# Holybro Pixhawk 4 Mini (Discontinued) :::warning PX4 does not manufacture this (or any) autopilot. Contact the [manufacturer](https://holybro.com/) for hardware support or compliance issues. ::: The _Pixhawk® 4 Mini_ autopilot is designed for engineers and hobbyists who are looking to tap into the power of _Pixhawk 4_ but are working with smaller drones. _Pixhawk 4 Mini_ takes the FMU processor and memory resources from the _Pixhawk 4_ while eliminating interfaces that are normally unused. This allows the _Pixhawk 4 Mini_ to be small enough to fit in a 250mm racer drone. _Pixhawk 4 Mini_ was designed and developed in collaboration with Holybro® and Auterion®. It is based on the [Pixhawk](https://pixhawk.org/) **FMUv5** design standard and is optimized to run PX4 flight control software. ![Pixhawk4 mini](../../assets/flight_controller/pixhawk4mini/pixhawk4mini_iso_1.png) :::tip This autopilot is [supported](../flight_controller/autopilot_pixhawk_standard.md) by the PX4 maintenance and test teams. ::: ## 요약 - 메인 FMU 프로세서: STM32F765 - 32 비트 Arm® Cortex®-M7, 216MHz, 2MB 메모리, 512KB RAM - 내장 센서 : - 가속도/자이로: ICM-20689 - Accel/Gyro: BMI055 or ICM20602 - 자력계 : IST8310 - 기압계: MS5611 - GPS: u-blox Neo-M8N GPS/GLONASS 수신기; 통합 자력계 IST8310 - 인터페이스: - 8 PWM 출력 - FMU의 전용 PWM / 캡처 입력 4 개 - CPPM 전용 RC 입력 - 아날로그/PWM RSSI 입력이있는 Spektrum/DSM 및 S.Bus 전용 RC 입력 - 범용 시리얼 포트 3개 - I2C 포트 2개 - SPI 버스 3개 - CAN ESC용 CANBus 1개 - 배터리 전압/전류에 대한 아날로그 입력 - 2개의 추가 아날로그 입력 - 전원시스템 - 파워 브릭 입력 : 4.75 ~ 5.5V - USB 전원 입력: 4.75~5.25V - 서보 레일 입력: 0~24V - 최대 전류 감지: 120A - 중량과 크기 - 중량: 37.2g - 크기: 38x55x15.5mm - 기타 특성: - 작동 온도: -40 ~ 85°c Additional information can be found in the [_Pixhawk 4 Mini_ Technical Data Sheet](https://github.com/PX4/PX4-user_guide/raw/main/assets/flight_controller/pixhawk4mini/pixhawk4mini_technical_data_sheet.pdf). ## 구매처 Order from [Holybro](https://holybro.com/collections/autopilot-flight-controllers/products/pixhawk4-mini). ## 인터페이스 ![Pixhawk 4 Mini interfaces](../../assets/flight_controller/pixhawk4mini/pixhawk4mini_interfaces.png) :::warning The **RC IN** and **PPM** ports are for RC receivers only. 이 포트들에는 전원이 공급됩니다. 서보를 전원공급장치나 배터리(또는 연결된 수신기)에 절대 연결하지 마십시오. ::: ## 핀배열 Download _Pixhawk 4 Mini_ pinouts from [here](https://github.com/PX4/PX4-user_guide/raw/main/assets/flight_controller/pixhawk4mini/pixhawk4mini_pinouts.pdf). ## 크기 ![Pixhawk 4 Mini Dimensions](../../assets/flight_controller/pixhawk4mini/pixhawk4mini_dimensions.png) ## 정격 전압 _Pixhawk 4 Mini_ can have power supply redundancy — if two power sources are supplied. The power rails are: **POWER** and **USB**. :::info The output power rail of **MAIN OUT** does not power the flight controller board (and is not powered by it). You must [supply power](../assembly/quick_start_pixhawk4_mini.md#power) to one of **POWER** or **USB** or the board will be unpowered. ::: **Normal Operation Maximum Ratings** 이러한 조건에서 전원은 아래의 순서대로 시스템에 전원을 공급하여야합니다. 