I recently learned that Arduplane is on the list of firmware available for the speedybeeF405mini, I downloaded it, installed it and everything was perfect, but I have not found information on making it recognize the PPM-encoder signal, since I use a 8-channel Frsky receiver without telemetry .
On the speedybee F405Mini, the PPM input is on the RX2 UART, at 115200 Baud, and betaflight recognizes the signal just by configuring the UART, everything is perfect, but, according to ardupilot, the PPM signal is not detected automatically, I knew that exception from the ardupilot page, I have connected servos and they work perfectly in Stabilized mode responding to the sensors, in my opinion, everything is perfect, I just can’t get it to recognize the RC signal via PPM-ENCODER!!!
I hope you can save me!! 
What receiver exactly are you using?
V8FR-II, but I am using a ppm Encoder, just the one in the photo in my post!!!
get an sbus encoder instead of a ppm encoder?
8CH PWM PPM SBUS Signal Conversion Module Converter 3.3-20V For RC Airpanle DIY | eBay?
What Transmitter or Tx module? Might be easier just to replace the Rx with an Sbus one.
Yeah, that’s why I was asking. Just ditch anything PPM.
Is there a way to reflash those PPM-ENCODER so that it is something like Sbus encoder? I think that’s my solution!! Who should I write to? Do you know any gurus on this topic?
use the FrSky DFT module with an old radio!! and it works perfectly for me in betaflight, I don’t know why it has been difficult for me in Arduplane, where I live I don’t have many options, I think the best thing is to investigate and modify, that’s why my post in this forum!!! Everything works perfectly, I just need it to recognize the receiver!!!
OK, that’s old. You can’t make any comparison between Betaflight and Ardupilot. You won’t be able to flash the encoder, get a new one that’s Sbus.
3 cheers for Speedybee keeping the forum alive with issues!
I don’t think speedybee is the problem, With betaflight it works perfectly, the adaptation to Arduplane with that FC is from ardupilot, They were the ones who didn’t give much information about the PPM on that board with the Arduplane firmware!!! That’s where the thing is, I think there is a lack of documentation on this topic from ardupilot. Honestly, everything works fine, I just need that, that it recognizes the signal, but nowhere does it say that PPM is not compatible!!
Yea it does.
It’s right in the Doc’s Speedybee F405 wing
Ohh,bro, That is the wing version of speedybee, haha, I am using the speedybeeF405mini, which comes for a drone, and on the ardupilot page, it does not mention that PPM is incompatible!! 
,
The topic is addressed as incomplete in that topic,
its on the ardupilot page as compatible with ppm, I suspect that image has just been copied over without looking at all the components.
as far as i know ppm is only supported on ardupilot controllers that use an RCIN pin instead of a UART port like that does.
Oh Bro! Try that Google search for F405 Mini
Any UART can be used for RC system connections in ArduPilot also, and is compatible with all protocols except PPM
finally someone is going my way, that’s my doubt!! What is the RCin entry on that board, to which the firmware modification was made, And I attest that it works, but I was left with that doubt, because what they specify well is that the UART inputs detect almost all Receiver protocols, except PPM but they do not say that PPM is incompatible,What would be the input RCin?
that board doesnt have a RCIN pin so it doesnt support PPM with ardupilot as it uses a UART port for RC that doesnt support PPM. betalfight can do it because they remap the pins essentially substituting one for another. ardupilot does not support hardware remapping, neither does Inav, its a betaflight only function.
That was the answer I needed to stop trying!! if I found a way to convert PWM signals into Sbus Signals? would it work? Would ardupilot detect them?There has to be a way to reflash my PPM Encoder with some variant for S-Bus!!! The internet is too big for that not to exist!!! jjjj
just use the sbus encoder i linked to earlier.
My intention to look for variants is not because I am stingy or not spending money!! , It’s because where I live it is tremendously difficult to make shoppings online, and you have to do with what you have, or else learn to modify, that’s why my impetus to reflash!! I already have one, and they are based on atmega328p, well there must be a solution!!
i had a look at some pictures of the 328 and done some checking and i think this will work with modifications to the pins used
from what i could see 1 and 2 input is TX and RX.
you will need to connect it to the RX pin on the flight controller and not the SBUS pin, since reguar sbus is inverted the flight controller has an inverter onboard connected to the RX pin, since we are just sending it uninverted it can be connected directly to the rx pin.
