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 4s 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