SparkFun Forums

[simon_23ignacio]

Good morning, How is your day going? My name is SIMON BECERRA, student in Panama, Technological University of Panama.

1 week ago I bought a product from SparkFun, called NEO m8p-2 GPS module.

I am connecting this module to an ARDUINO MEGA, using the neo m8p-2 module, you put RX-MOSI, TX-MISO, GND AND 5V, correctly to the ARDUINO MEGA.

I am using the TINY GPS Library in the ARDUINO program. using the simple test option.

I have left the m8p-2 module connected for about 1 hour and it does not send me an exact and precise location, it sends me 0 0 0 0 0 0 0 in all values.

I need your help, I am a student who is carrying out an innovative project at a national and perhaps international level.

On your blog it appears that it is compatible with Arduino (UNO OR MEGA), BUT it does not appear directly how to connect with these.
My question is: am I doing something wrong?, connecting everything wrong?, Are there any restrictions with the satellites around my country Panama?, Do I need anything else? something wrong with my library? which pins should (I connect rx tx vvc and gnd) something else?

Could you send me a blog or information on how to connect it correctly and directly to my arduino Mega or uno?

I am connecting the TX (from the neo m8p-2 module) to: RX (from the arduino)

I am connecting the RX (of the neo m8p-2 module) to: TX (of the arduino)

Unfortunately it does not send me information about my exact location.

Name: simón Ignacio becerra

Email: simon222019@outlook.es

Institutional email: simon.becerra@utp.ac.pa

Telephone number (whatsapp): +507 62335239

[[img]blob:https://web.whatsapp.com/ca56773f-ab96- ... 71123a9c9e[/img]
blob:https://web.whatsapp.com/ca56773f-ab96- ... 71123a9c9e

[TS-Russell]

Make sure you have the DSEL jumper closed (put a solder blob on it) when using the Tx & Rx https://learn.sparkfun.com/tutorials/gp ... e-overview (see the SPI section)

Also note that you need to be outside with a clear view of the sky and have the antenna properly attached (also in the guide above)

[simon_23ignacio]

Hi! It's me Simon

Thanks for the tip, I didn't know this.

That's why he always dials me 00000000 using the tyni GPS library.

Please, can you contact me in WhatsApp or email?

Pstt' taking about the anntena, I'm using neo 6mv2 anntena, is that correct for using it? Or have I to use another?

My WhatsApp is +507 62335239
Email: simon222019@outlook.es

[simon_23ignacio]

I'm also reading that I can use the mini usb port to get all the utilities of the neo m8p-2 module. Is this true, so I could avoid directly soldering the board

I mean, I can connect it directly from the GPS module to the usb port of my pc, so that it detects it, is that possible? Is the voltage compatible? It's not possible?
Is it better to only weld the dssel port?

[simon_23ignacio]

By @TS-Russell

Do you have any code you can use for this case? I live in Panama so I don't know if I can influence it.

[TS-Russell]

No, no whatsapp or email

Yes, you can use any of the methods described in the hookup guide....

No, I don't have any custom code...but you can easily make your own by using the library and code linked in the guide https://github.com/sparkfun/SparkFun_u- ... no_Library

[simon_23ignacio]

Hello, well what happens is that I did what you asked, I soldered the diesel and connected it but it still hasn't sent me the information I need, the location, any ideas what it could be? only rx, tx, vvc and gnd connector. It also tells me in the tyni gps code that the location that the code has is based in London.

How can I upload images so you can see everything I have done?

[simon_23ignacio]

Example1_EnableRTCM
Example2_StartRTCMBase
Example2_StartRTCMBase_virtual
Example3_BaseWithLCD
Example4_MovingBase_Base
Example5_MovingBase_Rover

Which one should I use to do what I want? (actualmente estoy utilizando el example4-movingBase_base. but it tells me that it does not detect my gps module

[simon_23ignacio]

from tyni gps im usyng this:

its using london ubication, does it implicate something?


#include <SoftwareSerial.h>

#include <TinyGPS.h>

/* This sample code demonstrates the normal use of a TinyGPS 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).
*/

TinyGPS gps;
SoftwareSerial ss(4, 3);

static void smartdelay(unsigned long ms);
static void print_float(float val, float invalid, int len, int prec);
static void print_int(unsigned long val, unsigned long invalid, int len);
static void print_date(TinyGPS &gps);
static void print_str(const char *str, int len);

