XPS,

Over the years I've been able to use the XDP device or the Telemetry Station for the XPS Radio System applications like the Programmer, Scanner and Updater.

I just observed that while the Telemetry Station works with the RSSI application, I cannot run it with the XDP device.

Should the XDP work with the RSSI application?  Or, it the RSSI application only intended for only the Telemetry Station?

Thank you,

Paul

i am not sure if this entire forum thing here is dead and useless (sad) but i post anyways.
i got the RF module from XPS way back to convert my multiplex EVO pro 16 to XPS. 
so i wonder if the XPS model can be programmed or used for the spectrum DSM or DSM2 receivers?

i sort of miss jim's personal replies and expertise - how well things change, look at our country (US)

thanks
erhard

i wonder if anyone has a possible explanation for the following model behavior with nano receiver.

first time i crashed a larger glider 6 years ago the following way: i did i range test as recommended and forgot to remount the transmitter antenna. nevertheless i flew on a slope and the plane flew beautifully but then went into a sudden dive, i obviously pulled the elevator but nothing happen and just before crashing it recovered. oh i thought what was that and kept flying and it happened again, same thing it recovered. no i thought oh i better land. so i flew a larger loop behind the hill made a turn and the plane flew towards me ready for landing and suddenly when into a dive again and crashed. 
obviously i blamed the missing antenna. i am not sure how fail safe is set but when i just turn off the transmitter all servos stay where they are. 

second time just 1 week ago: another glider, flying happily and same dive behavior and plane luckily recovered. i thought it was maybe a down draft in the hills but way would it go in a real dive as if pushing down the elevator? after inspecting the plane i thought i found an issue with a lose vtail mount which allowed the vtail to slide along the fuselage. obviously nit good, so i fixed it thought that was it and following 5 flights or so where fine.
today i flew again and again the sudden dive happened and luckily i could recover just before crashing.

so what can this be?
down drafts don't seem to really explain the sudden dive
losing RC link should leave the servos in place and not cause the dive

any ideas what be great because it makes me very uncomfortable 

btw: transmitter is a multiplex EVO 16 with XPS RF module

thanks
erhard

Can you  do a serviceability check on an X24 after a crash. Lost all control mid flight.

Thanks

Jim,

I have an airplane with a narrow fuselage that is filled with a motor, ESC, motor battery, X10+RFU and servos.  The fuse also has a large metal landing gear bracket for the two main wheels.  I had signal blocking problems with this airplane with two different radio systems, including XPS.

Even when I placed the receiver antennas away (as much as I could in the small fuse) from those interfering parts and oriented them at 90 degrees to each other, there were still angles at which the receiver couldn't see the transmitter.  I would experience momentary lockouts until the airplane's orientation changed enough for the receiver antenna to come back into view of the transmitter.

I eventually placed one of the RFU antennas facing vertically down and sticking though the bottom of the fuse and this solved the RF blocking problem.  However, the little nub sticking out under the fuse sometimes gets knocked around by the occasional rock, or I bend it if I pick up the fuse by grabbing it at the wrong spot.

I ideally would like to locate a Nano or RFU back near the tail, away from the main part of the fuse.  Regrettably the fuse is narrow back there and it would challenging to install the Nano or RFU and route the antennas.  I could put a Nano or RFU out near a wingtip, but I can't run the serial cable to it because the wing is sealed.

Is it possible to have an alternative "larger" antenna than the standard "one inch" elements?  Could a longer wire antenna be tuned to receive the 2.4GHz signal?  I'm thinking of something like an old school 72MHz 39 inch wire antenna that could run from the back of the canopy out to the top of the tail fin.

(This is kind of an ironic request, given that for almost twenty years we've enjoyed the convenience of installing small 2.4GHz receivers with their tiny antennas and not having to deal with long wire antennas.)

