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What about Assan?

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31 Jul 2013 13:12 #12642 by dwhacks
What about Assan? was created by dwhacks
So I'm finally moving to a Devo8s. It should be here this week, but currently most of my RX's are ASSAN. I find they work really good and are generally fool proof.

So, In the FAQ it says make a request for new protocols so thats what Im doing. I would gladly lend my TX module and and RX for someone to analyze.

Some info via Hobbyking:
www.hobbyking.com/hobbyking/store/__296_...rs-2_4Ghz_Assan.html

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31 Jul 2013 13:34 #12644 by vlad_vy
Replied by vlad_vy on topic What about Assan?
NRF2401 RF chip

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31 Jul 2013 16:50 - 31 Jul 2013 16:55 #12650 by blackmoon
Replied by blackmoon on topic What about Assan?
Could this be of any help ?

tomsik.eu/assan_x8_hack

and Assan X8 receiver hacking continued

tomsik.eu/assan_firmware

There is a assan_scan archive at the end of the page, firmware and library for avr...

Only thing not working is binding. :(

I know it's a rx firmware but we all know that PB is a magician :)
Last edit: 31 Jul 2013 16:55 by blackmoon.

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30 Sep 2013 05:35 #14152 by victzh
Replied by victzh on topic What about Assan?
This one uses bitrate not supported by nRF24L01 - 250kbit/sec. You need either use the same chip as they use - nRF2401 (no L), which is not very good - another chip support library, meaning code space can overflow the limit for Devo7E, another module, ancient programming techniques.

Another way is to use modern nRF24L01+ . I found a module - www.elecfreaks.com/store/nrf24l01p-pa-lna-v20-p-142.html .

I can not do this in the nearest future anyway - I still have ESky in works, playing with sunvsuv's code for HiSky (FBL100) and have Tactic SLT (Anylink, TX-Ready) in queue. And anyway, you need hardware for this even if you have a working code example and helpful individual who wrote the code for another platform.

It seems to be a Czech clone of one of Futaba protocols, am I right?

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30 Sep 2013 10:00 - 30 Sep 2013 10:11 #14160 by blackmoon
Replied by blackmoon on topic What about Assan?

victzh wrote: This one uses bitrate not supported by nRF24L01 - 250kbit/sec. You need either use the same chip as they use - nRF2401 (no L), which is not very good - another chip support library, meaning code space can overflow the limit for Devo7E, another module, ancient programming techniques.

Another way is to use modern nRF24L01+ . I found a module - www.elecfreaks.com/store/nrf24l01p-pa-lna-v20-p-142.html .


Thx for the clarification.

But isn't the chip found on modules like this one http://www.ebay.fr/itm/NRF24L01+ : used to support the V202 and FBL100, appropriate?

It isn't the "p" revision only the nRF24L01+

victzh wrote: It seems to be a Czech clone of one of Futaba protocols, am I right?


I really don't know, just stumbled upon while doing a search.
Last edit: 30 Sep 2013 10:11 by blackmoon.

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01 Oct 2013 18:23 #14197 by victzh
Replied by victzh on topic What about Assan?
I suspect that as Nordic moved to production of newer chip, nRF24L01+ (unfortunate name, BTW) instead of nRF24L01 everybody use it. It supports every other Nordic's 2.4GHz chips, both nRF24L01 bitrates - 1 and 2MBit/s and nRF2401 - 250kbit/s.

So with regards to Nordic we probably in the best position - everything is supported by chips which are now in production.

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09 Jan 2014 12:17 #18274 by superman7
Replied by superman7 on topic What about Assan?
There is a assan_scan archive at the end of the page, firmware and library for avr...

Smile PleazZZZzzzZZZzzzz……

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09 Jan 2014 16:09 #18285 by victzh
Replied by victzh on topic What about Assan?
Can you post a specific link?

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09 Jan 2014 18:51 - 09 Jan 2014 19:08 #18292 by blackmoon
Replied by blackmoon on topic What about Assan?
I think he just copied the line in my precedent post, nevertheless this is the direct link to the assan_scan archive : tomsik.eu/sites/tomsik.eu/files/assan_scan.tar_.gz

mmm just checked the archive it's not really sniffed packets, but code.

