1. Introducció i finalview
The Beitian BK-280 is a 9th generation Beidou GNSS module designed for high-precision positioning and navigation. This compact and lightweight module is ideal for various applications, including racing drones, FPV systems, unmanned aerial vehicles (UAVs), and fixed-wing aircraft. It offers powerful satellite search capabilities, high sensitivity, and low power consumption to provide accurate location data.
This manual provides essential information for the proper setup, operation, and maintenance of your BK-280 GNSS module.
2. Característiques del producte
- Powerful Satellite Search Function: Quickly acquires and tracks multiple satellite systems for reliable positioning.
- Accurate Data Acquisition: Provides precise location information essential for navigation and flight control.
- High Sensitivity, Precise Positioning, Low Power Consumption: Optimized for performance in demanding environments while conserving energy.
- Lleuger i compacte: Designed for easy integration into various platforms without adding significant weight.
- Serial Data Output: Location information is acquired via satellite signals and output to the connected device via a serial port.
3. Especificacions


| Paràmetre | Valor |
|---|---|
| Model | BK-280 |
| Dimensions | 28 x 28 x 8.4 mm |
| Pes | 11.8 g |
| Acquisition - Cold Start | 24 s |
| Acquisition - Hot Start | 2s |
| Acquisition - AGPS Time To First Fix | 2s |
| Data Output - Baud Rate | 4800bps - 921600bps (Default: 115200bps) |
| Data Output - Level | Nivell TTL |
| Data Output - Protocol | NMEA, UBX |
| Data Output - Update Rate | 0.25Hz - 25Hz (Default: 1Hz) |
| FLASH | With FLASH, configuration can be changed and retained after power loss. |
| Work Restrictions - High | 80,000 m |
| Work Restrictions - Speed | 500 m/s |
| Work Restrictions - Dynamics | ≤4g |
| Power Consumption - Voltage | DC 3.6V-5.5V (Typical: 5.0V) |
| Power Consumption - Current | 25mA/5.0V |
| paquet | 1.25mm 6-pins connector |
| Temperatura de funcionament | -40 °C ~ +85 °C |
| Temperatura d'emmagatzematge | -40 °C ~ +105 °C |
| Built-in LED - TX LED | Blue, flashes when data is output. |
| Built-in LED - PPS LED | Red, not bright when GPS not fixed, flashes when fixed. |
4. Configuració
Proper installation and connection are crucial for the optimal performance of your BK-280 GNSS module. Follow these general guidelines:
- Muntatge: Securely mount the module in a location with a clear view of the sky, away from potential electromagnetic interference (EMI) sources such as motors, ESCs, and video transmitters. Ensure the antenna side faces upwards.
- Cablejat: Connect the module to your flight controller or host device using the provided 6-pin connector. Typically, the connections include:
- VCC: Power input (3.6V-5.5V, typically 5V).
- GND: Connexió a terra.
- TX (transmissió): Connects to the RX (Receive) pin of your flight controller/host for data output from the GPS module.
- RX (Recepció): Connects to the TX (Transmit) pin of your flight controller/host for configuration commands to the GPS module (if supported and required).
- PPS (Pulse Per Second): Provides a precise timing signal, often used for synchronization.
- Configuració: Depending on your flight controller or host device, you may need to configure the serial port settings (e.g., baud rate, protocol like NMEA or UBX) to match the module's default or desired settings. The default baud rate is 115200bps.


5. Instruccions de funcionament
Once the BK-280 GNSS module is correctly installed and powered, it will begin searching for satellite signals. The operation typically involves the following steps:
- Encès: Apply power (3.6V-5.5V) to the VCC and GND pins. The blue TX LED will flash when data is being output.
- Adquisició de satèl·lits: Place the module in an open area with a clear view of the sky. The module will perform a cold start (approx. 24s) or hot start (approx. 2s) to acquire satellite signals.
- GPS Fix Indication: The red PPS LED will remain off until a GPS fix is achieved. Once a fix is established, the PPS LED will flash, indicating successful positioning.
- Sortida de dades: The module will continuously output NMEA or UBX protocol data via its TX pin. This data includes latitude, longitude, altitude, speed, and other navigation information. Your connected flight controller or host device will process this data for its intended application.

6. Manteniment
The Beitian BK-280 GNSS module is designed for durability, but proper care can extend its lifespan and ensure consistent performance:
- Mantenir net: Regularly inspect the module for dust or debris. Use a soft, dry cloth to gently clean the surface. Avoid using liquids or harsh chemicals.
- Protecció del medi ambient: While the module operates in a wide temperature range, avoid exposing it to extreme temperatures, direct sunlight for prolonged periods, or high humidity.
- Protecció física: Protect the module from physical impact or excessive vibration, which can damage internal components.
- Integritat del cable: Ensure all connecting cables are securely attached and free from damage. Damaged cables can lead to intermittent connections or data loss.
7. Solució De Problemes
If you encounter issues with your BK-280 GNSS module, consider the following troubleshooting steps:
- No GPS Fix (PPS LED not flashing):
- Assegureu-vos que el mòdul tingui una visió clara i sense obstacles view of the sky. Indoor use or areas with dense foliage/buildings can prevent satellite acquisition.
- Verify power supply (VCC and GND) is correct and stable (3.6V-5.5V).
- Check for strong electromagnetic interference (EMI) from other electronic components. Try relocating the module if possible.
- Allow sufficient time for a cold start (up to 24 seconds).
- No Data Output (TX LED not flashing):
- Confirm the module is receiving power.
- Check the serial connection between the module's TX pin and your host device's RX pin.
- Verify that the baud rate and protocol settings on your host device match the module's configuration (default 115200bps, NMEA/UBX).
- Posicionament incorrecte:
- Ensure the module is mounted securely and not moving excessively.
- Check for any nearby metallic objects or structures that might be reflecting or blocking satellite signals.
- Confirm the module has acquired a sufficient number of satellites (indicated by the PPS LED flashing).
8. Garantia i Suport
For warranty information and technical support, please refer to the official Beitian website or contact your retailer. Keep your purchase receipt as proof of purchase. Specific warranty terms and conditions may vary by region and retailer.
Per a més ajuda, podeu visitar el Beitian Store on Amazon.