FrSky FBUS - Revision history

Admin at 08:40, 9 December 2025

2025-12-09T08:40:55Z

Admin at 08:39, 9 December 2025

2025-12-09T08:39:38Z

Admin: Marked this version for translation

2024-10-30T09:52:16Z

Marked this version for translation

Admin: Created page with " With F.BUS both channel transmission and telemetry data are carried in a single wire. This makes wiring much easier and additionally, transmission is faster due..."

2023-03-13T11:01:54Z

Created page with "<languages /> With F.BUS both channel transmission and telemetry data are carried in a single wire. This makes wiring much easier and additionally, transmission is faster due..."

New page

<languages />

With F.BUS both channel transmission and telemetry data are carried in a single wire.
This makes wiring much easier and additionally, transmission is faster due to improved protocol design.

All recent FrSky receivers have support for F.BUS protocol.

Channel transmission, telemetry, integration and F.BUS sensors can work at the same time.

FrSky F.BUS is supported by Spirit Pro, Spirit 2 and Spirit GT units.
Spirit GT does not require any special cable. Other units will require the '''FrSky integration cable''' that can be bought in our Spirit eshop.

== Switching receiver F.BUS mode ==

First from all, it is needed to switch receiver to F.BUS. This can be possible directly in the Radio menu.

=== Downloading firmware ===

Some receivers will require to update firmware. It can be downloaded from FrSky web pages here.

=== Flashing firmware ===

==== With FrSky STK ====

Flashing can be done with a special USB dongle from FrSky called '''FrSky STK - S.PORT TOOL KIT'''.

Here you can find video how to perform the flashing process:

https://www.frsky-rc.com/how-to-use-frsky-stk-tool-to-update-firmware/

==== With radio ====

You can also flash receiver firmware through your radio. Please check the FrSky video here:

https://www.frsky-rc.com/how-to-use-the-transmitter-to-flash-the-firmware-of-the-x8r-receiver/

== <translate>
FrSky F.BUS Wiring</translate> ==

=== Spirit Pro, Spirit 2 ===

[[File:Futaba-cable.jpg|700px]]

<translate>To allow telemetry transmission the '''FrSky Integration cable must be modified'''. For this purpose you will need a servo' plastic plug (already included with the cable).

'''Modification of the longer end'''
#Use a needle to free-up the Red wire from the plastic.
#Then plug the Red wire from the middle to a separate servo plastic (at the signal position).
</translate>

[[File:Futaba-cable-mod.jpg|400px]]

Please connect FrSky integration cable according the following photo.
Orange and Brown wires must be connected to the '''RUD port'''. Red wire must be connected with '''AIL pin'''.

Please connect also a '''direct cable for powering the receiver''' to AUX2 port if possible - this cable is supplied with Spirit unit. Alternatively you can use a secondary BEC power cable to power the receiver.
FrSky integration cable can't feed power to the receiver alone so without this, it can't work.

[[File:FPort-Spirit2.jpg|500px]]

Please note F.BUS support for these units is available from firmware version 3.5.0.

=== Spirit GT ===
Please connect stright cable between S.PORT and RUD port of the Spirit GT unit.
S.PORT is used for F.BUS protocol.

[[File:FPort-Wiring.jpg|700px]]

== Spirit Settings configuration ==

Once wiring is done, please set '''FrSky F.BUS''' receiver type in the Spirit Settings.
Then save the settings and repower the unit. From this moment everything should work.

[[File:Fbus-Settings.png|500px]]

@@ Line 37: / Line 37: @@
 == <translate><!--T:1-->
 FrSky F.BUS Wiring</translate> ==
 === Spirit Pro, Spirit 2 ===
@@ Line 62: / Line 69: @@
 Please note F.BUS support for these units is available from firmware version 3.5.0.
 == Spirit Settings configuration ==

@@ Line 8: / Line 8: @@
 Channel transmission, telemetry, integration and F.BUS sensors can work at the same time.
-FrSky F.BUS is supported by Spirit Pro, Spirit 2 and Spirit GT units.
+FrSky F.BUS is supported by Spirit Pro, Spirit 2, Spirit 3, Spirit GT and Spirit W1 units.
-Spirit GT does not require any special cable. Other units will require the '''FrSky integration cable''' that can be bought in our Spirit eshop.
+Spirit 3 and Spirit GT does not require any special cable. Other units will require the '''FrSky integration cable''' that can be bought in our Spirit eshop.
 == Switching receiver F.BUS mode ==
@@ Line 63: / Line 63: @@
 Please note F.BUS support for these units is available from firmware version 3.5.0.
-=== Spirit GT ===
+=== Spirit 3, Spirit GT ===
 Please connect stright cable between S.PORT and RUD port of the Spirit GT unit.
 S.PORT is used for F.BUS protocol.

@@ Line 42: / Line 42: @@
 [[File:Futaba-cable.jpg|700px]]
-<translate>To allow telemetry transmission the '''FrSky Integration cable must be modified'''. For this purpose you will need a servo' plastic plug (already included with the cable).
+<translate><!--T:2-->
 '''Modification of the longer end'''
 #Use a needle to free-up the Red wire from the plastic.