FQ777-124 Pocket Drone

Yeah try hooking it up to the computer and put some serial print messages in. That is what I did before I had the Taranis. I disabled the PPM input, forced the protocol to FQ777-124, and added a Serial.read so I could input some commands from the serial monitor.

This is what my board looks like:

goo.gl/photos/S1iCKukLS4KbUmfEA

Is yours the same?

bikemike wrote: Yeah try hooking it up to the computer and put some serial print messages in. That is what I did before I had the Taranis. I disabled the PPM input, forced the protocol to FQ777-124, and added a Serial.read so I could input some commands from the serial monitor.

This is what my board looks like:

goo.gl/photos/S1iCKukLS4KbUmfEA

Is yours the same?

I did not open it but by hacking the codes, I was able to bind but it took off
I need to check my PPM output from the radio to pin 2.
I could not get the Turnigy 9Xr-Pro to work but I got the Devo 7E to at least able to fly the Bayang protocol - H8
More to come.. Hopefully someone can convert this to Deviation soon.

So it seems nobody of the experts at the Deviation community is interested to implement this for the nightly builds

Hi Bikemike,

I'm working on another project called "DIY-Multiprotocol-TX-Module" hosted here on github: github.com/pascallanger/DIY-Multiprotocol-TX-Module
At the request of a couple of persons I've added the FQ777 protocol based on the source you've published on GitHub.
Althought I had to make small changes to get it integrated, it's basically the same code.
But they are reporting that it does not bind. I've verified that their quads are using a SSV7241.
I don't have a FQ777 myself to test so it's hard to troubleshoot...
Would it be possible for you to look at my implementation and see if you can spot something?

Thanks, Pascal

I can try to look into it. How easy would it be to get your code working with an arduino nano, nrf24l01+, and a Taranis?

I've visited you Git repo Today, pascallanger, i got an stock radio for an FQ777 and one Arduino Nano plus 1 NRF lna on the protoboard waiting some freetime Tonight, can you Post some leads ?

Bikemike,
You can easily do it with the hardware mentionned, the schematic and all informations are on the github repository. Make sure to power everything in 3.3v to not kill your nrf but you know that.
The module works both on PPM and Serial:
- On PPM, the protocol selection is done via a dip switch.
- But you might be interrested personnaly by the serial protocol. We've got a firmware for your Taranis based on OpenTX 2.1 (and when realesed 2.2) or ersky9x which adds the possibility to select the protocols directly from the radio. Not only that but also all associated parameters like model match, bind, range, power and everything linked to the model settings. No more ppm for the channels but serial data so there is no loss and full channels resolution.
Banggood sells a fully working module which runs our code: www.banggood.com/2_4G-CC2500-A7105-Flysk...tenna-p-1048377.html .
We not only support the nrf but also all other rf chips A7105, CYRF and CC2500.
Let me know if you have any questions.
I might have found a friend that could loan me a FQ777 this WE but it's still unsure...
Regards, Pascal

I eventually got the code compiling with my nano but I couldn't get the radio to work for some reason. Maybe I didn't connect the wires properly.

I did notice one bug in the code though:

github.com/pascallanger/DIY-Multiprotoco...77_nrf24l01.ino#L105

That line should be:
I'm not sure if that is the only bug but I didn't have more time to try and get the radio working.

bikemike wrote: I did notice one bug in the code though:

github.com/pascallanger/DIY-Multiprotoco...77_nrf24l01.ino#L105

That line should be:

packet_ori[7] = packet_ori[4] + packet_ori[5] + packet_ori[6];

I'm not sure if that is the only bug but I didn't have more time to try and get the radio working.

That was it, after this change it binds with the DIY module!

pawelsky wrote: That was it, after this change it binds with the DIY module!

Great, I'm glad to hear it works for more than just me!

Well done!!!
I don't know how I've missed that

Thanks for checking, Pascal

I managed to put together the board and connect to my Tunigy 9XR-Pro. The problem was the NRF24 was not getting a good power source. At least I am flying FQ777-124 with a real remote now. Thank you very much BIKEMIKE. Now hopefully someone can port it to Deviation.

I've got another report that it's working fine.

Good job

goebish wrote: Good job guys !
Is someone already porting this to Deviation or should I do it ?

@bikemike can you make a PR of your FQ777 branch to my github if it's working fine ?

I think we were waiting for someone like you to do your MAGIC !!!
I tried but got nowhere. Maybe I can learn after you ported it to Deviation. Thanks in advance.

goebish wrote: Here are some test builds, select FQ777 protocol:
www.dropbox.com/sh/2gpmjjo894efpbc/AAAMV...i2lnWpOhEfnu1Xa?dl=0
source code

Please report

There's only 1 fixed ID and associated rf channels, do we have dumps from more transmitters so we can try to guess how it works ?

That was super fast !! Did not expect you start coding right away. I download and tested the 7E-256k version and the only changes to the mode 2 controller are reverse the Rudder / AIL from normal to reverse. Everything else works.

Now I have to go and study your code. Thanks.