Pixhawk PX4 Flight Controller
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Pixhawk PX4 Flight Controller
Pixhawk® 4 features advanced processor technology from STMicroelectronics®, sensor technology from Bosch®, InvenSense®, and a NuttX real-time operating system, delivering incredible performance, flexibility, and reliability for controlling any autonomous vehicle.
The Pixhawk 4’s microcontroller has a 2MB flash memory and 512KB RAM. With the increased power and RAM resources, developers can be more productive and efficient with their development work. More complex algorithms and models can be implemented on the autopilot.
High-performance, low-noise IMUs on board are designed for stabilization applications. Data-ready signals from all sensors are routed to separate interrupt and timer capture pins on the autopilot, permitting precise time-stamping of sensor data. Newly designed vibration isolations enables more accurate readings, allowing vehicles to reach better overall flight performances.
The two external SPI buses and six associated chip select lines allow to add additional sensors and SPI-interfaced payload. There are total of four I2C buses, two dedicated for external use and two grouped with serial ports for GPS/Compass modules.
Technical Specifications
Main FMU Processor
STM32F765 - 32 Bit Arm ® Cortex® -M7, 216MHz, 2MB memory, 512KB RAM
IO Processor
STM32F103 - 32 Bit Arm® Cortex®-M3, 72MHz, 64KB SRAM (Current)
STM32F100 - 32 Bit Arm ® Cortex® -M3, 24MHz, 8KB SRAM (Discontinued)
On-board sensors
Accel/Gyro: ICM-20689
Accel/Gyro: BMI055/ICM-20602
Mag: IST8310
Barometer: MS5611
Electrical Data
Power module output: 4.9~5.5V
Max input voltage: 6V
Max current sensing: 120A
USB Power Input: 4.75~5.25V
Servo Rail Input: 0~36V
Mechanical Data
Dimensions: 44x84x12mm
Weight(plastic case): 33.3g
Weight(aluminum case): 49g
Effective Date: March 27, 2025
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