How to Use GPS atgm336H: Examples, Pinouts, and Specs

The ATGM336H is a high-performance GPS receiver module designed to deliver accurate and reliable positioning data. It features a built-in antenna, low power consumption, and a compact design, making it ideal for integration into a wide range of applications. This module supports multiple satellite navigation systems, including GPS, GLONASS, and BeiDou, ensuring robust performance in diverse environments.

• Automotive navigation systems
• Robotics and autonomous vehicles
• Internet of Things (IoT) devices
• Asset tracking and fleet management
• Outdoor sports and fitness devices
• Geographic surveying and mapping

The ATGM336H module is engineered for precision and efficiency. Below are its key technical details:

The ATGM336H module has a simple pinout for easy integration. Below is the pin configuration:

The ATGM336H module is straightforward to use in a circuit. Follow the steps below to integrate it into your project:

1. Power Supply: Connect the VCC pin to a 3.3V or 5V power source and the GND pin to ground.
2. UART Communication: Connect the TXD pin to the RX pin of your microcontroller and the RXD pin to the TX pin of your microcontroller.
3. PPS Signal (Optional): If precise timing is required, connect the PPS pin to a GPIO pin on your microcontroller.

• Ensure the module has a clear view of the sky for optimal satellite reception.
• Avoid placing the module near sources of electromagnetic interference (e.g., motors, high-frequency circuits).
• Use a decoupling capacitor (e.g., 10 µF) between VCC and GND to stabilize the power supply.

Below is an example of how to interface the ATGM336H with an Arduino UNO to read GPS data:

• Connect VCC to the 5V pin on the Arduino.
• Connect GND to the GND pin on the Arduino.
• Connect TXD on the ATGM336H to pin 4 (software RX) on the Arduino.
• Connect RXD on the ATGM336H to pin 3 (software TX) on the Arduino.

#include <SoftwareSerial.h>

// Define software serial pins for GPS communication
SoftwareSerial gpsSerial(4, 3); // RX = pin 4, TX = pin 3

void setup() {
  Serial.begin(9600);          // Initialize serial monitor
  gpsSerial.begin(9600);       // Initialize GPS module communication
  Serial.println("GPS Module Initialized");
}

void loop() {
  // Check if data is available from the GPS module
  while (gpsSerial.available()) {
    char c = gpsSerial.read(); // Read one character from GPS
    Serial.print(c);           // Print the character to the serial monitor
  }
}

• The default baud rate of the ATGM336H is 9600 bps. If you need to change it, use configuration commands via the RXD pin.
• Use a GPS parsing library (e.g., TinyGPS++) for easier handling of NMEA sentences.

1. No GPS Data Output

   • Cause: The module may not have a clear view of the sky.
   • Solution: Move the module to an open area with minimal obstructions.

2. Incorrect or Inconsistent Positioning

   • Cause: Insufficient satellite signals or interference.
   • Solution: Ensure the module is away from sources of interference and has a stable power supply.

3. Module Not Responding

   • Cause: Incorrect wiring or baud rate mismatch.
   • Solution: Double-check the connections and ensure the baud rate is set to 9600 bps.

4. PPS Signal Not Detected

   • Cause: PPS pin not connected or timing not configured.
   • Solution: Verify the connection to the PPS pin and consult the module's datasheet for timing configuration.

Q: Can the ATGM336H work indoors?
A: The module is designed for outdoor use and requires a clear view of the sky for optimal performance. It may work indoors near windows but with reduced accuracy.

Q: How many satellites does the ATGM336H support?
A: The module can track up to 22 satellites simultaneously, depending on the satellite system in use.

Q: Can I increase the update rate beyond 1 Hz?
A: Yes, the update rate is configurable up to 10 Hz using specific configuration commands via the UART interface.

Q: Is an external antenna required?
A: No, the ATGM336H has a built-in antenna. However, an external antenna can be used for improved performance in challenging environments.

By following this documentation, you can effectively integrate and utilize the ATGM336H GPS module in your projects.