X-UFO transmitter signal to PPM

[FredericG]

I was hoping to use my old X-UFO transmitter in combination with my (reflex) simulator. However it does not generate a standard PPM signal. Each edge seems to indicate a new channel while PPM indicates another channel with a fixed size pulse. The length of the data-pulses seem equivalent to PPM, 0.5 to 2 ms.

With a microcontroller translating should simple. Perhaps it is as easy as generating a negative fixed-size pulse each time the input signal changes. I feel like experimenting with it immediately but I fear I will again put much more time in it than foreseen. Perhaps somebody has a solution laying on a shelf?

Thanks,
Frederic

[FredericG]

I just tried the simple approach of generating a pulse when the signal changes. The good news is that it works (with Reflex) :)

There is some "bad" news too... I was thinking, how is it possible they have a signal that is so close to standard PPM and so easily convertible? So I decided to continue searching for a real PPM signal, this time on the underside of the PCB; until now I have been searching the visible side. On the other side there are lots of SMD components and there I have found something that looks like PPM... :censored:

Frederic

[quax]

Hi Frederic,

did you test this signal?

http://home.versanet.de/~b-konze/xtwin/xufo_mod/signal.jpg

I think, it's the correct PPM signal.

Ciao
Quax

[FredericG]

Possibly this is the same signal I had found on the other side of the PCB. I have a working solution now, be it much more complicated than needed. But your info can be handy for others trying to use their XUFO.

Thanks,
Frederic

[Heli_Fanatic]

Is there anyway to boost the signal on the ufo TX to get better range? I know nothing about this kind of stuff. I just don't want to shell out $200.00 bucks for a new TX.

Thanks,
John