Mirrors_Framework/PX4-Autopilot
1
0
Fork 0
mirror of https://github.com/PX4/PX4-Autopilot.git synced 2026-05-27 01:45:55 +08:00
Code Issues Actions 3 Packages Projects Releases Wiki Activity

Move PX4 Guide source into /docs (#24490)

Browse Source 
* Add vitepress tree

* Update existing workflows so they dont trigger on changes in the docs path

* Add nojekyll, package.json, LICENCE etc

* Add crowdin docs upload/download scripts

* Add docs flaw checker workflows

* Used docs prefix for docs workflows

* Crowdin obvious fixes

* ci: docs move to self hosted runner

runs on a beefy server for faster builds

Signed-off-by: Ramon Roche <mrpollo@gmail.com>

* ci: don't run build action for docs or ci changes

Signed-off-by: Ramon Roche <mrpollo@gmail.com>

* ci: update runners

Signed-off-by: Ramon Roche <mrpollo@gmail.com>

* Add docs/en

* Add docs assets and scripts

* Fix up editlinks to point to PX4 sources

* Download just the translations that are supported

* Add translation sources for zh, uk, ko

* Update latest tranlsation and uorb graphs

* update vitepress to latest

---------

Signed-off-by: Ramon Roche <mrpollo@gmail.com>
Co-authored-by: Ramon Roche <mrpollo@gmail.com>
This commit is contained in:
Hamish Willee
2025-03-13 16:08:27 +11:00
committed by GitHub
parent 8e6d2ebe4a
commit 88d623bedb
5176 changed files with 558771 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
docs/en/tutorials/linux_sbus.md
+63
View File
@@ -0,0 +1,63 @@
# 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.
For RC types other than S.Bus, you can just connect the receiver directly to the serial ports, or to USB via a USB to TTY serial cable (e.g. like PL2302 USB to Serial TTL converter).
::: 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>
## Starting the Driver
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>
## Signal Inverter Circuit (S.Bus only)
S.Bus is an _inverted_ UART communication signal.
While some serial ports/flight controllers can read an inverted UART signal, most require a signal inverter circuit between the receiver and serial port to un-invert the signal.
:::tip
This circuit is also required to read S.Bus remote control signals through the serial port or USB-to-TTY serial converter.
:::
This section shows how to create an appropriate circuit.
### Required Components
- 1x NPN transistor (e.g. NPN S9014 TO92)
- 1x 10K resistor
- 1x 1K resistor
::: info
Any type/model of transistor can be used because the current drain is very low.
:::
### Circuit Diagram/Connections
Connect the components as described below (and shown in the circuit diagram):
- S.Bus signal &rarr; 1K resistor &rarr; NPN transistor base
- NPN transistor emit &rarr; GND
- 3.3VCC &rarr; 10K resistor &rarr; NPN transistor collection &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)
The image below shows the connections on a breadboard.
![Signal inverter breadboard](../../assets/sbus/driver_sbus_signal_inverter_breadboard.png)