Pixfalcon Flight Controller

The Pixfalcon autopilot (designed by Holybro^®) is binary-compatible (FMUv2) derivative of the Pixhawk 1 design that has been optimized for space-constrained applications such as FPV racers. It has less IO to allow for the reduction in size.

Quick Summary

• Main System-on-Chip: STM32F427
  • CPU: 180 MHz ARM^® Cortex^® M4 with single-precision FPU
  • RAM: 256 KB SRAM (L1)
• Failsafe System-on-Chip: STM32F100
  • CPU: 24 MHz ARM Cortex M3
  • RAM: 8 KB SRAM
• GPS: U-Blox^® M8 (bundled)

Connectivity

• 1x I2C
• 2x UART (one for Telemetry / OSD, no flow control)
• 8x PWM with manual override
• S.BUS / PPM input

Availability:

From distributor Hobbyking^®

Optional hardware:

• Optical flow: PX4 Flow unit from manufacturer Holybro
• Digital Airspeed sensor from manufacturer Holybro or distributor Hobbyking
• On screen display with integrated Telemetry:
  • Hobbyking OSD + EU Telemetry (433 MHz)
• Pure Telemetry options:
  • Hobbyking Wifi Telemetry
  • HKPilot Micro Telemetry EU version (433 MHz)
  • HKPilot Micro Telemetry EU version (915 MHz)

Building Firmware

Most users will not need to build this firmware! It is pre-built and automatically installed by QGroundControl when appropriate hardware is connected.

To build PX4 for this target:

make px4_fmu-v2_default

Debug Port

This board does not have a debug port (i.e it does not have a port for accessing the System Console or SWD (JTAG) debug interface.

Developers will need to solder wires to the board test pads for SWD, and to the STM32F4 (IC) TX and RX to get a console.

Key Links

• User Manual