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New Hubsan Upgraded Version on the way

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20 Dec 2013 12:23 #16832 by Xermalk
Replied by Xermalk on topic New Hubsan Upgraded Version on the way
Any plans on implemeting the voltage telemetry and fpv frequency changing implemented with the new hubsan 107D transmitter ?

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20 Dec 2013 12:27 - 20 Dec 2013 12:47 #16833 by goebish
Replied by goebish on topic New Hubsan Upgraded Version on the way
I don't plan to buy a RTF H107-D so I can't reverse the protocol as I did with the H107-L.

If someone with a logic analyzer have one I can help him with the reverse, it shouldn't be difficult at all, at least for the vtx channel selection part.
Last edit: 20 Dec 2013 12:47 by goebish.

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20 Dec 2013 13:01 - 20 Dec 2013 13:12 #16834 by Xermalk
Replied by Xermalk on topic New Hubsan Upgraded Version on the way
Unfortunatley i dont think anyone has a logic analyzer in my club :<
Last edit: 20 Dec 2013 13:12 by Xermalk.

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20 Dec 2013 13:23 #16836 by goebish
Replied by goebish on topic New Hubsan Upgraded Version on the way
Getting a (cheap) logic analyzer is the easy part, we've to find where to hook it in the TX (3 wires SPI), then log and interpret the results.

I still have the C program I made to interpret H107-L packets (in & out, so it should be able to easily sniff telemetry data too).

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20 Dec 2013 23:41 - 20 Dec 2013 23:48 #16865 by Xermalk
Replied by Xermalk on topic New Hubsan Upgraded Version on the way
Does anyone know what frequencies the hubsan protocol uses?
The exppswd part on my v939 module is 28mm so its a bit of(30-35mm is normal fpr 2.4 ghz wifi), and i want to calculate its proper length.

Btw ill get my 107d rtf sometime in january so i can open it up and take some photos then. Dont think anyone on rcgroups has done that yet.

The 107d bnf flies just fine now, once i sorted out the issues with my devo 10.
Its using the same channels for leds/flip mode. the fpv frequency might just be another channel. Unless the channel representation in deviation is actually something more.

I have a genuime arduino nano v3 a cloned usbasp and a ftdi programmer incase one of those could be used as a logic analyser.
Last edit: 20 Dec 2013 23:48 by Xermalk. Reason: stupid tablet typos

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21 Dec 2013 08:48 - 21 Dec 2013 09:51 #16874 by goebish
Replied by goebish on topic New Hubsan Upgraded Version on the way
It's 2.4GHz, 30-31mm antenna is perfect.

Technically I think an Arduino should be fast enough to log the SPI bus inside the TX using the SUMP protocol , but I never tried it and that would be painful due to limited RAM (maximum 1024 samples per capture).

Salae logic clones (< $8 ) are so easy to use, this is by far the most useful hacking and debugging tool I ever bought ...
Last edit: 21 Dec 2013 09:51 by goebish.

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22 Dec 2013 15:12 #16925 by Xermalk
Replied by Xermalk on topic New Hubsan Upgraded Version on the way
Just flew with my clubmates tx, and unfortunatley the 107d does not remember the video frequency when power down. So im going to have to hunt down a tx myself.

I did find the saleae analyzer in sweden, but as usual its stupidly expensive. 45$ including shipping :angry:

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22 Dec 2013 17:35 - 22 Dec 2013 17:37 #16927 by goebish
Replied by goebish on topic New Hubsan Upgraded Version on the way

Xermalk wrote: Just flew with my clubmates tx, and unfortunatley the 107d does not remember the video frequency when power down.


That's probably because the TX continuously send which frequency should be used, with each frame. I'd really like to help but I don't want to buy the TX, it's not cheap and I know I'll never use it...
Last edit: 22 Dec 2013 17:37 by goebish.

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22 Dec 2013 17:45 #16928 by Xermalk
Replied by Xermalk on topic New Hubsan Upgraded Version on the way
Im just going to get the tx locally. And cancel my rtf order on banggood as they keep pushing back the eta on them every second day.

Ill probably order one of those analyzers, but it wont arrive anytime soon from banggood.

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22 Dec 2013 17:47 #16929 by goebish
Replied by goebish on topic New Hubsan Upgraded Version on the way
No problem, poke me when you have it if you need help :)

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22 Dec 2013 20:22 - 22 Dec 2013 20:23 #16930 by Xermalk
Replied by Xermalk on topic New Hubsan Upgraded Version on the way

goebish wrote: No problem, poke me when you have it if you need help :)


Ill get back to you in 3-5 weeks when i get the analyzer. Unless someone else has done it before then.