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

Serial.print("Testing TinyGPS library v. "); Serial.println(TinyGPS::library_version());
Serial.println("by Mikal Hart");
Serial.println();
Serial.println("Sats HDOP Latitude Longitude Fix Date Time Date Alt Course Speed Card Distance Course Card Chars Sentences Checksum");
Serial.println(" (deg) (deg) Age Age (m) --- from GPS ---- ---- to London ---- RX RX Fail");
Serial.println("-------------------------------------------------------------------------------------------------------------------------------------");

ss.begin(4800);
}

void loop()
{
float flat, flon;
unsigned long age, date, time, chars = 0;
unsigned short sentences = 0, failed = 0;
static const double LONDON_LAT = 51.508131, LONDON_LON = -0.128002;

print_int(gps.satellites(), TinyGPS::GPS_INVALID_SATELLITES, 5);
print_int(gps.hdop(), TinyGPS::GPS_INVALID_HDOP, 5);
gps.f_get_position(&flat, &flon, &age);
print_float(flat, TinyGPS::GPS_INVALID_F_ANGLE, 10, 6);
print_float(flon, TinyGPS::GPS_INVALID_F_ANGLE, 11, 6);
print_int(age, TinyGPS::GPS_INVALID_AGE, 5);
print_date(gps);
print_float(gps.f_altitude(), TinyGPS::GPS_INVALID_F_ALTITUDE, 7, 2);
print_float(gps.f_course(), TinyGPS::GPS_INVALID_F_ANGLE, 7, 2);
print_float(gps.f_speed_kmph(), TinyGPS::GPS_INVALID_F_SPEED, 6, 2);
print_str(gps.f_course() == TinyGPS::GPS_INVALID_F_ANGLE ? "*** " : TinyGPS::cardinal(gps.f_course()), 6);
print_int(flat == TinyGPS::GPS_INVALID_F_ANGLE ? 0xFFFFFFFF : (unsigned long)TinyGPS::distance_between(flat, flon, LONDON_LAT, LONDON_LON) / 1000, 0xFFFFFFFF, 9);
print_float(flat == TinyGPS::GPS_INVALID_F_ANGLE ? TinyGPS::GPS_INVALID_F_ANGLE : TinyGPS::course_to(flat, flon, LONDON_LAT, LONDON_LON), TinyGPS::GPS_INVALID_F_ANGLE, 7, 2);
print_str(flat == TinyGPS::GPS_INVALID_F_ANGLE ? "*** " : TinyGPS::cardinal(TinyGPS::course_to(flat, flon, LONDON_LAT, LONDON_LON)), 6);

gps.stats(&chars, &sentences, &failed);
print_int(chars, 0xFFFFFFFF, 6);
print_int(sentences, 0xFFFFFFFF, 10);
print_int(failed, 0xFFFFFFFF, 9);
Serial.println();

smartdelay(1000);
}

static void smartdelay(unsigned long ms)
{
unsigned long start = millis();
do
{
while (ss.available())
gps.encode(ss.read());
} while (millis() - start < ms);
}

static void print_float(float val, float invalid, int len, int prec)
{
if (val == invalid)
{
while (len-- > 1)
Serial.print('*');
Serial.print(' ');
}
else
{
Serial.print(val, prec);
int vi = abs((int)val);
int flen = prec + (val < 0.0 ? 2 : 1); // . and -
flen += vi >= 1000 ? 4 : vi >= 100 ? 3 : vi >= 10 ? 2 : 1;
for (int i=flen; i<len; ++i)
Serial.print(' ');
}
smartdelay(0);
}

static void print_int(unsigned long val, unsigned long invalid, int len)
{
char sz[32];
if (val == invalid)
strcpy(sz, "*******");
else
sprintf(sz, "%ld", val);
sz[len] = 0;
for (int i=strlen(sz); i<len; ++i)
sz = ' ';
if (len > 0)
sz[len-1] = ' ';
Serial.print(sz);
smartdelay(0);
}

static void print_date(TinyGPS &gps)
{
int year;
byte month, day, hour, minute, second, hundredths;
unsigned long age;
gps.crack_datetime(&year, &month, &day, &hour, &minute, &second, &hundredths, &age);
if (age == TinyGPS::GPS_INVALID_AGE)
Serial.print("********** ******** ");
else
{
char sz[32];
sprintf(sz, "%02d/%02d/%02d %02d:%02d:%02d ",
month, day, year, hour, minute, second);
Serial.print(sz);
}
print_int(age, TinyGPS::GPS_INVALID_AGE, 5);
smartdelay(0);
}

static void print_str(const char *str, int len)
{
int slen = strlen(str);
for (int i=0; i<len; ++i)
Serial.print(i<slen ? str : ' ');
smartdelay(0);
}

[simon_23ignacio]

please TS-Russell would you help me?
It doesn't send me the location I want, where I am, I'm desperate

[YellowDog]

• Have you read the hookup guide?
• What antenna are you using?
• Is there a ground plane attached to your antenna?
• Are you outdoors with a clear view of the sky when testing?