Holybro Original Pixhawk PX4 Flight Controller (without GPS)
Holybro Original Pixhawk PX4 Flight Controller (without GPS)
Holybro Original Pixhawk PX4 Flight Controller (without GPS)
The Holybro Original Pixhawk PX4 is an industrial-grade autopilot flight controller designed for autonomous unmanned aerial vehicles, multicopters, fixed-wing aircraft, and VTOL systems. Professional drone operators, roboticists, and aerospace engineers rely on this controller for mission-critical applications requiring robust stabilization, advanced sensor fusion, and reliable autonomous flight capabilities. It solves the challenge of integrating multiple sensor inputs with complex flight algorithms while maintaining real-time control responsiveness and failsafe redundancy in demanding aerial operations.
Product Overview
The Pixhawk PX4 flight controller operates on a modular autopilot architecture that processes inertial measurement data from accelerometers, gyroscopes, and barometric sensors through a high-performance 32-bit ARM Cortex-M4 processor running the PX4 open-source firmware. The controller uses a triple-redundancy sensor design with automatic sensor failover capabilities, ensuring continuous operation even if primary sensors experience drift or failure. Its sophisticated extended Kalman filter continuously fuses sensor data to estimate aircraft attitude, altitude, and velocity with exceptional accuracy, enabling stable flight in GPS-denied environments and providing precise control authority for autonomous missions.
What distinguishes the Pixhawk PX4 is its comprehensive I/O connectivity supporting up to 14 PWM outputs for motor and servo control, multiple serial communication ports for telemetry and payload integration, and CAN bus support for advanced peripheral devices. The controller features integrated safety mechanisms including voltage monitoring, current limiting, and configurable failsafe actions such as return-to-launch or controlled descent. Its open-source PX4 firmware ecosystem provides access to advanced flight modes including stabilized flight, altitude hold, position hold with external positioning systems, and fully autonomous waypoint navigation when paired with compatible GPS modules or alternative positioning solutions.
Key Specifications
| Specification | Details |
| Product Type | Autopilot Flight Controller |
| Brand | Holybro |
| 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 |
| Processor | STM32F427 32-bit ARM Cortex-M4 running at 168 MHz |
| Flash Memory | 256 KB RAM, 2 MB Flash Storage |
| Inertial Sensors | Triple-redundant IMU with accelerometers and gyroscopes |
| Barometric Sensor | Integrated barometer for altitude estimation |
| PWM Outputs | 14 independent PWM channels for motors and servos |
| Communication Ports | 3 serial ports, CAN bus, I2C, SPI interfaces |
| Operating Voltage | 4.75V to 5.5V DC |
| Power Consumption | Approximately 100 mA at 5V |
| Dimensions | 36 x 50 x 15.5 mm |
| Weight | Approximately 38 grams |
| Firmware | PX4 open-source autopilot software |
| GPS Module | Not included - external GPS module required for position-based flight modes |
Key Features
- Triple-redundant IMU architecture with automatic sensor failover ensures continuous operation and eliminates single points of failure in critical flight control systems
- 14 independent PWM outputs provide flexible motor and servo control for multicopters, fixed-wing aircraft, VTOL platforms, and custom aerial configurations
- Advanced sensor fusion using extended Kalman filter algorithms delivers precise attitude estimation and altitude hold capability without external positioning systems
- Open-source PX4 firmware enables full customization, access to source code, and integration with third-party sensors and payloads through standardized interfaces
- Integrated safety monitoring with voltage sensing, current limiting, and configurable failsafe actions protects against power loss and communication failures
- Multi-protocol communication support including MAVLink telemetry, CAN bus, and serial interfaces enables seamless integration with ground control stations and external systems
Applications and Use Cases
- Autonomous quadcopter and multirotor platforms requiring stabilized flight control, altitude hold, and advanced flight modes in GPS-denied environments such as indoor facilities and urban canyons
- Fixed-wing aircraft autopilot systems for surveillance, mapping, and agricultural monitoring missions with autonomous waypoint navigation when paired with external positioning modules
- VTOL and hybrid aircraft development where coordinated control of multiple motor types and servo actuators demands sophisticated flight control algorithms and real-time responsiveness
- Research and educational robotics projects requiring open-source firmware access, extensive sensor integration capabilities, and community support for custom algorithm development
- Commercial drone payload integration for thermal imaging, LiDAR scanning, and precision agriculture applications where reliable autopilot performance is mission-critical
- Marine robotics and autonomous surface vehicle applications using the controller for stabilization and navigation with appropriate sensor adaptations
How to Use
Begin by mounting the Pixhawk PX4 controller on your aircraft frame using vibration-dampening materials to isolate the IMU sensors from motor vibration and structural resonance. Connect the power supply to the dedicated power input connector, ensuring voltage remains within the 4.75V to 5.5V specification using a properly regulated power distribution board. Attach motor ESCs and servo controllers to the appropriate PWM output channels, configure your telemetry module to a serial port, and physically orient the controller with its arrow marking pointing toward the aircraft nose for proper coordinate frame alignment.
