Quectel l86 module not getting valid data with esp32

[envyst4]

Dear all,
I am sorry if this topic is covered elsewhere.
I have a problem making gps tracker using esp32 and l86 module. I am sure I almost tried everything I found on the internet. For example I use TiniGPS++ library and this code :

Using SoftwareSerial

#include <TinyGPS++.h>
#include <SoftwareSerial.h>
#define rxGPS 16
#define txGPS 17
 
long lat, lon;
SoftwareSerial gpsSerial(rxGPS, txGPS);
TinyGPSPlus gps;
 
void setup()
{
  Serial.begin(9600); // connect serial
  gpsSerial.begin(9600); // connect gps sensor
}
 
void loop()
{
  while (gpsSerial.available())     // check for gps data
  {
    if (gps.encode(gpsSerial.read()))   // encode gps data
    {
      Serial.print("SATS: ");
      Serial.println(gps.satellites.value());
      Serial.print("LAT: ");
      Serial.println(gps.location.lat(), 6);
      Serial.print("LONG: ");
      Serial.println(gps.location.lng(), 6);
      Serial.print("ALT: ");
      Serial.println(gps.altitude.meters());
      Serial.print("SPEED: ");
      Serial.println(gps.speed.mps());
 
      Serial.print("Date: ");
      Serial.print(gps.date.day()); Serial.print("/");
      Serial.print(gps.date.month()); Serial.print("/");
      Serial.println(gps.date.year());
 
      Serial.print("Hour: ");
      Serial.print(gps.time.hour()); Serial.print(":");
      Serial.print(gps.time.minute()); Serial.print(":");
      Serial.println(gps.time.second());
      Serial.println("---------------------------");
      delay(4000);
    }
  }
}

Using HardwareSerial

#include <TinyGPS++.h>
#include <HardwareSerial.h>
#define rxGPS 16
#define txGPS 17
 
long lat, lon;
HardwareSerial gpsSerial(1);


TinyGPSPlus gps;
 
void setup()
{
  Serial.begin(9600); // connect serial
  gpsSerial.begin(9600, SERIAL_8N1, rxGPS, txGPS); // connect gps sensor
}
 
void loop()
{
  while (gpsSerial.available())     // check for gps data
  {
    if (gps.encode(gpsSerial.read()))   // encode gps data
    {
      Serial.print("SATS: ");
      Serial.println(gps.satellites.value());
      Serial.print("LAT: ");
      Serial.println(gps.location.lat(), 6);
      Serial.print("LONG: ");
      Serial.println(gps.location.lng(), 6);
      Serial.print("ALT: ");
      Serial.println(gps.altitude.meters());
      Serial.print("SPEED: ");
      Serial.println(gps.speed.mps());
 
      Serial.print("Date: ");
      Serial.print(gps.date.day()); Serial.print("/");
      Serial.print(gps.date.month()); Serial.print("/");
      Serial.println(gps.date.year());
 
      Serial.print("Hour: ");
      Serial.print(gps.time.hour()); Serial.print(":");
      Serial.print(gps.time.minute()); Serial.print(":");
      Serial.println(gps.time.second());
      Serial.println("---------------------------");
      delay(4000);
    }
  }
}

I connected VCC and V_BCKP to 3.3V esp32, RX to GPIO17 and TX to GPIO16.

Result :

• Indoor = no valid data
• Outdoor = only date and time data valid
  
  

Please help me figure out where is the problem.

Best regards,
Nur Ardli Rachmat Saputra

[envyst4]

How to interface Quectel L80 GPS Module with Arduino

here is my refferences with that code

[horace]

can you display the raw NEMA data?
where is the antenna - place it outside or near to a window

[envyst4]

do u mean Serial.read() data? i'll go capture it
the antenna is built in with l86 right? i tried this outdoor. i can send my picture testing it

[envyst4]

[horace]

the $GPGAA log does not appear to be showing your latitude and longitude - in particular the number of satelites appears to be 0
it may take a few minutes to get a fix?
edit: looking at the photo there appears to be a lot of metal around which can shiled the antenna
put the antenna as high as you can clear of any metal obstructions

[envyst4]

this is now

edit : how to read raw NMEA data?

[horace]

the $GPGAA is now showing latitude and longitude and 7 satelites
your original program should now work

[envyst4]

OMG, how can this make my program work. I spent like 3 days with no result. Thank you very much Horace. May good fortune be with you.