# Pixfalcon 비행 콘트롤러 (단종됨)

<Badge type="info" text="Discontinued" px4_current="v1.15" year="2024"/>

:::warning
This flight controller has been [discontinued](../flight_controller/autopilot_experimental.md) and is no longer commercially available.
:::

:::warning
PX4 does not manufacture this (or any) autopilot.
Contact the [manufacturer](https://holybro.com/) for hardware support or compliance issues.
:::

The Pixfalcon autopilot (designed by [Holybro<sup>&reg;</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.

![Pixfalcon hero image](../../assets/hardware/hardware-pixfalcon.png)

## 요약

- Main System-on-Chip: [STM32F427](https://www.st.com/en/microcontrollers-microprocessors/stm32f427-437.html)
  - CPU : 단정밀도 FPU의 180MHz ARM<sup>&reg;</sup> Cortexex<sup>&reg;</sup>  M4
  - RAM : 256KB SRAM (L1)
- 페일세이프 시스템 온칩 : STM32F100
  - CPU: 24 MHz ARM Cortex M3
  - RAM : 8KB SRAM
- GPS: u-blox<sup>&reg;</sup> M8 (번들)

### 연결성

- I2C 1개
- UART 2개(하나는 원격 측정/OSD 용, 흐름 제어 없음)
- 수동 오버라이드 기능이 있는 PWM 8개
- S.BUS / PPM 입력

## 구매처:

No longer available.

Optional hardware:

- Optical flow: PX4 Flow unit from manufacturer [Holybro](https://holybro.com/products/px4flow)
- Digital Airspeed sensor from manufacturer [Holybro](https://holybro.com/products/digital-air-speed-sensor-ms4525do)
- 텔레메트리가 통합 화면 디스플레이
  - Micro HKPilot Telemetry Radio Module with On Screen Display (OSD) unit - 433MHz. (Discontinued)
- 순수 텔레메트리 옵션:
  - [SIK Radios](../telemetry/sik_radio.md)

## 펌웨어 빌드

:::tip
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](../dev_setup/building_px4.md) for this target:

```
make px4_fmu-v2_default
```

## 디버그 포트

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).

개발자는 SWD용 보드 테스트 패드와 STM32F4 (IC) TX와 RX에 와이어를 납땜하여 콘솔을 획득할 수 있습니다.

## 시리얼 포트 매핑

| UART   | 장치         | 포트                                |
| ------ | ---------- | --------------------------------- |
| UART1  | /dev/ttyS0 | IO 디버그                            |
| USART2 | /dev/ttyS1 | TELEM1 (흐름 제어) |
| UART4  | /dev/ttyS2 | GPS                               |

<!-- Note: Got ports using https://github.com/PX4/PX4-user_guide/pull/672#issuecomment-598198434 -->