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76 lines
2.7 KiB
Markdown
76 lines
2.7 KiB
Markdown
# Pixfalcon Flight Controller (Discontinued)
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<Badge type="info" text="Discontinued" px4_current="v1.15" year="2024"/>
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:::warning
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This flight controller has been [discontinued](../flight_controller/autopilot_experimental.md) and is no longer commercially available.
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:::
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:::warning
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PX4 does not manufacture this (or any) autopilot.
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Contact the [manufacturer](https://holybro.com/) for hardware support or compliance issues.
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:::
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The Pixfalcon autopilot (designed by [Holybro<sup>®</sup>](https://holybro.com/)) is binary-compatible (FMUv2) derivative of the [Pixhawk 1](../flight_controller/pixhawk.md) design that has been optimized for space-constrained applications such as FPV racers. It has less IO to allow for the reduction in size.
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## Quick Summary
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- Main System-on-Chip: [STM32F427](https://www.st.com/en/microcontrollers-microprocessors/stm32f427-437.html)
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- CPU: 180 MHz ARM<sup>®</sup> Cortex<sup>®</sup> M4 with single-precision FPU
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- RAM: 256 KB SRAM (L1)
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- Failsafe System-on-Chip: STM32F100
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- CPU: 24 MHz ARM Cortex M3
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- RAM: 8 KB SRAM
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- GPS: u-blox<sup>®</sup> M8 (bundled)
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### Connectivity
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- 1x I2C
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- 2x UART (one for Telemetry / OSD, no flow control)
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- 8x PWM with manual override
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- S.BUS / PPM input
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## Availability:
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No longer available.
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Optional hardware:
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- Optical flow: PX4 Flow unit from manufacturer [Holybro](https://holybro.com/products/px4flow)
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- Digital Airspeed sensor from manufacturer [Holybro](https://holybro.com/products/digital-air-speed-sensor-ms4525do)
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- On screen display with integrated Telemetry:
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- Micro HKPilot Telemetry Radio Module with On Screen Display (OSD) unit - 433MHz. (Discontinued)
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- Pure Telemetry options:
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- [SIK Radios](../telemetry/sik_radio.md)
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## Building Firmware
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:::tip
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Most users will not need to build this firmware!
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It is pre-built and automatically installed by _QGroundControl_ when appropriate hardware is connected.
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:::
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To [build PX4](../dev_setup/building_px4.md) for this target:
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```
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make px4_fmu-v2_default
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```
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## Debug Port
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This board does not have a debug port (i.e it does not have a port for accessing the [System Console](../debug/system_console.md) or the [SWD interface](../debug/swd_debug.md) (JTAG).
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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.
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## Serial Port Mapping
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| UART | Device | Port |
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| ------ | ---------- | ------------------------ |
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| UART1 | /dev/ttyS0 | IO Debug |
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| USART2 | /dev/ttyS1 | TELEM1 (No flow control) |
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| UART4 | /dev/ttyS2 | GPS |
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<!-- Note: Got ports using https://github.com/PX4/PX4-user_guide/pull/672#issuecomment-598198434 -->
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