Baud rate problem using a HGLRC M80 GPS module

Projects Networking, Protocols, and Devices
1

Hello everyone!

I would like to use an HGLRC M80 GPS module with an Arduino UNO R3 board. I used this code to display NMEA data:

#include <SoftwareSerial.h>

const int RXPin = 9;
const int TXPin = 10;

SoftwareSerial gpsSerial(RXPin, TXPin);

void setup() {
  Serial.begin(115200);
  gpsSerial.begin(115200);
}

void loop() {
  while (gpsSerial.available()) {
    char data = gpsSerial.read();
    Serial.print(data);
  }
}

I have set the baud rate to 115200 as specified in the module specifications. However, the terminal displays wrong characters (see screenshot). I also tried all the standard baud rates (9600, 38400, 57600...).

Here are the specifications of the module:

"Item Name: HGLRC M80 GPS
Chip: M8030
Power Supply: 5V
Antenna: Ceramic Antenna
Receiving Format: GPS,GLONASS,GALILEO,QZSS,SBAS,BDS
Receiving Channel: 72 Searching Channel
Support Rate: 115200dps
Output Frequency: 1Hz-10Hz,Default 10Hz
Speed Precison: 0.05 m/s
Level Positioning Precison: 2D Acc1.5m(ln Open Sky)
Receiving Sensitivity: Trace -167dBm
Capture -160dBm
Dynamic Characteristics: Max Height:50000m
Max Speed: 500m/s
Max Acceleration: 4G
Working Temperature: -40℃-+85℃
Storage Temperature: -40℃-+105℃
Size: 18.5mm x 18.5mm x 7.1mm
Weight: 9.4g"

HGLRC M80 GPS for FPV Racing Drone – HGLRC Company

Do you have any suggestions for solving the problem?

Thank you in advance.

Baud rate problem screenshot
Baud rate problem screenshot1840×352 30.8 KB

2

If the GPS has a default baud rate of 115200 then you will need to use an Arduino with a Hardware Serial port.

Software serial will only work reliably up to a baud rate of 19200, somtimes 38400.

3

Thank you for your reply! I will try to use the Rx (0) and Tx (1) hardware pins on the Arduino board.

4

The RX0 and TX0 hardware serial port is used for the program upload and Serial terminal.

5

Yes, I tried instead to use a 9V battery and switch on or off the built-in LED (pin 13) when more than 1 satellite is available, for example. This is just to test the GPS module. I use the TinyGPS++ library, but it still does not work. I will try to find out why.

6

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