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[Solved] Frsky X8R S-Port connetions


ivan_oinn
(@ivan_oinn)
Active Member Customer
Joined: 2 months ago
Posts: 7
Topic starter  

I am new to setting up the MSH Brain 2. I have run through the connections on the wizard and connected a female servo lead to the s-port and Channel 3, on the brain unit, plugged it in the pc, powered up the  rx, but all I get is a flashing red light on the flb unit.

Not sure if I am doing something wrong or I have a faulty unit.

 

I am on opentx lasetest version with x12s, the rx's have be flashed with the latest firmware ( tried it o  a x8r and s8r).

 

I wired up the unit to a futaba sbus2 and it works also run patch cables from the rx to the brain 2 and that works too..

 

Any help would be appreciated. 

 

Thanks


BrainDev
(@customercare)
Member Admin
Joined: 3 years ago
Posts: 672
 

Depending on the model of connected flight control unit and the protocol icon (FrSky / OpenTX) selected in panel 3 of the Wizard, the software automatically chooses the correct one from eighty different connection schemes and displays it for you in panel 4 "connections" of the Wizard.
Just read the instructions in the Wizard's panel 3, related to the selected protocol (FrSky / OpenTX) and then look at the displayed connection schema to understand how to connect the receiver.

immagine
immagine

ivan_oinn
(@ivan_oinn)
Active Member Customer
Joined: 2 months ago
Posts: 7
Topic starter  

Brain 

Thanks, it is saying I need the MSH51645 cable for the SBus, unfortunately they are out of stock in the UK.


BrainDev
(@customercare)
Member Admin
Joined: 3 years ago
Posts: 672
 

You can order them directly from our website, or, if you want to avoid having to pay customs duties due to the brexit and the cost of transport from Italy, you can ask our English distributor (ATmodels) to order them and put them in stock.

In the meantime, by temporarily giving up telemetry and integration (LUA-applications to modify flight control unit parameters from the transmitter) you can connect the S.Bus output of your receivers to the CH3 connector of the flight control unit and select the decoding of the S.Bus protocol in the flight control unit.


ivan_oinn
(@ivan_oinn)
Active Member Customer
Joined: 2 months ago
Posts: 7
Topic starter  

I may end up doing that, but for now I have order and Rx6r and an rs access rx, hopefully I can get one of them to work with the Brain2 without the lead.

 

thanks again


BrainDev
(@customercare)
Member Admin
Joined: 3 years ago
Posts: 672
 
Posted by: @ivan_oinn

I may end up doing that, but for now I have order and Rx6r and an rs access rx, hopefully I can get one of them to work with the Brain2 without the lead.

 

thanks again

The only protocols that transmit both channels and telemetry together on the same half duplex cable are F.Port protocol and F.Port2 protocol.
You should then load firmware that uses these protocols into the receivers and select the decoding of these protocols in the Brain2 flight control unit.
But the firmware available for these two receivers that uses these protocols is only ACCESS and not the ACCST.
Your X12S transmitter by factory work only with ACCST protocol. To work in ACCESS mode needs a specific ISRM module that is different from the one used by default by X12S transmitters and a specific firmware that is different from the one used by default by X12S transmitters. Have you already made these hardware and software changes to your transmitter?


ivan_oinn
(@ivan_oinn)
Active Member Customer
Joined: 2 months ago
Posts: 7
Topic starter  

yes i converted my x12s some time ago.  I have just found an Rx6R in the spares box flashed it with access and registered and bound it to the x12s. So i am now about to solder the wire to the small pad on the base of the rx


BrainDev
(@customercare)
Member Admin
Joined: 3 years ago
Posts: 672
 
Posted by: @ivan_oinn

...... i am now about to solder the wire to the small pad on the base of the rx

You don't have to solder anything. You can simply connect the 3-pin S.Port connector of the cable supplied with the receiver to the CH3 connector of the flight controller, select the INVERTED F.Port protocol icon in the configuration software of the flight control unit and then activate the F.Port protocol in the transmitter via the "Options" of the receiver.


ivan_oinn
(@ivan_oinn)
Active Member Customer
Joined: 2 months ago
Posts: 7
Topic starter  

Thanks all working now


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