Install the PX4 firmware onto the controller using QGroundControl or Mission Planner software on your ground station computer. Perform mandatory sensor calibration procedures including accelerometer and compass calibration to establish accurate baseline measurements. Configure flight parameters such as motor mixing, PID control gains, and failsafe behaviors through the ground control station interface. Test all control surfaces and motor responses in manual flight mode before enabling autonomous flight modes. For position-based autonomous missions, integrate an external GPS module or alternative positioning system such as optical flow or RTK-GPS, then configure waypoint missions through your ground control station software.
Frequently Asked Questions
Why is GPS not included and what are my positioning alternatives?
The Pixhawk PX4 without GPS version is designed for applications requiring stabilized flight without autonomous position-based navigation, reducing cost and weight. You can add external GPS modules via serial connection for waypoint navigation, use optical flow sensors for indoor position holding, integrate RTK-GPS for centimeter-level accuracy in surveying applications, or employ external positioning systems like motion capture for research environments. The controller's architecture supports all these options through its flexible communication interfaces.
What is the difference between Pixhawk 1 and Pixhawk 4, and which should I choose?
The Pixhawk PX4 (Pixhawk 1) features the STM32F427 processor and is ideal for established platforms with mature firmware support and extensive community documentation. Pixhawk 4 offers improved processing power and additional sensors but requires newer firmware versions. Choose the PX4 if you prioritize compatibility with existing projects, community support, and proven reliability in production systems. Choose Pixhawk 4 for new projects requiring higher computational performance or advanced sensor integration capabilities.
Can I use this controller for fixed-wing aircraft or only multicopters?
The Pixhawk PX4 supports multiple airframe types including quadcopters, hexacopters, fixed-wing aircraft, VTOL platforms, and custom configurations. The firmware includes specialized flight control algorithms and mixing matrices for each airframe type. Configure your airframe class during initial setup in QGroundControl, and the controller automatically applies appropriate motor mixing and control laws. The 14 PWM outputs provide sufficient channels for complex aircraft with multiple control surfaces and motor configurations.
What telemetry modules are compatible with the Pixhawk PX4?
The controller supports any MAVLink-compatible telemetry module connected via its serial ports. Common options include the 3DR radio modules, SiK telemetry radios, and modern 4G/LTE modules. Connect the telemetry module to TELEM1 or TELEM2 serial ports and configure the appropriate baud rate in firmware settings. This enables real-time flight monitoring, parameter adjustment, and mission upload from your ground control station.
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.
Why Buy from The Tech Depot
- Genuine Products: Sourced directly from authorized distributors with authentication
- Expert Team: Our technical team validates every product before listing
- Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
- Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
- Payment Options: COD, UPI, credit/debit cards, net banking, EMI available
- Technical Support: 24/7 expert guidance via email and WhatsApp
- Returns: 7-day return policy on manufacturing defects only
Buy Holybro Original Pixhawk PX4 Flight Controller (without GPS) Online in India
Purchase the Holybro Original Pixhawk PX4 Flight Controller (without GPS) online at The Tech Depot, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on Holybro Original Pixhawk PX4 Flight Controller (without GPS) with fast shipping and expert support.
Our team in Bengaluru is available 24/7 to support your journey from product selection to project completion.