M5Stack GPS/BDS Unit v1.1: Precision GPS for IoT & Robotics
11 Nov 2024
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If you’re looking for a high-performance GPS module for your IoT, robotics, or embedded projects, the M5Stack GPS/BDS Unit v1.1 (powered by the AT6668 chip) is an ideal choice. Compared with the M5Stack Mini GPS/BDS Unit (AT6558), the GPS/BDS Unit v1.1 is equipped with the latest features, offering superior precision, reliability, and real-time tracking capabilities.
Overview of M5Stack GPS/BDS Unit v1.1 (AT6668)
The M5Stack GPS/BDS Unit v1.1 is equipped with the advanced AT6668 chip, which supports both GPS and BeiDou satellite navigation systems, providing more comprehensive global coverage and increased accuracy in location tracking. This unit is designed for real-time positioning with high precision, making it suitable for applications that demand consistent and reliable location data.
Key Features:
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Dual-Satellite Support: The AT6668 chip offers simultaneous GPS and BeiDou functionality, making it ideal for applications in regions where BeiDou coverage is beneficial.
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Enhanced Precision: The GPS/BDS Unit v1.1 is built to deliver precise positioning, suitable for applications that require accurate location tracking, such as vehicle navigation, UAVs, and robotics.
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Wide Voltage Range: This unit supports a wide operating voltage, allowing integration with a variety of systems.
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Real-Time Positioning: With a fast and reliable positioning feature, it’s perfect for applications where continuous tracking and real-time data are critical.
| Specification | Parameter |
| SoC | AT6668 |
| Supported Systems | GPS/QZSS/BD2/BD3/GAL/GLO Frequencies: BDS: B1I+B1C GPS/QZSS/SBAS: L1 GALILEO: E1 GLONASS: R1 |
| Channels | 50 channels |
| Communication | UART communication, default 115200bps@8N1 |
| Positioning Accuracy | <1.5m (CEP50) |
| Update Rate | Max 10Hz |
| Protocol | NMEA0183 4.1 |
| Sensitivity | Tracking: -162dBm, Acquisition: -160dBm, Cold Start: -148dBm |
| Start Time | Cold Start: 23 seconds, Hot Start: 1 second |
| Power Consumption | DC5V/31.64mA |
| Product Size | 48*24*8mm |
| Package Size | 136*92*9mm |
| Product Weight | 12.3g |
| Package Weight | 17.7g |
Overview of M5Stack Mini GPS/BDS Unit (AT6558)
The M5Stack Mini GPS/BDS Unit is a more compact solution powered by the AT6558 chipset, supporting both GPS and BeiDou systems. Designed with size efficiency in mind, this unit is ideal for projects with space constraints, such as wearable technology, small IoT devices, and portable trackers. Although it lacks some of the advanced precision features of the GPS/BDS Unit v1.1, it still provides reliable location data for general-purpose applications.
Key Features:
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Compact Design: The Mini GPS/BDS Unit is highly compact, making it easy to embed into smaller devices or projects where space is limited.
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Dual-Satellite Support: Despite its size, it offers GPS and BeiDou support, allowing for basic positioning capabilities in various regions.
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Cost-Effective: For projects that don’t require high-precision tracking, this unit offers a budget-friendly alternative without compromising on basic GPS/BeiDou functionality.
| Resources | Parameter |
| Positioning accuracy | 2.5m |
| Channel | 56 |
| Positioning update frequency | 1-10Hz |
| Maximum speed | 515m/s |
| Maximum acceleration | <= 4g |
| Sensitivity | Tracking: -162dBm,Capture: -148dBm,Cold start: -146dBm |
| Start Time | Cold start: 35 seconds,Warm start: 32 seconds,Hot start: 1 second |
| Operating temperature | -40°C - 85°C |
| Net weight | 13g |
| Gross weight | 26g |
| Product Size | 48*24*8mm |
| Package Size | 67*53*12mm |
In-Depth Comparison
While the M5Stack Mini GPS was a popular option, it’s important to note that it was designed for basic tracking applications, making it more suited to smaller DIY projects. With the Mini GPS’s discontinuation, the GPS/BDS Unit v1.1 (AT6668) steps in to offer higher performance and broader application potential.
| Feature | GPS/BDS Unit v1.1 (AT6668) | Mini GPS/BDS Unit (AT6558) |
| Chipset | AT6668 | AT6558 |
|
Satellite Systems |
GPS + BeiDou | GPS + BeiDou |
| Precision | High accuracy for real-time positioning |
Standard accuracy for general applications |
| Best Use Cases | High-precision tracking, robotics, drones |
Compact devices, portable trackers, wearables |
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Power Requirements |
Wide voltage range | Standard voltage |
| Size | Slightly larger, allows for more features |
Compact, ideal for space- constrained projects |
| Cost | Higher price point for advanced features |
Budget-friendly for basic tracking needs |
Why Upgrade to M5Stack GPS/BDS Unit v1.1?
Compared to the M5Stack Mini GPS/BDS Unit (AT6558), the M5Stack GPS/BDS Unit v1.1 offers significant upgrades in terms of performance, reliability, and features:
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Enhanced Chipset: The AT6668 chip in the GPS/BDS Unit v1.1 outperforms the older AT6558 chip, delivering faster and more accurate positioning.
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Greater Precision: Perfect for applications where accurate location data is essential, such as industrial monitoring and autonomous navigation.
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More Stable Connectivity: With advanced satellite tracking capabilities, it ensures a stable connection for real-time tracking.
Ideal Use Cases for M5Stack GPS/BDS Unit v1.1
- Autonomous Vehicles & Drones:
- The high-precision tracking capabilities make it suitable for autonomous vehicles and UAVs, where real-time positioning is critical for navigation and safety.
- Robotics:
- For robotics applications, precise location data enables efficient movement and spatial awareness, making this module an excellent choice.
- Industrial IoT:
- In industrial IoT setups, reliable location tracking helps monitor assets, equipment, and operational efficiency in real-time.
Conclusion: A Smart Upgrade with M5Stack GPS/BDS Unit v1.1 (AT6668)
The M5Stack GPS/BDS Unit v1.1 is the go-to choice for developers looking for reliable, high-performance GPS tracking. Its dual-satellite support, advanced chipset, and high precision make it well-suited for a wide range of applications, from advanced robotics to industrial IoT.
The GPS/BDS Unit v1.1 is the recommended replacement for the M5Stack Mini GPS, bringing advanced features that support both current and future project demands. Choose the M5Stack GPS/BDS Unit v1.1 for dependable and precise tracking in your IoT, automation, and embedded systems projects.
