoftwareSerial gps(4,3);

void setup(){
  Serial.begin(9600);
  gps.begin(9600);
}

void loop(){
  while (gps.available())
    Serial.write(gps.read());
}


This will basically make the Arduino grab any NMEA data sent by the NEO-6M and forward it to your PC's serial monitor. If you receive legible data, it means you've established comms with the module. You can then upload your original sketch.