Raspberry Pi - GPS

This tutorial instructs you how to use Raspberry Pi with a NEO-6M GPS module. In detail, we will learn:

Apart from longitude, latitude, and altitude, Raspberry Pi is also able to read GPS speed (km/h), and date time from a NEO-6M GPS module.

Hardware Preparation

1×Raspberry Pi 4 Model B
1×NEO-6M GPS module
1×Jumper Wires
1×(Optional) Screw Terminal Adapter for Raspberry Pi

Or you can buy the following sensor kit:

1×DIYables Sensor Kit 30 types, 69 units
Disclosure: Some of the links provided in this section are Amazon affiliate links. We may receive a commission for any purchases made through these links at no additional cost to you. We appreciate your support.

Overview of NEO-6M GPS module

NEO-6M GPS module is a GPS module that can provide the following information:

  • Longitude
  • Latitude
  • Altitude
  • GPS speed (km/h)
  • Date time

The NEO-6M GPS Module Pinout

The NEO-6M GPS module has four pins:

  • VCC pin: This should be connected to the VCC (3.3V or 5V)
  • GND pin: This should be connected to GND (0V)
  • TX pin: This is used for serial communication and should be connected to the Serial RX pin on Raspberry Pi.
  • RX pin: This is used for serial communication and should be connected to the Serial TX pin on Raspberry Pi.
NEO-6M GPS module pinout

Wiring Diagram

The wiring diagram between Raspberry Pi and GPS module

This image is created using Fritzing. Click to enlarge image

Raspberry Pi Code

Reading GPS coordinates, speed (km/h), and date time

Detailed Instructions

  • Make sure you have Raspbian or any other Raspberry Pi compatible operating system installed on your Pi.
  • Make sure your Raspberry Pi is connected to the same local network as your PC.
  • Make sure your Raspberry Pi is connected to the internet if you need to install some libraries.
  • If this is the first time you use Raspberry Pi, See how to set up the Raspberry Pi
  • Connect your PC to the Raspberry Pi via SSH using the built-in SSH client on Linux and macOS or PuTTY on Windows. See to how connect your PC to Raspberry Pi via SSH.
  • Make sure you have the RPi.GPIO library installed. If not, install it using the following command:
sudo apt-get update sudo apt-get install python3-rpi.gpio
pip install pyserial
  • Create a Python script file gps.py and add the following code:
# This Raspberry Pi code was developed by newbiely.com # This Raspberry Pi code is made available for public use without any restriction # For comprehensive instructions and wiring diagrams, please visit: # https://newbiely.com/tutorials/raspberry-pi/raspberry-pi-gps import serial import time from datetime import datetime GPS_BAUD = 9600 # Create serial object for GPS GPS = serial.Serial('/dev/serial0', GPS_BAUD, timeout=1) print("Raspberry Pi - GPS Module") try: while True: if GPS.in_waiting > 0: gps_data = GPS.readline().decode('utf-8').strip() if gps_data.startswith('$GPGGA'): # Process GPS data using TinyGPS++ # You may need to adapt this part based on the structure of your GPS data print(f"Received GPS data: {gps_data}") # Extract relevant information data_parts = gps_data.split(',') latitude = data_parts[2] longitude = data_parts[4] altitude = data_parts[9] # Print extracted information print(f"- Latitude: {latitude}") print(f"- Longitude: {longitude}") print(f"- Altitude: {altitude} meters") # You can add more processing as needed time.sleep(1) except KeyboardInterrupt: print("\nExiting the script.") GPS.close()
  • Save the file and run the Python script by executing the following command in the terminal:
python3 gps.py
  • Check out the result on the Terminal.
PuTTY - Raspberry Pi

The script runs in an infinite loop continuously until you press Ctrl + C in the terminal.

Calculating the distance from current location to a predefined location

The below code computes the distance between the current spot and London (latitude: 51.508131, longitude: -0.128002).

Detailed Instructions

  • Install the geopy library for the distance calculation:
pip3 install geopy
  • Create a Python script file gps_distance.py and add the following code:
# This Raspberry Pi code was developed by newbiely.com # This Raspberry Pi code is made available for public use without any restriction # For comprehensive instructions and wiring diagrams, please visit: # https://newbiely.com/tutorials/raspberry-pi/raspberry-pi-gps import serial import time from geopy.distance import geodesic GPS_BAUD = 9600 LONDON_LAT = 51.508131 LONDON_LON = -0.128002 # Create serial object for GPS gps = serial.Serial('/dev/serial0', GPS_BAUD, timeout=1) print("Raspberry Pi - GPS Module") try: while True: if gps.in_waiting > 0: gps_data = gps.readline().decode('utf-8').strip() if gps_data.startswith('$GPGGA'): # Process GPS data using TinyGPS++ # You may need to adapt this part based on the structure of your GPS data print(f"Received GPS data: {gps_data}") # Extract relevant information data_parts = gps_data.split(',') latitude = float(data_parts[2]) longitude = float(data_parts[4]) # Print extracted information print(f"- Latitude: {latitude}") print(f"- Longitude: {longitude}") # Calculate distance to London using geopy current_location = (latitude, longitude) london_location = (LONDON_LAT, LONDON_LON) distance_km = geodesic(current_location, london_location).kilometers # Print calculated distance print(f"- Distance to London: {distance_km:.2f} km") time.sleep(1) except KeyboardInterrupt: print("\nExiting the script.") gps.close()
  • Save the file and run the Python script by executing the following command in the terminal:
python3 gps_distance.py
  • Check out the result on the Terminal.
PuTTY - Raspberry Pi

Video Tutorial

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