How to Use GE863 Cellular Module with GPS: Examples, Pinouts, and Specs

The GE863 Cellular Module with GPS is a compact and versatile communication module designed for GSM/GPRS connectivity. It also features integrated GPS functionality, making it ideal for applications requiring both wireless communication and location tracking. Its small form factor and robust design make it suitable for embedded systems, IoT devices, and mobile applications.

• Vehicle tracking and fleet management
• Remote monitoring and telemetry systems
• IoT devices requiring cellular connectivity and GPS
• Emergency response systems
• Asset tracking and geofencing

1. Power Supply: Connect the VCC pin to a stable power source (3.6V to 4.2V) and the GND pin to the ground.
2. Antenna Connections: Attach a GSM antenna to the ANT pin and a GPS antenna to the GPS_ANT pin for optimal signal reception.
3. UART Communication: Use the TXD and RXD pins to interface with a microcontroller or PC for GSM/GPRS communication. Similarly, use the GPS_TX and GPS_RX pins for GPS data.
4. Reset: Connect the RESET pin to a microcontroller or a push-button for resetting the module when needed.
5. GPIO Pins: Utilize the GPIO pins for custom input/output operations as required by your application.

• Ensure the power supply is stable and within the specified voltage range to avoid damage to the module.
• Use appropriate antennas for GSM and GPS to ensure reliable connectivity and location tracking.
• Place the module away from high-frequency noise sources to minimize interference.
• For UART communication, ensure the baud rate matches the module's default setting (typically 9600 bps) or configure it as needed.
• Use level shifters if interfacing with a microcontroller operating at a different voltage level.

Below is an example of how to interface the GE863 module with an Arduino UNO for sending an SMS and retrieving GPS coordinates.

• Connect VCC to a 3.7V power source.
• Connect GND to the Arduino's GND.
• Connect TXD to Arduino pin 10 (RX).
• Connect RXD to Arduino pin 11 (TX) via a voltage divider to step down the Arduino's 5V signal to 3.3V.
• Connect GPS_TX to Arduino pin 8 (RX for GPS).
• Connect GPS_RX to Arduino pin 9 (TX for GPS).

#include <SoftwareSerial.h>

// Define software serial pins for GSM and GPS communication
SoftwareSerial gsmSerial(10, 11); // RX, TX for GSM
SoftwareSerial gpsSerial(8, 9);  // RX, TX for GPS

void setup() {
  // Initialize serial communication
  Serial.begin(9600);          // For debugging
  gsmSerial.begin(9600);       // GSM module baud rate
  gpsSerial.begin(9600);       // GPS module baud rate

  Serial.println("Initializing GE863 Module...");
  delay(1000);

  // Send AT command to check GSM module response
  gsmSerial.println("AT");
  delay(1000);
  while (gsmSerial.available()) {
    Serial.write(gsmSerial.read()); // Print GSM module response
  }

  // Send SMS example
  sendSMS("+1234567890", "Hello from GE863!");
}

void loop() {
  // Read GPS data
  if (gpsSerial.available()) {
    String gpsData = gpsSerial.readString();
    Serial.println("GPS Data: " + gpsData);
  }
}

void sendSMS(String phoneNumber, String message) {
  gsmSerial.println("AT+CMGF=1"); // Set SMS mode to text
  delay(1000);
  gsmSerial.println("AT+CMGS=\"" + phoneNumber + "\"");
  delay(1000);
  gsmSerial.println(message); // Message content
  delay(1000);
  gsmSerial.write(26); // Send Ctrl+Z to send the SMS
  delay(1000);
  Serial.println("SMS Sent!");
}

1. Module Not Responding to AT Commands

   • Ensure the power supply is stable and within the specified range.
   • Verify the UART connections and ensure the correct baud rate is set.
   • Check if the RESET pin is unintentionally held low.

2. Poor GSM Signal

   • Ensure the GSM antenna is securely connected to the ANT pin.
   • Relocate the module to an area with better network coverage.

3. GPS Not Acquiring Location

   • Verify the GPS antenna is connected to the GPS_ANT pin.
   • Place the module in an open area with a clear view of the sky for better satellite reception.

4. High Power Consumption

   • Check for unnecessary operations or peripherals consuming power.
   • Use power-saving modes if supported by the module.

Q: Can the GE863 module operate on 5V?
A: No, the module requires a power supply in the range of 3.6V to 4.2V. Using 5V may damage the module.

Q: What is the default baud rate for the UART interface?
A: The default baud rate is typically 9600 bps, but it can be configured as needed.

Q: Does the module support 3G or 4G networks?
A: No, the GE863 module supports only GSM/GPRS networks.

Q: Can I use the GPS and GSM functionalities simultaneously?
A: Yes, the module is designed to support simultaneous GSM communication and GPS tracking.