Speedybee F405 wing. Where to connect sik radio?

[stefymtb (step)]

So i have Holybro sik radios.

Where should i plug the one on the plane?

I do not know the numbering of the uart on the board.
Also i know nothing about the wiring, as no port seems to be labeled with same names from sik radios.

Below is the port i am using. Have no idea if uart 6 or other.
Also, the radios are connected. but can not connect to mission planner.
No heart beat. Correct port and baud.

[dkemxr (Dave)]

@stefymtb

I do not know the numbering of the uart on the board.

Arducopter SB F405 Wing

[stefymtb (step)]

I know this of course.

But could you point what is uart6 on the image pls?
I can not.

[dkemxr (Dave)]

@stefymtb

But could you point what is uart6 on the image pls?

Why?

• SERIAL6 → UART6 (tied to internal wireless module, MAVLink2 telem)

[stefymtb (step)]

F405 Wing telemetry problem

After even more reading, i came to a conclusion that my external telemetry radio is actually most likely connected to Serial 4 port, because the solder pads on the board say “R4” and “T4” which, I think, correspond to Serial 4. After changing SERIAL4_PROTOCOL to 1 (MavLink 1) or 2 (MavLink 2) On Mission Planner via USB, I still can’t connect to the board via Telemetry, am I missing something? Also sorry for all the mistakes I make, I can fairly say that I’m still pretty new to these new devices…

I had a look at this topic.

So main problem is i do not know what port number i am connected to. How do i know it if it is not written on the board or manual?

[dkemxr (Dave)]

@stefymtb

So main problem is a do not know what port number i am connected to.

Why not? Use UART4 (Tx4/Rx4) or the UART5 on the DJI Connector if you are not using that.

[stefymtb (step)]

I am using dji vtx, gps (they are close) and usb plug module.

I plugged the sik radio on the side instead.
As shown in the picture i uploaded.

Is that what uart number?
Because i know uart 6 may not be available bevause of wireless module?

So, if not that, what number? Where is it on the board?

Edit: is the numer after tx/rx the number of the uart?

[dkemxr (Dave)]

@stefymtb

is the numer after tx/rx the number of the uart?

6 is not available and the uart/serial port numbers are right in the wiki and in my last post. What else would Tx4/Rx4 be? Connect to Tx4/Rx4 and configure with Serial4

Note: I don’t use F4’s or Speedybee Flight Controllers, just following the available docs. Maybe someone else has something to contribute.

[stefymtb (step)]

Please be patient.

This is not my first model, but this time seems like it is a little bit more difficult with this new fc.

The problem i had (it is almost clarified now) was to know fisically on the board what was uart1, what was uart2…

Now i know that i can refer to numbers near rx/tx.

If i look at tx1, i can find it in two diffent places…but i will find this out later…now i am focused on the sik radios.

Thank you Dave!

[dkemxr (Dave)]

It might help too to look at the Ardupilot Mapping table in the Speedybee manual.

[stefymtb (step)]

I can see it now. I am connected to Tx2/Rx2
I change that parameter and it should work.

What about the cables called RTS and CTS?
They will be on Tx4/Rx4

[Allister (Allister Schreiber)]

You don’t need RTS an CTS for the SiK radio. Just the RX,TX,5v,gnd.

[stefymtb (step)]

It’s working!

Set serial# to mavlink
Set serial# baudrate

Thank you so much! Sometimes solution is in front of my eyes and i just can’t see it.

Do i need to remove RTS and CTS cables or they can stay there?

[Allister (Allister Schreiber)]

It’s up to you. If you don’t connect them it doesn’t really matter as long as they aren’t getting in the way or shorting something else.