Thanks,

Paul

I have a XPS X-24 that started acting up. I can only plug the right side battery lead in to get power to the screen and have a semi - operational board.
I say semi-operational because the power switch on the outside of the aircraft doesn't completely shut off the unit. The screen says it is powering down and the servo's stop working but the screen stays on.

The board seems to function fine with only the right side battery hooked up with the exception of the power switch not completely turning off the X 24.

If I plug the left side battery in, either by itself or with the right side battery plugged in,  the only thing that happens is a solid white LED but nothing else, the screen stays dark and no power goes to the servos. I did notice that the receiver gets powered up though.

I pulled the back cover off the X 24 and found one of the FET's was chipped and broken open. I believe it is the #2 one.
There are two FET's for each side right next to the power leads on either side for a total of four FETs. The one that is broken is right next to the power wires on the left side of the unit that seems to be problematic.

I was wondering if this could be the issue and if it could be replaced?

The FET's have these numbers on them: 4P04L11 GBL650

I know very little about these things but was wondering if that single FET could possibly fix this board or if possibly there may be more damage that I'm not seeing.

Any tips or ideas greatly appreciated as I really like this board and all it is capable of.

I'll try to attach a picture showing the FET.

Chris K.    
Lake Havasu, AZ.

The new version of the X10+ is in final testing.  This version offers substantially more features than the original, including full setup all of those features wirelessly via any smart device or PC web browser - no more cables or specific software needed!  Wireless firmware updates too!

The size is 0.150" taller, but the same width as the existing unit.  There are now two LEDs to show the status of both receivers independently.

The X10+ supports up to 40V now, so you can use it with 24V robotic setups safely.

Hello.
Don't understand why X16 Mlink flickers a lot with many lost frames. Doesn't matter if I use Mpx Mlink or Radimaster Boxer and their ER receivers.
How should I interpret the LF values that count at a fast rate, what is acceptable? Is there anything I can do to make the green light shine with a steady light and avoid all lost frames?
My X10+ behaves the same. Otherwise, everything works as it should, all the servos move smoothly and well.

/Ville

Jim,

I "learned" (just internet so I do not know how reliable the information is) that Futaba's SBUS uses 3.3v or 5v to represent a zero logic value in the bitstream and ground as a logic one in the bitstream.

FrSky's SBUS uses the opposite:  They have ground as a zero value and 3.3v or 5v as the one value.

In my experiment where I fed SBUS to the X10+v2 from an FrSky receiver, the old analog servo did not work, but the digital servo worked.  When I fed the X10+v2 SBUS from a Futaba receiver, both the old analog and the digital servo worked.

We concluded that the frame rate used by FrSky was too fast for the analog servo.  Could it also have something to do with the FrSky SBUS voltages being opposite to that of the Futaba standard SBUS signal?

I had the X10+v2 configured to accept "Futaba SBUS" as the input (not the inverted choice).

Thanks for your opinion,

Paul

I tried this experiment again, this time with a Futaba R2000SBM S-FHSS/SBUS receiver and got an interesting result.

I connected the SBUS output of the Futaba receiver to the X10+v2.

When I powered up the transmitter and receiver, I immediately got a green light on the X10+v2.  I connected the old S148 servo and it worked perfectly!  (It didn't work with the FrSky SBUS receiver).  The digital servos, as expected, also worked perfectly. 

The Transmitter is not even a Futaba transmitter, it is an OpenTx set with one of those 4in1 chipsets that includes the S-FHSS option.

I suppose that the S-FHSS protocol sent by the transmitter, in conjunction with the Futaba receiver and its SBUS link to the X10+v2 results in a frame rate that the S148 can handle.

I'll bet the FrSky SBUS uses 9ms frames and they are too fast for the S148.  The Futaba SBUS receiver probably uses 14ms frames and the S148 can accept that.

My conclusion is that I have solution if my XPS-J1 transmitter module dies and I can no longer use my XPS receivers - I can use Futaba SBUS receivers with X10+v2s (or v3s and beyond) with my airplanes that still have analog servos.