If I only knew how to hook it up and a methodology to follow, I would buy a cheap logic analyzer and play with it, so someone else could have a go with the results.

As I have a V2 module and some 4,6,7 ch receivers.
Last edit: 09 Jan 2014 19:08 by blackmoon.

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11 Jul 2014 03:30 #24526 by anthony
Replied by anthony on topic What about Assan?
any update information about Prtocol ASSAN ?

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12 Jul 2014 02:33 #24534 by anthony
Replied by anthony on topic What about Assan?
???? someone ?

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12 Jul 2014 02:53 #24536 by victzh
Replied by victzh on topic What about Assan?
I have no hardware and I need a TX and RX for this. They're expensive to just buy for fun of reverse engineering - I have no personal use for them. Also, there are many versions - 4, 6, 7, even 9 channel. Chances are we need to check many of these modules.

Also, some modules are harder to solder to than others. If you have some, and can take them apart, make detailed photos, and put somewhere (not here, this forum downsizes images) and put a link here that would help to decide of feasibility of such project.

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16 Sep 2014 09:09 #25691 by DonKracho
Replied by DonKracho on topic What about Assan?
For me it is the same as for dwhacks. I own about 35 ASSAN receivers and just got a Devo 8 from special sale. I flashed it to deviation 4.0.1. Hey folks, great work done here! After short time of usage I can say, I like it more than OpenTX. It works flawlessly with my Blade BNF models.

May be, it is possible to use the native ASSAN module in PPM mode. A problem will be the power supply because the Devo 8 uses 4 AA cells only. When being in other modes like DSM2 or DSMX the ASSAN module should be switched of automatically.

Is that an option that can be done more easyly?

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05 Mar 2015 04:09 #29340 by john
Replied by john on topic What about Assan?
a long time nobody update Assan protocol ? Nrf24l01 almost is public in all protcol atm.

devo 7e ,devo 10 install Assan protocol. great

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05 Mar 2015 20:49 #29370 by victzh
Replied by victzh on topic What about Assan?
People who can do this don't have the hardware and any incentive to buy it. Without hardware - TX and RX for testing it is impossible to add the protocol.

If you have Assan PPM TX module you can use it as any other PPM module.

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06 Mar 2015 04:59 #29387 by john
Replied by john on topic What about Assan?
i had it . but i still not yet know how to read signal , use a OSC ? Any guide on youtube ?

when i understand , i will try to post here . Futaba and assan protocol

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06 Mar 2015 05:48 #29388 by victzh
Replied by victzh on topic What about Assan?
First of all, make detailed photos of your RX and TX boards near the radio chip and put them here so that we can evaluate feasibility of soldering to it. Some boards are so hard to solder to that it complicates the effort a lot.

Then you need not an oscilloscope but logic analyzer to read the SPI bus. But first the photos.

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12 Jul 2016 15:10 #51577 by Bisky
Replied by Bisky on topic What about Assan?
Anny progres on protocole?

Ultimate 7E + range mod + 3x2 switch mod + 3in1 module
Devo F7 XMS + 4in1 module

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12 Jul 2016 19:10 #51583 by mwm
Replied by mwm on topic What about Assan?
There have been no dumps from a logic analyzer, or even dumps from a board to figure out if it's possible.

If you're serious about getting this done but don't want to do it yourself, I now offer working on protocols as a service. patreon.com/mwm .

Do not ask me questions via PM. Ask in the forums, where I'll answer if I can.

My remotely piloted vehicle ("drone") is a yacht.

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16 Jul 2016 10:22 #51743 by Bisky
Replied by Bisky on topic What about Assan?
Thanks for the info and offer. I think i will switch all receivers to dsm2, sems to be a cheaper option to do.

Regards, Bojan

Ultimate 7E + range mod + 3x2 switch mod + 3in1 module
Devo F7 XMS + 4in1 module

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