1. **POWER** (4.75V to 5.5V) 2. **USB** input (4.75V to 5.25V) **Absolute Maximum Ratings** 이러한 조건에서 시스템은 그대로 유지됩니다. 1. **POWER** input (0V to 6V undamaged) 2. **USB** input (0V to 6V undamaged) 3. Servo input: VDD_SERVO pin of **MAIN OUT** (0V to 24V undamaged) ## 조립 및 설정 The [_Pixhawk 4 Mini_ Wiring Quick Start](../assembly/quick_start_pixhawk4_mini.md) provides instructions on how to assemble required/important peripherals including GPS, Power Management Board, etc. ## 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-v5_default ``` ## 디버그 포트 The [PX4 System Console](../debug/system_console.md) and [SWD interface](../debug/swd_debug.md) run on the **FMU Debug** port. In order to access these ports, the user must remove the _Pixhawk 4 Mini_ casing. ![Pixhawk 4 Mini FMU Debug](../../assets/flight_controller/pixhawk4mini/pixhawk4mini_fmu_debug.png) The port has a standard serial pinout and can be connected to a standard FTDI cable (3.3V, but it's 5V tolerant) or a [Dronecode probe](https://kb.zubax.com/display/MAINKB/Dronecode+Probe+documentation). The pinout uses the standard [Pixhawk debug connector](https://github.com/pixhawk/Pixhawk-Standards/blob/master/DS-009%20Pixhawk%20Connector%20Standard.pdf) pinout. Please refer to the [wiring](../debug/system_console.md) page for details of how to wire up this port. ## 시리얼 포트 매핑 | UART | 장치 | QGC Parameter Description | Port Label on FC | | :----: | :--------: | :-----------------------: | :-----------------------------------: | | UART1 | /dev/ttyS0 | GPS1 | GPS Module | | USART2 | /dev/ttyS1 | TELEM1 | TELEM1 | | USART3 | /dev/ttyS2 | TELEM2 | 해당없음 | | UART4 | /dev/ttyS3 | TELEM/SERIAL4 | UART/l2C B | | USART6 | /dev/ttyS4 | 해당없음 | RC IN | | UART7 | /dev/ttyS5 | 해당없음 | Debug | | UART8 | /dev/ttyS6 | 해당없음 | 연결되지 않음 (PX4IO 없음) | ## 주변 장치 - [Digital Airspeed Sensor](https://holybro.com/products/digital-air-speed-sensor) - [Telemetry Radio Modules](../telemetry/index.md) - [Rangefinders/Distance sensors](../sensor/rangefinders.md) ## 지원 플랫폼 Motors and servos are connected to the **MAIN OUT** ports in the order specified for your vehicle in the [Airframe Reference](../airframes/airframe_reference.md). 이 참고사항은 모든 지원되는 기체 프레임의 출력 포트의 모터/서보 연결 리스트입니다. 프레임이 참고사항에 기재되어 있지 않다면, 올바른 유형의 "일반" 프레임을 사용하십시오. :::warning _Pixhawk 4 Mini_ does not have AUX ports. 이 보드는 8 개 이상의 포트가 필요하거나, 모터 또는 제어 표면에 AUX 포트를 사용하는 프레임에 사용할 수 없습니다. 비필수 주변 장치에 AUX를 사용하는 기체에 사용할 수 있습니다(예 : "RC AUX1 채널의 피드 스루"). ::: ## 추가 정보 - [_Pixhawk 4 Mini_ Technical Data Sheet](https://github.com/PX4/PX4-user_guide/raw/main/assets/flight_controller/pixhawk4mini/pixhawk4mini_technical_data_sheet.pdf) - [FMUv5 reference design pinout](https://docs.google.com/spreadsheets/d/1-n0__BYDedQrc_2NHqBenG1DNepAgnHpSGglke-QQwY/edit#gid=912976165).