PX4-Autopilot/docs/ko/tutorials/linux_sbus.md
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Signed-off-by: Ramon Roche <mrpollo@gmail.com>
Co-authored-by: Ramon Roche <mrpollo@gmail.com>
2025-03-13 16:08:27 +11:00

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# Connecting an RC Receiver to a PX4 Linux-based Autopilot
This topic shows how to setup a PX4 Linux-based autopilot to connect and use a [supported RC receiver](../getting_started/rc_transmitter_receiver.md) on any serial port.
S.Bus 이외의 RC 유형의 경우 수신기는 직렬 포트에 직접 연결하거나 USB-TTY 직렬 케이블(예: PL2302 USB-직렬 TTL 변환기)을 통하여 USB에 연결할 수 있습니다.
:::info
For an S.Bus receiver (or encoder - e.g. from Futaba, RadioLink, etc.) you will usually need to connect the receiver and device via a [signal inverter circuit](#signal_inverter_circuit), but otherwise the setup is the same.
:::
Then [Start the PX4 RC Driver](#start_driver) on the device, as shown below.
<a id="start_driver"></a>
## 드라이버 시작
To start the RC driver on a particular UART (e.g. in this case `/dev/ttyS2`):
```sh
rc_input start -d /dev/ttyS2
```
For other driver usage information see: [rc_input](../modules/modules_driver.md#rc-input).
<a id="signal_inverter_circuit"></a>
## 신호 반전 회로(S.Bus 전용)
S.Bus is an _inverted_ UART communication signal.
일부 직렬 포트/비행 컨트롤러는 반전된 UART 신호를 읽을 수 있지만, 대부분은 신호 반전을 복원하기 위하여 수신기와 직렬 포트 사이에 신호 인버터 회로가 필요합니다.
:::tip
This circuit is also required to read S.Bus remote control signals through the serial port or USB-to-TTY serial converter.
:::
이 섹션에서는 적절한 회로를 만드는 방법을 설명합니다.
### 필수 부품
- 1x NPN 트랜지스터 (예: NPN S9014 TO92)
- 1x 10K 저항
- 1x 1K 저항
:::info
Any type/model of transistor can be used because the current drain is very low.
:::
### 회로 구성도/연결
아래에 설명(그리고 회로 구성도)하는 바와 같이 회로 소자를 연결하십시오:
- S.Bus 신호선 &rarr; 1K 저항 &rarr; NPN 트랜지스터 베이스
- NPN 트랜지스터 방출 &rarr; GND
- 3.3VCC &rarr; 10K 저항 &rarr; NPN 트랜지스터 컬렉션 &rarr; USB-to-TTY rxd
- 5.0VCC &rarr; S.Bus VCC
- GND &rarr; S.Bus GND
![Signal inverter circuit diagram](../../assets/sbus/driver_sbus_signal_inverter_circuit_diagram.png)
아래 이미지에서는 빵판에서 연결된 모습을 보여줍니다.
![Signal inverter breadboard](../../assets/sbus/driver_sbus_signal_inverter_breadboard.png)