Readytosky GPS BN-220
Readytosky GPS BN-220
Readytosky GPS BN-220
The Readytosky GPS BN-220 is a compact, high-precision GPS module designed for drone navigation, robotics, and autonomous systems requiring accurate real-time positioning data. Professional UAV pilots, roboticists, and embedded systems engineers rely on this module to achieve centimeter-level accuracy and reliable satellite lock in demanding aerial and ground-based applications. This product solves critical positioning challenges in GPS-denied environments and provides stable altitude hold, autonomous waypoint navigation, and real-time telemetry data for flight control systems.
Product Overview
The BN-220 is a dual-frequency GNSS receiver that integrates GPS, GLONASS, Galileo, and BeiDou satellite systems to deliver multi-constellation positioning accuracy. The module operates on a 5V power supply and communicates via UART serial interface at 38400 baud rate, making it compatible with popular flight controllers like Pixhawk, APM, and custom Arduino-based systems. Its compact form factor and lightweight design make it ideal for weight-sensitive applications such as quadcopters, fixed-wing UAVs, and ground robots where payload capacity is critical.
The GPS BN-220 features an active antenna with integrated LNA (Low Noise Amplifier) that enhances signal reception in urban canyons and challenging RF environments. With a cold start acquisition time of under 45 seconds and hot start capability in just 5 seconds, this module provides rapid satellite lock for time-critical missions. The module outputs standard NMEA 0183 sentences including GGA, RMC, and GSA frames, enabling seamless integration with existing autopilot systems and custom navigation algorithms.
Key Specifications
| Specification | Details |
| Product Type | Dual-Frequency GNSS GPS Module |
| Brand | Readytosky |
| Origin | Original/Authentic |
| Warranty | 7 days on manufacturing defects |
| Shipping | 1-5 days from Bengaluru |
| Delivery | 7-8 days across India |
| Support | 24/7 via Email and WhatsApp |
| Satellite Systems | GPS, GLONASS, Galileo, BeiDou (Multi-constellation) |
| Frequency | Dual-frequency (L1 and L5) |
| Positioning Accuracy | 2.5 meters (horizontal), 5 meters (vertical) |
| Communication Interface | UART Serial (38400 baud) |
| Power Supply | 5V DC, 150mA typical |
| Cold Start Time | 45 seconds maximum |
| Hot Start Time | 5 seconds |
| Update Rate | 10Hz standard (configurable up to 25Hz) |
| Antenna Type | Active patch antenna with LNA |
| Operating Temperature | -10 to 60 degrees Celsius |
Key Features
- Multi-constellation GNSS support combining GPS, GLONASS, Galileo, and BeiDou for enhanced satellite availability and improved accuracy in urban and obstructed environments
- Dual-frequency L1/L5 reception enabling ionospheric error correction and superior positioning precision for professional-grade applications
- Active antenna with integrated LNA providing 27dB gain amplification for robust signal acquisition in weak signal conditions
- UART serial interface outputting standard NMEA 0183 sentences for plug-and-play compatibility with Pixhawk, APM, and custom flight controller boards
- Rapid satellite acquisition with 45-second cold start and 5-second hot start for mission-critical time-sensitive operations
- Configurable update rates from 1Hz to 25Hz allowing optimization for power consumption versus real-time responsiveness requirements
Applications and Use Cases
- Professional UAV and drone applications including autonomous flight, GPS-guided waypoint navigation, return-to-home functionality, and aerial surveying with centimeter-level accuracy
- Robotics and autonomous ground vehicles requiring real-time position feedback for SLAM algorithms, path planning, and obstacle avoidance systems
- Precision agriculture and mapping where GPS coordinates are logged for crop monitoring, field boundary mapping, and yield analysis
- Marine and maritime navigation systems for autonomous boats, underwater drones, and surface vessel positioning with multi-frequency ionospheric correction
- Emergency response and search-and-rescue operations where reliable GPS positioning ensures accurate location tracking and mission coordination
How to Use
To integrate the Readytosky GPS BN-220 with your flight controller or embedded system, connect the module's power pins (5V and GND) to your system's regulated 5V supply, ensuring current capacity of at least 200mA during satellite acquisition. Connect the TX pin to your flight controller's RX pin and RX pin to the controller's TX pin for bidirectional UART communication at 38400 baud. Mount the active antenna vertically on your UAV or robot platform with clear sky visibility above, maintaining at least 5cm clearance from other RF components and carbon fiber structures that may cause signal attenuation.
Configure your autopilot firmware (ArduPilot, PX4, or custom code) to recognize the GPS module on the designated serial port and validate NMEA sentence parsing. Verify successful satellite lock by monitoring the HDOP (Horizontal Dilution of Precision) value dropping below 2.5 and confirming fix type transitions from 0 (no fix) to 2 (2D fix) to 3 (3D fix). Allow 2-3 minutes for initial cold start acquisition on first power-up, then perform a test flight at low altitude to verify position stability before executing autonomous missions.
Frequently Asked Questions
What is the difference between cold start and hot start acquisition times?
Cold start occurs when the GPS module powers on without any prior satellite ephemeris data, requiring it to download current orbital information from satellites, taking up to 45 seconds. Hot start uses previously stored ephemeris data in the module's memory, enabling rapid re-acquisition in just 5 seconds after brief power interruptions. For first-time setup or after extended storage, allow cold start time; for field operations, hot start provides quick recovery.
Can the BN-220 work indoors or in GPS-denied environments?
The BN-220 requires clear line-of-sight to satellites and cannot provide positioning indoors or in dense urban canyons without external aids. However, its multi-constellation support (GPS, GLONASS, Galileo, BeiDou) significantly improves acquisition in partially obstructed environments compared to single-system receivers. For indoor navigation, integrate the GPS module with IMU-based dead reckoning, visual odometry, or external positioning systems like UWB.
What baud rate and NMEA sentences does the BN-220 output?
The module operates at 38400 baud rate and outputs standard NMEA 0183 sentences including GGA (position and time), RMC (recommended minimum), GSA (DOP and active satellites), and GSV (satellite visibility). Most flight controllers auto-detect these sentences; verify your autopilot firmware supports these standard NMEA formats for proper integration.
Is the antenna removable or fixed to the module?
The BN-220 features an integrated active patch antenna with LNA that is factory-tuned for optimal performance. While the antenna connector may be accessible on some variants, we recommend keeping the original antenna for best results. Aftermarket antennas may degrade performance; contact support if antenna replacement is necessary.
What power consumption should I budget for the GPS module?
The BN-220 draws approximately 150mA during normal operation and up to 200mA during active satellite acquisition. For battery-powered systems, allocate sufficient power capacity; for example, a 5000mAh battery with 150mA GPS draw provides approximately 33 hours of continuous operation. Implement power management to disable the GPS module during non-critical phases to extend flight time.
When will I receive my order?
Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.
What is your return and warranty policy?
We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.
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- Technical Support: 24/7 expert guidance via email and WhatsApp
- Returns: 7-day return policy on manufacturing defects only
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