Frsky compatibility

Pff my receivers are still in the "processing for departure state". That means I'm looking at around 10-11 days till arrival.

PhracturedBlue wrote: FYI, I'm having some issues with this protocol again.
It works fine with one of my modules but not another. The Frsky discussion on RCgroups indicated they had some tuning issues with the frsky module. Figuring out precisely what is going on may take some time. The module itself works fine with the skyartec protocol, though, so it is somewhat suspicious.

Out of curiosity, which module gives you trouble?

I installed the the xl2500-d03 last night... so I'm betting its that one...

I have the other one coming in the mail.

Hexperience wrote: I installed the the xl2500-d03 last night... so I'm betting its that one...

I have the other one coming in the mail.

No luck with the D03?

I haven't tested it yet. I only had a chance to make sure I didn't screw up the devo module. I can still bind and control my v450d03 and I get telemetry back... so far so good.

I'll be testing the frsky protocol in an hour or so...

I can't believe I didn't fry it altogether. My eyes have trouble seeing those tiny little pins...

Hexperience wrote: I haven't tested it yet. I only had a chance to make sure I didn't screw up the devo module. I can still bind and control my v450d03 and I get telemetry back... so far so good.

I'll be testing the frsky protocol in an hour or so...

I can't believe I didn't fry it altogether. My eyes have trouble seeing those tiny little pins...

I use a SMT soldering iron with a fine tip and magnification. Makes things easier.

Using the 12s nightly build, I am only able to set the frsky protocol to 4 channels.

I'm not able to get it to bind as of yet....

--- later that day....

Built a new one from the repo, I now have frsky1 and 2.
I can select 8 channels on frsky2

still trying to get a bind....

----

Still can't get it to bind. I've confirmed the rx is fine by rebinding it with my 9x/frsky module.

I must have done something wrong when hooking up the xl2500 module.

Unfortunately I'm not a great electronics trouble shooter...


[modules]
enable-cyrf6936=B12
has_pa-cyrf6936=1
enable-a7105=None
has_pa-a7105=0
enable-cc2500=A14
has_pa-cc2500=1

Is there anything I can do with a normal multimeter to see which wires I may have soldered wrong?

Hexperience wrote: Is there anything I can do with a normal multimeter to see which wires I may have soldered wrong?

You can probably check for shorts. I usually check with a magnifying glass and if something looks suspicious I pull my multimeter out.

Better check the diagrams again just to be sure.

I went by this diagram..

www.deviationtx.com/forum/protocol-devel...bility?start=60#8144

But my soldering skills not not the best. I was pretty sure everything was ok, but I guess not. I removed it for now and will try again when I have my giant magnifying glass.

The diagram and the tx.ini fit together, as far as I can see. Did you count the pins at the module or have you looked at the labels / in the manual? Not every cc2500-module seems to have the same order...

I'm pretty sure I had the right order, but I'll try again...

The one that works at the moment with the two protocols is the skyartec one ?

If no, I'm doomed

Thank you.

So I ordered one of the skyartec modules as well... why not have all 3 right?

I also picked up a wire wrap tool and will re install the xl2500 module just to see if it was bad soldering on my part the first time around.

Keep up the good work PB!!

So I reinstalled the xl2500-d03 module and this time I used wirewrap and made sure I connected up correctly, and I'm not able to bind.

No worries... I've got two other modules on the way...

Should I be getting +3.3v on the TCK line?

I wish I could help but I'm just along for the ride... I'm sure you'll get it worked out with time. I think it's as much fun to play with the radios as it is to fly so whatever happens is fine with me...

Cheers!

FYI,
in some RF front-end chip, like A7700 which in XL7105-D03 module, if you enable both PA and LNA, it goes to suspend mode.
Has anyone opened the XL2500-D03 case and looked for RF front-end chip being used?