Circuit Documentation

Summary

This circuit involves an Arduino UNO microcontroller interfaced with a GPS NEO 6M module. The Arduino UNO provides power to the GPS module and communicates with it using serial communication. The purpose of this setup is to read GPS data and display the latitude and longitude coordinates via the Arduino's serial monitor.

Component List

1. Arduino UNO

   • Description: A microcontroller board based on the ATmega328P.
   • Pins: UNUSED, IOREF, Reset, 3.3V, 5V, GND, Vin, A0, A1, A2, A3, A4, A5, SCL, SDA, AREF, D13, D12, D11, D10, D9, D8, D7, D6, D5, D4, D3, D2, D1, D0

2. GPS NEO 6M

   • Description: A GPS module used for obtaining location data.
   • Pins: VCC, RX, TX, GND

Wiring Details

Arduino UNO

• 5V: Connected to VCC of GPS NEO 6M
• GND: Connected to GND of GPS NEO 6M
• D3: Connected to RX of GPS NEO 6M
• D2: Connected to TX of GPS NEO 6M

GPS NEO 6M

• VCC: Connected to 5V of Arduino UNO
• GND: Connected to GND of Arduino UNO
• RX: Connected to D3 of Arduino UNO
• TX: Connected to D2 of Arduino UNO

Code Documentation

#include <SoftwareSerial.h>
#include <TinyGPS++.h>

// GPS NEO 6M connections
#define GPS_RX 2
#define GPS_TX 3

SoftwareSerial gpsSerial(GPS_RX, GPS_TX);
TinyGPSPlus gps;

void setup() {
  Serial.begin(9600);  // Start serial communication for debugging
  gpsSerial.begin(9600);  // Start GPS communication

  Serial.println("GPS Test Started...");
}

void loop() {
  // Read data from GPS module
  while (gpsSerial.available()) {
    char c = gpsSerial.read();
    Serial.write(c);  // Print raw GPS data to Serial Monitor

    gps.encode(c);  // Feed data to the TinyGPS++ library

    // If a valid GPS fix is available, display the coordinates
    if (gps.location.isUpdated()) {
      displayGPSData();  // Display current GPS data (lat/lng)
    }
  }

  // Optional: Delay to avoid flooding the serial monitor with too many updates
  delay(1000);  
}

void displayGPSData() {
  // Only display if the GPS location is valid
  if (gps.location.isValid()) {
    float latitude = gps.location.lat();
    float longitude = gps.location.lng();
    Serial.print("Latitude: ");
    Serial.print(latitude, 6);  // Print latitude with 6 decimal places
    Serial.print(" Longitude: ");
    Serial.println(longitude, 6);  // Print longitude with 6 decimal places
  } else {
    Serial.println("GPS signal not available.");
  }
}

Code Explanation

• Libraries: The code includes SoftwareSerial for serial communication and TinyGPS++ for parsing GPS data.
• Pin Definitions: GPS_RX and GPS_TX are defined for the GPS module's RX and TX pins.
• Setup Function: Initializes serial communication for both the Arduino and the GPS module.
• Loop Function: Continuously reads data from the GPS module, prints raw data to the serial monitor, and processes the data using the TinyGPS++ library. If a valid GPS fix is available, it calls displayGPSData() to print the latitude and longitude.
• displayGPSData Function: Checks if the GPS location is valid and prints the latitude and longitude to the serial monitor. If the GPS signal is not available, it prints an error message.