PIXHAWK 2.4.8 autopilot is a general-purpose flight controller based on autopilot mega or APM. it is an open-source project from 3DR. The flight controller combines the functionality of the PX4MU and PX4IO and strong input control of the 32-bit processor. 

This flight controller features with currently most advanced processor technology from STMelectronics, sensor technology from Bosch, InvenSense, and a NuttX real-time operating system. Combining all the features, it provides incredible performance, flexibility, and reliability to control any autonomous vehicle, drone, or quadcopter. The device has 2 external SPI buses and six associated chip select lines, which allows other sensors to the interface. Total it has 4 buses, two for external applications, and 2 grouped with serial ports with GPS or compass module. 

Processor

• Main on-board processor: STM32F427 ( 32-bit ARM Cortex M4, with hardware floating-point processing unit)
• Main frequency: 256K, 168MHZ RAM
• 32-bit STM32F103 backup coprocessor

Sensor

• L3GD20 3 axis digital 16-bit gyroscope
• LSM303D 3 axis  14 bit accelerometer /magnetometer
• MPU6000 6 axis accelerometer / magnetometer
• MS5611 high precision barometer
•  

Interface

• 5* UART, 1*compatible high voltage, 2*hardware flow control
• 2*CAN
• Spektrum DSM/DSM2/DSM-X satellite receiver compatible input
• Futaba SBUS compatible input and output
• PPM signal input
• RSSI (PWM or voltage) input
• I2C
• SPI
• 3.3 and 6.6VADC input
• External USB MICRO interface

Features

• Advanced 32 bit CortexM4 ARM high-performance processor, can run RTOS NuttX real-time operating the system
• Integrated backup power supply and failure backup controller, the main controller can be safely switched to the backup control
• Provide redundant power input and fault transfer function
• 14* PWM/ actuator output
• Bus interface (UART, I2C, SPI, CAN);
• Provide automatic and manual mode;
• Color LED lamp;
• Multi-tone buzzer interface;
• Micro SD to record flight data;

Package included

• 1 x 2.4.8 Pixhawk main control  
• 1 x Safety switch  
• 1 x Flight control shell
• 1 x Buzzer
• 1 x 6pin to 6pin line  
• 1 x 4Pin to  4Pin line
• 1 x 3pin DuPont line