Furibee F36 protocol attempt

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13 Jul 2017 13:52 - 13 Jul 2017 13:52 #63420 by wasp09
Replied by wasp09 on topic Furibee F36 protocol attempt
Can we simulate LT8920 with any of the 4 existing RF modules? If not we may need to add that into our devo. $1 isn't too expensive. :D
Last edit: 13 Jul 2017 13:52 by wasp09.

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14 Aug 2017 18:42 #63807 by martonmiklos
Replied by martonmiklos on topic Furibee F36 protocol attempt
xxx, goebish, could you please confirm/deny the following:

The binding occours on the nrf24 CH2 (2402 MHz)? (The LT8920 has different channel layout it starts from the 2402 MHz)
Are the binding packets sent out continuously?

I have an LT8920 board now, but I was not able to receive anything with it yet.

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03 Sep 2017 14:22 #64142 by goebish
Replied by goebish on topic Furibee F36 protocol attempt
Yes the bind packet is sent continuously.
I was able to receive some packets with a LT89x0 but that was garbage. I tried with all the different modes, but I gave up eventually, maybe there are a few stuffs left to try ...
Also, if you're trying with the lt89x0 lib for arduino found on github it has many bugs and missing stuffs ...

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03 Sep 2017 15:24 #64143 by martonmiklos
Replied by martonmiklos on topic Furibee F36 protocol attempt
Hi goebish,

Thanks for your reply. Have you made your experiments with LT8910 or LT8920? According to the NST semi sales the LT5916 uses the later.
I have seen in older LT8910 datasheet that the FEC modes were reserved, but these fields appeared in the later ones.

Yes I am using that library, and I have had a feeling that it is not perfect.
Could you please share your setup's details? If you could share the code with me that would be great.

Thanks in advance!

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03 Sep 2017 15:36 - 03 Sep 2017 15:42 #64144 by goebish
Replied by goebish on topic Furibee F36 protocol attempt
I tried with a LT8900 (FEC modes not reserved), that's all I had around and as it's believed the protocol is using 1Mbps, that's the same than a 8910 ...
I found that in my arduino sketch folder:
www.dropbox.com/s/beb2jvw015t4paz/lt89x0.zip?dl=1
It has a sketch and a modified LT8900 library, I did that many months ago, I don't remember what it does, don't expect it do to anything magic ;)
Everything is hardcoded and in the state I left it when I gave up ...

Good luck !
Last edit: 03 Sep 2017 15:42 by goebish.

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03 Sep 2017 15:47 #64145 by martonmiklos
Replied by martonmiklos on topic Furibee F36 protocol attempt
Thanks for the quick reply, I will let you know if I got any progress.

Meanwhile I have converted an old Robbe Starion TX to fly my Furibee, and I have to say it performs much better:
hackaday.io/project/26253-converting-a-r...on-to-furibee-f36-tx

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03 Sep 2017 16:35 #64146 by martonmiklos
Replied by martonmiklos on topic Furibee F36 protocol attempt

goebish wrote: I was able to receive some packets with a LT89x0 but that was garbage. I tried with all the different modes, but I gave up eventually, maybe there are a few stuffs left to try ...

The bind packet was a garbage too?

With the LT8920 I receive the following packet constantly:
70 88 11 b9 6e 60 a5 14 55 30 48 64 b0 85 f4 b2 14 29 73 96 81 0d c1 96 51 8b d4 33 a2 e2 82 c6

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03 Sep 2017 16:55 #64147 by goebish
Replied by goebish on topic Furibee F36 protocol attempt
I don't remember, sorry.

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21 Oct 2017 18:37 #65167 by Elric
Replied by Elric on topic Furibee F36 protocol attempt
Hack is possible

hackaday.com/2014/08/05/sniffing-nrf24l0...ffic-with-wireshark/

We’re sure that some of our readers are familiar with the difficult task that debugging/sniffing nRF24L01+ communications can be. Well, [Ivo] developed a sniffing platform based on an Arduino Uno, a single nRF24L01+ module and a computer running the popular network protocol analyzer Wireshark (part1, part2, part3 of his write-up).

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21 Oct 2017 18:50 #65168 by goebish
Replied by goebish on topic Furibee F36 protocol attempt
Except the F36 has nothing to do with nrf24l01, the nrf24l01 doesn't even have a large enough rx FIFO to read F36 packets.
I spent quite a bit of time trying to make sense of the F36 radio packets without any success (using nrf24l01, lt8910, hackrf ...), looks like this quad isn't very popular anyway, so that's not worth the effort if you only ask me ;)

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03 Dec 2017 03:36 #66320 by martonibaksa
Replied by martonibaksa on topic Furibee F36 protocol attempt
I am wondering if any change or progress has been made and if there is any hope left in the F36 being bound to Deviation. Thanks.