Banggood + fast shipping just wont happen this side of the big crunch :lol: .

Should be able to get some internal pictures of the tx soon though. Managed to buy one from a club member whos 107D blew away never to be found again.
Last edit: 22 Dec 2013 20:23 by Xermalk.

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26 Dec 2013 23:32 - 26 Dec 2013 23:39 #17070 by Daryoon
Replied by Daryoon on topic New Hubsan Upgraded Version on the way
I'll upload some photos of the TX's board.

Will need to know where to hook up the analyzer.

Here's a link to the full resolution photo:
app.box.com/s/jyisidse86v4p9thpcpw
Attachments:
Last edit: 26 Dec 2013 23:39 by Daryoon.

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27 Dec 2013 08:35 - 27 Dec 2013 08:44 #17078 by goebish
Replied by goebish on topic New Hubsan Upgraded Version on the way
Hi Daryoon, that looks easy :)
File Attachment:


Send me a PM if you don't know what to do next, we can have a chat on Skype or IRC.
Last edit: 27 Dec 2013 08:44 by goebish.

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27 Dec 2013 15:01 - 27 Dec 2013 15:05 #17094 by Daryoon
Replied by Daryoon on topic New Hubsan Upgraded Version on the way
Yeah, I would need help.

I solder some pins to those points and hook up the LA this way.

CH1: SCS (enable)
CH2: SCK (clock)
CH3: SDIO (data)
GND: GND

Saleae Logic 1.1.15 software was used.

Here's the log captured:
Download: app.box.com/s/muit9s5wsr1efx696uvv

I am on Viber if you use that, we can chat. (preferred as it's on my desktop and smartphone) Otherwise, we can Skype if it's easier for you.
Last edit: 27 Dec 2013 15:05 by Daryoon.

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27 Dec 2013 15:06 #17095 by goebish
Replied by goebish on topic New Hubsan Upgraded Version on the way
Ok thanks, I'll try to analyze it now :)

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27 Dec 2013 15:29 - 27 Dec 2013 16:04 #17102 by goebish
Replied by goebish on topic New Hubsan Upgraded Version on the way
Good, looks like something is happening on mm and or oo :
    aa bb cc dd ee ff gg hh ii jj kk ll mm nn oo pp
Tx: 20 00 00 00 80 00 80 00 bf 0e 19 00 33 00 29 9e 
Tx: 20 00 00 00 80 00 80 00 bf 0e 19 00 33 00 28 9f 
Tx: 20 00 00 00 80 00 80 00 bf 0e 19 00 33 00 29 9e 
Tx: 20 00 00 00 80 00 80 00 bf 0e 19 00 33 00 29 9e 
Tx: 20 00 00 00 80 00 80 00 bf 0e 19 00 33 00 29 9e 
Tx: 20 00 00 00 80 00 80 00 bf 0e 19 00 33 00 28 9f

can you make a longer capture in which you change the vTX frequency please ?
(and tell me what you have done)
Maybe you can lower capture frequency (the SPI bus is not very fast) and only export channels 0,1 & 2 to have a smaller file, you can zip it too ;)

I can't see any telemetry data (Rx) in the log, but it's only a 1.5 seconds log, maybe it's too short, does it even have telemetry ? I don't know much about this quad actually :p
Last edit: 27 Dec 2013 16:04 by goebish.

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27 Dec 2013 15:37 #17104 by Xermalk
Replied by Xermalk on topic New Hubsan Upgraded Version on the way
Make sure to go through and capture all frequencies, there's like 32 different ones :P

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27 Dec 2013 15:47 - 27 Dec 2013 15:48 #17106 by goebish
Replied by goebish on topic New Hubsan Upgraded Version on the way
32 vTX frequencies ? Does this mean it is compatible with any 5.8GHz receiver, fatshark or immersionrc freqs ?

All my receivers use band E (immersionrc)
Last edit: 27 Dec 2013 15:48 by goebish.

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27 Dec 2013 16:18 - 27 Dec 2013 16:19 #17109 by Xermalk
Replied by Xermalk on topic New Hubsan Upgraded Version on the way
Yep, you can set the fpv frequency in 5mhz steps.

All the frequencies are here.

Last edit: 27 Dec 2013 16:19 by Xermalk.

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27 Dec 2013 16:19 #17110 by goebish
Replied by goebish on topic New Hubsan Upgraded Version on the way
Great, I sure want a bnf version when the protocol is hacked and implemented into Deviation, which shouldn't take more than a couple of hours if we get in sync with Daryoon ;)

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