Description
The GY-NEO-8M V2 represents the pinnacle of multi-GNSS navigation technology for flight controllers, drones, UAVs, and embedded systems requiring flexible antenna placement. Built around the advanced u-blox NEO-8M / NEO-M8N chipset, this module delivers unprecedented positioning accuracy, faster satellite acquisition, and support for four global navigation constellations simultaneously.
Unlike the built-in ceramic antenna version, this variant is specifically engineered for use with an external active antenna (not included, sold separately). This design is ideal for applications where the GPS module must be mounted inside an enclosure, behind a carbon fiber or metal panel, in a waterproof housing, or in any location with limited sky visibility. By placing the external antenna in an optimal location — such as on a vehicle roof, drone top plate, outdoor mast, or marine deck — you achieve superior signal reception, faster fixes, and more reliable navigation data even in challenging environments.
The heart of this module is the 72-channel u-blox M8 engine capable of concurrently tracking GPS, GLONASS, BeiDou, Galileo, QZSS, and SBAS (WAAS/EGNOS/MSAS) satellite systems. This multi-GNSS capability provides access to over 50 visible satellites in optimal conditions, resulting in time-to-first-fix as fast as 27 seconds cold start and sub-1-second hot starts. Position accuracy reaches 2.0 meters CEP with SBAS corrections, making it suitable for precision applications.
The module features a u.FL / IPEX connector for connecting a wide range of external active GNSS antennas (3V to 5V active antennas, typical gain 15dB to 28dB). For users requiring even greater flexibility, an SMA adapter cable allows conversion to standard SMA connectors.
Key onboard features include EEPROM memory that permanently stores all configuration parameters (baud rate, update rate, NMEA or UBX message settings) even after power loss, and a rechargeable backup battery that maintains the real-time clock and ephemeris data for hot starts. The NEO-M8N variant also includes internal Flash memory for firmware updates and future GNSS system upgrades.
Operating from a wide 3V to 5V DC input with onboard voltage regulation, the GY-NEO-8M V2 is compatible with both 3.3V and 5V logic systems. It provides UART TTL serial communication at a configurable baud rate (default 9600bps), making it plug-and-play compatible with Arduino, ESP32, STM32, Raspberry Pi, and popular flight controllers including MWC (MultiWii) and APM 2.5/2.6.
The bright LED signal indicator provides immediate visual feedback of GNSS fix status — regular blinking confirms a successful 3D satellite lock. For advanced users, the module can be configured using u-blox u-center software via a USB-to-TTL adapter, allowing detailed performance monitoring, parameter customization, and firmware updates.
Whether you are building a professional drone with redundancy requirements, a fleet tracking system requiring meter-level accuracy, an autonomous vehicle needing reliable positioning in urban canyons, or an IoT device with remote antenna placement, the GY-NEO-8M V2 with external antenna support offers the highest level of multi-GNSS performance, configuration persistence, and installation flexibility available in this form factor.
Key Features
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Multi-Constellation GNSS – 72-channel u-blox M8 engine concurrently tracks GPS, GLONASS, BeiDou, Galileo, QZSS, and SBAS for superior accuracy and reliability
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External Active Antenna Support – u.FL/IPEX connector allows flexible antenna placement for optimal signal reception
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Next-Generation Chipset – NEO-8M/M8N design with backward compatibility to NEO-7 and NEO-6 families
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High Sensitivity – -167 dBm navigation sensitivity for reliable operation in weak signal environments
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Onboard EEPROM – Permanently saves all user settings (baud rate, update rate, message configuration) even after power loss
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Rechargeable Backup Battery – Maintains RTC and ephemeris data for hot starts (<1s TTFF)
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Internal Flash Memory – Supports firmware updates for future GNSS system upgrades (on M8N variants)
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Wide Voltage Compatibility – Operates from 3V to 5V DC with onboard regulation; compatible with 3.3V and 5V logic systems
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Configurable Update Rate – Supports up to 10Hz position update rate for real-time tracking applications
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UART TTL Interface – Simple 4-wire connection (VCC, GND, TX, RX) for seamless microcontroller integration
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LED Signal Indicator – Provides real-time visual confirmation of satellite fix status
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Compact Form Factor – Small module footprint for easy integration into space-constrained projects
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Wide Operating Temperature – -40°C to +85°C suitable for outdoor and industrial applications
Technical Specifications
| Specification | Value |
|---|---|
| GPS Chipset | u-blox NEO-8M / NEO-M8N (72-channel) |
| Supported GNSS | GPS L1C/A, GLONASS L1OF, BeiDou B1, Galileo E1B/C, QZSS L1C/A, SBAS |
| Operating Voltage | 3V – 5V DC |
| Default Baud Rate | 9600 bps (configurable: 4800 – 115200 bps) |
| Communication Interface | UART TTL (TX/RX) |
| Tracking Sensitivity | -167 dBm |
| Position Accuracy | 2.0m – 2.5m CEP (with SBAS) |
| Update Rate | Up to 10Hz (configurable) |
| Cold Start Time | <27 seconds (typical) |
| Warm Start Time | <28 seconds (typical) |
| Hot Start Time | <1 second (typical) |
| Antenna Connector | u.FL / IPEX (for external active antenna) |
| Antenna Requirement | Active GNSS antenna, 3V–5V, gain 15dB–28dB (not included) |
| Module Dimensions | 25mm × 35mm (approx.) |
| Mounting Holes | 3mm diameter |
| Operating Temperature | -40°C to +85°C |
