Beitian BE-450i BK-450 GNSS GPS Compass Module (IST8310, M10050) for UAV Flight Controllers
Beitian BE-450i BK-450 GNSS GPS Compass Module (IST8310, M10050) for UAV Flight Controllers
Beitian
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Overview
Beitian BE-450i / BK-450 is a GNSS GPS + compass module for UAV flight control and other positioning projects. It integrates a GNSS receiver (chip: M10050) and a built-in electronic compass IC (IST8310), and provides TTL-level UART data plus I2C compass signals through a 1.25mm 6-pin lockable connector.
Beitian GNSS modules, antennas and receivers are widely used in UAV & FPV drones, flight control, aerial surveying and mapping, precision agriculture, geodetic survey, deformation monitoring, marine navigation, automotive positioning, industrial IoT, timing synchronization, robotics, Arduino DIY and other high-precision positioning fields.
Models: BE-450i, BK-450i, BF-450i, BH-450i. (Note: BE-450 is wired the same as BK-450.)
Key Features
- GNSS receiver type: GPS L1 C/A, QZSS L1 C/A/S, BDS B1I/B1C, Galileo E1B/C, SBAS L1 C/A (WAAS, EGNOS, MSAS, GAGAN)
- Default position system: GPS, BDS, GALILEO
- Augmentation system: SBAS, QZSS
- Protocols: NMEA, UBX; NMEA messages: RMC, VTG, GGA, GSA, GSV, GLL
- Built-in compass: electronic compass IC IST8310
- Indicator LEDs: TX LED (blue) and PPS LED (red)
- Customization (as stated): can be debugged according to requirements; various modules can be customized according to materials; various modules can be customized according to concept
Specifications
| Chip | M10050 |
| Receiver type | GPS L1 C/A, QZSS L1 C/A/S, BDS B1I/B1C, Galileo E1B/C, SBAS L1 C/A: WAAS, EGNOS, MSAS, GAGAN |
| Default position system | GPS, BDS, GALILEO |
| Augmentation system | SBAS, QZSS |
| Channel | N/A |
| Sensitivity (Tracking & Navigation) | -166 dBm |
| Sensitivity (Reacquisition) | -160 dBm |
| Sensitivity (Cold start) | -148 dBm |
| Sensitivity (Hot start) | -160 dBm |
| Accuracy (Horizontal position) | 2.0 m CEP |
| Accuracy (Velocity) | 0.05 m/s |
| Accuracy (Dynamic heading) | 0.3 deg |
| Accuracy (Time pulse) | RMS 30 ns; 99% 60 ns |
| Acquisition (Cold start) | 27 s |
| Acquisition (Hot start) | 1 s |
| Acquisition (Aided start) | 1 s |
| Baud rate | 4800 bps - 921600 bps (default 115200 bps) |
| Level | TTL level |
| Protocol | NMEA, UBX |
| NMEA messages | RMC, VTG, GGA, GSA, GSV, GLL |
| Update rate | 0.25 Hz - 18 Hz (default 1 Hz) |
| FLASH | With FLASH, the configuration can be changed, and the power will not be lost |
| Time pulse signal frequency | Configurable from 0.25 Hz to 10 MHz; default period 1 s; high level lasts for 100 ms |
| Operational limits (Altitude) | 80,000 m |
| Operational limits (Velocity) | 500 m/s |
| Operational limits (Dynamics) | < 4 g |
| Voltage | DC 3.6 V - 5.5 V (typical: 5.0 V) |
| Current | 30 mA / 5.0 V |
| Dimensions | Dia 56 * 9.8 mm |
| Weight | 31 g |
| Connector | 1.25 / 6P lockable, horizontal SMD socket |
| Operating temperature | -40 C to +85 C |
| Storage temperature | -40 C to +105 C |
| LED | TX LED: blue (data output, TX LED flashing). PPS LED: red (PPS LED not bright when GPS not fixed; flashing when fixed). |
| Compass | Built-in compass (electronic compass IC IST8310) |
| Mechanical drawing details | Dia 56.00 +/- 0.2; Dia 50.00 +/- 0.1; 4 x Dia 3.00; Dia 45.5; height reference: 4.00, 2.8, 0.50 MAX, 8.3 +/- 0.3, 9.8; inner square reference: 36.2 x 36.2 |
| Antenna marking | BDS L1, GLS G1; 1561 MHz - 1602 MHz |
Pin Definition (6-Pin)
| PIN | Name | I/O | Description | Characteristics |
|---|---|---|---|---|
| 1 | SDA | O | Serial data - I2C bus master/slave data | Compass data pin |
| 2 | SCL | I | Serial clock - I2C bus master/slave clock | Compass clock pin |
| 3 | TX | O | UART communication interface, TTL level | GPS data output pin |
| 4 | RX | I | UART communication interface, TTL level | GPS data input pin |
| 5 | VCC | I | Main power supply, DC input | DC 3.6 V - 5.5 V; recommended 5.0 V |
| 6 | GND | G | Ground | Ground |
Wiring Notes (as shown in diagrams)
- GPS module to USB-to-TTL cable: GND-GND, TX-TX, RX-RX, VCC-VCC
- GPS module to microcontroller: 1PPS, GND, TX, RX, VCC, BOOT pins are shown in the wiring diagram (connect according to the controller requirements)
Applications
- Vehicle positioning and navigation
- Timing
- Wearables
- IoT positioning devices
- UAV, flight control field
What's Included
- GNSS module (Module one)
- Adapter cable
For integration questions or customization requests, contact https://rcdrone.top/ or email support@rcdrone.top.
Details
The Beitian BE-450i / BK-450 combines GNSS positioning with a built-in compass for drone and project use.
Performance, pinout, and compact round-module layout are summarized for easy integration.
The module uses a 6-pin interface for UART and compass signals, with TX and PPS status LEDs.
Front and rear layout diagrams help with mounting, wiring, and orientation during installation.
A simple wiring guide shows how to connect power, TX/RX, and 1PPS signals.
The module is positioned for positioning tasks in mobility, agriculture, and UAV applications.
BE-450 and BK-450 share the same wiring, making the adapter cable and module pairing straightforward.
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