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03 Dec 2017 16:08 #66321 by martonmiklos
Replied by martonmiklos on topic Furibee F36 protocol attempt
From my side:
I have managed to hook up an LT8920 with an Arduino Micro pro with the code Goebish provided to me.
I can capture packets during the pairing on the CH0 (IIRC), but playing back them does not pair with the drone.(I guess there are more handshaking on different channels).

I only have an RTLSDR, so I have been thinking about buying a downconverter for experimenting, but I have not got to that point.

Instead I built some "analog logic" and glued the original TX's PCB to an old FM transmitter's body:
hackaday.io/project/26253-converting-a-r...on-to-furibee-f36-tx

I still has some (but definitely low) intention for the reverse engineering because the constant beeping in headless mode annoys me a lot.

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15 Dec 2017 06:49 #66510 by hanred
Replied by hanred on topic Furibee F36 protocol attempt

martonmiklos wrote: From my side:
I have managed to hook up an LT8920 with an Arduino Micro pro with the code Goebish provided to me.
I can capture packets during the pairing on the CH0 (IIRC), but playing back them does not pair with the drone.(I guess there are more handshaking on different channels).

I only have an RTLSDR, so I have been thinking about buying a downconverter for experimenting, but I have not got to that point.

Instead I built some "analog logic" and glued the original TX's PCB to an old FM transmitter's body:
hackaday.io/project/26253-converting-a-r...on-to-furibee-f36-tx

I still has some (but definitely low) intention for the reverse engineering because the constant beeping in headless mode annoys me a lot.


LT5916 & LT8920 Datasheet as attachment .
Please refer to

File Attachment:

File Name: LT5916V0.1.pdf
File Size:426 KB

File Attachment:

File Name: LT89201.0.pdf
File Size:948 KB
Attachments:

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05 Feb 2018 11:40 #67401 by martonmiklos
Replied by martonmiklos on topic Furibee F36 protocol attempt
I have just received an MMDS downconverter for my RTL-SDR.
I have finalized it's production (removing the solderballs, fixing cold solderings, etc) so hopefully I will see the 2.4GHz spectrum soon!

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12 Mar 2018 14:26 #68028 by margotcopeland
Replied by margotcopeland on topic Furibee F36 protocol attempt

goebish wrote: Except the F36 has nothing to do with nrf24l01, the nrf24l01 doesn't even have a large enough rx FIFO to read F36 packets.
I spent quite a bit of time trying to make sense of the F36 radio packets without any success (using nrf24l01, lt8910, hackrf ...), looks like this quad isn't very popular anyway, so that's not worth the effort if you only ask me ;)


This quad, due to universally positive reviews, has become one of the most popular of the Eachine 010 type of nano quads. It's price/performance is IMHO and many others quite spectacular. I suggest you pick one up and see if you agree. If you hate it I'll most certainly buy the undamaged unit for $10.00 shipped.

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12 Mar 2018 17:51 #68031 by martonmiklos
Replied by martonmiklos on topic Furibee F36 protocol attempt
I think @goebish have had one since he did the most of the reveng stuff.

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12 Mar 2018 19:26 - 12 Mar 2018 19:27 #68032 by wasp09
Replied by wasp09 on topic Furibee F36 protocol attempt
I brought an F36 but have been flying it with another FC that supports silverware and using a protocol supported by deviationtx, Get one of those for around $10 instead of chasing after mission impossible. F36 is good mainly because of it has bigger motors. I don't see why we have to stick with its unknown protocol.
Last edit: 12 Mar 2018 19:27 by wasp09.

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31 Mar 2018 21:08 #68435 by martonmiklos
Replied by martonmiklos on topic Furibee F36 protocol attempt
I have just came across the Furibee H801. It's transmitter looks similar, but works differently (left stick centers).
Are there anyone here who can confirm/deny that the H801 transmitter is compatible with the F36?

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31 Mar 2018 22:48 #68436 by p1p3rn0
Replied by p1p3rn0 on topic Furibee F36 protocol attempt

wasp09 wrote: I brought an F36 but have been flying it with another FC that supports silverware and using a protocol supported by deviationtx, Get one of those for around $10 instead of chasing after mission impossible. F36 is good mainly because of it has bigger motors. I don't see why we have to stick with its unknown protocol.


Thank's! Now me too I have one of those for around $10 and I'm very happy :)
The only thing I'm in trouble is changing settings ..for example acro mode (left-left-down): many times it doesn't react.
Did you know if I have to change something in my jumper? Seems stick values don't reach max values or something similar.

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01 Apr 2018 07:42 #68437 by yets
Replied by yets on topic Furibee F36 protocol attempt
H801 is Bayang protocol, I think it's based on the B-03 BWhoop. Similar board.

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