HGLRC M100-5883 GPS Compass Module User Manual

1. Introduction

Figure 1.1: The HGLRC M100-5883 GPS Compass Module.

The HGLRC M100-5883 GPS Compass Module is a compact and high-performance navigation solution designed for FPV (First Person View) fixed-wing aircraft and UAVs (Unmanned Aerial Vehicles). Featuring an upgraded 10th generation chip and an integrated QMC5883 compass, this module provides rapid satellite acquisition and accurate positioning data, enhancing the reliability and functionality of your aerial platforms.

2. Key Features

• Upgraded 10th Generation Chip: Incorporates the latest technology for enhanced performance and reliability.
• Integrated QMC5883 Compass: Provides accurate heading information, simplifying setup and reducing the need for separate modules.
• Multi-Mode Positioning: Supports GPS, Galileo, and BDS satellite systems for fast and reliable satellite acquisition in various environments.
• Stable Signal Reception: Utilizes a carefully modulated ceramic antenna and external expansion PCB for effective satellite signal reception.
• Compact and Lightweight Design: Measures 21mm x 21mm and weighs only 7.73g, ideal for space-constrained applications.
• Compatibility: Suitable for FPV fixed-wing UAVs and compatible with popular flight controllers running Betaflight and INAV.

3. Package Contents

Verify that all items are present in your package:

Figure 3.1: Package contents including the HGLRC M100-5883 GPS module, connecting cable, and other accessories.

• HGLRC M100-5883 GPS Compass Module
• Connecting Cable
• Stickers (if included)
• Quality Certificate (if included)

4. Installation and Setup

4.1 Physical Installation

The HGLRC M100-5883 module is designed to be compact. Mount the module securely on your aircraft, ensuring it is as far as possible from high-current wires, motors, and ESCs to minimize electromagnetic interference, which can affect GPS and compass performance.

Figure 4.1: The HGLRC M100-5883 module measures 21mm x 21mm and weighs 7.73g.

4.2 Wiring Diagram

Connect the GPS module to your flight controller according to the following diagram. Ensure correct polarity and pin assignments (TX to RX, RX to TX, SDA to SDA, SCL to SCL, 5V to 5V, GND to GND).

Figure 4.2: Pinout of the HGLRC M100-5883 GPS module.

Figure 4.3: Wiring connections between the HGLRC M100-5883 GPS module and a flight controller.

• SCL: I2C Clock Line
• SDA: I2C Data Line
• RX: UART Receive (connect to Flight Controller TX)
• TX: UART Transmit (connect to Flight Controller RX)
• 5V: Power Input (3.7V - 5V recommended)
• GND: Ground

Important: Some users have reported that the module requires at least 3.7V to operate normally, despite some specifications indicating 3.3V. Ensure your power supply meets this requirement for stable operation.

4.3 Betaflight Configuration

To configure the GPS module in Betaflight:

1. Connect your flight controller to Betaflight Configurator.
2. Navigate to the Ports tab.
3. Identify the UART port to which your GPS module is connected (e.g., UART3).
4. Set the Sensor Input for that UART to GPS.
5. Set the Baud Rate to 115200.
6. Go to the Configuration tab.
7. Enable the GPS feature.
8. Select UBLOX as the GPS protocol.
9. Save and reboot your flight controller.

Figure 4.4: Betaflight Ports and Configuration tab settings for GPS.

After successful configuration and powering on the aircraft, the GPS indicator light on the module should be active, and the GPS icon should appear in the Betaflight OSD or configurator's sensor status display.

4.4 INAV Configuration

To configure the GPS module in INAV:

1. Connect your flight controller to INAV Configurator.
2. Navigate to the Ports tab.
3. Identify the UART port to which your GPS module is connected (e.g., UART3).
4. Set the Sensor Input for that UART to GPS.
5. Set the Baud Rate to 115200.
6. Go to the Configuration tab.
7. Enable the GPS feature.
8. Select UBLOX as the GPS protocol.
9. For the integrated compass, navigate to the Sensors & Buses section.
10. Select QMC5883 for the Magnetometer.
11. Save and reboot your flight controller.

Figure 4.5: INAV Ports tab settings for GPS.

Figure 4.6: INAV Sensors & Buses tab for QMC5883 compass selection.

Upon powering the aircraft, the indicator lights on the GPS module should be active, and the GPS and compass icons should be visible in the INAV OSD or configurator's sensor status display.

5. Operating Instructions

5.1 Satellite Acquisition

For optimal satellite acquisition, operate the aircraft in an open area with a clear view of the sky.

• Cold Start: When first powered on or after a long period of inactivity, the module may take 25-30 seconds to achieve a 3D fix.
• Warm Start: Subsequent acquisitions after a brief power cycle are typically much faster, often within a few seconds.
• The module supports GPS, Galileo, and BDS for faster and more reliable locks.
• A solid blue LED on the module indicates a successful GPS lock.

5.2 Compass Calibration

The integrated QMC5883 compass requires calibration for accurate heading information. Perform compass calibration in your flight controller software (Betaflight/INAV) according to their respective documentation. It is recommended to calibrate the compass at your primary flying location and recalibrate if you experience significant changes in magnetic environment or travel long distances.

6. Maintenance

• Physical Inspection: Regularly check the module and its connections for any signs of damage, loose wires, or corrosion.
• Environmental Protection: While robust, avoid exposing the module to extreme moisture, dust, or direct impact. Consider conformal coating for enhanced protection in harsh environments.
• Firmware Updates: Keep your flight controller firmware updated, as this may include improvements for GPS and compass functionality.

7. Troubleshooting

8. Specifications

9. Warranty and Support

HGLRC products are manufactured to high-quality standards. For warranty information, please refer to the terms and conditions provided at the time of purchase or contact HGLRC customer support directly.

For technical assistance, troubleshooting, or further inquiries, please visit the official HGLRC website or contact their customer service department.