The Here4 Blue is a high-precision, dual-band RTK GNSS module designed for applications requiring accurate and stable positioning. It supports multiple global navigation satellite systems (GNSS), including GPS, Galileo, GLONASS, BeiDou, and QZSS, enabling robust performance across diverse operating environments.
Using multi-frequency signals and differential GNSS (DGNSS) correction data, the module is capable of achieving RTK fixed solutions rapidly, providing centimeter-level positional accuracy when used with a compatible correction source.
Beyond standard positioning functionality, the Here4 Blue integrates additional I/O and control capabilities. The device includes support for PWM or BDShot outputs, RC input, hot-shoe connectivity, and camera trigger interfaces, allowing it to function as a compact navigation and peripheral interface module for advanced UAV and robotics systems.
Compliance
NDAA compliant.
Designed to meet applicable requirements of the U.S. National Defense Authorization Act (NDAA) and related federal procurement restrictions.
All major chips and components are sourced and assembled in allied nations.
Key Features
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Multi-band RTK GNSS receiver with Bluetooth 5.2
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Centimeter-level positioning accuracy (with RTK corrections)
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Multi-constellation GNSS support
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Integrated peripheral and control interfaces
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DroneCAN FD communication (up to 8 Mbps)
Core Components
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u-blox NEO-F9P GNSS receiver (L1/L5)
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STM32H757 dual-core processor
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RM3100 magnetometer
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ICM42688 IMU
Expandability
The module communicates via DroneCAN FD, enabling high-speed and reliable data exchange with compatible flight controllers and embedded systems. Its architecture supports further integration and customization within DroneCAN-based ecosystems.
What’s Included
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1 × Here4 Blue GNSS Module
Country of Origin
Taiwan
For detailed technical documentation and integration guidance, refer to the manufacturer’s official resources.
